6d8293a422
As per commit f71151a5 we focus an input window if no take-focus-window accepts it. This might lead to an infinite loop if there are various focusable but non-input windows in the stack. When the current focus window is unmanaging and we're trying to focus a WM_TAKE_FOCUS window, we intent to give the focus to the first focusable input window in the stack. However, if an application (such as the Java ones) only uses non-input WM_TAKE_FOCUS windows, are not requesting these ones to get the focus. This might lead to a state where no window is focused, or a wrong one is. So, instead of only focus the first eventually input window available, try to request to all the take-focus windows that are in the stack between the destroyed one and the first input one to acquire the input focus. Use a queue to keep track of those windows, that is passed around stealing ownership, while we protect for unmanaged queued windows. Also, reduce the default timeout value, as the previous one might lead to an excessive long wait. Added metatests verifying these situations. Closes: https://gitlab.gnome.org/GNOME/mutter/issues/660 https://gitlab.gnome.org/GNOME/mutter/merge_requests/669
Mutter
Mutter is a Wayland display server and X11 window manager and compositor library.
When used as a Wayland display server, it runs on top of KMS and libinput. It implements the compositor side of the Wayland core protocol as well as various protocol extensions. It also has functionality related to running X11 applications using Xwayland.
When used on top of Xorg it acts as a X11 window manager and compositing manager.
It contains functionality related to, among other things, window management, window compositing, focus tracking, workspace management, keybindings and monitor configuration.
Internally it uses a fork of Cogl, a hardware acceleration abstraction library used to simplify usage of OpenGL pipelines, as well as a fork af Clutter, a scene graph and user interface toolkit.
Mutter is used by, for example, GNOME Shell, the GNOME core user interface, and by Gala, elementary OS's window manager. It can also be run standalone, using the command "mutter", but just running plain mutter is only intended for debugging purposes.
Contributing
To contribute, open merge requests at https://gitlab.gnome.org/GNOME/mutter.
The coding style used is primarily the GNU flavor of the GNOME coding
style
with some minor additions such as preferring stdint.h types over GLib
fundamental types, and a soft 80 character line limit. However, in general,
look at the file you're editing for inspiration.
Commit messages should follow the GNOME commit message guidelines. We require an URL to either an issue or a merge request in each commit.
License
Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.