On 12/02/2014 14:30, Boris Zbarsky wrote:
On 2/12/14 8:44 AM, Girish Sharma wrote:
I want to track the creation and removal of docshells from a top level
content docshell. Is it possible ?
There are no built-in facilities for this right now, as far as I can
tell. You could simply add something....
One option would be to watch window creation for things being added, I
guess, and pagehide for things being removed. But going from a pagehide
event to "what is being removed?" is not trivial..
To observe changes in windows, I add a load and unload event on the
chromeEventHandler of the top level content docshell like [1].
Yeah, that won't work. pageshow/pagehide would at least fire
consistently, but they represent _pages_, not docshells.
-Boris
Dumb question: Could you listen for dom-window-destroyed and
toplevel-window-ready, and figure out from the args which one was a
toplevel-of-type docshell, and/or which ones are descendants of the
top-level-content docshell you're interested in, or is there some reason
that wouldn't work?
~ Gijs
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