You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
4.1 KiB
119 lines
4.1 KiB
;;; mc-cycle-cursors.el
|
|
|
|
;; Copyright (C) 2012-2016 Magnar Sveen
|
|
|
|
;; Author: Magnar Sveen <magnars@gmail.com>
|
|
;; Keywords: editing cursors
|
|
|
|
;; This program 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.
|
|
|
|
;; 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.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; This scrolls the buffer to center each cursor in turn.
|
|
;; Scroll down with C-v, scroll up with M-v
|
|
;; This is nice when you have cursors that's outside of your view.
|
|
|
|
;;; Code:
|
|
|
|
(require 'multiple-cursors-core)
|
|
|
|
(defun mc/next-fake-cursor-after-point ()
|
|
(let ((pos (point))
|
|
(next-pos (1+ (point-max)))
|
|
next)
|
|
(mc/for-each-fake-cursor
|
|
(let ((cursor-pos (overlay-get cursor 'point)))
|
|
(when (and (< pos cursor-pos)
|
|
(< cursor-pos next-pos))
|
|
(setq next-pos cursor-pos)
|
|
(setq next cursor))))
|
|
next))
|
|
|
|
(defun mc/prev-fake-cursor-before-point ()
|
|
(let ((pos (point))
|
|
(prev-pos (1- (point-min)))
|
|
prev)
|
|
(mc/for-each-fake-cursor
|
|
(let ((cursor-pos (overlay-get cursor 'point)))
|
|
(when (and (> pos cursor-pos)
|
|
(> cursor-pos prev-pos))
|
|
(setq prev-pos cursor-pos)
|
|
(setq prev cursor))))
|
|
prev))
|
|
|
|
(defcustom mc/cycle-looping-behaviour 'continue
|
|
"What to do if asked to cycle beyond the last cursor or before the first cursor."
|
|
:type '(radio (const :tag "Loop around to beginning/end of document." continue)
|
|
(const :tag "Warn and then loop around." warn)
|
|
(const :tag "Signal an error." error)
|
|
(const :tag "Don't loop." stop))
|
|
:group 'multiple-cursors)
|
|
|
|
(defun mc/handle-loop-condition (error-message)
|
|
(cl-ecase mc/cycle-looping-behaviour
|
|
(error (error error-message))
|
|
(warn (message error-message))
|
|
(continue 'continue)
|
|
(stop 'stop)))
|
|
|
|
(defun mc/first-fake-cursor-after (point)
|
|
"Very similar to mc/furthest-cursor-before-point, but ignores (mark) and (point)."
|
|
(let* ((cursors (mc/all-fake-cursors))
|
|
(cursors-after-point (cl-remove-if (lambda (cursor)
|
|
(< (mc/cursor-beg cursor) point))
|
|
cursors))
|
|
(cursors-in-order (cl-sort cursors-after-point '< :key 'mc/cursor-beg)))
|
|
(car cursors-in-order)))
|
|
|
|
(defun mc/last-fake-cursor-before (point)
|
|
"Very similar to mc/furthest-cursor-before-point, but ignores (mark) and (point)."
|
|
(let* ((cursors (mc/all-fake-cursors))
|
|
(cursors-before-point (cl-remove-if (lambda (cursor)
|
|
(> (mc/cursor-end cursor) point))
|
|
cursors))
|
|
(cursors-in-order (cl-sort cursors-before-point '> :key 'mc/cursor-end)))
|
|
(car cursors-in-order)))
|
|
|
|
(cl-defun mc/cycle (next-cursor fallback-cursor loop-message)
|
|
(when (null next-cursor)
|
|
(when (eql 'stop (mc/handle-loop-condition loop-message))
|
|
(return-from mc/cycle nil))
|
|
(setf next-cursor fallback-cursor))
|
|
(mc/create-fake-cursor-at-point)
|
|
(mc/pop-state-from-overlay next-cursor)
|
|
(recenter))
|
|
|
|
(defun mc/cycle-forward ()
|
|
(interactive)
|
|
(mc/cycle (mc/next-fake-cursor-after-point)
|
|
(mc/first-fake-cursor-after (point-min))
|
|
"We're already at the last cursor."))
|
|
|
|
(defun mc/cycle-backward ()
|
|
(interactive)
|
|
(mc/cycle (mc/prev-fake-cursor-before-point)
|
|
(mc/last-fake-cursor-before (point-max))
|
|
"We're already at the last cursor"))
|
|
|
|
(define-key mc/keymap (kbd "C-v") 'mc/cycle-forward)
|
|
(define-key mc/keymap (kbd "M-v") 'mc/cycle-backward)
|
|
|
|
(provide 'mc-cycle-cursors)
|
|
|
|
|
|
;; Local Variables:
|
|
;; coding: utf-8
|
|
;; End:
|
|
|
|
;;; mc-cycle-cursors.el ends here
|