304200 - Fix modal alert nesting issues

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[Simon Fraser [no longer active]]

We currently have issues when event handlers can spawn alerts that may result in
recursive modal windows (see bug 303484, bug 300057).

One way to fix this would be to enforce some rules on the spawning of modal windows:

Any given window can have at most a single modal child window at any one time.
A window can only invoke a modal child on itself, not on any existing child or
other window.
Modal windows can be nested, but only up to some maximum depth (fix from bug
303484).

This would require tracking the originating window for a modal window request,
which I'm not sure we can do currently (since we may lose track of the
originating window for things like synthetic mouse moves posted to the youngest
event queue).

Comment 1

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046

Move all DOM bugs that haven't been updated in more than 3 years and has no one currently assigned to P5.

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