[Project_owners] Getting the panel (tab) id for tabs out of focus

[Jesper Staun Hansen]

Found other methods and this can be discarded.

Jesper Staun Hansen wrote:
> As many already know then I have been trying get the tab id which is 
> queue for every tab (panel).
> There is no trouble in getting the tab id for the tab in focus with:
>     getBrowser().selectedTab.linkedPanel
> But having trouble with a working tab.
>
> There is some code in firefox's tabbrowser.xml (see 
> http://lxr.mozilla.org/mozilla/source/xpfe/global/resources/content/bindings/tabbrowser.xml#926)
> 925             var tabBrowser = this.parentNode.parentNode.parentNode;
> 926             var tab = 
> document.getAnonymousElementByAttribute(tabBrowser, "linkedpanel", this.id);
>
> These lines should get the current working tab and not the selected tab. 
> But its not working as this.parentNode is not defined.
> So I got some info back with this (all other parentNode usage is null):
>
> 330        try {
> 331              var tabBrowser = 
> getBrowser().parentNode.parentNode.parentNode.parentNode;
> 332              var tab = 
> document.getAnonymousElementByAttribute(tabBrowser, "linkedpanel", this.id);
> 333              dump("..."+tab+"\n");
> 334        } catch (e) { dump("..."+e+"\n"); }
>
> Which returns this:
> [Exception... "Could not convert JavaScript argument arg 0 
> [nsIDOMDocumentXBL.getAnonymousElementByAttribute]"  nsresult: 
> "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)"  location: "JS frame :: 
> chrome://test/content/test.js :: getTab :: line 332"  data: no]
>
> so it seems like there is "something"...
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