91508 - Linux needs to implement nsWindow::PlaceBehind()

Status: NEW

(Core :: Web Painting, defect)

Description

[Eric Pollmann]

In order for z-index ordering of iframes to work on Linux (Gtk),
nsWindow::PlaceBehind() needs to be implemented there.

This is a followup for bug 43410, which is already fixed for both Windows and Mac.

Comment 1

[Eric Pollmann]

The only hints I could find on this were:

http://mail.gnome.org/archives/gtk-app-devel-list/2000-December/msg00068.htmlHide 
> all the widgets except the topmost. Use an array to store the
> pointers to the widgets and show the one after an other. while circling
> through the list (gtk_widget_show() / gtk_widget_hide() )

I came up with a patch based on this advice, but it also did not seem to have
any effect.  I'll attach the patch anyway, in case it will save any work...

Comment 2

[Eric Pollmann]

Attachment: attempt at patch 1 (does not work)

Comment 3

[Mats Palmgren (inactive)]

Attachment: Testcase

Comment 4

[Mats Palmgren (inactive)]

Attachment: Better testcase

Comment 5

[Mats Palmgren (inactive)]

The testcase WFM in Firefox trunk, 2.0.0.4 and 1.5.0.12 on Ubuntu-fesity.

Comment 6

[Mats Palmgren (inactive)]

GTK2 does not implement PlaceBehind():
http://bonsai.mozilla.org/cvsblame.cgi?file=/mozilla/widget/src/gtk2/nsWindow.cpp&rev=1.221&root=/cvsroot&mark=625-631#625
but it doesn't seem to be necessary either, at least not for the attached testcases.