chore(3p/emacs/exwm): Import from commit '0368127976bda29d35eed788edfe74644ecd3845' r/1871

Imported from https://github.com/ch11ng/exwm/commit/0368127976bda29d35eed788edfe74644ecd3845

git-subtree-dir: third_party/emacs/exwm
git-subtree-mainline: e84f9ef0adb48db610fd06d6ff75edd073712a90
git-subtree-split: 0368127976bda29d35eed788edfe74644ecd3845
Change-Id: Id3af5610254180f42947d71265aad89def7c6a3d

1 files changed, 1750 insertions, 0 deletions

diff --git a/third_party/emacs/exwm/exwm-workspace.el b/third_party/emacs/exwm/exwm-workspace.el
new file mode 100644
index 000000000000..cff17f3a113a
--- /dev/null
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+;;; exwm-workspace.el --- Workspace Module for EXWM  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015-2020 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 module adds workspace support for EXWM.
+
+;;; Code:
+
+(require 'server)
+
+(require 'exwm-core)
+
+(defgroup exwm-workspace nil
+  "Workspace."
+  :version "25.3"
+  :group 'exwm)
+
+(defcustom exwm-workspace-switch-hook nil
+  "Normal hook run after switching workspace."
+  :type 'hook)
+
+(defcustom exwm-workspace-list-change-hook nil
+  "Normal hook run when the workspace list is changed (workspace added,
+deleted, moved, etc)."
+  :type 'hook)
+
+(defcustom exwm-workspace-show-all-buffers nil
+  "Non-nil to show buffers on other workspaces."
+  :type 'boolean)
+
+(defcustom exwm-workspace-warp-cursor nil
+  "Non-nil to warp cursor automatically after workspace switch."
+  :type 'boolean)
+
+(defcustom exwm-workspace-number 1
+  "Initial number of workspaces."
+  :type 'integer)
+
+(defcustom exwm-workspace-index-map #'number-to-string
+  "Function for mapping a workspace index to a string for display.
+
+By default `number-to-string' is applied which yields 0 1 2 ... ."
+  :type 'function)
+
+(defcustom exwm-workspace-minibuffer-position nil
+  "Position of the minibuffer frame.
+
+A restart is required for this change to take effect."
+  :type '(choice (const :tag "Bottom (fixed)" nil)
+                 (const :tag "Bottom (auto-hide)" bottom)
+                 (const :tag "Top (auto-hide)" top)))
+
+(defcustom exwm-workspace-display-echo-area-timeout 1
+  "Timeout for displaying echo area."
+  :type 'integer)
+
+(defcustom exwm-workspace-switch-create-limit 10
+  "Number of workspaces `exwm-workspace-switch-create' allowed to create
+each time."
+  :type 'integer)
+
+(defvar exwm-workspace-current-index 0 "Index of current active workspace.")
+
+(defvar exwm-workspace--attached-minibuffer-height 0
+  "Height (in pixel) of the attached minibuffer.
+
+If the minibuffer is detached, this value is 0.")
+
+(defvar exwm-workspace--client nil
+  "The 'client' frame parameter of emacsclient frames.")
+
+(defvar exwm-workspace--create-silently nil
+  "When non-nil workspaces are created in the background (not switched to).
+
+Please manually run the hook `exwm-workspace-list-change-hook' afterwards.")
+
+(defvar exwm-workspace--current nil "Current active workspace.")
+
+(defvar exwm-workspace--display-echo-area-timer nil
+  "Timer for auto-hiding echo area.")
+
+(defvar exwm-workspace--id-struts-alist nil "Alist of X window and struts.")
+
+(defvar exwm-workspace--fullscreen-frame-count 0
+  "Count the fullscreen workspace frames.")
+
+(defvar exwm-workspace--list nil "List of all workspaces (Emacs frames).")
+
+(defvar exwm-workspace--minibuffer nil
+  "The minibuffer frame shared among all frames.")
+
+(defvar exwm-workspace--original-handle-focus-in
+  (symbol-function #'handle-focus-in))
+(defvar exwm-workspace--original-handle-focus-out
+  (symbol-function #'handle-focus-out))
+
+(defvar exwm-workspace--prompt-add-allowed nil
+  "Non-nil to allow adding workspace from the prompt.")
+
+(defvar exwm-workspace--prompt-delete-allowed nil
+  "Non-nil to allow deleting workspace from the prompt.")
+
+(defvar exwm-workspace--struts nil "Areas occupied by struts.")
+
+(defvar exwm-workspace--switch-history nil
+  "History for `read-from-minibuffer' to interactively switch workspace.")
+
+(defvar exwm-workspace--switch-history-outdated nil
+  "Non-nil to indicate `exwm-workspace--switch-history' is outdated.")
+
+(defvar exwm-workspace--timer nil "Timer used to track echo area changes.")
+
+(defvar exwm-workspace--update-workareas-hook nil
+  "Normal hook run when workareas get updated.")
+
+(defvar exwm-workspace--workareas nil "Workareas (struts excluded).")
+
+(defvar exwm-workspace--frame-y-offset 0
+  "Offset between Emacs inner & outer frame in Y.")
+(defvar exwm-workspace--window-y-offset 0
+  "Offset between Emacs first window & outer frame in Y.")
+
+(defvar exwm-input--during-command)
+(defvar exwm-input--event-hook)
+(defvar exwm-layout-show-all-buffers)
+(defvar exwm-manage--desktop)
+(declare-function exwm-input--on-buffer-list-update "exwm-input.el" ())
+(declare-function exwm-layout--fullscreen-p "exwm-layout.el" ())
+(declare-function exwm-layout--hide "exwm-layout.el" (id))
+(declare-function exwm-layout--other-buffer-predicate "exwm-layout.el"
+                  (buffer))
+(declare-function exwm-layout--refresh "exwm-layout.el")
+(declare-function exwm-layout--show "exwm-layout.el" (id &optional window))
+
+(defsubst exwm-workspace--position (frame)
+  "Retrieve index of given FRAME in workspace list.
+
+NIL if FRAME is not a workspace"
+  (cl-position frame exwm-workspace--list))
+
+(defsubst exwm-workspace--count ()
+  "Retrieve total number of workspaces."
+  (length exwm-workspace--list))
+
+(defsubst exwm-workspace--workspace-p (frame)
+  "Return t if FRAME is a workspace."
+  (memq frame exwm-workspace--list))
+
+(defsubst exwm-workspace--client-p (&optional frame)
+  "Return non-nil if FRAME is an emacsclient frame."
+  (or (frame-parameter frame 'client)
+      (not (display-graphic-p frame))))
+
+(defvar exwm-workspace--switch-map nil
+  "Keymap used for interactively selecting workspace.")
+
+(defun exwm-workspace--init-switch-map ()
+  (let ((map (make-sparse-keymap)))
+    (define-key map [t] (lambda () (interactive)))
+    (define-key map "+" #'exwm-workspace--prompt-add)
+    (define-key map "-" #'exwm-workspace--prompt-delete)
+    (dotimes (i 10)
+      (define-key map (int-to-string i)
+        #'exwm-workspace--switch-map-nth-prefix))
+    (unless (eq exwm-workspace-index-map #'number-to-string)
+      ;; Add extra (and possibly override) keys for selecting workspace.
+      (dotimes (i 10)
+        (let ((key (funcall exwm-workspace-index-map i)))
+          (when (and (stringp key)
+                     (= (length key) 1)
+                     (<= 0 (elt key 0) 127))
+            (define-key map key
+              (lambda ()
+                (interactive)
+                (exwm-workspace--switch-map-select-nth i)))))))
+    (define-key map "\C-a" (lambda () (interactive) (goto-history-element 1)))
+    (define-key map "\C-e" (lambda ()
+                             (interactive)
+                             (goto-history-element (exwm-workspace--count))))
+    (define-key map "\C-g" #'abort-recursive-edit)
+    (define-key map "\C-]" #'abort-recursive-edit)
+    (define-key map "\C-j" #'exit-minibuffer)
+    ;; (define-key map "\C-m" #'exit-minibuffer) ;not working
+    (define-key map [return] #'exit-minibuffer)
+    (define-key map " " #'exit-minibuffer)
+    (define-key map "\C-f" #'previous-history-element)
+    (define-key map "\C-b" #'next-history-element)
+    ;; Alternative keys
+    (define-key map [right] #'previous-history-element)
+    (define-key map [left] #'next-history-element)
+    (setq exwm-workspace--switch-map map)))
+
+(defun exwm-workspace--workspace-from-frame-or-index (frame-or-index)
+  "Retrieve the workspace frame from FRAME-OR-INDEX."
+  (cond
+   ((framep frame-or-index)
+    (unless (exwm-workspace--position frame-or-index)
+      (user-error "[EXWM] Frame is not a workspace %S" frame-or-index))
+    frame-or-index)
+   ((integerp frame-or-index)
+    (unless (and (<= 0 frame-or-index)
+                 (< frame-or-index (exwm-workspace--count)))
+      (user-error "[EXWM] Workspace index out of range: %d" frame-or-index))
+    (elt exwm-workspace--list frame-or-index))
+   (t (user-error "[EXWM] Invalid workspace: %s" frame-or-index))))
+
+(defun exwm-workspace--prompt-for-workspace (&optional prompt)
+  "Prompt for a workspace, returning the workspace frame."
+  (exwm-workspace--update-switch-history)
+  (let* ((current-idx (exwm-workspace--position exwm-workspace--current))
+         (history-add-new-input nil)  ;prevent modifying history
+         (history-idx (read-from-minibuffer
+                       (or prompt "Workspace: ")
+                       (elt exwm-workspace--switch-history current-idx)
+                       exwm-workspace--switch-map nil
+                       `(exwm-workspace--switch-history . ,(1+ current-idx))))
+         (workspace-idx (cl-position history-idx exwm-workspace--switch-history
+                                     :test #'equal)))
+    (elt exwm-workspace--list workspace-idx)))
+
+(defun exwm-workspace--prompt-add ()
+  "Add workspace from the prompt."
+  (interactive)
+  (when exwm-workspace--prompt-add-allowed
+    (let ((exwm-workspace--create-silently t))
+      (make-frame)
+      (run-hooks 'exwm-workspace-list-change-hook))
+    (exwm-workspace--update-switch-history)
+    (goto-history-element minibuffer-history-position)))
+
+(defun exwm-workspace--prompt-delete ()
+  "Delete workspace from the prompt."
+  (interactive)
+  (when (and exwm-workspace--prompt-delete-allowed
+             (< 1 (exwm-workspace--count)))
+    (let ((frame (elt exwm-workspace--list (1- minibuffer-history-position))))
+      (exwm-workspace--get-remove-frame-next-workspace frame)
+      (if (eq frame exwm-workspace--current)
+          ;; Abort the recursive minibuffer if deleting the current workspace.
+          (progn
+            (exwm--defer 0 #'delete-frame frame)
+            (abort-recursive-edit))
+        (delete-frame frame)
+        (exwm-workspace--update-switch-history)
+        (goto-history-element (min minibuffer-history-position
+                                   (exwm-workspace--count)))))))
+
+(defun exwm-workspace--update-switch-history ()
+  "Update the history for switching workspace to reflect the latest status."
+  (when exwm-workspace--switch-history-outdated
+    (setq exwm-workspace--switch-history-outdated nil)
+    (let* ((num (exwm-workspace--count))
+           (sequence (number-sequence 0 (1- num)))
+           (not-empty (make-vector num nil)))
+      (dolist (i exwm--id-buffer-alist)
+        (with-current-buffer (cdr i)
+          (when exwm--frame
+            (setf (aref not-empty
+                        (exwm-workspace--position exwm--frame))
+                  t))))
+      (setq exwm-workspace--switch-history
+            (mapcar
+             (lambda (i)
+               (mapconcat
+                (lambda (j)
+                  (format (if (= i j) "[%s]" " %s ")
+                          (propertize
+                           (apply exwm-workspace-index-map (list j))
+                           'face
+                           (cond ((frame-parameter (elt exwm-workspace--list j)
+                                                   'exwm-urgency)
+                                  '(:foreground "orange"))
+                                 ((aref not-empty j) '(:foreground "green"))
+                                 (t nil)))))
+                sequence ""))
+             sequence)))))
+
+;;;###autoload
+(defun exwm-workspace--get-geometry (frame)
+  "Return the geometry of frame FRAME."
+  (or (frame-parameter frame 'exwm-geometry)
+      (make-instance 'xcb:RECTANGLE
+                     :x 0
+                     :y 0
+                     :width (x-display-pixel-width)
+                     :height (x-display-pixel-height))))
+
+;;;###autoload
+(defun exwm-workspace--current-height ()
+  "Return the height of current workspace."
+  (let ((geometry (frame-parameter exwm-workspace--current 'exwm-geometry)))
+    (if geometry
+        (slot-value geometry 'height)
+      (x-display-pixel-height))))
+
+;;;###autoload
+(defun exwm-workspace--minibuffer-own-frame-p ()
+  "Reports whether the minibuffer is displayed in its own frame."
+  (memq exwm-workspace-minibuffer-position '(top bottom)))
+
+(defun exwm-workspace--update-struts ()
+  "Update `exwm-workspace--struts'."
+  (setq exwm-workspace--struts nil)
+  (let (struts struts*)
+    (dolist (pair exwm-workspace--id-struts-alist)
+      (setq struts (cdr pair))
+      (when struts
+        (dotimes (i 4)
+          (when (/= 0 (aref struts i))
+            (setq struts*
+                  (vector (aref [left right top bottom] i)
+                          (aref struts i)
+                          (when (= 12 (length struts))
+                            (substring struts (+ 4 (* i 2)) (+ 6 (* i 2))))))
+            (if (= 0 (mod i 2))
+                ;; Make left/top processed first.
+                (push struts* exwm-workspace--struts)
+              (setq exwm-workspace--struts
+                    (append exwm-workspace--struts (list struts*))))))))
+    (exwm--log "%s" exwm-workspace--struts)))
+
+(defun exwm-workspace--update-workareas ()
+  "Update `exwm-workspace--workareas'."
+  (let ((root-width (x-display-pixel-width))
+        (root-height (x-display-pixel-height))
+        workareas
+        edge width position
+        delta)
+    ;; Calculate workareas with no struts.
+    (if (frame-parameter (car exwm-workspace--list) 'exwm-geometry)
+        ;; Use the 'exwm-geometry' frame parameter if possible.
+        (dolist (f exwm-workspace--list)
+          (with-slots (x y width height) (frame-parameter f 'exwm-geometry)
+            (setq workareas (append workareas
+                                    (list (vector x y width height))))))
+      ;; Fall back to use the screen size.
+      (let ((workarea (vector 0 0 root-width root-height)))
+        (setq workareas (make-list (exwm-workspace--count) workarea))))
+    ;; Exclude areas occupied by struts.
+    (dolist (struts exwm-workspace--struts)
+      (setq edge (aref struts 0)
+            width (aref struts 1)
+            position (aref struts 2))
+      (dolist (w workareas)
+        (pcase edge
+          ;; Left and top are always processed first.
+          (`left
+           (setq delta (- (aref w 0) width))
+           (when (and (< delta 0)
+                      (or (not position)
+                          (< (max (aref position 0) (aref w 1))
+                             (min (aref position 1)
+                                  (+ (aref w 1) (aref w 3))))))
+             (cl-incf (aref w 2) delta)
+             (setf (aref w 0) width)))
+          (`right
+           (setq delta (- root-width (aref w 0) (aref w 2) width))
+           (when (and (< delta 0)
+                      (or (not position)
+                          (< (max (aref position 0) (aref w 1))
+                             (min (aref position 1)
+                                  (+ (aref w 1) (aref w 3))))))
+             (cl-incf (aref w 2) delta)))
+          (`top
+           (setq delta (- (aref w 1) width))
+           (when (and (< delta 0)
+                      (or (not position)
+                          (< (max (aref position 0) (aref w 0))
+                             (min (aref position 1)
+                                  (+ (aref w 0) (aref w 2))))))
+             (cl-incf (aref w 3) delta)
+             (setf (aref w 1) width)))
+          (`bottom
+           (setq delta (- root-height (aref w 1) (aref w 3) width))
+           (when (and (< delta 0)
+                      (or (not position)
+                          (< (max (aref position 0) (aref w 0))
+                             (min (aref position 1)
+                                  (+ (aref w 0) (aref w 2))))))
+             (cl-incf (aref w 3) delta))))))
+    ;; Save the result.
+    (setq exwm-workspace--workareas workareas)
+    (xcb:flush exwm--connection))
+  (exwm--log "%s" exwm-workspace--workareas)
+  (run-hooks 'exwm-workspace--update-workareas-hook))
+
+(defun exwm-workspace--update-offsets ()
+  "Update `exwm-workspace--frame-y-offset'/`exwm-workspace--window-y-offset'."
+  (exwm--log)
+  (if (not (and exwm-workspace--list
+                (or menu-bar-mode tool-bar-mode)))
+      (setq exwm-workspace--frame-y-offset 0
+            exwm-workspace--window-y-offset 0)
+    (redisplay t)
+    (let* ((frame (elt exwm-workspace--list 0))
+           (edges (window-inside-absolute-pixel-edges (frame-first-window
+                                                       frame))))
+      (with-slots (y)
+          (xcb:+request-unchecked+reply exwm--connection
+              (make-instance 'xcb:GetGeometry
+                             :drawable (frame-parameter frame
+                                                        'exwm-container)))
+        (with-slots ((y* y))
+            (xcb:+request-unchecked+reply exwm--connection
+                (make-instance 'xcb:GetGeometry
+                               :drawable (frame-parameter frame
+                                                          'exwm-outer-id)))
+          (with-slots ((y** y))
+              (xcb:+request-unchecked+reply exwm--connection
+                  (make-instance 'xcb:GetGeometry
+                                 :drawable (frame-parameter frame 'exwm-id)))
+            (setq exwm-workspace--frame-y-offset (- y** y*)
+                  exwm-workspace--window-y-offset (- (elt edges 1) y))))))))
+
+(defun exwm-workspace--set-active (frame active)
+  "Make frame FRAME active on its monitor."
+  (exwm--log "active=%s; frame=%s" frame active)
+  (set-frame-parameter frame 'exwm-active active)
+  (if active
+      (exwm-workspace--set-fullscreen frame)
+    (exwm--set-geometry (frame-parameter frame 'exwm-container) nil nil 1 1))
+  (exwm-layout--refresh frame)
+  (xcb:flush exwm--connection))
+
+(defun exwm-workspace--active-p (frame)
+  "Return non-nil if FRAME is active"
+  (frame-parameter frame 'exwm-active))
+
+(defun exwm-workspace--set-fullscreen (frame)
+  "Make frame FRAME fullscreen according to `exwm-workspace--workareas'."
+  (exwm--log "frame=%s" frame)
+  (let ((workarea (elt exwm-workspace--workareas
+                       (exwm-workspace--position frame)))
+        (id (frame-parameter frame 'exwm-outer-id))
+        (container (frame-parameter frame 'exwm-container))
+        x y width height)
+    (setq x (aref workarea 0)
+          y (aref workarea 1)
+          width (aref workarea 2)
+          height (aref workarea 3))
+    (exwm--log "x=%s; y=%s; w=%s; h=%s" x y width height)
+    (when (and (eq frame exwm-workspace--current)
+               (exwm-workspace--minibuffer-own-frame-p))
+      (exwm-workspace--resize-minibuffer-frame))
+    (if (exwm-workspace--active-p frame)
+        (exwm--set-geometry container x y width height)
+      (exwm--set-geometry container x y 1 1))
+    (exwm--set-geometry id nil nil width height)
+    (xcb:flush exwm--connection))
+  ;; This is only used for workspace initialization.
+  (when exwm-workspace--fullscreen-frame-count
+    (cl-incf exwm-workspace--fullscreen-frame-count)))
+
+(defun exwm-workspace--resize-minibuffer-frame ()
+  "Resize minibuffer (and its container) to fit the size of workspace."
+  (cl-assert (exwm-workspace--minibuffer-own-frame-p))
+  (let ((workarea (elt exwm-workspace--workareas exwm-workspace-current-index))
+        (container (frame-parameter exwm-workspace--minibuffer
+                                    'exwm-container))
+        y width)
+    (setq y (if (eq exwm-workspace-minibuffer-position 'top)
+                (- (aref workarea 1)
+                   exwm-workspace--attached-minibuffer-height)
+              ;; Reset the frame size.
+              (set-frame-height exwm-workspace--minibuffer 1)
+              (redisplay)               ;FIXME.
+              (+ (aref workarea 1) (aref workarea 3)
+                 (- (frame-pixel-height exwm-workspace--minibuffer))
+                 exwm-workspace--attached-minibuffer-height))
+          width (aref workarea 2))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ConfigureWindow
+                       :window container
+                       :value-mask (logior xcb:ConfigWindow:X
+                                           xcb:ConfigWindow:Y
+                                           xcb:ConfigWindow:Width
+                                           (if exwm-manage--desktop
+                                               xcb:ConfigWindow:Sibling
+                                             0)
+                                           xcb:ConfigWindow:StackMode)
+                       :x (aref workarea 0)
+                       :y y
+                       :width width
+                       :sibling exwm-manage--desktop
+                       :stack-mode (if exwm-manage--desktop
+                                       xcb:StackMode:Above
+                                     xcb:StackMode:Below)))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ConfigureWindow
+                       :window (frame-parameter exwm-workspace--minibuffer
+                                                'exwm-outer-id)
+                       :value-mask xcb:ConfigWindow:Width
+                       :width width))
+    (exwm--log "y: %s, width: %s" y width)))
+
+(defun exwm-workspace--switch-map-nth-prefix (&optional prefix-digits)
+  "Allow selecting a workspace by number.
+
+PREFIX-DIGITS is a list of the digits introduced so far."
+  (interactive)
+  (let* ((k (aref (substring (this-command-keys-vector) -1) 0))
+         (d (- k ?0))
+         ;; Convert prefix-digits to number.  For example, '(2 1) to 120.
+         (o 1)
+         (pn (apply #'+ (mapcar (lambda (x)
+                                  (setq o (* 10 o))
+                                  (* o x))
+                                prefix-digits)))
+         (n (+ pn d))
+         prefix-length index-max index-length)
+    (if (or (= n 0)
+            (> n
+               (setq index-max (1- (exwm-workspace--count))))
+            (>= (setq prefix-length (length prefix-digits))
+                (setq index-length (floor (log index-max 10))))
+            ;; Check if it's still possible to do a match.
+            (> (* n (expt 10 (- index-length prefix-length)))
+               index-max))
+        (exwm-workspace--switch-map-select-nth n)
+      ;; Go ahead if there are enough digits to select any workspace.
+      (set-transient-map
+       (let ((map (make-sparse-keymap))
+             (cmd (let ((digits (cons d prefix-digits)))
+                    (lambda ()
+                     (interactive)
+                     (exwm-workspace--switch-map-nth-prefix digits)))))
+         (dotimes (i 10)
+           (define-key map (int-to-string i) cmd))
+         ;; Accept
+         (define-key map [return]
+           (lambda ()
+             (interactive)
+             (exwm-workspace--switch-map-select-nth n)))
+         map)))))
+
+(defun exwm-workspace--switch-map-select-nth (n)
+  "Select Nth workspace."
+  (interactive)
+  (goto-history-element (1+ n))
+  (exit-minibuffer))
+
+;;;###autoload
+(defun exwm-workspace-switch (frame-or-index &optional force)
+  "Switch to workspace INDEX (0-based).
+
+Query for the index if not specified when called interactively.  Passing a
+workspace frame as the first option or making use of the rest options are
+for internal use only."
+  (interactive
+   (list
+    (cond
+     ((null current-prefix-arg)
+      (unless (and (derived-mode-p 'exwm-mode)
+                   ;; The prompt is invisible in fullscreen mode.
+                   (exwm-layout--fullscreen-p))
+        (let ((exwm-workspace--prompt-add-allowed t)
+              (exwm-workspace--prompt-delete-allowed t))
+          (exwm-workspace--prompt-for-workspace "Switch to [+/-]: "))))
+     ((and (integerp current-prefix-arg)
+           (<= 0 current-prefix-arg (exwm-workspace--count)))
+      current-prefix-arg)
+     (t 0))))
+  (exwm--log)
+  (let* ((frame (exwm-workspace--workspace-from-frame-or-index frame-or-index))
+         (old-frame exwm-workspace--current)
+         (index (exwm-workspace--position frame))
+         (window (frame-parameter frame 'exwm-selected-window)))
+    (when (or force (not (eq frame exwm-workspace--current)))
+      (unless (window-live-p window)
+        (setq window (frame-selected-window frame)))
+    (when (and (not (eq frame old-frame))
+               (frame-live-p old-frame))
+      (with-selected-frame old-frame
+        (funcall exwm-workspace--original-handle-focus-out
+                 (list 'focus-out frame))))
+      ;; Raise this frame.
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:ConfigureWindow
+                         :window (frame-parameter frame 'exwm-container)
+                         :value-mask (logior xcb:ConfigWindow:Sibling
+                                             xcb:ConfigWindow:StackMode)
+                         :sibling exwm--guide-window
+                         :stack-mode xcb:StackMode:Below))
+      (setq exwm-workspace--current frame
+            exwm-workspace-current-index index)
+      (unless (exwm-workspace--workspace-p (selected-frame))
+        ;; Save the floating frame window selected on the previous workspace.
+        (set-frame-parameter (buffer-local-value 'exwm--frame (window-buffer))
+                             'exwm-selected-window (selected-window)))
+      ;; Show/Hide X windows.
+      (let ((monitor-old (frame-parameter old-frame 'exwm-randr-monitor))
+            (monitor-new (frame-parameter frame 'exwm-randr-monitor))
+            (active-old (exwm-workspace--active-p old-frame))
+            (active-new (exwm-workspace--active-p frame))
+            workspaces-to-hide)
+        (cond
+         ((not active-old)
+          (exwm-workspace--set-active frame t))
+         ((equal monitor-old monitor-new)
+          (exwm-workspace--set-active frame t)
+          (unless (eq frame old-frame)
+            (exwm-workspace--set-active old-frame nil)
+            (setq workspaces-to-hide (list old-frame))))
+         (active-new)
+         (t
+          (dolist (w exwm-workspace--list)
+            (when (and (exwm-workspace--active-p w)
+                       (equal monitor-new
+                              (frame-parameter w 'exwm-randr-monitor)))
+              (exwm-workspace--set-active w nil)
+              (setq workspaces-to-hide (append workspaces-to-hide (list w)))))
+          (exwm-workspace--set-active frame t)))
+        (dolist (i exwm--id-buffer-alist)
+          (with-current-buffer (cdr i)
+            (if (memq exwm--frame workspaces-to-hide)
+                (exwm-layout--hide exwm--id)
+              (when (eq frame exwm--frame)
+                (let ((window (get-buffer-window nil t)))
+                  (when window
+                    (exwm-layout--show exwm--id window))))))))
+      (select-window window)
+      (x-focus-frame (window-frame window)) ;The real input focus.
+      (set-frame-parameter frame 'exwm-selected-window nil)
+      (if (exwm-workspace--minibuffer-own-frame-p)
+          ;; Resize the minibuffer frame.
+          (exwm-workspace--resize-minibuffer-frame)
+        ;; Set a default minibuffer frame.
+        (setq default-minibuffer-frame frame))
+      ;; Hide windows in other workspaces by preprending a space
+      (unless exwm-workspace-show-all-buffers
+        (dolist (i exwm--id-buffer-alist)
+          (with-current-buffer (cdr i)
+            (let ((name (replace-regexp-in-string "^\\s-*" ""
+                                                  (buffer-name))))
+              (exwm-workspace-rename-buffer (if (eq frame exwm--frame)
+                                                name
+                                              (concat " " name)))))))
+      ;; Update demands attention flag
+      (set-frame-parameter frame 'exwm-urgency nil)
+      ;; Update switch workspace history
+      (setq exwm-workspace--switch-history-outdated t)
+      ;; Set _NET_CURRENT_DESKTOP
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:ewmh:set-_NET_CURRENT_DESKTOP
+                         :window exwm--root :data index))
+      (xcb:flush exwm--connection))
+    (when exwm-workspace-warp-cursor
+      (with-slots (win-x win-y)
+          (xcb:+request-unchecked+reply exwm--connection
+              (make-instance 'xcb:QueryPointer
+                             :window (frame-parameter frame
+                                                      'exwm-outer-id)))
+        (when (or (< win-x 0)
+                  (< win-y 0)
+                  (> win-x (frame-pixel-width frame))
+                  (> win-y (frame-pixel-height frame)))
+          (xcb:+request exwm--connection
+              (make-instance 'xcb:WarpPointer
+                             :src-window xcb:Window:None
+                             :dst-window (frame-parameter frame
+                                                          'exwm-outer-id)
+                             :src-x 0
+                             :src-y 0
+                             :src-width 0
+                             :src-height 0
+                             :dst-x (/ (frame-pixel-width frame) 2)
+                             :dst-y (/ (frame-pixel-height frame) 2)))
+          (xcb:flush exwm--connection))))
+    (funcall exwm-workspace--original-handle-focus-in (list 'focus-in frame))
+    (run-hooks 'exwm-workspace-switch-hook)))
+
+;;;###autoload
+(defun exwm-workspace-switch-create (frame-or-index)
+  "Switch to workspace INDEX or creating it first if it does not exist yet.
+
+Passing a workspace frame as the first option is for internal use only."
+  (interactive
+   (list
+    (cond
+     ((integerp current-prefix-arg)
+      current-prefix-arg)
+     (t 0))))
+  (unless frame-or-index
+    (setq frame-or-index 0))
+  (exwm--log "%s" frame-or-index)
+  (if (or (framep frame-or-index)
+          (< frame-or-index (exwm-workspace--count)))
+      (exwm-workspace-switch frame-or-index)
+    (let ((exwm-workspace--create-silently t))
+      (dotimes (_ (min exwm-workspace-switch-create-limit
+                       (1+ (- frame-or-index
+                              (exwm-workspace--count)))))
+        (make-frame))
+      (run-hooks 'exwm-workspace-list-change-hook))
+    (exwm-workspace-switch frame-or-index)))
+
+;;;###autoload
+(defun exwm-workspace-swap (workspace1 workspace2)
+  "Interchange position of WORKSPACE1 with that of WORKSPACE2."
+  (interactive
+   (unless (and (derived-mode-p 'exwm-mode)
+                ;; The prompt is invisible in fullscreen mode.
+                (exwm-layout--fullscreen-p))
+     (let (w1 w2)
+       (let ((exwm-workspace--prompt-add-allowed t)
+             (exwm-workspace--prompt-delete-allowed t))
+         (setq w1 (exwm-workspace--prompt-for-workspace
+                   "Pick a workspace [+/-]: ")))
+       (setq w2 (exwm-workspace--prompt-for-workspace
+                 (format "Swap workspace %d with: "
+                         (exwm-workspace--position w1))))
+       (list w1 w2))))
+  (exwm--log)
+  (let ((pos1 (exwm-workspace--position workspace1))
+        (pos2 (exwm-workspace--position workspace2)))
+    (if (or (not pos1) (not pos2) (= pos1 pos2))
+        (user-error "[EXWM] Cannot swap %s and %s" workspace1 workspace2)
+      (setf (elt exwm-workspace--list pos1) workspace2)
+      (setf (elt exwm-workspace--list pos2) workspace1)
+      ;; Update the _NET_WM_DESKTOP property of each X window affected.
+      (dolist (pair exwm--id-buffer-alist)
+        (when (memq (buffer-local-value 'exwm--frame (cdr pair))
+                    (list workspace1 workspace2))
+          (exwm-workspace--set-desktop (car pair))))
+      (xcb:flush exwm--connection)
+      (when (memq exwm-workspace--current (list workspace1 workspace2))
+        ;; With the current workspace involved, lots of stuffs need refresh.
+        (set-frame-parameter exwm-workspace--current 'exwm-selected-window
+                             (selected-window))
+        (exwm-workspace-switch exwm-workspace--current t))
+      (run-hooks 'exwm-workspace-list-change-hook))))
+
+;;;###autoload
+(defun exwm-workspace-move (workspace nth)
+  "Move WORKSPACE to the NTH position.
+
+When called interactively, prompt for a workspace and move current one just
+before it."
+  (interactive
+   (cond
+    ((null current-prefix-arg)
+     (unless (and (derived-mode-p 'exwm-mode)
+                  ;; The prompt is invisible in fullscreen mode.
+                  (exwm-layout--fullscreen-p))
+       (list exwm-workspace--current
+             (exwm-workspace--position
+              (exwm-workspace--prompt-for-workspace "Move workspace to: ")))))
+    ((and (integerp current-prefix-arg)
+          (<= 0 current-prefix-arg (exwm-workspace--count)))
+     (list exwm-workspace--current current-prefix-arg))
+    (t (list exwm-workspace--current 0))))
+  (exwm--log)
+  (let ((pos (exwm-workspace--position workspace))
+        flag start end index)
+    (if (= nth pos)
+        (user-error "[EXWM] Cannot move to same position")
+      ;; Set if the current workspace is involved.
+      (setq flag (or (eq workspace exwm-workspace--current)
+                     (eq (elt exwm-workspace--list nth)
+                         exwm-workspace--current)))
+      ;; Do the move.
+      (with-no-warnings                 ;For Emacs 24.
+        (pop (nthcdr pos exwm-workspace--list)))
+      (push workspace (nthcdr nth exwm-workspace--list))
+      ;; Update the _NET_WM_DESKTOP property of each X window affected.
+      (setq start (min pos nth)
+            end (max pos nth))
+      (dolist (pair exwm--id-buffer-alist)
+        (setq index (exwm-workspace--position
+                     (buffer-local-value 'exwm--frame (cdr pair))))
+        (unless (or (< index start) (> index end))
+          (exwm-workspace--set-desktop (car pair))))
+      (when flag
+        ;; With the current workspace involved, lots of stuffs need refresh.
+        (set-frame-parameter exwm-workspace--current 'exwm-selected-window
+                             (selected-window))
+        (exwm-workspace-switch exwm-workspace--current t))
+      (run-hooks 'exwm-workspace-list-change-hook))))
+
+;;;###autoload
+(defun exwm-workspace-add (&optional index)
+  "Add a workspace as the INDEX-th workspace, or the last one if INDEX is nil.
+
+INDEX must not exceed the current number of workspaces."
+  (interactive)
+  (exwm--log "%s" index)
+  (if (and index
+           ;; No need to move if it's the last one.
+           (< index (exwm-workspace--count)))
+      (exwm-workspace-move (make-frame) index)
+    (make-frame)))
+
+;;;###autoload
+(defun exwm-workspace-delete (&optional frame-or-index)
+  "Delete the workspace FRAME-OR-INDEX."
+  (interactive)
+  (exwm--log "%s" frame-or-index)
+  (when (< 1 (exwm-workspace--count))
+    (let ((frame (if frame-or-index
+                     (exwm-workspace--workspace-from-frame-or-index
+                      frame-or-index)
+                   exwm-workspace--current)))
+      (exwm-workspace--get-remove-frame-next-workspace frame)
+      (delete-frame frame))))
+
+(defun exwm-workspace--set-desktop (id)
+  "Set _NET_WM_DESKTOP for X window ID."
+  (exwm--log "#x%x" id)
+  (with-current-buffer (exwm--id->buffer id)
+    (let ((desktop (exwm-workspace--position exwm--frame)))
+      (setq exwm--desktop desktop)
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:ewmh:set-_NET_WM_DESKTOP
+                         :window id
+                         :data desktop)))))
+
+;;;###autoload
+(cl-defun exwm-workspace-move-window (frame-or-index &optional id)
+  "Move window ID to workspace FRAME-OR-INDEX."
+  (interactive (list
+                (cond
+                 ((null current-prefix-arg)
+                  (let ((exwm-workspace--prompt-add-allowed t)
+                        (exwm-workspace--prompt-delete-allowed t))
+                    (exwm-workspace--prompt-for-workspace "Move to [+/-]: ")))
+                 ((and (integerp current-prefix-arg)
+                       (<= 0 current-prefix-arg (exwm-workspace--count)))
+                  current-prefix-arg)
+                 (t 0))))
+  (let ((frame (exwm-workspace--workspace-from-frame-or-index frame-or-index))
+        old-frame container)
+    (unless id (setq id (exwm--buffer->id (window-buffer))))
+    (unless id
+      (cl-return-from exwm-workspace-move-window))
+    (exwm--log "Moving #x%x to %s" id frame-or-index)
+    (with-current-buffer (exwm--id->buffer id)
+      (unless (eq exwm--frame frame)
+        (unless exwm-workspace-show-all-buffers
+          (let ((name (replace-regexp-in-string "^\\s-*" "" (buffer-name))))
+            (exwm-workspace-rename-buffer
+             (if (eq frame exwm-workspace--current)
+                 name
+               (concat " " name)))))
+        (setq old-frame exwm--frame
+              exwm--frame frame)
+        (if (not exwm--floating-frame)
+            ;; Tiling.
+            (if (get-buffer-window nil frame)
+                (when (eq frame exwm-workspace--current)
+                  (exwm-layout--refresh frame))
+              (set-window-buffer (get-buffer-window nil t)
+                                 (other-buffer nil t))
+              (unless (eq frame exwm-workspace--current)
+                ;; Clear the 'exwm-selected-window' frame parameter.
+                (set-frame-parameter frame 'exwm-selected-window nil))
+              (set-window-buffer (frame-selected-window frame)
+                                 (exwm--id->buffer id))
+              (if (eq frame exwm-workspace--current)
+                  (select-window (frame-selected-window frame))
+                (unless (exwm-workspace--active-p frame)
+                  (exwm-layout--hide id))))
+          ;; Floating.
+          (setq container (frame-parameter exwm--floating-frame
+                                           'exwm-container))
+          (unless (equal (frame-parameter old-frame 'exwm-randr-monitor)
+                         (frame-parameter frame 'exwm-randr-monitor))
+            (with-slots (x y)
+                (xcb:+request-unchecked+reply exwm--connection
+                    (make-instance 'xcb:GetGeometry
+                                   :drawable container))
+              (with-slots ((x1 x)
+                           (y1 y))
+                  (exwm-workspace--get-geometry old-frame)
+                (with-slots ((x2 x)
+                             (y2 y))
+                    (exwm-workspace--get-geometry frame)
+                  (setq x (+ x (- x2 x1))
+                        y (+ y (- y2 y1)))))
+              (exwm--set-geometry id x y nil nil)
+              (exwm--set-geometry container x y nil nil)))
+          (if (exwm-workspace--minibuffer-own-frame-p)
+              (if (eq frame exwm-workspace--current)
+                  (select-window (frame-root-window exwm--floating-frame))
+                (select-window (frame-selected-window exwm-workspace--current))
+                (unless (exwm-workspace--active-p frame)
+                  (exwm-layout--hide id)))
+            ;; The frame needs to be recreated since it won't use the
+            ;; minibuffer on the new workspace.
+            ;; The code is mostly copied from `exwm-floating--set-floating'.
+            (let* ((old-frame exwm--floating-frame)
+                   (new-frame
+                    (with-current-buffer
+                        (or (get-buffer "*scratch*")
+                            (progn
+                              (set-buffer-major-mode
+                               (get-buffer-create "*scratch*"))
+                              (get-buffer "*scratch*")))
+                      (make-frame
+                       `((minibuffer . ,(minibuffer-window frame))
+                         (left . ,(* window-min-width -100))
+                         (top . ,(* window-min-height -100))
+                         (width . ,window-min-width)
+                         (height . ,window-min-height)
+                         (unsplittable . t)))))
+                   (outer-id (string-to-number
+                              (frame-parameter new-frame
+                                               'outer-window-id)))
+                   (window-id (string-to-number
+                               (frame-parameter new-frame 'window-id)))
+                   (window (frame-root-window new-frame)))
+              (set-frame-parameter new-frame 'exwm-outer-id outer-id)
+              (set-frame-parameter new-frame 'exwm-id window-id)
+              (set-frame-parameter new-frame 'exwm-container container)
+              (make-frame-invisible new-frame)
+              (set-frame-size new-frame
+                              (frame-pixel-width old-frame)
+                              (frame-pixel-height old-frame)
+                              t)
+              (xcb:+request exwm--connection
+                  (make-instance 'xcb:ReparentWindow
+                                 :window outer-id
+                                 :parent container
+                                 :x 0 :y 0))
+              (xcb:flush exwm--connection)
+              (with-current-buffer (exwm--id->buffer id)
+                (setq window-size-fixed nil
+                      exwm--floating-frame new-frame)
+                (set-window-dedicated-p (frame-root-window old-frame) nil)
+                (remove-hook 'window-configuration-change-hook
+                             #'exwm-layout--refresh)
+                (set-window-buffer window (current-buffer))
+                (add-hook 'window-configuration-change-hook
+                          #'exwm-layout--refresh)
+                (set-window-dedicated-p window t))
+              ;; Select a tiling window and delete the old frame.
+              (select-window (frame-selected-window exwm-workspace--current))
+              (delete-frame old-frame)
+              ;; The rest is the same.
+              (make-frame-visible new-frame)
+              (exwm--set-geometry outer-id 0 0 nil nil)
+              (xcb:flush exwm--connection)
+              (redisplay)
+              (if (eq frame exwm-workspace--current)
+                  (with-current-buffer (exwm--id->buffer id)
+                    (select-window (frame-root-window exwm--floating-frame)))
+                (unless (exwm-workspace--active-p frame)
+                  (exwm-layout--hide id)))))
+          ;; Update the 'exwm-selected-window' frame parameter.
+          (when (not (eq frame exwm-workspace--current))
+            (with-current-buffer (exwm--id->buffer id)
+              (set-frame-parameter frame 'exwm-selected-window
+                                   (frame-root-window
+                                    exwm--floating-frame)))))
+        ;; Set _NET_WM_DESKTOP.
+        (exwm-workspace--set-desktop id)
+        (xcb:flush exwm--connection)))
+    (setq exwm-workspace--switch-history-outdated t)))
+
+;;;###autoload
+(defun exwm-workspace-switch-to-buffer (buffer-or-name)
+  "Make the current Emacs window display another buffer."
+  (interactive
+   (let ((inhibit-quit t))
+     ;; Show all buffers
+     (unless exwm-workspace-show-all-buffers
+       (dolist (pair exwm--id-buffer-alist)
+         (with-current-buffer (cdr pair)
+           (when (= ?\s (aref (buffer-name) 0))
+             (let ((buffer-list-update-hook
+                    (remq #'exwm-input--on-buffer-list-update
+                          buffer-list-update-hook)))
+               (rename-buffer (substring (buffer-name) 1)))))))
+     (prog1
+         (with-local-quit
+           (list (get-buffer (read-buffer-to-switch "Switch to buffer: "))))
+       ;; Hide buffers on other workspaces
+       (unless exwm-workspace-show-all-buffers
+         (dolist (pair exwm--id-buffer-alist)
+           (with-current-buffer (cdr pair)
+             (unless (or (eq exwm--frame exwm-workspace--current)
+                         (= ?\s (aref (buffer-name) 0)))
+               (let ((buffer-list-update-hook
+                      (remq #'exwm-input--on-buffer-list-update
+                            buffer-list-update-hook)))
+                 (rename-buffer (concat " " (buffer-name)))))))))))
+  (exwm--log)
+  (when buffer-or-name
+    (with-current-buffer buffer-or-name
+      (if (derived-mode-p 'exwm-mode)
+          ;; EXWM buffer.
+          (if (eq exwm--frame exwm-workspace--current)
+              ;; On the current workspace.
+              (if (not exwm--floating-frame)
+                  (switch-to-buffer buffer-or-name)
+                ;; Select the floating frame.
+                (select-frame-set-input-focus exwm--floating-frame)
+                (select-window (frame-root-window exwm--floating-frame)))
+            ;; On another workspace.
+            (if exwm-layout-show-all-buffers
+                (exwm-workspace-move-window exwm-workspace--current
+                                            exwm--id)
+              (let ((window (get-buffer-window buffer-or-name exwm--frame)))
+                (if window
+                    (set-frame-parameter exwm--frame
+                                         'exwm-selected-window window)
+                  (set-window-buffer (frame-selected-window exwm--frame)
+                                     buffer-or-name)))
+              (exwm-workspace-switch exwm--frame)))
+        ;; Ordinary buffer.
+        (switch-to-buffer buffer-or-name)))))
+
+(defun exwm-workspace-rename-buffer (newname)
+  "Rename a buffer."
+  (let ((hidden (= ?\s (aref newname 0)))
+        (basename (replace-regexp-in-string "<[0-9]+>$" "" newname))
+        (counter 1)
+        tmp)
+    (when hidden (setq basename (substring basename 1)))
+    (setq newname basename)
+    (while (and (setq tmp (or (get-buffer newname)
+                              (get-buffer (concat " " newname))))
+                (not (eq tmp (current-buffer))))
+      (setq newname (format "%s<%d>" basename (cl-incf counter))))
+    (let ((buffer-list-update-hook
+           (remq #'exwm-input--on-buffer-list-update
+                 buffer-list-update-hook)))
+      (rename-buffer (concat (and hidden " ") newname)))))
+
+(defun exwm-workspace--x-create-frame (orig-fun params)
+  "Set override-redirect on the frame created by `x-create-frame'."
+  (exwm--log)
+  (let ((frame (funcall orig-fun params)))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ChangeWindowAttributes
+                       :window (string-to-number
+                                (frame-parameter frame 'outer-window-id))
+                       :value-mask xcb:CW:OverrideRedirect
+                       :override-redirect 1))
+    (xcb:flush exwm--connection)
+    frame))
+
+(defsubst exwm-workspace--minibuffer-attached-p ()
+  "Return non-nil if the minibuffer is attached.
+
+Please check `exwm-workspace--minibuffer-own-frame-p' first."
+  (assq (frame-parameter exwm-workspace--minibuffer 'exwm-container)
+        exwm-workspace--id-struts-alist))
+
+;;;###autoload
+(defun exwm-workspace-attach-minibuffer ()
+  "Attach the minibuffer so that it always shows."
+  (interactive)
+  (exwm--log)
+  (when (and (exwm-workspace--minibuffer-own-frame-p)
+             (not (exwm-workspace--minibuffer-attached-p)))
+    ;; Reset the frame size.
+    (set-frame-height exwm-workspace--minibuffer 1)
+    (redisplay)                       ;FIXME.
+    (setq exwm-workspace--attached-minibuffer-height
+          (frame-pixel-height exwm-workspace--minibuffer))
+    (exwm-workspace--show-minibuffer)
+    (let ((container (frame-parameter exwm-workspace--minibuffer
+                                      'exwm-container)))
+      (push (cons container
+                  (if (eq exwm-workspace-minibuffer-position 'top)
+                      (vector 0 0 exwm-workspace--attached-minibuffer-height 0)
+                    (vector 0 0 0 exwm-workspace--attached-minibuffer-height)))
+            exwm-workspace--id-struts-alist)
+      (exwm-workspace--update-struts)
+      (exwm-workspace--update-workareas)
+      (dolist (f exwm-workspace--list)
+        (exwm-workspace--set-fullscreen f)))))
+
+;;;###autoload
+(defun exwm-workspace-detach-minibuffer ()
+  "Detach the minibuffer so that it automatically hides."
+  (interactive)
+  (exwm--log)
+  (when (and (exwm-workspace--minibuffer-own-frame-p)
+             (exwm-workspace--minibuffer-attached-p))
+    (setq exwm-workspace--attached-minibuffer-height 0)
+    (let ((container (frame-parameter exwm-workspace--minibuffer
+                                      'exwm-container)))
+      (setq exwm-workspace--id-struts-alist
+            (assq-delete-all container exwm-workspace--id-struts-alist))
+      (exwm-workspace--update-struts)
+      (exwm-workspace--update-workareas)
+      (dolist (f exwm-workspace--list)
+        (exwm-workspace--set-fullscreen f))
+      (exwm-workspace--hide-minibuffer))))
+
+;;;###autoload
+(defun exwm-workspace-toggle-minibuffer ()
+  "Attach the minibuffer if it's detached, or detach it if it's attached."
+  (interactive)
+  (exwm--log)
+  (when (exwm-workspace--minibuffer-own-frame-p)
+    (if (exwm-workspace--minibuffer-attached-p)
+        (exwm-workspace-detach-minibuffer)
+      (exwm-workspace-attach-minibuffer))))
+
+(defun exwm-workspace--update-minibuffer-height (&optional echo-area)
+  "Update the minibuffer frame height."
+  (unless (exwm-workspace--client-p)
+    (let ((height
+           (with-current-buffer
+               (window-buffer (minibuffer-window exwm-workspace--minibuffer))
+             (max 1
+                  (if echo-area
+                      (let ((width (frame-width exwm-workspace--minibuffer))
+                            (result 0))
+                        (mapc (lambda (i)
+                                (setq result
+                                      (+ result
+                                         (ceiling (1+ (length i)) width))))
+                              (split-string (or (current-message) "") "\n"))
+                        result)
+                    (count-screen-lines))))))
+      (when (and (integerp max-mini-window-height)
+                 (> height max-mini-window-height))
+        (setq height max-mini-window-height))
+      (exwm--log "%s" height)
+      (set-frame-height exwm-workspace--minibuffer height))))
+
+(defun exwm-workspace--on-ConfigureNotify (data _synthetic)
+  "Adjust the container to fit the minibuffer frame."
+  (let ((obj (make-instance 'xcb:ConfigureNotify))
+        workarea y)
+    (xcb:unmarshal obj data)
+    (with-slots (window height) obj
+      (when (eq (frame-parameter exwm-workspace--minibuffer 'exwm-outer-id)
+                window)
+        (exwm--log)
+        (when (and (floatp max-mini-window-height)
+                   (> height (* max-mini-window-height
+                                (exwm-workspace--current-height))))
+          (setq height (floor
+                        (* max-mini-window-height
+                           (exwm-workspace--current-height))))
+          (xcb:+request exwm--connection
+              (make-instance 'xcb:ConfigureWindow
+                             :window window
+                             :value-mask xcb:ConfigWindow:Height
+                             :height height)))
+        (when (/= (exwm-workspace--count) (length exwm-workspace--workareas))
+          ;; There is a chance the workareas are not updated timely.
+          (exwm-workspace--update-workareas))
+        (setq workarea (elt exwm-workspace--workareas
+                            exwm-workspace-current-index)
+              y (if (eq exwm-workspace-minibuffer-position 'top)
+                    (- (aref workarea 1)
+                       exwm-workspace--attached-minibuffer-height)
+                  (+ (aref workarea 1) (aref workarea 3) (- height)
+                     exwm-workspace--attached-minibuffer-height)))
+        (xcb:+request exwm--connection
+            (make-instance 'xcb:ConfigureWindow
+                           :window (frame-parameter exwm-workspace--minibuffer
+                                                    'exwm-container)
+                           :value-mask (logior xcb:ConfigWindow:Y
+                                               xcb:ConfigWindow:Height)
+                           :y y
+                           :height height))
+        (xcb:flush exwm--connection)))))
+
+(defun exwm-workspace--display-buffer (buffer alist)
+  "Display BUFFER as if the current workspace is selected."
+  ;; Only when the floating minibuffer frame is selected.
+  ;; This also protect this functions from being recursively called.
+  (when (eq (selected-frame) exwm-workspace--minibuffer)
+    (with-selected-frame exwm-workspace--current
+      (display-buffer buffer alist))))
+
+(defun exwm-workspace--show-minibuffer ()
+  "Show the minibuffer frame."
+  (exwm--log)
+  ;; Cancel pending timer.
+  (when exwm-workspace--display-echo-area-timer
+    (cancel-timer exwm-workspace--display-echo-area-timer)
+    (setq exwm-workspace--display-echo-area-timer nil))
+  ;; Show the minibuffer frame.
+  (unless (exwm-workspace--minibuffer-attached-p)
+    (exwm--set-geometry (frame-parameter exwm-workspace--minibuffer
+                                         'exwm-container)
+                        nil nil
+                        (frame-pixel-width exwm-workspace--minibuffer)
+                        (frame-pixel-height exwm-workspace--minibuffer)))
+  (xcb:+request exwm--connection
+      (make-instance 'xcb:ConfigureWindow
+                     :window (frame-parameter exwm-workspace--minibuffer
+                                              'exwm-container)
+                     :value-mask xcb:ConfigWindow:StackMode
+                     :stack-mode xcb:StackMode:Above))
+  (xcb:flush exwm--connection))
+
+(defun exwm-workspace--hide-minibuffer ()
+  "Hide the minibuffer frame."
+  (exwm--log)
+  ;; Hide the minibuffer frame.
+  (if (exwm-workspace--minibuffer-attached-p)
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:ConfigureWindow
+                         :window (frame-parameter exwm-workspace--minibuffer
+                                                  'exwm-container)
+                         :value-mask (logior (if exwm-manage--desktop
+                                                 xcb:ConfigWindow:Sibling
+                                               0)
+                                             xcb:ConfigWindow:StackMode)
+                         :sibling exwm-manage--desktop
+                         :stack-mode (if exwm-manage--desktop
+                                         xcb:StackMode:Above
+                                       xcb:StackMode:Below)))
+    (exwm--set-geometry (frame-parameter exwm-workspace--minibuffer
+                                         'exwm-container)
+                        nil nil 1 1))
+  (xcb:flush exwm--connection))
+
+(defun exwm-workspace--on-minibuffer-setup ()
+  "Run in minibuffer-setup-hook to show the minibuffer and its container."
+  (exwm--log)
+  (when (and (= 1 (minibuffer-depth))
+             (not (exwm-workspace--client-p)))
+    (add-hook 'post-command-hook #'exwm-workspace--update-minibuffer-height)
+    (exwm-workspace--show-minibuffer))
+  ;; FIXME: This is a temporary fix for the *Completions* buffer not
+  ;;        being correctly fitted by its displaying window.  As with
+  ;;        `exwm-workspace--display-buffer', the problem is caused by
+  ;;        the fact that the minibuffer (rather than the workspace)
+  ;;        frame is the 'selected frame'.  `get-buffer-window' will
+  ;;        fail to retrieve the correct window.  It's likely there are
+  ;;        other related issues.
+  ;; This is not required by Emacs 24.
+  (when (fboundp 'window-preserve-size)
+    (let ((window (get-buffer-window "*Completions*"
+                                     exwm-workspace--current)))
+      (when window
+        (fit-window-to-buffer window)
+        (window-preserve-size window)))))
+
+(defun exwm-workspace--on-minibuffer-exit ()
+  "Run in minibuffer-exit-hook to hide the minibuffer container."
+  (exwm--log)
+  (when (and (= 1 (minibuffer-depth))
+             (not (exwm-workspace--client-p)))
+    (remove-hook 'post-command-hook #'exwm-workspace--update-minibuffer-height)
+    (exwm-workspace--hide-minibuffer)))
+
+(defun exwm-workspace--on-echo-area-dirty ()
+  "Run when new message arrives to show the echo area and its container."
+  (when (and (not (active-minibuffer-window))
+             (not (exwm-workspace--client-p))
+             (or (current-message)
+                 cursor-in-echo-area))
+    (exwm-workspace--update-minibuffer-height t)
+    (exwm-workspace--show-minibuffer)
+    (unless (or (not exwm-workspace-display-echo-area-timeout)
+                exwm-input--during-command ;e.g. read-event
+                input-method-use-echo-area)
+      (setq exwm-workspace--display-echo-area-timer
+            (run-with-timer exwm-workspace-display-echo-area-timeout nil
+                            #'exwm-workspace--echo-area-maybe-clear)))))
+
+(defun exwm-workspace--echo-area-maybe-clear ()
+  "Eventually clear the echo area container."
+  (exwm--log)
+  (if (not (current-message))
+      (exwm-workspace--on-echo-area-clear)
+    ;; Reschedule.
+    (cancel-timer exwm-workspace--display-echo-area-timer)
+    (setq exwm-workspace--display-echo-area-timer
+          (run-with-timer exwm-workspace-display-echo-area-timeout nil
+                          #'exwm-workspace--echo-area-maybe-clear))))
+
+(defun exwm-workspace--on-echo-area-clear ()
+  "Run in echo-area-clear-hook to hide echo area container."
+  (unless (exwm-workspace--client-p)
+    (unless (active-minibuffer-window)
+      (exwm-workspace--hide-minibuffer))
+    (when exwm-workspace--display-echo-area-timer
+      (cancel-timer exwm-workspace--display-echo-area-timer)
+      (setq exwm-workspace--display-echo-area-timer nil))))
+
+(defun exwm-workspace--set-desktop-geometry ()
+  "Set _NET_DESKTOP_GEOMETRY."
+  (exwm--log)
+  ;; We don't support large desktop so it's the same with screen size.
+  (xcb:+request exwm--connection
+      (make-instance 'xcb:ewmh:set-_NET_DESKTOP_GEOMETRY
+                     :window exwm--root
+                     :width (x-display-pixel-width)
+                     :height (x-display-pixel-height))))
+
+(defun exwm-workspace--add-frame-as-workspace (frame)
+  "Configure frame FRAME to be treated as a workspace."
+  (exwm--log "%s" frame)
+  (setq exwm-workspace--list (nconc exwm-workspace--list (list frame)))
+  (let ((outer-id (string-to-number (frame-parameter frame
+                                                     'outer-window-id)))
+        (window-id (string-to-number (frame-parameter frame 'window-id)))
+        (container (xcb:generate-id exwm--connection)))
+    ;; Save window IDs
+    (set-frame-parameter frame 'exwm-outer-id outer-id)
+    (set-frame-parameter frame 'exwm-id window-id)
+    (set-frame-parameter frame 'exwm-container container)
+    ;; In case it's created by emacsclient.
+    (set-frame-parameter frame 'client nil)
+    ;; Copy RandR frame parameters from the first workspace to
+    ;; prevent potential problems.  The values do not matter here as
+    ;; they'll be updated by the RandR module later.
+    (let ((w (car exwm-workspace--list)))
+      (dolist (param '(exwm-randr-monitor
+                       exwm-geometry))
+        (set-frame-parameter frame param (frame-parameter w param))))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:CreateWindow
+                       :depth 0
+                       :wid container
+                       :parent exwm--root
+                       :x -1
+                       :y -1
+                       :width 1
+                       :height 1
+                       :border-width 0
+                       :class xcb:WindowClass:InputOutput
+                       :visual 0
+                       :value-mask (logior xcb:CW:BackPixmap
+                                           xcb:CW:OverrideRedirect)
+                       :background-pixmap xcb:BackPixmap:ParentRelative
+                       :override-redirect 1))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ConfigureWindow
+                       :window container
+                       :value-mask xcb:ConfigWindow:StackMode
+                       :stack-mode xcb:StackMode:Below))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ewmh:set-_NET_WM_NAME
+                       :window container
+                       :data
+                       (format "EXWM workspace %d frame container"
+                               (exwm-workspace--position frame))))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ReparentWindow
+                       :window outer-id :parent container :x 0 :y 0))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:MapWindow :window container)))
+  (xcb:flush exwm--connection)
+  ;; Delay making the workspace fullscreen until Emacs becomes idle
+  (exwm--defer 0 #'set-frame-parameter frame 'fullscreen 'fullboth)
+  ;; Update EWMH properties.
+  (exwm-workspace--update-ewmh-props)
+  (if exwm-workspace--create-silently
+      (setq exwm-workspace--switch-history-outdated t)
+    (let ((original-index exwm-workspace-current-index))
+      (exwm-workspace-switch frame t)
+      (message "Created %s as workspace %d; switched from %d"
+               frame exwm-workspace-current-index original-index))
+    (run-hooks 'exwm-workspace-list-change-hook)))
+
+(defun exwm-workspace--get-remove-frame-next-workspace (frame)
+  "Return the next workspace if workspace FRAME is removed.
+
+All X windows currently on workspace FRAME will be automatically moved to
+the next workspace."
+  (let* ((index (exwm-workspace--position frame))
+         (lastp (= index (1- (exwm-workspace--count))))
+         (nextw (elt exwm-workspace--list (+ index (if lastp -1 +1)))))
+    ;; Clients need to be moved to some other workspace before this being
+    ;; removed.
+    (dolist (pair exwm--id-buffer-alist)
+      (with-current-buffer (cdr pair)
+        (when (eq exwm--frame frame)
+          (exwm-workspace-move-window nextw exwm--id))))
+    nextw))
+
+(defun exwm-workspace--remove-frame-as-workspace (frame)
+  "Stop treating frame FRAME as a workspace."
+  ;; TODO: restore all frame parameters (e.g. exwm-workspace, buffer-predicate,
+  ;; etc)
+  (exwm--log "Removing frame `%s' as workspace" frame)
+  (let* ((index (exwm-workspace--position frame))
+         (nextw (exwm-workspace--get-remove-frame-next-workspace frame)))
+    ;; Need to remove the workspace from the list in order for
+    ;; the correct calculation of indexes.
+    (setq exwm-workspace--list (delete frame exwm-workspace--list))
+    ;; Update the _NET_WM_DESKTOP property of each X window affected.
+    (dolist (pair exwm--id-buffer-alist)
+      (when (<= (1- index)
+                (exwm-workspace--position (buffer-local-value 'exwm--frame
+                                                              (cdr pair))))
+        (exwm-workspace--set-desktop (car pair))))
+    ;; If the current workspace is deleted, switch to next one.
+    (when (eq frame exwm-workspace--current)
+      (exwm-workspace-switch nextw)))
+  ;; Reparent out the frame.
+  (let ((outer-id (frame-parameter frame 'exwm-outer-id)))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:UnmapWindow
+                       :window outer-id))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ReparentWindow
+                       :window outer-id
+                       :parent exwm--root
+                       :x 0
+                       :y 0))
+    ;; Reset the override-redirect.
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ChangeWindowAttributes
+                       :window outer-id
+                       :value-mask xcb:CW:OverrideRedirect
+                       :override-redirect 0))
+    ;; Remove fullscreen state.
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ewmh:set-_NET_WM_STATE
+                       :window outer-id
+                       :data nil))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:MapWindow
+                       :window outer-id)))
+  ;; Destroy the container.
+  (xcb:+request exwm--connection
+      (make-instance 'xcb:DestroyWindow
+                     :window (frame-parameter frame 'exwm-container)))
+  (xcb:flush exwm--connection)
+  ;; Update EWMH properties.
+  (exwm-workspace--update-ewmh-props)
+  ;; Update switch history.
+  (setq exwm-workspace--switch-history-outdated t)
+  (run-hooks 'exwm-workspace-list-change-hook))
+
+(defun exwm-workspace--on-delete-frame (frame)
+  "Hook run upon `delete-frame' that tears down FRAME's configuration as a workspace."
+  (cond
+   ((not (exwm-workspace--workspace-p frame))
+    (exwm--log "Frame `%s' is not a workspace" frame))
+   (t
+    (when (= 1 (exwm-workspace--count))
+      ;; The user managed to delete the last workspace, so create a new one.
+      (exwm--log "Last workspace deleted; create a new one")
+      ;; TODO: this makes sense in the hook.  But we need a function that takes
+      ;; care of converting a workspace into a regular unmanaged frame.
+      (let ((exwm-workspace--create-silently t))
+        (make-frame)))
+    (exwm-workspace--remove-frame-as-workspace frame))))
+
+(defun exwm-workspace--on-after-make-frame (frame)
+  "Hook run upon `make-frame' that configures FRAME as a workspace."
+  (cond
+   ((exwm-workspace--workspace-p frame)
+    (exwm--log "Frame `%s' is already a workspace" frame))
+   ((not (display-graphic-p frame))
+    (exwm--log "Frame `%s' is not graphical" frame))
+   ((not (string-equal
+          (replace-regexp-in-string "\\.0$" ""
+                                    (slot-value exwm--connection 'display))
+          (replace-regexp-in-string "\\.0$" ""
+                                    (frame-parameter frame 'display))))
+    (exwm--log "Frame `%s' is on a different DISPLAY (%S instead of %S)"
+               frame
+               (frame-parameter frame 'display)
+               (slot-value exwm--connection 'display)))
+   ((frame-parameter frame 'unsplittable)
+    ;; We create floating frames with the "unsplittable" parameter set.
+    ;; Though it may not be a floating frame, we won't treat an
+    ;; unsplittable frame as a workspace anyway.
+    (exwm--log "Frame `%s' is floating" frame))
+   (t
+    (exwm--log "Adding frame `%s' as workspace" frame)
+    (exwm-workspace--add-frame-as-workspace frame))))
+
+(defun exwm-workspace--update-ewmh-props ()
+  "Update EWMH properties to match the workspace list."
+  (exwm--log)
+  (let ((num-workspaces (exwm-workspace--count)))
+    ;; Avoid setting 0 desktops.
+    (when (= 0 num-workspaces)
+      (setq num-workspaces 1))
+    ;; Set _NET_NUMBER_OF_DESKTOPS.
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ewmh:set-_NET_NUMBER_OF_DESKTOPS
+                       :window exwm--root :data num-workspaces))
+    ;; Set _NET_DESKTOP_GEOMETRY.
+    (exwm-workspace--set-desktop-geometry)
+    ;; Update workareas.
+    (exwm-workspace--update-workareas))
+  (xcb:flush exwm--connection))
+
+(defun exwm-workspace--modify-all-x-frames-parameters (new-x-parameters)
+  "Modifies `window-system-default-frame-alist' for the X Window System.
+NEW-X-PARAMETERS is an alist of frame parameters, merged into current
+`window-system-default-frame-alist' for the X Window System.  The parameters are
+applied to all subsequently created X frames."
+  (exwm--log)
+  ;; The parameters are modified in place; take current
+  ;; ones or insert a new X-specific list.
+  (let ((x-parameters (or (assq 'x window-system-default-frame-alist)
+                          (let ((new-x-parameters '(x)))
+                            (push new-x-parameters
+                                  window-system-default-frame-alist)
+                            new-x-parameters))))
+    (setf (cdr x-parameters)
+          (append new-x-parameters (cdr x-parameters)))))
+
+(defun exwm-workspace--handle-focus-in (_orig-func _event)
+  "Replacement for `handle-focus-in'."
+  (interactive "e"))
+
+(defun exwm-workspace--handle-focus-out (_orig-func _event)
+  "Replacement for `handle-focus-out'."
+  (interactive "e"))
+
+(defun exwm-workspace--init-minibuffer-frame ()
+  (exwm--log)
+  ;; Initialize workspaces without minibuffers.
+  (setq exwm-workspace--minibuffer
+        (make-frame '((window-system . x) (minibuffer . only)
+                      (left . 10000) (right . 10000)
+                      (width . 1) (height . 1)
+                      (client . nil))))
+  ;; This is the only usable minibuffer frame.
+  (setq default-minibuffer-frame exwm-workspace--minibuffer)
+  (exwm-workspace--modify-all-x-frames-parameters
+   '((minibuffer . nil)))
+  (let ((outer-id (string-to-number
+                   (frame-parameter exwm-workspace--minibuffer
+                                    'outer-window-id)))
+        (window-id (string-to-number
+                    (frame-parameter exwm-workspace--minibuffer
+                                     'window-id)))
+        (container (xcb:generate-id exwm--connection)))
+    (set-frame-parameter exwm-workspace--minibuffer
+                         'exwm-outer-id outer-id)
+    (set-frame-parameter exwm-workspace--minibuffer 'exwm-id window-id)
+    (set-frame-parameter exwm-workspace--minibuffer 'exwm-container
+                         container)
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:CreateWindow
+                       :depth 0
+                       :wid container
+                       :parent exwm--root
+                       :x 0
+                       :y 0
+                       :width 1
+                       :height 1
+                       :border-width 0
+                       :class xcb:WindowClass:InputOutput
+                       :visual 0
+                       :value-mask (logior xcb:CW:BackPixmap
+                                           xcb:CW:OverrideRedirect)
+                       :background-pixmap xcb:BackPixmap:ParentRelative
+                       :override-redirect 1))
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ewmh:set-_NET_WM_NAME
+                       :window container
+                       :data "EXWM minibuffer container"))
+    ;; Reparent the minibuffer frame to the container.
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ReparentWindow
+                       :window outer-id :parent container :x 0 :y 0))
+    ;; Map the container.
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:MapWindow
+                       :window container))
+    ;; Attach event listener for monitoring the frame
+    (xcb:+request exwm--connection
+        (make-instance 'xcb:ChangeWindowAttributes
+                       :window outer-id
+                       :value-mask xcb:CW:EventMask
+                       :event-mask xcb:EventMask:StructureNotify))
+    (xcb:+event exwm--connection 'xcb:ConfigureNotify
+                #'exwm-workspace--on-ConfigureNotify))
+  ;; Show/hide minibuffer / echo area when they're active/inactive.
+  (add-hook 'minibuffer-setup-hook #'exwm-workspace--on-minibuffer-setup)
+  (add-hook 'minibuffer-exit-hook #'exwm-workspace--on-minibuffer-exit)
+  (setq exwm-workspace--timer
+        (run-with-idle-timer 0 t #'exwm-workspace--on-echo-area-dirty))
+  (add-hook 'echo-area-clear-hook #'exwm-workspace--on-echo-area-clear)
+  ;; The default behavior of `display-buffer' (indirectly called by
+  ;; `minibuffer-completion-help') is not correct here.
+  (cl-pushnew '(exwm-workspace--display-buffer) display-buffer-alist
+              :test #'equal))
+
+(defun exwm-workspace--exit-minibuffer-frame ()
+  (exwm--log)
+  ;; Only on minibuffer-frame.
+  (remove-hook 'minibuffer-setup-hook #'exwm-workspace--on-minibuffer-setup)
+  (remove-hook 'minibuffer-exit-hook #'exwm-workspace--on-minibuffer-exit)
+  (remove-hook 'echo-area-clear-hook #'exwm-workspace--on-echo-area-clear)
+  (when exwm-workspace--timer
+    (cancel-timer exwm-workspace--timer)
+    (setq exwm-workspace--timer nil))
+  (setq display-buffer-alist
+        (cl-delete '(exwm-workspace--display-buffer) display-buffer-alist
+                   :test #'equal))
+  (setq default-minibuffer-frame nil)
+  (let ((id (frame-parameter exwm-workspace--minibuffer 'exwm-outer-id)))
+    (when (and exwm-workspace--minibuffer id)
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:ReparentWindow
+                         :window id
+                         :parent exwm--root
+                         :x 0
+                         :y 0)))
+    (setq exwm-workspace--minibuffer nil)))
+
+(defun exwm-workspace--init ()
+  "Initialize workspace module."
+  (exwm--log)
+  (exwm-workspace--init-switch-map)
+  ;; Prevent unexpected exit
+  (setq exwm-workspace--fullscreen-frame-count 0)
+  (exwm-workspace--modify-all-x-frames-parameters
+   '((internal-border-width . 0)))
+  (let ((initial-workspaces (frame-list)))
+    (if (not (exwm-workspace--minibuffer-own-frame-p))
+        ;; Initialize workspaces with minibuffers.
+        (when (< 1 (length initial-workspaces))
+          ;; Exclude the initial frame.
+          (dolist (i initial-workspaces)
+            (unless (frame-parameter i 'window-id)
+              (setq initial-workspaces (delq i initial-workspaces))))
+          (setq exwm-workspace--client
+                (frame-parameter (car initial-workspaces) 'client))
+          (let ((f (car initial-workspaces)))
+            ;; Remove the possible internal border.
+            (set-frame-parameter f 'internal-border-width 0)
+            ;; Prevent user from deleting the first frame by accident.
+            (set-frame-parameter f 'client nil)))
+      (exwm-workspace--init-minibuffer-frame)
+      ;; Remove/hide existing frames.
+      (dolist (f initial-workspaces)
+        (if (frame-parameter f 'client)
+            (progn
+              (unless exwm-workspace--client
+                (setq exwm-workspace--client (frame-parameter f 'client)))
+              (make-frame-invisible f))
+          (when (eq 'x (framep f))   ;do not delete the initial frame.
+            (delete-frame f))))
+      ;; Recreate one frame with the external minibuffer set.
+      (setq initial-workspaces (list (make-frame '((window-system . x)
+                                                   (client . nil))))))
+    ;; Prevent `other-buffer' from selecting already displayed EXWM buffers.
+    (modify-all-frames-parameters
+     '((buffer-predicate . exwm-layout--other-buffer-predicate)))
+    ;; Create remaining workspaces.
+    (dotimes (_ (- exwm-workspace-number (length initial-workspaces)))
+      (nconc initial-workspaces (list (make-frame '((window-system . x)
+                                                    (client . nil))))))
+    ;; Configure workspaces
+    (let ((exwm-workspace--create-silently t))
+      (dolist (i initial-workspaces)
+        (exwm-workspace--add-frame-as-workspace i))))
+  (xcb:flush exwm--connection)
+  ;; We have to advice `x-create-frame' or every call to it would hang EXWM
+  (advice-add 'x-create-frame :around #'exwm-workspace--x-create-frame)
+  ;; We have to manually handle focus-in and focus-out events for Emacs
+  ;; frames.
+  (advice-add 'handle-focus-in :around #'exwm-workspace--handle-focus-in)
+  (advice-add 'handle-focus-out :around #'exwm-workspace--handle-focus-out)
+  ;; Make new frames create new workspaces.
+  (add-hook 'after-make-frame-functions
+            #'exwm-workspace--on-after-make-frame)
+  (add-hook 'delete-frame-functions #'exwm-workspace--on-delete-frame)
+  (when (exwm-workspace--minibuffer-own-frame-p)
+    (add-hook 'exwm-input--event-hook
+              #'exwm-workspace--on-echo-area-clear))
+  ;; Switch to the first workspace
+  (exwm-workspace-switch 0 t)
+  ;; Prevent frame parameters introduced by this module from being
+  ;; saved/restored.
+  (dolist (i '(exwm-active exwm-outer-id exwm-id exwm-container exwm-geometry
+                           exwm-selected-window exwm-urgency fullscreen))
+    (unless (assq i frameset-filter-alist)
+      (push (cons i :never) frameset-filter-alist))))
+
+(defun exwm-workspace--exit ()
+  "Exit the workspace module."
+  (exwm--log)
+  (when (exwm-workspace--minibuffer-own-frame-p)
+    (exwm-workspace--exit-minibuffer-frame))
+  (advice-remove 'x-create-frame #'exwm-workspace--x-create-frame)
+  (advice-remove 'handle-focus-in #'exwm-workspace--handle-focus-in)
+  (advice-remove 'handle-focus-out #'exwm-workspace--handle-focus-out)
+  (remove-hook 'after-make-frame-functions
+               #'exwm-workspace--on-after-make-frame)
+  (remove-hook 'delete-frame-functions
+               #'exwm-workspace--on-delete-frame)
+  (when (exwm-workspace--minibuffer-own-frame-p)
+    (remove-hook 'exwm-input--event-hook
+                 #'exwm-workspace--on-echo-area-clear))
+  ;; Hide & reparent out all frames (save-set can't be used here since
+  ;; X windows will be re-mapped).
+  (setq exwm-workspace--current nil)
+  (dolist (i exwm-workspace--list)
+    (exwm-workspace--remove-frame-as-workspace i)
+    (modify-frame-parameters i '((exwm-selected-window . nil)
+                                 (exwm-urgency . nil)
+                                 (exwm-outer-id . nil)
+                                 (exwm-id . nil)
+                                 (exwm-container . nil)
+                                 ;; (internal-border-width . nil) ; integerp
+                                 ;; (client . nil)
+                                 (fullscreen . nil)
+                                 (buffer-predicate . nil))))
+  ;; Restore the 'client' frame parameter (before `exwm-exit').
+  (when exwm-workspace--client
+    (dolist (f exwm-workspace--list)
+      (set-frame-parameter f 'client exwm-workspace--client))
+    (when (exwm-workspace--minibuffer-own-frame-p)
+      (set-frame-parameter exwm-workspace--minibuffer 'client
+                           exwm-workspace--client))
+    (setq exwm-workspace--client nil)))
+
+(defun exwm-workspace--post-init ()
+  "The second stage in the initialization of the workspace module."
+  (exwm--log)
+  (when exwm-workspace--client
+    ;; Reset the 'fullscreen' frame parameter to make emacsclinet frames
+    ;; fullscreen (even without the RandR module enabled).
+    (dolist (i exwm-workspace--list)
+      (set-frame-parameter i 'fullscreen nil)
+      (set-frame-parameter i 'fullscreen 'fullboth)))
+  ;; Wait until all workspace frames are resized.
+  (with-timeout (1)
+    (while (< exwm-workspace--fullscreen-frame-count (exwm-workspace--count))
+      (accept-process-output nil 0.1)))
+  (setq exwm-workspace--fullscreen-frame-count nil))
+
+
+
+(provide 'exwm-workspace)
+
+;;; exwm-workspace.el ends here