;;; ace-window.el --- Quickly switch windows. -*- lexical-binding: t -*-
;; Copyright (C) 2015 Free Software Foundation, Inc.
;; Author: Oleh Krehel <ohwoeowho@gmail.com>
;; Maintainer: Oleh Krehel <ohwoeowho@gmail.com>
;; URL: https://github.com/abo-abo/ace-window
;; Package-Version: 20180814.1516
;; Version: 0.9.0
;; Package-Requires: ((avy "0.2.0"))
;; Keywords: window, location
;; This file is part of GNU Emacs.
;; This file 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, or (at your option)
;; any later version.
;; This program 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.
;; For a full copy of the GNU General Public License
;; see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; The main function, `ace-window' is meant to replace `other-window'
;; by assigning each window a short, unique label. When there are only
;; two windows present, `other-window' is called (unless
;; aw-dispatch-always is set non-nil). If there are more, each
;; window will have its first label character highlighted. Once a
;; unique label is typed, ace-window will switch to that window.
;;
;; To setup this package, just add to your .emacs:
;;
;; (global-set-key (kbd "M-o") 'ace-window)
;;
;; replacing "M-o" with an appropriate shortcut.
;;
;; By default, ace-window uses numbers for window labels so the window
;; labeling is intuitively ordered. But if you prefer to type keys on
;; your home row for quicker access, use this setting:
;;
;; (setq aw-keys '(?a ?s ?d ?f ?g ?h ?j ?k ?l))
;;
;; Whenever ace-window prompts for a window selection, it grays out
;; all the window characters, highlighting window labels in red. To
;; disable this behavior, set this:
;;
;; (setq aw-background nil)
;;
;; If you want to know the selection characters ahead of time, turn on
;; `ace-window-display-mode'.
;;
;; When prefixed with one `universal-argument', instead of switching
;; to the selected window, the selected window is swapped with the
;; current one.
;;
;; When prefixed with two `universal-argument', the selected window is
;; deleted instead.
;;; Code:
(require 'avy)
(require 'ring)
(require 'subr-x)
;;* Customization
(defgroup ace-window nil
"Quickly switch current window."
:group 'convenience
:prefix "aw-")
(defcustom aw-keys '(?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9)
"Keys for selecting window."
:type '(repeat character))
(defcustom aw-scope 'global
"The scope used by `ace-window'."
:type '(choice
(const :tag "visible frames" visible)
(const :tag "global" global)
(const :tag "frame" frame)))
(defcustom aw-minibuffer-flag nil
"When non-nil, also display `ace-window-mode' string in the minibuffer when ace-window is active."
:type 'boolean)
(defcustom aw-ignored-buffers '("*Calc Trail*" "*LV*")
"List of buffers and major-modes to ignore when choosing a window from the window list.
Active only when `aw-ignore-on' is non-nil. Windows displaying these
buffers can still be chosen by typing their specific labels."
:type '(repeat string))
(defcustom aw-ignore-on t
"When t, `ace-window' will ignore buffers and major-modes in `aw-ignored-buffers'.
Use M-0 `ace-window' to toggle this value."
:type 'boolean)
(defcustom aw-ignore-current nil
"When t, `ace-window' will ignore `selected-window'."
:type 'boolean)
(defcustom aw-background t
"When t, `ace-window' will dim out all buffers temporarily when used."
:type 'boolean)
(defcustom aw-leading-char-style 'char
"Style of the leading char overlay."
:type '(choice
(const :tag "single char" 'char)
(const :tag "full path" 'path)))
(defcustom aw-dispatch-always nil
"When non-nil, `ace-window' will issue a `read-char' even for one window.
This will make `ace-window' act different from `other-window' for
one or two windows."
:type 'boolean)
(defcustom aw-dispatch-when-more-than 2
"If the number of windows is more than this, activate ace-window-ness."
:type 'integer)
(defcustom aw-reverse-frame-list nil
"When non-nil `ace-window' will order frames for selection in
the reverse of `frame-list'"
:type 'boolean)
(defcustom aw-frame-offset '(13 . 23)
"Increase in pixel offset for new ace-window frames relative to the selected frame.
Its value is an (x-offset . y-offset) pair in pixels."
:type '(cons integer integer))
(defcustom aw-frame-size nil
"Frame size to make new ace-window frames.
Its value is a (width . height) pair in pixels or nil for the default frame size.
(0 . 0) is special and means make the frame size the same as the last selected frame size."
:type '(cons integer integer))
(defcustom aw-char-position 'top-left
"Window positions of the character overlay.
Consider changing this if the overlay tends to overlap with other things."
:type '(choice
(const :tag "top left corner only" 'top-left)
(const :tag "both left corners" 'left)))
;; Must be defined before `aw-make-frame-char' since its :set function references this.
(defvar aw-dispatch-alist
'((?x aw-delete-window "Delete Window")
(?m aw-swap-window "Swap Windows")
(?M aw-move-window "Move Window")
(?j aw-switch-buffer-in-window "Select Buffer")
(?n aw-flip-window)
(?u aw-switch-buffer-other-window "Switch Buffer Other Window")
(?c aw-split-window-fair "Split Fair Window")
(?v aw-split-window-vert "Split Vert Window")
(?b aw-split-window-horz "Split Horz Window")
(?o delete-other-windows "Delete Other Windows")
(?? aw-show-dispatch-help))
"List of actions for `aw-dispatch-default'.
Each action is a list of either:
(char function description) where function takes a single window argument
or
(char function) where function takes no argument and the description is omitted.")
(defun aw-set-make-frame-char (option value)
;; Signal an error if `aw-make-frame-char' is ever set to an invalid
;; or conflicting value.
(when value
(cond ((not (characterp value))
(user-error "`aw-make-frame-char' must be a character, not `%s'" value))
((memq value aw-keys)
(user-error "`aw-make-frame-char' is `%c'; this conflicts with the same character in `aw-keys'" value))
((assq value aw-dispatch-alist)
(user-error "`aw-make-frame-char' is `%c'; this conflicts with the same character in `aw-dispatch-alist'" value))))
(set option value))
(defcustom aw-make-frame-char ?z
"Non-existing ace window label character that triggers creation of a new single-window frame for display."
:set 'aw-set-make-frame-char
:type 'character)
(defface aw-leading-char-face
'((((class color)) (:foreground "red"))
(((background dark)) (:foreground "gray100"))
(((background light)) (:foreground "gray0"))
(t (:foreground "gray100" :underline nil)))
"Face for each window's leading char.")
(defface aw-background-face
'((t (:foreground "gray40")))
"Face for whole window background during selection.")
(defface aw-mode-line-face
'((t (:inherit mode-line-buffer-id)))
"Face used for displaying the ace window key in the mode-line.")
(defface aw-key-face
'((t :inherit font-lock-builtin-face))
"Face used by `aw-show-dispatch-help'.")
;;* Implementation
(defun aw-ignored-p (window)
"Return t if WINDOW should be ignored when choosing from the window list."
(or (and aw-ignore-on
;; Ignore major-modes and buffer-names in `aw-ignored-buffers'.
(or (memq (buffer-local-value 'major-mode (window-buffer window))
aw-ignored-buffers)
(member (buffer-name (window-buffer window)) aw-ignored-buffers)))
;; Ignore selected window if `aw-ignore-current' is non-nil.
(and aw-ignore-current
(equal window (selected-window)))
;; When `ignore-window-parameters' is nil, ignore windows whose
;; `no-other-window’ or `no-delete-other-windows' parameter is non-nil.
(unless ignore-window-parameters
(cl-case this-command
(ace-select-window (window-parameter window 'no-other-window))
(ace-delete-window (window-parameter window 'no-delete-other-windows))
(ace-delete-other-windows (window-parameter
window 'no-delete-other-windows))))))
(defun aw-window-list ()
"Return the list of interesting windows."
(sort
(cl-remove-if
(lambda (w)
(let ((f (window-frame w)))
(or (not (and (frame-live-p f)
(frame-visible-p f)))
(string= "initial_terminal" (terminal-name f))
(aw-ignored-p w))))
(cl-case aw-scope
(visible
(cl-mapcan #'window-list (visible-frame-list)))
(global
(cl-mapcan #'window-list (frame-list)))
(frame
(window-list))
(t
(error "Invalid `aw-scope': %S" aw-scope))))
'aw-window<))
(defvar aw-overlays-back nil
"Hold overlays for when `aw-background' is t.")
(defvar ace-window-mode nil
"Minor mode during the selection process.")
;; register minor mode
(or (assq 'ace-window-mode minor-mode-alist)
(nconc minor-mode-alist
(list '(ace-window-mode ace-window-mode))))
(defvar aw-empty-buffers-list nil
"Store the read-only empty buffers which had to be modified.
Modify them back eventually.")
(defun aw--done ()
"Clean up mode line and overlays."
;; mode line
(aw-set-mode-line nil)
;; background
(mapc #'delete-overlay aw-overlays-back)
(setq aw-overlays-back nil)
(avy--remove-leading-chars)
(dolist (b aw-empty-buffers-list)
(with-current-buffer b
(when (string= (buffer-string) " ")
(let ((inhibit-read-only t))
(delete-region (point-min) (point-max))))))
(setq aw-empty-buffers-list nil))
(defun aw--overlay-str (wnd pos path)
"Return the replacement text for an overlay in WND at POS,
accessible by typing PATH."
(let ((old-str (or
(ignore-errors
(with-selected-window wnd
(buffer-substring pos (1+ pos))))
"")))
(concat
(cl-case aw-leading-char-style
(char
(string (avy--key-to-char (car (last path)))))
(path
(mapconcat
(lambda (x) (string (avy--key-to-char x)))
(reverse path)
""))
(t
(error "Bad `aw-leading-char-style': %S"
aw-leading-char-style)))
(cond ((string-equal old-str "\t")
(make-string (1- tab-width) ?\ ))
((string-equal old-str "\n")
"\n")
(t
(make-string
(max 0 (1- (string-width old-str)))
?\ ))))))
(defun aw--lead-overlay (path leaf)
"Create an overlay using PATH at LEAF.
LEAF is (PT . WND)."
(let ((wnd (cdr leaf)))
(with-selected-window wnd
(when (= 0 (buffer-size))
(push (current-buffer) aw-empty-buffers-list)
(let ((inhibit-read-only t))
(insert " ")))
(let* ((pt (car leaf))
(ol (make-overlay pt (1+ pt) (window-buffer wnd))))
(overlay-put ol 'display (aw--overlay-str wnd pt path))
(overlay-put ol 'face 'aw-leading-char-face)
(overlay-put ol 'window wnd)
(push ol avy--overlays-lead))
(when (eq aw-char-position 'left)
(let* ((pt
(save-excursion
;; Move to the start of the last visible line in the buffer.
(move-to-window-line -1)
(move-beginning-of-line nil)
;; If this line is empty, use the previous line so we
;; have space for the overlay.
(when (equal (point) (point-max))
(forward-line -1))
(point)))
(ol (make-overlay pt (1+ pt) (window-buffer wnd))))
(overlay-put ol 'display (aw--overlay-str wnd pt path))
(overlay-put ol 'face 'aw-leading-char-face)
(overlay-put ol 'window wnd)
(push ol avy--overlays-lead))))))
(defun aw--make-backgrounds (wnd-list)
"Create a dim background overlay for each window on WND-LIST."
(when aw-background
(setq aw-overlays-back
(mapcar (lambda (w)
(let ((ol (make-overlay
(window-start w)
(window-end w)
(window-buffer w))))
(overlay-put ol 'face 'aw-background-face)
ol))
wnd-list))))
(define-obsolete-variable-alias
'aw-flip-keys 'aw--flip-keys "0.1.0"
"Use `aw-dispatch-alist' instead.")
(defvar aw-dispatch-function 'aw-dispatch-default
"Function to call when a character not in `aw-keys' is pressed.")
(defvar aw-action nil
"Function to call at the end of `aw-select'.")
(defun aw-set-mode-line (str)
"Set mode line indicator to STR."
(setq ace-window-mode str)
(when (and aw-minibuffer-flag ace-window-mode)
(message "%s" (string-trim-left str)))
(force-mode-line-update))
(defun aw--dispatch-action (char)
"Return item from `aw-dispatch-alist' matching CHAR."
(assoc char aw-dispatch-alist))
(defun aw-make-frame ()
"Make a new Emacs frame using the values of `aw-frame-size' and `aw-frame-offset'."
(make-frame
(delq nil
(list
;; This first parameter is important because an
;; aw-dispatch-alist command may not want to leave this
;; frame with input focus. If it is given focus, the
;; command may not be able to return focus to a different
;; frame since this is done asynchronously by the window
;; manager.
'(no-focus-on-map . t)
(when aw-frame-size
(cons 'width
(if (zerop (car aw-frame-size))
(frame-width)
(car aw-frame-size))))
(when aw-frame-size
(cons 'height
(if (zerop (cdr aw-frame-size))
(frame-height)
(car aw-frame-size))))
(cons 'left (+ (car aw-frame-offset)
(car (frame-position))))
(cons 'top (+ (cdr aw-frame-offset)
(cdr (frame-position))))))))
(defun aw-use-frame (window)
"Create a new frame using the contents of WINDOW.
The new frame is set to the same size as the previous frame, offset by
`aw-frame-offset' (x . y) pixels."
(aw-switch-to-window window)
(aw-make-frame))
(defun aw-clean-up-avy-current-path ()
"Edit `avy-current-path' so only window label characters remain."
;; Remove any possible ace-window command char that may
;; precede the last specified window label, so
;; functions can use `avy-current-path' as the chosen
;; window label.
(when (and (> (length avy-current-path) 0)
(assq (aref avy-current-path 0) aw-dispatch-alist))
(setq avy-current-path (substring avy-current-path 1))))
(defun aw-dispatch-default (char)
"Perform an action depending on CHAR."
(cond ((and (fboundp 'avy-mouse-event-window)
(avy-mouse-event-window char)))
((= char (aref (kbd "C-g") 0))
(throw 'done 'exit))
((= char aw-make-frame-char)
;; Make a new frame and perform any action on its window.
(let ((start-win (selected-window))
(end-win (frame-selected-window (aw-make-frame))))
(if aw-action
;; Action must be called from the start-win. The action
;; determines which window to leave selected.
(progn (select-frame-set-input-focus (window-frame start-win))
(funcall aw-action end-win))
;; Select end-win when no action
(aw-switch-to-window end-win)))
(throw 'done 'exit))
(t
(let ((action (aw--dispatch-action char)))
(if action
(cl-destructuring-bind (_key fn &optional description) action
(if (and fn description)
(prog1 (setq aw-action fn)
(aw-set-mode-line (format " Ace - %s" description)))
(funcall fn)
(throw 'done 'exit)))
(aw-clean-up-avy-current-path)
;; Prevent any char from triggering an avy dispatch command.
(let ((avy-dispatch-alist))
(avy-handler-default char)))))))
(defun aw-select (mode-line &optional action)
"Return a selected other window.
Amend MODE-LINE to the mode line for the duration of the selection."
(setq aw-action action)
(let ((start-window (selected-window))
(next-window-scope (cl-case aw-scope
('visible 'visible)
('global 'visible)
('frame 'frame)))
(wnd-list (aw-window-list))
window)
(setq window
(cond ((<= (length wnd-list) 1)
(when aw-dispatch-always
(setq aw-action
(unwind-protect
(catch 'done
(funcall aw-dispatch-function (read-char)))
(aw--done)))
(when (eq aw-action 'exit)
(setq aw-action nil)))
(or (car wnd-list) start-window))
((and (<= (length wnd-list) aw-dispatch-when-more-than)
(not aw-dispatch-always)
(not aw-ignore-current))
(let ((wnd (next-window nil nil next-window-scope)))
(while (and (or (not (memq wnd wnd-list))
(aw-ignored-p wnd))
(not (equal wnd start-window)))
(setq wnd (next-window wnd nil next-window-scope)))
wnd))
(t
(let ((candidate-list
(mapcar (lambda (wnd)
(cons (aw-offset wnd) wnd))
wnd-list)))
(aw--make-backgrounds wnd-list)
(aw-set-mode-line mode-line)
;; turn off helm transient map
(remove-hook 'post-command-hook 'helm--maybe-update-keymap)
(unwind-protect
(let* ((avy-handler-function aw-dispatch-function)
(avy-translate-char-function #'identity)
(res (avy-read (avy-tree candidate-list aw-keys)
#'aw--lead-overlay
#'avy--remove-leading-chars)))
(if (eq res 'exit)
(setq aw-action nil)
(or (cdr res)
start-window)))
(aw--done))))))
(if aw-action
(funcall aw-action window)
window)))
;;* Interactive
;;;###autoload
(defun ace-select-window ()
"Ace select window."
(interactive)
(aw-select " Ace - Window"
#'aw-switch-to-window))
;;;###autoload
(defun ace-delete-window ()
"Ace delete window."
(interactive)
(aw-select " Ace - Delete Window"
#'aw-delete-window))
;;;###autoload
(defun ace-swap-window ()
"Ace swap window."
(interactive)
(aw-select " Ace - Swap Window"
#'aw-swap-window))
;;;###autoload
(defun ace-delete-other-windows ()
"Ace delete other windows."
(interactive)
(aw-select " Ace - Delete Other Windows"
#'delete-other-windows))
(define-obsolete-function-alias
'ace-maximize-window 'ace-delete-other-windows "0.10.0")
;;;###autoload
(defun ace-window (arg)
"Select a window.
Perform an action based on ARG described below.
By default, behaves like extended `other-window'.
Prefixed with one \\[universal-argument], does a swap between the
selected window and the current window, so that the selected
buffer moves to current window (and current buffer moves to
selected window).
Prefixed with two \\[universal-argument]'s, deletes the selected
window."
(interactive "p")
(cl-case arg
(0
(setq aw-ignore-on
(not aw-ignore-on))
(ace-select-window))
(4 (ace-swap-window))
(16 (ace-delete-window))
(t (ace-select-window))))
;;* Utility
(unless (fboundp 'frame-position)
(defun frame-position (&optional frame)
(let ((pl (frame-parameter frame 'left))
(pt (frame-parameter frame 'top)))
(when (consp pl)
(setq pl (eval pl)))
(when (consp pt)
(setq pt (eval pt)))
(cons pl pt))))
(defun aw-window< (wnd1 wnd2)
"Return true if WND1 is less than WND2.
This is determined by their respective window coordinates.
Windows are numbered top down, left to right."
(let ((f1 (window-frame wnd1))
(f2 (window-frame wnd2))
(e1 (window-edges wnd1))
(e2 (window-edges wnd2)))
(cond ((< (car (frame-position f1)) (car (frame-position f2)))
(not aw-reverse-frame-list))
((> (car (frame-position f1)) (car (frame-position f2)))
aw-reverse-frame-list)
((< (car e1) (car e2))
t)
((> (car e1) (car e2))
nil)
((< (cadr e1) (cadr e2))
t))))
(defvar aw--window-ring (make-ring 10)
"Hold the window switching history.")
(defun aw--push-window (window)
"Store WINDOW to `aw--window-ring'."
(when (or (zerop (ring-length aw--window-ring))
(not (equal
(ring-ref aw--window-ring 0)
window)))
(ring-insert aw--window-ring (selected-window))))
(defun aw--pop-window ()
"Return the removed top of `aw--window-ring'."
(let (res)
(condition-case nil
(while (or (not (window-live-p
(setq res (ring-remove aw--window-ring 0))))
(equal res (selected-window))))
(error
(if (= (length (aw-window-list)) 2)
(progn
(other-window 1)
(setq res (selected-window)))
(error "No previous windows stored"))))
res))
(defun aw-switch-to-window (window)
"Switch to the window WINDOW."
(let ((frame (window-frame window)))
(aw--push-window (selected-window))
(when (and (frame-live-p frame)
(not (eq frame (selected-frame))))
(select-frame-set-input-focus frame))
(if (window-live-p window)
(select-window window)
(error "Got a dead window %S" window))))
(defun aw-flip-window ()
"Switch to the window you were previously in."
(interactive)
(aw-switch-to-window (aw--pop-window)))
(defun aw-show-dispatch-help ()
"Display action shortucts in echo area."
(interactive)
(message "%s" (mapconcat
(lambda (action)
(cl-destructuring-bind (key fn &optional description) action
(format "%s: %s"
(propertize
(char-to-string key)
'face 'aw-key-face)
(or description fn))))
aw-dispatch-alist
"\n"))
;; Prevent this from replacing any help display
;; in the minibuffer.
(let (aw-minibuffer-flag)
(mapc #'delete-overlay aw-overlays-back)
(call-interactively 'ace-window)))
(defun aw-delete-window (window)
"Delete window WINDOW."
(let ((frame (window-frame window)))
(when (and (frame-live-p frame)
(not (eq frame (selected-frame))))
(select-frame-set-input-focus (window-frame window)))
(if (= 1 (length (window-list)))
(delete-frame frame)
(if (window-live-p window)
(delete-window window)
(error "Got a dead window %S" window)))))
(defun aw-switch-buffer-in-window (window)
"Select buffer in WINDOW."
(aw-switch-to-window window)
(aw--switch-buffer))
(declare-function ivy-switch-buffer "ext:ivy")
(defun aw--switch-buffer ()
(cond ((bound-and-true-p ivy-mode)
(ivy-switch-buffer))
((bound-and-true-p ido-mode)
(ido-switch-buffer))
(t
(call-interactively 'switch-to-buffer))))
(defcustom aw-swap-invert nil
"When non-nil, the other of the two swapped windows gets the point."
:type 'boolean)
(defun aw-swap-window (window)
"Swap buffers of current window and WINDOW."
(cl-labels ((swap-windows (window1 window2)
"Swap the buffers of WINDOW1 and WINDOW2."
(let ((buffer1 (window-buffer window1))
(buffer2 (window-buffer window2)))
(set-window-buffer window1 buffer2)
(set-window-buffer window2 buffer1)
(select-window window2))))
(let ((frame (window-frame window))
(this-window (selected-window)))
(when (and (frame-live-p frame)
(not (eq frame (selected-frame))))
(select-frame-set-input-focus (window-frame window)))
(when (and (window-live-p window)
(not (eq window this-window)))
(aw--push-window this-window)
(if aw-swap-invert
(swap-windows window this-window)
(swap-windows this-window window))))))
(defun aw-move-window (window)
"Move the current buffer to WINDOW.
Switch the current window to the previous buffer."
(let ((buffer (current-buffer)))
(switch-to-buffer (other-buffer))
(aw-switch-to-window window)
(switch-to-buffer buffer)))
(defun aw-split-window-vert (window)
"Split WINDOW vertically."
(select-window window)
(split-window-vertically))
(defun aw-split-window-horz (window)
"Split WINDOW horizontally."
(select-window window)
(split-window-horizontally))
(defcustom aw-fair-aspect-ratio 2
"The aspect ratio to aim for when splitting windows.
Sizes are based on the number of characters, not pixels.
Increase to prefer wider windows, or decrease for taller windows."
:type 'number)
(defun aw-split-window-fair (window)
"Split WINDOW vertically or horizontally, based on its current dimensions.
Modify `aw-fair-aspect-ratio' to tweak behavior."
(let ((w (window-body-width window))
(h (window-body-height window)))
(if (< (* h aw-fair-aspect-ratio) w)
(aw-split-window-horz window)
(aw-split-window-vert window))))
(defun aw-switch-buffer-other-window (window)
"Switch buffer in WINDOW without selecting WINDOW."
(aw-switch-to-window window)
(aw--switch-buffer)
(aw-flip-window))
(defun aw-offset (window)
"Return point in WINDOW that's closest to top left corner.
The point is writable, i.e. it's not part of space after newline."
(let ((h (window-hscroll window))
(beg (window-start window))
(end (window-end window))
(inhibit-field-text-motion t))
(with-current-buffer
(window-buffer window)
(save-excursion
(goto-char beg)
(while (and (< (point) end)
(< (- (line-end-position)
(line-beginning-position))
h))
(forward-line))
(+ (point) h)))))
;;* Mode line
;;;###autoload
(define-minor-mode ace-window-display-mode
"Minor mode for showing the ace window key in the mode line."
:global t
(if ace-window-display-mode
(progn
(aw-update)
(set-default
'mode-line-format
`((ace-window-display-mode
(:eval (window-parameter (selected-window) 'ace-window-path)))
,@(assq-delete-all
'ace-window-display-mode
(default-value 'mode-line-format))))
(force-mode-line-update t)
(add-hook 'window-configuration-change-hook 'aw-update)
;; Add at the end so does not precede select-frame call.
(add-hook 'after-make-frame-functions (lambda (_) (aw-update)) t))
(set-default
'mode-line-format
(assq-delete-all
'ace-window-display-mode
(default-value 'mode-line-format)))
(remove-hook 'window-configuration-change-hook 'aw-update)
(remove-hook 'after-make-frame-functions 'aw-update)))
(defun aw-update ()
"Update ace-window-path window parameter for all windows.
Ensure all windows are labeled so the user can select a specific
one, even from the set of windows typically ignored when making a
window list."
(let ((aw-ignore-on)
(aw-ignore-current)
(ignore-window-parameters t))
(avy-traverse
(avy-tree (aw-window-list) aw-keys)
(lambda (path leaf)
(set-window-parameter
leaf 'ace-window-path
(propertize
(apply #'string (reverse path))
'face 'aw-mode-line-face))))))
(provide 'ace-window)
;;; ace-window.el ends here
