674589 - Panels disconnected from their nsIFrames don't close or respond in OS X

Status: RESOLVED INCOMPLETE

(Core :: Widget: Cocoa, defect)

Description

[Rob Campbell [:rc] (:robcee)]

Discovered by positioning the web console in a window and trying to close it, xul panels on OS X can become disconnected from their nsIFrame and become zombies. See bug 674562.

Comment 1

[Steven Michaud [:smichaud] (Retired)]

I should probably take this.  But I won't have time to work on it for a few weeks.

Comment 2

[:Gavin Sharp [email: [e-mail]]]

What are the steps to reproduce this bug (pseudo-code for twiddling a xul:panel is fine)?

Comment 3

[Rob Campbell [:rc] (:robcee)]

*twiddle*

browser.xul

<panel id="my-first-panel"
       orient="vertical"
       ignorekeys="true"
       noautofocus="true"
       noautohide="true"
       titlebar="normal"
       close="true"
       label="My First Panel!">
<!-- some xul widgetry in here -->
</panel>

in browser.js,

let myfirstpanel = document.getElementById("my-first-panel");

function onpopuphiding(e) {
  /* do something sufficiently slow that this function will take some 
   * time to complete.
   * e.g., query and set a bunch of preferences */
}

myfirstpanel.addEventListener("popuphiding", onpopuphiding, false);

function onpouphidden(e) {
  /* this will never fire */
}

myfirstpanel.addEventListener("popuphidden", onpopuphidden, false);

...

Comment 4

[Steven Michaud [:smichaud] (Retired)]

Is this still happening?

Comment 5

[Steven Michaud [:smichaud] (Retired)]

This is left over from when I was a Mozilla employee. I'll never get back to it.