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* exwm-manage.el (exwm-manage--scan): Check for possibly

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destroyed child.
This commit is contained in:
Chris Feng 2016-08-12 19:19:58 +08:00
parent db5128c1b9
commit 6bd85db300
1 changed files with 16 additions and 9 deletions
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21
exwm-manage.el
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@ -389,16 +389,23 @@ manager is shutting down."
(defun exwm-manage--scan ()
"Search for existing windows and try to manage them."
(let* ((tree (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:QueryTree :window exwm--root))))
(make-instance 'xcb:QueryTree
:window exwm--root)))
reply)
(dolist (i (slot-value tree 'children))
(with-slots (override-redirect map-state)
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetWindowAttributes :window i))
(when (and (= 0 override-redirect) (= xcb:MapState:Viewable map-state))
(setq reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetWindowAttributes
:window i)))
;; It's possible the X window has been destroyed.
(when reply
(with-slots (override-redirect map-state) reply
(when (and (= 0 override-redirect)
(= xcb:MapState:Viewable map-state))
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window i))
(make-instance 'xcb:UnmapWindow
:window i))
(xcb:flush exwm--connection)
(exwm-manage--manage-window i))))))
(exwm-manage--manage-window i)))))))
(defvar exwm-manage--ping-lock nil
"Non-nil indicates EXWM is pinging a window.")