调度CustomEvent（）到prefwindow - Firefox插件 [英] Dispatch CustomEvent() to prefwindow - Firefox addon

问题描述

使用firefox插件，我希望发送一个 CustomEvent（） 到首选项窗口。

Working with a firefox addon, I wish to send a CustomEvent() to a preference window.

我使用 openDialog（），并保持对打开的窗口的引用。之后，我尝试发送事件，但事件从未收到。

I open the preference window using an openDialog(), and keep a reference to the opened window. After that, I try to dispatch the event, but the event is never received.

var pWin = window.openDialg("chrome://myextension/path/options.xul", "name", features); 
var event = new pWin.CustomEvent("prefwindow-event"); 
pWin.dispatchEvent(event);

在prefwindow范围内，我在XUL附加的脚本中有这个代码：

In the prefwindow scope, I have this code in the XUL attached script :

window.addEventListener("prefwindow-event", this.catchEvent, false); 

但是，我从来没有收到过该事件。 CustomEvent（）的文档说

However, I never receive that event. The documentation for CustomEvent() says

创建一个CustomEvent对象时，必须从
创建一个与您相同窗口的对象

When creating a CustomEvent object, you must create the object from the same window as you're going to fire against.

这是否意味着我永远不会将主要扩展范围的事件发送到另一个窗口？如果确实有可能，我在这里做错什么？如果没有，是否有替代方案？

So does it mean that, I can never dispatch an event from my main extension scope to that of another window ? If this is indeed possible, what am I doing wrong here ? If not, is there an alternative ?

推荐答案

我猜想以下将会工作

var pWin = window.openDialg("chrome://myextension/path/options.xul", "name", features); 
pWin.addEventListener("load", function(){
  var event = new pWin.CustomEvent("prefwindow-event"); 
  pWin.dispatchEvent(event);
}, false);

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