This is a re-post from firefox-dev [3], in case anyone in dev-platform is aware
of historical context. Please follow-up here in dev.platform (I think it's
easier for users/mail-clients to jump into a newsgroup discussion than a
mailing list discussion)
The test page at [1] illustrates the current behavior of the "Prevent this page
from creating additional dialogs" checkbox. Here also is a brief description:
1) If a dialog is shown and fewer than "dom.successive_dialog_time_limit"
milliseconds have elapsed since the last dialog was closed, the "Prevent this
page from creating additional dialogs" checkbox is added to the dialog
2) If the user does not select the checkbox, go to 1
3) If the user does select the checkbox, then future dialogs on the page are
limited to a rate of 1 dialog per "dom.successive_dialog_time_limit"
milliseconds (e.g. two consecutive alert() calls may result in {failure,
success} if the first call occurs 2999ms after the last dialog closed, and the
second call occurs 1ms later. In this case, "failure" means that an exception
is thrown by alert())
This behavior is confusing to me - so confusing that I filed bug 910501 [2]
without realizing that this is intended behavior. As a user, I expect that a
checkbox labeled "Prevent this page from creating additional dialogs" will
prevent the page from creating ANY additional dialogs, and so I would (and did)
file a bug when that expectation isn't met. I think this is not just a wording
issue: I much prefer the ability to disable all dialogs on a page than the
ability to rate-limit dialogs on that page.
Of course, I don't speak for everyone, and I'm sure that there are reasons for
the current behavior. I propose that we change the behavior of the "Prevent
this page from creating additional dialogs" to prevent ALL subsequent dialogs
on the page, but I'm interested in hearing ideas/arguments supporting the
current behavior.
[1] https://bug856977.bugzilla.mozilla.org/attachment.cgi?id=806066
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=910501
[3] https://mail.mozilla.org/pipermail/firefox-dev/2013-September/000955.html
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