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Access dom after "chrome-document-global-created"

I need to get the DOM when the Mozilla observer event "chrome-document-global-created" is fired. Therefore, I have the following code. But how can I get the DOM from there? Data is null (according to documentation), can someone please tell me which object i have to use?

Many thanks!

observe: function(subject, topic, data) {
  which object is it? document? window? cant find anything there about dom...
}
Solution

  • If you look at the documentation, subject is a window. You still need to use QueryInterface() to actually get the nsIDOMWindow interface but after that things get pretty obvious:

    var doc = subject.QueryInterface(Components.interfaces.nsIDOMWindow).document;
dump(doc.documentElement.innerHTML);

    Note that there won't be much in the document at this point - it has just been created. As Boris Zbarsky notes in the comments, you probably want to add a DOMContentLoaded event listener to wait for the document contents to become available:

    var wnd = subject.QueryInterface(Components.interfaces.nsIDOMWindow);
wnd.addEventListener("DOMContentLoaded", function(event)
{
  dump(wnd.document.documentElement.innerHTML);
}, false);