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1 ;;; viper-mous.el --- mouse support for Viper
3 ;; Copyright (C) 1994, 1995 Free Software Foundation, Inc.
5 ;; This file is part of GNU Emacs.
7 ;; GNU Emacs is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 2, or (at your option)
10 ;; any later version.
12 ;; GNU Emacs is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GNU Emacs; see the file COPYING. If not, write to the
19 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 ;; Boston, MA 02111-1307, USA.
24 \f
25 ;;; Variables
27 ;; Variable used for catching the switch-frame event.
28 ;; If non-nil, indicates that previous-frame should be the selected
29 ;; one. Used by vip-mouse-click-get-word. Not a user option.
32 ;; Frame that was selected before the switch-frame event.
36 "*Function that determines what constitutes a word for clicking events.
37 Takes two parameters: a COUNT, indicating how many words to return,
38 and CLICK-COUNT, telling whether this is the first click, a double-click,
41 ;; time interval in millisecond within which successive clicks are
42 ;; considered related
44 mouse-track-multi-click-time
45 double-click-time)
46 "*Time interval in millisecond within which successive clicks are
49 ;; current event click count; XEmacs only
51 ;; time stamp of the last click event; XEmacs only
54 ;; Local variable used to toggle wraparound search on click.
57 ;; Local variable used to delimit search after wraparound.
60 ;; remembers prefix argument to pass along to commands invoked by second
61 ;; click.
62 ;; This is needed because in Emacs (not XEmacs), assigning to preix-arg
63 ;; causes Emacs to count the second click as if it was a single click
67 \f
68 ;;; Code
73 ;; Returns window where click occurs
79 ;; Returns window where click occurs
83 ;; Returns the buffer of the window where click occurs
87 ;; Returns the name of the buffer in the window where click occurs
91 ;; Returns position of a click
99 "Returns word surrounding point according to a heuristic.
100 COUNT indicates how many regions to return.
101 If CLICK-COUNT is 1, `word' is a word in Vi sense.
102 If CLICK-COUNT is 2,then `word' is a Word in Vi sense.
103 If the character clicked on is a non-separator and is non-alphanumeric but
104 is adjacent to an alphanumeric symbol, then it is considered alphanumeric
105 for the purpose of this command. If this character has a matching
106 character, such as `\(' is a match for `\)', then the matching character is
107 also considered alphanumeric.
108 For convenience, in Lisp modes, `-' is considered alphanumeric.
110 If CLICK-COUNT is 3 or more, returns the line clicked on with leading and
111 trailing space and tabs removed. In that case, the first argument, COUNT,
112 is ignored."
114 beg skip-flag result
115 word-beg)
140 ))
142 ;; Add `-' to alphanum, if it wasn't added and if we are in Lisp
171 ;; XEmacs doesn't have set-text-properties, but there buffer-substring
172 ;; doesn't return properties together with the string, so it's not needed.
175 result
176 ))
180 "Returns word surrounding the position of a mouse click.
181 Click may be in another window. Current window and buffer isn't changed.
182 On single or double click, returns the word as determined by
183 `vip-surrounding-word-function'."
201 click-word))))
205 "Insert word clicked or double-clicked on.
206 With prefix argument, N, insert that many words.
207 This command must be bound to a mouse click.
208 The double-click action of the same mouse button must not be bound
209 \(or it must be bound to the same function\).
210 See `vip-surrounding-word' for the definition of a word in this case."
215 ;; turn arg into a number
217 ;; prefix arg is a list when one hits C-u then command
225 ;; This trick checks if there is a pending mouse event
226 ;; if so, we use this latter event and discard the current mouse click
227 ;; If the next pending event is not a mouse event, we execute
228 ;; the current mouse event
234 ;; count this click for XEmacs
236 ;; uninterrupted wait or the interrupting event wasn't a mouse event
240 vip-global-prefix-argument nil))
246 )))
248 ;; arg is an event. accepts symbols and numbers, too
254 ;; XEmacs has no double-click events. So, we must simulate.
255 ;; So, we have to simulate event-click-count.
259 ;; if more than 1 second
261 vip-multiclick-timeout)
270 "Find the word clicked or double-clicked on. Word may be in another window.
271 With prefix argument, N, search for N-th occurrence.
272 This command must be bound to a mouse click. The double-click action of the
273 same button must not be bound \(or it must be bound to the same function\).
274 See `vip-surrounding-word' for the details on what constitutes a word for
275 this command."
284 ;; This trick checks if there is a pending mouse event
285 ;; if so, we use this latter event and discard the current mouse click
286 ;; If the next pending event is not a mouse event, we execute
287 ;; the current mouse event
294 ;; remember command that was before the multiclick
296 ;; make sure we counted this event---needed for XEmacs only
298 ;; uninterrupted wait
304 vip-global-prefix-argument nil))
315 vip-local-search-start-marker vip-search-start-marker
316 vip-mouse-click-search-noerror t
317 vip-mouse-click-search-limit nil)
319 ;; make search string known to Viper
322 click-word))
326 ))
334 vip-mouse-click-search-noerror))
347 vip-mouse-click-search-limit nil)))
352 )
359 "`%s': Last occurrence in %s. Back to beginning of search"
369 )))
372 "Catch the event of switching frame.
373 Usually is bound to a 'down-mouse' event to work properly. See sample
374 bindings in viper.el and in the Viper manual."
377 ;; pass prefix arg along to vip-mouse-click-search/insert-word
381 ;; make Emacs forget that it executed vip-mouse-catch-frame-switch
384 ;; Called just before switching frames. Saves the old selected frame.
385 ;; Sets last-command to handle-switch-frame (this is done automatically in
386 ;; Emacs.
387 ;; The semantics of switching frames is different in Emacs and XEmacs.
388 ;; In Emacs, if you select-frame A while mouse is over frame B and then
389 ;; start typing, input goes to frame B, which becomes selected.
390 ;; In XEmacs, input will go to frame A. This may be a bug in one of the
391 ;; Emacsen, but also may be a design decision.
392 ;; Also, in Emacs sending input to frame B generates handle-switch-frame
393 ;; event, while in XEmacs it doesn't.
394 ;; All this accounts for the difference in the behavior of
395 ;; vip-mouse-click-* commands when you click in a frame other than the one
396 ;; that was the last to receive input. In Emacs, focus will be in frame A
397 ;; until you do something other than vip-mouse-click-* command.
398 ;; In XEmacs, you have to manually select frame B (with the mouse click) in
399 ;; order to shift focus to frame B.
418 )
425 ;; The following would be needed if you want to use the above two
426 ;; while clicking in another frame. If you only want to use them
427 ;; by clicking in another window, not frame, the bindings below
428 ;; aren't necessary.
430 ;; These must be bound to mouse-down event for the same mouse
431 ;; buttons as 'vip-mouse-click-search-word and
432 ;; 'vip-mouse-click-insert-word
442 "Remember the selected frame before the switch-frame event."
444 )))
450 ;;; viper-mous.el ends here