A working multiple-regions implementation, with some issues.

This commit is contained in:
Magnar Sveen 2012-06-06 20:01:36 +02:00
parent b28e8f9536
commit 03dfc70db9

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@ -79,6 +79,11 @@
"The face used for additional cursors"
:group 'multiple-cursors)
(defface mc/region-face
'((t :inherit region))
"The face used for additional regions"
:group 'multiple-cursors)
(defun mc/make-cursor-overlay-at-eol (pos)
"Create overlay to look like cursor at end of line."
(let ((overlay (make-overlay pos pos nil nil t)))
@ -99,80 +104,37 @@ highlights the entire width of the window."
(mc/make-cursor-overlay-at-eol (point))
(mc/make-cursor-overlay-inline (point))))
(defun mc/make-region-overlay-between-point-and-mark ()
(let ((overlay (make-overlay (mark) (point) nil nil t)))
(overlay-put overlay 'face 'mc/region-face)
(overlay-put overlay 'type 'additional-region)
overlay))
;; TODO:
;; (set-marker MARKER nil) for performance
;; collapse cursors at same point
;; remove mark-multiple integration
;; C-g fjerner regions først, før den disabler multiple-cursors
;; refactor and add tests :-P
;; ALSO:
;; unknown:
;; (t)ry all or (i)gnore -> (did that work ok? (k)eep doing that or (d)on't)
(defun mc/add-cursor-at-point ()
"Add a fake cursor where point is.
Also makes a copy of the kill-ring to be used by this cursor."
(let ((overlay (mc/make-cursor-overlay-at-point)))
(overlay-put overlay 'type 'additional-cursor)
(overlay-put overlay 'kill-ring kill-ring)
(overlay-put overlay 'mark-ring mark-ring)
(overlay-put overlay 'mark-active mark-active)
(overlay-put overlay 'mark (set-marker (make-marker) (mark)))
(when (use-region-p)
(overlay-put overlay 'region-overlay
(mc/make-region-overlay-between-point-and-mark)))
(overlay-put overlay 'priority 100)))
(defvar mc--unsupported-cmds '()
"List of commands that does not work well with multiple cursors.
Set up with the unsupported-cmd macro.")
(defmacro unsupported-cmd (cmd)
"Adds command to list of unsupported commands and prevents it
from being executed if in multiple-cursors-mode."
`(progn
(push (quote ,cmd) mc--unsupported-cmds)
(defadvice ,cmd (around unsupported-advice activate)
"command isn't supported with multiple cursors"
(unless multiple-cursors-mode
ad-do-it))))
;; Commands that make a giant mess of multiple cursors
(unsupported-cmd yank-pop)
;; Commands that should be mirrored by all cursors
(setq mc--cmds '(self-insert-command
js2-insert-and-indent
wrap-region-trigger
sgml-slash
slime-space
previous-line
next-line
newline
yas/expand
newline-and-indent
join-line
right-char forward-char
right-word forward-word
left-char backward-char
left-word backward-word
subword-upcase upcase-word
subword-downcase downcase-word
subword-capitalize capitalize-word
forward-list
backward-list
hippie-expand hippie-expand-lines
yank yank-indented
kill-word
kill-region-or-backward-word
kill-line
kill-whole-line
backward-kill-word
backward-delete-char-untabify
delete-char c-electric-delete-forward
delete-backward-char c-electric-backspace
c-electric-paren
c-electric-semi&comma
org-shiftright
just-one-space
zap-to-char
end-of-line
js2-beginning-of-line
js2-end-of-line
js2r-inline-var
change-number-at-point
move-end-of-line
move-end-of-line-or-next-line
beginning-of-line
move-beginning-of-line
move-start-of-line-or-prev-line
dired-back-to-start-of-files
back-to-indentation))
(defun mc/execute-command-for-all-fake-cursors (cmd)
"Calls CMD interactively for each cursor.
It works by moving point to the fake cursor, setting
@ -180,18 +142,31 @@ up the proper kill-ring, and then removing the cursor.
After executing the command, it sets up a new fake
cursor with updated info."
(let ((current-kill-ring kill-ring)
(current-mark-ring mark-ring)
(current-mark-active mark-active)
(annoying-arrows-mode nil))
(save-excursion
(mapc #'(lambda (o)
(when (eq (overlay-get o 'type) 'additional-cursor)
(goto-char (overlay-start o))
(setq kill-ring (overlay-get o 'kill-ring))
(set-marker (mark-marker) (overlay-get o 'mark))
(setq mark-ring (overlay-get o 'mark-ring))
(setq mark-active (overlay-get o 'mark-active))
(delete-region-overlay o)
(delete-overlay o)
(ignore-errors
(call-interactively cmd)
(when deactivate-mark (deactivate-mark))
(mc/add-cursor-at-point))))
(overlays-in (point-min) (point-max))))
(setq kill-ring current-kill-ring)))
(setq kill-ring current-kill-ring)
(setq mark-ring current-mark-ring)
(setq mark-active current-mark-active)))
(defun delete-region-overlay (o)
(ignore-errors
(delete-overlay (overlay-get o 'region-overlay))))
(defun mc/execute-this-command-for-all-cursors ()
"Used with post-command-hook to execute supported commands for
@ -214,6 +189,7 @@ Do not use to conclude editing with multiple cursors. For that
you should disable multiple-cursors-mode."
(mapc #'(lambda (o)
(when (eq (overlay-get o 'type) 'additional-cursor)
(delete-region-overlay o)
(delete-overlay o)))
(overlays-in (point-min) (point-max))))
@ -275,16 +251,86 @@ mark-multiple if point and mark is on different columns."
"Removes mark-multiple and switches to multiple cursors instead"
(interactive)
(let ((offset (- (point) (overlay-start mm/master))))
(deactivate-mark)
(save-excursion
(dolist (mirror mm/mirrors)
(goto-char (+ offset (overlay-start mirror)))
(mc/add-cursor-at-point)))
(mm/clear-all)
(deactivate-mark)
(multiple-cursors-mode)))
(define-key mm/keymap (kbd "C-g") 'mc/switch-from-mark-multiple-to-cursors)
(defvar mc--unsupported-cmds '()
"List of commands that does not work well with multiple cursors.
Set up with the unsupported-cmd macro.")
(defmacro unsupported-cmd (cmd)
"Adds command to list of unsupported commands and prevents it
from being executed if in multiple-cursors-mode."
`(progn
(push (quote ,cmd) mc--unsupported-cmds)
(defadvice ,cmd (around unsupported-advice activate)
"command isn't supported with multiple cursors"
(unless multiple-cursors-mode
ad-do-it))))
;; Commands that make a giant mess of multiple cursors
(unsupported-cmd yank-pop)
;; Commands that should be mirrored by all cursors
(setq mc--cmds '(self-insert-command
js2-insert-and-indent
wrap-region-trigger
sgml-slash
slime-space
previous-line
next-line
newline
yas/expand
newline-and-indent
join-line
right-char forward-char
right-word forward-word
left-char backward-char
left-word backward-word
subword-upcase upcase-word
subword-downcase downcase-word
subword-capitalize capitalize-word
forward-list
backward-list
hippie-expand hippie-expand-lines
yank yank-indented
kill-word
kill-region-or-backward-word
kill-line
kill-whole-line
backward-kill-word
backward-delete-char-untabify
delete-char c-electric-delete-forward
delete-backward-char c-electric-backspace
c-electric-paren
c-electric-semi&comma
org-shiftright
just-one-space
zap-to-char
end-of-line
set-mark-command
js2-beginning-of-line
js2-end-of-line
js2r-inline-var
change-number-at-point
move-end-of-line
move-end-of-line-or-next-line
beginning-of-line
er/expand-region
er/mark-word
move-beginning-of-line
move-start-of-line-or-prev-line
dired-back-to-start-of-files
save-region-or-current-line
back-to-indentation))
(provide 'multiple-cursors)
;;; multiple-cursors.el ends here