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exwm/exwm-manage.el
Chris Feng 4ac71a7ddc Add RandR support for docks and reuse workareas 
* exwm-workspace (exwm-workspace--update-struts): Add RandR support for
docks.

* exwm-workspace (exwm-workspace--workareas): New variable for storing
workareas.
(exwm-workspace--update-workareas): Update workareas and set
_NET_WORKAREA (replaces `exwm-workspace--set-workareas').
(exwm-workspace--set-fullscreen): Reuse workareas for
resizing and drop optional arguments.
(exwm-workspace--resize-minibuffer-frame)
(exwm-workspace--on-ConfigureNotify): Reuse workareas for
resizing/reposition the (optional) dedicated minibuffer frame.

* exwm-layout.el (exwm-layout-set-fullscreen): Do not use
`exwm-workspace--set-fullscreen' here.

* exwm-manage.el (exwm-manage--unmanage-window):
* exwm-randr.el (exwm-randr--refresh):
* exwm.el (exwm--update-struts-legacy, exwm--update-struts-partial):
Update workareas before resizing workspaces.

* exwm.el (exwm--update-struts-legacy, exwm--update-struts-partial):
Remove the corresponding record on receiving invalid struts.

* exwm-workspace.el (exwm-workspace--get-geometry): New utility
function for retrieving workspace geometry.
2016-07-16 14:34:57 +08:00

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;;; exwm-manage.el --- Window Management Module for -*- lexical-binding: t -*-
;;; EXWM
;; Copyright (C) 2015-2016 Free Software Foundation, Inc.
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This is the fundamental module of EXWM that deals with window management.
;;; Code:
(require 'exwm-core)
(defvar exwm-manage-finish-hook nil
"Normal hook run after a window is just managed, in the context of the
corresponding buffer.")
(defun exwm-manage--update-geometry (id &optional force)
"Update window geometry."
(with-current-buffer (exwm--id->buffer id)
(unless (and exwm--geometry (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry :drawable id))))
(when reply ;nil when destroyed
(setq exwm--geometry reply))))))
;; The _MOTIF_WM_HINTS atom (see <Xm/MwmUtil.h> for more details)
;; It's currently only used in 'exwm-manage' module
(defvar exwm-manage--_MOTIF_WM_HINTS nil "_MOTIF_WM_HINTS atom.")
(defun exwm-manage--update-mwm-hints (id &optional force)
"Update _MOTIF_WM_HINTS."
(with-current-buffer (exwm--id->buffer id)
(unless (and (not exwm--mwm-hints-decorations) (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:-GetProperty
:window id
:property exwm-manage--_MOTIF_WM_HINTS
:type exwm-manage--_MOTIF_WM_HINTS
:long-length 5))))
(when reply
;; Check MotifWmHints.decorations.
(with-slots (value) reply
(setq value (append value nil))
(when (and value
;; See <Xm/MwmUtil.h> for fields definitions.
(/= 0 (logand
(elt value 0) ;MotifWmHints.flags
2)) ;MWM_HINTS_DECORATIONS
(= 0
(elt value 2))) ;MotifWmHints.decorations
(setq exwm--mwm-hints-decorations nil))))))))
(defun exwm-manage--set-client-list ()
"Set _NET_CLIENT_LIST."
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_CLIENT_LIST
:window exwm--root
:data (vconcat (mapcar #'car exwm--id-buffer-alist)))))
(defvar exwm-workspace--current)
(defvar exwm-workspace--switch-history-outdated)
(defvar exwm-workspace-current-index)
(declare-function exwm--update-window-type "exwm.el" (id &optional force))
(declare-function exwm--update-class "exwm.el" (id &optional force))
(declare-function exwm--update-transient-for "exwm.el" (id &optional force))
(declare-function exwm--update-normal-hints "exwm.el" (id &optional force))
(declare-function exwm--update-title "exwm.el" (id))
(declare-function exwm--update-hints "exwm.el" (id &optional force))
(declare-function exwm--update-protocols "exwm.el" (id &optional force))
(declare-function exwm--update-struts "exwm.el" (id))
(declare-function exwm-floating--set-floating "exwm-floating.el" (id))
(declare-function exwm-floating--unset-floating "exwm-floating.el" (id))
(declare-function exwm-workspace--set-desktop "exwm-workspace.el" (id))
(defun exwm-manage--manage-window (id)
"Manage window ID."
(exwm--log "Try to manage #x%x" id)
(catch 'return
;; Ensure it's alive
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask exwm--client-event-mask))
(throw 'return 'dead))
(with-current-buffer (generate-new-buffer "*EXWM*")
;; Keep the oldest X window first.
(setq exwm--id-buffer-alist
(nconc exwm--id-buffer-alist `((,id . ,(current-buffer)))))
(exwm-mode)
(setq exwm--id id)
(exwm--update-window-type id)
(exwm--update-class id)
(exwm--update-transient-for id)
(exwm--update-normal-hints id)
(exwm--update-hints id)
(exwm-manage--update-geometry id)
(exwm-manage--update-mwm-hints id)
;; No need to manage (please check OverrideRedirect outside)
(when (or
(not
(or (not exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_NORMAL exwm-window-type)))
;; Check the _MOTIF_WM_HINTS property.
(and (not exwm--mwm-hints-decorations)
(not exwm--hints-input)
;; Floating windows only
(or exwm-transient-for exwm--fixed-size
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY
exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG
exwm-window-type))))
(exwm--log "No need to manage #x%x" id)
;; Update struts.
(when (memq xcb:Atom:_NET_WM_WINDOW_TYPE_DOCK exwm-window-type)
(exwm--update-struts id))
;; Remove all events
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask
(if (memq xcb:Atom:_NET_WM_WINDOW_TYPE_DOCK
exwm-window-type)
;; Listen for PropertyChange (struts) and
;; UnmapNotify/DestroyNotify event of the dock.
exwm--client-event-mask
xcb:EventMask:NoEvent)))
;; The window needs to be mapped
(xcb:+request exwm--connection
(make-instance 'xcb:MapWindow :window id))
(with-slots (x y width height) exwm--geometry
;; Reparent to virtual root
(unless (or (memq xcb:Atom:_NET_WM_WINDOW_TYPE_DESKTOP
exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DOCK
exwm-window-type))
(let ((frame-geometry (frame-parameter exwm-workspace--current
'exwm-geometry))
(workspace (frame-parameter exwm-workspace--current
'exwm-workspace)))
(when (and frame-geometry
(/= x 0)
(/= y 0))
(setq x (- x (slot-value frame-geometry 'x))
y (- y (slot-value frame-geometry 'y))))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id
:parent workspace
:x x :y y))))
;; Center window of type _NET_WM_WINDOW_TYPE_SPLASH
(when (memq xcb:Atom:_NET_WM_WINDOW_TYPE_SPLASH exwm-window-type)
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window id
:value-mask (eval-when-compile
(logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y))
:x (/ (- (exwm-workspace--current-width) width)
2)
:y (/ (- (exwm-workspace--current-height)
height)
2)))))
(xcb:flush exwm--connection)
(setq exwm--id-buffer-alist (assq-delete-all id exwm--id-buffer-alist))
(let ((kill-buffer-query-functions nil))
(kill-buffer (current-buffer)))
(throw 'return 'ignored))
;; Manage the window
(exwm--log "Manage #x%x" id)
;; Create a new container as the parent of this X window
(setq exwm--container (xcb:generate-id exwm--connection))
(xcb:+request exwm--connection
(make-instance 'xcb:CreateWindow
:depth 0 :wid exwm--container
:parent (frame-parameter exwm-workspace--current
'exwm-workspace)
:x 0 :y 0 :width 1 :height 1 :border-width 0
:class xcb:WindowClass:CopyFromParent
:visual 0 ;CopyFromParent
:value-mask (logior xcb:CW:OverrideRedirect
xcb:CW:EventMask)
:override-redirect 1
:event-mask xcb:EventMask:SubstructureRedirect))
(exwm--debug
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WM_NAME
:window exwm--container
:data (format "EXWM container for 0x%x" id))))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id :parent exwm--container :x 0 :y 0))
(xcb:+request exwm--connection ;remove border
(make-instance 'xcb:ConfigureWindow
:window id :value-mask xcb:ConfigWindow:BorderWidth
:border-width 0))
(dolist (button ;grab buttons to set focus / move / resize
(list xcb:ButtonIndex:1 xcb:ButtonIndex:2 xcb:ButtonIndex:3))
(xcb:+request exwm--connection
(make-instance 'xcb:GrabButton
:owner-events 0 :grab-window id
:event-mask xcb:EventMask:ButtonPress
:pointer-mode xcb:GrabMode:Sync
:keyboard-mode xcb:GrabMode:Async
:confine-to xcb:Window:None :cursor xcb:Cursor:None
:button button :modifiers xcb:ModMask:Any)))
(exwm-manage--set-client-list)
(xcb:flush exwm--connection)
(exwm--update-title id)
(exwm--update-protocols id)
(if (or exwm-transient-for exwm--fixed-size
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG exwm-window-type))
(exwm-floating--set-floating id)
(exwm-floating--unset-floating id))
(exwm-input-grab-keyboard id)
(setq exwm-workspace--switch-history-outdated t)
;; Set _NET_WM_DESKTOP or move window.
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:ewmh:get-_NET_WM_DESKTOP
:window id)))
desktop)
(when reply
(setq desktop (slot-value reply 'value)))
(if (and desktop (/= desktop exwm-workspace-current-index))
(exwm-workspace-move-window desktop id)
(exwm-workspace--set-desktop id)))
(with-current-buffer (exwm--id->buffer id)
(run-hooks 'exwm-manage-finish-hook)))))
(defvar exwm-workspace--id-struts-alist)
(defvar exwm-workspace--list)
(declare-function exwm-workspace--update-struts "exwm-workspace.el" ())
(declare-function exwm-workspace--update-workareas "exwm-workspace.el" ())
(declare-function exwm-workspace--set-fullscreen "exwm-workspace.el" (frame))
(defun exwm-manage--unmanage-window (id &optional withdraw-only)
"Unmanage window ID.
If WITHDRAW-ONLY is non-nil, the X window will be properly placed back to the
root window. Set WITHDRAW-ONLY to 'quit if this functions is used when window
manager is shutting down."
(let ((buffer (exwm--id->buffer id)))
(exwm--log "Unmanage #x%x (buffer: %s, widthdraw: %s)"
id buffer withdraw-only)
(setq exwm--id-buffer-alist (assq-delete-all id exwm--id-buffer-alist))
;; Update workspaces when a dock is destroyed.
(when (assq id exwm-workspace--id-struts-alist)
(setq exwm-workspace--id-struts-alist
(assq-delete-all id exwm-workspace--id-struts-alist))
(exwm-workspace--update-struts)
(exwm-workspace--update-workareas)
(dolist (f exwm-workspace--list)
(exwm-workspace--set-fullscreen f)))
(when (buffer-live-p buffer)
(with-current-buffer buffer
;; Flickering seems unavoidable here if the DestroyWindow request is
;; not initiated by us.
;; What we can do is to hide the its container ASAP.
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window exwm--container))
(xcb:flush exwm--connection)
;; Unmap the X window.
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window id))
;;
(setq exwm-workspace--switch-history-outdated t)
;;
(when withdraw-only
;; Reparent back to root
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(let (x y geometry geometry-parent)
(if (not exwm--floating-frame)
(setq x 0 y 0) ;the position does not matter
(setq geometry-parent
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable exwm--container))
geometry (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable id)))
(if (not (and geometry-parent geometry))
(setq x 0 y 0) ;e.g. have been destroyed
(setq x (+ (slot-value geometry-parent 'x)
(slot-value geometry 'x))
y (+ (slot-value geometry-parent 'y)
(slot-value geometry 'y)))))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id :parent exwm--root :x x :y y)))
;; Delete WM_STATE property
(xcb:+request exwm--connection
(make-instance 'xcb:DeleteProperty
:window id :property xcb:Atom:WM_STATE))
(unless (eq withdraw-only 'quit)
;; Remove _NET_WM_DESKTOP.
(xcb:+request exwm--connection
(make-instance 'xcb:DeleteProperty
:window id
:property xcb:Atom:_NET_WM_DESKTOP))))
(when exwm--floating-frame
;; Unmap the floating frame before destroying the containers.
(let ((window (frame-parameter exwm--floating-frame 'exwm-outer-id)))
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window window))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window window :parent exwm--root :x 0 :y 0))))
;; Restore the workspace if this X window is currently fullscreen.
(when exwm--fullscreen
(exwm-workspace--set-fullscreen exwm--frame))
;; Destroy the X window container (and the frame container if any).
(xcb:+request exwm--connection
(make-instance 'xcb:DestroyWindow :window exwm--container))
(let ((kill-buffer-query-functions nil)
(floating exwm--floating-frame))
(kill-buffer)
(when floating
(select-window
(frame-selected-window exwm-workspace--current)))))
(exwm-manage--set-client-list)
(xcb:flush exwm--connection))))
(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))))
(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))
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window i))
(xcb:flush exwm--connection)
(exwm-manage--manage-window i))))))
(defvar exwm-manage--ping-lock nil
"Non-nil indicates EXWM is pinging a window.")
(defvar exwm-manage-ping-timeout 3 "Seconds to wait before killing a client.")
(defun exwm-manage--kill-buffer-query-function ()
"Run in `kill-buffer-query-functions'."
(catch 'return
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:MapWindow :window exwm--id))
;; The X window is no longer alive so just close the buffer.
;; Destroy the container.
;; Hide the container to prevent flickering.
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window exwm--container))
(xcb:flush exwm--connection)
(when exwm--floating-frame
(let ((window (frame-parameter exwm--floating-frame 'exwm-outer-id)))
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window window))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window window
:parent exwm--root
:x 0 :y 0))))
(xcb:+request exwm--connection
(make-instance 'xcb:DestroyWindow :window exwm--container))
(xcb:flush exwm--connection)
(throw 'return t))
(unless (memq xcb:Atom:WM_DELETE_WINDOW exwm--protocols)
;; The X window does not support WM_DELETE_WINDOW; destroy it.
;; Hide the container to prevent flickering.
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window exwm--container))
(xcb:+request exwm--connection
(make-instance 'xcb:DestroyWindow :window exwm--id))
(xcb:flush exwm--connection)
;; Wait for DestroyNotify event.
(throw 'return nil))
(let ((id exwm--id))
;; Try to close the X window with WM_DELETE_WINDOW client message.
(xcb:+request exwm--connection
(make-instance 'xcb:icccm:SendEvent
:destination id
:event (xcb:marshal
(make-instance 'xcb:icccm:WM_DELETE_WINDOW
:window id)
exwm--connection)))
(xcb:flush exwm--connection)
;;
(unless (memq xcb:Atom:_NET_WM_PING exwm--protocols)
;; The window does not support _NET_WM_PING. To make sure it'll die,
;; kill it after the time runs out.
;; Hide the container to prevent flickering.
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window exwm--container))
(xcb:flush exwm--connection)
(run-with-timer exwm-manage-ping-timeout nil
`(lambda () (exwm-manage--kill-client ,id)))
;; Wait for DestroyNotify event.
(throw 'return nil))
;; Try to determine if the X window is dead with _NET_WM_PING.
(setq exwm-manage--ping-lock t)
(xcb:+request exwm--connection
(make-instance 'xcb:SendEvent
:propagate 0
:destination id
:event-mask xcb:EventMask:NoEvent
:event (xcb:marshal
(make-instance 'xcb:ewmh:_NET_WM_PING
:window id
:timestamp 0
:client-window id)
exwm--connection)))
(xcb:flush exwm--connection)
(with-timeout (exwm-manage-ping-timeout
(if (yes-or-no-p (format "'%s' is not responding. \
Would you like to kill it? "
(buffer-name)))
(progn (exwm-manage--kill-client id)
;; Kill the unresponsive X window and
;; wait for DestroyNotify event.
(throw 'return nil))
;; Give up.
(throw 'return nil)))
(while (and exwm-manage--ping-lock
(exwm--id->buffer id)) ;may have been destroyed.
(accept-process-output nil 0.1))
;; Give up.
(throw 'return nil)))))
(defun exwm-manage--kill-client (&optional id)
"Kill an X client."
(unless id (setq id (exwm--buffer->id (current-buffer))))
;; Hide the container to prevent flickering.
(let ((buffer (exwm--id->buffer id)))
(when buffer
(with-current-buffer buffer
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window exwm--container))
(xcb:flush exwm--connection))))
(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)))
(request (make-instance 'xcb:KillClient :resource id)))
(if (not pid)
(xcb:+request exwm--connection request)
;; What if the PID is fake/wrong?
(signal-process pid 'SIGKILL)
;; Ensure it's dead
(run-with-timer exwm-manage-ping-timeout nil
`(lambda ()
(xcb:+request exwm--connection ,request))))
(xcb:flush exwm--connection)))
;; FIXME: Make the following values as small as possible.
(defconst exwm-manage--width-delta-min 5)
(defconst exwm-manage--height-delta-min 5)
(defun exwm-manage--on-ConfigureRequest (data _synthetic)
"Handle ConfigureRequest event."
(let ((obj (make-instance 'xcb:ConfigureRequest))
buffer edges width-delta height-delta)
(xcb:unmarshal obj data)
(with-slots (window x y width height
border-width sibling stack-mode value-mask)
obj
(exwm--log "ConfigureRequest from #x%x (#x%x) @%dx%d%+d%+d; \
border-width: %d; sibling: #x%x; stack-mode: %d"
window value-mask width height x y
border-width sibling stack-mode)
(if (and (setq buffer (exwm--id->buffer window))
(with-current-buffer buffer
(or exwm--fullscreen
;; Make sure it's a floating X window wanting to resize
;; itself.
(or (not exwm--floating-frame)
(progn
(setq edges
(window-inside-pixel-edges
(get-buffer-window buffer t))
width-delta (- width (- (elt edges 2)
(elt edges 0)))
height-delta (- height (- (elt edges 3)
(elt edges 1))))
;; We cannot do resizing precisely for now.
(and (if (= 0 (logand value-mask
xcb:ConfigWindow:Width))
t
(< (abs width-delta)
exwm-manage--width-delta-min))
(if (= 0 (logand value-mask
xcb:ConfigWindow:Height))
t
(< (abs height-delta)
exwm-manage--height-delta-min))))))))
;; Send client message for managed windows
(with-current-buffer buffer
(setq edges
(if exwm--fullscreen
(list 0 0
(exwm-workspace--current-width)
(exwm-workspace--current-height))
(window-inside-absolute-pixel-edges
(get-buffer-window buffer t))))
(exwm--log "Reply with ConfigureNotify (edges): %s" edges)
(xcb:+request exwm--connection
(make-instance 'xcb:SendEvent
:propagate 0 :destination window
:event-mask xcb:EventMask:StructureNotify
:event (xcb:marshal
(make-instance
'xcb:ConfigureNotify
:event window :window window
:above-sibling xcb:Window:None
:x (elt edges 0) :y (elt edges 1)
:width (- (elt edges 2) (elt edges 0))
:height (- (elt edges 3) (elt edges 1))
:border-width 0 :override-redirect 0)
exwm--connection))))
(if buffer
(with-current-buffer buffer
(exwm--log "ConfigureWindow (resize floating X window)")
(when (and (/= 0 (logand value-mask xcb:ConfigWindow:Width))
(>= (abs width-delta) exwm-manage--width-delta-min))
(set-frame-width exwm--floating-frame
(+ (frame-pixel-width exwm--floating-frame)
width-delta)
nil t))
(when (and (/= 0 (logand value-mask xcb:ConfigWindow:Height))
(>= (abs height-delta) exwm-manage--height-delta-min))
(set-frame-height exwm--floating-frame
(+ (frame-pixel-height exwm--floating-frame)
height-delta)
nil t)))
(exwm--log "ConfigureWindow (preserve geometry)")
;; Configure the unmanaged window.
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window window
:value-mask value-mask
:x x :y y :width width :height height
:border-width border-width
:sibling sibling
:stack-mode stack-mode))))))
(xcb:flush exwm--connection))
(declare-function exwm-layout--iconic-state-p "exwm-layout.el" (&optional id))
(defun exwm-manage--on-MapRequest (data _synthetic)
"Handle MapRequest event."
(let ((obj (make-instance 'xcb:MapRequest)))
(xcb:unmarshal obj data)
(with-slots (parent window) obj
(if (assoc window exwm--id-buffer-alist)
(with-current-buffer (exwm--id->buffer window)
(if (exwm-layout--iconic-state-p)
;; State change: iconic => normal.
(when (eq exwm--frame exwm-workspace--current)
(set-window-buffer (frame-selected-window exwm--frame)
(current-buffer))
(select-window (frame-selected-window exwm--frame)))
(exwm--log "#x%x is already managed" window)))
(if (/= exwm--root parent)
(progn (xcb:+request exwm--connection
(make-instance 'xcb:MapWindow :window window))
(xcb:flush exwm--connection))
(exwm--log "MapRequest from #x%x" window)
(exwm-manage--manage-window window))))))
(defun exwm-manage--on-UnmapNotify (data _synthetic)
"Handle UnmapNotify event."
(let ((obj (make-instance 'xcb:UnmapNotify)))
(xcb:unmarshal obj data)
(with-slots (window) obj
(exwm--log "UnmapNotify from #x%x" window)
(exwm-manage--unmanage-window window t))))
(defun exwm-manage--on-DestroyNotify (data synthetic)
"Handle DestroyNotify event."
(unless synthetic
(let ((obj (make-instance 'xcb:DestroyNotify)))
(xcb:unmarshal obj data)
(exwm--log "DestroyNotify from #x%x" (slot-value obj 'window))
(exwm-manage--unmanage-window (slot-value obj 'window)))))
(defun exwm-manage--init ()
"Initialize manage module."
;; Intern _MOTIF_WM_HINTS
(let ((atom-name "_MOTIF_WM_HINTS"))
(setq exwm-manage--_MOTIF_WM_HINTS
(slot-value (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:InternAtom
:only-if-exists 0
:name-len (length atom-name)
:name atom-name))
'atom)))
(xcb:+event exwm--connection 'xcb:ConfigureRequest
#'exwm-manage--on-ConfigureRequest)
(xcb:+event exwm--connection 'xcb:MapRequest #'exwm-manage--on-MapRequest)
(xcb:+event exwm--connection 'xcb:UnmapNotify #'exwm-manage--on-UnmapNotify)
(xcb:+event exwm--connection 'xcb:DestroyNotify
#'exwm-manage--on-DestroyNotify))
(defun exwm-manage--exit ()
"Exit the manage module."
(setq exwm-manage--_MOTIF_WM_HINTS nil))
(provide 'exwm-manage)
;;; exwm-manage.el ends here
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