Comments on: Firefox Extension Sidebar Removal

By: David Norris

David Norris — Wed, 31 Dec 1969 16:00:00 +0000

Seemingly this code seems to fail as of Firefox 1.5. I believe they’ve changed the resource “urn:mozilla:extension:root” to “urn:mozilla:item:root” and are no longer setting the toBeUninstalled attribute.

I wonder if you are aware of this problem and how to go about fixing it with Firefox 1.5.

By: Philip Chee

Philip Chee — Wed, 31 Dec 1969 16:00:00 +0000

This code is not necessary for Firefox 1.5 since the sidebar uninstall bug has been fixed.

By: James

James — Wed, 31 Dec 1969 16:00:00 +0000

How do I iterrate over the installed extensions in 1.5? This code does not seem to work.

By: Sidd

Sidd — Wed, 31 Dec 1969 16:00:00 +0000

Hi,

I am doing a project in firefox 1.5 in Red Hat Linux to call a audio player from browser. I need a steps to create components necessary for it and also steps on how to access those components from JavaScript.

Bye,

By: mcm

mcm — Wed, 31 Dec 1969 16:00:00 +0000

Type “chrome://mozapps/content/extensions/extensions.js” into the location bar, it’s the code Firefox 1.5 uses to mark and read the extension’s state flags in the extension manager and should give a clue how to modify the code to work in later versions of Firefox.

By: mcm

mcm — Wed, 31 Dec 1969 16:00:00 +0000

Ok here is the code that should work ok on Firefox 1.5:

var uninstallObserver = {
observe:function(subject,topic,data)
{
subject = subject.QueryInterface(Components.interfaces.nsIUpdateItem);

if (subject.name == “Extension Name” && data == “item-uninstalled”)
{
//uninstall clean-up script
}
},

register:function()
{
var observerService = Components.classes["@mozilla.org/observer-service;1"].getService(Components.interfaces.nsIObserverService);
observerService.addObserver(this, “em-action-requested”, false);
},

deregister:function()
{
var observerService = Components.classes["@mozilla.org/observer-service;1"].getService(Components.interfaces.nsIObserverService);
observerService.removeObserver(this,”em-action-requested”);
}
};

Then just call “uninstallObserver.register();” on startup and “uninstallObserver.deregister();” on shutdown.