;;; Commentary:
;;
;; The main function, `ace-window' is meant to replace `other-window'.
-;; If fact, when there are only two windows present, `other-window' is
+;; In fact, when there are only two windows present, `other-window' is
;; called. If there are more, each window will have its first
;; character highlighted. Pressing that character will switch to that
;; window.
;;
;; (setq aw-keys '(?a ?s ?d ?f ?g ?h ?j ?k ?l))
;;
-;; This way they're all on the home row, although the intuitive
+;; This way they are all on the home row, although the intuitive
;; ordering is lost.
;;
;; If you don't want the gray background that makes the red selection
;;
;; (setq aw-background nil)
;;
+;; If you want to know the selection characters ahead of time, you can
+;; turn on `ace-window-display-mode'.
+;;
;; When prefixed with one `universal-argument', instead of switching
;; to selected window, the selected window is swapped with current one.
;;
(let* ((pt (car leaf))
(wnd (cdr leaf))
(ol (make-overlay pt (1+ pt) (window-buffer wnd)))
- (old-str (with-selected-window wnd
- (buffer-substring pt (1+ pt))))
+ (old-str (or
+ (ignore-errors
+ (with-selected-window wnd
+ (buffer-substring pt (1+ pt))))
+ ""))
(new-str
(concat
(cl-case aw-leading-char-style
#'aw--remove-leading-chars))))
(aw--done)))
-(defun avi--regex-candidates (regex &optional wnd beg end)
+(defun avi--regex-candidates (regex &optional wnd beg end pred)
"Return all elements that match REGEX in WND.
-Each element of the list is ((BEG . END) . WND)."
+Each element of the list is ((BEG . END) . WND)
+When PRED is non-nil, it's a filter for matching point positions."
(setq wnd (or wnd (selected-window)))
(let ((we (or end (window-end (selected-window) t)))
candidates)
(save-excursion
(goto-char (or beg (window-start)))
(while (re-search-forward regex we t)
- (push (cons (cons (match-beginning 0)
- (match-end 0))
- wnd) candidates)))
+ (when (or (null pred)
+ (funcall pred))
+ (push (cons (cons (match-beginning 0)
+ (match-end 0))
+ wnd) candidates))))
(nreverse candidates))))
+(defvar avi--overlay-offset 0
+ "The offset to apply in `avi--overlay'.")
+
(defun avi--overlay (str pt wnd)
"Create an overlay with STR at PT in WND."
- (let ((ol (make-overlay pt (1+ pt) (window-buffer wnd)))
- (old-str (with-selected-window wnd
- (buffer-substring pt (1+ pt)))))
+ (let* ((pt (+ pt avi--overlay-offset))
+ (ol (make-overlay pt (1+ pt) (window-buffer wnd)))
+ (old-str (with-selected-window wnd
+ (buffer-substring pt (1+ pt)))))
(when avi-background
(setq old-str (propertize
old-str 'face 'aw-background-face)))
(car leaf))
(cdr leaf)))
+(defun avi--overlay-at (path leaf)
+ "Create an overlay with STR at LEAF.
+PATH is a list of keys from tree root to LEAF.
+LEAF is ((BEG . END) . WND)."
+ (let ((str (propertize
+ (string (car (last path)))
+ 'face 'avi-lead-face))
+ (pt (if (consp (car leaf))
+ (caar leaf)
+ (car leaf)))
+ (wnd (cdr leaf)))
+ (let ((ol (make-overlay pt (1+ pt)
+ (window-buffer wnd)))
+ (old-str (with-selected-window wnd
+ (buffer-substring pt (1+ pt)))))
+ (when avi-background
+ (setq old-str (propertize
+ old-str 'face 'aw-background-face)))
+ (overlay-put ol 'window wnd)
+ (overlay-put ol 'display str)
+ (push ol aw-overlays-lead))))
+
(defun avi--overlay-post (path leaf)
"Create an overlay with STR at LEAF.
PATH is a list of keys from tree root to LEAF.