Adding preferences to an extension - Archive of obsolete content
« previousnext » this article takes the creating a dynamic status bar extension sample to the next level, adding a popup menu that lets you quickly switch between multiple stocks to watch.
... as before, concepts covered in the previous articles in this series won't be rehashed here, so if you haven't already seen them: creating a status bar extension creating a dynamic status bar extension also, for reference, you may want to take a look at preferences system and the preferences api.
... download the sample you can download a copy of this sample to look over, or to use as the basis for your own extension.
...And 16 more matches

Multiple item extension packaging - Archive of obsolete content
from the release of firefox 53, multiple item extension packages are no longer supported and will not load.
...every multiple item package must provide an install.rdf file (not old-style install.js!) and has the same requirements as an extension except as noted below.
... there is currently no feature to prevent or warn the user when installing an older version of an extension.
...And 14 more matches

How to convert an overlay extension to restartless - Archive of obsolete content
this article is a step-by-step tutorial on how to convert an old overlay-based extension into a restartless (bootstrapped) extension that is also extractionless.
...in overlay extensions, you can place a resource mapping in the chrome.manifest for your add-on and load your own jsm from resource:// uris.
... step 2b: audit any remaining resource:// uri usage internal to your extension if you don't need resource:// uris for anything else, then you may be able to skip the next step.
...And 13 more matches

Deploying a Plugin as an Extension - Archive of obsolete content
one of the new features available in firefox 1.5 is the ability to place browser plugins in a firefox extension.
... this feature is particularly useful for vendors who wish to deploy the plugin even if firefox is not currently installed, or who want to use the automatic extension update mechanism to update their plugin to a newer version.
...with firefox 1.5, you can use the built-in extension mechanism to make a plugin available to your users.
...And 12 more matches

Extension Versioning, Update and Compatibility - Archive of obsolete content
simply create the boolean preference extensions.checkcompatibility and set it to false.
... note: before firefox 1.5 the preference app.extensions.version could be used to override the version that the application believed itself to be to allow normally incompatible extensions to install.
...with compatibility updating it is not necessary to release a whole new version of the extension just to increase its maxversion.
...And 12 more matches

PublicKeyCredentialCreationOptions.extensions - Web APIs
extensions, an optional property of the publickeycredentialcreationoptions dictionary, is an object providing the client extensions and their input values.
... extensions are values requesting additional processing by the client and by the authenticator.
... for instance, extensions may be used for: backward compatibility with the legacy fido js api, knowing the user verification process, etc.
...And 12 more matches

Extensions - Archive of obsolete content
prism has support for extensions.
... extensions are built using the same methods as any mozilla-based extension.
... since prism is a totally separate host application, there are some prism-specific issues that you need to handle when creating your extension.
...And 10 more matches

Overlay extensions - Archive of obsolete content
this page contains links to documentation for the approach to developing extensions for gecko-based applications which uses: xul overlays to specify the interface apis available to privileged code, such as tabbrowser and javascript modules, to interact with the application and content.
... prior to firefox 4, and the gecko 2 engine that powers it, this was the only way to develop extensions.
... this methodology has largely been superseded by restartless extensions, and the add-on sdk, which is built on top of them.
...And 9 more matches

Security best practices in extensions - Archive of obsolete content
this document is intended as a guide for developers to promote best practices in securing your extension.
... this is written from the perspective of a firefox extension, but most items apply to extensions for other mozilla-based applications such as thunderbird or seamonkey.
...a more detailed explanation of this process is in displaying web content in an extension without security issues.
...And 9 more matches

Java in Firefox Extensions - Archive of obsolete content
if you are in need of calling java code from within a firefox extension, you can make use of liveconnect.
... liveconnect gives your extension's javascript code (linked from or contained in xul code) access to 2 objects: java and packages (note that per this thread, although the new documentation for the liveconnect reimplementation states that these globals will be deprecated (in the context of applets), "firefox and the java plug-in will continue to support the global java/packages keywords, in particular in the context of firefox extensions.").
...if you wish to call java code from within javascript code that implements some xpcom components, at this time, you need a different technique (refer to the complete java firefox extension).
...And 9 more matches

JS_PreventExtensions
syntax // added in spidermonkey 45 bool js_preventextensions(jscontext *cx, js::handleobject obj, js::objectopresult &result); // obsolete since jsapi 39 bool js_preventextensions(jscontext *cx, js::handleobject obj, bool *succeeded); name type description cx jscontext * the context.
... in javascript this may be accomplished using the object.preventextensions method.
... the similar jsapi method is js_preventextensions.
...And 9 more matches

extIExtension
this content covers features introduced in thunderbird 3 the extiextension interface represents an extension.
... extiextension is defined in toolkit/components/exthelper/extiapplication.idl.
... method overview fixme: attributes attribute type description id readonly attribute astring the id of the extension.
...And 9 more matches

Building a Thunderbird extension 3: install manifest
the install.rdf file is an xml file that provides general information about the extension.
... open the file called install.rdf that you created at the top of your extension's directory hierarchy and paste the following text into the file: <?xml version="1.0"?> <rdf xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#"> <description about="urn:mozilla:install-manifest"> <em:id>myfirstext@jen.zed</em:id> <em:name>my first extension</em:name> <em:version>1.0</em:version> <em:creator>jenzed</em:creator> <em:targetapplication> <description> <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id> <em:minversion>1.5</em:minversion> <em:maxversion>5.0.*</em:maxversion> </description> </em:targetapplication> </description> </rdf> the following items (shown in bold) should be cus...
...tomized for your application: <em:id>myfirstext@jen.zed</em:id>: this is the id of the extension.
...And 9 more matches

requiredExtensions - SVG: Scalable Vector Graphics
the requiredextensions attribute defines a list of required language extensions.
... language extensions are capabilities within a user agent that go beyond the feature set defined in this specification.
... each extension is identified by an url reference.
...And 9 more matches

Performance best practices in extensions - Archive of obsolete content
extensions can do almost anything.
... there is a down side to this: poorly written extensions can have a severe impact on the browsing experience, including on the overall performance of firefox itself.
... this article offers some best practices and suggestions that can not only improve the performance and speed of your extension, but also of firefox itself.
...And 8 more matches

PublicKeyCredential.getClientExtensionResults() - Web APIs
getclientextensionresults() is a method of the publickeycredential interface that returns an arraybuffer which contains a map between the extensions identifiers and their results after having being processed by the client.
... during the creation or fetching of a publickeycredential (respectively via navigator.credentials.create() and navigator.credentials.get()), it is possible to have "custom" processing by the client for different extensions which are respectively given by publickeycredentialcreationoptions.extensions and publickeycredentialrequestoptions.extensions.
... note: extensions are optional and different browsers may recognize different extensions.
...And 8 more matches

PublicKeyCredentialRequestOptions.extensions - Web APIs
extensions, an optional property of the publickeycredentialrequestoptions dictionary, is an object providing the client extensions and their input values.
... extensions are values requesting additional processing by the client and by the authenticator.
... for instance, extensions may be used for: backward compatibility with the legacy fido js api, knowing the user verification process, etc.
...And 8 more matches

Object.preventExtensions() - JavaScript
the object.preventextensions() method prevents new properties from ever being added to an object (i.e.
... prevents future extensions to the object).
... syntax object.preventextensions(obj) parameters obj the object which should be made non-extensible.
...And 8 more matches

Chapter 6: Firefox extensions and XUL applications - Archive of obsolete content
matsuzawa-san is a co-author of firefox 3 hacks (o'reilly japan, 2008.) this chapter discusses tools to assist in developing extensions.
... tools for extension developers fixme: are we sure we'll talking about venkman since it's not well maintained fixme: we maybe should talk about firebug and chromebug fixme: and what about console 2 and docked-js console?
...it works like typical debuggers, and is useful not only for developing extensions, but also for general web development.
...And 7 more matches

Building an Account Manager Extension
step 1: implementing nsiaccountmanagerextension as first step we have to implement the nsiaccountmanagerextension.
... we name the extension "devmo-account" and state that it is located in the chrome package "example@mozilla.org".
... components.utils.import("resource://gre/modules/xpcomutils.jsm"); //class constructor function devmoaccountmanagerextension() {}; // class definition devmoaccountmanagerextension.prototype = { name : "devmo-account", chromepackagename : "example@mozilla.org", showpanel: function(server) { //this panel is only shown for imap accounts...
...And 7 more matches

Reflect.preventExtensions() - JavaScript
the static reflect.preventextensions() method prevents new properties from ever being added to an object (i.e., prevents future extensions to the object).
... it is similar to object.preventextensions(), but with some differences.
... syntax reflect.preventextensions(target) parameters target the target object on which to prevent extensions.
...And 7 more matches

Communication between HTML and your extension - Archive of obsolete content
communication between an html page and and extension after building a sample extension by reading carefully and following the complete instructions for building an extension i was able to get an extension that could display something on the status bar.
... what i wanted to do was have an extension "look" for something on an html page and if it found that something perform some operation on the found thing and then update the status bar with the results of the operation.
... with a lot of help from irc://irc.mozilla.org#js and irc://irc.mozilla.org#extdev i was able to get it running pretty well, but i still would rather have the client less responsible for pinging the extension to "look" for what is on the page.
...And 6 more matches

Downloading JSON and JavaScript in extensions - Archive of obsolete content
a common practice found in many extensions is using xmlhttprequest (or some other mechanism) to download javascript or json (they are different) from a remote website.
... once the content has been downloaded, the extension authors proceed to use eval() to decode the string content into javascript objects.
...so the extension will not be allowed to move out of the amo sandbox.
...And 6 more matches

Using Dependent Libraries In Extension Components - Archive of obsolete content
extensions with binary components sometimes need to depend on other shared libraries (for example, libraries provided by a third party).
... the firefox extension system does not provide automatic support for loading these dependent libraries, but it is possible to load these libraries explicitly using a component stub.
...sample code is below, and can be built by placing the two files in extensions/stub and configuring with --enable-extensions=stub extension file structure using the stub slightly changes how components are packaged in the extension directory structure.
...And 6 more matches

Search Extension Tutorial (Draft) - Archive of obsolete content
changing default search setting from extensions many add-ons, for monetization or other reasons, change several search-related settings at install time.
...the simplest, which works only for traditional, non-restartless add-ons, is to add the preference changes to a file in an extension's defaults/preferences/ directory.
...pref("browser.search.defaultenginename", "data:text/plain,browser.search.defaultenginename=example engine"); in the case or restartless extensions, the preferences need to be changed manually, and reverted when the extension is disabled if they have not been changed in the meantime.
...And 6 more matches

Updating an extension to support multiple Mozilla applications - Archive of obsolete content
« previousnext » this article shows how to take an existing extension and update it so that it can be used in additional mozilla applications.
... we'll build upon the stock watcher extension created in earlier articles in this series, updating it so it can also be used in thunderbird and sunbird (previous versions worked only in firefox).
... if you haven't already created an extension, or would like to refresh your memory, take a look at the previous articles in this series: creating a status bar extension creating a dynamic status bar extension adding preferences to an extension localizing an extension download the sample you can download this article's sample code so you can look at it side-by-side with the article, or to use it as a basis for your own extension.
...And 6 more matches

Installing Extensions and Themes From Web Pages - Archive of obsolete content
there are a variety of ways you can install extensions and themes from web pages, including direct linking to the xpi files and using the installtrigger object.
... extension and web authors are encouraged to use the method described below to install xpis, as it provides the best experience to users.
....getattribute("iconurl"), hash: aevent.target.getattribute("hash"), tostring: function () { return this.url; } } }; installtrigger.install(params); return false; } //--> </script> <a href="http://www.example.com/foo.xpi" iconurl="http://www.example.com/foo.png" hash="sha1:28857e60d043447c5f4550853f2d40770b326a13" onclick="return install(event);">install extension!</a> let's go through this piece by piece.
...And 5 more matches

Creating a dynamic status bar extension - Archive of obsolete content
« previousnext » this article builds upon the article creating a status bar extension, which creates a static status bar panel in the firefox status bar, by dynamically updating its content with information fetched from the web every few minutes.
...download the sample you can download a copy of this sample to look over, or to use as the basis for your own extension.
... or, if you've already got the code from the creating a status bar extension sample, you can follow this tutorial to update that existing code with new features.
...And 5 more matches

Localizing an extension - Archive of obsolete content
« previousnext » this article expands upon the previous samples on extension writing by adding localization support to our stock watcher extension.
... performing a few simple steps makes your extension much easier to localize into various languages without having to edit the xul or javascript files themselves.
... if you haven't already created an extension, or would like to refresh your memory, take a look at the previous articles in this series: creating a status bar extension creating a dynamic status bar extension adding preferences to an extension download the sample you can download this article's sample code so you can look at it side-by-side with the article, or to use it as a basis for your own extension.
...And 5 more matches

Building a Thunderbird extension 1: introduction
similar to firefox, thunderbird functionality can be enhanced and customized via extensions.
... this tutorial will introduce you to the components of a thunderbird extension and will show you how to build your own.
... the tutorial has the following pages: introduction (this page) the extension filesystem (setting up your local system) install manifest (the install.rdf file that contains meta-information about the extension) chrome manifest (list of packages and overlays) xul (the xml user interface language that is used to modify the thunderbird user interface) adding javascript (explains how to add some simple javascript to your thunderbird extension) installing locally (enabling the extension on your local thunderbird instance) packaging (making a distribution package that contains the extension) distributing (from your own site or from http://addons.mozilla.org/) this tutorial is compatible with thunderbird versions 2,3 and 5.
...And 5 more matches

handler.preventExtensions() - JavaScript
the handler.preventextensions() method is a trap for object.preventextensions().
... syntax const p = new proxy(target, { preventextensions: function(target) { } }); parameters the following parameter is passed to the preventextensions() method.
... return value the preventextensions() method must return a boolean value.
...And 5 more matches

Displaying web content in an extension without security issues - Archive of obsolete content
one of the most common security issues with extensions is execution of remote code in privileged context.
... a typical example is an rss reader extension that would take the content of the rss feed (html code), format it nicely and insert into the extension window.
... the issue that is commonly overlooked here is that the rss feed could contain some malicious javascript code and it would then execute with the privileges of the extension — meaning that it would get full access to the browser (cookies, history etc) and to user’s files.
...And 4 more matches

nsIMsgAccountManagerExtension
the nsimsgaccountmanagerextension interface is used to add a new panel to thunderbird's account manager.
... an account manager extension is a xpcom compontent implementing this interface.
...an account manager extension with a "name" attribute of "devmo" and the "chromepackagename" attribute set to "extension@example.org" means, that the account manager expects to find a xul file in "chrome://extension@example.org/content/am-devmo.xul" and a property file in "chrome://extension@example.org/locale/am-devmo.properties" containing a property named "prefpanel-devmo".
...And 4 more matches

WebGLRenderingContext.getExtension() - Web APIs
the webglrenderingcontext.getextension() method enables a webgl extension.
... syntax gl.getextension(name); parameters name a string for the name of the webgl extension to enable.
... return value a webgl extension object, or null if name does not match (case-insensitive) to one of the strings in webglrenderingcontext.getsupportedextensions.
...And 4 more matches

WebGLRenderingContext.getSupportedExtensions() - Web APIs
the webglrenderingcontext.getsupportedextensions() method returns a list of all the supported webgl extensions.
... syntax gl.getsupportedextensions(); return value an array of strings with all the supported webgl extensions.
... examples var canvas = document.getelementbyid('canvas'); gl = canvas.getcontext('webgl'); var extensions = gl.getsupportedextensions(); // array [ 'angle_instanced_arrays', 'ext_blend_minmax', ...
...And 4 more matches

Chapter 2: Technologies used in developing extensions - Archive of obsolete content
before we dive into a thorough explanation, we'll quickly introduce the technologies used to develop firefox extensions.
... technologies used to develop firefox extensions firefox and its extensions are both based on and developed with technologies widely used on the web.
...if you've had experience developing with dynamic html, you'll probably find it relatively easy to pick up the knowledge you'll need to develop firefox extensions.
...And 3 more matches

Signing an extension - Archive of obsolete content
for an extension to work in firefox it must be signed by mozilla, not by yourself.
... this article describes how to digitally sign your extension for firefox and thunderbird, with a code signing certificate for object signing.
... get the signing tool we use nss to sign an extension.
...And 3 more matches

Creating a Mozilla Extension - Archive of obsolete content
this tutorial describes how to create an extension for the old versions of mozilla suite (currently seamonkey).
... see building an extension for an up-to-date tutorial (it focuses on firefox, but is also applicable to other new applications).
... a mozilla extension is an installable enhancement to the mozilla browser that provides additional functionality (for example linky, which adds an item to the context menu for opening multiple links in a document or selection).
...And 3 more matches

Extensions - Archive of obsolete content
for example, to add an item to the end of the tools menu, use the following: <menupopup id="menu_toolspopup"> <menuitem label="thesaurus"/> </menupopup> note that other extensions may be adding their own items into the same menus.
... because of this, the new item might not appear at the end of the menu but before a menuitem added by another extension, depending on the order in which the overlays are applied.
... as you cannot predict this order, you should not rely on any menuitems being in particular positions in the presence of other extensions.
...And 3 more matches

Using workers in extensions - Archive of obsolete content
« previous this article shows you how to use worker threads in extensions to perform tasks in the background without blocking the user interface.
... if you haven't already created an extension, or would like to refresh your memory, take a look at the previous articles in this series: creating a status bar extension creating a dynamic status bar extension adding preferences to an extension localizing an extension updating an extension to support multiple mozilla applications download the sample you may download the complete example: download the example.
... how this differs from previous versions this version of the stock ticker extension moves the xmlhttprequest call that fetches updated stock information into a worker thread, which then passes that information back to the main body of the extension's code to update the display in the status bar.
...And 3 more matches

Localizing extension metadata on addons.mozilla.org
amo supports localized metadata for each extension.
... this data describes the extension, and doesn't necessarily change with each revision (but it can).
... the localizable data fields of an extension are: name homepage summary description eula privacy policy version notes developer comments when you submit a new extension to amo, the process is divided into several steps.
...And 3 more matches

Thunderbird extensions
building a thunderbird extension step-by-step explanation on how to build an extension for thunderbird.
... the following documentation provides help for creating extensions for the thunderbird email client.
... there are similarities with firefox extensions, but there are also differences that may confound the starting thunderbird developer.
...And 3 more matches

Extensions support in SeaMonkey 2 - Archive of obsolete content
starting with seamonkey 2 alpha 1 seamonkey supports toolkit/-style extensions.
... these type of extensions have many advantages for both users and developers compared to the old xpinstall/-style extensions.
... the basics to support seamonkey 2 as a target application, you need to add it to the list of target applications in the extension's install.rdf file.
...And 2 more matches

Extension Frequently Asked Questions - Archive of obsolete content
this is quick set of answers to the most common issues with extension development.
...for thunderbird, you may also find the extension howto or faq pages helpful.
... if you're looking for a place to get started, try our tutorial, building an extension or mozillazine's getting started tutorial.
...And 2 more matches

bootstrap.js - Extensions
the bootstrap.js script should contain several specific functions, which are called by the browser to manage the extension.
... the script gets executed in a privileged sandbox, which is cached until the extension is shut down.
... for more information, see bootstrapped extensions.
...And 2 more matches

Extension Theming Guidelines - Archive of obsolete content
this is a set of guidelines on how to control the look and feel of your extension while leaving it open for styling by custom themes.
... skin packages just as extension code should exist in chrome content packages, all of the styling for an extension including css and images should exist in a chrome skin package.
... branding certain items of your extensions style, in particular logos and icons can be kept in the chrome content package such that they are not replaceable by custom themes stylesheets guidelines include stylesheets for every new window that your extension adds and for every window that your extension overlays content into be sure to add a stylesheet from your chrome skin package.
...if you are not then you run a risk of conflicting with content that other extensions add to the window.

Building a Thunderbird extension 5: XUL
for our first extension, we will add some text to the thunderbird status bar.
...to view this xul file use the dom inspector extension (no longer supported) or look inside the omni.ja archive, which is located in the thunderbird program folder.
...this shows how the thunderbird architecture allows extensions to modify the user experience without modifying the installation files.
... this also enables version independence between thunderbird and thunderbird extensions.

WebSocket.extensions - Web APIs
the websocket.extensions read-only property returns the extensions selected by the server.
... this is currently only the empty string or a list of extensions as negotiated by the connection.
... syntax var extensions = awebsocket.extensions; value a domstring.
... specifications specification status comment html living standardthe definition of 'websocket: extensions' in that specification.

Makefile.mozextension.2 - Archive of obsolete content
this makefile is a modification of the makefile.mozextention, found in makefile for packaging an extension - mozillazine knowledge base (2005).
... note that the original makefile.mozextention merely repeats the steps in getting started with extension development - mozillazine knowledge base (2008).
...then again if you do that, all of the < > will be quoted as & lt ; so again it will be corrupt :( therefore, here is a direct link to this makefile: makefile.mozextension2 ## file: makefile.mozextension2 ## based on http://kb.mozillazine.org/makefile_for_packaging_an_extension ## "this makefile.mozextention is for the test extension" ## the original makefile.mozextention reconstructs http://kb.mozillazine.org/getting_started_with_extension_development # call with: # make -f makefile.mozextension2 make_structure ## (without args for 'all') # note: @echo silent...

Localizing extension descriptions
add the following line to each of your localization properties files (where extension_id matches your extension id (<em:id> from install.rdf) and localized_description is the description of your extension that you want to appear in the given language): extensions.extension_id.description=localized_description if you do not currently have one, create a default preferences file.
... add the following line to it (where extension_id matches your application id from install.rdf and path_to_localization_file is the chrome path to the localization file you added to earlier): pref("extensions.extension_id.description", "path_to_localization_file"); localizable strings the following add-on metadata can be localized using this process: name description creator homepageurl localizable lists in cases where multiple values can exist, a numeric index is appended to the end of the preference name: extensions.extension_id.contributor.1=first_localized_contributor_name extensions.extension_id.contributor.2=second_localized_contributor_name extensions.extension_id.contributor.3=thrid_localized_contributor_name pref("extensions.extension_id.contributor.1", "path_to_localiza...
...tion_file"); pref("extensions.extension_id.contributor.2", "path_to_localization_file"); pref("extensions.extension_id.contributor.3", "path_to_localization_file"); the following add-on metadata can be localized using this process: developer translator contributor ...

Community - Extensions
if you know of useful mailing lists, newsgroups, forums, or other communities related to extension development, please link to them here.
... mozillazine extensions & themes forum #extdev channel on moznet irc network — extension development questions #addons channel on moznet irc network — questions about http://addons.mozilla.org mozdev project owners mailing list mozillazine knowledge base allyourideas — ideas for extensions ((really needs a unique captcha)) babelzilla — a community for developers and translators of extension for mozilla applications ...

WebExtensions - MDN Web Docs Glossary: Definitions of Web-related terms
webextensions is a cross-browser system for developing browser extensions in firefox.
... learn more technical reference browser extensions on mdn ...

ExtensionManager (Toolkit)
the extensionmanager follows the nsiextensionmanager api.
... examples here is how to retrive all the extensions installed: var em = cc['@mozilla.org/extensions/manager;1'] .getservice(ci.nsiextensionmanager); const nsiupdateitem = ci.nsiupdateitem; var extension_type = nsiupdateitem.type_extension; items = em.getitemlist(extension_type, {}); items.foreach(function(item, index, array) { alert(item.name + " / " + item.id + " version: " + item.version); }); ...

Extension Storage - Firefox Developer Tools
this storage type is only shown when debugging extensions.
... when selecting an extension id in the storage tree of the storage inspector, a table lists the details of all the extension storage present for the extension.

Encrypted Media Extensions API - Web APIs
the encrypted media extensions api provides interfaces for controlling the playback of content which is subject to a digital restrictions management scheme.
... specifications specification status comment encrypted media extensions recommendation initial definition ...

Microsoft API extensions - Web APIs
microsoft browsers (internet explorer, and in a few cases, microsoft edge) support a number of special microsoft extensions to the otherwise standard dom apis.
... these extensions are prefixed with ms or ms.

Microsoft CSS extensions - CSS: Cascading Style Sheets
microsoft applications such as edge and internet explorer support a number of special microsoft extensions to css.
... these extensions are prefixed with -ms-.

Mozilla CSS extensions - CSS: Cascading Style Sheets
mozilla applications such as firefox support a number of special mozilla extensions to css, including properties, values, pseudo-elements and pseudo-classes, at-rules, and media queries.
... these extensions are prefixed with -moz-.

WebKit CSS extensions - CSS: Cascading Style Sheets
applications based on webkit or blink, such as safari and chrome, support a number of special webkit extensions to css.
... these extensions are generally prefixed with -webkit-.

Listening to events in Firefox extensions - Archive of obsolete content
types of events there are multiple types of events that application and extension authors can use to receive notifications from <xul:browser> and <xul:tabbrowser> elements to hear about changes relating to loads of the content contained within them.

Introducing the Audio API extension - Archive of obsolete content
the audio data api extension extends the html5 specification of the <audio> and <video> media elements by exposing audio metadata and raw audio data.

ant script to assemble an extension - Archive of obsolete content
this ant script helps to package an extension <?xml version="1.0"?> this build file was written by régis décamps <decamps@users.sf.net> <project name="blogmark" default="createxpi"> <property name="version" value="1.3-rc1"/> <property name="description" value="new context-menu item to add the current page in your blogmarks"/> xpi file is created after "chrome/blogmark.jar" is created, which is then stuffed into "blogmark.xpi" <target name="createxpi" depends="createjar" description="assemble the final build blogmark.xpi"> <zip destfile="blogmark-${version}.xpi"> <zipfileset dir="." includes="chrome/blogmark.jar" /> <zipfileset...

XEmbed Extension for Mozilla Plugins - Archive of obsolete content
overview recent versions of mozilla include an extension for writing plugins that use xembed instead of using the old xt-based mainloop that most plugins have been using since the netscape 3.x days.

Microsoft JavaScript extensions - Archive of obsolete content
microsoft browsers (internet explorer, and in a few cases, microsoft edge) support a number of special microsoft extensions to the otherwise standard javascript apis.

Transcoding assets for Media Source Extensions - Web APIs
when working with media source extensions, it is likely that you need to condition your assets before you can stream them.

Index - Archive of obsolete content
9 add-ons add-ons, archive, extensions archived add-ons documentation.
... 17 cross-domain content scripts add-on sdk, add-ons, extensions no summary!
... 18 interacting with page scripts add-on sdk, add-ons, extensions by default, content scripts loaded by add-ons and scripts loaded by web pages are insulated from each other: 19 loading content scripts no summary!
...And 269 more matches

Index - Web APIs
2 angle_instanced_arrays api, reference, webgl, webgl extension the angle_instanced_arrays extension is part of the webgl api and allows to draw the same object, or groups of similar objects multiple times, if they share the same vertex data, primitive count and type.
... 3 angle_instanced_arrays.drawarraysinstancedangle() angle_instanced_arrays, api, method, reference, webgl, webgl extension the angle_instanced_arrays.drawarraysinstancedangle() method of the webgl api renders primitives from array data like the gl.drawarrays() method.
... 4 angle_instanced_arrays.drawelementsinstancedangle() angle_instanced_arrays, api, method, reference, webgl, webgl extension the angle_instanced_arrays.drawelementsinstancedangle() method of the webgl api renders primitives from array data like the gl.drawelements() method.
...And 194 more matches

Index
found 1275 pages: # page tags and summary 1 xpcom add-ons, extensions, landing, mozilla, xpcom xpcom is a cross platform component object model, similar to microsoft com.
... 2 accessing the windows registry using xpcom add-ons, code snippets, extensions, needsclassification, windows registry when implementing windows-specific functionality, it is often useful to access the windows registry for information about the environment or other installed programs.
... 5 bundling multiple binary components binary xpcom components are sometimes required to implement low-level features for extensions.
...And 62 more matches

Index
the trust assigned by the third party might be restricted to certain uses, which are listed in certificate extensions that are contained in the certificate.
...for example: certificates were valid at the time the signature was made, name in certificates matches the expected signer (check subject name, common name, email, based on application), the trust restrictions recorded inside the certificate (extensions) permit the use (e.g., encryption might be allowed, but not signing), and based on environment/application policy it might be required to perform a revocation check (ocsp or crl), that asks the issuer(s) of the certificates whether there have been events that made it necessary to revoke the trust (revoke the validity of the cert).
...for example: 20050204153000z * add an extension to a crl or a crl certificate entry: addext extension-name critical/non-critical [arg1[arg2 ...]] where: extension-name: string value of a name of known extensions.
...And 51 more matches

Install Manifests - Archive of obsolete content
id the id of the extension, which must be one of the following: guid (firefox 1.0) a string formatted like so: extensionname@example.org the latter format is significantly easier to generate and manipulate.
... note: the id property is optional in a webextension.
... examples <em:id>extensionname@example.org</em:id> <em:id>{daf44bf7-a45e-4450-979c-91cf07434c3d}</em:id> name the name of the add-on; intended for display in the ui.
...And 43 more matches

Extentsions FAQ - Archive of obsolete content
return to mozilla-dev-extensions faq friday, september 22 - 29, 2006 (↑ top) how to write an xpcom component in c++ that can communicate to a com component?
...just drag them there from the toolbar customisation window, like you would when adding buttons to the toolbars." option #4 install toolbar control <http://webdesigns.ms11.net/chromeditp.html> asking for help with getting an extension to process windows messages.
... use wm_copydata how to creating an extension that can replace html code on a specific page that does not use greasemonkey?
...And 38 more matches

Complete - Archive of obsolete content
this page is for readers who have followed the custom toolbar button tutorial for firefox, thunderbird and sunbird, or the custom toolbar button:seamonkey tutorial for seamonkey, and who want to learn more about developing extensions.
... introduction you can use the custom toolbar button tutorial as a very simple introduction to extensions.
... however, because it is so simple it does not support some of the usual features of extensions.
...And 37 more matches

NSS tools : certutil
--dump-ext-val oid for single cert, print binary der encoding of extension oid.
... add one or multiple extensions that certutil cannot encode yet, by loading their encodings from external files.
... · oid (example): 1.2.3.4 · critical-flag: critical or not-critical · filename: full path to a file containing an encoded extension -f password-file specify a file that will automatically supply the password to include in a certificate or to access a certificate database.
...And 35 more matches

certutil
-1 | --keyusage keyword,keyword set a netscape certificate type extension in the certificate.
... there are several available keywords: o digital signature o nonrepudiation o keyencipherment o dataencipherment o keyagreement o certsigning o crlsigning o critical -2 add a basic constraint extension to a certificate that is being created or added to a database.
... this extension supports the certificate chain verification process.
...And 32 more matches

Setting Up a Development Environment - Archive of obsolete content
on the other hand, extensions use the same (or similar) languages that are used for web development, so most text editors and ides are up to the task.
...it's based on the mozilla xulrunner platform, so it has support for some of the particularities in firefox extension development.
... komodo edit has automatic completion for xul tags and attributes, and it supports mozilla's css extensions (css values and properties beginning with "-moz").
...And 30 more matches

Index
3 account examples extensions, thunderbird this article provides examples on accessing and manipulating thunderbird accounts.
... 4 account interfaces code snippets, extension development, thunderbird this page contains a list of the interfaces that you'll will most likely use when writing extensions that work with email or other accounts.
... 7 address book interfaces mailnews, mozilla, seamonkey, thunderbird this page contains a list of the interfaces that you'll will most likely hit when writing patches for the address book or writing extensions.
...And 28 more matches

Custom toolbar button - Archive of obsolete content
instead, you make your custom button as a self-contained extension in your profile.
... you can also use this page to learn about extensions, and as a starting point if you plan to write a more complex extension.
... note that this extension is very simplified.
...And 22 more matches

A Web PKI x509 certificate primer
in general, x509 certificates bind a signature to a validity period, a public key, a subject, an issuer, and a set of extensions.
... the extensions define extra properties of the certificate such as extra attributes of the certificate or constraints on the use of the certificate.
... extensions while rfc 5280 defines 16 extensions for webpki in this document we will be describing the six extensions we considered critical for understanding.
...And 21 more matches

about:debugging - Firefox Developer Tools
this firefox provides information about temporary extensions you have loaded for debugging, extensions that are installed in firefox, the tabs that you currently have open, and service workers running on firefox.
...when you do, it is added to the network locations list along with the devices, as shown below: this firefox the this firefox tab combines the features of extensions, tabs, and workers into a single tab with the following sections: temporary extensions displays a list of the extensions that you have loaded using the load temporary add-on button.
... extensions this section lists information about the extensions that you have installed on your system.
...And 21 more matches

CSS - Archive of obsolete content
for example, moving a child of the stack far to the right will widen the stack so the child remains visible.-moz-text-blinkthe -moz-text-blink non-standard mozilla css extension specifies the blink mode.-moz-window-shadowthe -moz-window-shadow css property specifies whether a window will have a shadow.
... it only works on mac os x.-ms-acceleratorthe -ms-accelerator css property is a microsoft extension that sets or retrieves a string indicating whether the object represents a keyboard shortcut.-ms-block-progressionthe -ms-block-progression css property is a microsoft extension that specifies the block progression and layout orientation.-ms-content-zoom-chainingthe -ms-content-zoom-chaining css property is a microsoft extension specifying the zoom behavior that occurs when a user hits the zoom limit during page manipulation.-ms-content-zoom-limitthe -ms-content-zoom-limit css shorthand property is a microsoft extension that specifies values for the -ms-content-zoom-limit-min and -ms-content-zoom-limit-max properties.-ms-content-zoom-limit-maxthe -ms-content-zoom-limit-max css property is a microsoft...
... extension that specifies the selected elements' maximum zoom factor.-ms-content-zoom-limit-minthe -ms-content-zoom-limit-min css property is a microsoft extension that specifies the minimum zoom factor.-ms-content-zoom-snapthe -ms-content-zoom-snap css shorthand property is a microsoft extension that specifies values for the -ms-content-zoom-snap-type and -ms-content-zoom-snap-points properties.-ms-content-zoom-snap-pointsthe -ms-content-zoom-snap-points css property is a microsoft extension that specifies where zoom snap-points are located.-ms-content-zoom-snap-typethe -ms-content-zoom-snap-type css property is a microsoft extension that specifies how zooming is affected by defined snap-points.-ms-content-zoomingthe -ms-content-zooming css property is a microsoft extension that specifies whether ...
...And 20 more matches

Interaction between privileged and non-privileged pages - Archive of obsolete content
sending data from unprivileged document to chrome an easy way to send data from a web page to an extension is by using custom dom events.
... in your extension's browser.xul overlay, write code which listens for a custom dom event.
... here we call the event myextensionevent.
...And 19 more matches

Add-ons - Archive of obsolete content
bootstrapped extensions browser.bookmarks.export( function() {...} // optional function ) code snippets … creating custom firefox extensions with the mozilla build system there is a wealth of material on creating extensions for firefox.
... all of these documents currently assume, however, that you are developing your extension using xul and javascript only.
... for complex extensions, it may be necessary to create components in c++ that provide additional functionality.
...And 19 more matches

NSS Tools certutil
-1 add a key usage extension to a certificate that is being created or added to a database.
... this extension allows a certificate's key to be dedicated to supporting specific operations such as ssl server or object signing.
...these usages are described under standard x.509 v3 certificate extensions in appendix a.3 of thered hat certificate system administration guide.
...And 19 more matches

SeaMonkey - making custom toolbar (SM ver. 1.x) - Archive of obsolete content
instead, you make your custom button as a self-contained extension.
...you can also use this page to learn about extensions, and as a starting point if you plan to write a more complex extension.
... note that this extension is very simplified.
...And 18 more matches

XUL Structure - Archive of obsolete content
since xul and html are handled in the same way, you can load both from either your local file system, from a web page, or from an extension or standalone xulrunner application.
... this chrome package registration is the way firefox extensions are able to add features to the browser.
... the extensions are small packages of xul files, javascript, style sheets and images packed together into a single file.
...And 18 more matches

Preferences - Archive of obsolete content
this article provides examples for extension developers that wish to use the mozilla preferences system.
... here are two examples: // get the root branch var prefs = components.classes["@mozilla.org/preferences-service;1"] .getservice(components.interfaces.nsiprefbranch); // get the "extensions.myext." branch var prefs = components.classes["@mozilla.org/preferences-service;1"] .getservice(components.interfaces.nsiprefservice); prefs = prefs.getbranch("extensions.myext."); simple types there are three types of preferences: string, integer, and boolean.
...let's say you want to make the default value for the extensions.myext.welcomemessage preference localizable.
...And 17 more matches

Index of archived content - Archive of obsolete content
unload localization logging modifying web pages based on url modifying the page hosted by a tab open a web page troubleshooting unit testing using xpcom without chrome using third-party modules (jpm) bootstrapped extensions code snippets alerts and notifications autocomplete bookmarks boxes canvas code snippets cookies customizing the download progress bar delayed execution dialogs and prompts downloading files drag & drop embedding svg ...
... toolbar tree uri parsing view source for xul applications windows xml-related code snippets xml:base support in old browsers xpath getattributens common pitfalls communication between html and your extension creating custom firefox extensions with the mozilla build system custom about: urls default preferences deploying a plugin as an extension developing add-ons displaying web content in an extension without security issues downloading json and javascript in extensions enhanced extension installation extension ...
...etiquette extension library extension packaging extension samples extension theming guidelines extension versioning, update and compatibility extensions support in seamonkey 2 firefox addons developer guide hiding browser chrome hotfix extension how to convert an overlay extension to restartless inline options install manifests installing extensions and themes from web pages interaction between privileged and non-privileged pages jetpack processes legacy add-ons legacy extensions for firefox for android api accounts.jsm brows...
...And 17 more matches

Index - Archive of obsolete content
3 a xul bestiary add-ons, extensions, needstechnicalreview, xul this xulnote presents some of the key concepts and terms in the xul development environment.
... 422 deprecated and defunct markup reference, xul {many elements on this page are wrongly marked as deprecated, this page needs review} 423 dynamically modifying xul-based user interface add-ons, dom, extensions, xul this article discusses manipulating xul interfaces, using dom and other apis.
... 440 menus add-ons, extensions, needscontent, reference, référence(2), xul an extension will often wish to attach a new command to a menu.
...And 17 more matches

Chrome registration
mozilla locates and reads the root chrome.manifest file for extensions and themes.
...this is accomplished through xpinstall and the extension manager.
... in order to inform the chrome registry of the available chrome, a text manifest is used: this manifest is "chrome.manifest" in the root of an extension, or theme, or xulrunner application.
...And 15 more matches

nss tech note3
all about certificate extensions nss technical note: 3 09 may 2002 nelson b.
... bolyard this week at least 5 different people came to me with variants of the same question: what certificate extensions do i have to put into my cert for nss to allow it to be used for purpose <x>??
... cert extensions: one vital certificate extension is the "basic constraints" extension.
...And 15 more matches

Repackaging Firefox - Archive of obsolete content
a "distro" extension that makes the changes you desire.
... put together your extension that customizes firefox.
... the distro extension all the changes you will want to make (for example, changing the default homepage or adding default bookmarks) can be encapsulated into a firefox extension.
...And 14 more matches

Manifest Files - Archive of obsolete content
it doesn't actually matter what the file is called as long as it has the .manifest extension.
...extensions will make the most use of overlays, since they merge their ui with the browser ui.
...however, when distributing an application or extension, you will want to package them into an archive to avoid having to install lots of smaller files.
...And 14 more matches

Archived Mozilla and build documentation - Archive of obsolete content
ant script to assemble an extension this ant script helps to package an extension archived spidermonkey docs this section contains old spidermonkey documentation.
... chromeless [this project may not be active — check github https://github.com/mozilla/chromeless] creating a firefox sidebar extension this article describes how to create a registered sidebar for firefox 2 or greater.
... see the references section for information on creating extension in earlier browsers.
...And 14 more matches

Handling Preferences - Archive of obsolete content
adding preferences to an extension extensions can read and write firefox preferences and, most importantly, create and manage their own.
... to add preferences to your extension you should first create a js preferences file that describes the preferences and their default values, although setting defaults is not required.
... note: we recommend that you include all of your extension preferences in the js defaults file.
...And 13 more matches

XULRunner tips - Archive of obsolete content
extension manager to be able to install any extensions, you first need to enable the extension manager in application.ini.
... xulrunner 1.8.0 does not load extensions from the application directory; only the xulrunner directory and the user profile directory are checked.
...the following prefs must also be set to make the xpinstall dialog, extension manager, and theme manager work: pref("xpinstall.dialog.confirm", "chrome://mozapps/content/xpinstall/xpinstallconfirm.xul"); pref("xpinstall.dialog.progress.skin", "chrome://mozapps/content/extensions/extensions.xul?type=themes"); pref("xpinstall.dialog.progress.chrome", "chrome://mozapps/content/extensions/extensions.xul?type=extensions"); pref("xpinstall.dialog.progress.type.skin", "extension:manager-themes"); pref("xpinstall.dialog.progress.type.chrome", "extension:manager-extensions"); pref("extensions.update.enabled", true); pref("extensions.update.interval", 86400); pref("extensi...
...And 13 more matches

Building a Theme - Archive of obsolete content
setting up the development environment themes and extensions are packaged and distributed in zip files or bundles, with the xpi (pronounced “zippy”) file extension.
... browser to chrome/browser/ communicator to chrome/communicator/ you should end up with this directory structure: <ext path>/ /install.rdf /chrome.manifest /chrome/ browser/ communicator/ global/ mozapps/ after this, it would be a good idea to read the article setting up extension development environment and follow the directions there.
... create the install manifest open the file called install.rdf that you created at the top of your extension's folder hierarchy and put this inside: <?xml version="1.0"?> <rdf xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#"> <description about="urn:mozilla:install-manifest"> <em:id>sample@example.net</em:id> <em:version>1.0</em:version> <em:type>4</em:type> <!-- target application this theme can install into, with minimum and maximum supported versions.
...And 13 more matches

Index
found 689 pages: # page tags and summary 1 add-ons add-ons, extension, extensions, landing, mozilla add-ons allow developers to extend and modify the functionality of firefox.
... 675 creating an appealing add-on listing add-ons, beginner, guide, webextension, publishing there are two essential steps to getting people to use your add-on: they need to discover your add-on and open the listing page, then the listing page needs to encourage them to click the add to firefox button.
... 676 index add-ons, glossary, guide, index found 689 pages: 677 signing and distributing your add-on add-ons, extensions, webextensions, distribution, publication, reviews, signing add-ons need to be signed before they can be installed into release and beta versions of firefox.
...And 12 more matches

MCD, Mission Control Desktop, AKA AutoConfig - Archive of obsolete content
ndldap.patch diff -ur thunderbird-3.0/configure thunderbird-3.0.autoldap/configure --- thunderbird-3.0/configure 2009-06-29 11:37:21.677372297 +0200 +++ thunderbird-3.0.autoldap/configure 2009-06-29 14:41:11.547435040 +0200 @@ -12855,7 +12855,7 @@ moz_feeds=1 moz_jsdebugger=1 moz_jsloader=1 -moz_ldap_xpcom= +moz_ldap_xpcom=1 moz_mail_news= moz_mork=1 moz_morkreader= and set --enable-extensions=pref in mozconfig file, in fedora source rpm it is: [root@b008-02 sources]# grep enable-extensions /root/rpmbuild/sources/thunderbird-mozconfig ac_add_options --enable-extensions=pref it seems worse this time , as even after applying those compilation options mentioned above, i now get the following error message while stating thunderbird with autoconfig (autoconf.js having pref('general.conf...
...moz_ldap_xpcom=1 and moz_extensions_default="wallet spellcheck xmlextras pref webservices universalcharset auth" are now present in the default configure script.
...so we needed to recompile thunderbird with autoconfig support, it's just a matter of adding --enable-extensions=pref in mozconfig file.
...And 11 more matches

How Mozilla determines MIME Types
when encountering a non-text byte, the helper app dialog will be shown, showing the mime type corresponding to the extension of the file.
... also, for images loaded via <img src>, mozilla's image library will do content sniffing (never extension sniffing) to find out the real type of the image.
... externalhelperappservice (located at uriloader/exthandler/nsexternalhelperappservice.cpp) the file->mime type mapping works like this: on beos, the operating system is asked for the type of the file (not quite yet, bug 217723) on macos, the type and creator code will be used to lookup the type of the file from the os a hardcoded list of extensions is checked (containing currently 13 entries, nsexternalhelperappservice.cpp line 463 (this is done for speed – it is faster to find data in the hardcoded list than asking the os or looking in preferences) if the extension is not listed there, it becomes interesting.
...And 11 more matches

NSS tools : crlutil
for example: 20050204153000z * add an extension to a crl or a crl certificate entry: addext extension-name critical/non-critical [arg1[arg2 ...]] where: extension-name: string value of a name of known extensions.
... critical/non-critical: is 1 when extension is critical and 0 otherwise.
... arg1, arg2: specific to extension type extension parameters addext uses the range that was set earlier by addcert and will install an extension to every cert entries within the range.
...And 11 more matches

NSS Tools crlutil
for example: 20050204153000z add an extension to a crl or a crl certificate entry: addext extension-name critical/non-critical [arg1[arg2 ...]] where: extension-name: string value of a name of known extensions.
... critical/non-critical: is 1 when extension is critical and 0 otherwise.
... arg1, arg2: specific to extension type extension parameters addext uses the range that was set earlier by addcert and will install an extension to every cert entries within the range.
...And 11 more matches

NSS tools : crlutil
for example: 20050204153000z * add an extension to a crl or a crl certificate entry: addext extension-name critical/non-critical [arg1[arg2 ...]] where: extension-name: string value of a name of known extensions.
... critical/non-critical: is 1 when extension is critical and 0 otherwise.
... arg1, arg2: specific to extension type extension parameters addext uses the range that was set earlier by addcert and will install an extension to every cert entries within the range.
...And 11 more matches

XPCOM changes in Gecko 2.0
for extensions, this is the same chrome.manifest currently used to register chrome.
...also note that extensions using binary components must now use the unpack property in the install manifest.
... platform-specific directories the component/chrome system used to look in platform-specific subdirectories of an extension, such as platform/winnt_x86-msvc/chrome.manifest on windows.
...And 11 more matches

nsIFilePicker
defaultextension astring the extension for the type of files you want to work with.
... defaultstring astring the filename, including extension, that should be suggested to the user as a default.
... constant value description filterall 0x001 corresponds to the *.* filter for file extensions.
...And 11 more matches

Introduction - Archive of obsolete content
this tutorial is meant to be the stepping stone that will turn you into a professional firefox extension developer in no time.
... we have poured years of xul experience into it, providing many solutions for problems extension developers commonly run into.
... xul school was created by appcoast (formerly glaxstar), one of the few companies dedicated to building high-quality firefox extensions.
...And 10 more matches

Supporting private browsing mode - Archive of obsolete content
extensions that may record potentially private information may wish to hook into the private browsing service so that they can avoid saving personal information when private browsing mode is enabled.
... note: private browsing mode may only be detected by chrome code, such as extensions; web content cannot detect whether or not private browsing is in effect.
...docroot = document.documentelement; if (docroot.hasattribute("privatebrowsingmode")) { // private browsing mode is enabled } if (docroot.getattribute("privatebrowsingmode") == "temporary") { // private browsing mode is temporary } if (docroot.getattribute("privatebrowsingmode") == "permanent") { // private browsing mode is permanent for this session } turning private browsing on and off extensions can turn private browsing mode on and off by manipulating the value of the privatebrowsingenabled attribute.
...And 10 more matches

Building Mozilla XForms - Archive of obsolete content
getting started things to know first: the xforms extension has a dependency on the schema-validation extension, so you need to build both (that's done automatically) mozilla switched from cvs to mercurial starting with firefox 3.5.
... during cvs times, the mozilla repository contained both extensions.
... since the switch to mercurial, the extensions live in separate repositories.
...And 10 more matches

Writing WebSocket servers - Web APIs
the client will send a pretty standard http request with headers that looks like this (the http version must be 1.1 or greater, and the method must be get): get /chat http/1.1 host: example.com:8000 upgrade: websocket connection: upgrade sec-websocket-key: dghlihnhbxbszsbub25jzq== sec-websocket-version: 13 the client can solicit extensions and/or subprotocols here; see miscellaneous for details.
...that header looks something like the following (remember each header line ends with \r\n and put an extra \r\n after the last one to indicate the end of the header): http/1.1 101 switching protocols upgrade: websocket connection: upgrade sec-websocket-accept: s3pplmbitxaq9kygzzhzrbk+xoo= additionally, the server can decide on extension/subprotocol requests here; see miscellaneous for details.
...rsv1-3 can be ignored, they are for extensions.
...And 10 more matches

Local Storage - Archive of obsolete content
it is very common for an extension to require some kind of local persistent storage.
...otherwise you may run into problems if the same extension is installed in multiple profiles.
...in general this is the only directory flag you'll need, but sometimes you'll need access to other system directories, and you don't want to have to worry about which operating system or system language your extension is running on.
...And 9 more matches

Creating toolbar buttons (Customize Toolbar Window) - Archive of obsolete content
its intended audience is extension developers with a basic knowledge of xul and css.
... we assume that you're also familiar with the basics of creating firefox extensions and have the hello world extension working.
... adding the toolbar button toolkit applications have customizable toolbars; therefore, it's common practice for extensions to add their toolbar buttons to the toolbar palette, rather than adding them directly to the toolbar.
...And 9 more matches

Localization and Plurals
if you're here to make your code (e.g., extensions) localizable for plural forms, you can jump straight to developing with pluralform.
... pluralrule=10 seconds=sekunda;sekundźe;sekundy;sekundow minutes=mjeńšina;mjeńšinje;mjeńšiny;mjeńšin hours=hodźina;hodźinje;hodźiny;hodźin days=dźeń;dnjej;dny;dnjow testing extension to help make sure you pick the right plural rule and provide enough plural forms for strings, you should use the pluralform checker extension.
... after installing the extension, it should be available from the tools menu.
...And 9 more matches

NSS_3.12_release_notes.html
introduction distribution information new in nss 3.12 bugs fixed documentation compatibility feedback introduction network security services (nss) 3.12 is a minor release with the following new features: sqlite-based shareable certificate and key databases libpkix: an rfc 3280 compliant certificate path validation library camellia cipher support tls session ticket extension (rfc 5077) nss 3.12 is tri-licensed under the mpl 1.1/gpl 2.0/lgpl 2.1.
...nss 3.12 libraries have the following versions: sqlite3: 3.3.17 nssckbi: 1.70 softokn3 and freebl3: 3.12.0.3 other nss libraries: 3.12.0.3 new in nss 3.12 3 new shared library are shipped with nss 3.12: nssutil sqlite nssdbm 1 new include file is shipped with nss3.12: utilrename.h new functions in the nss shared library: cert_checknamespace (see cert.h) cert_encodecertpoliciesextension (see cert.h) cert_encodeinfoaccessextension (see cert.h) cert_encodeinhibitanyextension (see cert.h) cert_encodenoticereference (see cert.h) cert_encodepolicyconstraintsextension (see cert.h) cert_encodepolicymappingextension (see cert.h) cert_encodesubjectkeyid (see certdb/cert.h) cert_encodeusernotice (see cert.h) cert_findcrlentryreasonexten (see cert.h) cert_findcrlnumberexten (see cert.h) ce...
... tls session ticket extension (off by default) see ssl_enable_session_tickets in ssl.h new ssl error codes (see sslerr.h) ssl_error_unsupported_extension_alert ssl_error_certificate_unobtainable_alert ssl_error_unrecognized_name_alert ssl_error_bad_cert_status_response_alert ssl_error_bad_cert_hash_value_alert ssl_error_rx_unexpected_new_session_ticket ssl_error_rx_malformed_new_session_ticket new tls cipher suites (see...
...And 9 more matches

nss tech note4
pulling certificate extension information out of ssl certificates nss technical note: 4 note: this document contains code snippets that focus on essential aspects of the task and often do not illustrate all the cleanup that needs to be done.
... background on cert extensions an extension has the following attributes object id (oid) : a unique oid represents an algorithm, a mechanism, a piece of information, etc.
... critical : indicates whether the extension is critical value : the value of the extension looping through all extensions certcertextension** extensions =cert->extensions; if (extensions) { while (*extensions) { secitem *ext_oid = &(*extensions)->id; secitem *ext_critical = &(*extensions)->critical; secitem *ext_value = ...
...And 9 more matches

Working with windows in chrome code
this article describes working with multiple windows in mozilla chrome code (xul applications and extensions).
... opening windows from a <script> in a window or an overlay to open a new window, we usually use a window.open or window.opendialog dom call, like this: var win = window.open("chrome://myextension/content/about.xul", "aboutmyextension", "chrome,centerscreen"); the first parameter to window.open is the uri of the xul file that describes the window and its contents.
... var ww = components.classes["@mozilla.org/embedcomp/window-watcher;1"] .getservice(components.interfaces.nsiwindowwatcher); var win = ww.openwindow(null, "chrome://myextension/content/about.xul", "aboutmyextension", "chrome,centerscreen", null); window object note the win variable in the above section, which is assigned the return value of window.open.
...And 9 more matches

Useful Mozilla Community Sites - Archive of obsolete content
this is the best way to get your extension to users from all around the world.
... adding your extension to amo is easy.
... all you need is your xpi, a few screenshots (good ones will make your extension much more appealing), and a few minutes to fill a couple of forms.
...And 8 more matches

Structure of an installable bundle - Archive of obsolete content
xulrunner applications, extensions, and themes all share a common directory structure, and in some cases the same bundle can be used as a standalone xulrunner application as well as an installable application extension.
... basic structure of a bundle a bundle may include any of the following files: path from the root of the bundle description version information /install.rdf extension/theme install manifest /application.ini application launch manifest /bootstrap.js the bootstrap script for extensions not requiring a restart (those with <em:bootstrap>true</em:bootstrap> in their install.rdf).
...chrome.manifest, components, defaults) in bootstrapped extensions are not processed by a supporting application.
...And 8 more matches

Theme changes in Firefox 2 - Archive of obsolete content
mozapps/extensions/about.css updated with a simplified set of style names, since several styles were identical.
... mozapps/extensions/extensions.css css for the add-ons manager window.
... mozapps/extensions/itemdisabledfader.png new file; a translucent png used as an overlay on top of items that are disabled in the add-ons manager.
...And 8 more matches

Observer Notifications
[nsobserverservice.cpp] topic description xpcom-startup note: an extension can no longer be registered to receive this notification in firefox 4 and later.
... app-startup note: an extension can no longer be registered to receive this notification in firefox 4 and later.
...this lets extensions inject api into chrome windows as needed (see nsidomglobalpropertyinitializer for an alternative method of doing this, which uses significantly less memory).
...And 8 more matches

Mozilla
there are two ways to create a sidebar for firefox users: the social api and an extension.
...extensions can replace the built-in password storage with their own implementation.
...the python harness communicates with the browser by inserting an extension in the testing profile or uses marionette's wire protocol to drive the browser.
...And 8 more matches

Image file type and format guide - Web media technologies
abbreviation file format mime type file extension(s) browser compatibility apng animated portable network graphics image/apng .apng chrome, edge, firefox, opera, safari bmp bitmap file image/bmp .bmp chrome, edge, firefox, internet explorer, opera, safari gif graphics interchange format image/gif .gif chrome, edge, firefox, internet explorer, opera, safari ico micr...
... mime type image/apng file extension(s) .apng specification wiki.mozilla.org/apng_specification browser compatibility chrome 59, edge 12, firefox 3, opera 46, safari 8 maximum dimensions 2,147,483,647×2,147,483,647 pixels supported color modes color mode bits per component (d) description greyscale 1, 2...
... mime type image/bmp file extension(s) .bmp specification no specification; however, microsoft provides general documentation of the format at docs.microsoft.com/en-us/windows/desktop/gdi/bitmap-storage browser compatibility all versions of chrome, edge, firefox, internet explorer, opera, and safari maximum dimensions either 32,767×32,767 or 2,147,483,647×2,147,483,647 pixels, depending on t...
...And 8 more matches

Inline options - Archive of obsolete content
firefox 7 supports a new syntax for defining extensions' preferences for both bootstrapped and traditional extensions.
... the user interface for the preferences defined with this new syntax appears in the extension's detail view in the add-on manager.
...here is an example of an options.xul file: <?xml version="1.0"?> <!doctype mydialog system "chrome://myaddon/locale/mydialog.dtd"> <vbox xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <setting type="bool" pref="extensions.myaddon.bool" title="boolean" desc="stored as a boolean preference" /> </vbox> note that it's limited to <setting> tags.
...And 7 more matches

Tabbed browser - Archive of obsolete content
getting access to the browser from main window code running in firefox's global chromewindow, common for extensions that overlay into browser.xul, can access the tabbrowser element using the global variable gbrowser.
... from a sidebar basically, if your extension code is a sidebar you can use: var mainwindow = window.queryinterface(components.interfaces.nsiinterfacerequestor) .getinterface(components.interfaces.nsiwebnavigation) .queryinterface(components.interfaces.nsidocshelltreeitem) .roottreeitem .queryinterface(components.interfaces.nsiinterfacerequestor) ...
... xul: <menuitem oncommand="myextension.foo(event)" onclick="checkformiddleclick(this, event)" label="click me"/> js: var myextension = { foo: function(event) { openuilink("http://www.example.com", event, false, true); } } opening a url in an on demand tab cu.import("resource://gre/modules/xpcomutils.jsm"); xpcomutils.definelazyservicegetter(this, "gsessionstore", "@mozilla.org/browser/s...
...And 7 more matches

Examples - Archive of obsolete content
important notes if you plan to test these examples by yourself, you must use the right filename extension (it is written at the beginning of the code).
... examples for "problems with inline style and script" problem 1 <!-- this file should have a .xhtml extension and will generate an error when parsed.
... </p> </body> </html> back to the article problem 2 <!-- this file should have a .xhtml extension --> <!doctype html public "-//w3c//dtd xhtml 1.0 strict//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en-us" xml:lang="en-us"> <head> <title>problem 2 - comments in xhtml</title> <meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8" /> <style type="text/css"> <!-- body {background-color: blue; ...
...And 7 more matches

Archive of obsolete content
adding preferences to an extension this article takes the creating a dynamic status bar extension sample to the next level, adding a popup menu that lets you quickly switch between multiple stocks to watch.
... case sensitivity in class and id names creating a dynamic status bar extension concepts covered in the previous sample won't be reiterated here; instead, refer to the downloadable sample code or to the previous sample for further details.
... creating a status bar extension many of the concepts introduced here apply to any xul-based application; however, to keep from getting completely overwhelmed, we're going to focus specifically on firefox.
...And 7 more matches

Index - MDN Web Docs Glossary: Definitions of Web-related terms
4 alpn alpn, draft, glossary, needscontent, tls application-layer protocol negotiation (alpn) is a tls extension which indicates what application layer protocol is negotiating the encryped connection without requiring additional round trips.
...not all http responses can be cached, these are the following constraints for an http response to be cached: 61 caldav caldav, glossary, infrastructure caldav (calendaring extensions to webdav) is a protocol standardized by the ietf and used to remotely access calendar data from a server.
... 67 carddav carddav, glossary, infrastructure carddav (vcard extension to webdav) is a protocol standardized by the ietf and used to remote-access or share contact information over a server.
...And 7 more matches

TypeScript support in Svelte - Learn web development
to use it from regular javascript files, just change the file extension from .js to .ts.
... you'll also have to update any corresponding import statements (don't include the .ts in your import statements; typescript chose to omit the extensions).
... there is work in progress to support typescript in svelte projects in several code editors; the most complete support so far is available in the svelte for vs code extension, which is developed and maintained by the svelte team.
...And 7 more matches

Theme concepts
themes developed using the webextensions api in firefox enable you to change the look of the browser by adding images to the header area of the firefox browser; this is the area behind the menu bar, toolbars, address bar, search bar, and tab strip.
... these theme options can be implemented as static themes (although the theme images themselves may be animated) or as dynamic themes created in a browser extension.
... static themes static themes are specified using the same resources as a browser extension: a manifest.json file to define the theme components with those components stored in the same folder as the manifest.json file or a sub folder.
...And 7 more matches

Python binding for NSS
lize nss.nss_init_context nss.nss_shutdown_context release 0.15.0 release date 2014-09-09 scm tag pynss_release_0_15_0 source download https://ftp.mozilla.org/pub/mozilla.org/security/python-nss/releases/pynss_release_0_15_0/src/ change log the primary enhancements in this version was fixing access to extensions in a certificaterequest and giving access to certificaterequest attributes.
... there is a bug in nss which hides the existence of extensions in a csr if the extensions are not contained in the first csr attribute.
...formerly python-nss did not provide access to the attributes in a csr only the extensions, with this release all components of a csr can be accessed.
...And 7 more matches

ANGLE_instanced_arrays - Web APIs
the angle_instanced_arrays extension is part of the webgl api and allows to draw the same object, or groups of similar objects multiple times, if they share the same vertex data, primitive count and type.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 7 more matches

OES_texture_float - Web APIs
the oes_texture_float extension is part of the webgl api and exposes floating-point pixel types for textures.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 7 more matches

OES_texture_half_float - Web APIs
the oes_texture_half_float extension is part of the webgl api and adds texture formats with 16- (aka half float) and 32-bit floating-point components.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 7 more matches

Chapter 3: Introduction to XUL—How to build a more intuitive UI - Archive of obsolete content
before you learn how to develop extensions, let's learn about xul, the xml-based user-interface language, which is one of the building blocks for extensions.
... xul display methods xul is used almost exclusively in mozilla applications like firefox and thunderbird, and extensions for them, but other web browsers based on firefox or the gecko engine, and even web-based content also used xul.
... for example, there is the mozilla amazon browser, which helps with shopping at amazon, and the presentation method in xul, a tool for writing and displaying presentations to try out the code samples in this chapter, save them as text files with .xul extensions and drag and drop them into the firefox browser window.
...And 6 more matches

Adding Toolbars and Toolbar Buttons - Archive of obsolete content
the toolbarpalette is a collection of all toolbar buttons and toolbar items in firefox, including those added by extensions.
... toolbar button icons creating the icons for toolbar buttons is one of the most difficult tasks when making extensions.
...for example, your extension logo icon will probably be the same.
...And 6 more matches

JavaScript Object Management - Archive of obsolete content
the first step to good javascript object management is having a namespace, or a javascript object that contains our code and data, that you know will not conflict with firefox code or other extensions.
...however, most extensions are small projects by individuals, so these examples follow a more practical approach of having just one namespace with the project name.
... /** * controls the browser overlay for the hello world extension.
...And 6 more matches

XPCOM Objects - Archive of obsolete content
if you want to see the list in your current firefox installation, just run the following code in the error console: var str = ""; for (var i in components.classes) { str += i + "\n" }; str a run on firefox 3.6.2 with a few extensions installed yields 876 strings.
...luckily, you'll only need to know a handful of those for extension development.
... this._prefservice.addobserver( "extensions.xulschoolhello.somepref", this, false); }, observe : function(asubject, atopic, adata) { // do stuff here.
...And 6 more matches

Signing an XPI - Archive of obsolete content
for an extension to work in firefox it must be signed by mozilla, not by yourself.
...see signing an extension for a practical guide.
... introduction this article describes how to sign your own firefox extensions with a code-signing certificate on a windows platform.
...And 6 more matches

Install.js - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.
... to make your extension install in mozilla suite, seamonkey, mozilla firefox pre-0.9 and mozilla thunderbird pre-0.7, you need to have an install.js file in the root of your xpi file.
...And 6 more matches

Sunbird Theme Tutorial - Archive of obsolete content
for information on how to find the profile directory, see the mozillazine article: profile folder inside the profile directory, go to the <tt>extensions</tt> directory.
... note: if the <tt>extensions</tt> directory is empty, you are in the wrong place—start again and follow the instructions more carefully.
...create a new directory in the <tt>extensions</tt> directory.
...And 6 more matches

Plug-in Development Overview - Gecko Plugin API Reference
the server looks for the mime type registered by a plug-in, based on the file extension, and starts sending the file to the browser.
...for more information about mime types, see these mime rfcs: rfc-2045: "multipurpose internet mail extensions (mime) part one: format of internet message bodies" rfc-2046: "multipurpose internet mail extensions (mime) part two: media types" rfc-4288: "media type specifications and registration procedures" there are some variations to how plug-ins are handled on different platforms.
... to determine the mime types and file extensions that the plug-in handles, the browser normally uses the content of the registry entries for the plug-in described below in installation using the registry.
...And 6 more matches

Add-ons
among other things, an add-on could: change the appearance or content of particular websites modify the firefox user interface add new features to firefox there are several types of add-ons, but the most common type are extensions.
... developing extensions in the past, there were several toolsets for developing firefox extensions, but as of november 2017, extensions must be built using webextensions apis.
... extensions written using webextensions apis for firefox are designed to be cross-browser compatible.
...And 6 more matches

Certificate functions
function name/documentation source code nss versions cert_addcerttolisttail mxr 3.2 and later cert_addextension mxr 3.5 and later cert_addocspacceptableresponses mxr 3.6 and later cert_addokdomainname mxr 3.4 and later cert_addrdn mxr 3.2.1 and later cert_asciitoname mxr 3.2 and later cert_cachecrl mxr 3.10 and later cert_clearocspcache mxr 3.11.7 and later cert_certchainfromcert mxr 3.2 and later...
...t_createname mxr 3.2.1 and later cert_createocspcertid mxr 3.6 and later cert_createocsprequest mxr 3.6 and later cert_createrdn mxr 3.2.1 and later cert_createsubjectcertlist mxr 3.4 and later cert_createvalidity mxr 3.5 and later cert_crlcacherefreshissuer mxr 3.7 and later cert_decodealtnameextension mxr 3.10 and later cert_decodeauthinfoaccessextension mxr 3.10 and later cert_decodeauthkeyid mxr 3.10 and later cert_decodeavavalue mxr 3.4 and later cert_decodebasicconstraintvalue mxr 3.2 and later cert_decodecertfrompackage mxr 3.4 and later cert_decodecertificatepoliciesextension mxr 3.2 and later...
... cert_decodecertpackage mxr 3.2 and later cert_decodecrldistributionpoints mxr 3.10 and later cert_decodedercrl mxr 3.2 and later cert_decodedercrlwithflags mxr 3.6 and later cert_decodegeneralname mxr 3.4 and later cert_decodenameconstraintsextension mxr 3.10 and later cert_decodeocspresponse mxr 3.6 and later cert_decodeoidsequence mxr 3.2 and later cert_decodeprivkeyusageperiodextension mxr 3.10 and later cert_decodetruststring mxr 3.4 and later cert_decodeusernotice mxr 3.2 and later cert_dernametoascii mxr 3.4 and later cert_destroycertarray mxr 3.2 and later cert_destroycertificate mxr ...
...And 6 more matches

NSS functions
function name/documentation source code nss versions cert_addcerttolisttail mxr 3.2 and later cert_addextension mxr 3.5 and later cert_addocspacceptableresponses mxr 3.6 and later cert_addokdomainname mxr 3.4 and later cert_addrdn mxr 3.2.1 and later cert_asciitoname mxr 3.2 and later cert_cachecrl mxr 3.10 and later cert_clearocspcache mxr 3.11.7 and later cert_certchainfromcert mxr 3.2 and later...
...t_createname mxr 3.2.1 and later cert_createocspcertid mxr 3.6 and later cert_createocsprequest mxr 3.6 and later cert_createrdn mxr 3.2.1 and later cert_createsubjectcertlist mxr 3.4 and later cert_createvalidity mxr 3.5 and later cert_crlcacherefreshissuer mxr 3.7 and later cert_decodealtnameextension mxr 3.10 and later cert_decodeauthinfoaccessextension mxr 3.10 and later cert_decodeauthkeyid mxr 3.10 and later cert_decodeavavalue mxr 3.4 and later cert_decodebasicconstraintvalue mxr 3.2 and later cert_decodecertfrompackage mxr 3.4 and later cert_decodecertificatepoliciesextension mxr 3.2 and later...
... cert_decodecertpackage mxr 3.2 and later cert_decodecrldistributionpoints mxr 3.10 and later cert_decodedercrl mxr 3.2 and later cert_decodedercrlwithflags mxr 3.6 and later cert_decodegeneralname mxr 3.4 and later cert_decodenameconstraintsextension mxr 3.10 and later cert_decodeocspresponse mxr 3.6 and later cert_decodeoidsequence mxr 3.2 and later cert_decodeprivkeyusageperiodextension mxr 3.10 and later cert_decodetruststring mxr 3.4 and later cert_decodeusernotice mxr 3.2 and later cert_dernametoascii mxr 3.4 and later cert_destroycertarray mxr 3.2 and later cert_destroycertificate mxr ...
...And 6 more matches

Plug-in Development Overview - Plugins
the server looks for the mime type registered by a plug-in, based on the file extension, and starts sending the file to the browser.
...for more information about mime types, see these mime rfcs: rfc-2045: "multipurpose internet mail extensions (mime) part one: format of internet message bodies" rfc-2046: "multipurpose internet mail extensions (mime) part two: media types" rfc-4288: "media type specifications and registration procedures" there are some variations to how plug-ins are handled on different platforms.
... to determine the mime types and file extensions that the plug-in handles, the browser normally uses the content of the registry entries for the plug-in described below in installation using the registry.
...And 6 more matches

WEBGL_depth_texture - Web APIs
the webgl_depth_texture extension is part of the webgl api and defines 2d depth and depth-stencil textures.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 6 more matches

WEBGL_draw_buffers - Web APIs
the webgl_draw_buffers extension is part of the webgl api and enables a fragment shader to write to several textures, which is useful for deferred shading, for example.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 6 more matches

Intl - JavaScript
a unicode bcp 47 locale identifier consists of a language code, (optionally) a script code, (optionally) a region (or country) code, (optionally) one or more variant codes, and (optionally) one or more extension sequences, with all present components separated by hyphens.
... bcp 47 also allows for extensions, each consisting of a single digit or letter (other than "x") and one or more two- to eight-letter or digit tags, all separated by hyphens.
... javascript internationalization functions use the "u" (unicode) extension, which can be used to request additional customization of collator, numberformat, or datetimeformat objects.
...And 6 more matches

Media container formats (file types) - Web media technologies
the mime types and extensions for each are listed.the most commonly used containers for media on the web are probably mpeg-4 (mp4), quicktime movie (mov), and the wavefile audio file format (wav).
...not all of these are broadly supported by browsers, however; some combinations of container and codec are sometimes given their own file extensions and mime types as a matter of convenience, or because of their ubiquity.
... for example, an ogg file with only an opus audio track is sometimes referred to as an opus file, and might even have the extension .opus.
...And 6 more matches

Adding Events and Commands - Archive of obsolete content
it isn't hard for xul code to control the content on pages being loaded or displayed, as we will see later on, but it can be hard for your extension xul code to receive information from pages in a secure manner.
... suppose your extension interacts with pages from a website, and you want some actions on this site to trigger actions in your extension.
... one way to solve this is to have the actions on the site to generate a custom event that can be easily recognized by your extension.
...And 5 more matches

Intercepting Page Loads - Archive of obsolete content
this is how the tamper data extension and others do it.
... you won't be able to make dom modifications like with the load events, since these notifications are triggered before the response arrives and is parsed into dom tree, so this is not the best approach for the typical greasemonkey-style extensions.
...picking the right filter not only simplifies your code, but also reduces the performance impact your extension will have in regular navigation.
...And 5 more matches

Mozilla Documentation Roadmap - Archive of obsolete content
« previousnext » mozilla documentation firefox extension development is still an immature discipline, with a developer base consisting mostly of hobbyists and just a few organized development groups.
... there's a great deal of free online documentation available on xul and extension development, but finding it and turning it into useful information can be a daunting task.
...this tutorial was aimed at compiling all the right resources for extension development and putting them in the right context, but there's much more to learn, and knowing how to find it is part of what we felt was necessary to teach.
...And 5 more matches

Introduction to XUL - Archive of obsolete content
for this reason, we've defined a mime type "text/xul" mapped to files with the extension ".xul".
... the chrome protocol is another mozilla extension allowing the exact location of files involved in the chrome description to be moved without affecting the xul source.
...a : b; } ]]> </html:script> javascript extensions mozilla has found it necessary to make a few extensions to javascript, to support new features not conceived of in a strictly browser environment.
...And 5 more matches

XQuery - Archive of obsolete content
while xquery is currently not supported in firefox (whether through javascript to developers or to browser users), at least one extension has been developed to give a preliminary support for xquery for browser users (and serving as a simple model for how xquery can be implemented within extensions).
... xquseme is a working proof-of-concept (so far tested on windows and linux with java installed; mac does not work) extension which allows one to perform xqueries on external urls, the currently loaded webpage (even if originally from poorly formed html), and/or xml (including well-formed xhtml) documents stored locally.
... the extension now includes and interfaces with the open-source version of saxonica's saxon b (though this extension currently only performs the xqueries).
...And 5 more matches

Accessibility Features in Firefox
basic screen reader accessibility is available via the fire vox extension.
... the accessibility extension may be installed on top of firefox, allowing keyboard access to document structure.
... many users are finding the true greatness of firefox lies in support for third party extensions.
...And 5 more matches

CSUN Firefox Materials
basic screen reader accessibility is available via gnopernicus or the fire vox extension.
... the accessibility extension may be installed on top of firefox, allowing keyboard access to document structure.
...many users are finding the true greatness of firefox lies in support for third party extensions.
...And 5 more matches

Creating a Firefox sidebar
there are two ways to create a sidebar for firefox users: the social api and an extension.
... an extension an extension is a kind of add-ons that adds new functionalities to firefox.
... there is a wide range of extensions available, and some of them provide a sidebar.
...And 5 more matches

XPCOM
gecko or necko) or by an application or even by an extension.
...effectively, it is a different platform.bundling multiple binary componentsbinary xpcom components are sometimes required to implement low-level features for extensions.
...this can create a difficult situation for extension developers trying to support multiple gecko versions (firefox 2 and 3, for example).creating a python xpcom componentcreating applications with mozilla already provides a tutorial for making a simple javascript or c++ component (implementing the nsisimple interface).
...And 5 more matches

Creating a Custom Column
one of the new and exciting features available to thunderbird extension developers in thunderbird 2.0 is the ability to easily create and handle custom columns in thunderbird's main view.
... getting started in this example we will be developing a small extension that will be adding a column that will display the "reply-to:" field of an email (if it exists, it if often not set).
... if you are unfamiliar with the setup and creation of an extension please read building a thunderbird extension.
...And 5 more matches

Scripting plugins - Plugins
« previousnext » xxx: dummy p element this document describes the new cross-browser npapi extensions, commonly called npruntime, that have been developed by a group of browser and plugin vendors, including the mozilla foundation, adobe, apple, opera, and sun microsystems (see press release).
... this document also explains how to make a plugin use these new extensions to be scriptable as well as how to access objects in a browser.
...as an answer to this large gap in the netscape plugin api, an extension to the api has been developed that lets plugins be scriptable again, independent of java.
...And 5 more matches

EXT_color_buffer_half_float - Web APIs
the ext_color_buffer_half_float extension is part of the webgl api and adds the ability to render to 16-bit floating-point color buffers.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 5 more matches

EXT_disjoint_timer_query - Web APIs
the ext_disjoint_timer_query extension is part of the webgl api and provides a way to measure the duration of a set of gl commands, without stalling the rendering pipeline.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 5 more matches

EXT_float_blend - Web APIs
the webgl api's ext_float_blend extension allows blending and draw buffers with 32-bit floating-point components.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 5 more matches

OES_texture_float_linear - Web APIs
the oes_texture_float_linear extension is part of the webgl api and allows linear filtering with floating-point pixel types for textures.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 5 more matches

OES_texture_half_float_linear - Web APIs
the oes_texture_half_float_linear extension is part of the webgl api and allows linear filtering with half floating-point pixel types for textures.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 5 more matches

OES_vertex_array_object - Web APIs
the oes_vertex_array_object extension is part of the webgl api and provides vertex array objects (vaos) which encapsulate vertex array states.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 5 more matches

OVR_multiview2 - Web APIs
the ovr_multiview2 extension is part of the webgl api and adds support for rendering into multiple views simultaneously.
... for more information, see also: multiview on webxr three.js multiview demo multiview in babylon.js optimizing virtual reality: understanding multiview multiview webgl rendering for oculus browser 6.0+ webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 5 more matches

WEBGL_color_buffer_float - Web APIs
the webgl_color_buffer_float extension is part of the webgl api and adds the ability to render to 32-bit floating-point color buffers.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 5 more matches

WEBGL_debug_renderer_info - Web APIs
the webgl_debug_renderer_info extension is part of the webgl api and exposes two constants with information about the graphics driver for debugging purposes.
... depending on the privacy settings of the browser, this extension might only be available to privileged contexts.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
...And 5 more matches

Chapter 4: Using XPCOM—Implementing advanced processes - Archive of obsolete content
firefox itself includes a great number of xpcom components, and they can be used in extensions as well.
... sometimes an extension will be packaged with a special xpcom component developed specifically for it.
... the xpidl (cross-platform idl) used by mozilla is a partial extension to the corba idl.
...And 4 more matches

XUL Application Packaging - Archive of obsolete content
xulrunner application packages are standard toolkit bundles (like a firefox extension), with one additional manifest file (application.ini) which helps describe the application.
... xul app packages are typically zipped into an archive with the extension .xulapp or .xpi.
... application.ini the application.ini manifest is located at the root of the extension and provides metadata that allows xulrunner to launch the application properly.
...And 4 more matches

Interface Compatibility
achieving this compatibility may require rebuilding the extension with a new version of the jetpack sdk.
... javascript/xul interfaces traditional extensions written using xul overlays and xpcom have access to the full power of the mozilla platform.
...changes should not be taken lightly, however: especially if a change is likely to affect many extensions, the change should try to maintain backwards compatibility by using optional/default parameters or other javascript techniques.
...And 4 more matches

NSS 3.16.2 release notes
the tls application layer protocol negotiation (alpn) extension is also supported on the server side.
... new functions in cert.h ​cert_addextensionbyoid - adds an extension to a certificate.
... it is the same as cert_addextension except that the oid is represented by a secitem instead of a secoidtag.
...And 4 more matches

sslerr.html
requires ciphers more secure than those supported by client." ssl_error_internal_error_alert -12188 "peer reports it experienced an internal error." ssl_error_user_canceled_alert -12187 "peer user canceled handshake." ssl_error_no_renegotiation_alert -12186 "peer does not permit renegotiation of ssl security parameters." ssl_error_unsupported_extension_alert -12184 "ssl peer does not support requested tls hello extension." ssl_error_certificate_unobtainable_alert -12183 "ssl peer could not obtain your certificate from the supplied url." ssl_error_unrecognized_name_alert -12182 "ssl peer has no certificate for the requested dns name." ssl_error_bad_cert_status_response_alert -12181 "ssl peer was...
... sec_error_extension_value_invalid -8158 certificate extension value is invalid.
... sec_error_extension_not_found -8157 certificate extension not found.
...And 4 more matches

TPS Tests
tps consists of a firefox extension of the same name, along with a python test runner, both of which live inside mozilla-central.
... the python test runner will read a test file (in javascript format), setup one or more firefox profiles with the necessary extensions and preferences, then launch firefox and pass the test file to the extension.
... the extension will read the test file and perform a series of actions specified therein, such as populating a set of bookmarks, syncing to the sync server, making bookmark modifications, etc.
...And 4 more matches

Setting up the Gecko SDK
building a windows project this section is writting for those of you who do not wish to install visual studio or the express edition, allowing the user to be able to create commercial extensions without buying the full version of visual studio and allowing them to use their own editors.
... first, you need to get the sdk, this project uses the following tools to compile the extension for use.
... i used a different firefox profile for testing purposes called extensions.
...And 4 more matches

nsIAnnotationService
supported for use from trusted code, such as extensions, but not from web content.
...use the form "namespace/value", so your name would be like "bills_extension/page_state" or "history/thumbnail".
...if there is an important annotation that the user or extension wants to keep, you should add a bookmark for the page and use an expire_never annotation.
...And 4 more matches

Troubleshooting XPCOM components registration
if using firefox 4 / xulrunner 2.0, make sure that your extension is unpacked and you declared the binary component in your chrome.manifest.
...to learn more about enabling chrome errors, see "how can i see errors in my code" in the extension faqs.
...this should not occur if you uninstalled/installed your extension via the extension manager.
...And 4 more matches

Add to iPhoto
this extension for mac os x serves as a demonstration of how to use js-ctypes to call mac os x carbon, core foundation, and other system frameworks from an extension written entirely in javascript.
... note: this extension uses carbon routines, which can no longer be used in firefox add-ons now that firefox is a 64-bit application.
... you can download an installable version of this extension on amo.
...And 4 more matches

EXT_blend_minmax - Web APIs
the ext_blend_minmax extension is part of the webgl api and extends blending capabilities by adding two new blend equations: the minimum or maximum color components of the source and destination colors.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 4 more matches

EXT_color_buffer_float - Web APIs
the ext_color_buffer_float extension is part of webgl and adds the ability to render a variety of floating point formats.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 4 more matches

EXT_sRGB - Web APIs
the ext_srgb extension is part of the webgl api and adds srgb support to textures and framebuffer objects.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 4 more matches

EXT_shader_texture_lod - Web APIs
the ext_shader_texture_lod extension is part of the webgl api and adds additional texture functions to the opengl es shading language which provide the shader writer with explicit control of lod (level of detail).
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 4 more matches

OES_element_index_uint - Web APIs
the oes_element_index_uint extension is part of the webgl api and adds support for gl.unsigned_int types to webglrenderingcontext.drawelements().
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 4 more matches

OES_standard_derivatives - Web APIs
the oes_standard_derivatives extension is part of the webgl api and adds the glsl derivative functions dfdx, dfdy, and fwidth.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 4 more matches

WebGLRenderingContext.compressedTexImage[23]D() - Web APIs
compressed image formats must be enabled by webgl extensions before using these methods.
...compressed image formats must be enabled by webgl extensions before using this method.
...possible values: when using the webgl_compressed_texture_s3tc extension: ext.compressed_rgb_s3tc_dxt1_ext ext.compressed_rgba_s3tc_dxt1_ext ext.compressed_rgba_s3tc_dxt3_ext ext.compressed_rgba_s3tc_dxt5_ext when using the webgl_compressed_texture_s3tc_srgb extension: ext.compressed_srgb_s3tc_dxt1_ext ext.compressed_srgb_alpha_s3tc_dxt1_ext ext.compressed_srgb_alpha_s3tc_dxt3_ext ext.compressed_srgb_alpha_s3tc_dxt5_ext when using the webgl_compressed_texture_etc extension: ext.compressed_r11_eac ext.compressed_signed_r11_eac ext.compressed_rg11_eac ext.compressed_signed_rg11_eac ext.compr...
...And 4 more matches

Compressed texture formats - Web APIs
by default, no compressed formats are available: a corresponding compressed texture format extension must first be enabled.
... usage of compressed formats first requires activating the respective extension with webglrenderingcontext.getextension().
... if supported, it will return an extension object with constants for the added formats and the formats will also be returned by calls to gl.getparameter(gl.compressed_texture_formats).
...And 4 more matches

WebGL best practices - Web APIs
know your limits (and extensions) the availability of most webgl extensions depends on the client system.
... when using webgl extensions, if possible, try to make them optional by gracefully adapting to the case there they are not supported.
... take advantage of universally supported webgl 1 extensions these webgl 1 extensions are universally supported: angle_instanced_arrays ext_blend_minmax oes_element_index_uint oes_standard_derivatives oes_vertex_array_object webgl_debug_renderer_info webgl_lose_context (see also: https://jdashg.github.io/misc/webgl/webgl-feature-levels.html) consider polyfilling these into webglrenderingcontext, like: https://github.com/jdashg/misc/blob/master/webgl/webgl-v1.1.js universally supported limits the minimum requirements for webgl are quite low.
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On page load - Archive of obsolete content
progress listeners allow extensions to be notified of events associated with documents loading in the browser and with tab switching events.
...or from seamonkey chrome://navigator/content/navigator.xul attaching a script attach a script to your overlay (see "attaching a script to an overlay") that adds a load event listener to appcontent element (browsers) or messagepane (mail): window.addeventlistener("load", function load(event){ window.removeeventlistener("load", load, false); //remove listener, no longer needed myextension.init(); },false); var myextension = { init: function() { var appcontent = document.getelementbyid("appcontent"); // browser if(appcontent){ appcontent.addeventlistener("domcontentloaded", myextension.onpageload, true); } var messagepane = document.getelementbyid("messagepane"); // mail if(messagepane){ messagepane.addeventlistener("load", function(event) { mye...
... if(doc.location.href.search("forum") > -1) alert("a forum page is loaded"); // add event listener for page unload aevent.originaltarget.defaultview.addeventlistener("unload", function(event){ myextension.onpageunload(event); }, true); }, onpageunload: function(aevent) { // do something } }; current firefox trunk nightlies will fire the onpageload function for not only documents, but xul:images (favicons in tabbrowser).
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Conclusion - Archive of obsolete content
« previous you now have a working mozilla extension installer!
... to test it, try installing the extension on a fresh copy of mozilla by loading the file in your mozilla browser (this works whether you load it from the web or from your local hard drive via a file:/// url).
...try installing the extension, restarting mozilla, and see if it works.
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Making it into a static overlay - Archive of obsolete content
now that we have a working mozilla extension that shows tinderbox status, we need to make it distributable to other users.
... the two ways of doing that are to integrate it into the mozilla codebase (in which case it is no longer an extension but rather part of the default mozilla distribution) and to package it into an installer that users can run from within mozilla to add the extension to their mozilla installation.
... most extensions are distributed as installer packages, and that's how we'll distribute our extension.
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Using XPInstall to Install Plugins - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.
...an xpi package is in fact a zip file with the xpi file extension (e.g.
...And 3 more matches

Introduction - Archive of obsolete content
there are several ways you can use xul: firefox extension an extension adds functionality to the browser itself, often in the form of extra toolbars, context menus, or customizations to the browser's user interface.
... this is done using a feature of xul called an overlay, which allows the ui provided from one source, in this case, the firefox browser, to be merged together with the ui from the extension.
... extensions may also be applied to other mozilla based products such as thunderbird.
...And 3 more matches

2006-10-20 - Archive of obsolete content
adding extension to extensions/ folder originally posted on oct 19th: christopher finke is currently learning how to compile firefox.
... though he has succeeded in building firefox he has so far failed to compile firefox with his own extensions of choice so that his custom build would have those extensions enabled in the end product.
... he stated that he was able to pre-package the extensions that he wanted by following this walkthrough and a little bit of help from this post.
...And 3 more matches

Introduction to Public-Key Cryptography - Archive of obsolete content
for more detailed information about ssl, see "introduction to ssl." signed and encrypted email some email programs support digitally signed and encrypted email using a widely accepted protocol known as secure multipurpose internet mail extension (s/mime).
... optional certificate extensions, which may provide additional data used by the client or server.
... for example, the certificate type extension indicates the type of certificate-that is, whether it is a client ssl certificate, a server ssl certificate, a certificate for signing email, and so on.
...And 3 more matches

Mozilla XForms Specials - Archive of obsolete content
introduction this article gives an overview of where the mozilla xforms extension deviates from the official xforms 1.0 specification .
... this covers both limitations in the extension, and custom extensions.
...instead of using digest('abc', 'sha-1') explicitly use the third parameter (the results are equal): digest('abc', 'sha-1', 'base64') (limitation tracked in bug 477857) extensions enumerating instances the standardized nsixformsmodelelement does not allow one to enumerate over all possible instances, but only to retrieve instances by their name.
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Client-side tooling overview - Learn web development
it is available as a node.js command-line tool and a vs code extension.
...for example: sass/scss: this css extension allows you to use variables, nested rules, mixins, functions, and many other features, some of which are available in native css (such as variables), and some of which aren't.
... others there are a number of other tool types available to use in the post-development stage, including code climate for gathering code quality metrics, the webhint browser extension for performing runtime analysis of cross-browser compatibility and other checks, github bots for providing more powerful github functionality, updown for providing app uptime monitoring, and so many more!
...And 3 more matches

Testopia
testopia is a test case management extension for bugzilla.
...despite bugzilla 5.0 has already been released a few months ago, we don't plan to release a fix for testopia immediately, because it's currently under heavy work to make testopia a fully self-contained extension, which means that all tr_*.cgi scripts which are currently in the bugzilla/ root directory are being moved into extensions/testopia/lib/.
... the good news is that the current code in the git repository already works with bugzilla 5.0, and so if you upgraded to 5.0 already, and if you don't mind having a work-in-progress extension on your machine, you can decide to pull the code from the git repository.
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Communicating with frame scripts
asynchronous messaging to send an asynchronous message the frame script uses the global sendasyncmessage() function: // frame script sendasyncmessage("my-addon@me.org:my-e10s-extension-message"); sendasyncmessage() takes one mandatory parameter, which is the name of the message.
... the example below sends a message named "my-e10s-extension-message", with a data payload containing details and tag properties, and exposes the event.target object as a cpow: // frame script addeventlistener("click", function (event) { sendasyncmessage("my-addon@me.org:my-e10s-extension-message", { details : "they clicked", tag : event.target.tagname }, { target : event.target }); }, false); to receive messages from content, a chro...
... objects an object whose properties are any cpows exposed by the sender as the third argument to sendasyncmessage() in the example below the listener just logs all the messages details: // chrome script messagemanager.addmessagelistener("my-addon@me.org:my-e10s-extension-message", listener); function listener(message) { console.log(message.name); console.log(message.sync); console.log(message.data); console.log(message.target); console.log(message.objects); } so combining this message listener with the message above will give console output somewhat like this, when the user clicks a <div>: "my-addon@me.org:my-e10s-extension-message" false object { d...
...And 3 more matches

Index
9 localization content best practices apps, extensions, internationalization, localization, mozilla, l10n, l12y this document provides best practices for developers to create localizable code, and describes how to avoid some localizability (l12y) common mistakes.
... 21 localizing extension descriptions add-ons, extensions, guide, internationalization, localization this article provides details on how to go about localizing the descriptions of mozilla add-ons, as well as for other metadata about your add-on.
... 22 localizing extension metadata on addons.mozilla.org add-ons, extensions, internationalization, localization amo supports localized metadata for each extension.
...And 3 more matches

extIApplication
method overview boolean quit() boolean restart() void getextensions(extiextensionscallback acallback) attributes the following interfaces are available to all applications: attribute type description id readonly attribute astring the id of the application.
... extensions readonly attribute extiextensions the extensions object for the application.
... contains a list of all installed extensions.
...And 3 more matches

XPCOM ABI
(this is an internals detail and should be of no concern to an extension developer.) extension installation when the application (e.g.
... a common point of compatibility check is during the installation of extensions.
... if an extension provides binary xpcom components, it should declare their xpcom abi in the install manifest.
...And 3 more matches

XPI
xpi modules (so called "bundles") are employed to install a wide variety of software, including plugins, extensions, themes, and thunderbird dictionaries.
...when downloaded or dropped into an extension manager, xpinstall automatically interacts with the installation instructions contained in the xpi, and installs the contained software.
... note: starting in gecko 2.0, xpi files are no longer unpacked when extensions are installed.
...And 3 more matches

EXT_frag_depth - Web APIs
the ext_frag_depth extension is part of the webgl api and enables to set a depth value of a fragment from within the fragment shader.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 3 more matches

Performance - Web APIs
performance.memory read only a non-standard extension added in chrome, this property provides an object with basic memory usage information.
... performance timeline level 2the definition of 'performance extensions' in that specification.
... performance timelinethe definition of 'performance extensions' in that specification.
...And 3 more matches

WEBGL_compressed_texture_astc - Web APIs
the webgl_compressed_texture_astc extension is part of the webgl api and exposes adaptive scalable texture compression (astc) compressed texture formats to webgl.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 3 more matches

WEBGL_compressed_texture_pvrtc - Web APIs
the webgl_compressed_texture_pvrtc extension is part of the webgl api and exposes four pvrtc compressed texture formats.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 3 more matches

WEBGL_debug_shaders - Web APIs
the webgl_debug_shaders extension is part of the webgl api and exposes a method to debug shaders from privileged contexts.
... this extension is not directly available to web sites as the way of how the shader is translated may uncover personally-identifiable information to the web page about the kind of graphics card in the user's computer.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
...And 3 more matches

WebGLRenderingContext.compressedTexSubImage2D() - Web APIs
compressed image formats must be enabled by webgl extensions before using this method or a webgl2renderingcontext must be used.
...compressed image formats must be enabled by webgl extensions before using this method.
... possible values: when using the webgl_compressed_texture_s3tc extension: ext.compressed_rgb_s3tc_dxt1_ext ext.compressed_rgba_s3tc_dxt1_ext ext.compressed_rgba_s3tc_dxt3_ext ext.compressed_rgba_s3tc_dxt5_ext when using the webgl_compressed_texture_s3tc_srgb extension: ext.compressed_srgb_s3tc_dxt1_ext ext.compressed_srgb_alpha_s3tc_dxt1_ext ext.compressed_srgb_alpha_s3tc_dxt3_ext ext.compressed_srgb_alpha_s3tc_dxt5_ext when using the webgl_compressed_texture_etc extension: ext.compressed_r11_eac ext.compressed_signed_r11_eac ext.compressed_rg11_eac ext.compressed_signed_rg11_eac ext.compressed_rgb8_etc2 ext.compressed_rgba8_etc2_eac ext.compressed_srgb8_etc2 ext.compressed_srgb8_alpha8_etc2_eac ex...
...And 3 more matches

Evolution of HTTP - HTTP
more than 15 years of extensions thanks to its extensibility – creating new headers or methods is easy – and even if the http/1.1 protocol was refined over two revisions, rfc 2616 published in june 1999 and the series of rfc 7230-rfc 7235 published in june 2014 in prevision of the release of http/2, this protocol has been extremely stable over more than 15 years.
...but all these *dav extensions had a flaw: they had to be implemented by the servers to be used, which was quite complex.
...the drawback of the rest model resides in the fact that each website defines its own non-standard restful api and has total control on it; unlike the *dav extensions were clients and servers are interoperable.
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HTTP Index - HTTP
on top of these basic concepts, numerous extensions have appeared over the years, adding new functionality and new semantics by creating new http methods or headers.
... 9 mime types (iana media types) content-type, guide, http, mime types, meta, request header, response header, application/javascript, application/json, application/xml a media type (also known as a multipurpose internet mail extensions or mime type) is a standard that indicates the nature and format of a document, file, or assortment of bytes.
... 10 incomplete list of mime types audio, file types, files, http, mime, mime types, php, reference, text, types, video here is a list of mime types, associated by type of documents, ordered by their common extensions.
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Protocol upgrade mechanism - HTTP
sec-websocket-extensions specifies one or more protocol-level websocket extensions to ask the server to use.
... using more than one sec-websocket-extension header in a request is permitted; the result is the same as if you included all of the listed extensions in one such header.
... sec-websocket-extensions: extensions extensions a comma-separated list of extensions to request (or agree to support).
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HTTP resources and specifications - HTTP
designed with extensibility in mind, it has seen numerous additions over the years; this lead to its specification being scattered through numerous specification documents (in the midst of experimental abandoned extensions).
...nsfer protocol (http/1.1): semantics and content proposed standard rfc 7232 hypertext transfer protocol (http/1.1): conditional requests proposed standard rfc 7233 hypertext transfer protocol (http/1.1): range requests proposed standard rfc 7234 hypertext transfer protocol (http/1.1): caching proposed standard rfc 5861 http cache-control extensions for stale content informational rfc 8246 http immutable responses proposed standard rfc 7235 hypertext transfer protocol (http/1.1): authentication proposed standard rfc 6265 http state management mechanism defines cookies proposed standard draft spec cookie prefixes ietf draft draft spec same-site cookies ietf dra...
... proposed standard rfc 7239 forwarded http extension proposed standard rfc 6455 the websocket protocol proposed standard rfc 5246 the transport layer security (tls) protocol version 1.2 this specification has been modified by subsequent rfcs, but these modifications have no effect on the http protocol.
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Intl.Locale.prototype.hourCycle - JavaScript
like other additional locale data, hour cycle type is an extension subtag, which extends the data contained in a locale string.
... adding an hour cycle via the locale string in the unicode locale string spec, the hour cycle is a locale string "extension subtag".
... these subtags add additional data about the locale, and are added to locale identifiers by using the -u extension key.
...And 3 more matches

Object.isFrozen() - JavaScript
var vacuouslyfrozen = object.preventextensions({}); object.isfrozen(vacuouslyfrozen); // === true // a new object with one property is also extensible, // ergo not frozen.
... var oneprop = { p: 42 }; object.isfrozen(oneprop); // === false // preventing extensions to the object still doesn't // make it frozen, because the property is still // configurable (and writable).
... object.preventextensions(oneprop); object.isfrozen(oneprop); // === false // ...but then deleting that property makes the object // vacuously frozen.
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Strict mode - JavaScript
ar infinity = 5; // throws a typeerror // assignment to a non-writable property var obj1 = {}; object.defineproperty(obj1, 'x', { value: 42, writable: false }); obj1.x = 9; // throws a typeerror // assignment to a getter-only property var obj2 = { get x() { return 17; } }; obj2.x = 5; // throws a typeerror // assignment to a new property on a non-extensible object var fixed = {}; object.preventextensions(fixed); fixed.newprop = 'ohai'; // throws a typeerror third, strict mode makes attempts to delete undeletable properties throw (where before the attempt would simply have no effect): 'use strict'; delete object.prototype; // throws a typeerror fourth, strict mode prior to gecko 34 requires that all properties named in an object literal be unique.
... second, in strict mode it's no longer possible to "walk" the javascript stack via commonly-implemented extensions to ecmascript.
... in normal code with these extensions, when a function fun is in the middle of being called, fun.caller is the function that most recently called fun, and fun.arguments is the arguments for that invocation of fun.
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mimeTypes.rdf corruption - SVG: Scalable Vector Graphics
this page explains a problem that can cause svg to stop working in mozilla due to the way mozilla maps filename extensions to media types.
...for files loaded locally, it first looks in a cache of filename extension to media type mappings (stored in a mozilla profile file called mimetypes.rdf), and if it doesn't find a media type there, it asks the operating system.
...first, certain actions can cause the media types cache in mimetypes.rdf to associate a filename extension with the wrong media type.
...And 3 more matches

preferences/service - Archive of obsolete content
example: var name = "extensions.checkcompatibility.nightly"; require("sdk/preferences/service").set(name, false); get(name, defaultvalue) gets the application preference name.
... example: var name = "extensions.checkcompatibility.nightly"; var nightlycompatchk = require("sdk/preferences/service").get(name); has(name) parameters name : string preference name.
... defaultvalue example: var name = "extensions.checkcompatibility.nightly"; if (require("sdk/preferences/service").has(name)) { // ...
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console - Archive of obsolete content
if you're developing your add-on using the extension auto-installer, then the add-on is installed in firefox, meaning that messages will appear in the browser console.
... there are two system preferences that can be used to override this default: extensions.sdk.console.loglevel: if set, this determines the logging level for all installed sdk-based add-ons.
... extensions.extensionid.sdk.console.loglevel, where extensionid is an add-on's program id.
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Sidebar - Archive of obsolete content
see the creating a firefox sidebar tutorial for step-by-step instructions on creating a firefox sidebar extension.
...users have been known to complain about this "feature", and if two or more extensions try to open their sidebars on startup, the user will see a flurry of sidebars opening and closing with which ever extension going last "winning".
...to open a page in the "viewwebpanelssidebar" from chrome code (browser/addon/extension) such as from menuitem, it can call: openwebpanel(atitle, auri); accessing the sidebar from a browser.xul script the sidebar content is always in a document separate from the main browser document (the sidebar is actually implemented as a xul browser element).
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Default Preferences - Archive of obsolete content
introduction a key part of any extension is the default settings that come with it.
...default preferences are set similarly but inside an extension and use the pref() function.
... setting default preferences while most of an extension's directories can be named arbitrarily and mapped using a chrome manifest, default preferences must be in very particular spot: | extension root +--|content +--|skin +--|defaults +--|preferences to add preferences simply drop a .js file into that directory and mozilla will read it and set the appropriate preferences.
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Adding menus and submenus - Archive of obsolete content
if your extension requires custom xul windows, you may also need to have menus on those windows.
...if your extension involves menus in any way, you should test it on mac os x to make sure everything works adequately.
... adding elements to existing menus just as explained in the previous sections, the best place to overlay your extension menu is inside the tools menu.
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Adding windows and dialogs - Archive of obsolete content
to open a new dialog, use the function window.opendialog, an extension of the open function.
... using the prompt service is the recommended way to create common dialogs in an extension.
...it's ok to use this function if you're just debugging some problem and want to see if the program reaches a specific line of code, or to inspect the value of a variable, but your final extension should not have alert calls anywhere.
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The Box Model - Archive of obsolete content
in order to use this page, you'll need to install the remote xul manager extension and add developer.mozilla.org to the whitelist.
...at any rate, it can always be overriden using css, so your extension won't lose skinability because of it.
... exercise use the dom inspector extension to look into the firefox chrome.
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Session store API - Archive of obsolete content
session store makes it possible for extensions to easily save and restore data across firefox sessions.
... there is a simple api that lets extensions access the session store feature.
... one key scenario in which supporting this feature can be crucial for an extension: firefox 2 lets users undo the closing of tabs.
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List of Mozilla-Based Applications - Archive of obsolete content
dogtag certificate system uses nss dojo javascript toolkit uses mozilla rhino in shrinksafe eclipse platform open development platform the ajax toolkit framework, standard widget toolkit and eclipsemozilla projects make use of mozilla elixon wcms/xul web content management system fully remote xul wcms (no need to install extensions).
...velopment tool openoffice.org office suite uses nss openswan implementation of ipsec for linux uses nss orca browser web browser gecko-based version of avant browser pale moon web browser optimized browser developed by moonchild productions for gnu/linux & windows platforms, originally forked from firefox palo suite excel extension uses prism partygaming online gaming product uses gecko pencil tool for making diagrams and gui prototyping available as a firefox extension or a standalone app pentaho bi suite commercial open source business intelligence uses xul and mozilla rhino persevere tools for persistence and distributed computing uses mozilla rhino ...
...phloneme publishing tool for vocab collab phped php editor embedded mozilla browser in product pidgin im client uses nss plain old webserver extension and standalone webserver 5,000 users and 30,000 downloads poe::xul framework for remote xul application in poe postbox email client started as a fork of thunderbird printgroove jt suite print process software uses xulrunner and spidermonkey prism (was webrunner) single-site browser xulrunner application pro/engineer wildfire cadcam product psycrunner chat, messenger, multicast toolkit about 1,000 users – xulrunner version of psyczilla extension pyjamas-desktop a python web widget toolkit uses...
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Popup Guide - Archive of obsolete content
using popups in extensions extensions may add additional menuitems either to a menu on the menu bar or to the context menu.
... in addition, an extension may add an entirely new menu.
... for example, an extension might wish to add a new command on the tools menu to open a dialog specific to the extension.
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Using the standard theme - Archive of obsolete content
by default, no style is associated with xul extension windows or dialogs.
... at the beginning, there is no style when creating a new xul <tt>window</tt> (or a new <tt>dialog</tt>, for that matter) in your extension, and you do not associate a style sheet with it, your widgets will be unstyled.
...if you are only going to use these global style sheets, you of course do not need a <tt>skin</tt> directory in your extension package, and also do not have to register a style in the <tt>chrome.manifest</tt>.
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XULRunner Hall of Fame - Archive of obsolete content
sqlite manager manage all your sqlite databases using this lightweight extension for firefox, thunderbird, seamonkey, songbird, komodo etc.
...both firefox extension and xulrunner-based standalone application available.
...latest release: 1.2 november 2008 - source cocoapsyc.app a psyc im/chat client for mac os x (also available as a firefox extension).
...And 2 more matches

XForms Custom Controls - Archive of obsolete content
custom data types - existing xforms controls are not able to work properly with your data type advanced xforms controls - you need your controls to be able to do more things than traditional xforms controls can do new host language - you'd like to support xforms in host languages other than xhtml or xul custom presentation the mozilla xforms extension cannot anticipate all of the possible use cases that will evolve in web applications and web pages as xforms matures and the user base grows.
...for example, in the mozilla xforms extension we will render a combobox widget when appearance='minimal' on a select1 control.
...as always, please refer directly to the source code to be sure that you are using the latest, up-to-date version: extensions/xforms/nsixformsuiwidget.idl.
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Troubleshooting XForms Forms - Archive of obsolete content
always do this first make sure that you are running the latest release of the extension.
...you either have to use css tables or repeat attributes, which at the moment are not working properly in the firefox xforms extension :( should be fixed by bug 306247 and bug 280368 respectively.
...if you are developing on your local machine using apache tomcat for example then add the following regular expression on a new line: ^http://localhost:8080/.* use the xforms buddy to view instance data the xforms buddy extension allows you to dynamically view model instance data while the xforms is running in the firefox browser.
...And 2 more matches

XForms - Archive of obsolete content
xforms support can be added to firefox and seamonkey by installing the mozilla xforms extension.
... this extension, while supporting a significant subset of the xforms 1.0 and 1.1 candidate recommendations, is not actively maintained any more since about 2010.
... for more details about the future of the mozilla xforms extension see this blog post.
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Mozilla's DOCTYPE sniffing - Archive of obsolete content
the public identifier "-//softquad software//dtd hotmetal pro 6.0::19990601::extensions to html 4.0//en".
... the public identifier "-//softquad//dtd hotmetal pro 4.0::19971010::extensions to html 4.0//en".
... the public identifier "-//as//dtd html 3.0 aswedit + extensions//en".
...And 2 more matches

XUL Booster - Archive of obsolete content
xul booster is a third party eclipse / webtools build that offers some support for xul editing and awesome support for extension packaging.
... extension quick start xul booster makes creating and packaging an extension very easy.
...create an extension you'll need an extension id; see generating guids.
...And 2 more matches

Command line options
add-ons gecko 1.9.2 note -install-global-extension and -install-global-theme have been removed from gecko 1.9.2 and upwards.
... -install-global-extension /path/to/extension installs the extension into the application directory.
... the parameter is the path to the extension.
...And 2 more matches

Configuring Build Options
choose one of the following options to add to your mozconfig file: browser (firefox) ac_add_options --enable-application=browser note: this is the default mail (thunderbird) ac_add_options --enable-application=comm/mail mozilla suite (seamonkey) ac_add_options --enable-application=suite calendar (lightning extension, uses thunderbird) ac_add_options --enable-application=comm/mail ac_add_options --enable-calendar selecting build options the build options you choose depends on what application you are building and what you will be using the build for.
... extensions ac_add_options --enable-extensions=default|all|ext1,ext2,-skipext3 there are many optional pieces of code that live in extensions/.
... many of these extensions are now considered an integral part of the browsing experience.
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Creating Custom Events That Can Pass Data
(see bug 427537) requirements in order to do this you must be able to do all of the following: download mozilla source code build mozilla creating custom firefox extensions with the mozilla build system.
... example tbp note for extension developers in order for your event to work the way it is described here it must be derived from nsdomevent.
... the problem that extension developers will hit is that you are not allowed derive from nsdomevent in an extension.
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AddonManager
the existing add-on types are defined in xpiprovider.jsm and are, at this time, the following: extension, theme, locale, multipackage, dictionary and experiment.
... to import the addonmanager object in the add-on sdk, use: const { addonmanager } = require("resource://gre/modules/addonmanager.jsm"); to import it in a normal bootstrapped extension or similar, use: cu.import("resource://gre/modules/addonmanager.jsm"); method overview promise?
...corresponds to the extensions.autoupdatedefault preference.
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Using JavaScript code modules
if you're writing an extension for firefox 4 and already have a chrome.manifest with a content instruction in it, you can put the code module in your content folder and reference it like your other content files via chrome://<yourextension>/content/<yourmodule>.jsm.
... if your extension or application needs to support mozilla 1.9.x (firefox 3.x), you should register a new resource url.
...code modules are simple javascript files with a .js or .jsm extension.
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NSS 3.12.6 release notes
new in nss 3.12.6 ssl3 & tls renegotiation indication extension (rfc 5746) by default, nss 3.12.6 uses the new tls renegotiation indication extension for tls renegotiation but allows simple ssl/tls connections (without renegotiation) with peers that don't support the tls renegotiation indication extension.
... [2|r|r]: ssl_renegotiate_requires_xtn (default) only allows renegotiation if the peer's hello bears the tls renegotiation_info extension.
...the status_request extension).
...And 2 more matches

NSS 3.15 release notes
certutil has been updated to support creating name constraints extensions.
... new functions in ssl.h ssl_peerstapledocspresponse - returns the server's stapled ocsp response, when used with a tls client socket that negotiated the status_request extension.
... ssl_setstapledocspresponses - set's a stapled ocsp response for a tls server socket to return when clients send the status_request extension.
...And 2 more matches

NSS 3.35 release notes
note: the value of ssl_tls13_key_share_xtn value, from the sslextensiontype, has been renumbered to match changes in tls 1.3.
... users of tls are now able to provide implementations of tls extensions, through an experimental custom extension api.
... see the documentation in sslexp.h for ssl_installextensionhooks for more information on this feature.
...And 2 more matches

Using the Places annotation service
it is usable from trusted firefox code such as extensions, but not from web pages.
...for example, "my_extension/page_state".
... var ioservice = components.classes["@mozilla.org/network/io-service;1"] .getservice(components.interfaces.nsiioservice); var uri = ioservice.newuri("http://www.mozilla.org/", null, null); annotationservice.setpageannotation(uri, "my_extension/some_annotation", "this is the annotation value", 0, 0); retrieving annotations there are corresponding getters for the setters above (see nsiannotationservice.idl for the exact declarations): from c++: getpageannotationstring(auri, aname); getpageannotationint32(auri, aname); getpageannotationint64(auri, aname); getpageannotationdouble(auri, aname); getpageannotationbinary(auri, ana...
...And 2 more matches

Packaging WebLock
note: the emphasis of this tutorial is on the component development itself, so this section on packaging and installing extensions to gecko is necessarily brief.
...using xpinstall, you can create web-based installations for gecko-based applications, mozilla extensions, or individual components.
... like the windows registry, the chrome registry is a database of information about applications, skins, and other extensions that have been installed in a gecko application.
...And 2 more matches

nsIInstallLocation
toolkit/mozapps/extensions/public/nsiextensionmanager.idlscriptable interface representing a location where extensions, themes and so on are installed.
...you can get the install location of a particular add-on using nsiextensionmanager interface: var il = components.classes["@mozilla.org/extensions/manager;1"] .getservice(components.interfaces.nsiextensionmanager) .getinstalllocation("add-on id") method overview astring getidforlocation(in nsifile file); nsifile getitemfile(in astring id, in astring path); nsifile getitemlocation(in astring id); nsifile getstagefile(in astr...
...path the path to the file beneath an extension's directory.
...And 2 more matches

Storage
it is available to trusted callers, meaning extensions and firefox components only.
... note: storage is not the same as the dom:storage feature which can be used by web pages to store persistent data or the session store api (an xpcom storage utility for use by extensions).
...this extension is treated specially by windows as a known extension for an 'application compatibility database' and changes are backed up by the system automatically as part of system restore functionality.
...And 2 more matches

Debugger.Object - Firefox Developer Tools
for example, in firefox, code in privileged compartments sees content dom element objects without redefinitions or extensions made to that object's properties by content code.
...(this function behaves like the standard object.freeze function, except that the object to be sealed is implicit and in a different compartment from the caller.) preventextensions() prevent properties from being added to the referent.
... (this function behaves like the standard object.preventextensions function, except that the object to operate on is implicit and in a different compartment from the caller.) issealed() return true if the referent is sealed—that is, if it is not extensible, and all its properties have been marked as non-configurable.
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AuthenticatorAssertionResponse.authenticatorData - Web APIs
the authenticatordata property of the authenticatorassertionresponse interface returns an arraybuffer containing information from the authenticator such as the relying party id hash (rpidhash), a signature counter, test of user presence, user verification flags, and any extensions processed by the authenticator.
... bit 7, extension data (ed) - if set, extension data is present.
... extension data will follow attestedcredentialdata if it is present, or will immediatelly follow the first 37 bytes of the authenticatordata if no attestedcredentialdata is present.
...And 2 more matches

EXT_texture_compression_bptc - Web APIs
the ext_texture_compression_bptc extension is part of the webgl api and exposes 4 bptc compressed texture formats.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

EXT_texture_compression_rgtc - Web APIs
the ext_texture_compression_rgtc extension is part of the webgl api and exposes 4 rgtc compressed texture formats.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

EXT_texture_filter_anisotropic - Web APIs
the ext_texture_filter_anisotropic extension is part of the webgl api and exposes two constants for anisotropic filtering (af).
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

Media Source API - Web APIs
the media source api, formally known as media source extensions (mse), provides functionality enabling plugin-free web-based streaming media.
... media source extensions concepts and usage playing video and audio has been available in web applications without plugins for a few years now, but the basic features offered have really only been useful for playing single whole tracks.
... the mse standard with media source extensions (mse), this is changing.
...And 2 more matches

OES_fbo_render_mipmap - Web APIs
the oes_fbo_render_mipmap extension is part of the webgl api and makes it possible to attach any level of a texture to a framebuffer object.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

WEBGL_compressed_texture_atc - Web APIs
the webgl_compressed_texture_atc extension is part of the webgl api and exposes 3 atc compressed texture formats.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

WEBGL_compressed_texture_etc - Web APIs
the webgl_compressed_texture_etc extension is part of the webgl api and exposes 10 etc/eac compressed texture formats.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

WEBGL_compressed_texture_etc1 - Web APIs
the webgl_compressed_texture_etc1 extension is part of the webgl api and exposes the etc1 compressed texture format.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

WEBGL_compressed_texture_s3tc - Web APIs
the webgl_compressed_texture_s3tc extension is part of the webgl api and exposes four s3tc compressed texture formats.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

WEBGL_compressed_texture_s3tc_srgb - Web APIs
the webgl_compressed_texture_s3tc_srgb extension is part of the webgl api and exposes four s3tc compressed texture formats for the srgb colorspace.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

WEBGL_lose_context - Web APIs
the webgl_lose_context extension is part of the webgl api and exposes functions to simulate losing and restoring a webglrenderingcontext.
... webgl extensions are available using the webglrenderingcontext.getextension() method.
... for more information, see also using extensions in the webgl tutorial.
...And 2 more matches

Starting up and shutting down a WebXR session - Web APIs
webxr api emulator extension the mozilla webxr team has created a webxr api emulator browser extension, compatible with both firefox and chrome, which emulates the webxr api, simulating a variety of compatible devices such as the htc vive, the oculus go and oculus quest, samsung gear, and google cardboard.
... with the extension in place, you can open up a developer tools panel that lets you control the position and orientation of the headset and any hand controllers, as well as button presses on the controllers.
... getting the extension download the webxr api emulator for your supported browser below: google chrome mozilla firefox the source code for the extension is also available on github.
...And 2 more matches

JavaScript modules - JavaScript
aside — .mjs versus .js throughout this article, we've used .js extensions for our module files, but in other resources you may see the .mjs extension used instead.
... note: in some module systems, you can omit the file extension and the dot (e.g.
... because .mjs is a non-standard file extension, some operating systems might not recognise it, or try to replace it with something else.
...And 2 more matches

Unicode property escapes - JavaScript
// non-binary values \p{unicodepropertyvalue} \p{unicodepropertyname=unicodepropertyvalue} // binary and non-binary values \p{unicodebinarypropertyname} // negation: \p is negated \p \p{unicodepropertyvalue} \p{unicodebinarypropertyname} general_category (gc) script (sc) script_extensions (scx) see also propertyvaluealiases.txt unicodebinarypropertyname the name of a binary property.
... to."; // most explicit form story.match(/\p{general_category=letter}/gu); // it is not mandatory to use the property name for general categories story.match(/\p{letter}/gu); // this is equivalent (short alias): story.match(/\p{l}/gu); // this is also equivalent (conjunction of all the subcategories using short aliases) story.match(/\p{lu}|\p{ll}|\p{lt}|\p{lm}|\p{lo}/gu); scripts and script extensions some languages use different scripts for their writing system.
...the script and script_extensions unicode properties allow regular expression to match characters according to the script they are mainly used with (script) or according to the set of scripts they belong to (script_extensions).
...And 2 more matches

TypeError: can't define property "x": "obj" is not extensible - JavaScript
the javascript exception "can't define property "x": "obj" is not extensible" occurs when object.preventextensions() marked an object as no longer extensible, so that it will never have properties beyond the ones it had at the time it was marked as non-extensible.
...however, in this case object.preventextensions() marked an object as no longer extensible, so that it will never have properties beyond the ones it had at the time it was marked as non-extensible.
... 'use strict'; var obj = {}; object.preventextensions(obj); obj.x = 'foo'; // typeerror: can't define property "x": "obj" is not extensible in both, strict mode and sloppy mode, a call to object.defineproperty() throws when adding a new property to a non-extensible object.
...And 2 more matches

Intl.Collator() constructor - JavaScript
the following unicode extension keys are allowed: co variant collations for certain locales.
...this option can be set through an options property or through a unicode extension key; if both are provided, the options property takes precedence.
...this option can be set through an options property or through a unicode extension key; if both are provided, the options property takes precedence.
...And 2 more matches

Intl.Locale.prototype.calendar - JavaScript
islamicc civil (algorithmic) arabic calendar examples adding a calendar in the locale string calendar eras fall under the category of locale key "extension keys".
... these keys add additional data about the locale, and are added to locale identifiers by using the -u extension.
...to add the calendar type, first add the -u extension to the string.
...And 2 more matches

Intl.Locale.prototype.caseFirst - JavaScript
kf is treated as a locale string "extension subtag".
... these subtags add additional data about the locale, and are added to locale identifiers by using the -u extension key.
...to add the casefirst value, first add the -u extension key to the string.
...And 2 more matches

Intl.Locale.prototype.collation - JavaScript
adding a collation type via the locale string in the unicode locale string spec, collation types are locale key "extension subtags".
... these subtags add additional data about the locale, and are added to locale identifiers by using the -u extension.
...to add the collation type, first add the -u extension to the string.
...And 2 more matches

Intl.Locale.prototype.numeric - JavaScript
kn is considered a locale string "extension subtag".
... these subtags add additional data about the locale, and are added to locale identifiers by using the -u extension key.
...to set the numeric value, first add the -u extension key to the string.
...And 2 more matches

Intl.Locale - JavaScript
the locale identifier consists of a language identifier and extension tags.
...additional information about the locale is stored in the optional extension tags.
... extension tags hold information about locale aspects such as calendar type, clock type, and numbering system type.
...And 2 more matches

Miscellaneous - Archive of obsolete content
var osstring = services.appinfo.os; detecting the host application and version // get the name of the application running us services.appinfo.name; // returns "firefox" for firefox services.appinfo.version; // returns "2.0.0.1" for firefox version 2.0.0.1 retrieving the version of an extension as specified in the extension's install.rdf components.utils.import("resource://gre/modules/addonmanager.jsm"); addonmanager.getaddonbyid("extension-guid@example.org", function(addon) { // this is an asynchronous callback function that might not be called immediately alert("my extension's version is " + addon.version); }); restarting firefox/thunderbird/seamonkey_2.0 for firefox 3 see on...
... using string bundles from javascript assuming the extension has myext.properties with name/value pairs such as: invalid.url=the speficied url, %s, is invalid.
...for firefox, you could use the client customization kit (cck) to create an extension that does exactly that.
...}); example@addon is extension id.

Toolbar - Archive of obsolete content
adding a toolbar button there are two tutorials available: an elaborate step by step tutorial for beginners: custom toolbar button a tutorial describing the steps needed to add a toolbar button assuming you already have a working extension and know the basics of extension development: creating toolbar buttons adding button by default when you create and deploy your extension and include a toolbar button for it by overlaying the customize toolbarpalette, it is not available by default.
... notes insert your button by default only once, at first run, or when an extension update adds a new button.
... please only add your button by default if it adds real value to the user and will be a frequent entry point to your extension.
... if (elem && elem.parentnode == toolbar) before = elem.nextelementsibling; } toolbar.insertitem(id, before); toolbar.setattribute("currentset", toolbar.currentset); document.persist(toolbar.id, "currentset"); if (toolbarid == "addon-bar") toolbar.collapsed = false; } } if (firstrun) { installbutton("nav-bar", "my-extension-navbar-button"); // the "addon-bar" is available since firefox 4 installbutton("addon-bar", "my-extension-addon-bar-button"); } ...

Appendix B: Install and Uninstall Scripts - Archive of obsolete content
so, if we were to use fuel, we can do the following in the init function: init : function() { let firstrunpref = "extensions.xulschoolhello.firstrundone"; if (!application.prefs.getvalue(firstrunpref, false)) { application.prefs.setvalue(firstrunpref, true); // all the rest of the first run code goes here.
...in the case of bootstrapped extensions, both steps happen at the same time.
... in the case of "traditional" extensions, like those explained in the tutorial, both steps happen at different times.
... in this case the user is told that firefox needs to restart in order for the extension to be completely removed.

Custom XUL Elements with XBL - Archive of obsolete content
we'll look into xbl using a modified version of the hello world extension.
...as for the css file, it's usually good to have a single file declaring all bindings in your extension.
...you can enrich the ui of a firefox window by extending and replacing elements, which is what the console² extension does in order to improve the error console window.
...it's very easy to break the ui of the application or other extensions if you do this the wrong way, so be very careful about it.

Promises - Archive of obsolete content
ons", "getaddonsbyids", "getaddonsbytypes", "getaddonswithoperationsbytypes"]) aom._replacemethod(method, addons => addons.map(aom.addon)); aom._replacemethod("getinstallsbytypes", installs => installs); components.utils.import("resource://gre/modules/addonmanager.jsm", aom); example usage: task.spawn(function* () { // get an extension instance, and its data directory.
... let addon = yield aom.getaddonbyid(addon_id); let path = yield addon.getdatadirectory(); writer.writedatato(path); // disable all extensions.
... for (let extension of yield aom.getaddonsbytypes(["extension"])) extension.userdisabled = true; }); json file storage this helper simplifies the use of json data storage files with asynchronous io.
... */ jsonstore.prototype.save = function () { return this.saver.savechanges(); }; example usage: var addon_id = "extension@example.com"; var config_default = { "foo": "bar", }; new jsonstore("config", config_default).then(store => { console.log(store.data); store.data.baz = "quux"; store.save(); }) the following changes will remove the dependency on aom wrappers: let addon = yield new promise(accept => addonmanager.getaddonbyid(addon_id, accept)); let dir = yield new ...

Making it into a dynamic overlay and packaging it up for distribution - Archive of obsolete content
see building an extension for updated instructions.
... now that we have a static overlay we're in good shape to create a xpi package that installs our extension as a dynamic overlay.
... in the content sub-subdirectory: <?xml version="1.0"?> <rdf:rdf xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:chrome="http://www.mozilla.org/rdf/chrome#"> <rdf:seq about="urn:mozilla:package:root"> <rdf:li resource="urn:mozilla:package:tinderstatus"/> </rdf:seq> <rdf:description about="urn:mozilla:package:tinderstatus" chrome:displayname="mozilla tinderstatus extension" chrome:author="myk melez" chrome:name="tinderstatus" chrome:extension="true" chrome:description="displays tinderbox status for the mozilla codebase."> </rdf:description> <rdf:seq about="urn:mozilla:overlays"> <rdf:li resource="chrome://navigator/content/navigator.xul"/> </rdf:seq> <rdf:seq about="chrome://navigator/content/navigator.xul"> <rdf:li>chrome://tinderstat...
...us/content/tinderstatusoverlay.xul</rdf:li> </rdf:seq> </rdf:rdf> install.js, on the other hand, goes into the tinderstatus-installer directory: initinstall( "mozilla tinderstatus extension", "/mozdev/tinderstatus", "0.1"); var installdir = getfolder("chrome","tinderstatus"); setpackagefolder(installdir); adddirectory("tinderstatus"); registerchrome( content | delayed_chrome, getfolder(installdir, "content")); var result = performinstall(); if ( result != success ) cancelinstall(result); once all the files are in place, use your zip utility from within the tinderstatus-installer directory to create a zip archive called tinderstatus.xpi with install.js and the entire contents of the tinderstatus/ directory.

Error Console - Archive of obsolete content
see setting up extension development environment#development preferences for the preferences you should set if you want to see errors from firefox and extensions in the error console.
... extensions can write to the error console from javascript using components.utils.reporterror, or if you're fine with logging to the os-provided console, dump().
... alternatives console2 this extension provides a replacement for error console, fixing many of its bugs and implementing long-wanted enhancement requests.
... firebug the extension for firefox also integrates the error console with various improvements.

Prism - Archive of obsolete content
it should be possible for developers to include prism-style extension directly in their web app.
...we intend to propose these extensions for inclusion in future versions of xulrunner.
... firefox extension: a firefox extension, code-named "refractor", can be used to spin out new prism apps from inside the web browser.
...bundles can be installed locally, or directly from a website using the prism for firefox extension.

Hacking wiki - Archive of obsolete content
mdc customizations the mdc wiki uses a few mediawiki extensions.
... you can enable them by adding include("extensions/exampleext.php"); to the end of your <tt>localsettings.php</tt>.
... for example: [snip] include("extensions/breadcrumbs.php"); include("extensions/titleoverride.php"); include("extensions/abbr.php"); include("extensions/object.php"); include("extensions/kbd.php"); ?> tbd installing/configuring rss and doxygen extensions - anything special needs to be done?
... the title-override / breadcrumbs extensions need an additional table created.

XPInstall - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.
...ding="utf-8"?> <rdf xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#"> <description about="urn:mozilla:install-manifest"> <!-- properties --> </description> </rdf> cross-platform install (xpinstall) is a technology used by mozilla application suite, mozilla firefox, mozilla thunderbird and other xul-based applications for installing extensions.
... mailing list newsgroup rss feed tools xpinstall trigger page related topics extensions, xul, xpi ...

Creating an Installer - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.
... the jar file installers typically have the extension .xpi (pronounced zippy) to distinguish them from other archives.
... function donefn ( name , result ){ if (result) alert("an error occured: " + result); } var xpi = new object(); xpi["find files"] = "findfile.xpi"; installtrigger.install(xpi,donefn); the xpi archive note: if you want to create a new xulrunner application, extension, or theme, see bundles.

Using Visual Studio as your XUL IDE - Archive of obsolete content
> text editor > file extension and add the extension "xul" with "xml editor".
...visual assist and file extensions since version 10.5, visual assist supports javascript and xml.
... as it does not work out of the box with unknown file extensions (like .xul, .xbl and .jsm), you have to do some registry tricks, so that va knows how to treat these file types.
... all va options can be found at: hkey_current_user\software\whole tomato\visual assist x\ find the folder that represents your visual studio version ((vanet8, vanet9, etc.) and add your extensions to the corresponding registry entries extjs and extxml.

Frame script loading and lifetime
chrome: urls extension developers usually use a chrome:// url to refer to the frame scripts.
... to define the mapping between a chrome:// url and a frame script packaged with an extension, use a "chrome.manifest" file to register a chrome url: // chrome.manifest content my-e10s-extension chrome/content/ // chrome script mm.loadframescript("chrome://my-e10s-extension/content/content.js", true); allowdelayedload if the message manager is a global frame message manager or a window message manager then: if allowdelayedload is true, the frame script will be loaded into any new frame, which has opened after the loadframescript() call.
... for example: var mm = window.messagemanager; mm.loadframescript("chrome://my-e10s-extension/content/frame-script.js", true); the script will be loaded into all tabs currently open in this window, and all new tabs opened afterwards.
... if you use allowdelayedload, you can cancel it by using removedelayedframescript: var mm = window.messagemanager; mm.removedelayedframescript("chrome://my-e10s-extension/content/frame-script.js"); this means we will stop loading the script into new tabs.

NSS 3.15.5 release notes
nss 3.15.5 source distributions are also available on ftp.mozilla.org for secure https download: source tarballs: https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/nss_3_15_5_rtm/src/ new in nss 3.15.5 new functionality added support for the tls application layer protocol negotiation (alpn) extension.
... added the tls padding extension.
... the extension type value is 35655, which may change when an official extension type value is assigned by iana.
... nss automatically adds the padding extension to clienthello when necessary.

Enc Dec MAC Using Key Wrap CertReq PKCS10 CSR
char *outfilename, seckeyprivatekey **selfsignprivkey, void *pwarg, secoidtag hashalgtag, unsigned int serialnumber, int warpmonths, int validitymonths, const char *dnsnames, prbool ascii, prbool selfsign) { void *exthandle; secitem reqder; certcertextension **crexts; secstatus rv = secsuccess; certcertificate *subjectcert = null; certcertificaterequest *certreq = null; prfiledesc *outfile = null; secitem *certder = null; reqder.data = null; outfile = pr_open(outfilename, pr_rdwr | pr_create_file | pr...
... certreq = getcertrequest(infilename, ascii); if (certreq == null) { rv = secfailure; goto cleanup; } subjectcert = makev1cert(handle, certreq, issuernickname, selfsign, serialnumber, warpmonths, validitymonths); if (subjectcert == null) { rv = secfailure; goto cleanup; } exthandle = cert_startcertextensions (subjectcert); if (exthandle == null) { rv = secfailure; goto cleanup; } if (certreq->attributes != null && certreq->attributes[0] != null && certreq->attributes[0]->attrtype.data != null && certreq->attributes[0]->attrtype.len > 0 && secoid_findoidtag(&certreq->attributes[0]->attrtype) == sec_oid_pkcs9_ex...
...tension_request) { rv = cert_getcertificaterequestextensions(certreq, &crexts); if (rv != secsuccess) { pr_fprintf(pr_stderr, "%s\n", port_errortostring(rv)); goto cleanup; } rv = cert_mergeextensions(exthandle, crexts); if (rv != secsuccess) { pr_fprintf(pr_stderr, "%s\n", port_errortostring(rv)); goto cleanup; } } cert_finishextensions(exthandle); /* self-signing a cert request, find the private key */ if (*selfsignprivkey == null) { *selfsignprivkey = pk11_findkeybydercert(slot, subjectcert, pwarg); if (!*selfsignprivkey) { pr_fprintf(pr_stderr, "failed to locate private key.\n"); rv = secfailure; goto cleanup; ...
...oto cleanup; } arena = port_newarena(der_default_chunksize); if (!arena) { fprintf(stderr, "out of memory"); rv = secfailure; goto cleanup; } exthandle = cert_startcertificaterequestattributes(cr); if (exthandle == null) { port_freearena (arena, pr_false); rv = secfailure; goto cleanup; } cert_finishextensions(exthandle); cert_finishcertificaterequestattributes(cr); /* der encode the request */ encoding = sec_asn1encodeitem(arena, null, cr, sec_asn1_get(cert_certificaterequesttemplate)); if (encoding == null) { pr_fprintf(pr_stderr, "der encoding of request failed\n"); rv = secfailure; goto cleanup; } /* ...

sample2
rv; } /* * create a certificate */ static secstatus createcert( certcertdbhandle *handle, pk11slotinfo *slot, char * issuernickname, char *infilename, char *outfilename, seckeyprivatekey **selfsignprivkey, void *pwarg, secoidtag hashalgtag, unsigned int serialnumber, int warpmonths, int validitymonths, const char *dnsnames, prbool ascii, prbool selfsign) { void *exthandle; secitem reqder; certcertextension **crexts; secstatus rv = secsuccess; certcertificate *subjectcert = null; certcertificaterequest *certreq = null; prfiledesc *outfile = null; secitem *certder = null; reqder.data = null; outfile = pr_open(outfilename, pr_rdwr | pr_create_file | pr_truncate, 00660); /* create a cert request object from the input cert request der */ certreq = getcertrequest(infilename, ascii); if (certreq == null) ...
...{ rv = secfailure; goto cleanup; } subjectcert = makev1cert(handle, certreq, issuernickname, selfsign, serialnumber, warpmonths, validitymonths); if (subjectcert == null) { rv = secfailure; goto cleanup; } exthandle = cert_startcertextensions (subjectcert); if (exthandle == null) { rv = secfailure; goto cleanup; } if (certreq->attributes != null && certreq->attributes[0] != null && certreq->attributes[0]->attrtype.data != null && certreq->attributes[0]->attrtype.len > 0 && secoid_findoidtag(&certreq->attributes[0]->attrtype) == sec_oid_pkcs9_extension_request) { rv = cert_getcertificaterequestextensions(certreq, &crexts); if (rv != secsuccess) { pr_fprintf(pr_stderr, "%s\n", port_errortostring(rv)); goto cleanup; } rv = cert_mergeextensions(exthandle, crexts); if (rv != secsuccess) { pr_fprintf(pr_...
...stderr, "%s\n", port_errortostring(rv)); goto cleanup; } } cert_finishextensions(exthandle); /* self-signing a cert request, find the private key */ if (*selfsignprivkey == null) { *selfsignprivkey = pk11_findkeybydercert(slot, subjectcert, pwarg); if (!*selfsignprivkey) { pr_fprintf(pr_stderr, "failed to locate private key.\n"); rv = secfailure; goto cleanup; } } certder = signcert(handle, subjectcert, selfsign, hashalgtag, *selfsignprivkey, issuernickname,pwarg); if (certder) { if (ascii) { pr_fprintf(outfile, "%s\n%s\n%s\n", ns_cert_header, btoa_datatoascii(certder->data, certder->len), ns_cert_trailer); } else { pr_write(outfile, certder->data, certder->len); } } if (rv != secsuccess) { prerrorcode perr = pr_geterror(); pr_fprintf(pr_stderr, "unable to create cert %s\n", perr); } cleanup: if (o...
...null); if (!cr) { pr_fprintf(pr_stderr, "unable to make certificate request\n"); rv = secfailure; goto cleanup; } arena = port_newarena(der_default_chunksize); if (!arena) { fprintf(stderr, "out of memory"); rv = secfailure; goto cleanup; } exthandle = cert_startcertificaterequestattributes(cr); if (exthandle == null) { port_freearena (arena, pr_false); rv = secfailure; goto cleanup; } cert_finishextensions(exthandle); cert_finishcertificaterequestattributes(cr); /* der encode the request */ encoding = sec_asn1encodeitem(arena, null, cr, sec_asn1_get(cert_certificaterequesttemplate)); if (encoding == null) { pr_fprintf(pr_stderr, "der encoding of request failed\n"); rv = secfailure; goto cleanup; } /* sign the request */ signalgtag = sec_getsignaturealgorithmoidtag(keytype, hashalgtag); if (signalg...

Index
426 js_preventextensions jsapi reference, spidermonkey all javascript objects recognize the concept of extensibility: whether new properties may be added to the object.
... in javascript this may be accomplished using the object.preventextensions method.
... the similar jsapi method is js_preventextensions.
...in addition to the interpreter, spidermonkey contains a just-in-time (jit) compiler, a garbage collector, code implementing the basic behavior of javascript values, a standard library implementing ecma 262-5.1 §15 with various extensions, and a few public apis.

Places Developer Guide
this document is for extension and application developers who want to use the bookmarks and history apis in firefox 3.
...elopers can take advantage of several helper apis that are browser-specific: fuel - a collection of wrapper apis for easing access to a number of firefox utilities and services nsiplacestransactionsservice - a firefox service for modifying bookmarks in a transactional manner, providing facilities for undo/redo places utilities for javascript - accessors and helper functions for firefox and extensions creating bookmarks, folders and other items creating a bookmark // create an nsiuri for the url to be bookmarked.
...this is mainly for use by extensions that sync bookmark data between different profiles.
...this is mainly for use by extensions that sync bookmark data between different profiles.

Generating GUIDs
guids are used in mozilla programming for identifying several types of entities, including xpcom interfaces (this type of guids is callled iid), components (cid), and legacy add-ons—like extensions and themes—that were created prior to firefox 1.5.
... add-ons can (and should) be identified with ids of the form extensionname@organization.tld since firefox 1.5.
...using the extensionname@organization.tld form is approximately one thousand times easier for everyone involved.
...if all else fails, using extensionname@yourusername.addons.mozilla.org should be fine; no one will care.

nsIFeedResult
1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) method overview void registerextensionprefix(in astring anamespace, in astring aprefix); attributes attribute type description bozo boolean the feed processor sets the bozo bit when a feed triggers a fatal error during xml parsing.
...this value will be one of the following: atom, rss2, rss09, rss091, rss091userland, rss092, rss1, atom03, atomentry, rssitem methods registerextensionprefix() registers a prefix for a namespace used to access an extension in the feed or entry.
... void registerextensionprefix( in astring anamespace, in astring aprefix ); parameters anamespace the namespace for the extension.
... aprefix the prefix used to access the extension.

nsIUpdateItem
toolkit/mozapps/extensions/public/nsiextensionmanager.idlscriptable describes an item managed by the extension system, providing metadata describing the item.
... 1.0 66 introduced gecko 1.8 obsolete gecko 2.0 inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) this interface is obsolete; instead of using the extension manager, you should use the addon manager.
...internal code uses other constants in nsextensionmanager.js.in.
... constant gecko version description 1.8 1.8.1 1.9 1.9.1 1.9.2 type_app 0x01 type_extension 0x02 type_theme 0x04 type_locale 0x08 type_multi_xpi 0x20 type_addon type_extension + type_theme + type_locale + type_plugin type_extension + type_theme + type_locale type_any type_app + type_addon 0xff type_plugin 0x10 methods init() initializes the object.

XUL Overlays
when plug-ins, browser extensions, or other applications provide new ui elements to the browser, these elements should be defined in overlay files.
...if you are developing a mozilla extension, note that the id namespace is shared by all the extensions.
... so, in order to avoid unpredicted behaviors you will probably benefit from using a unique prefix for the ids of the xul elements of your extension.
... for instance, you can use the name of your extension, or an abbreviation of it.

Adding items to the Folder Pane
listening for folder pane rebuilds every time the folder pane rebuilds, it fires a "maprebuild" event, which is the ideal opportunity for extensions to step in and modify the display data.
...n the tree to display the item at open (rw, attribute) whether or not this container is open children (attribute) an array of child items also conforming to this spec getproperties (function) a call from getrowproperties or getcellproperties for this item will be passed into this function command (function) this function will be called when the item is double-clicked for our example extension, two different types of folder-tree-items will be defined.
...unfortunately, this rebuild will occur before an extension's "load" event fires.
... thus, extensions may need to do manual insertions when this load event fires, if they want to add items to the initial display.

customDBHeaders Preference
in addition to the preference outlined in setting up extension development environment, you'll want to add the following preferences: // this allows you to add extra headers while composing messages user_pref("mail.compose.other.header", "x-superfluous,x-other,x-whatever"); // this enables the preservation of custom headers as incoming mail is processed user_pref( "mailnews.customdbheaders", "x-superfluous,x-other"); important: please pay careful attentio...
... building the extension for this extension, i used a directory tree exactly like this: superfluous/ chrome.manifest install.rdf makefile chrome/ content/ superfluous.js superfluous_overlay.xul here's the makefile: deps:= chrome/ \ chrome.manifest \ chrome/content/ \ ...
....xul chrome://superfluous/content/superfluous_overlay.xul install.rdf: <?xml version='1.0' encoding='utf-8'?> <rdf xmlns='http://www.w3.org/1999/02/22-rdf-syntax-ns#' xmlns:em='http://www.mozilla.org/2004/em-rdf#'> <description about='urn:mozilla:install-manifest'> <em:id>superfluous@yoursite.com</em:id> <em:version>0.1.1</em:version> <em:type>2</em:type> <!-- 2 is type 'extension' --> <em:targetapplication> <description> <!-- this next line identifies tbird as target --> <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id> <em:minversion>2*</em:minversion> <em:maxversion>3.0.0.*</em:maxversion> </description> </em:targetapplication> <em:name>superfluous</em:name> <em:description>test superfluou...
...s extension</em:description> <em:creator>garrett comeaux</em:creator> </description> </rdf> build process: [gcomeaux@kyle tbird-ext]$ cd superfluous/ [gcomeaux@kyle superfluous]$ make zip superfluous.xpi chrome/ chrome.manifest chrome/content/ chrome/content/superfluous.js chrome/content/superfluous_overlay.xul install.rdf adding: chrome/ (stored 0%) adding: chrome.manifest (deflated 44%) adding: chrome/content/ (stored 0%) adding: chrome/content/superfluous.js (deflated 57%) adding: chrome/content/superfluous_overlay.xul (deflated 44%) adding: install.rdf (deflated 50%) end result ultimately, you want to be able to compose a message like this: and see the superfluous column displayed in your inbox like this: thanks many thanks go out to the thunderbird developers fo...

Deprecated tools - Firefox Developer Tools
although these panels have been removed, you still have access to the old code, and there are alternative webextensions that you can try to get similar functionality.
... alternatives spector.js is a webextension that can provide these features with 3d contexts.
... more details about the web audio editor alternatives alternatives include audion and https://github.com/spite/webaudioextension web extensions.
... more details about the shader editor alternatives an alternative to this panel is this extension: https://github.com/spite/shadereditorextension, or spector.js also supports a shader editor that requires a library to use a shader reloader hook.

Index - Firefox Developer Tools
6 dom inspector dom, dom:tools, dom_inspector, extensions, extensions:tools, themes, themes:tools, tools, web development, web development:tools, xul, xul:tools the dom inspector (also known as domi) is a developer tool used to inspect, browse, and edit the document object model of documents - usually web pages or xul windows.
... 9 introduction to dom inspector dom_inspector the dom inspector is a mozilla extension that you can access from the tools > web development menu in seamonkey, or by selecting the dom inspector menu item from the tools menu in firefox and thunderbird, or by using ctrl/cmd+shift+i in either application.
...the cookies table has the following columns: 108 extension storage dev tools, extension storage, firefox, guide, storage, storage inspector, tools, l10n:priority this storage type is only shown when debugging extensions.
... when selecting an extension id in the storage tree of the storage inspector, a table lists the details of all the extension storage present for the extension.

Document - Web APIs
extensions for htmldocument the document interface for html documents inherits from the htmldocument interface or, since html5, is extended for such documents.
... extension for html documents the document interface for html documents inherit from the htmldocument interface or, since html5, is extended for such documents: document.clear() in majority of modern browsers, including recent versions of firefox and internet explorer, this method does nothing.
... non-standard extensions firefox notes mozilla defines a set of non-standard properties made only for xul content: document.currentscript returns the <script> element that is currently executing.
... living standard turn the htmldocument interface into a document extension.

Gamepad API - Web APIs
experimental gamepad extensions gamepadhapticactuator represents hardware in the controller designed to provide haptic feedback to the user (if available), most commonly vibration hardware.
... see also the extensions to the gamepad interface, for features that allow you to access the above information.
... extensions to other interfaces navigator navigator.getgamepads() an extension to the navigator object that returns an array of gamepad objects, one for each connected gamepad.
... tutorials and guides using the gamepad api implementing controls using the gamepad api specifications specification status comment gamepad extensions editor's draft defines the experimental gamepad extensions.

Performance Timeline - Web APIs
the performance timeline api defines extensions to the performance interface to support client-side latency measurements within applications.
... the extensions provide interfaces to retrieve performance entry metrics based on specific filter criteria.
... performance extensions the performance timeline api extends the performance interface with three methods that provide different mechanisms to get a set of performance records (metrics), depending on the specified filter criteria.
... performance interface extensions: as shown in the performance interface's browser compatibility table, most of these interfaces are broadly implemented by desktop browsers and have less support on mobile devices.

Pointer events - Web APIs
however, since many devices support other types of pointing input devices, such as pen/stylus and touch surfaces, extensions to the existing pointing device event models are needed.
... the standard also includes some extensions to the element and navigator interfaces.
... element extensions there are three extensions to the element interface: setpointercapture() designates a specific element as the capture target of future pointer events.
... navigator extension the navigator.maxtouchpoints property is used to determine the maximum number of simultaneous touch points that are supported at any single point in time.

PublicKeyCredentialCreationOptions - Web APIs
publickeycredentialcreationoptions.extensions optional an object with several client extensions' inputs.
... those extensions are used to request additional processing (e.g.
...smith", }, // requested format of new keypair pubkeycredparams: [{ type: "public-key", alg: cose_alg_ecdsa_w_sha256, }], // timeout after 1 minute timeout: 60000, // do not send the authenticator's origin attestation attestation: "none", extensions: { uvm: true, exts: true }, // filter out authenticators which are bound to the device authenticatorselection:{ authenticatorattachment: "cross-platform", requireresidentkey: true, userverification: "preferred" }, // exclude already existing credentials for the user excludecredentials: [ {...
... }, { type: "public-key", // the id for john-doe@example.com id : new uint8array(26) /* another id */ } ] } }; // create the new credential with the options above navigator.credentials.create(createcredentialoptions) .then(function (newcredentialinfo) { var attestationresponse = newcredentialinfo.response; var clientextensionsoutputs = newcredentialinfo.getclientextensionsresults(); // send the response to the relying party server // it will verify the content and integrity before // creating a new credential }).catch(function (err) { // deal with any error properly console.error(err); });; specifications specification status comment web authentication: an api f...

WebGLRenderingContext.getParameter() - Web APIs
when using the webgl_compressed_texture_s3tc extension: ext.compressed_rgb_s3tc_dxt1_ext ext.compressed_rgba_s3tc_dxt1_ext ext.compressed_rgba_s3tc_dxt3_ext ext.compressed_rgba_s3tc_dxt5_ext when using the webgl_compressed_texture_s3tc_srgb extension: ext.compressed_srgb_s3tc_dxt1_ext ext.compressed_srgb_alpha_s3tc_dxt1_ext ext.compressed_srgb_alpha_s3tc_dxt3_ext ext.compressed_srgb_alpha_s...
...3tc_dxt5_ext when using the webgl_compressed_texture_etc extension: ext.compressed_r11_eac ext.compressed_signed_r11_eac ext.compressed_rg11_eac ext.compressed_signed_rg11_eac ext.compressed_rgb8_etc2 ext.compressed_rgba8_etc2_eac ext.compressed_srgb8_etc2 ext.compressed_srgb8_alpha8_etc2_eac ext.compressed_rgb8_punchthrough_alpha1_etc2 ext.compressed_srgb8_punchthrough_alpha1_etc2 when using the webgl_compressed_texture_pvrtc extension: ext.compressed_rgb_pvrtc_4bppv1_img ext.compressed_rgba_pvrtc_4bppv1_img ext.compressed_rgb_pvrtc_2bppv1_img ext.compressed_rgba_pvrtc_2bppv1_img when using the webgl_compressed_texture_etc1 extension: ext.compressed_rgb_etc1_webgl when u...
...sing the webgl_compressed_texture_atc extension: ext.compressed_rgb_atc_webgl ext.compressed_rgba_atc_explicit_alpha_webgl ext.compressed_rgba_atc_interpolated_alpha_webgl when using the webgl_compressed_texture_astc extension: ext.compressed_rgba_astc_4x4_khr ext.compressed_srgb8_alpha8_astc_4x4_khr ext.compressed_rgba_astc_5x4_khr ext.compressed_srgb8_alpha8_astc_5x4_khr ext.compressed_rgba_astc_5x5_khr ext.compressed_srgb8_alpha8_astc_5x5_khr ext.compressed_rgba_astc_6x5_khr ext.compressed_srgb8_alpha8_astc_6x5_khr ext.compressed_rgba_astc_6x6_khr ext.compressed_srgb8_alpha8_astc_6x6_khr ext.compressed_rgba_astc_8x5_khr ext.compressed_srgb8_alpha8_astc_8x5_khr ext.compressed_rgba_astc_8x6_khr ...
... webgl extensions you can query the following pname parameters when using webgl extensions: constant returned type extension description ext.max_texture_max_anisotropy_ext glfloat ext_texture_filter_anisotropic maximum available anisotropy.

WebGL constants - Web APIs
standard webgl constants are installed on the webglrenderingcontext and webgl2renderingcontext objects, so that you use them as gl.constant_name: var canvas = document.getelementbyid('mycanvas'); var gl = canvas.getcontext('webgl'); gl.getparameter(gl.line_width); some constants are also provided by webgl extensions.
... var debuginfo = gl.getextension('webgl_debug_renderer_info'); var vendor = gl.getparameter(debuginfo.unmasked_vendor_webgl); the webgl tutorial has more information, examples, and resources on how to get started with webgl.
... table of contents standard webgl 1 constants standard webgl 2 constants webgl extension constants standard webgl 1 constants these constants are defined on the webglrenderingcontext interface.
... static_read 0x88e5 static_copy 0x88e6 dynamic_read 0x88e9 dynamic_copy 0x88ea depth_component32f 0x8cac depth32f_stencil8 0x8cad invalid_index 0xffffffff timeout_ignored -1 max_client_wait_timeout_webgl 0x9247 constants defined in webgl extensions angle_instanced_arrays constant name value description vertex_attrib_array_divisor_angle 0x88fe describes the frequency divisor used for instanced rendering.

<input>: The Input (Form Input) element - HTML: Hypertext Markup Language
webkitdirectory a boolean indicating whether or not to only allow the user to choose a directory (or directories, if multiple is also present) autocorrect a safari extension, the autocorrect attribute is a string which indicates whether or not to activate automatic correction while the user is editing this field.
... incremental the boolean attribute incremental is a webkit and blink extension (so supported by safari, opera, chrome, etc.) which, if present, tells the user agent to process the input as a live search.
... mozactionhint a mozilla extension, supported by firefox for android, which provides a hint as to what sort of action will be taken if the user presses the enter or return key while editing the field.
...the diversity of people using the web—and by extension your web site—practically guarantees that some of your site's visitors will have some variation in thought processes and/or circumstances that leads them to interpret your forms very differently from you without clear and properly-presented labels.

MIME types (IANA media types) - HTTP
a media type (also known as a multipurpose internet mail extensions or mime type) is a standard that indicates the nature and format of a document, file, or assortment of bytes.
... important: browsers use the mime type, not the file extension, to determine how to process a url, so it's important that web servers send the correct mime type in the response's content-type header.
...only a few image types are used commonly enough to be considered safe for use on web pages: abbreviation file format mime type file extension(s) browser compatibility apng animated portable network graphics image/apng .apng chrome, edge, firefox, opera, safari bmp bitmap file image/bmp .bmp chrome, edge, firefox, internet explorer, opera, safari gif graphics interchange format image/gif .gif chrome, edge, firefox, internet explorer, opera, safari ico micr...
...(for example, safari will look at the file extension in the url if the sent mime type is unsuitable.) there are security concerns as some mime types represent executable content.

510 Not Extended - HTTP
the hypertext transfer protocol (http) 510 not extended response status code is sent in the context of the http extension framework, defined in rfc 2774.
... in that specification a client may send a request that contains an extension declaration, that describes the extension to be used.
... if the server receives such a request, but any described extensions are not supported for the request, then the server responds with the 510 status code.
... status 510 not extended specifications specification title rfc 2774, section 7: 510 not extended an http extension framework ...

Intl.Locale.prototype.numberingSystem - JavaScript
nu is considered a locale string "extension subtag".
...to set the numberingsystem value via the string argument to the locale constructor, first add the -u extension key.
... next, add the -nu extension key to indicate that you are adding a value for numberingsystem.
... let numberingsystemviastr = new intl.locale("fr-latn-fr-u-nu-mong"); console.log(numberingsystemstr.numberingsystem); // prints "mong" setting the numberingsystem value via the configuration object argument the intl.locale constructor has an optional configuration object argument, which can be used to pass extension types.

eval() - JavaScript
if you run eval() with a string that could be affected by a malicious party, you may end up running malicious code on the user's machine with the permissions of your webpage / extension.
...see also downloading json and javascript in extensions.
... pass data instead of code for example, an extension designed to scrape contents of web-pages could have the scraping rules defined in xpath instead of javascript code.
...this advice applies mainly to extensions and xul applications, which can use components.utils.evalinsandbox for this.

Web Components
extensions for creating custom built-in elements the is global html attribute: allows you to specify that a standard html element should behave like a registered custom built-in element.
... element extensions extensions to the element interface related to shadow dom: the element.attachshadow() method attaches a shadow dom tree to the specified element.
... event extensions extensions to the event interface related to shadow dom: event.composed: returns a boolean which indicates whether the event will propagate across the shadow dom boundary into the standard dom (true), or not (false).
... element extensions extensions to the element interface related to slots: element.slot: returns the name of the shadow dom slot attached to the element.

Introduction to using XPath in JavaScript - XPath
this document describes the interface for using xpath in javascript internally, in extensions, and from websites.
... evaluating against an xml document within an extension the following uses an xml document located at chrome://yourextension/content/peopledb.xml as an example.
...rst="george" last="bush" /> <address street="1600 pennsylvania avenue" city="washington" country="usa"/> <phonenumber>202-456-1111</phonenumber> </person> <person> <name first="tony" last="blair" /> <address street="10 downing street" city="london" country="uk"/> <phonenumber>020 7925 0918</phonenumber> </person> </people> to make the contents of the xml document available within the extension, we create an xmlhttprequest object to load the document synchronously, the variable xmldoc will contain the document as an xmldocument object against which we can use the evaluate method javascript used in the extensions xul/js documents.
... var req = new xmlhttprequest(); req.open("get", "chrome://yourextension/content/peopledb.xml", false); req.send(null); var xmldoc = req.responsexml; var nsresolver = xmldoc.creatensresolver( xmldoc.ownerdocument == null ?

simple-prefs - Archive of obsolete content
by default, simple preferences are stored in a preference like: extensions.<addon-id>.<preference-name> for example, if you had a simple-pref named "somepreference" then you could get its value like so: require('sdk/preferences/service').get(['extensions', require('sdk/self').id, 'somepreference'].join('.')) this would give you the same value as: require('sdk/simple-prefs').prefs['somepreference'] the ability to change the default preferences branch is new in add...
...you can change the sub-branch of extensions using the preferences-branch key in your add-on's package.json file.
... example: function onprefchange(prefname) { console.log("the preference " + prefname + " value has changed!"); } require("sdk/simple-prefs").on("somepreference", onprefchange); require("sdk/simple-prefs").on("someotherpreference", onprefchange); // `""` listens to all changes in the extension's branch require("sdk/simple-prefs").on("", onprefchange); parameters prefname : string the name of the preference to watch for changes.

cfx - Archive of obsolete content
--templatedir=templatedir the cfx run command constructs the add-on using a extension template which you can find under the sdk root, in app-extension.
...if your extension works unpacked, but breaks after you cfx xpi it, you should try using this option.
... --templatedir=templatedir the cfx xpi command constructs the add-on using a extension template which you can find under the sdk root, in app-extension.

jpm - Archive of obsolete content
jpm post accepts the following options: --post-url url the url to post the extension to after creating an xpi.
... jpm watchpost accepts the following options: --post-url url the url to post the extension to after creating an xpi.
...an alternative development model is to use the extension auto-installer add-on: this listens for new xpi files on a specified port and installs them automatically.

package.json - Archive of obsolete content
hasembeddedwebextension new in jpm 1.2.0.
... boolean value: true if the add-on contains an embedded webextension.
... useful when the extension contains binaries.

Customizing the download progress bar - Archive of obsolete content
in your jar.mn file, add the following (replacing "myextension" with the name of your extension's chrome package): % overlay chrome://mozapps/content/downloads/downloads.xul chrome://myextension/content/downloads-overlay.xul in downloads-overlay.xul, reference the new stylesheet: <?xml version="1.0"?> <?xml-stylesheet href="chrome://myextension/skin/myextension.css" type="text/css"?> <overlay id="mydownloadoverlay" xmlns="http://www.mozilla.org/keymaster/gat...re.is.only.xul"> </overlay> in jar.mn, make sure that there is an asterisk in front of the entry for myextension.css so that it w...
... the myextension.css file will look something like this: richlistitem progressmeter { %ifdef xp_win min-height: 17px !important; %else %ifdef xp_macosx -moz-appearance: none !important; background-image: url(chrome://myextension/skin/progress_bg_osx.png) !important; %endif %endif } richlistitem .progress-bar { %ifdef xp_win -moz-appearance: none !important; background-image: url(chrome://myextension/skin/progress_fd_win.png) !important; %else %ifdef xp_macosx background-image: url(chrome://myextension/skin/progress_fd_osx.gif) !important; %endif %endif } note: this file only supports windows and mac, but it would be straightforward to add support for linux.
...in your overlay file, add a javascript file between the <overlay> and </overlay> tags: <script type="application/javascript" src="chrome://myextension/content/downloads-overlay.js" /> the javascript file will look something like this: var mydownloadmanager = { defaultcreatedownloaditem : null, init : function fdm_init() { mydownloadmanager.defaultcreatedownloaditem = window.createdownloaditem; window.createdownloaditem = function(aattrs) { var dl = mydownloadmanager.defaultcreatedownloaditem(aattrs); if (dl) { ...

Progress Listeners - Archive of obsolete content
progress listeners progress listeners allow extensions to be notified of events associated with documents loading in the browser and with tab switching events.
... var myextension = { oldurl: null, init: function() { gbrowser.addprogresslistener(this); }, uninit: function() { gbrowser.removeprogresslistener(this); }, processnewurl: function(auri) { if (auri.spec == this.oldurl) return; // now we know the url is new...
...eqi(["nsiwebprogresslistener", "nsisupportsweakreference"]), onlocationchange: function(aprogress, arequest, auri) { this.processnewurl(auri); }, onstatechange: function() {}, onprogresschange: function() {}, onstatuschange: function() {}, onsecuritychange: function() {} }; window.addeventlistener("load", function() { myextension.init() }, false); window.addeventlistener("unload", function() { myextension.uninit() }, false); note: if you use the same listener for more than one tab/window, use awebprogress.domwindow in the callback methods to obtain the tab/window which triggers the state change or event.

Developing add-ons - Archive of obsolete content
there are three primary types of add-on: extensions, plugins, and themes.
... extensions extensions add new functionality to mozilla applications such as firefox, seamonkey and thunderbird.
... jetpack browser extension development for everyone.

Appendix D: Loading Scripts - Archive of obsolete content
<script> tags xul script tags are traditionally the primary means of loading scripts for extension developers.
... advantages namespacing: since scripts executed via evalinsandbox run in a defined namespace, global namespace contamination and the resultant extension compatibility issues are not usually a problem.
... advantages namespacing: global namespace contamination and the resultant extension compatibility issues can often be avoided by loading sub-scripts into private namespaces.

Connecting to Remote Content - Archive of obsolete content
luckily, firefox now provides a few alternatives for extension developers.
...we recommend you to use extensions like tamper data.
...you can discover some interesting things about firefox like this, such as the automatic update urls for extensions, and the behavior of web applications such as gmail.

Appendix E: DOM Building and Insertion (HTML & XUL) - Archive of obsolete content
'sub div with textcontent and siblings', ['html:br', {}], ['html:input', {type:'checkbox', id:'mycheck'}], ['html:label', {for:'mycheck'}, 'here is text of label, click this text will check the box' ] ] ] ]; document.body.appendchild(jsontodom(json, document, {})); jquery templating for extensions which already use jquery, it is possible to use its builtin dom building functions for templating, though care must be taken when passing non-static strings to methods such as .append() and .html().
... for webextensions the most simple way is sanitize the output about javascript inline declaration and other wrong content.
... document.body.appendchild(parsehtml(document, xhr.responsetext, true, xhr.channel.uri)); see also displaying web content in an extension without security issues how to create a dom tree node.textcontent node.appendchild() element.setattribute() document.createelement() document.createtextnode() original document information author(s): kris maglione last updated date: 2011-08-08 ...

Firefox addons developer guide - Archive of obsolete content
the stuff about installing the dom inspector (https://developer.mozilla.org/en/firefox_addons_developer_guide/let%27s_build_a_firefox_extension#install_the_dom_inspector) is not accurate for firefox 3 or later, since it's no longer included in the firefox installer and must be downloaded from amo.
... for example, here: https://developer.mozilla.org/en/firefox_addons_developer_guide/let's_build_a_firefox_extension#init_method the text of the paragraph should begin "the <code>init()</code> method is as shown...".
...there already is a tutorial for beginners: building an extension.

Source code directories overview - Archive of obsolete content
calendar contains the code for the various mozilla calendar apps and extensions.
... extensions contains c interfaces, c code, xul and javascript code for various add-ins that are related to browsing.
... extensions contains code for making certain extensions work.

Monitoring downloads - Archive of obsolete content
the result is a window you can open by choosing "download log" in the tools menu, which lists all downloads that have been started since you installed the extension.
... setting up when the extension loads, it will do some housekeeping chores.
... exercises for the reader there are some obvious things that could be done to improve this extension.

Table Layout Regression Tests - Archive of obsolete content
to build the layoutdebugger itself, build either all extensions or include layoutdebug in your .mozconfig file.
... for example ac_add_options --enable-extensions=all.
...their name is generated by replacing the old extension .html or .xml with .rgd.

URIs and URLs - Archive of obsolete content
the filename consists of filebasename and fileextension.
... if the spec is completly broken down, it consists of: scheme, username, password, host, port, directory, filebasename, fileextension, param, query and ref.
... together these segments form the url spec with the following syntax: scheme://username:password@host:port/directory/filebasename.fileextension;param?query#ref for performance reasons the complete spec is stored in escaped form in the nsstandardurl object with pointers (position and length) to each basic segment and for the more global segments like path and prehost for example.

Venkman Introduction - Archive of obsolete content
file names are displayed after a color coded, single letter icon representing the file extension.
... debugging extensions although at first glance it might seem that venkman cannot debug extensions, doing so is in fact fully supported; it's just disabled by default.
... to debug your extension with venkman (xul files and their attached js files), you'll have to load browser and extension files into venkman by unchecking debug > exclude browser files.

Venkman - Archive of obsolete content
venkman has been provided as part of the mozilla install distribution since october 2001, as well as an extension package in xpi format.
...also available from firefox add-ons as an extension.
... nvu and kompozer javascript debugger extension version 0.9.84 is available from nvu's downloads page.

Toolbars - Archive of obsolete content
custom toolbar button another example of how to create a toolbar button, complete with a sample extension you can download and try.
... community view mozilla extension development forums...
... tools dom inspector edit the live dom (firefox and thunderbird) mozilla labs add-on builder extension developer's extension a suite of development tools chrome list view files in chrome:// (firefox, thunderbird) extension wizard a web-based extension skeleton generator (firefox and thunderbird) ...

Localization - Archive of obsolete content
you would normally have one dtd file (with an extension .dtd) per xul file.
...typically, you will have one dtd file for each xul file, usually with the same filename except with a .dtd extension.
... « previousnext » see also how to localize html pages, xul files, and js/jsm files from bootstrapped add-ons: bootstrapped extensions :: localization (l10n) ...

Property Files - Archive of obsolete content
you will find property files alongside the dtd files with a .properties extension.
...see localizing extension descriptions for more details.
... « previousnext » see also how to localize html pages, xul files, and js/jsm files from bootstrapped add-ons: bootstrapped extensions :: localization (l10n) ...

XUL accessibility tool - Archive of obsolete content
general information the xul accessibility tool is a firefox extension designed by aaron andersen of webaim as part of a mozilla foundation accessibility minigrant in the spring of 2007.
...future versions of the extension will be available from addons.mozilla.org.
... add the tool into the addons.mozilla.org review process go through the most useful/popular extensions with tool and fix a11y issues add checker to tinderbox so that bugs are caught at checkin time some or all of this work could be done through grants, and a likely person to oversee the grant deliverables and milestones would be mark finkle.

Building XULRunner with Python - Archive of obsolete content
this page describes how to build and use xulrunner with the python extension on windows and while generally useful it is written based on experiences with accessibility projects.
...or, if you are interested in working with xulrunner with python on linux, see mark lise's post with the python extensions enabled xulrunner provides python script access to the dom and xpcom in addition to the usual java script.
... mk_add_options moz_objdir=@topsrcdir@/../obj-xulrunner mk_add_options moz_co_project=xulrunner ac_add_options --enable-application=xulrunner ac_add_options --enable-extensions=python,default ac_add_options --disable-javaxpcom ac_add_options --disable-activex ac_add_options --disable-activex-scripting ac_add_options --disable-tests ac_add_options --enable-optimize to check out all the required source code and build it the first time with no local client.mk file, execute cd /c/projects cvs -d :pserver:anonymous@cvs-mirror.mozilla.org:/cvsroot co mozilla/client.mk cd ...

Creating XULRunner Apps with the Mozilla Build System - Archive of obsolete content
the only obvious reason for this would be if you need to implement part of your application in c++, as described in the introduction to the now classic creating custom firefox extensions with the mozilla build system.
...the public/ and src/ directories that you put in the components/ directory will look the same as for an extension that includes c++ components, so you can use the relevant sections of creating custom firefox extensions with the mozilla build system as a reference.
... the makefiles, however, will be difference since you won't be defining things like xpi_name (this is used only for extensions).

Using LDAP XPCOM with XULRunner - Archive of obsolete content
the solution is to use the bsmedberg stub, described in using dependent libraries in extension components: the component library is just a loader of the real library and all its dependencies, so as all the needed libraries are loaded.
... create a subdirectory extensions/ldapstub in the mozilla source code directory, containing two files, makefile.in and ldapstubloader.cpp: makefile.in: # copyright (c) 2005 benjamin smedberg <benjamin@smedbergs.us> depth = ../..
...al_cstring(krealcomponent)); prlibrary *lib; rv = library->load(&lib); if (ns_failed(rv)) return rv; nsgetmoduleproc getmoduleproc = (nsgetmoduleproc) pr_findfunctionsymbol(lib, ns_get_module_symbol); if (!getmoduleproc) return ns_error_failure; return getmoduleproc(acompmgr, alocation, aresult); } then change your .mozconfig to add this line: ac_add_options --enable-extensions=ldapstub rebuild xulrunner.

calIFileType - Archive of obsolete content
defined in calendar/base/public/caliimportexport.idl interface code [scriptable, uuid(efef8333-e995-4f45-bdf7-bfcabbd9793e)] interface califiletype : nsisupports { readonly attribute astring defaultextension; readonly attribute astring extensionfilter; readonly attribute astring description; }; attributes defaultextension the default extension that should be associated with files of this type.
... extensionfilter the extension filter to use in the filepicker's filter list.
... separate multiple extensions with semicolon and space.

2006-10-06 - Archive of obsolete content
extension compatibility for firefox 2 chris hofmann reminds about the push to have extensions work with ff2.
... also invites people to file bugs about extensions that don't work.
... also invites people to help extension developers test for compatibility (link to a bunch of extension compatability bugs) discussions reining in the release process a discussion of what can be done to speed up the release process.

Plugins - Archive of obsolete content
plugins are different from extensions, which modify or enhance the functionality of the browser itself.
... scripting plugins (npruntime) this reference describes the new cross-browser npapi extensions that let plugins be scriptable and also let them access the script objects in the browser.
... xembed extension for mozilla plugins recent versions of mozilla on *nix-based systems include an extension for writing plugins that use xembed instead of using the old xt-based main loop that most plugins have been using since the netscape 3.x days.

Proposal - Archive of obsolete content
spec exists itunes rss itunes extension modules used for ipradio/podcasting.
... spec exists media rss rss extension module used for iptv and ipradio/podcasting.
... spec exists newsgator feed extension created to make rss feeds work better with newsgator software.

Developing Mozilla XForms - Archive of obsolete content
debugging always start with a debug build of the xforms and the schema-validation extensions.
...then start firefox out of the build directory: cd obj-*/dist/firefox ./firefox -no-remote -jsconsole -p yourprofilename the xforms extension that was built together with firefox should be already installed.
...schema validation problems the schema-validation extension contains a logging facility that can show some internals on the schema processing.

Implementation Status - Archive of obsolete content
limitations and extensions the extension has some limitations and custom extension to the xforms 1.1 specification.
... 292333; 3.4 extension module unsupported 300760; 3.5 mustunderstand module unsupported 300757; 4.
...meter 419190; 7.10.2 current() supported 7.10.3 id() unsupported 7.10.4 context() unsupported 7.11.1 choose() unsupported 7.11.2 event() supported 7.12 extension functions unsupported not a compliance requirement for an xforms processor 8.

React resources - Learn web development
react devtools is available in a number of forms: a chrome browser extension.
... a firefox browser extension.
... a chromium edge browser extension (available soon).

Handling common accessibility problems - Learn web development
chrome: install the web developer toolbar extension, then restart the browser.
...its most immediately useful form is probably the browser extensions: axe for chrome axe for firefox these add an accessibility tab to the browser developer tools.
...this is not always the case (chromevox is a browser extension), but usually.

Gecko info for Windows accessibility vendors
to help web developers in that regard, there is the wonderful memory leak monitor, a firefox 1.5+ extension from david baron, which warns chrome and extension developers about one particular type of memory leak.
...this typically happens for things like observers, timer callbacks, and (in firefox 1.5 and earlier) event listeners, and is one of the most common causes of leaks in chrome and extension code.
...this extension is useful if you need to work on a character by character basis, whereas iaccessible provides only node by node support.

Creating a Login Manager storage module
extensions can replace the built-in password storage with their own implementation.
... if you just want to use the login manager in your extensions, refer to the article using nsiloginmanager.
...you should start with the existing code if you want to implement that in your extension.

Creating a spell check dictionary add-on
such a dictionary consists of two files, one with a .dic and one with an .aff file extension.
... packaging a firefox add-on is a zip file renamed to use an .xpi file extension instead of the normal .zip file extension.
... once you have added these files to your zip file and renamed the file to have the .xpi extension, you can install your add-on in firefox and test it.

Simple Instantbird build
windows build prerequisites gnu/linux build prerequisites mac os x build prerequisites tip: after completing setup for your os, and before you get the source, you can opt to add the progressextension to your mercurial.ini (for windows) or .hgrc (for *nix / mac) file.
...see: configure mercurial .hgrc file for progress extension.
... building purplexpcom and libpurple first download the purplexpcom code: hg clone http://hg.mozilla.org/users/florian_queze.net/purple mozilla/extensions/purple if you've set up your build environment as above, then all you need to do is: echo 'ac_add_options --enable-extensions=purple' >> .mozconfig in the comm-central directory, or just add the ac_add_options --enable-extensions=purple line to your .mozconfig with your favorite editor.

The Firefox codebase: CSS Guidelines
in addition to this, firefox supports a variety of webextension themes that can be installed from amo.
... for testing purposes, here is an example of a webextension theme.
... never write css specially for the built-in light/dark theme in compacttheme.css unless that css isn't supposed to affect webextension themes.

Experimental features in Firefox
nightly 30 no developer edition 30 no beta 30 no release 30 no preference name canvas.hitregions.enabled webgl: draft extensions when this preference is enabled, any webgl extensions currently in "draft" status which are being tested are enabled for use.
... currently, there are no webgl extensions being tested by firefox.
... nightly 73 no developer edition 73 no beta 73 no release 73 no preference name layout.css.constructable-stylesheets.enabled webrtc and media the following experimental features include those found in the webrtc api, the web audio api, the media session api, the media source extensions api, the encrypted media extensions api, and the media capture and streams api.

Using the Browser API
the html browser api is an extension of the html <iframe> element that allows web apps to implement browsers or browser-like applications.
... api extensions: the api includes several new methods and events to manipulate and listen for changes to the embedded content's state, interited by the htmliframeelement interface.
... it is implied for webextensions, which always run in a separate content process from web content.

Interfacing with the Add-on Repository
the add-on repository javascript code module makes it easy for your extension to interface with the amo repository.
...to make the service work for the time being, you can use code like this when your extension starts up: var prefsservice = components.classes["@mozilla.org/preferences-service;1"] .getservice(components.interfaces.nsiprefservice); var prefbranch = prefsservice.getbranch("extensions."); var recurl = ""; try { recurl = prefbranch.getcharpref("getaddons.recommended.url"); } catch(e) { recurl = ""; } if (recurl == "") { prefbranch.setcharpref("getaddons.reco...
...mmended.url", "https://services.addons.mozilla.org/%locale%/%app%/api/%api_version%/list/recommended/all/%max_results%/%os%/%version%?src=firefox"); prefsservice.savepreffile(null); } this fetches the value of the extensions.getaddons.recommended.url preference, and, if the preference doesn't exist or has no value, sets the value of the preference to the correct one for the amo site.

Application Translation with Mercurial
the firefox extension scrapbook is used in this guide.
... paste the following content into the file: [ui] username = firstname lastname <mynick@example.com> merge = internal:merge [alias] qexport = export -g -r qtip qexportall = diff -r qparent [defaults] commit = -v diff = -p -u 8 qdiff = -p -u 8 qnew = -u [diff] git = 1 showfunc = 1 unified = 8 [extensions] hgext.mq = progress = [hooks] put in your name and email address which later will be public on the internet after your translation patch got accepted and uploaded.
...this guide achieves this with the firefox extension scrapbook.

Localizing with Mozilla Translator
this means browser, extensions/reporter, dom, netwer, security, and toolkit.
... ; assuming we are in a directory containing mozilla-central/ $ mkdir locale-only $ cd locale-only $ mkdir -p browser extensions/reporter other-licenses/branding/firefox/ $ cd browser; ln -s ../../mozilla-central/browser/locales/; cd ..
... $ cd extensions/reporter; ln -s ../../../mozilla-central/extensions/reporter/locales/; cd ../..

Leak Monitor
leak monitor is a firefox extension by l.
... david baron that helps extension and chrome developers to find memory leaks.
... obtain the extension on amo (addons.mozilla.org) view more information on leak monitor on david baron's page ...

NSS_3.12.2_release_notes.html
bug 432260: [[@ pkix_pl_httpdefaultclient_hdrcheckcomplete - pkix_pl_memcpy] crashes when there is no content-length header in the http response bug 436599: pkix: aia extension is not used in some bridge ca / known certs configuration bug 437804: certutil -r for cert renewal should derive the subject from the cert if none is specified.
... bug 459231: memory leak in cert fetching - aia extension.
... bug 459248: support intel aes extensions.

NSS 3.22 release notes
in ssl.h ssl_peersignedcerttimestamps - get signed_certificate_timestamp tls extension data ssl_setsignedcerttimestamps - set signed_certificate_timestamp tls extension data new types in secoidt.h the following are added to secoidtag: sec_oid_aes_128_gcm sec_oid_aes_192_gcm sec_oid_aes_256_gcm sec_oid_idea_cbc sec_oid_rc2_40_cbc sec_oid_des_40_cbc sec_oid_rc4_40 sec_oid_rc4_56 sec_oid_null_cipher sec_oid_hma...
... sec_oid_tls_ecdhe_rsa sec_oid_tls_ecdh_ecdsa sec_oid_tls_ecdh_rsa sec_oid_tls_ecdh_anon sec_oid_tls_rsa_export sec_oid_tls_dhe_rsa_export sec_oid_tls_dhe_dss_export sec_oid_tls_dh_rsa_export sec_oid_tls_dh_dss_export sec_oid_tls_dh_anon_export sec_oid_apply_ssl_policy in sslt.h ssl_signed_cert_timestamp_xtn is added to sslextensiontype.
...256 for pbkdf ckp_pkcs5_pbkd2_hmac_sha512_224 - prf based on hmac with sha-512 truncated to 224 bits for pbkdf (not supported) ckp_pkcs5_pbkd2_hmac_sha512_256 - prf based on hmac with sha-512 truncated to 256 bits for pbkdf (not supported) in secoidt.h nss_use_alg_in_ssl nss_use_policy_in_ssl in ssl.h ssl_enable_signed_cert_timestamps in sslt.h ssl_max_extensions is updated to 13 notable changes in nss 3.22 nss c++ tests are built by default, requiring a c++11 compiler.

NSS tools : signtool
synopsis signtool [-k keyname] -h -h -l -l -m -v -w -g nickname -s size -b basename [[-c compression level] ] [[-d cert-dir] ] [[-i installer script] ] [[-m metafile] ] [[-x name] ] [[-f filename] ] [[-t|--token tokenname] ] [[-e extension] ] [[-o] ] [[-z] ] [[-x] ] [[--outfile] ] [[--verbose value] ] [[--norecurse] ] [[--leavearc] ] [[-j directory] ] [[-z jarfile] ] [[-o] ] [[-p password] ] [directory-tree] [archive] description the signing tool, signtool, creates digital signatures and uses a java archive (jar) file to associate the signatures with files in a directory.
... -e extension tells signtool to sign only files with the given extension; for example, use -e".class" to sign only java class files.
... extension same as -e option.

Web Replay
time travel features this section describes extensions to the developer tools that use time travel to help debug a recording/replaying tab.
... if we record and later replay the order in which threads acquire locks (and, by extension, release locks and use condvars) then accesses on lock-protected memory will occur in the same order.
... recording/replaying process extensions during initialization the child process spawns a thread that does not participate in the recording — any ipc or other system calls it performs are live, even when replaying.

Animated PNG graphics
authors the apng specification was authored by: stuart parmenter <pavlov@pavlov.net> vladimir vukicevic <vladimir@pobox.com> andrew smith <asmith15@littlesvr.ca> overview apng is an extension of the portable network graphics (png) format, adding support for animated images.
... 1 apng_blend_op_over the frame should be composited onto the output buffer based on its alpha, using a simple over operation as described in the alpha channel processing section of the extensions to the png specification, version 1.2.0.
... an application (open source) using the mozilla encoder to assemble apngs available here: http://littlesvr.ca/apng/apngedit.html see also portable network graphics (png) specification (second edition) extensions to the png specification, version 1.2.0 graphics interchange format 89a ...

AT APIs Support
open komodo - platform for building developer environments miro - a free, open source internet tv and video player any xulrunner application (songbird media player, etc.) extensions to other xul apps (e.g.
... firefox extensions) gecko version for firefox and all other gecko-based products: this documentation applies to up-to-date product builds based on gecko 1.9.2 -- currently not available on official releases.
...as well you might find helpful the about:accessibilityenabled firefox extension.

XForms Accessibility
for firefox, you may directly download the nighly "trunk" build of firefox and install the xforms extension which lives in 'xpi' directory of the build.
...you will find trunk builds of firefox at ftp.mozilla.org, trunk builds of xforms extension (windows) at ftp.mozilla.org or trunk builds of xforms extension (linux) ftp.mozilla.org.
... build it yourself if you would like to build firefox/seamonkey yourself then please ensure your .mozconfig file has the following option: ac_add_options --enable-extensions=default,xforms,schema-validation how to test there are two approaches to test xforms accessibility.

FUEL
consider using the add-ons sdk instead fuel is a javascript library designed to help developers build extensions using terminology and interfaces that are familiar to them.
... fuel is about making it easier for extension developers to be productive, by minimizing some of the xpcom formality and adding some "modern" javascript ideas.
... objects extiapplication objects extiapplication exticonsole extieventitem extieventlistener extievents extiextension extiextensions extipreference extipreferencebranch extisessionstorage fueliapplication objects fueliannotations fueliapplication fuelibookmark fuelibookmarkfolder fuelibookmarkroots fuelibrowsertab fueliwindow xpcom although the fuel application object is preloaded into xul scripts, it is not preloaded into javascript xpcom code.

SMILE
this article covers features introduced in seamonkey 2 smile is a javascript library designed to help developers build extensions using terminology and interfaces that are familiar to them.
... smile is about making it easier for extension developers to be productive, by minimizing some of the xpcom formality and adding some "modern" javascript ideas.
... objects extiapplication objects exticonsole extieventitem extieventlistener extievents extiextension extiextensions extipreference extipreferencebranch extisessionstorage smileiapplication objects smileibookmarkroots smileiwindow smileibrowsertab smileiapplication xpcom although the extiapplication object is preloaded into xul scripts, it is not preloaded into javascript xpcom code.

STEEL
consider using the functions found in appconstants.jsm or services.jsm instead steel is the scriptable thunderbird easy extension library.
... it is a fuel-like set of interfaces to facilitate thunderbird extension development.
... objects extiapplication objects extiapplication exticonsole extieventitem extieventlistener extievents extiextension extiextensions extipreference extipreferencebranch extisessionstorage steeliapplication objects steeliapplication xpcom although the steel steeliapplication object is preloaded into xul scripts, it is not preloaded into javascript xpcom code.

XML Extras
other test cases for each of the implemented components listed above exist in extensions/xmlextras/tests/.
...file bugs for new test you have, and/or check them into extensions/xmlextras/tests/.
...there are some in extensions/xmlextras/tests/.

XPCOM glue
extension or xulrunner application components, should use the dependent glue.
... internal linkage will be unavailable to extension authors in xulrunner 1.9 (firefox 3) because the nonfrozen symbols will not be exported from libxul.
... extension and application authors currently using internal linkage should read the guide on migrating from internal linkage to frozen linkage.

Components.utils.unload
this can be particularly handy with restartless (boostrapped) extensions, so that you can unload an old version of a code module when a new version of your add-on is installed.
...you should not unload modules that are part of the application (anything under resource://gre/ or resource:/// or resource://app/) as these may be in use by other extensions and the application.
... only unload modules you include as part of your extension.

nsIExternalHelperAppService
to access this service, use: var externalhelperappservice = components.classes["@mozilla.org/uriloader/external-helper-app-service;1"] .getservice(components.interfaces.nsiexternalhelperappservice); method overview boolean applydecodingforextension(in autf8string aextension, in acstring aencodingtype); nsistreamlistener docontent(in acstring amimecontenttype, in nsirequest arequest, in nsiinterfacerequestor awindowcontext, in boolean aforcesave); methods applydecodingforextension() determines whether or not data whose filename has the specified extension should be decoded from the specified encoding type before being saved or...
...boolean applydecodingforextension( in autf8string aextension, in acstring aencodingtype ); parameters aextension the filename extension to check.
... return value true if data from urls with the specified extension and encoding should be decoded prior to saving the file or delivering it to a helper application; otherwise false.

nsILocalFileMac
obsolete since gecko 1.9.2 boolean ispackage(); void launchwithdoc(in nsilocalfile adoctoload, in boolean alaunchinbackground); void opendocwithapp(in nsilocalfile aapptoopenwith, in boolean alaunchinbackground); void setfiletypeandcreatorfromextension(in string aextension); obsolete since gecko 1.9.2 void setfiletypeandcreatorfrommimetype(in string amimetype); obsolete since gecko 1.9.2 attributes attribute type description bundledisplayname astring returns the display name of the application bundle (usually the human readable name of the application) read only.
... setfiletypeandcreatorfromextension() obsolete since gecko 1.9.2 (firefox 3.6 / thunderbird 3.1 / fennec 1.0) sets the file type and creator code from a file extension internet config is used to determine the mapping.
... void setfiletypeandcreatorfromextension( in string aextension ); parameters aextension setfiletypeandcreatorfrommimetype() obsolete since gecko 1.9.2 (firefox 3.6 / thunderbird 3.1 / fennec 1.0) sets the file type and creator code from a mime type.

nsIMsgCustomColumnHandler
it can be used in the thunderbird threadpane for extensions to overlay their own columns.
... last changed in gecko 1.9 (firefox 3) inherits from: nsitreeview this interface is meant to be implemented by extensions, as shown in the tutorial.
...see also extensions:thunderbird:creating_a_custom_column ...

nsIPluginHost
void ispluginenabledforextension(in string aextension, in constcharstarref amimetype); native code only!
... nsistreamlistener instantiatepluginforchannel( in nsichannel achannel, in nsiplugininstanceowner aowner ); parameters achannel aowner return value native code only!ispluginenabledforextension void ispluginenabledforextension( in string aextension, in constcharstarref amimetype ); parameters aextension amimetype native code only!ispluginenabledfortype void ispluginenabledfortype( in string amimetype ); parameters amimetype native code only!loadplugins void loadplugins(); parameters none.
... = 0; i < plugintags.length; ++i) { let plugintag = plugintags[i]; let mimetypes = plugintag.getmimetypes(); console.warn('plugintag:', plugintag.name, 'mimetypes:', mimetypes); // go through all the mime types and get the handler service for (let j = 0; j < mimetypes.length; ++j) { let type = mimetypes[j]; let wrappedhandlerinfo = mimeservice.getfromtypeandextension(type, null); console.log('handler info for type', type, wrappedhandlerinfo); } } resultingagentstring ...

nsISessionStore
browser/components/sessionstore/nsisessionstore.idlscriptable provides a means for extensions and other code to store data in association with browser sessions, tabs, and windows.
... note: this function is intended for use only by the browser; extensions shouldn't call it.
... for many extensions, those that overlay browser.xul, the appropriate window object for nsisessionstore is the global object 'window'.

nsIURL
inherits from: nsiuri last changed in gecko 9.0 (firefox 9.0 / thunderbird 9.0 / seamonkey 2.6) http://host/directory/filebasename.fileextension?query http://host/directory/filebasename.fileextension#ref http://host/directory/filebasename.fileextension;param \ \ / \ ----------------------- \ | / \ filename / ---------------------------- | filepath you can get a nsiurl from an nsiuri, using the queryinterface() method: var myuri = components.c...
... fileextension autf8string file extension portion of a filename in a url.
... if a file extension does not exist, the empty string is returned.

nsIURLParser
cko 1.7 method overview void parseauthority(in string authority, in long authoritylen, out unsigned long usernamepos, out long usernamelen, out unsigned long passwordpos, out long passwordlen, out unsigned long hostnamepos, out long hostnamelen, out long port); void parsefilename(in string filename, in long filenamelen, out unsigned long basenamepos, out long basenamelen, out unsigned long extensionpos, out long extensionlen); void parsefilepath(in string filepath, in long filepathlen, out unsigned long directorypos, out long directorylen, out unsigned long basenamepos, out long basenamelen, out unsigned long extensionpos, out long extensionlen); void parsepath(in string path, in long pathlen, out unsigned long filepathpos, out long filepathlen, out unsigned long parampos, out long param...
... in string authority, in long authoritylen, out unsigned long usernamepos, out long usernamelen, out unsigned long passwordpos, out long passwordlen, out unsigned long hostnamepos, out long hostnamelen, out long port ); parameters authority authoritylen usernamepos usernamelen passwordpos passwordlen hostnamepos hostnamelen port parsefilename() filename = <basename>.<extension> void parsefilename( in string filename, in long filenamelen, out unsigned long basenamepos, out long basenamelen, out unsigned long extensionpos, out long extensionlen ); parameters filename filenamelen basenamepos basenamelen extensionpos extensionlen parsefilepath() breaks the file path string up into: the directory portion, file base name, and file extension.
... filepath = <directory><basename>.<extension> void parsefilepath( in string filepath, in long filepathlen, out unsigned long directorypos, out long directorylen, out unsigned long basenamepos, out long basenamelen, out unsigned long extensionpos, out long extensionlen ); parameters filepath filepathlen directorypos directorylen basenamepos basenamelen extensionpos extensionlen parsepath() breaks the path string up into its 4 major components: a file path, a param string, a query string, and a reference string.

nsIZipReader
xpi files are zip files, just firefox needs the extension to be xpi.
... change "portabletester@jetpack.xpi" to the name of a xpi file in your extensions folder.
... var zr = cc["@mozilla.org/libjar/zip-reader;1"].createinstance(ci.nsizipreader); cu.import('resource://gre/modules/osfile.jsm'); cu.import('resource://gre/modules/fileutils.jsm'); var reusablestreaminstance = cc['@mozilla.org/scriptableinputstream;1'].createinstance(ci.nsiscriptableinputstream); var pathtoxpitoread = os.path.join(os.constants.path.profiledir, 'extensions', 'portabletester@jetpack.xpi'); var nsifilexpi = new fileutils.file(pathtoxpitoread); //services.ww.activewindow.alert(pathtoxpitoread); try { zr.open(nsifilexpi); //if file dne it throws here var entries = zr.findentries('*'); //we use asterik because we want everything listed out while (entries.hasmore()) { var entrypointer = entries.getnext(); ...

XPCOM Interface Reference
component; nsiprefbranchextensionmanager (toolkit)iaccessible2iaccessibleactioniaccessibleapplicationiaccessiblecomponentiaccessibleeditabletextiaccessiblehyperlinkiaccessiblehypertextiaccessibleimageiaccessiblerelationiaccessibletableiaccessibletable2iaccessibletablecelliaccessibletextiaccessiblevalueidispatchijsdebuggeramiinstallcallbackamiinstalltriggeramiwebinstallinfoamiwebinstalllisteneramiwebinstallpromptamiwebinstallerimgicacheimgicontainerimgicontainerobserverimgidecoderimgidecoderobserverimgiencoderimgiloaderimgirequestinidomutilsjsdistackframemoziasyncfaviconsmoziasynchistorymozicoloranalyzermozijssubscriptloadermozipersonaldictionarymoziplaceinfomoziplacesautocompletemoziregistrymozirepresentativecolo...
...idownloadernsidragdrophandlernsidragservicensidragsessionnsidroppedlinkhandlernsidroppedlinkitemnsidynamiccontainernsieditornsieditorboxobjectnsieditordocshellnsieditorimesupportnsieditorloggingnsieditormailsupportnsieditorobservernsieditorspellchecknsieffectivetldservicensienumeratornsienvironmentnsierrorservicensieventlistenerinfonsieventlistenerservicensieventsourcensieventtargetnsiexceptionnsiextensionmanagernsiexternalhelperappservicensiexternalprotocolservicensiexternalurlhandlerservicensiftpchannelnsiftpeventsinknsifactorynsifavicondatacallbacknsifaviconservicensifeednsifeedcontainernsifeedelementbasensifeedentrynsifeedgeneratornsifeedpersonnsifeedprocessornsifeedprogresslistenernsifeedresultnsifeedresultlistenernsifeedtextconstructnsifilensifileinputstreamnsifileoutputstreamnsifilepickernsi...
...rynsimemorymultireporternsimemorymultireportercallbacknsimemoryreporternsimemoryreportermanagernsimenuboxobjectnsimessagebroadcasternsimessagelistenernsimessagelistenermanagernsimessagesendernsimessagewakeupservicensimessengernsimicrosummarynsimicrosummarygeneratornsimicrosummaryobservernsimicrosummaryservicensimicrosummarysetnsimimeconverternsimimeheadersnsimodulensimsgaccountnsimsgaccountmanagerextensionnsimsgcompfieldsnsimsgcustomcolumnhandlernsimsgdbhdrnsimsgdbviewnsimsgdbviewcommandupdaternsimsgdatabasensimsgfilternsimsgfiltercustomactionnsimsgfilterlistnsimsgfoldernsimsgheaderparsernsimsgidentitynsimsgincomingservernsimsgmessageservicensimsgprotocolinfonsimsgruleactionnsimsgsearchcustomtermnsimsgsearchnotifynsimsgsearchscopetermnsimsgsearchsessionnsimsgsearchtermnsimsgsearchvaluensimsgsendlat...

Setting HTTP request headers
----------------------> createinstance"); return new myhttplistener(); } }, canunload: function(compmgr) { return true; } }; function nsgetmodule(compmgr, filespec) { return mymodule; } privacy and security good practice a use case for setting specific a http request header is to have a specific web site be able to check if a specific plugin / addon / extension is installed.
... the good practice is not to have this specific http header (for example "x-site.net-extension") sent all the time but only when doing requests with this specific web sites.
... by not advertising to all sites what extensions are installed this improves both privacy (this makes it harder to track a user known by his set of plugins, addons and extensions) and security (some plugins, addons and extensions may be known to have flaws by attackers).

Working with Multiple Versions of Interfaces
in the extension that prompted this note, i needed to obtain the hwnd of the document (yes its on windows) in order to identify each particular extension instance.
...the problem arises when one tries to run an extension built with the latest sdk in an older version of firefox, say firefox 2.
...getwindowhandle is the tenth method declared in the nsiaccessibledocument.h that firefox 2 was built with, but actually the eighth method in the sdk that i used to build my extension (and hence xpcom component).

XSLT 2.0
for users saxon-ce no extensions are required, saxon-ce runs whenever a html page is loaded that links to the saxon-ce javascript library.
... saxon-b the xsl results extension uses the new incarnation of liveconnect (handled by java 1.6v12+ instead of mozilla-specific code) to connect with the java-based saxon-b library, and adds support for having xslt performed automatically when visiting a page with the appropriate xslt processing instruction (and which isn't processed by firefox's own xslt 1.0 processor).
... saxon-b the extension demonstrates how one can use liveconnect code to communicate with the saxon-b library, but one might find the javascript code module approach used inside the extension xquseme as a more reusable approach.

FAQ
the old contents of this faq page were duplicated in the setting up extension development environment article and the building a thunderbird extension article.
... (duplicate content has been removed from this page.) other resources can be found on the thunderbird extension development portal page.
... mozillazine's getting started tutorial might provide some useful general pointers regarding developing mozilla extensions.

js-ctypes
js-ctypes allows application and extension code to call back and forth to native code written in c.
... note: js-ctypes is only available from chrome code; that is, ctypes is not available to websites, only application and extension code.
... examples add to iphoto a firefox extension that uses js-ctypes to call carbon and core foundation framework routines on mac os x to implement an "add image to iphoto" feature in firefox.

Source map errors - Firefox Developer Tools
the message looks a little different in this case: in this case, the error will also be displayed in the source tab in the debugger: networkerror when attempting to fetch resource a bug in firefox prevents it from loading source maps for web extensions.
... see bug 1437937: webextensions doesn't find source maps for details.
... ressourcen-adresse: moz-extension://c7f0f003-4fcf-49fd-8ec0-c49361266581/background.js source-map-adresse: background.js.map the only workaround is to manually change the map url to a public one (http://localhost:1234/file.map.js) and start a local webserver at this port.

Debugger.Object - Firefox Developer Tools
for example, in firefox, code in privileged compartments sees content dom element objects without redefinitions or extensions made to that object’s properties by content code.
...(this function behaves like the standard object.freeze function, except that the object to be sealed is implicit and in a different compartment from the caller.) preventextensions() prevent properties from being added to the referent.
... (this function behaves like the standard object.preventextensions function, except that the object to operate on is implicit and in a different compartment from the caller.) issealed() return true if the referent is sealed—that is, if it is not extensible, and all its properties have been marked as non-configurable.

Applying styles and colors - Web APIs
more exactly, the miter limit is the maximum allowed ratio of the extension length (in the html canvas, it is measured between the outside corner of the joined edges of the line and the common endpoint of connecting segments specified in the path) to half the line width.
... if you specify a miterlimit value below 4.2 in this demo, none of the visible corners will join with a miter extension, but only with a small bevel near the blue lines; with a miterlimit above 10, most corners in this demo should join with a miter far away from the blue lines, and whose height is decreasing between corners from left to right because they connect with growing angles; with intermediate values, the corners on the left side will only join with a bevel near the blue lines, and the corners on the right...
... side with a miter extension (also with a decreasing height).

Gamepad - Web APIs
experimental extensions to gamepad the following interfaces are defined in the gamepad extensions specification, and provide access to experimental features like haptic feedback and webvr controller pose information.
... working draft initial definition gamepad extensionsthe definition of 'gamepad extensions' in that specification.
... editor's draft defines the experimental extensions to gamepad ...

PublicKeyCredential.response - Web APIs
in order to validate the creation of credentials, a relying party's server needs both: this response the extensions of the client (given by publickeycredential.getclientextensionresults()) to validate the demand.
... note: when validating the fetching of existing credentials, the whole publickeycredential object and the client extensions are necessary for the relying party's server.
... }, user: { id: new uint8array(16) /* from the server */, name: "jdoe@example.com", displayname: "john doe" }, pubkeycredparams: [ { type: "public-key", alg: -7 } ] }; navigator.credentials.create({ publickey: options }) .then(function (pubkeycredential) { var response = pubkeycredential.response; var clientextresults = pubkeycredential.getclientextensionresults(); // send response and client extensions to the server so that it can validate // and create credentials }).catch(function (err) { // deal with any error }); specifications specification status comment web authentication: an api for accessing public key credentials level 1the definition of 'response' in that specification.

PublicKeyCredential - Web APIs
it inherits from credential, and was created by the web authentication api extension to the credential management api.
... methods publickeycredential.getclientextensionresults()secure context if any extensions were requested, this method will return the results of processing those extensions.
...*/, rp: { name: "example corp", id : "login.example.com" }, user: { id: new uint8array(16), name: "jdoe@example.com", displayname: "john doe" }, pubkeycredparams: [ { type: "public-key", alg: -7 } ] }; navigator.credentials.create({ publickey }) .then(function (newcredentialinfo) { var response = newcredentialinfo.response; var clientextensionsresults = newcredentialinfo.getclientextensionresults(); }).catch(function (err) { console.error(err); }); getting an existing instance of publickeycredential here, we fetch an existing credential from an authenticator, using navigator.credentials.get().

PublicKeyCredentialRequestOptions - Web APIs
publickeycredentialrequestoptions.extensions optional an object with several client extensions' inputs.
... those extensions are used to request additional processing (e.g.
... something like foo.example.com */ userverification: "preferred", timeout: 60000, // wait for a minute allowcredentials: [ { transports: "usb", type: "public-key", id: new uint8array(26) // actually provided by the server }, { transports: "internal", type: "public-key", id: new uint8array(26) // actually provided by the server } ], extensions: { uvm: true, // rp wants to know how the user was verified loc: false, txauthsimple: "could you please verify yourself?" } }; navigator.credentials.get({ "publickey": options }) .then(function (credentialinfoassertion) { // send assertion response back to the server // to proceed with the control of the credential }).catch(function (err) { console.error(err); })...

RTCRtpCapabilities - Web APIs
an rtcrtpcapabilities object contains an array of objects conforming to rtcrtpcodeccapability (each describing the capabilities of one codec) and an array of the supported rtp header extensions for that codec.
... headerextensions an array of objects conforming to the rtcrtpheaderextensioncapability dictionary.
... each object contains a single domstring, uri, specifying the uri of the header extension, as described in rfc 5285.

SVGTests - Web APIs
svgtests.requiredextensions read only an svgstringlist corresponding to the requiredextensions attribute of the given element.
... methods svgtests.hasextension() read only returns true if the browser supports the given extension, specified by a uri.
... candidate recommendation removed requiredfeatures property and hasextension() method.

WebGLRenderingContext.getFramebufferAttachmentParameter() - Web APIs
_attachment2 gl.color_attachment3 gl.color_attachment4 gl.color_attachment5 gl.color_attachment6 gl.color_attachment7 gl.color_attachment8 gl.color_attachment9 gl.color_attachment10 gl.color_attachment11 gl.color_attachment12 gl.color_attachment13 gl.color_attachment14 gl.color_attachment15 when using the webgl_draw_buffers extension: ext.color_attachment0_webgl (same as gl.color_attachment0) ext.color_attachment1_webgl ext.color_attachment2_webgl ext.color_attachment3_webgl ext.color_attachment4_webgl ext.color_attachment5_webgl ext.color_attachment6_webgl ext.color_attachment7_webgl ext.color_attachment8_webgl ext.color_attachment9_webgl ext.color_attachment10_webgl ...
... when using the ext_srgb extension: ext.framebuffer_attachment_color_encoding_ext: the framebuffer color encoding.
..._attachment_alpha_size gl.framebuffer_attachment_blue_size gl.framebuffer_attachment_color_encoding gl.framebuffer_attachment_component_type gl.framebuffer_attachment_depth_size gl.framebuffer_attachment_green_size gl.framebuffer_attachment_red_size gl.framebuffer_attachment_stencil_size gl.framebuffer_attachment_texture_layer when using the ovr_multiview2 extension: ext.framebuffer_attachment_texture_num_views_ovr: the number of views of the framebuffer object attachment.

WebGLRenderingContext.renderbufferStorage() - Web APIs
gl.depth_stencil when using a webgl 2 context, the following values are available additionally: gl.r8 gl.r8ui gl.r8i gl.r16ui gl.r16i gl.r32ui gl.r32i gl.rg8 gl.rg8ui gl.rg8i gl.rg16ui gl.rg16i gl.rg32ui gl.rg32i gl.rgb8 gl.rgba8 gl.srgb8_alpha8 (also available as an extension for webgl 1, see below) gl.rgb10_a2 gl.rgba8ui gl.rgba8i gl.rgb10_a2ui gl.rgba16ui gl.rgba16i gl.rgba32i gl.rgba32ui gl.depth_component24 gl.depth_component32f gl.depth24_stencil8 gl.depth32f_stencil8 when using the webgl_color_buffer_float extension: ext.rgba32f_ext: rgba 32-bit floating-point type.
... when using the ext_srgb extension: ext.srgb8_alpha8_ext: 8-bit srgb and alpha.
... when using a webgl 2 context and the ext_color_buffer_float extension: gl.r16f gl.rg16f gl.rgba16f gl.r32f gl.rg32f gl.rgba32f gl.r11f_g11f_b10f width a glsizei specifying the width of the renderbuffer in pixels.

WebGL: 2D and 3D graphics for the web - Web APIs
reference standard interfaces webglrenderingcontext webgl2renderingcontext webglactiveinfo webglbuffer webglcontextevent webglframebuffer webglprogram webglquery webglrenderbuffer webglsampler webglshader webglshaderprecisionformat webglsync webgltexture webgltransformfeedback webgluniformlocation webglvertexarrayobject extensions angle_instanced_arrays ext_blend_minmax ext_color_buffer_float ext_color_buffer_half_float ext_disjoint_timer_query ext_float_blend ext_frag_depth ext_srgb ext_shader_texture_lod ext_texture_compression_bptc ext_texture_compression_rgtc ext_texture_filter_anisotropic khr_parallel_shader_compile oes_element_index_uint oes_fbo_render_mipmap oes_standard_derivatives oes_textur...
...it is based on opengl es 3.0 and new features include: 3d textures, sampler objects, uniform buffer objects, sync objects, query objects, transform feedback objects, promoted extensions that are now core to webgl 2: vertex array objects, instancing, multiple render targets, fragment depth.
... using extensions a guide to using webgl extensions.

Viewpoints and viewers: Simulating cameras in WebXR - Web APIs
virtual cameras in webgl (and by extension, in webxr), there is no camera object we can move and rotate, so we have to find a way to fake these movements.
... by extension, if you and another person are standing in an empty field of solid stone with nothing else visible as far as the eye can see, if you move three meters toward the other person, the result looks the same as if the other person had moved three meters toward you.
...by comparing the two views, it's possible to recognize the depth of objects and, by extension, the distance between the viewer and objects which are seen.

Web Animations API - Web APIs
extensions to other interfaces the web animations api adds some new features to document and element.
... extensions to the document interface document.timeline the documenttimeline object representing the default document timeline.
... extensions to the element interface element.animate() a shortcut method for creating and playing an animation on an element.

Window.open() - Web APIs
some advanced extensions also give mozilla and firefox a lot of power over how referenced resources are loaded.
... users can be using browser-built-in feature or extensions include opening a link in a new window or not, in the same window, in a new tab or not, in "background" or not.
...middle-click on links, ctrl+click on links, tab-browsing features in extensions, etc.

window.postMessage() - Web APIs
using window.postmessage in extensions window.postmessage is available to javascript running in chrome code (e.g., in extensions and privileged code), but the source property of the dispatched event is always null as a security restriction.
... (the other properties have their expected values.) it is not possible for content or web context scripts to specify a targetorigin to communicate directly with an extension (either the background script or a content script).
... web or content scripts can use window.postmessage with a targetorigin of "*" to broadcast to every listener, but this is discouraged, since an extension cannot be certain the origin of such messages, and other listeners (including those you do not control) can listen in.

Accessibility: What users can do to browse more safely - Accessibility
to reverse it, you will have to change the value back to "normal" use browser extensions gif blocker for chrome, gif blocker is an extension available at the web store.
... gif scrubber gif scrubber is a chrome extension that allows you to control gifs like a video player.
... there is a github repository for it at https://github.com/0ui/gif-scrubber beeline reader beeline reader has a browser extension that allows you to set up for grayscale and dyslexi font, among other things take advantage operating system accessibility features most operating systems such as windows 10, have accessibility options that are surprisingly powerful.

Accessibility Information for Web Authors - Accessibility
html advanced validator (firefox extension) by marc gueury this html validator (based on w3c tidy and on opensp for sgml validation) is a powerful, versatile, extended html validator.
... this html advanced validator firefox extension is very resourceful and highly customizable.
... it's an extension add-on to firefox 2.x and firefox 3.x.

:-moz-locale-dir(ltr) - CSS: Cascading Style Sheets
the :-moz-locale-dir(ltr) css pseudo-class is a mozilla extension that matches an element if the user interface is being displayed left-to-right.
... note: this selector is mainly used by extensions and themes to adapt the user interface based on the user's locale.
... (this can vary from window to window, and even from tab to tab.) it also allows extensions to work even when they don't support the user's default locale, since they can support both left-to-right and right-to-left layouts regardless of locale specifics.

:-moz-locale-dir(rtl) - CSS: Cascading Style Sheets
the :-moz-locale-dir(rtl) css pseudo-class is a mozilla extension that matches an element if the user interface is being displayed right-to-left.
... note: this selector is mainly used by extensions and themes to adapt the user interface based on the user's locale.
... (this can vary from window to window, and even from tab to tab.) it also allows extensions to work even when they don't support the user's default locale, since they can support both left-to-right and right-to-left layouts regardless of locale specifics.

Live streaming web audio and video - Developer guides
for example: <video src="rtsp://myhost.com/mymedia.format"> <!-- fallback here --> </video> media source extensions (mse) media source extensions is a w3c working draft that plans to extend htmlmediaelement to allow javascript to generate media streams for playback.
...it is supported via media source extensions which are used by javascript libraries such as dash.js.
... also http live streaming hls browser support http live streaming javascript player the basics of http live streaming dash adaptive streaming for html 5 video dynamic adaptive streaming over http (mpeg-dash) mpeg-dash media source demo dash reference client dynamic streaming over http the state of mpeg-dash deployment look, no plugins: live streaming to the browser using media source extensions and mpeg-dash media source extensions (w3c) icecast shoutcast gstreamer streaming gstreamer pipelines via http streaming media using gstreamer on the web gstreamer and raspberry pi acceptance of media source extensions as w3c candidate recommendation will accelerate adoption of dash.js comparison of streaming media systems mozilla hacks - streaming media on demand with media source ext...

Audio and Video Delivery - Developer guides
media source extensions (mse) media source extensions is a w3c working draft that plans to extend htmlmediaelement to allow javascript to generate media streams for playback.
... encrypted media extensions (eme) encrypted media extensions is a w3c proposal to extend htmlmediaelement, providing apis to control playback of protected content.
... # addtype type/subtype extension addtype audio/mpeg mp3 addtype audio/mp4 m4a addtype audio/ogg ogg addtype audio/ogg oga addtype video/mp4 mp4 addtype video/mp4 m4v addtype video/ogg ogv addtype video/webm webm addtype video/webm webmv 2.

HTML attribute: accept - HTML: Hypertext Markup Language
each unique file type specifier may take one of the following forms: a valid case-insensitive filename extension, starting with a period (".") character.
... a valid mime type string, with no extensions.
... acceptable file types can be specified with the accept attribute, which takes a comma-separated list of allowed file extensions or mime types.

<input type="file"> - HTML: Hypertext Markup Language
each unique file type specifier may take one of the following forms: a valid case-insensitive filename extension, starting with a period (".") character.
... a valid mime type string, with no extensions.
... acceptable file types can be specified with the accept attribute, which takes a comma-separated list of allowed file extensions or mime types.

<input type="search"> - HTML: Hypertext Markup Language
autocorrect a safari extension, the autocorrect attribute is a string which indicates whether or not to activate automatic correction while the user is editing this field.
... incremental the boolean attribute incremental is a webkit and blink extension (so supported by safari, opera, chrome, etc.) which, if present, tells the user agent to process the input as a live search.
... mozactionhint a mozilla extension, supported by firefox for android, which provides a hint as to what sort of action will be taken if the user presses the enter or return key while editing the field.

<video>: The Video Embed element - HTML: Hypertext Markup Language
if you use apache web server to serve ogg theora videos, you can fix this problem by adding the video file type extensions to "video/ogg" mime type.
... the most common video file type extensions are ".ogm", ".ogv", or ".ogg".
... addtype video/ogg .ogm addtype video/ogg .ogv addtype video/ogg .ogg if you serve your videos as webm, you can fix this problem for the apache web server by adding the extension used by your video files (".webm" is the most common one) to the mime type "video/webm" via the "mime.types" file in "/etc/apache" or via the "addtype" configuration directive in httpd.conf.

Resource URLs - HTTP
resource urls, urls prefixed with the resource: scheme, are used by firefox and firefox browser extensions to load resources internally, but some of the information is available to sites the browser connects to as well.
... in the past, web content was able to access whatever resource: uris were desired — not only firefox’s internal resources, but also extensions’ assets.
... note: it is recommended that web and extension developers don’t try to use resource urls anymore.

Cache-Control - HTTP
cache-control: must-revalidate cache-control: no-cache cache-control: no-store cache-control: no-transform cache-control: public cache-control: private cache-control: proxy-revalidate cache-control: max-age=<seconds> cache-control: s-maxage=<seconds> extension cache-control directives extension cache-control directives are not part of the core http caching standards document.
...clients that aren't aware of this extension must ignore them as per the http specification.
... cache-control: no-cache cache-control: no-cache, max-age=0 specifications specification status comment rfc 8246: http immutable responses ietf rfc rfc 7234: hypertext transfer protocol (http/1.1): caching ietf rfc rfc 5861: http cache-control extensions for stale content ietf rfc initial definition ...

Firefox user agent string reference - HTTP
your distribution of linux might include an extension that changes your user-agent.
...ws mozilla/5.0 (windows nt 5.2; rv:10.0.1) gecko/20100101 firefox/10.0.1 seamonkey/2.7.1 seamonkey on mac mozilla/5.0 (macintosh; intel mac os x 10.5; rv:10.0.1) gecko/20100101 firefox/10.0.1 seamonkey/2.7.1 seamonkey on linux mozilla/5.0 (x11; linux i686; rv:10.0.1) gecko/20100101 firefox/10.0.1 seamonkey/2.7.1 implementation notes for applications, vendors, and extensions prior to firefox 4 and gecko 2.0, it was possible for extensions to add user agent parts through the general.useragent.extra.identifier preferences, (see the obsolete user agent strings reference).
... in the past, specific plug-ins, add-ons or extensions added user agent parts to notify sites they were installed.

Intl.Collator.prototype.resolvedOptions() - JavaScript
if any unicode extension values were requested in the input bcp 47 language tag that led to this locale, the key-value pairs that were requested and are supported for this locale are included in locale.
... collation the value requested using the unicode extension key "co", if it is supported for locale, or "default".
... numeric casefirst the values requested for these properties in the options argument or using the unicode extension keys "kn" and "kf" or filled in as defaults.

Object - JavaScript
object.preventextensions() prevents any extensions of an object.
...ject(undefined) let o = new object(null) using object to create boolean objects the following examples store boolean objects in o: // equivalent to o = new boolean(true) let o = new object(true) // equivalent to o = new boolean(false) let o = new object(boolean()) object prototypes when altering the behavior of existing object.prototype methods, consider injecting code by wrapping your extension before or after the existing logic.
... for example, this (untested) code will pre-conditionally execute custom logic before the built-in logic or someone else's extension is executed.

Web video codec guide - Web media technologies
files of this type should have the extension .mp4v, but sometimes are inaccurately labeled .mp4.
... [2] edge supports theora with the optional web media extensions add-on.
... container support 3gp, ogg, webm rtp / webrtc compatible yes; vp8 is one of the spec-required codecs for webrtc supporting/maintaining organization google specification rfc 6386 licensing open and free of royalties and any other licensing requirements [1] edge support for vp8 requires the use of media source extensions.

SVG documentation index - SVG: Scalable Vector Graphics
369 <switch> element, needsexample, svg, svg container the <switch> svg element evaluates any requiredfeatures, requiredextensions and systemlanguage attributes on its direct child elements in order, and then renders the first child where these attributes evaluate to true.
...this page lists those deviations/extensions and our reasoning for them.
... 383 mimetypes.rdf corruption svg this page explains a problem that can cause svg to stop working in mozilla due to the way mozilla maps filename extensions to media types.

SDK and XUL Comparison - Archive of obsolete content
we also expect to support both desktop and mobile firefox using a single edition of the sdk: so you'll be able to write one extension and have it work on both products.
...if you need more flexibility than the sdk's high-level apis provide, you can use its low-level apis to load xpcom objects directly or to manipulate the dom directly as in a traditional bootstrapped extension.

XUL Migration Guide - Archive of obsolete content
in this way an extension can integrate its user interface into the browser: for example, adding menu items, buttons, and toolbars.
... because sdk-based extensions are restartless, they can't use xul overlays.

context-menu - Archive of obsolete content
if the total number of menu items in the main context menu from all add-ons exceeds a certain number (normally 10 but configurable with the extensions.addon-sdk.context-menu.overflowthreshold preference) all of the menu items will instead appear in an overflow menu to avoid making the context menu too large.
...the difficult part it to identify those that belong to your extension.

Getting started (cfx) - Archive of obsolete content
to build an xpi, just execute the command cfx xpi from the add-on's directory: cfx xpi you should see a message like: exporting extension to my-addon.xpi.
...an alternative development model is to use the extension auto-installer add-on: this listens for new xpi files on a specified port and installs them automatically.

HTML to DOM - Archive of obsolete content
however, there are potential dangers involved in injecting remote content in a privileged context in your extension, so it can be desirable to parse the html safely.
... <vbox hidden="false" height="0"> <iframe type="content" src="" name="donkey-browser" hidden="false" id="donkey-browser" height="0"/> </vbox> then, in your extension's "load" event handler: onload: function() { donkeybrowser = document.getelementbyid("donkey-browser"); if (donkeybrowser) { donkeybrowser.style.height = "0px"; donkeybrowser.webnavigation.allowauth = true; donkeybrowser.webnavigation.allowimages = false; donkeybrowser.webnavigation.allowjavascript = false; donkeybrowser.webnavigation.allowmetaredirects = true; donkeybrowser.webnav...

Code snippets - Archive of obsolete content
this is a quick list of useful code snippets (small code samples) available for developers of extensions for the various mozilla applications.
...er-oriented code tabbed browser code (firefox/seamonkey) basic operations, such as page loading, with the tabbed browser, which is the heart of mozilla's browser applications cookies reading, writing, modifying, and removing cookies page loading code used to load pages, reload pages, and listen for page loads interaction between privileged and non-privileged code how to communicate from extensions to websites and vice-versa.

Hiding browser chrome - Archive of obsolete content
there are times in which an extension may find it useful to hide browser chrome (that is, toolbars, the location bar, and so forth), in order to reduce clutter when presenting a particular user interface.
...note: don't simply replace the hidechromeforlocation() method; this will likely hurt the functionality of firefox itself as well as other extensions.

Migrating raw components to add-ons - Archive of obsolete content
the firefox extension mechanism allows you to do everything that you could do through direct component drops, but also gives you and your users extra flexibility and more sophisticated versioning support.
...simple migration if your goal is just to get your raw component working properly as an extension, you can do this in three steps: create a new add-on using the instructions here.

Offering a context menu for form controls - Archive of obsolete content
this article describes how an extension can override this change in a particular window, enabling context menus to work on form controls.
... this article presents information based on ehsan akhgari's form control context menu extension, which was created specifically to demonstrate how to do this.

Firefox addons developer guide - Archive of obsolete content
the firefox add-ons developer guide was contributed by the mozilla japan community; it covers how to go about building firefox extensions using xpcom and xul.
... next » introduction to extensions technologies used in developing extensions introduction to xul—how to build a more intuitive ui using xpcom—implementing advanced processes let's build a firefox extension firefox extensions and xul applications license and authors next » ...

Adding sidebars - Archive of obsolete content
keyboard shortcuts are an essential feature of firefox, and you can add your own into your extensions, which is also great.
...to sum up both of these references: you can choose an obscure key combination that won't conflict with firefox, such as ctrl+shift+(some letter), but there's no way of knowing if any other extension uses that same combination as well.

Observer Notifications - Archive of obsolete content
getservice(components.interfaces.nsiobserverservice); observerservice.addobserver(testobserver, "xulschoolhello-test-topic", false); you should come up with a notification topic that is unique so you know it will not conflict with firefox or other extensions topics.
... /** * controls the browser overlay for the hello world extension.

User Notifications and Alerts - Archive of obsolete content
« previousnext » it is often the case that extensions need to notify users about important events, often requiring some response.
...imagine having multiple extensions notifying you in their own custom way, probably even at the same time!

XUL School Tutorial - Archive of obsolete content
xul school is a comprehensive add-on development tutorial, focusing on firefox extension development.
... introduction introduction getting started with firefox extensions the essentials of an extension setting up a development environment javascript object management basic functionality adding menus and submenus adding toolbars and toolbar buttons adding events and commands adding windows and dialogs adding sidebars user notifications and alerts intermediate functionality intercepting page loads connecting to remote content handling preferences local storage advanced topics the box model xpcom objects observer notifications custom xul elements with xbl mozilla documentation...

Using the Stylesheet Service - Archive of obsolete content
the stylesheet service allows extensions to manage user and ua stylesheets without having to touch usercontent.css or userchrome.css files.
... determining whether a sheet has been loaded if you are writing an extension and adding your stylesheet in an onload handler, you'll want to see if your sheet has already been added.

Installing plugins to Gecko embedding browsers on Windows - Archive of obsolete content
example: netscape 6 6.1\ look at the extensions subkey, e.g.
... hkey_local_machine\software\mozilla\netscape 6 6.1\extensions\ access the plugins value and value-data pair, e.g: plugins = c:\program files\netscape\netscape 6\plugins.

Using content preferences - Archive of obsolete content
this permits code running within chrome (in other words: extensions and the browser itself, not web sites) to locally save preferences on a per-site basis.
... this makes it possible to write an extension that lets the user customize the appearance of specific web sites (setting the font size larger on sites that use obnoxiously small fonts, for instance).

Building TransforMiiX standalone - Archive of obsolete content
this will pull the necessary subtree with mozilla/client.mk mozilla/build/unix/modules.mk mozilla/build mozilla/config mozilla/expat mozilla/extensions/transformiix mozilla/include mozilla/allmakefiles.sh mozilla/client.mk mozilla/aclocal.m4 mozilla/configure mozilla/configure.in mozilla/makefile.in plus nspr and xpcom from the cvs repository.
... the binary transformiix(.exe) will be in extensions/transformiix/source and dist/bin/ (symbolic link).

Compiling The npruntime Sample Plugin in Visual Studio - Archive of obsolete content
file extension reflects the data type handled by the plugin, esp.
... optional: open the above .def file and change "nprt" to the filename of your dll as vs sees it (without "np", if you decided to rename later) optional: edit the .rc file and and the top of npp_gate.cpp for the description, mimetype, file extension etc.

Adding the structure - Archive of obsolete content
« previousnext » the ui for our extension is an icon in the status bar.
... the status attribute is not part of the xul definition for the statusbarpanel element, but is used by our extension to store the current tinderbox state.

Making a Mozilla installation modifiable - Archive of obsolete content
although mozilla stores the ui files in jar archives, it can also access them in their original, unarchived form, which is useful for the extensions developer because it makes it unnecessary to extract the files from the archive before changing the code and then re-add them to the archive afterwards.
...use your unzip utility to extract all files in that directory with a .jar extension.

Creating a Microsummary - Archive of obsolete content
the easiest way to get an xpath expression that points to the node in question is to use the xpath checker extension.
... install the extension (restarting firefox to complete installation) then go to the spread firefox home page, find the firefox download count (a large number at the bottom of the right-hand column), context click on the number, and select view xpath from the context menu.

Creating a Skin for Firefox/Getting Started - Archive of obsolete content
be sure to install the dom inspector extension as well.
... skin\classic\mozapps mozapps contains all the styles and icons for the browser peripherals, such as the extension manager or update wizard.

Download Manager improvements in Firefox 3 - Archive of obsolete content
download manager interfaces nsidownloadmanager gives applications and extensions access to the download manager, allowing them to add and remove files to the download list, retrieve information about past and present downloads, and request notifications as to the progress of downloads.
... nsidownloadprogresslistener applications and extensions implement this interface to be made aware of changes in the status of downloads.

Syncing custom preferences - Archive of obsolete content
for example, if your add-on had a pref called extension.frobnaz.foobar, to have it synced, create a bool preference called services.sync.prefs.sync.extension.frobnaz.foobar and set it to true.
...see adding_preferences_to_an_extension.

generateCRMFRequest() - Archive of obsolete content
warning: the features mentioned in this article are deleted proprietary mozilla extensions, and are not supported in any other browser.
...acceptable values are (the mentioned values for keyusage pertain to the keyusage value of the certificate extension that will ultimately be in the issued certificate): "rsa-ex" - generate an rsa key for key exchange only (this will have eyencipherment set for keyusage.) "rsa-dual-use" - generate a single rsa key for both signing and encryption.

Microsummary topics - Archive of obsolete content
warning: microsummary support was removed in gecko 6.0 (firefox 6.0 / thunderbird 6.0 / seamonkey 2.3) programmatically installing a microsummary generator to programmatically install a microsummary generator -- for example, in an extension that helps users create custom generators for their favorite sites -- obtain a reference to the nsimicrosummaryservice interface implemented by the nsimicrosummaryservice component, then call its installgenerator() method, passing it an xml document containing the generator.
...you may also use another form appropriate to your extension.

Bundles - Archive of obsolete content
a bundle can also be installed from firefox via the prism extension for firefox.
... the extension looks for <link> tags in the webpage that point to a webapp bundle: <link rel="webapp" href="prismdemo.webapp" title="prism demo"> when the extension finds such a <link> tag, it will notify the user.

Scripting - Archive of obsolete content
this file will be loaded into the prism chrome window very much like a firefox extension is loaded into the browser chrome window.
...currently, the webapp script also has access to full xpcom functionality, just like a firefox extension.

Actionscript Acceptance Tests - Archive of obsolete content
files to be included when compiling the test: if a test requires additional .as files to be included when compiling, a directory with the same name as the test (minus any extension) can be created.
... the directory name should not include any testname extensions.

Using Breakpoints in Venkman - Archive of obsolete content
(note: by default, venkman hides files file that appear to be part of the browser core; this includes extensions.
... to debug an extension, uncheck "exclude browser files" on the debug menu and your installed extension files should appear in the loaded scripts list.) venkman also indicates that one or more breakpoints have been set in the loaded scripts view, where red dots appear next to the files in which breakpoints have been set, along with the line number where the function begins whose code is being stopped.

When To Use ifdefs - Archive of obsolete content
the only time when they might be a problem is in cross-platform extension code and locales: since this code is downloaded on multiple platforms, platform-specific ifdefs are generally out of the question.
...for example (at the time of writing) there are two nsiextensionmanager interfaces: toolkit version and suite version.

Methods - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

File Object - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

InstallVersion Object - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

Methods - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

Properties - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

Install Object - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

Methods - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

WinProfile Object - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

Methods - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

WinReg Object - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

XPInstall API reference - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

Learn XPI Installer Scripting by Example - Archive of obsolete content
extension, theme, and plug-in developers must switch away from install.js based packages to the new packaging scheme with an install.rdf manifest.
... in particular plugin developers should see how to package a plugin as an extension.

treecol.type - Archive of obsolete content
cbox-check.gif isn't available in firefox 1, 2, and 3 in mac os x so you should specify a url to an image in your extension or elsewhere.
...cbox-check.gif isn't available in firefox 1, 2, and 3 in mac os x, so you should specify a url to an image in your extension or elsewhere.

Accessing Files - Archive of obsolete content
this is a convenient location where an extension might save a file it needs to use.
...var file = io.getfile("profile", "sample.txt"); the nsiscriptableio object is a global object always available within an application or extension which provides a number of useful functions for dealing with files.

IO - Archive of obsolete content
using files a xul application or extension may access files on disk, and either read or write to files.
...var file = io.getfile("profile", "sample.txt"); the nsiscriptableio object is a global object always available within an application or extension.

Menus - Archive of obsolete content
an extension will often wish to attach a new command to a menu.
...for more information about how to use an overlay to modify a menu, see using menus and popups in extensions the following tables list the ids of menus in firefox that are commonly overlaid upon.

Providing Command-Line Options - Archive of obsolete content
extensions and xul applications can modify the way command line parameters are handled by writing a component that implements the nsicommandlinehandler interface and registering it in a category.
...pp {2991c315-b871-42cd-b33f-bfee4fcbf682} category command-line-handler m-myapp @mozilla.org/commandlinehandler/general-startup;1?type=myapp the javascript code const cc = components.classes; const ci = components.interfaces; components.utils.import("resource://gre/modules/xpcomutils.jsm"); components.utils.import("resource://gre/modules/services.jsm"); // changeme: to the chrome uri of your extension or application const chrome_uri = "chrome://myapp/content/"; /** * utility functions */ /** * opens a chrome window.

Creating a Window - Archive of obsolete content
creating a xul file an xul file can be given any name but it really should have a .xul extension.
... the extension developer's extension contains an xul editor that allows you to type in xul code and see the results in real-time from within mozilla!

RDF Datasources - Archive of obsolete content
extension http://home.netscape.com/nc-rdf#extension the extension of the file, including the period.
... this property is only available on platforms that use file extensions.

Skinning XUL Files by Hand - Archive of obsolete content
finally, mozilla provides some special extensions to the cascading style sheets specification that allow even more control over the way that xul is skinned within the browser.
... a css file is a regular text file with the extension .css.

The Chrome URL - Archive of obsolete content
for content, a file with the same name of the package and a xul extension is selected.
...of course, for extensions that modify the browser interface, the user will not need to know the url, as the extension will present itself in the ui.

Using multiple DTDs - Archive of obsolete content
single dtd to make strings in your xul file localizable, you normally add a dtd declaration at the beginning of the file like this: <!doctype window system "chrome://myextension/locale/mainwindow.dtd"> where "window" is the local name of the document (root) element.
... assuming you have an entity called somebutton.label defined in mainwindow.dtd, you can access the entity like this: <button id="somebutton" label="&somebutton.label"> multiple dtds if you want to use multiple dtds with your xul file, you can simply list all of the dtds inside your dtd declaration: <!doctype window [ <!entity % commondtd system "chrome://myextensions/locale/common.dtd"> %commondtd; <!entity % mainwindowdtd system "chrome://myextension/locale/mainwindow.dtd"> %mainwindowdtd; ]> you can now access the entities declared in the dtds as shown above.

XUL FAQ - Archive of obsolete content
other faqs you may be interested in: extension faq, ...
...ted mielczarek's live xul editor (also part of extension developer's extension) often proves useful.

XUL Questions and Answers - Archive of obsolete content
as an extension author, you have at least two options: use dom methods to dynamically create or rearrange elements file an enhancement request in bugzilla to have extra ids added.
...for more information please look at the following link: nsextensionmanager.js is nsivariant fully supported using python?

tree - Archive of obsolete content
cbox-check.gif isn't available in firefox 1, 2, and 3 in mac os x so you should specify a url to an image in your extension or elsewhere.
...cbox-check-dis.gif isn't available in firefox 1, 2, and 3 in mac os x, so you should specify a url to an image in your extension or elsewhere.

window - Archive of obsolete content
<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" xmlns:html="http://www.w3.org/1999/xhtml"> <!-- icon from chrome --> <html:link rel="icon" href="chrome://myextension/content/path/to/favicon.png"/> <!-- from a remote site --> <html:link rel="icon" href="http://www.mozilla.org/favicon.ico"/> since firefox 3.6 the above listed code does not work correctly - it produces the following message: "warning: xul box for box element contained an inline link child, forcing all its children to be wrapped in a block".
...the problem can be solved as follows: <html:link rel="icon" href="chrome://myextension/content/path/to/favicon.png" style="display:none"/> or <html:head> <html:link rel="icon" href="chrome://myextension/content/path/to/favicon.png"/> </html:head> ...

XUL - Archive of obsolete content
mailing list newsgroup rss feed #xul on irc.mozilla.org tools xul online live editor (copy & paste snippets from here and run them) xul explorer (a lightweight xul ide) xulexplorer (patched version of xul explorer) extension developer's extension (featuring a live xul editor) xulref sidebar firebug dom inspector spket ide, ide for xul/xbl ample sdk, (cross-browser xul renderer in javascript/html) view all...
... related topics javascript, xbl , css, rdf, extensions, xulrunner ...

What XULRunner Provides - Archive of obsolete content
extension manager file picker (uses native os filepicker as appropriate) find toolbar helper app dialog/ui security ui (maintenance of ssl keychains, etc) embedding apis the following embedding apis are provided by xulrunner: cross-platform embedding (xre_initembedding) javaxpcom embedding gtkmozembed (linux only) activex control (windows only) (not yet complete) obsolete since gecko 7.0 ...
... what's out xulrunner will not supply: bookmarks or history ui (must be managed by the application/embedder) xforms (xforms will be available as an extension) ...

calICalendarView - Archive of obsolete content
note that in most cases, this attribute will be set by the consumers of calicalendarview very early in an application/extension's loading process.
...implementations should therefore be wary to check whether a controller has been assigned to the view, before calling any of the methods it implements.note that in most cases, this attribute will be set by the consumers of calicalendarview very early in an application/extension's loading process.

Gecko Compatibility Handbook - Archive of obsolete content
or, if you are using user-agent detection, you can install an extension in firefox or mozilla which allows you to "spoof" the user-agent strings of the various gecko browsers.
... install the user agent switcher extension.

2006-10-20 - Archive of obsolete content
how to create firefox extension (chrome) to add images next to urls ?
... question regarding how to make a firefox extension that would insert an image next to all links in the loaded web pages similar to the mcafee siteadvisor extension.

2006-11-03 - Archive of obsolete content
cross-product extension install improvements simon paquet points out how much easier it is to install an extension in firefox than it in any other product.
... a discussion of how to get firefox to be able to install extensions for other products (e.g.

2006-09-29 - Archive of obsolete content
discussions extension based testing - someone is in the process of writing a small extension that tests firefox's help in terms of table-of-contents and search looking for firefox triagers to evaluate a triage tool - a phd student is working on a way to assist triagers.
... help testing helper extension - someone made a new extension.

JS-Engine FAQ - Archive of obsolete content
check the jsval macros at the top of js/src/jsapi.h can an embedded spidermonkey js engine use domparser extension of mozilla?
... non-js-engine questions can i call functions in mozilla extensions from web page?

2006-12-01 - Archive of obsolete content
a tip on how to debug firefox extensions using a debugger.
... segmentation fault while running the browser browser crashes after installation of subjects extension.

External resources for plugin creation - Archive of obsolete content
project: juce project home page description (from the home page): juce (jules' utility class extensions) is an all-encompassing c++ class library for developing cross-platform applications.
... firefox plugin - part one: discusses the difference between npapi and npruntime and summarizes the basic apis needed to create a plugin building a firefox plugin - part two: discusses the basic lifecycle of a npapi plugin building a firefox plugin - part three: discusses npobjects and how to use them memory management in npapi: discusses how memory is managed in a npapi plugin browser plugins vs extensions (add-ons) -- the difference: discusses the oft-misunderstood difference between a plugin and an extension wikipedia npapi: history and general information about npapi plugins and extensions: the general difference between them boom swagger boom writing an npapi plugin for mac os x ...

SAX - Archive of obsolete content
starting with firefox 2, a sax parser is available to xul applications and extensions.
... nsisaxlexicalhandler sax2 extension handler for lexical events (e.g.

Common Firefox theme issues and solutions - Archive of obsolete content
to accomplish this copy the file chrome://mozapps/skin/extensions/extensions.svg from the default theme into the mozapps/extensions/ folder of your theme and add the following style rule to the css file extensions.css: .addon[active="false"] .icon { filter: url("chrome://mozapps/skin/extensions/extensions.svg#greyscale"); opacity:0.3; } about:memory about:memory nodes do not collapse the styling of about:memory is a little messed up in that nodes do not...
...if you are using the extension console² you can easily filter out content related messages to see just chrome issues.

Using Firebug and jQuery (Screencast) - Archive of obsolete content
we're going to take an introductory look at the firebug firefox extension and the jquery javascript library - combining the two to build a reusable bookmarklet that can manipulate digg posts and comments.
... related links: firebug firefox extension jquery javascript library jquery selector documentation digg learning jquery: jquerify bookmarklet if you wish to use greasemonkey instead of a bookmarklet, then by all means, please do so.

-ms-accelerator - Archive of obsolete content
the -ms-accelerator css property is a microsoft extension that sets or retrieves a string indicating whether the object represents a keyboard shortcut.
... in internet explorer 8 (ie8) the -ms-accelerator attribute is an extension to css, and can be used as a synonym for accelerator in ie8 standards mode.

-ms-filter - Archive of obsolete content
the -ms-filter css property is a microsoft extension that sets or retrieves the filter or collection of filters applied to an object.
...sed alternatives: dx filter standards-based alternative alpha opacity alphaimageloader <img> or background-image and related properties gradient background-image: linear-gradient() dropshadow text-shadow or box-shadow matrix transform, transform-origin in windows internet explorer 8, the -ms-filter attribute is an extension to css, and can be used as a synonym for filter in ie8 standards mode.

-ms-ime-align - Archive of obsolete content
the -ms-ime-align css property is a microsoft extension aligning the input method editor (ime) candidate window box relative to the element on which the ime composition is active.
... the extension is implemented in microsoft edge and internet explorer 11.

-ms-text-autospace - Archive of obsolete content
the -ms-text-autospace css property is a microsoft extension that specifies the autospacing and narrow space width adjustment of text.
... this property is an extension to css, and can be used as a synonym for text-autospace in ie8 standards mode.

Object.observe() - Archive of obsolete content
if omitted, the array ["add", "update", "delete", "reconfigure", "setprototype", "preventextensions"] will be used.
... object.defineproperty(obj, 'foo', {writable: false}); // [{name: 'foo', object: <obj>, type: 'reconfigure'}] object.setprototypeof(obj, {}); // [{name: '__proto__', object: <obj>, type: 'setprototype', oldvalue: <prototype>}] object.seal(obj); // [ // {name: 'foo', object: <obj>, type: 'reconfigure'}, // {name: 'bar', object: <obj>, type: 'reconfigure'}, // {object: <obj>, type: 'preventextensions'} // ] data binding // a user model var user = { id: 0, name: 'brendan eich', title: 'mr.' }; // create a greeting for the user function updategreeting() { user.greeting = 'hello, ' + user.title + ' ' + user.name + '!'; } updategreeting(); object.observe(user, function(changes) { changes.foreach(function(change) { // any time name or title change, update the greeting if (c...

LiveConnect - Archive of obsolete content
java in firefox extensions community view mozilla.dev.tech.java forums...
...ng list newsgroup rss feed related topics javascript, plugins older notes (please update or remove as needed.) while the bloated liveconnect code in the mozilla source was removed in version 1.9.2 of the platform (see bug 442399), its former api has been restored (see also the specification and this thread) (building on npapi?), and as of java 6 update 12, extensions as well as applets can make use of this restored api.

Old Proxy API - Archive of obsolete content
object.freeze(proxy) object.seal(proxy) object.preventextensions(proxy) fix: function() -> propertydescriptor map (indexed on property names) | undefined should return an object that maps property names to property descriptors.
...moreover, the respective method (freeze(), seal(), or preventextension()) is immediately called on the fixed object.

Back to the Server: Server-Side JavaScript On The Rise - Archive of obsolete content
server-side javascript (ssjs) via embedded javascript engines the extension of javascript to the server is made possible via embedded javascript engines.
... e4x (ecmascript for xml) is an extension of javascript which provides direct support for xml, greatly simplifying the process of consuming xml via javascript.

XForms Input Element - Archive of obsolete content
mozilla extensions labelposition - only for boolean types: show the label before or after the checkbox (see below) type restrictions the input element can be bound to a node containing simple content of any data type except xsd:base64binary, xsd:hexbinray or any data type derived from these.
...labelposition - a mozilla xforms extension in the namespace http://www.mozilla.org/projects/xfor...009/extensions.

Archived open Web documentation - Archive of obsolete content
e4x ecmascript for xml (e4x) is a programming language extension that adds native xml support to javascript.
...well if you combine the two, you can have inherited private variables: scope cheatsheet javascript with mozilla extensions has both function-scoped vars and block-scoped lets.

CalDAV - MDN Web Docs Glossary: Definitions of Web-related terms
caldav (calendaring extensions to webdav) is a protocol standardized by the ietf and used to remotely access calendar data from a server.
... learn more general knowledge caldav on wikipedia technical reference rfc 4791: calendaring extensions to webdav (caldav) rfc 6638: scheduling extensions to caldav ...

CardDAV - MDN Web Docs Glossary: Definitions of Web-related terms
carddav (vcard extension to webdav) is a protocol standardized by the ietf and used to remote-access or share contact information over a server.
... learn more general knowledge carddav on wikipedia technical reference rfc 6352: vcard extensions to web distributed authoring and versioning (webdav) ...

WebDAV - MDN Web Docs Glossary: Definitions of Web-related terms
webdav (web distributed authoring and versioning) is an http extension that lets web developers update their content remotely from a client.
... webdav is rarely used alone, but two extensions are very common: caldav (remote-access calendar) and carddav (remote-access address book).

CSS FAQ - Learn web development
these properties, called prefixed properties, are extensions to the css standard.
... note: see the mozilla css extensions page for more information on the mozilla-prefixed css properties.

Dealing with files - Learn web development
note: on windows computers, you might have trouble seeing the file names, because windows has an option called hide extensions for known file types turned on by default.
...option, unchecking the hide extensions for known file types check box, then clicking ok.

Getting started with React - Learn web development
note the use of ./ at the beginning of the path, and the .svg extension at the end — these tell us that the file is local and that it is not a javascript file.
... we don't write a path or extension when importing the react module — this is not a local file; instead, it is listed as a dependency in our package.json file.

Getting started with Svelte - Learn web development
svelte sticks closely to the classic web development model of html, css, and js, just adding a few extensions to html and javascript.
...extensions to the javascript language are minimal and carefully picked in order to not break javascript syntax nor alienate developers.

Command line crash course - Learn web development
although there's a great wealth of tools available from the command line, if you're using tools like visual studio code there's also a mass of extensions that can be used as a proxy to using terminal commands without needing to use the terminal directly.
... however, you won’t find a code editor extension for everything you want to do — you’ll have to get some experience with the terminal eventually.

Introducing a complete toolchain - Learn web development
tools used in our toolchain in this article we're going to use the following tools and features: jsx, a react-related set of syntax extensions that allow you to do things like defining component structures inside javascript.
... for vs code, one useful extension is the prettier code formatter by esben petersen, which lets vscode automatically format code upon saving.

A bird's-eye view of the Mozilla framework
thehelp viewer files referenced in the article are located in /seamonkey/extensions/help/ this article also assumes you are familiar with the javascript and c++ programming languages, object-oriented programming (oop) terminology and design concepts, the microsoft® component object model (com), and the corba omg interface definition language (idl).
...chrome and extensions are examples of packages.

Debugging JavaScript
in extensions you can print the callstack using components.stack like this: function getstackdump() { var lines = []; for (var frame = components.stack; frame; frame = frame.caller) { lines.push(frame.filename + " (" + frame.linenumber + ")"); } return lines.join("\n"); } see also debugging mozilla with gdb setting up an extension development environment (particularly development preference...
...s and development extensions) original document information author(s): ben bucksch created date: september 12, 2005, last updated date: november 10, 2009 copyright information: portions of this content are © 1998–2007 by individual mozilla.org contributors; content available under a creative commons license | details.

Debugging update problems
useful preferences enabling the following preferences in about:config can help troubleshoot problems with updates: app.update.log - for application updates; extensions.logging.enabled - for add-on updates.
... related resources extension versioning, update and compatibility.

HTTP logging
this is accomplished by splitting the log into up to 4 separate files (their filenames have a numbered extension, .0, .1, .2, .3) the logging back end cycles the files it writes to, while ensuring that the sum of these files’ sizes will never go over the specified limit.
... there's a handy extension for firefox called http header live that you can use to capture just the http request and response headers.

Simple Sunbird build
this will build the lightning extension into src/../objdir-sb/mozilla/dist/xpi-stage/.
...building just lightning after you have completed a full build, if you would like to rebuild lightning you don't need to go through the whole build process: # enter the calendar directory in the object-directory cd src/../objdir-sb-release/calendar # make the lightning extension make -c lightning references general build documentation comm-central ...

Reviewer Checklist
trailing whitespace (git diff and splinter view both highlight this, as does hg with the color extension enabled).
... whitespace can be fixed easily in mercurial using the checkfiles extension.

Cross Process Object Wrappers
for example, this frame script sends a dom node to chrome when the user clicks it, as the clicked property of the third argument: // frame script addeventlistener("click", function (event) { sendasyncmessage("my-e10s-extension-message", {}, { clicked : event.target }); }, false); in the chrome script, the dom node is now accessible through a cross process object wrapper, as a property of the objects property of the message.
... the chrome script can get and set the wrapped object's properties and call its functions: // chrome script windowmm.addmessagelistener("my-e10s-extension-message", handlemessage); function handlemessage(message) { let wrapper = message.objects.clicked; console.log(wrapper.innerhtml); wrapper.innerhtml = "<h2>modified by chrome!</h2>" wrapper.setattribute("align", "center"); } auto-generated cpows add-ons that have not declared themselves multiprocess compatible are set up with a number of compatibility shims.

Limitations of chrome scripts
for example: whenever extensions try to access web content from the chrome process, the browser will return a cross process object wrapper that gives the chrome code synchronous access to the content.
... however, these shims are not a substitute for migrating extensions: they are only a temporary measure, and will be removed eventually they can have a bad effect on responsiveness there are likely to be edge cases in which they don't work properly you can see all the places where your add-on uses compatibility shims by setting the dom.ipc.shims.enabledwarnings preference and watching the browser console as you use the add-on.

Message manager overview
in multiprocess firefox there are (at least) two processes: the chrome process, also called the parent process, runs the browser ui (chrome) code and code inserted by extensions one or more content processes, also called child processes.
...process scripts are most likely to be useful when an extension wants to run some code only once in the content process, to access some global service: for example, to register an observer or a content policy.

Browser API
the html browser api is an extension of the html <iframe> element that allows web apps to implement browsers or browser-like applications.
... api extensions: the api includes several new methods and events to manipulate and listen for changes to the embedded content's state, interited by the htmliframeelement interface.

How test harnesses work
the python harness communicates with the browser by inserting an extension in the testing profile or uses marionette's wire protocol to drive the browser.
... python runner the python runner: sets up the testing environment sets up environment variables (mozrunner, currently) creates a profile (mozprofile via mozrunner) sets appropriate test preferences inserts a shim extension in the profile (for non-marionette tests) gathers the tests (manifestdestiny) potentially sets up an http server for test data (mozhttpd) invokes the binary (mozrunner) it is the job of the shim extension to shut down the browser logging (mozlog, in theory) (run tests, accrue results) cleanup: shutdown the browser check for crashes (mozcrash) reporting (moztest) marionette tests list of testing extensions pageloader (talos) mochitest: //github.com/realityripple/uxp/blob/master/testing/mochitest/ins...

Integrated Authentication
the mozilla implementation of spnego can be found under extensions/auth/.
... it used to live in extensions/negotiateauth.

Code Samples
simply replace yourextensionid with your add-on's id.
... components.utils.import("resource://gre/modules/addonmanager.jsm"); addonmanager.getaddonbyid("yourextensionid", function(addon) { var addonlocation = addon.getresourceuri("").queryinterface(components.interfaces.nsifileurl).file.path; }); accessing file and version information components.utils.import("resource://gre/modules/addonmanager.jsm"); addonmanager.getaddonbyid("my-addon@foo.com", function(addon) { alert("my extension's version is " + addon.version); alert("did i remember to include that file.txt file in my xpi?

CustomizableUI.jsm
note: if your extension is compatible with versions of firefox below 29, i.e.
... parameters awindowpalette the palette (and by extension, the window) in which customizableui should look.

Download
launcherpath string local file path of the application to be used to launch the target file, or null if the file should be launched with the default application associated with the contenttype property or the extension of the target file.
...if the content type is not available, an attempt will be made to obtain it from the extension of the target file.

WebRequest.jsm
the webrequest api is modeled on chrome's webrequest extension api, which makes it easier to write cross-browser add-on code.
... "object" "xmlhttprequest" http headers https headers are represented as objects with two properties, name and value: name type description name string header name, for example "content-type" value string header value, for example "image/png" chrome incompatibilities although this api is modeled on chrome's webrequest extension api, there are some differences.

XPCOMUtils.jsm
remarks this lets an extension bundle its own javascript code modules within itself and have them load one another.
... for example, if an extension named "myextension" bundles foo.jsm and bar.jsm, and foo.jsm needs to load bar.jsm, it can do so like this: components.utils.import("resource://gre/modules/xpcomutils.jsm"); xpcomutils.importrelative(this, "bar.jsm"); in other words: importrelative will only work from other code modules (such as jsm files).

JavaScript code modules
for example, a module could be used by firefox itself as well as by extensions, in order to avoid code duplication.
... mozilla labs js modules this page features a list of javascript modules, along with download links and documentation, that extension developers can use in their code.

Bootstrapping a new locale
mkdir -p ab-cd/browser/installer ab-cd/browser/profile/chrome ab-cd/browser/searchplugins ab-cd/browser/updater ab-cd/toolkit cp -r mozilla-1.9.x/browser/locales/ ab-cd/browser cp -r mozilla-1.9.x/dom/locales/ ab-cd/dom cp -r mozilla-1.9.x/editor/locales/ ab-cd/editor cp -r mozilla-1.9.x/extensions/reporter/locales/chrome ab-cd/extensions cp -r mozilla-1.9.x/netwerk/locales/ ab-cd/netwerk cp -r mozilla-1.9.x/other-licenses/branding/firefox/locales/ ab-cd/other-licenses cp -r mozilla-1.9.x/security/manager/locales/ ab-cd/security cp -r mozilla-1.9.x/toolkit/locales/ ab-cd/toolkit getting started change your directory to the new working directory so you are in the ~/[your working director...
...you can either use the locale switcher extension, or set it in about:config.

L10n Checks
if you want to test the localization for de, run: check-l10n-completeness -i xpi my-extension.xpi de to check all locales in an extension: check-l10n-completeness -i xpi my-extension.xpi language packs (xpis) mode l10n checks can compare two locales found in different xpi files.
..."seamonkey" with its extensions), e.g.: check-l10n-completeness -f suite/locales/l10n.ini ../l10n/ de test the reference locale in the source mode you can tell l10n checks to also check the reference locale, by setting the -e parameter (requires the -a parameter to be set too), e.g.: check-l10n-completeness -a 1 -e suite/locales/l10n.ini ../l10n/ de turbo mode in the source mode you can tell l10n checks to look only for miss...

Localizing with Mercurial
here's how to create a l10n patch with hg and the mq extension: enable mq by adding hg.ext = to your mercurial config file (~/.hgrc on unix-like systems or mercurial.ini on windows) under the [extensions] section.
... please refer to mqtutorial and mq documentation for further uses of mq extension to manage patches.

Writing localizable code
it is aimed at mozilla and extension developers.
...using a directory structure like this eases the localization process without the source code and is especcially recommended to extension authors.