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POWhy is my init() function not being run? (Automatically adding a toolbar button when installing a Firefox extension but only on first run)
 

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  1. POWhy is my init() function not being run? (Automatically adding a toolbar button when installing a Firefox extension but only on first run)
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    <p>I keep returning to this problem, and keep on failing to solve it.</p> <p>I've read tens of pages describing how to do it, and looked at answers such as <a href="https://stackoverflow.com/questions/579656/how-can-i-make-my-firefox-extension-toolbar-button-appear-automatically">How can I make my Firefox extension toolbar button appear automatically?</a> on here, but I just can't get this right.</p> <p>I understand the concept of what I need to do, but the point I have reached is that, while the extension itself works correctly, I cannot get the <code>init(</code>) function to run and the load listener doesn't seem to be being added either (I have added <code>alert</code>s before and after the <code>window.top.addEventListener..</code> code but the <code>alert</code>s aren't firing either.</p> <p>What I want to achieve is the recommended process of adding the toolbar button on install / update but only on first run/install.</p> <p>My extension consists of:</p> <ul> <li><code>chrome.manifest</code> and <code>install.rdf</code> in the extension root directory.</li> <li>a <code>chrome</code> folder which contains the other elements (<code>extensionName.js</code>, <code>extensionName.png</code>, <code>extensionName.xul</code>, <code>extensionName.css</code> and <code>icon.png</code>).</li> <li><code>prefs.js</code> in a <code>defaults/preferences</code> directory. This contains the <code>extensions.MyExtensionNameButton.firstRunDone</code> pref set to <code>false</code>.</li> </ul> <p>The extension itself works exactly as required (it includes a toolbar button and right-click context menu items).</p> <p>My <code>extensionName.js</code> file contains the following (with the actual extension functions trimmed out as they are working and would make the question too long):</p> <pre><code>objMyExtensionNameButton = { // functions that are called by the .xul are in here, init : function() { var firstRunPref = "extensions.MyExtensionNameButton.firstRunDone"; alert("init function run"); if (!Application.prefs.getValue(firstRunPref)) { Application.prefs.setValue(firstRunPref, true); // all the rest of the first run code goes here. alert("this is the first run"); } else { alert("this is NOT the first run"); } } }; window.top.addEventListener("load", function() { objMyExtensionNameButton.init(); }, false); </code></pre> <p>The relevant part of the xul that includes the .js file is shown below:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;?xml-stylesheet type="text/css" href="chrome://MyExtensionNameButton/content/button.css"?&gt; &lt;!DOCTYPE overlay &gt; &lt;overlay id="MyExtensionNameButton-overlay" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"&gt; &lt;script type="application/javascript" src="chrome://MyExtensionNameButton/content/MyExtensionNameButton.js"/&gt; &lt;!-- Firefox --&gt; &lt;toolbarpalette id="BrowserToolbarPalette"&gt; &lt;toolbarbutton id="MyExtensionNameButton"/&gt; &lt;/toolbarpalette&gt; &lt;!-- button details --&gt; &lt;toolbarbutton id="MyExtensionNameButton" ...etc etc etc... </code></pre> <p>I cannot seem to get anything to run when the extension is installed or when Firefox starts - clicking on extension options in the toolbar button or the right click menu runs those functions without any problem - those functions are all included in an object.</p> <p>I've tried moving the <code>init()</code> function both inside and outside of that object and, I believe, calling it correctly.</p> <p>The other odd thing is that I don't seem to see any errors from the extension in the console (I wasn't seeing any errors when I hadn't added the <code>default/preferences/prefs.js</code> file to the <code>.xpi</code> either, so something seems amiss there as well).</p> <p>Thanks,</p> <p>FM</p>
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    1. USFat Monk
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      1. POWhy is my init() function not being run? (Automatically adding a toolbar button when installing a Firefox extension but only on first run)
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      1. POWhy is my init() function not being run? (Automatically adding a toolbar button when installing a Firefox extension but only on first run)
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    1. COThat should be working.I have the same code in my extension and it works. Don't know what you might have wrong there.
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      1. POWhy is my init() function not being run? (Automatically adding a toolbar button when installing a Firefox extension but only on first run)
      1. USFilipe Silva
    2. COIt doesn't even look as though the `init` function is getting called. I've got it to the point where the JS syntax is correct so my other functions work fine, but the `alert` in the `init` function doesn't pop up.
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      1. POWhy is my init() function not being run? (Automatically adding a toolbar button when installing a Firefox extension but only on first run)
      1. USFat Monk
    3. COit could be something preventing the alert (this is just a guess :p). have you tried validating if the pref is changed or not?
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      1. POWhy is my init() function not being run? (Automatically adding a toolbar button when installing a Firefox extension but only on first run)
      1. USFilipe Silva
 

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