-;;; tab-bar.el --- frame-local tab bar with window configurations -*- lexical-binding: t; -*-
+;;; tab-bar.el --- frame-local tab bar with named persistent window configurations -*- lexical-binding: t; -*-
;; Copyright (C) 2019 Free Software Foundation, Inc.
(defun tab-bar-new-tab ()
(let ((tab `(tab
(name . ,(tab-bar-tab-name))
+ (time . ,(time-convert nil 'integer))
(wc . ,(current-window-configuration))
(ws . ,(window-state-get
(frame-root-window (selected-frame)) 'writable)))))
(setq prev-tab tabs))
(setcdr prev-tab (cons new-tab (cdr prev-tab))))))))
(set-frame-parameter nil 'tabs tabs)
- (tab-bar-select-tab new-tab)))
+ (tab-bar-select-tab new-tab)
+ (unless (and (display-graphic-p) tab-bar-mode)
+ (message "Added new tab with the current window configuration"))))
\f
(defcustom tab-bar-close-tab-select 'right
(const :tag "Select right tab" right))
:version "27.1")
-(defun tab-bar-close-current-tab (tab)
+(defun tab-bar-close-current-tab (&optional tab select-tab)
"Close the current TAB.
After closing the current tab switch to the tab
-specified by `tab-bar-close-tab-select'."
- (interactive
- (list
- (let* ((tabs (tab-bar-tabs))
- (prev-tab (tab-bar-find-prev-tab tabs)))
- (if prev-tab
- (tab-bar-select-tab (car prev-tab))
- (car tabs)))))
- (let* ((tabs (tab-bar-tabs))
- (i-tab (- (length tabs) (length (memq tab tabs))))
- (i-select
- (cond
- ((eq tab-bar-close-tab-select 'left)
- (1- i-tab))
- ((eq tab-bar-close-tab-select 'right)
- ;; Do nothing: the next tab will take
- ;; the index of the closed tab
- i-tab)
- (t 0)))
- (tabs (delq tab tabs))
- (i-select (max 0 (min (1- (length tabs)) i-select)))
- (select-tab (nth i-select tabs)))
+specified by `tab-bar-close-tab-select', or to `select-tab'
+if its value is provided."
+ (interactive)
+ (let ((tabs (tab-bar-tabs)))
+ (unless tab
+ (let ((prev-tab (tab-bar-find-prev-tab tabs)))
+ (setq tab (if prev-tab
+ (car (cdr prev-tab))
+ (car tabs)))))
+ (if select-tab
+ (setq tabs (delq tab tabs))
+ (let* ((i-tab (- (length tabs) (length (memq tab tabs))))
+ (i-select
+ (cond
+ ((eq tab-bar-close-tab-select 'left)
+ (1- i-tab))
+ ((eq tab-bar-close-tab-select 'right)
+ ;; Do nothing: the next tab will take
+ ;; the index of the closed tab
+ i-tab)
+ (t 0))))
+ (setq tabs (delq tab tabs)
+ i-select (max 0 (min (1- (length tabs)) i-select))
+ select-tab (nth i-select tabs))))
(set-frame-parameter nil 'tabs tabs)
(tab-bar-select-tab select-tab)))
(set-frame-parameter nil 'tabs (delq tab (tab-bar-tabs)))
(force-window-update))))
+\f
+;;; Non-graphical access to frame-local tabs (named window configurations)
+
+(defun make-tab ()
+ "Create a new named window configuration without having to click a tab."
+ (interactive)
+ (tab-bar-add-tab)
+ (unless (and (display-graphic-p) tab-bar-mode)
+ (message "Added new tab with the current window configuration")))
+
+(defun delete-tab ()
+ "Delete the current window configuration without clicking a close button."
+ (interactive)
+ (tab-bar-close-current-tab)
+ (unless (and (display-graphic-p) tab-bar-mode)
+ (message "Deleted the current tab")))
+
+(defalias 'list-tabs 'tab-bar-list)
+
+(defun tab-bar-list ()
+ "Display a list of named window configurations.
+The list is displayed in the buffer `*Tabs*'.
+
+In this list of window configurations you can delete or select them.
+Type ? after invocation to get help on commands available.
+Type q to remove the list of window configurations from the display.
+
+The first column shows `D' for for a window configuration you have
+marked for deletion."
+ (interactive)
+ (let ((dir default-directory)
+ (minibuf (minibuffer-selected-window)))
+ (let ((tab-bar-mode t)) ; don't enable tab-bar-mode if it's disabled
+ (tab-bar-add-tab))
+ ;; Handle the case when it's called in the active minibuffer.
+ (when minibuf (select-window (minibuffer-selected-window)))
+ (delete-other-windows)
+ ;; Create a new window to replace the existing one, to not break the
+ ;; window parameters (e.g. prev/next buffers) of the window just saved
+ ;; to the window configuration. So when a saved window is restored,
+ ;; its parameters left intact.
+ (split-window) (delete-window)
+ (let ((switch-to-buffer-preserve-window-point nil))
+ (switch-to-buffer (tab-bar-list-noselect)))
+ (setq default-directory dir))
+ (message "Commands: d, x; RET; q to quit; ? for help."))
+
+(defun tab-bar-list-noselect ()
+ "Create and return a buffer with a list of window configurations.
+The list is displayed in a buffer named `*Tabs*'.
+
+For more information, see the function `tab-bar-list'."
+ (let* ((tabs (delq nil (mapcar (lambda (tab) ; remove current tab
+ (unless (eq (car tab) 'current-tab)
+ tab))
+ (tab-bar-tabs))))
+ ;; Sort by recency
+ (tabs (sort tabs (lambda (a b) (< (cdr (assq 'time b))
+ (cdr (assq 'time a)))))))
+ (with-current-buffer (get-buffer-create
+ (format " *Tabs*<%s>" (or (frame-parameter nil 'window-id)
+ (frame-parameter nil 'name))))
+ (erase-buffer)
+ (tab-bar-list-mode)
+ (setq buffer-read-only nil)
+ ;; Vertical alignment to the center of the frame
+ (insert-char ?\n (/ (- (frame-height) (length tabs) 1) 2))
+ ;; Horizontal alignment to the center of the frame
+ (setq tab-bar-list-column (- (/ (frame-width) 2) 15))
+ (dolist (tab tabs)
+ (insert (propertize
+ (format "%s %s\n"
+ (make-string tab-bar-list-column ?\040)
+ (propertize
+ (cdr (assq 'name tab))
+ 'mouse-face 'highlight
+ 'help-echo "mouse-2: select this window configuration"))
+ 'tab tab)))
+ (goto-char (point-min))
+ (goto-char (or (next-single-property-change (point) 'tab) (point-min)))
+ (when (> (length tabs) 1)
+ (tab-bar-list-next-line))
+ (move-to-column tab-bar-list-column)
+ (set-buffer-modified-p nil)
+ (current-buffer))))
+
+(defvar tab-bar-list-column 3)
+(make-variable-buffer-local 'tab-bar-list-column)
+
+(defvar tab-bar-list-mode-map
+ (let ((map (make-keymap)))
+ (suppress-keymap map t)
+ (define-key map "q" 'quit-window)
+ (define-key map "\C-m" 'tab-bar-list-select)
+ (define-key map "d" 'tab-bar-list-delete)
+ (define-key map "k" 'tab-bar-list-delete)
+ (define-key map "\C-d" 'tab-bar-list-delete-backwards)
+ (define-key map "\C-k" 'tab-bar-list-delete)
+ (define-key map "x" 'tab-bar-list-execute)
+ (define-key map " " 'tab-bar-list-next-line)
+ (define-key map "n" 'tab-bar-list-next-line)
+ (define-key map "p" 'tab-bar-list-prev-line)
+ (define-key map "\177" 'tab-bar-list-backup-unmark)
+ (define-key map "?" 'describe-mode)
+ (define-key map "u" 'tab-bar-list-unmark)
+ (define-key map [mouse-2] 'tab-bar-list-mouse-select)
+ (define-key map [follow-link] 'mouse-face)
+ map)
+ "Local keymap for `tab-bar-list-mode' buffers.")
+
+(define-derived-mode tab-bar-list-mode nil "Window Configurations"
+ "Major mode for selecting a window configuration.
+Each line describes one window configuration in Emacs.
+Letters do not insert themselves; instead, they are commands.
+\\<tab-bar-list-mode-map>
+\\[tab-bar-list-mouse-select] -- select window configuration you click on.
+\\[tab-bar-list-select] -- select current line's window configuration.
+\\[tab-bar-list-delete] -- mark that window configuration to be deleted, and move down.
+\\[tab-bar-list-delete-backwards] -- mark that window configuration to be deleted, and move up.
+\\[tab-bar-list-execute] -- delete marked window configurations.
+\\[tab-bar-list-unmark] -- remove all kinds of marks from current line.
+ With prefix argument, also move up one line.
+\\[tab-bar-list-backup-unmark] -- back up a line and remove marks."
+ (setq truncate-lines t)
+ (setq buffer-read-only t))
+
+(defun tab-bar-list-current-tab (error-if-non-existent-p)
+ "Return window configuration described by this line of the list."
+ (let* ((where (save-excursion
+ (beginning-of-line)
+ (+ 2 (point) tab-bar-list-column)))
+ (tab (and (not (eobp)) (get-text-property where 'tab))))
+ (or tab
+ (if error-if-non-existent-p
+ (user-error "No window configuration on this line")
+ nil))))
+
+
+(defun tab-bar-list-next-line (&optional arg)
+ (interactive)
+ (forward-line arg)
+ (beginning-of-line)
+ (move-to-column tab-bar-list-column))
+
+(defun tab-bar-list-prev-line (&optional arg)
+ (interactive)
+ (forward-line (- arg))
+ (beginning-of-line)
+ (move-to-column tab-bar-list-column))
+
+(defun tab-bar-list-unmark (&optional backup)
+ "Cancel all requested operations on window configuration on this line and move down.
+Optional prefix arg means move up."
+ (interactive "P")
+ (beginning-of-line)
+ (move-to-column tab-bar-list-column)
+ (let* ((buffer-read-only nil))
+ (delete-char 1)
+ (insert " "))
+ (forward-line (if backup -1 1))
+ (move-to-column tab-bar-list-column))
+
+(defun tab-bar-list-backup-unmark ()
+ "Move up and cancel all requested operations on window configuration on line above."
+ (interactive)
+ (forward-line -1)
+ (tab-bar-list-unmark)
+ (forward-line -1)
+ (move-to-column tab-bar-list-column))
+
+(defun tab-bar-list-delete (&optional arg)
+ "Mark window configuration on this line to be deleted by \\<tab-bar-list-mode-map>\\[tab-bar-list-execute] command.
+Prefix arg is how many window configurations to delete.
+Negative arg means delete backwards."
+ (interactive "p")
+ (let ((buffer-read-only nil))
+ (if (or (null arg) (= arg 0))
+ (setq arg 1))
+ (while (> arg 0)
+ (delete-char 1)
+ (insert ?D)
+ (forward-line 1)
+ (setq arg (1- arg)))
+ (while (< arg 0)
+ (delete-char 1)
+ (insert ?D)
+ (forward-line -1)
+ (setq arg (1+ arg)))
+ (move-to-column tab-bar-list-column)))
+
+(defun tab-bar-list-delete-backwards (&optional arg)
+ "Mark window configuration on this line to be deleted by \\<tab-bar-list-mode-map>\\[tab-bar-list-execute] command.
+Then move up one line. Prefix arg means move that many lines."
+ (interactive "p")
+ (tab-bar-list-delete (- (or arg 1))))
+
+(defun tab-bar-list-delete-from-list (tab)
+ "Delete the window configuration from both lists."
+ (set-frame-parameter nil 'tabs (delq tab (tab-bar-tabs))))
+
+(defun tab-bar-list-execute ()
+ "Delete window configurations marked with \\<tab-bar-list-mode-map>\\[tab-bar-list-delete] commands."
+ (interactive)
+ (save-excursion
+ (goto-char (point-min))
+ (let ((buffer-read-only nil))
+ (while (re-search-forward
+ (format "^%sD" (make-string tab-bar-list-column ?\040))
+ nil t)
+ (forward-char -1)
+ (let ((tab (tab-bar-list-current-tab nil)))
+ (when tab
+ (tab-bar-list-delete-from-list tab)
+ (beginning-of-line)
+ (delete-region (point) (progn (forward-line 1) (point))))))))
+ (beginning-of-line)
+ (move-to-column tab-bar-list-column)
+ (when tab-bar-mode
+ (force-window-update)))
+
+(defun tab-bar-list-select ()
+ "Select this line's window configuration.
+This command deletes and replaces all the previously existing windows
+in the selected frame."
+ (interactive)
+ (let* ((select-tab (tab-bar-list-current-tab t)))
+ (kill-buffer (current-buffer))
+ ;; Delete the current window configuration
+ (tab-bar-close-current-tab nil select-tab)
+ ;; (tab-bar-select-tab select-tab)
+ ))
+
+(defun tab-bar-list-mouse-select (event)
+ "Select the window configuration whose line you click on."
+ (interactive "e")
+ (set-buffer (window-buffer (posn-window (event-end event))))
+ (goto-char (posn-point (event-end event)))
+ (tab-bar-list-select))
+
\f
(defvar ctl-x-6-map (make-sparse-keymap)
"Keymap for tab commands.")
(switch-to-buffer-other-tab value))))
(define-key ctl-x-6-map "2" 'tab-bar-add-tab)
+(define-key ctl-x-6-map "0" 'tab-bar-close-current-tab)
(define-key ctl-x-6-map "b" 'switch-to-buffer-other-tab)
(define-key ctl-x-6-map "f" 'find-file-other-tab)
(define-key ctl-x-6-map "\C-f" 'find-file-other-tab)
projects / emacs.git / commitdiff