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1 ;;; viper-mous.el --- mouse support for Viper
3 ;; Copyright (C) 1994, 95, 96, 97, 2001, 02 Free Software Foundation, Inc.
5 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
12 ;; any later version.
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
24 ;;; Commentary:
26 ;;; Code:
30 ;; compiler pacifier
39 ;; loading happens only in non-interactive compilation
40 ;; in order to spare non-viperized emacs from being viperized
48 )))
49 ;; end pacifier
55 "Support for Viper special mouse-bound commands"
59 \f
60 ;;; Variables
62 ;; Variable used for catching the switch-frame event.
63 ;; If non-nil, indicates that previous-frame should be the selected
64 ;; one. Used by viper-mouse-click-get-word. Not a user option.
67 ;; Frame that was selected before the switch-frame event.
71 "*Function that determines what constitutes a word for clicking events.
72 Takes two parameters: a COUNT, indicating how many words to return,
73 and CLICK-COUNT, telling whether this is the first click, a double-click,
74 or a tripple-click."
78 ;; time interval in millisecond within which successive clicks are
79 ;; considered related
82 mouse-track-multi-click-time
83 double-click-time)
85 "*Time interval in millisecond within which successive mouse clicks are
86 considered related."
90 ;; current event click count; XEmacs only
92 ;; time stamp of the last click event; XEmacs only
95 ;; Local variable used to toggle wraparound search on click.
98 ;; Local variable used to delimit search after wraparound.
101 ;; remembers prefix argument to pass along to commands invoked by second
102 ;; click.
103 ;; This is needed because in Emacs (not XEmacs), assigning to preix-arg
104 ;; causes Emacs to count the second click as if it was a single click
108 ;; same keys, but parsed
116 \f
117 ;;; Code
122 ;; Returns window where click occurs
127 )))
129 win
132 ;; Returns window where click occurs
136 ;; Returns the buffer of the window where click occurs
140 ;; Returns the name of the buffer in the window where click occurs
144 ;; Returns position of a click
149 ))
153 "Returns word surrounding point according to a heuristic.
154 COUNT indicates how many regions to return.
155 If CLICK-COUNT is 1, `word' is a word in Vi sense.
156 If CLICK-COUNT is 2,then `word' is a Word in Vi sense.
157 If the character clicked on is a non-separator and is non-alphanumeric but
158 is adjacent to an alphanumeric symbol, then it is considered alphanumeric
159 for the purpose of this command. If this character has a matching
160 character, such as `\(' is a match for `\)', then the matching character is
161 also considered alphanumeric.
162 For convenience, in Lisp modes, `-' is considered alphanumeric.
164 If CLICK-COUNT is 3 or more, returns the line clicked on with leading and
165 trailing space and tabs removed. In that case, the first argument, COUNT,
166 is ignored."
168 beg skip-flag result
169 word-beg)
195 )
196 ))
198 ;; Add `-' to alphanum, if it wasn't added and if we are in Lisp
227 ;; XEmacs doesn't have set-text-properties, but there buffer-substring
228 ;; doesn't return properties together with the string, so it's not needed.
231 result
232 ))
236 "Returns word surrounding the position of a mouse click.
237 Click may be in another window. Current window and buffer isn't changed.
238 On single or double click, returns the word as determined by
239 `viper-surrounding-word-function'."
257 click-word))))
261 "Insert word clicked or double-clicked on.
262 With prefix argument, N, insert that many words.
263 This command must be bound to a mouse click.
264 The double-click action of the same mouse button must not be bound
265 \(or it must be bound to the same function\).
266 See `viper-surrounding-word' for the definition of a word in this case."
277 ;; turn arg into a number
279 ;; prefix arg is a list when one hits C-u then command
290 ;; This trick checks if there is a pending mouse event if so, we
291 ;; use this latter event and discard the current mouse click If
292 ;; the next pending event is not a mouse event, we execute the
293 ;; current mouse event
299 ;; count this click for XEmacs
301 ;; uninterrupted wait or the interrupting event wasn't a mouse event
305 viper-global-prefix-argument nil))
311 )))))
313 ;; Arg is an event. Accepts symbols and numbers, too
319 ;; XEmacs has no double-click events. So, we must simulate.
320 ;; So, we have to simulate event-click-count.
325 ))
327 ;; kind of semaphore for updating viper-current-click-count
332 viper-last-click-event-timestamp))
333 inhibit-quit)
344 viper-current-click-count
346 ))
347 nil ; emacs
348 )
352 "Find the word clicked or double-clicked on. Word may be in another window.
353 With prefix argument, N, search for N-th occurrence.
354 This command must be bound to a mouse click. The double-click action of the
355 same button must not be bound \(or it must be bound to the same function\).
356 See `viper-surrounding-word' for the details on what constitutes a word for
357 this command."
369 click-word click-count)
373 ;; This trick checks if there is a pending mouse event if so, we use
374 ;; this latter event and discard the current mouse click If the next
375 ;; pending event is not a mouse event, we execute the current mouse
376 ;; event
382 arg)
383 ;; remember command that was before the multiclick
384 this-command last-command)
385 ;; make sure we counted this event---needed for XEmacs only
387 ;; uninterrupted wait
393 viper-global-prefix-argument nil))
404 viper-local-search-start-marker viper-search-start-marker
405 viper-mouse-click-search-noerror t
406 viper-mouse-click-search-limit nil)
408 ;; make search string known to Viper
411 click-word))
415 ))
423 click-word viper-mouse-click-search-limit
424 viper-mouse-click-search-noerror))
437 viper-mouse-click-search-limit nil)))
444 )
451 "`%s': Last occurrence in %s. Back to beginning of search"
461 ))))
464 "Catch the event of switching frame.
465 Usually is bound to a `down-mouse' event to work properly. See sample
466 bindings in the Viper manual."
469 ;; pass prefix arg along to viper-mouse-click-search/insert-word
473 ;; make Emacs forget that it executed viper-mouse-catch-frame-switch
476 ;; Called just before switching frames. Saves the old selected frame.
477 ;; Sets last-command to handle-switch-frame (this is done automatically in
478 ;; Emacs.
479 ;; The semantics of switching frames is different in Emacs and XEmacs.
480 ;; In Emacs, if you select-frame A while mouse is over frame B and then
481 ;; start typing, input goes to frame B, which becomes selected.
482 ;; In XEmacs, input will go to frame A. This may be a bug in one of the
483 ;; Emacsen, but also may be a design decision.
484 ;; Also, in Emacs sending input to frame B generates handle-switch-frame
485 ;; event, while in XEmacs it doesn't.
486 ;; All this accounts for the difference in the behavior of
487 ;; viper-mouse-click-* commands when you click in a frame other than the one
488 ;; that was the last to receive input. In Emacs, focus will be in frame A
489 ;; until you do something other than viper-mouse-click-* command.
490 ;; In XEmacs, you have to manually select frame B (with the mouse click) in
491 ;; order to shift focus to frame B.
497 ;; The key is of the form (MODIFIER ... BUTTON-NUMBER)
498 ;; Converts into a valid mouse button spec for the appropriate version of
499 ;; Emacs. EVENT-TYPE is either `up' or `down'. Up returns button-up key; down
500 ;; returns button-down key.
503 button-spec meta-spec shift-spec control-spec key-spec)
505 ;; just return nil
506 ()
528 meta-spec
532 shift-spec
536 control-spec
545 control-spec meta-spec shift-spec button-spec)))
548 nil
550 control-spec meta-spec shift-spec button-spec)))))
551 )))
559 viper-mouse-down-search-key-parsed nil))
567 viper-mouse-down-insert-key-parsed nil))
569 ;; If FORCE, bind even if this mouse action is already bound to something else
573 viper-mouse-down-search-key-parsed
583 "%S already bound to a mouse event. Viper mouse-search feature disabled"
584 viper-mouse-up-search-key-parsed))
590 "%S already bound to a mouse event. Viper mouse-search feature disabled"
591 viper-mouse-down-search-key-parsed))
598 ;; If FORCE, bind even if this mouse action is already bound to something else
602 viper-mouse-down-insert-key-parsed
612 "%S already bound to a mouse event. Viper mouse-insert feature disabled"
613 viper-mouse-up-insert-key-parsed))
619 "%S already bound to a mouse event. Viper mouse-insert feature disabled"
620 viper-mouse-down-insert-key-parsed))
639 "*Key used to click-search in Viper.
640 This must be a list that specifies the mouse button and modifiers.
641 The supported modifiers are `meta', `shift', and `control'.
642 For instance, `(meta shift 1)' means that holding the meta and shift
643 keys down and clicking on a word with mouse button 1
644 will search for that word in the buffer that was current before the click.
645 This buffer may be different from the one where the click occurred."
655 "*Key used to click-insert in Viper.
656 Must be a list that specifies the mouse button and modifiers.
657 The supported modifiers are `meta', `shift', and `control'.
658 For instance, `(meta shift 2)' means that holding the meta and shift keys
659 down, and clicking on a word with mouse button 2, will insert that word
660 at the cursor in the buffer that was current just before the click.
661 This buffer may be different from the one where the click occurred."
672 ;;; Local Variables:
673 ;;; eval: (put 'viper-deflocalvar 'lisp-indent-hook 'defun)
674 ;;; End:
677 ;;; arch-tag: e56b2390-06c4-4dd1-96f5-c7876e2d8c2f
678 ;;; viper-mous.el ends here