XULRunner tips

  • Revision slug: XULRunner_tips
  • Revision title: XULRunner tips
  • Revision id: 109159
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  • Creator: Sevenspade
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XULRunner Frequently Asked Questions. Work in progress.

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. However with XULRunner 1.9 is seems that the XULRunner directory is ignored while the profile and application directories are checked. The following prefs must also be set to make the XPInstall dialog, extension manager, and theme manager work:

pref("xpinstall.dialog.confirm", {{ string.quote("chrome://mozapps/content/xpinstall/xpinstallConfirm.xul") }});
pref("xpinstall.dialog.progress.skin", {{ string.quote("chrome://mozapps/content/extensions/extensions.xul?type=themes") }});
pref("xpinstall.dialog.progress.chrome", {{ string.quote("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("extensions.dss.enabled", false);
pref("extensions.dss.switchPending", false);
pref("extensions.ignoreMTimeChanges", false);
pref("extensions.logging.enabled", false);
pref("general.skins.selectedSkin", "classic/1.0");
// NB these point at AMO
pref("extensions.update.url", {{ string.quote("chrome://mozapps/locale/extensions/extensions.properties") }});
pref("extensions.getMoreExtensionsURL", {{ string.quote("chrome://mozapps/locale/extensions/extensions.properties") }});
pref("extensions.getMoreThemesURL", {{ string.quote("chrome://mozapps/locale/extensions/extensions.properties") }});

Useful Chrome URLs

Most of these require branding.

Window URL Window Type
Extension Manager {{ string.trim("chrome://mozapps/content/extensions/extensions.xul?type=extensions") }} Extension:Manager-extensions
Theme Manager {{ string.trim("chrome://mozapps/content/extensions/extensions.xul?type=themes") }} Extension:Manager-themes
JavaScript Console {{ string.trim("chrome://global/content/console.xul") }} global:console
about:config {{ string.trim("chrome://global/content/config.xul") }}   

Developer Extensions

--

Tlaurenzo 17:34, 17 March 2006 (PST)There is another way to go about this. See my blog post for a working method to get Venkman and the Extension Developer's Extension working in XULRunner apps.

Venkman

  • Need a custom build or a compatible extension
  • Need to edit compatibility in
  • install.rdf to match the id and versions in application.ini
  • Needs a method to start venkman (usually by overlaying the main XUL file, similar to existing code for Firefox, Suite, etc.)
  • The function toOpenWindowByType() needs to be defined. I found a working stub on
  • this blog. Any better suggestion?
  • Venkman uses {{ string.quote("chrome://communicator/skin/") }} as an alias for {{ string.quote("chrome://global/skin/") }} and this alias was maintained in the XULRunner toolkit until XULRunner 1.9 was released. When using XULRunner 1.9 or greater, you can create your own alias"
in your chrome manifest add a "skin" line:

skin communicator classic/1.0 skin/communicator/

add a skin folder named "communicator" and add a single CSS file named "communicator.css" with this content:

@import url({{string.quote("chrome://global/skin")}});

DOM Inspector

To add DOM Inspector 2.0.* to your XULRunner 1.9.0.* application follow these steps:

  • Download the DOM Inspector XPI package from https://addons.mozilla.org/en-US/firefox/addon/6622 (instead of clicking the "Add to..." button, left-click and select "Save Link As...").
  • Save the dom_inspector-*.xpi package to a temporary directory
  • Unzip the package
  • Copy the following files:
    chrome/inspector.jar to the chrome directory of your XULRunner application
    components/inspector-cmdline.js to your components directory
    defaults/preferences/inspector.js to your preferences directory
  • Open your chrome.manifest file and add these lines:
content  inspector                       jar:inspector.jar!/content/inspector/ xpcnativewrappers=no
locale   inspector           en-US       jar:inspector.jar!/locale/en-US/inspector/
skin     inspector           modern/1.0  jar:inspector.jar!/skin/modern/inspector/
skin     inspector           classic/1.0 jar:inspector.jar!/skin/classic/inspector/

overlay  {{string.quote("chrome://inspector/content/popupOverlay.xul")}}   {{string.quote("chrome://inspector/content/viewers/dom/popupOverlay.xul")}}
overlay  {{string.quote("chrome://inspector/content/commandOverlay.xul")}} {{string.quote("chrome://inspector/content/viewers/styleRules/commandOverlay.xul")}}
overlay  {{string.quote("chrome://inspector/content/keysetOverlay.xul")}}  {{string.quote("chrome://inspector/content/viewers/dom/keysetOverlay.xul")}}
overlay  {{string.quote("chrome://inspector/content/popupOverlay.xul")}}   {{string.quote("chrome://inspector/content/viewers/styleRules/popupOverlay.xul")}}
overlay  {{string.quote("chrome://inspector/content/commandOverlay.xul")}} {{string.quote("chrome://inspector/content/viewers/dom/commandOverlay.xul")}}

To launch DOM Inspector in your application, you need to open its main window, with a command like this:

window.open({{string.quote("chrome://inspector/content/inspector.xul")}}, "", "chrome");

Component Viewer

Need custom build, first of all. What else?

Extension Developer's Extension

Extension Developer's Extension is a useful tool, featuring Live XUL Editor and JavaScript Shell. To install the extension into your application you'll need to hack its install.rdf (see above). You'll probably also want to create menuitems that let you open the JS Shell and other tools provided by the extension.

Branding

Branding is a chrome package containing product-specific information (e.g. the product name, vendor, and logo). Some XULRunner components (in particular, the Extension Manager) depend on branding, in the sense that they expect to find certain strings in {{string.trim("chrome://branding/locale/brand.dtd")}} and {{string.trim("chrome://branding/locale/brand.properties")}}. In order to satisfy these dependencies, you can save Firefox's brand.dtd/brand.properties to chrome/locale/branding folder, modify them appropriately, and register a locale provider for branding by adding the following line to your chrome manifest:

locale branding en-US chrome/locale/branding/

The location you put the branding files in doesn't matter, as long as you register it appropriately in the manifest. In addition, a branding content package must be registered to include the application logos:

content branding chrome/branding/

Three files should be provided in this folder: about.png, icon48.png and icon64.png. See Firefox for example.

Making Windows display correct application name and icon when buttons are grouped

By default, the task bar on Windows might group windows belonging to the same process into one button to save space. This button is usually called "xulrunner.exe" and has XULRunner's icon. There are two approaches to display the branding of your application instead:

  • When compiling XULRunner yourself: create a file module.ver in the directory mozilla/xulrunner/app with the contents:
    WIN32_MODULE_DESCRIPTION=MyApplication

    MyApplication should be replaced by whatever you want to see as title of the button. You can also replace xulrunner.ico in the same directory to change XULRunner's icon to the icon of your application.

  • With a precompiled XULRunner: use xulrunner-stub.exe to start your application but rename it into MyApplication.exe. With XULRunner 1.9 this will make the desired name appear in the task bar (not with XULRunner 1.8 however). Your application's icon can also be added to this executable with a tool like
  • Resource Hacker. To change icon of specific window, see Window icons

Reading command line arguments

See Chrome: Command Line. Command line arguments are handled via nsICommandLineHandler as usual.

Preferences needed for file download dialogs

To use the unknown-content-type and file-downloads dialogs from a <browser> element, you need to add the following prefs:

pref("browser.download.useDownloadDir", true);
pref("browser.download.folderList", 0);
pref("browser.download.manager.showAlertOnComplete", true);
pref("browser.download.manager.showAlertInterval", 2000);
pref("browser.download.manager.retention", 2);
pref("browser.download.manager.showWhenStarting", true);
pref("browser.download.manager.useWindow", true);
pref("browser.download.manager.closeWhenDone", true);
pref("browser.download.manager.openDelay", 0);
pref("browser.download.manager.focusWhenStarting", false);
pref("browser.download.manager.flashCount", 2);
//
pref("alerts.slideIncrement", 1);
pref("alerts.slideIncrementTime", 10);
pref("alerts.totalOpenTime", 4000);
pref("alerts.height", 50);

If you are missing preferences that a dialog requires, you will get the following errors:

Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIPrefBranch.getBoolPref]

Error: dialog has no properties
Source File: {{string.trim("chrome://mozapps/content/downloads/u...ontentType.xul")}}
Line: 1

Enabling Password Manager

These preferences seem to be the default in Firefox, however, they are missing in XULRunner. Without these settings Password Manager will not store login details.

pref("signon.rememberSignons", true);
pref("signon.expireMasterPassword", false);
pref("signon.SignonFileName", "signons.txt");

You also need to get an instance of the login manager service, which internally initializes the system:

Components.classes["@mozilla.org/login-manager;1"].getService(Components.interfaces.nsILoginManager);

Using Firefox 3 to run XULRunner applications

Firefox 3 contains the XULRunner runtime. It has a

-app command-line switch to run a specified XUL application instead of starting the browser. For example, on Windows:

  firefox.exe -app path\to\application.ini

On Linux:

Using firefox command doesn't work. So you can use the xulrunner command :

  xulrunner -app path\to\application.ini

On the Mac:

  /Applications/Firefox.app/Contents/MacOS/firefox-bin -app /path/to/application.ini

Note that at least on the Mac, you need to use a full path. Partial paths don't seem to work.

Troubleshooting

Window title missing

If the title of your XUL <window> is blank, even though you specified a title attribute, make sure the extension on your XUL file is .xul rather than .xml

Default Theme

To create a default theme you need to create a folder in the extensions folder with an install.rdf in it.  As of Oct. 2008, the folder needs to have the same name as the one in Firefox 3.0. 

\MyApp\Extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\install.rdf

It should also have an <em:internalName>classic/1.0</em:internalName> as that is the default theme in Firefox.

{{ languages( { "ja": "ja/XULRunner_tips", "fr": "fr/Astuces_XULRunner" } ) }}

Revision Source

<p>XULRunner Frequently Asked Questions. Work in progress.</p>
<h2 name="Extension_Manager">Extension Manager</h2>
<p>To be able to install any extensions, you first need to enable the Extension Manager in <a href="/en/XUL_Application_Packaging#em" title="en/XUL_Application_Packaging#em">application.ini</a>. XULRunner 1.8.0 does not load extensions from the application directory; only the XULRunner directory and the user profile directory are checked. However with XULRunner 1.9 is seems that the XULRunner directory is ignored while the profile and application directories are checked. The following prefs must also be set to make the XPInstall dialog, extension manager, and theme manager work:</p>
<pre class="eval">pref("xpinstall.dialog.confirm", {{ string.quote("chrome://mozapps/content/xpinstall/xpinstallConfirm.xul") }});
pref("xpinstall.dialog.progress.skin", {{ string.quote("chrome://mozapps/content/extensions/extensions.xul?type=themes") }});
pref("xpinstall.dialog.progress.chrome", {{ string.quote("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("extensions.dss.enabled", false);
pref("extensions.dss.switchPending", false);
pref("extensions.ignoreMTimeChanges", false);
pref("extensions.logging.enabled", false);
pref("general.skins.selectedSkin", "classic/1.0");
// NB these point at AMO
pref("extensions.update.url", {{ string.quote("chrome://mozapps/locale/extensions/extensions.properties") }});
pref("extensions.getMoreExtensionsURL", {{ string.quote("chrome://mozapps/locale/extensions/extensions.properties") }});
pref("extensions.getMoreThemesURL", {{ string.quote("chrome://mozapps/locale/extensions/extensions.properties") }});
</pre>
<h2 name="Useful_Chrome_URLs">Useful Chrome URLs</h2>
<p>Most of these require <a href="#Branding"> branding</a>.</p>
<table class="standard-table"> <tbody> <tr> <th>Window</th> <th>URL</th> <th>Window Type</th> </tr> <tr> <td>Extension Manager</td> <td>{{ string.trim("chrome://mozapps/content/extensions/extensions.xul?type=extensions") }}</td> <td>Extension:Manager-extensions</td> </tr> <tr> <td>Theme Manager</td> <td>{{ string.trim("chrome://mozapps/content/extensions/extensions.xul?type=themes") }}</td> <td>Extension:Manager-themes</td> </tr> <tr> <td>JavaScript Console</td> <td>{{ string.trim("chrome://global/content/console.xul") }}</td> <td>global:console</td> </tr> <tr> <td>about:config</td> <td>{{ string.trim("chrome://global/content/config.xul") }}</td> <td>  </td> </tr> </tbody>
</table>
<h2 name="Developer_Extensions">Developer Extensions</h2>
<p>--</p>
<p><a href="/User:Tlaurenzo" title="User:Tlaurenzo">Tlaurenzo</a> 17:34, 17 March 2006 (PST)There is another way to go about this. See my <a class="external" href="http://tjlaurenzo.blogspot.com/2006/03/getting-dev-tools-working-with.html">blog post</a> for a working method to get Venkman and the Extension Developer's Extension working in XULRunner apps.</p>
<h3 name="Venkman"><a href="/en/Venkman" title="en/Venkman">Venkman</a></h3>
<ul> <li>Need a custom build or a compatible extension</li> <li>Need to edit compatibility in</li> <em>install.rdf</em> to match the id and versions in application.ini <li>Needs a method to start venkman (usually by overlaying the main XUL file, similar to existing code for Firefox, Suite, etc.)</li> <li>The function toOpenWindowByType() needs to be defined. I found a working stub on</li> <a class="external" href="http://tjlaurenzo.blogspot.com/2006/03/getting-dev-tools-working-with.html">this blog</a>. Any better suggestion? <li>Venkman uses {{ string.quote("chrome://communicator/skin/") }} as an alias for {{ string.quote("chrome://global/skin/") }} and this alias was maintained in the XULRunner toolkit until XULRunner 1.9 was released. When using XULRunner 1.9 or greater, you can create your own alias"</li>
</ul>
<pre>in your chrome manifest add a "skin" line:

skin communicator classic/1.0 skin/communicator/

add a skin folder named "communicator" and add a single CSS file named "communicator.css" with this content:

@import url({{string.quote("chrome://global/skin")}});
</pre>
<h3 name="DOM_Inspector"><a href="/en/DOM_Inspector" title="en/DOM_Inspector">DOM Inspector</a></h3>
<p>To add DOM Inspector 2.0.* to your XULRunner 1.9.0.* application follow these steps:</p>
<ul> <li>Download the DOM Inspector XPI package from <a class="link-https" href="https://addons.mozilla.org/en-US/firefox/addon/6622" title="https://addons.mozilla.org/en-US/firefox/addon/6622">https://addons.mozilla.org/en-US/firefox/addon/6622</a> (instead of clicking the "Add to..." button, left-click and select "Save Link As...").</li> <li>Save the <em>dom_inspector-*.xpi</em> package to a temporary directory</li> <li>Unzip the package</li> <li>Copy the following files:<br> <em>chrome/inspector.jar</em> to the chrome directory of your XULRunner application<br> <em>components/inspector-cmdline.js</em> to your components directory<br> <em>defaults/preferences/inspector.js</em> to your preferences directory</li> <li>Open your chrome.manifest file and add these lines:</li>
</ul>
<pre>content  inspector                       jar:inspector.jar!/content/inspector/ xpcnativewrappers=no
locale   inspector           en-US       jar:inspector.jar!/locale/en-US/inspector/
skin     inspector           modern/1.0  jar:inspector.jar!/skin/modern/inspector/
skin     inspector           classic/1.0 jar:inspector.jar!/skin/classic/inspector/

overlay  {{string.quote("chrome://inspector/content/popupOverlay.xul")}}   {{string.quote("chrome://inspector/content/viewers/dom/popupOverlay.xul")}}
overlay  {{string.quote("chrome://inspector/content/commandOverlay.xul")}} {{string.quote("chrome://inspector/content/viewers/styleRules/commandOverlay.xul")}}
overlay  {{string.quote("chrome://inspector/content/keysetOverlay.xul")}}  {{string.quote("chrome://inspector/content/viewers/dom/keysetOverlay.xul")}}
overlay  {{string.quote("chrome://inspector/content/popupOverlay.xul")}}   {{string.quote("chrome://inspector/content/viewers/styleRules/popupOverlay.xul")}}
overlay  {{string.quote("chrome://inspector/content/commandOverlay.xul")}} {{string.quote("chrome://inspector/content/viewers/dom/commandOverlay.xul")}}
</pre>
<p>To launch DOM Inspector in your application, you need to open its main window, with a command like this:</p>
<pre>window.open({{string.quote("chrome://inspector/content/inspector.xul")}}, "", "chrome");
</pre>
<h3 name="Component_Viewer">Component Viewer</h3>
<p>Need custom build, first of all. What else?</p>
<h3 name="Extension_Developer.27s_Extension">Extension Developer's Extension</h3>
<p><a class="external" href="http://ted.mielczarek.org/code/mozilla/extensiondev/">Extension Developer's Extension</a> is a useful tool, featuring Live XUL Editor and JavaScript Shell. To install the extension into your application you'll need to hack its install.rdf (see above). You'll probably also want to create menuitems that let you open the JS Shell and other tools provided by the extension.</p>
<h2 name="Branding">Branding</h2>
<p>Branding is a <a href="/en/Chrome_Registration" title="en/Chrome_Registration">chrome package</a> containing product-specific information (e.g. the product name, vendor, and logo). Some XULRunner components (in particular, the <a href="#Extension_Manager"> Extension Manager</a>) depend on branding, in the sense that they expect to find certain strings in <code>{{string.trim("<a class=" external" href="chrome://branding/locale/brand.dtd" rel="freelink">chrome://branding/locale/brand.dtd</a></code>")}} and <code>{{string.trim("</code><code><a class=" external" href="chrome://branding/locale/brand.properties" rel="freelink">chrome://branding/locale/brand.properties</a>")}}</code>. In order to satisfy these dependencies, you can save Firefox's <code>brand.dtd</code>/<code>brand.properties</code> to <code>chrome/locale/branding</code> folder, modify them appropriately, and <a href="/en/Chrome_Registration#locale" title="en/Chrome_Registration#locale">register a locale provider</a> for <code>branding</code> by adding the following line to your chrome manifest:</p>
<pre class="eval">locale branding en-US chrome/locale/branding/
</pre>
<p>The location you put the branding files in doesn't matter, as long as you register it appropriately in the manifest. In addition, a branding content package <a href="/en/Chrome_Registration#content" title="en/Chrome_Registration#content">must be registered</a> to include the application logos:</p>
<pre class="eval">content branding chrome/branding/
</pre>
<p>Three files should be provided in this folder: <em>about.png</em>, <em>icon48.png</em> and <em>icon64.png</em>. See <a class="external" href="http://mxr.mozilla.org/mozilla/source/other-licenses/branding/firefox/content/">Firefox</a> for example.<span class="comment"><br>
</span></p>
<h3 name="Making_Windows_display_correct_application_name_and_icon_when_buttons_are_grouped">Making Windows display correct application name and icon when buttons are grouped</h3>
<p>By default, the task bar on Windows might group windows belonging to the same process into one button to save space. This button is usually called "xulrunner.exe" and has XULRunner's icon. There are two approaches to display the branding of your application instead:</p>
<ul> <li>When compiling XULRunner yourself: create a file module.ver in the directory mozilla/xulrunner/app with the contents: <pre>WIN32_MODULE_DESCRIPTION=MyApplication</pre> <p>MyApplication should be replaced by whatever you want to see as title of the button. You can also replace xulrunner.ico in the same directory to change XULRunner's icon to the icon of your application.</p> </li> <li>With a precompiled XULRunner: use xulrunner-stub.exe to start your application but rename it into MyApplication.exe. With XULRunner 1.9 this will make the desired name appear in the task bar (not with XULRunner 1.8 however). Your application's icon can also be added to this executable with a tool like</li> <a class="external" href="http://www.angusj.com/resourcehacker/">Resource Hacker</a>. To change icon of specific window, see <a class="internal" href="/en/Window_icons" title="En/Window icons">Window icons</a></ul> <h2 name="Reading_command_line_arguments">Reading command line arguments</h2> <p>See <a href="/en/Chrome/Command_Line" title="en/Chrome/Command_Line">Chrome: Command Line</a>. Command line arguments are handled via nsICommandLineHandler as usual.</p> <h2 name="Preferences_needed_for_file_download_dialogs">Preferences needed for file download dialogs</h2> <p>To use the unknown-content-type and file-downloads dialogs from a &lt;browser&gt; element, you need to add the following prefs:</p> <pre class="eval">pref("browser.download.useDownloadDir", true);
pref("browser.download.folderList", 0);
pref("browser.download.manager.showAlertOnComplete", true);
pref("browser.download.manager.showAlertInterval", 2000);
pref("browser.download.manager.retention", 2);
pref("browser.download.manager.showWhenStarting", true);
pref("browser.download.manager.useWindow", true);
pref("browser.download.manager.closeWhenDone", true);
pref("browser.download.manager.openDelay", 0);
pref("browser.download.manager.focusWhenStarting", false);
pref("browser.download.manager.flashCount", 2);
//
pref("alerts.slideIncrement", 1);
pref("alerts.slideIncrementTime", 10);
pref("alerts.totalOpenTime", 4000);
pref("alerts.height", 50);
</pre> <p>If you are missing preferences that a dialog requires, you will get the following errors:</p> <pre class="eval">Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIPrefBranch.getBoolPref]

Error: dialog has no properties
Source File: <code>{{string.trim("</code><a class=" external" href="chrome://mozapps/content/downloads/unknownContentType.xul" rel="freelink">chrome://mozapps/content/downloads/u...ontentType.xul</a>")}}
Line: 1
</pre> <h2 name="Enabling_Password_Manager">Enabling Password Manager</h2> <p>These preferences seem to be the default in Firefox, however, they are missing in XULRunner. Without these settings Password Manager will not store login details.</p> <pre class="eval">pref("signon.rememberSignons", true);
pref("signon.expireMasterPassword", false);
pref("signon.SignonFileName", "signons.txt");
</pre> <p>You also need to get an instance of the login manager service, which internally initializes the system:</p> <pre class="eval">Components.classes["@mozilla.org/login-manager;1"].getService(Components.interfaces.nsILoginManager);
</pre> <h2 name="Using_Firefox_3_to_run_XULRunner_applications">Using Firefox 3 to run XULRunner applications</h2> <p>Firefox 3 contains the XULRunner runtime. It has a</p> <p><code>-app</code> command-line switch to run a specified XUL application instead of starting the browser. For example, on Windows:</p> <pre class="eval">  firefox.exe -app <em>path\to\</em>application.ini
</pre> <p>On Linux:</p> <p>Using <span style="font-family: Courier New;">firefox </span>command doesn't work. So you can use the <span style="font-family: Courier New;">xulrunner</span> command :</p> <pre class="eval">  xulrunner -app <em>path\to\</em>application.ini</pre> <p>On the Mac:</p> <pre class="eval">  /Applications/Firefox.app/Contents/MacOS/firefox-bin -app <em>/path/to/</em>application.ini
</pre> <p>Note that at least on the Mac, you need to use a full path. Partial paths don't seem to work.</p> <h2 name="Troubleshooting">Troubleshooting</h2> <h3 name="Window_title_missing">Window title missing</h3> <p>If the title of your XUL <code>&lt;<a href="/en/XUL/window" title="en/XUL/window">window</a>&gt;</code> is blank, even though you specified a title attribute, make sure the extension on your XUL file is <code>.xul</code> rather than <code>.xml</code></p> <h2>Default Theme</h2> <p>To create a default theme you need to create a folder in the extensions folder with an <a class="external" href="/en/Install_Manifests" title="http://developer.mozilla.org/editor/fckeditor/core/editor/en/Install_Manifests">install.rdf</a> in it.  As of Oct. 2008, the folder needs to have the same name as the one in Firefox 3.0. </p> <p><code>\MyApp\Extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\</code>install.rdf</p> <p>It should also have an &lt;em:internalName&gt;classic/1.0&lt;/em:internalName&gt; as that is the default theme in Firefox.</p> <p>{{ languages( { "ja": "ja/XULRunner_tips", "fr": "fr/Astuces_XULRunner" } ) }}</p>
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