firefox-addon - 卸载firefox插件时如何在浏览器中打开页面

Question

我想在用户卸载插件时打开链接，因此为此我必须编写代码以及在哪个事件下。

如果有人知道这件事，请帮助我。

目前这就是我在卸载时正在做的事情。但是 gBrowser.addTab(Website + 'uninstalled=true&token=' + uniqueguid); 在这里不起作用。

var UninstallObserver = {
_uninstall : false,
observe : function(subject, topic, data) {

           //===Write Code here for Delete File Uninsatll Time
           //alert("Uninstall Time Delete File");
           var Filename = "webmail";
           // Delete all template file.

try{
var pref =  Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefBranch);
var finished = "";
pref.setBoolPref("myextension.install.just_installed", false);  
}
catch(e) {}


            gBrowser.addTab(Website + 'uninstalled=true&token=' + uniqueguid);
            var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);

            file.initWithPath(Components.classes["@mozilla.org/file/directory_service;1"].getService( Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path+"\\DefaultTemplate.txt");
            if ( file.exists() == true )
            {   
                var aFile = Components.classes["@mozilla.org/file/local;1"].createInstance();
                if (aFile instanceof Components.interfaces.nsILocalFile)
                {                            
                    aFile.initWithPath(Components.classes["@mozilla.org/file/directory_service;1"].getService( Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path + "\\DefaultTemplate.txt");
                    aFile.remove(false);
                }
            }           
        //=======       
  if (topic == "em-action-requested") {
    subject.QueryInterface(Components.interfaces.nsIUpdateItem);

    if (subject.id == MY_EXTENSION_UUID)
     {

      if (data == "item-uninstalled")
      {
                    //==Delete File Whenever Uninstall          
                         //alert("When Uninatall");
                    //===========   
         data =  "item-cancel-action";
         this._uninstall = true;
      }

      if (data == "disabled")
      {
        //  alert("You are not allow to disable SysLocker.");
        this._uninstall = true;
      }

      else if (data == "item-cancel-action") 
      {
        this._uninstall = false;
      }
    }
  } 
  else if (topic == "quit-application-granted")
  {

  data =  "item-cancel-action";
    if (this._uninstall) 
    {     
      //Code here to delete registry       
    }
    this.unregister();
  }
},

register : function() {

 var observerService =
   Components.classes["@mozilla.org/observer-service;1"].
     getService(Components.interfaces.nsIObserverService);

 observerService.addObserver(this, "em-action-requested", false);
 observerService.addObserver(this, "quit-application-granted", false);

},

unregister : function() {

  var observerService =
    Components.classes["@mozilla.org/observer-service;1"].
      getService(Components.interfaces.nsIObserverService);

  observerService.removeObserver(this,"em-action-requested");
  observerService.removeObserver(this,"quit-application-granted");
}

}

谢谢

Answer 1

0) 这是什么类型的扩展？我认为这是需要重新启动的常规扩展； bootstrapped (restartless) extensions have their own uninstall notification .

1) 根据 MDC docs ，em-action-requested 通知在 Firefox 4+ 中被替换为不同的通知，您是使用 Firefox 4 还是 3.6 进行测试？

2) gBrowser.addTab 到底是怎么“不在这里工作”的？代码是否达到了这一点？您在 Error Console 中收到任何消息吗？ (请参阅该页面以获取设置提示)？如果将代码放在 XPCOM 组件中(这是正确的)，则首先必须获得对浏览器窗口的引用。参见 Working with windows in chrome code .