Respect FocusIn/Out mode in a hacky way

[iacore]

Attempt to recreate different focus "mode" with Xlib API. Works good enough.

@DemiMarie

[DemiMarie]

Does this have any remaining bugs that you are aware of?

[iacore]

No. I haven't used this separated patch though.

This still gets confused when VM transfer focus among its windows.

[iacore]

This is still buggy. When window is killed with keyboard shortcut, Mouse focus is grabbed, but never returned.

[DemiMarie]

Does e0265cd fix it?

[iacore]

Not entirely. I don't know much about how server-client tracks mapped windows. I only know about the X part.

The current issue is only that in AppVM 1, sometimes the focused window is destroyed (without user interaction), then the focus is transfered to another window in AppVM 2 (because it was previously focused in dom0), but AppVM 2 don't think it has focus.

Sadly, in a single AppVM, if there are three windows, the server may think (focus transfer) "A -> B", but the client thinks "A -> C". This is up to the window manager to decide what to focus after window "A" is destroyed, and we have 2 WM+X server.

I don't know how to fix this other than being the X server itself, and use custom WM/X server that is meant to be nested (don't know if we need XFCE4 inside AppVM). We should probably retire the current gui-proxy-thingy for a proper solution (custom X server). That would get other benefits like supporting multiple input devices of the same kind.

[DemiMarie]

I don't know how to fix this other than being the X server itself, and use custom WM/X server that is meant to be nested (don't know if we need XFCE4 inside AppVM). We should probably retire the current gui-proxy-thingy for a proper solution (custom X server). That would get other benefits like supporting multiple input devices of the same kind.

@locriacyber: What about having a dummy window that is given focus whenever a window loses focus?
@marmarek: Am I correct that a custom X server is out of the question?

[iacore]

What about having a dummy window that is given focus whenever a window loses focus?
Users probably expect to have focus returned to last window they used (when a window is closed).

[DemiMarie]

What about having a dummy window that is given focus whenever a window loses focus?

Users probably expect to have focus returned to last window they used (when a window is closed).

My thought was that this window would get a FocusIn event from the GUI daemon if it belonged to the same qube. Otherwise, it is better for no window to have focus.

[marmarek]

@locriacyber: What about having a dummy window that is given focus whenever a window loses focus?

I think gui-agent already does something like this. Look for g->stub_win usage.

[iacore]

Superseded by #169