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    Getting the directory where your add-on is located

    If you need to determine the directory in which your add-on is installed, code like the following will do the trick. 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? " +
            addon.hasResource("file.txt") ? "YES!" : "No");
      alert("Let's pretend I did, it's available from the URL " + addon.getResourceURI("file.txt").spec);
    });
    

    Uninstall an add-on

    Components.utils.import("resource://gre/modules/AddonManager.jsm");
    AddonManager.getAddonByID("youraddon@youraddon.com", function(addon) {
      addon.uninstall();
    });
    

    Disable an add-on

    Components.utils.import("resource://gre/modules/AddonManager.jsm");
    AddonManager.getAddonByID("youraddon@youraddon.com", function(addon) {
      if (addon.isActive) addon.userDisabled = addon.isActive;
    });
    

    Listening for add-on uninstall

    This example sets a variable beingUninstalled that you can check when you get a profile-before-change message to do cleanup for your add-on on uninstall.

    var beingUninstalled;
    
    let listener = {
      onUninstalling: function(addon) {
        if (addon.id == "youraddon@youraddon.com") {
          beingUninstalled = true;
        }
      },
      onOperationCancelled: function(addon) {
        if (addon.id == "youraddon@youraddon.com") {
          beingUninstalled = (addon.pendingOperations & AddonManager.PENDING_UNINSTALL) != 0;
        }
      }
    }
    
    try {
      Components.utils.import("resource://gre/modules/AddonManager.jsm");
      AddonManager.addAddonListener(listener);
    } catch (ex) {}
    

    Document Tags and Contributors

    Last updated by: anistark,
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