<html> <head> <base href="https://bugzilla.gnome.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - wayland: Warn when an application tries to map popup incorrectly" href="https://bugzilla.gnome.org/show_bug.cgi?id=770745#c9">Comment # 9</a> on <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - wayland: Warn when an application tries to map popup incorrectly" href="https://bugzilla.gnome.org/show_bug.cgi?id=770745">bug 770745</a> from <a href="page.cgi?id=describeuser.html&login=ericwill%40redhat.com" title="Eric Williams <ericwill@redhat.com>"> Eric Williams</a> <pre>(In reply to Jonas Ådahl from <a href="show_bug.cgi?id=770745#c7">comment #7</a>) > (In reply to Eric Williams from <a href="show_bug.cgi?id=770745#c6">comment #6</a>) > > What protocol does this violate? And why only on Wayland and not X11? > > The xdg-shell protocol. It doesn't violate anything on X11 because X11 is > more of a "you're on your own" windowing system, while Wayland is much less > so. > > > > > I am dealing with a bug in SWT that is related to this fix -- if you could > > explain the logic here it would help understand the issue further. > > The warning should happen when you map a popup (i.e. a popup menu that grabs > input) above some other window that is not the top most popup or the > toplevel. > > For example, lets say you have a toplevel window (e.g. the "main" window of > your application) and an already open popup menu with the toplevel as a > parent. Then you open another popup menu before closing the first one, but > the new popup menu also has the toplevel window as the parent. In xdg-shell > (the Wayland protocol that provides methods for creating "windows", "menus" > etc), this is now allowed, since that would mean two menus would "grab" the > same input device at the same time, which makes no sense. > > If you need to have multi level menus, what you need to do is to make sure > that each new child menu is mapped with the old top most child menu as > parent. If you are not using GtkMenu, you might be interested in <a class="bz_bug_link bz_status_NEW " title="NEW - Make gdk_window_move_to_rect() public" href="show_bug.cgi?id=791845">bug 791845</a>. Okay thanks, this was very helpful. We could definitely make use of that public API so I'll comment in that bug.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> </ul> </body> </html>