Annotation of GNUtools/emacs/lisp/sun-fns.el, revision 1.1.1.1

1.1       root        1: ;; Subroutines of Mouse handling for Sun windows
                      2: ;; Copyright (C) 1987, 1991, 1992 Free Software Foundation, Inc.
                      3: 
                      4: ;; This file is part of GNU Emacs.
                      5: 
                      6: ;; GNU Emacs is free software; you can redistribute it and/or modify
                      7: ;; it under the terms of the GNU General Public License as published by
                      8: ;; the Free Software Foundation; either version 1, or (at your option)
                      9: ;; any later version.
                     10: 
                     11: ;; GNU Emacs is distributed in the hope that it will be useful,
                     12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
                     13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     14: ;; GNU General Public License for more details.
                     15: 
                     16: ;; You should have received a copy of the GNU General Public License
                     17: ;; along with GNU Emacs; see the file COPYING.  If not, write to
                     18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
                     19: 
                     20: ;;; Upgrade   Apr, 1992, Jeff Peck
                     21: ;;; modeline-menu
                     22: ;;; modeline resize
                     23: ;;; mouse-fill-paragraph(s)
                     24: ;;; mouse in Buffer-menu
                     25: ;;;
                     26: ;;; Fix       Aug, 1989, Jeff Peck
                     27: ;;; minibuf-prompt-length 
                     28: ;;;
                     29: ;;; Submitted Mar. 1987, Jeff Peck
                     30: ;;;                     Sun Microsystems Inc. <[email protected]>
                     31: ;;; Conceived Nov. 1986, Stan Jefferson,
                     32: ;;;                      Computer Science Lab, SRI International.
                     33: ;;; GoodIdeas Feb. 1987, Steve Greenbaum
                     34: ;;; & UpClicks           Reasoning Systems, Inc.
                     35: ;;;
                     36: (provide 'sun-fns)
                     37: (require 'sun-mouse)
                     38: ;;;
                     39: ;;; Functions for manipulating via the mouse and mouse-map definitions
                     40: ;;; for accessing them.  Also definitons of mouse menus.
                     41: ;;; This file you should freely modify to reflect you personal tastes.
                     42: ;;;
                     43: ;;; First half of file defines functions to implement mouse commands,
                     44: ;;; Don't delete any of those, just add what ever else you need.
                     45: ;;; Second half of file defines mouse bindings, do whatever you want there.
                     46: 
                     47: ;;;
                     48: ;;;         Mouse Functions.
                     49: ;;;
                     50: ;;; These functions follow the sun-mouse-handler convention of being called
                     51: ;;; with three arguements: (window x-pos y-pos)
                     52: ;;; This makes it easy for a mouse executed command to know where the mouse is.
                     53: ;;; Use the macro "eval-in-window" to execute a function 
                     54: ;;; in a temporarily selected window.
                     55: ;;;
                     56: ;;; If you have a function that must be called with other arguments
                     57: ;;; bind the mouse button to an s-exp that contains the necessary parameters.
                     58: ;;; See "minibuffer" bindings for examples.
                     59: ;;;
                     60: (defconst cursor-pause-milliseconds 300
                     61:   "*Number of milliseconds to display alternate cursor (usually the mark)")
                     62: 
                     63: (defun indicate-region (&optional pause)
                     64:   "Bounce cursor to mark for cursor-pause-milliseconds and back again"
                     65:   (or pause (setq pause cursor-pause-milliseconds))
                     66:   (let ((point (point)))
                     67:     (goto-char (mark))
                     68:     (sit-for-millisecs pause)
                     69:     ;(update-display)
                     70:     ;(sleep-for-millisecs pause)
                     71:     (goto-char point)))
                     72: 
                     73: 
                     74: ;;;
                     75: ;;; Text buffer operations
                     76: ;;;
                     77: (defun mouse-move-point (window x y)
                     78:   "Move point to mouse cursor."
                     79:   (select-window window)
                     80:   (move-to-loc x y)
                     81:   (if (memq last-command       ; support the mouse-copy/delete/yank
                     82:            '(mouse-copy mouse-delete mouse-yank-move))
                     83:       (setq this-command 'mouse-yank-move))
                     84:   )
                     85: 
                     86: (defun mouse-set-mark (window x y)
                     87:   "Set mark at mouse cursor."
                     88:   (eval-in-window window       ;; use this to get the unwind protect
                     89:     (let ((point (point)))
                     90:       (move-to-loc x y)
                     91:       (set-mark (point))
                     92:       (goto-char point)
                     93:       (indicate-region)))
                     94:   )
                     95: 
                     96: (defun mouse-set-mark-and-select (window x y)
                     97:   "Set mark at mouse cursor, and select that window."
                     98:   (select-window window)
                     99:   (mouse-set-mark window x y)
                    100:   )
                    101: 
                    102: (defun mouse-set-mark-and-stuff (w x y)
                    103:   "Set mark at mouse cursor, and put region in stuff buffer."
                    104:   (mouse-set-mark-and-select w x y)
                    105:   (sun-select-region (region-beginning) (region-end)))
                    106: 
                    107: ;;;
                    108: ;;; Simple mouse dragging stuff: marking with button up
                    109: ;;;
                    110: 
                    111: (defvar *mouse-drag-window* nil)
                    112: (defvar *mouse-drag-x* -1)
                    113: (defvar *mouse-drag-y* -1)
                    114: 
                    115: (defun mouse-drag-move-point (window x y)
                    116:   "Move point to mouse cursor, and allow dragging."
                    117:   (mouse-move-point window x y)
                    118:   (setq *mouse-drag-window* window
                    119:        *mouse-drag-x* x
                    120:        *mouse-drag-y* y))
                    121: 
                    122: (defun mouse-drag-set-mark-stuff (window x y)
                    123:   "The up click handler that goes with mouse-drag-move-point.
                    124: If mouse is in same WINDOW but at different X or Y than when
                    125: mouse-drag-move-point was last executed, set the mark at mouse
                    126: and put the region in the stuff buffer."
                    127:   (if (and (eq *mouse-drag-window* window)
                    128:           (not (and (equal *mouse-drag-x* x)
                    129:                     (equal *mouse-drag-y* y))))
                    130:       (mouse-set-mark-and-stuff window x y)
                    131:     (setq this-command last-command))  ; this was just an upclick no-op.
                    132:   )
                    133: 
                    134: (defun mouse-select-or-drag-move-point (window x y)
                    135:   "Select window if not selected, otherwise do mouse-drag-move-point."
                    136:   (if (eq (selected-window) window)
                    137:       (mouse-drag-move-point window x y)
                    138:     (mouse-select-window window x y)))
                    139: 
                    140: ;;;
                    141: ;;; esoteria:
                    142: ;;;
                    143: (defun mouse-exch-pt-and-mark (window x y)
                    144:   "Exchange point and mark."
                    145:   (select-window window)
                    146:   (exchange-point-and-mark)
                    147:   )
                    148: 
                    149: (defun mouse-call-kbd-macro (window x y)
                    150:   "Invokes last keyboard macro at mouse cursor."
                    151:   (mouse-move-point window x y)
                    152:   (call-last-kbd-macro)
                    153:   )
                    154: 
                    155: (defun mouse-mark-thing (window x y)
                    156:   "Set point and mark to text object using syntax table.
                    157: The resulting region is put in the sun-window stuff buffer.
                    158: Left or right Paren syntax marks an s-expression.  
                    159: Clicking at the end of a line marks the line including a trailing newline.  
                    160: If it doesn't recognize one of these it marks the character at point."
                    161:   (mouse-move-point window x y)
                    162:   (if (eobp) (open-line 1))
                    163:   (let* ((char (char-after (point)))
                    164:          (syntax (char-syntax char)))
                    165:     (cond
                    166:      ((eq syntax ?w)                   ; word.
                    167:       (forward-word 1)
                    168:       (set-mark (point))
                    169:       (forward-word -1))
                    170:      ;; try to include a single following whitespace (is this a good idea?)
                    171:      ;; No, not a good idea since inconsistent.
                    172:      ;;(if (eq (char-syntax (char-after (mark))) ?\ )
                    173:      ;;    (set-mark (1+ (mark))))
                    174:      ((eq syntax ?\( )                 ; open paren.
                    175:       (mark-sexp 1))
                    176:      ((eq syntax ?\) )                 ; close paren.
                    177:       (forward-char 1)
                    178:       (mark-sexp -1)
                    179:       (exchange-point-and-mark))
                    180:      ((eolp)                           ; mark line if at end.
                    181:       (set-mark (1+ (point)))
                    182:       (beginning-of-line 1))
                    183:      (t                                        ; mark character
                    184:       (set-mark (1+ (point)))))
                    185:     (indicate-region))                 ; display region boundary.
                    186:   (sun-select-region (region-beginning) (region-end))
                    187:   )
                    188: 
                    189: (defun mouse-kill-thing (window x y)
                    190:   "Kill thing at mouse, and put point there."
                    191:   (mouse-mark-thing window x y)
                    192:   (kill-region-and-unmark (region-beginning) (region-end))
                    193:   )
                    194: 
                    195: (defun mouse-kill-thing-there (window x y)
                    196:   "Kill thing at mouse, leave point where it was.
                    197: See mouse-mark-thing for a description of the objects recognized."
                    198:   (eval-in-window window 
                    199:     (save-excursion
                    200:       (mouse-mark-thing window x y)
                    201:       (kill-region (region-beginning) (region-end))))
                    202:   )
                    203: 
                    204: (defun mouse-save-thing (window x y &optional quiet)
                    205:   "Put thing at mouse in kill ring.
                    206: See mouse-mark-thing for a description of the objects recognized."
                    207:   (mouse-mark-thing window x y)
                    208:   (copy-region-as-kill (region-beginning) (region-end))
                    209:   (if (not quiet) (message "Thing saved"))
                    210:   )
                    211: 
                    212: (defun mouse-save-thing-there (window x y &optional quiet)
                    213:   "Put thing at mouse in kill ring, leave point as is.
                    214: See mouse-mark-thing for a description of the objects recognized."
                    215:   (eval-in-window window
                    216:     (save-excursion
                    217:       (mouse-save-thing window x y quiet))))
                    218: 
                    219: ;;;
                    220: ;;; Mouse yanking...
                    221: ;;;
                    222: (defun mouse-copy-thing (window x y)
                    223:   "Put thing at mouse in kill ring, yank to point.
                    224: See mouse-mark-thing for a description of the objects recognized."
                    225:   (setq last-command 'not-kill)         ;Avoids appending to previous kills.
                    226:   (mouse-save-thing-there window x y t)
                    227:   (yank)
                    228:   (setq this-command 'yank))
                    229: 
                    230: (defun mouse-move-thing (window x y)
                    231:   "Kill thing at mouse, yank it to point.
                    232: See mouse-mark-thing for a description of the objects recognized."
                    233:   (setq last-command 'not-kill)         ;Avoids appending to previous kills.
                    234:   (mouse-kill-thing-there window x y)
                    235:   (yank)
                    236:   (setq this-command 'yank))
                    237: 
                    238: (defun mouse-yank-at-point (&optional window x y)
                    239:   "Yank from kill-ring at point; then cycle thru kill ring."
                    240:   (if (eq last-command 'yank)
                    241:       (let ((before (< (point) (mark))))
                    242:        (delete-region (point) (mark))
                    243:        (rotate-yank-pointer 1)
                    244:        (insert (car kill-ring-yank-pointer))
                    245:        (if before (exchange-point-and-mark)))
                    246:     (yank))
                    247:   (setq this-command 'yank))
                    248: 
                    249: (defun mouse-yank-at-mouse (window x y)
                    250:   "Yank from kill-ring at mouse; then cycle thru kill ring."
                    251:   (mouse-move-point window x y)
                    252:   (mouse-yank-at-point window x y))
                    253: 
                    254: (defun mouse-save/delete/yank (&optional window x y)
                    255:   "Context sensitive save/delete/yank.
                    256: Consecutive clicks perform as follows:
                    257:     * first click saves region to kill ring,
                    258:     * second click kills region,
                    259:     * third click yanks from kill ring,
                    260:     * subsequent clicks cycle thru kill ring.
                    261: If mouse-move-point is performed after the first or second click,
                    262: the next click will do a yank, etc.  Except for a possible mouse-move-point,
                    263: this command is insensitive to mouse location."
                    264:   (cond
                    265:    ((memq last-command '(mouse-delete yank mouse-yank-move))   ; third+ click
                    266:     (mouse-yank-at-point))
                    267:    ((eq last-command 'mouse-copy)      ; second click
                    268:     (kill-region (region-beginning) (region-end))
                    269:     (setq this-command 'mouse-delete))
                    270:    (t                                  ; first click
                    271:     (copy-region-as-kill (region-beginning) (region-end))
                    272:     (message "Region saved")
                    273:     (setq this-command 'mouse-copy))
                    274:    ))
                    275: 
                    276: 
                    277: (defun mouse-split-horizontally (window x y)
                    278:   "Splits the window horizontally at mouse cursor."
                    279:   (eval-in-window window (split-window-horizontally (1+ x))))
                    280: 
                    281: (defun mouse-split-vertically (window x y)
                    282:   "Split the window vertically at the mouse cursor."
                    283:   (eval-in-window window (split-window-vertically (1+ y))))
                    284: 
                    285: (defun mouse-select-window (window x y)
                    286:   "Selects the window, restoring point."
                    287:   (select-window window))
                    288: 
                    289: (defun mouse-delete-other-windows (window x y)
                    290:   "Deletes all windows except the one mouse is in."
                    291:   (delete-other-windows window))
                    292: 
                    293: (defun mouse-delete-window (window x y)
                    294:   "Deletes the window mouse is in."
                    295:   (delete-window window))
                    296: 
                    297: (defun mouse-undo (window x y)
                    298:   "Invokes undo in the window mouse is in."
                    299:   (eval-in-window window (undo)))
                    300: 
                    301: ;;;
                    302: ;;; Scroll operations
                    303: ;;;
                    304: 
                    305: ;;; The move-to-window-line is used below because otherwise
                    306: ;;; scrolling a non-selected process window with the mouse, after
                    307: ;;; the process has written text past the bottom of the window,
                    308: ;;; gives an "End of buffer" error, and then scrolls.  The
                    309: ;;; move-to-window-line seems to force recomputing where things are.
                    310: (defun mouse-scroll-up (window x y)
                    311:   "Scrolls the window upward."
                    312:   (eval-in-window window (move-to-window-line 1) (scroll-up nil)))
                    313: 
                    314: (defun mouse-scroll-down (window x y)
                    315:   "Scrolls the window downward."
                    316:   (eval-in-window window (scroll-down nil)))
                    317: 
                    318: (defun mouse-scroll-proportional (window x y)
                    319:   "Scrolls the window proportionally corresponding to window
                    320: relative X divided by window width."
                    321:   (eval-in-window window 
                    322:     (if (>= x (1- (window-width)))
                    323:        ;; When x is maximun (equal to or 1 less than window width),
                    324:        ;; goto end of buffer.  We check for this special case
                    325:        ;; becuase the calculated goto-char often goes short of the
                    326:        ;; end due to roundoff error, and we often really want to go
                    327:        ;; to the end.
                    328:        (goto-char (point-max))
                    329:       (progn
                    330:        (goto-char (+ (point-min)       ; For narrowed regions.
                    331:                      (* x (/ (- (point-max) (point-min))
                    332:                              (1- (window-width))))))
                    333:        (beginning-of-line))
                    334:       )
                    335:     (what-cursor-position)             ; Report position.
                    336:     ))
                    337: 
                    338: (defun mouse-line-to-top (window x y)
                    339:   "Scrolls the line at the mouse cursor up to the top."
                    340:   (eval-in-window window (scroll-up y)))
                    341: 
                    342: (defun mouse-top-to-line (window x y)
                    343:   "Scrolls the top line down to the mouse cursor."
                    344:   (eval-in-window window (scroll-down y)))
                    345: 
                    346: (defun mouse-line-to-bottom (window x y)
                    347:   "Scrolls the line at the mouse cursor to the bottom."
                    348:   (eval-in-window window (scroll-up (+ y (- 2 (window-height))))))
                    349: 
                    350: (defun mouse-bottom-to-line (window x y)
                    351:   "Scrolls the bottom line up to the mouse cursor."
                    352:   (eval-in-window window (scroll-down (+ y (- 2 (window-height))))))
                    353: 
                    354: (defun mouse-line-to-middle (window x y)
                    355:   "Scrolls the line at the mouse cursor to the middle."
                    356:   (eval-in-window window (scroll-up (- y -1 (/ (window-height) 2)))))
                    357: 
                    358: (defun mouse-middle-to-line (window x y)
                    359:   "Scrolls the line at the middle to the mouse cursor."
                    360:   (eval-in-window window (scroll-up (- (/ (window-height) 2) y 1))))
                    361: 
                    362: 
                    363: ;;;
                    364: ;;; main emacs menu.
                    365: ;;;
                    366: (defmenu expand-menu
                    367:   ("Vertically" mouse-expand-vertically *menu-window*)
                    368:   ("Horizontally" mouse-expand-horizontally *menu-window*))
                    369: 
                    370: (defmenu delete-window-menu
                    371:   ("This One" delete-window *menu-window*)
                    372:   ("All Others" delete-other-windows *menu-window*))
                    373: 
                    374: (defmenu mouse-help-menu
                    375:   ("Text Region"
                    376:    mouse-help-region *menu-window* *menu-x* *menu-y* 'text)
                    377:   ("Scrollbar"
                    378:    mouse-help-region *menu-window* *menu-x* *menu-y* 'scrollbar)
                    379:   ("Modeline"
                    380:    mouse-help-region *menu-window* *menu-x* *menu-y* 'modeline)
                    381:   ("Minibuffer"
                    382:    mouse-help-region *menu-window* *menu-x* *menu-y* 'minibuffer)
                    383:   )
                    384:   
                    385: (defmenu emacs-quit-menu
                    386:   ("Suspend" suspend-emacstool)
                    387:   ("Quit" save-buffers-kill-emacs))
                    388: 
                    389: (defmenu emacs-menu
                    390:   ("Emacs Menu")
                    391:   ("Stuff Selection" sun-yank-selection)
                    392:   ("Expand" . expand-menu)
                    393:   ("Delete Window" . delete-window-menu)
                    394:   ("Previous Buffer" mouse-select-previous-buffer *menu-window*)
                    395:   ("Save Buffers" save-some-buffers)
                    396:   ("List Directory" list-directory nil)
                    397:   ("Dired" dired nil)
                    398:   ("Mouse Help" . mouse-help-menu)
                    399:   ("Quit" . emacs-quit-menu))
                    400: 
                    401: (defun emacs-menu-eval (window x y)
                    402:   "Pop-up menu of editor commands."
                    403:   (sun-menu-evaluate window (1+ x) (1- y) 'emacs-menu))
                    404: 
                    405: (defun mouse-expand-horizontally (window)
                    406:   (eval-in-window window
                    407:     (enlarge-window 4 t)
                    408:     (update-display)           ; Try to redisplay, since can get confused.
                    409:     ))
                    410: 
                    411: (defun mouse-expand-vertically (window)
                    412:   (eval-in-window window (enlarge-window 4)))
                    413: 
                    414: (defun mouse-select-previous-buffer (window)
                    415:   "Switch buffer in mouse window to most recently selected buffer."
                    416:   (eval-in-window window (switch-to-buffer (other-buffer))))
                    417: 
                    418: ;;;
                    419: ;;; minibuffer menu
                    420: ;;;
                    421: (defmenu minibuffer-menu 
                    422:   ("Minibuffer" message "Just some miscellanous minibuffer commands")
                    423:   ("Stuff" sun-yank-selection)
                    424:   ("Do-It" exit-minibuffer)
                    425:   ("Abort" abort-recursive-edit)
                    426:   ("Suspend" suspend-emacs))
                    427: 
                    428: (defun minibuffer-menu-eval (window x y)
                    429:   "Pop-up menu of commands."
                    430:   (sun-menu-evaluate window x (1- y) 'minibuffer-menu))
                    431: 
                    432: ;;; Thanks to Joe Wells for this hack.
                    433: ;;; GNU Emacs should supply something better...  Oh well.
                    434: (defun minibuf-prompt-length ()
                    435:   "Returns the length of the current minibuffer prompt."
                    436:   (save-window-excursion
                    437:     (select-window (minibuffer-window))
                    438:     (save-excursion
                    439:       (let ((screen-width (screen-width))
                    440:            (point-min (point-min))
                    441:            length)
                    442:        (goto-char point-min)
                    443:        (insert-char ?a screen-width)
                    444:        (goto-char point-min)
                    445:        (vertical-motion 1)
                    446:        (setq length (- screen-width (point)))
                    447:        (goto-char point-min)
                    448:        (delete-char screen-width)
                    449:        length))))
                    450: 
                    451: (defun mini-move-point (window x y)
                    452:   (mouse-move-point window (- x (minibuf-prompt-length)) 0))
                    453: 
                    454: (defun mini-set-mark-and-stuff (window x y)
                    455:   (mouse-set-mark-and-stuff window (- x (minibuf-prompt-length)) 0))
                    456: 
                    457: 
                    458: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
                    459: ;;; resize from modeline
                    460: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
                    461: 
                    462: (defvar *modeline-hit* nil "store original modline-hit data")
                    463: 
                    464: (defun modeline-hit (w x y) (interactive)
                    465:   (setq *modeline-hit* (cons w (caddr hit))))
                    466: 
                    467: (defun mouse-drag-modeline (w x y) (interactive)
                    468:   (if *modeline-hit*
                    469:       (let ((delta (- (cdr *modeline-hit*) (caddr hit)))
                    470:            (win (car *modeline-hit*)))
                    471:        (setq *modeline-hit* nil)
                    472:        (eval-in-window win (shrink-window delta)))))
                    473: 
                    474: ;; Modeline drag to resize:
                    475: ;; Watch out for interference if you use "up" for something else
                    476: ;; For example: '(text up left) is used...
                    477: (global-set-mouse '(modeline      middle)      'modeline-hit)
                    478: (global-set-mouse '(modeline   up middle)      'mouse-drag-modeline)
                    479: (global-set-mouse '(text       up middle)      'mouse-drag-modeline)
                    480: (global-set-mouse '(scrollbar  up middle)      'mouse-drag-modeline)
                    481: (global-set-mouse '(minibuffer up middle)      'mouse-drag-modeline)
                    482: 
                    483: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
                    484: ;;; modeline-menu functions
                    485: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
                    486: 
                    487: 
                    488: ;; parse thru a modeline-menu, finding item under nth character
                    489: (defun nth-menu-elt (n menu)
                    490:   (let ((n (- n (length (caar menu)))))
                    491:     (if (< n 0)
                    492:        (cdar menu)
                    493:        (if (consp (cdr menu))
                    494:            (nth-menu-elt n (cdr menu))
                    495:            (cdar menu)))))
                    496: 
                    497: (defun modeline-menu-command (x menu)
                    498:   "*Evaluate the command associated with the character N of the MENU.
                    499: Each element of MENU is of the form (STRING . ACTION). The STRING is 
                    500: displayed in the modeline and ACTION to invoked when that string is moused. 
                    501: If (commandp ACTION) is true,the ACTION is called interactively; 
                    502: otherwise, ACTION is evaled."
                    503:   (let ((command (nth-menu-elt x menu)))
                    504:     (if (commandp command)
                    505:        (call-interactively command)
                    506:        (eval command))))
                    507: 
                    508: (defun modeline-menu-string (menu)
                    509:   "*Extract the strings in (cdr MENU) and concatenate them into a string.
                    510: The string in (car MENU) is not included in the returned string.
                    511:     For best results, (length (caar menu)) should equal 
                    512:     the prefix in the actual modeline format string."
                    513:   (apply 'concat (mapcar 'car (cdr menu))))
                    514: 
                    515: 
                    516: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
                    517: ;;; Buffer-mode Mouse commands
                    518: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
                    519: 
                    520: (defun Buffer-at-mouse (w x y)
                    521:   (save-window-excursion 
                    522:     (mouse-move-point w x y)
                    523:     (Buffer-menu-buffer t)))
                    524: 
                    525: (defun mouse-buffer-bury (w x y)
                    526:   "Bury the indicated buffer."
                    527:   (bury-buffer (Buffer-at-mouse w x y))
                    528:   (list-buffers)
                    529:   )
                    530: 
                    531: (defun mouse-buffer-select (w x y)
                    532:   "Select the indicated buffer in other-window."
                    533:   (switch-to-buffer (Buffer-at-mouse w x y))
                    534:   (list-buffers)
                    535:   )
                    536: 
                    537: (defun mouse-buffer-delete (w x y)
                    538:   "mark indicated buffer for delete"
                    539:   (save-window-excursion
                    540:     (mouse-move-point w x y)
                    541:     (Buffer-menu-delete)
                    542:     ))
                    543: 
                    544: (defun mouse-buffer-mark (w x y)
                    545:   "mark indicated buffer for delete"
                    546:   (save-window-excursion
                    547:     (mouse-move-point w x y)
                    548:     (Buffer-menu-mark)
                    549:     ))
                    550: 
                    551: (defun mouse-buffer-execute (w x y)
                    552:   "execute buffer-menu selections"
                    553:   (save-window-excursion
                    554:     (mouse-move-point w x y)
                    555:     (Buffer-menu-execute)
                    556:     ))
                    557:   
                    558: (defun buffer-modeline-menu-cmd (w x y)
                    559:   (select-window w)
                    560:   ;; goto a line with a buffer, skip first two lines
                    561:   (let ((line-no (count-lines 1 (point))))
                    562:     (if (< line-no 2) (forward-line (- 2 line-no))))
                    563:   (modeline-menu-command x buffer-modeline-menu))
                    564: 
                    565: (defvar buffer-modeline-menu '(("--%%-" . (forward-line -1))
                    566:                               (" [ " . (forward-line -1))
                    567:                               ("Mark " . Buffer-menu-mark)
                    568:                               ("Del " . Buffer-menu-delete)
                    569:                               ("Save " . Buffer-menu-save)
                    570:                               ("Undo " . Buffer-menu-unmark)
                    571:                               ("Prev " . (forward-line -1))
                    572:                               ("Next " . (forward-line 1))
                    573:                               ("Edit " . Buffer-menu-select)
                    574:                               ("eXec " . Buffer-menu-execute)
                    575:                               ("] " . (forward-line 1))
                    576:                               )
                    577:   "*Each element of this list is a character STRING
                    578: \(that is displayed in the modeline\) consed to an ACTION to invoke
                    579: when that string is moused. If (commandp ACTION) is true,
                    580: the ACTION is called interactively; otherwise, ACTION is evaled."
                    581:   )
                    582: 
                    583: (defun enable-mouse-in-buffer-list ()
                    584:   "Call this to enable mouse selections in *Buffer List*
                    585:     LEFT puts the indicated buffer in the selected window.
                    586:     MIDDLE buries the indicated buffer.
                    587:     RIGHT marks the indicated buffer for deletion.
                    588:     MIDDLE-RIGHT deletes the marked buffers.
                    589: To unmark a buffer marked for deletion, select it with LEFT."
                    590:   
                    591:   (local-set-mouse '(text left)   'mouse-buffer-select)            
                    592:   (local-set-mouse '(text middle) 'mouse-buffer-bury)
                    593:   (local-set-mouse '(text right)  'mouse-buffer-delete)
                    594:   (local-set-mouse '(text middle left) 'mouse-buffer-mark)
                    595:   (local-set-mouse '(text middle right) 'mouse-buffer-execute)
                    596:   (setq mode-line-buffer-identification
                    597:        (list (modeline-menu-string buffer-modeline-menu) "%b"))
                    598:   (local-set-mouse '(modeline left) 'buffer-modeline-menu-cmd)
                    599:   (local-set-mouse '(modeline left double) 'buffer-modeline-menu-cmd)
                    600:   )
                    601: 
                    602: (defvar buffer-menu-mode-hook nil "run-hooks when entering Buffer Menu mode.")
                    603: 
                    604: (if (memq 'enable-mouse-in-buffer-list buffer-menu-mode-hook)
                    605:     nil
                    606:     (setq buffer-menu-mode-hook
                    607:          (cons 'enable-mouse-in-buffer-list buffer-menu-mode-hook)))
                    608: 
                    609: ;; make sure a new buffer is created using buffer-menu-mode-hook
                    610: (if (get-buffer "*Buffer List*") (kill-buffer "*Buffer List*"))
                    611: 
                    612: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
                    613: ;;; mouse fill (useful to re-format mail messages with long lines
                    614: ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
                    615: (defun mouse-fill-paragraph (w x y)
                    616:   "Utility function to fill paragraphs from mouse click, 
                    617: useful in Mail to read things that have long lines."
                    618:   (eval-in-window w
                    619:     (mouse-move-point w x y)
                    620:     (let (fill-prefix)
                    621:       (fill-paragraph nil))))
                    622: 
                    623: 
                    624: (defun fill-some-paragraphs ()
                    625:   "*Fill the succeeding paragraphs that have the same prefix."
                    626:   (interactive)
                    627:   (let (fill-prefix fpr eop beg end)
                    628:     (set-fill-prefix)
                    629:     ;; if no fill-prefix, then match lines beginning with an alpha char.
                    630:     (setq fpr (or fill-prefix "[a-zA-Z]"))
                    631:     (setq fpr (if (let ((sm (string-match "[ \t]*" fpr)))
                    632:                    (and sm (= (length fpr) (match-end 0))))
                    633:                  ;; if fill-prefix is just TAB-SPACE, then also accept
                    634:                  ;; empty lines in the region.
                    635:                  (concat "\\(" fpr "\\)\\|\\(^$\\)")
                    636:                  (regexp-quote fpr)
                    637:                ))
                    638:     ;; now that we have the prefix, find a region of lines that match:
                    639:     (save-excursion 
                    640:       (beginning-of-line 1)
                    641:       (setq beg (point))
                    642:       ;; find lines with similar prefixes:
                    643:       (while (progn (forward-line 1)
                    644:                    (setq end (point))
                    645:                    (and (not (eobp)) (looking-at fpr))))
                    646:       (fill-region beg end nil))))
                    647: 
                    648: ;; fill all succeeding paragraphs with this fill prefix
                    649: (defun mouse-fill-paragraphs (w x y)
                    650:   "Utility function to fill paragraphs from mouse click, 
                    651: useful in Mail to read things that have long lines."
                    652:   (eval-in-window w
                    653:     (mouse-move-point w x y)
                    654:     (fill-some-paragraphs)))
                    655: 
                    656: ;;;*******************************************************************
                    657: ;;;
                    658: ;;;           Global Mouse Bindings.
                    659: ;;;
                    660: ;;; There is some sense to this mouse binding madness:
                    661: ;;; LEFT and RIGHT scrolls are inverses.
                    662: ;;; SHIFT makes an opposite meaning in the scroll bar.
                    663: ;;; SHIFT is an alternative to DOUBLE (but double chords do not exist).
                    664: ;;; META makes the scrollbar functions work in the text region.
                    665: ;;; MIDDLE operates the mark
                    666: ;;; LEFT operates at point
                    667: 
                    668: ;;; META commands are generally non-destructive,
                    669: ;;; SHIFT is a little more dangerous.
                    670: ;;; CONTROL is for the really complicated ones.
                    671: 
                    672: ;;; CONTROL-META-SHIFT-RIGHT gives help on that region.
                    673: 
                    674: ;;;
                    675: ;;; Text Region mousemap
                    676: ;;;
                    677: ;; The basics: Point, Mark, Menu, Sun-Select:
                    678: (global-set-mouse '(text        left)  'mouse-drag-move-point)
                    679: (global-set-mouse '(text     up left)  'mouse-drag-set-mark-stuff)
                    680: (global-set-mouse '(text shift  left)  'mouse-exch-pt-and-mark)
                    681: (global-set-mouse '(text double left)  'mouse-exch-pt-and-mark)
                    682: 
                    683: (global-set-mouse '(text       middle) 'mouse-set-mark-and-stuff)
                    684: 
                    685: (global-set-mouse '(text       right)  'emacs-menu-eval)
                    686: (global-set-mouse '(text shift right)  '(sun-yank-selection))
                    687: (global-set-mouse '(text double        right)  '(sun-yank-selection))
                    688: 
                    689: ;; The Slymoblics multi-command for Save, Kill, Copy, Move:
                    690: (global-set-mouse '(text shift middle) 'mouse-save/delete/yank)
                    691: (global-set-mouse '(text double        middle) 'mouse-save/delete/yank)
                    692: 
                    693: ;; Save, Kill, Copy, Move Things:
                    694: ;; control-left composes with control middle/right to produce copy/move
                    695: (global-set-mouse '(text control middle            )   'mouse-save-thing-there)
                    696: (global-set-mouse '(text control right      )  'mouse-kill-thing-there)
                    697: (global-set-mouse '(text control       left)   'mouse-yank-at-point)
                    698: (global-set-mouse '(text control middle        left)   'mouse-copy-thing)
                    699: (global-set-mouse '(text control right left)   'mouse-move-thing)
                    700: (global-set-mouse '(text control right middle) 'mouse-mark-thing)
                    701: 
                    702: ;; The Universal mouse help command (press all buttons):
                    703: (global-set-mouse '(text shift  control meta right)    'mouse-help-region)
                    704: (global-set-mouse '(text double control meta right)    'mouse-help-region)
                    705: 
                    706: ;;; Meta in Text Region is like meta version in scrollbar:
                    707: (global-set-mouse '(text meta        left)     'mouse-line-to-top)
                    708: (global-set-mouse '(text meta shift  left)     'mouse-line-to-bottom)
                    709: (global-set-mouse '(text meta double left)     'mouse-line-to-bottom)
                    710: (global-set-mouse '(text meta         middle)  'mouse-line-to-middle)
                    711: (global-set-mouse '(text meta shift   middle)  'mouse-middle-to-line)
                    712: (global-set-mouse '(text meta double  middle)  'mouse-middle-to-line)
                    713: (global-set-mouse '(text meta control middle)  'mouse-split-vertically)
                    714: (global-set-mouse '(text meta        right)    'mouse-top-to-line)
                    715: (global-set-mouse '(text meta shift  right)    'mouse-bottom-to-line)
                    716: (global-set-mouse '(text meta double right)    'mouse-bottom-to-line)
                    717: 
                    718: ;; Miscellaneous:
                    719: (global-set-mouse '(text meta control left)    'mouse-call-kbd-macro)
                    720: (global-set-mouse '(text meta control right)   'mouse-undo)
                    721: 
                    722: ;;;
                    723: ;;; Scrollbar mousemap.
                    724: ;;; Are available in the Scrollbar Region, or with Meta Text (or Meta Scrollbar)
                    725: ;;;
                    726: (global-set-mouse '(scrollbar        left)     'mouse-line-to-top)
                    727: (global-set-mouse '(scrollbar shift  left)     'mouse-line-to-bottom)
                    728: (global-set-mouse '(scrollbar double left)     'mouse-line-to-bottom)
                    729: 
                    730: (global-set-mouse '(scrollbar         middle)  'mouse-line-to-middle)
                    731: (global-set-mouse '(scrollbar shift   middle)  'mouse-middle-to-line)
                    732: (global-set-mouse '(scrollbar double  middle)  'mouse-middle-to-line)
                    733: (global-set-mouse '(scrollbar control middle)  'mouse-split-vertically)
                    734: 
                    735: (global-set-mouse '(scrollbar        right)    'mouse-top-to-line)
                    736: (global-set-mouse '(scrollbar shift  right)    'mouse-bottom-to-line)
                    737: (global-set-mouse '(scrollbar double right)    'mouse-bottom-to-line)
                    738: 
                    739: (global-set-mouse '(scrollbar meta        left)                'mouse-line-to-top)
                    740: (global-set-mouse '(scrollbar meta shift  left)                'mouse-line-to-bottom)
                    741: (global-set-mouse '(scrollbar meta double left)                'mouse-line-to-bottom)
                    742: (global-set-mouse '(scrollbar meta         middle)     'mouse-line-to-middle)
                    743: (global-set-mouse '(scrollbar meta shift   middle)     'mouse-middle-to-line)
                    744: (global-set-mouse '(scrollbar meta double  middle)     'mouse-middle-to-line)
                    745: (global-set-mouse '(scrollbar meta control middle)     'mouse-split-vertically)
                    746: (global-set-mouse '(scrollbar meta        right)       'mouse-top-to-line)
                    747: (global-set-mouse '(scrollbar meta shift  right)       'mouse-bottom-to-line)
                    748: (global-set-mouse '(scrollbar meta double right)       'mouse-bottom-to-line)
                    749: 
                    750: ;; And the help menu:
                    751: (global-set-mouse '(scrollbar shift  control meta right) 'mouse-help-region)
                    752: (global-set-mouse '(scrollbar double control meta right) 'mouse-help-region)
                    753: 
                    754: ;;;
                    755: ;;; Modeline mousemap.
                    756: ;;;
                    757: ;;; Note: meta of any single button selects window.
                    758: 
                    759: (global-set-mouse '(modeline double left)      'mouse-scroll-up)
                    760: (global-set-mouse '(modeline shift  left)      'mouse-scroll-up)
                    761: (global-set-mouse '(modeline double  middle)   'mouse-scroll-proportional)
                    762: (global-set-mouse '(modeline shift   middle)   'mouse-scroll-proportional)
                    763: (global-set-mouse '(modeline double right)     'mouse-scroll-down)
                    764: (global-set-mouse '(modeline shift  right)     'mouse-scroll-down)
                    765: 
                    766: (global-set-mouse '(modeline meta   left)      'mouse-select-window)
                    767: (global-set-mouse '(modeline meta    middle)   'mouse-select-window)
                    768: (global-set-mouse '(modeline meta   right)     'mouse-select-window)
                    769: 
                    770: ;;; control-left selects this window, control-right deletes it.
                    771: (global-set-mouse '(modeline control left)     'mouse-delete-other-windows)
                    772: (global-set-mouse '(modeline control middle)   'mouse-split-horizontally)
                    773: (global-set-mouse '(modeline control right)    'mouse-delete-window)
                    774: 
                    775: ;; in case of confusion, just select it:
                    776: (global-set-mouse '(modeline control left right)'mouse-select-window)
                    777: 
                    778: ;; even without confusion (and without the keyboard) select it:
                    779: (global-set-mouse '(modeline left right)       'mouse-select-window)
                    780: 
                    781: ;; And the help menu:
                    782: (global-set-mouse '(modeline shift  control meta right)        'mouse-help-region)
                    783: (global-set-mouse '(modeline double control meta right)        'mouse-help-region)
                    784: 
                    785: 
                    786: ;;;
                    787: ;;; Minibuffer Mousemap
                    788: ;;; Demonstrating some variety:
                    789: ;;;
                    790: (global-set-mouse '(minibuffer left)           'mini-move-point)
                    791: 
                    792: (global-set-mouse '(minibuffer         middle) 'mini-set-mark-and-stuff)
                    793: 
                    794: (global-set-mouse '(minibuffer shift   middle) '(prev-complex-command))
                    795: (global-set-mouse '(minibuffer double  middle) '(prev-complex-command))
                    796: (global-set-mouse '(minibuffer control middle) '(next-complex-command 1))
                    797: (global-set-mouse '(minibuffer meta    middle) '(previous-complex-command 1))
                    798: 
                    799: (global-set-mouse '(minibuffer right)  'minibuffer-menu-eval)
                    800: 
                    801: (global-set-mouse '(minibuffer shift  control meta right)  'mouse-help-region)
                    802: (global-set-mouse '(minibuffer double control meta right)  'mouse-help-region)
                    803: 

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