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Improve code robustness.

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* exwm-layout.el (exwm-layout-unset-fullscreen)
	(exwm-layout-set-fullscreen): Use `user-error' rather than
	`cl-assert'.
	* exwm-input.el (exwm-input--set-focus): Silently accept unknown
	ids. (exwm-input--grab-keyboard) (exwm-input--release-keyboard):
        Silently ignore calls for windows that have no buffer.
	* exwm-manage.el (exwm-manage--kill-client): Don't throw error
	when trying to kill a vanished window.
This commit is contained in:
Philip 2015-08-16 18:53:04 +00:00
parent d998b42b89
commit d1806e9188
3 changed files with 45 additions and 43 deletions
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75
exwm-input.el
View file

@ -56,26 +56,27 @@ It's updated in several occasions, and only used by `exwm-input--set-focus'.")
(defun exwm-input--set-focus (id)
"Set input focus to window ID in a proper way."
(with-current-buffer (exwm--id->buffer id)
(if (and (not exwm--hints-input)
(memq xcb:Atom:WM_TAKE_FOCUS exwm--protocols))
(progn
(exwm--log "Focus on #x%x with WM_TAKE_FOCUS" id)
(xcb:+request exwm--connection
(make-instance 'xcb:icccm:SendEvent
:destination id
:event (xcb:marshal
(make-instance 'xcb:icccm:WM_TAKE_FOCUS
:window id
:time
exwm-input--timestamp)
exwm--connection))))
(exwm--log "Focus on #x%x with SetInputFocus" id)
(xcb:+request exwm--connection
(make-instance 'xcb:SetInputFocus
:revert-to xcb:InputFocus:Parent :focus id
:time xcb:Time:CurrentTime)))
(xcb:flush exwm--connection)))
(when (exwm--id->buffer id)
(with-current-buffer (exwm--id->buffer id)
(if (and (not exwm--hints-input)
(memq xcb:Atom:WM_TAKE_FOCUS exwm--protocols))
(progn
(exwm--log "Focus on #x%x with WM_TAKE_FOCUS" id)
(xcb:+request exwm--connection
(make-instance 'xcb:icccm:SendEvent
:destination id
:event (xcb:marshal
(make-instance 'xcb:icccm:WM_TAKE_FOCUS
:window id
:time
exwm-input--timestamp)
exwm--connection))))
(exwm--log "Focus on #x%x with SetInputFocus" id)
(xcb:+request exwm--connection
(make-instance 'xcb:SetInputFocus
:revert-to xcb:InputFocus:Parent :focus id
:time xcb:Time:CurrentTime)))
(xcb:flush exwm--connection))))
(defvar exwm-input--focus-window nil "The (Emacs) window to be focused.")
(defvar exwm-input--redirected nil
@ -311,27 +312,27 @@ It's updated in several occasions, and only used by `exwm-input--set-focus'.")
(defun exwm-input--grab-keyboard (&optional id)
"Grab all key events on window ID."
(unless id (setq id (exwm--buffer->id (window-buffer))))
(cl-assert id)
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:GrabKey
:owner-events 0 :grab-window id
:modifiers xcb:ModMask:Any
:key xcb:Grab:Any
:pointer-mode xcb:GrabMode:Async
:keyboard-mode xcb:GrabMode:Async))
(exwm--log "Failed to grab keyboard for #x%x" id))
(setq exwm--on-KeyPress 'exwm-input--on-KeyPress-line-mode))
(when id
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:GrabKey
:owner-events 0 :grab-window id
:modifiers xcb:ModMask:Any
:key xcb:Grab:Any
:pointer-mode xcb:GrabMode:Async
:keyboard-mode xcb:GrabMode:Async))
(exwm--log "Failed to grab keyboard for #x%x" id))
(setq exwm--on-KeyPress 'exwm-input--on-KeyPress-line-mode)))
(defun exwm-input--release-keyboard (&optional id)
"Ungrab all key events on window ID."
(unless id (setq id (exwm--buffer->id (window-buffer))))
(cl-assert id)
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:UngrabKey
:key xcb:Grab:Any :grab-window id
:modifiers xcb:ModMask:Any))
(exwm--log "Failed to release keyboard for #x%x" id))
(setq exwm--on-KeyPress 'exwm-input--on-KeyPress-char-mode))
(when id
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:UngrabKey
:key xcb:Grab:Any :grab-window id
:modifiers xcb:ModMask:Any))
(exwm--log "Failed to release keyboard for #x%x" id))
(setq exwm--on-KeyPress 'exwm-input--on-KeyPress-char-mode)))
(defun exwm-input-grab-keyboard (&optional id)
"Switch to line-mode."

6
exwm-layout.el
View file

@ -93,6 +93,8 @@
"Make window ID fullscreen."
(interactive)
(with-current-buffer (if id (exwm--id->buffer id) (window-buffer))
(when exwm--fullscreen
(user-error "Already in full-screen mode."))
;; Set the floating frame fullscreen first when the client is floating
(when exwm--floating-frame
(let* ((outer-id (frame-parameter exwm--floating-frame 'exwm-outer-id))
@ -130,7 +132,6 @@
:window exwm--id
:data (vector xcb:Atom:_NET_WM_STATE_FULLSCREEN)))
(xcb:flush exwm--connection)
(cl-assert (not exwm--fullscreen))
(setq exwm--fullscreen t)
(exwm-input-release-keyboard)))
@ -138,6 +139,8 @@
"Restore window from fullscreen state."
(interactive)
(with-current-buffer (if id (exwm--id->buffer id) (window-buffer))
(unless exwm--fullscreen
(user-error "Not in full-screen mode."))
;; Restore the floating frame if the client is floating
(when exwm--floating-frame
(xcb:+request exwm--connection
@ -156,7 +159,6 @@
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WM_STATE :window exwm--id :data []))
(xcb:flush exwm--connection)
(cl-assert exwm--fullscreen)
(setq exwm--fullscreen nil)
(exwm-input-grab-keyboard)))

7
exwm-manage.el
View file

@ -260,10 +260,9 @@ corresponding buffer.")
"Kill an X client."
(interactive)
(unless id (setq id (exwm--buffer->id (current-buffer))))
(let ((pid (slot-value
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:ewmh:get-_NET_WM_PID :window id))
'value)))
(let* ((response (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:ewmh:get-_NET_WM_PID :window id)))
(pid (and response (slot-value response 'value))))
(if pid
(signal-process pid 'SIGKILL)
(xcb:+request exwm--connection