Mercurial > hg > xemacs-beta
annotate lisp/window-xemacs.el @ 5726:179f4a9201b5
Merge.
| author | Mike Sperber <sperber@deinprogramm.de> |
|---|---|
| date | Tue, 05 Mar 2013 08:55:56 +0100 |
| parents | c6b1500299a7 |
| children | dbd8305e13cb |
| rev | line source |
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| 428 | 1 ;;; window-xemacs.el --- XEmacs window commands aside from those written in C. |
| 2 | |
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3 ;; Copyright (C) 1985, 1989, 1993-94, 1997, 2012 Free Software Foundation, Inc. |
| 428 | 4 ;; Copyright (C) 1995, 1996 Ben Wing. |
| 5 | |
| 6 ;; Maintainer: XEmacs Development Team | |
| 7 ;; Keywords: frames, extensions, dumped | |
| 8 | |
| 9 ;; This file is part of XEmacs. | |
| 10 | |
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11 ;; XEmacs is free software: you can redistribute it and/or modify it |
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12 ;; under the terms of the GNU General Public License as published by the |
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13 ;; Free Software Foundation, either version 3 of the License, or (at your |
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14 ;; option) any later version. |
| 428 | 15 |
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16 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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17 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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18 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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19 ;; for more details. |
| 428 | 20 |
| 21 ;; You should have received a copy of the GNU General Public License | |
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22 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 428 | 23 |
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24 ;;; Synched up with: Not synched except for partial sync of |
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25 ;;; recenter-top-bottom |
| 428 | 26 |
| 27 ;;; Commentary: | |
| 28 | |
| 29 ;; This file is dumped with XEmacs. | |
| 30 | |
| 31 ;; slb - 5/29/97 | |
| 32 ;; Split apart from window.el in order to keep that file better in synch | |
| 33 ;; with Emacs. | |
| 34 | |
| 35 ;;; Code: | |
| 36 | |
| 37 (defgroup windows nil | |
| 38 "Windows within a frame." | |
| 39 :group 'environment) | |
| 40 | |
| 41 (defun recenter (&optional n window) | |
| 42 "Center point in WINDOW and redisplay frame. With N, put point on line N. | |
| 43 The desired position of point is always relative to the window. | |
| 44 Just C-u as prefix means put point in the center of the window. | |
| 45 No N (i.e., it is nil) erases the entire frame and then | |
| 46 redraws with point in the center of the window. | |
| 47 If WINDOW is nil, the selected window is used." | |
| 48 (interactive "_P") | |
| 49 (center-to-window-line (if (consp n) nil n) window) | |
| 50 (when (null n) | |
| 51 (redraw-frame (window-frame window) t))) | |
| 52 | |
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53 (defvar recenter-last-op nil |
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54 "Indicates the last recenter operation performed. |
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55 Possible values: `top', `middle', `bottom', integer or float numbers.") |
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56 |
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57 ;; Merged from FSF 23.2 with use of scroll-margin for top and bottom |
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58 ;; destinations removed. We don't support scroll-margin. |
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59 (defcustom recenter-positions '(middle top bottom) |
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60 "Cycling order for `recenter-top-bottom'. |
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61 A list of elements with possible values `top', `middle', `bottom', |
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62 integer or float numbers that define the cycling order for |
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63 the command `recenter-top-bottom'. |
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64 |
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65 Top and bottom destinations are the window top and bottom. Middle |
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66 redraws the frame and centers point vertically within the window. |
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67 Integer number moves current line to the specified absolute |
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68 window-line. Float number between 0.0 and 1.0 means the percentage of |
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69 the screen space from the top. The default cycling order is middle -> |
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70 top -> bottom." |
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71 :type '(repeat (choice |
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72 (const :tag "Top" top) |
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73 (const :tag "Middle" middle) |
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74 (const :tag "Bottom" bottom) |
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75 (integer :tag "Line number") |
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76 (float :tag "Percentage"))) |
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77 :version "23.2" |
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78 :group 'windows) |
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79 |
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80 (defun recenter-top-bottom (&optional arg) |
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81 "Move current buffer line to the specified window line. |
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82 With no prefix argument, successive calls place point according |
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83 to the cycling order defined by `recenter-positions'. |
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84 |
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85 A prefix argument is handled like `recenter': |
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86 With numeric prefix ARG, move current line to window-line ARG. |
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87 With plain `C-u', move current line to window center." |
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88 (interactive "P") |
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89 (cond |
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90 (arg (recenter arg)) ; Always respect ARG. |
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91 (t |
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92 (setq recenter-last-op |
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93 (if (eq this-command last-command) |
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94 (car (or (cdr (member recenter-last-op recenter-positions)) |
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95 recenter-positions)) |
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96 (car recenter-positions))) |
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97 (cond ((eq recenter-last-op 'middle) |
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98 (recenter)) |
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99 ((eq recenter-last-op 'top) |
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100 (recenter 0)) |
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101 ((eq recenter-last-op 'bottom) |
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102 (recenter -1)) |
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103 ((integerp recenter-last-op) |
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104 (recenter recenter-last-op)) |
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105 ((floatp recenter-last-op) |
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106 (recenter (round (* recenter-last-op (window-height))))))))) |
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107 |
| 444 | 108 (defun backward-other-window (count &optional which-frames which-devices) |
| 109 "Select the COUNT'th different window on this frame, going backwards. | |
| 110 This is just like calling `other-window' with COUNT negated." | |
| 428 | 111 (interactive "p") |
| 444 | 112 (other-window (- count) which-frames which-devices)) |
| 428 | 113 |
| 114 (defalias 'windows-of-buffer 'get-buffer-window-list) | |
| 115 | |
| 116 (defun buffer-in-multiple-windows-p (&optional buffer) | |
| 117 "Return t if BUFFER is in multiple windows. | |
| 118 If BUFFER is not specified, the current buffer will be used." | |
| 119 (setq buffer (or buffer | |
| 120 (get-buffer buffer) | |
| 121 (get-file-buffer buffer) | |
| 122 (current-buffer))) | |
| 123 (> (length (windows-of-buffer buffer)) 1)) | |
| 124 | |
| 125 (defun window-list (&optional frame minibuf window) | |
| 126 "Return a list of windows on FRAME, beginning with WINDOW. | |
| 127 FRAME and WINDOW default to the selected ones. | |
| 128 Optional second arg MINIBUF t means count the minibuffer window | |
| 129 even if not active. If MINIBUF is neither t nor nil it means | |
| 130 not to count the minibuffer even if it is active." | |
| 1261 | 131 (setq frame (or frame (selected-frame)) |
| 132 window (or window (selected-window frame))) | |
| 428 | 133 (if (not (eq (window-frame window) frame)) |
| 134 (error "Window must be on frame.")) | |
| 135 (let ((current-frame (selected-frame)) | |
| 136 list) | |
| 137 (unwind-protect | |
| 138 (save-window-excursion | |
| 139 (select-frame frame) | |
| 140 (walk-windows | |
| 141 (function (lambda (cur-window) | |
| 142 (if (not (eq window cur-window)) | |
| 143 (setq list (cons cur-window list))))) | |
| 144 minibuf) | |
| 145 (setq list (cons window list))) | |
| 146 (select-frame current-frame)))) | |
| 147 | |
| 148 ;; We used to have set-window-dedicated-p as an obsolete version | |
| 149 ;; of set-window-buffer-dedicated, but it really makes more sense | |
| 150 ;; this way. | |
| 151 | |
| 152 (make-obsolete 'set-window-buffer-dedicated 'set-window-dedicated-p) | |
| 153 (defun set-window-buffer-dedicated (window buffer) | |
| 154 "Make WINDOW display BUFFER and be dedicated to that buffer. | |
| 155 Then Emacs will not automatically change which buffer appears in WINDOW. | |
| 156 If BUFFER is nil, make WINDOW not be dedicated (but don't change which | |
| 157 buffer appears in it currently)." | |
| 158 (if (bufferp buffer) | |
| 159 (set-window-buffer window (get-buffer-create buffer))) | |
| 160 (set-window-dedicated-p window (not (null buffer)))) | |
| 1149 | 161 |
| 162 ;; Window configurations | |
| 428 | 163 |
| 3646 | 164 (defcustom window-configuration-includes-position nil |
| 165 "*Whether restoring window configurations will restore positions too. | |
| 166 If nil, only the size of windows will be restored. | |
| 167 | |
| 168 Note that setting this value to t may have counterintuitive consequences, | |
| 169 if a window manager employing virtual desktops is in use." | |
| 170 :type 'boolean | |
| 171 :group 'windows) | |
| 172 | |
| 1149 | 173 (defstruct saved-window |
| 174 currentp minibufferp minibuffer-scrollp | |
| 175 buffer mark-marker | |
| 176 start-marker | |
| 177 point-marker | |
| 178 pixel-left pixel-top pixel-right pixel-bottom | |
| 179 hscroll modeline-hscroll | |
| 180 dedicatedp | |
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181 first-hchild first-vchild next-child |
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182 window) |
| 1149 | 183 |
| 184 (defstruct window-configuration | |
| 185 frame | |
| 2872 | 186 frame-top frame-left |
| 1149 | 187 frame-pixel-width frame-pixel-height |
| 188 current-buffer | |
| 189 minibuffer-pixel-height | |
| 190 min-width min-height | |
| 191 saved-root-window) | |
| 192 | |
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193 ; make sure we don't get affected by harmful advice |
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194 (fset 'real-split-window (symbol-function 'split-window)) |
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195 (fset 'real-delete-window (symbol-function 'delete-window)) |
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196 |
| 1149 | 197 (defun window-configuration-equal (conf-1 conf-2) |
| 198 "Returns a boolean indicating whether the two given configurations | |
| 3646 | 199 are identical. |
| 200 | |
| 201 Window configurations containing windows with different window | |
| 202 positions are not identical iff `window-configuration-includes-position' | |
| 203 is t." | |
| 1149 | 204 (or (eq conf-1 conf-2) |
| 205 (and (eq (window-configuration-frame conf-1) | |
| 206 (window-configuration-frame conf-2)) | |
| 207 (= (window-configuration-frame-pixel-width conf-1) | |
| 208 (window-configuration-frame-pixel-width conf-2)) | |
| 209 (= (window-configuration-frame-pixel-height conf-1) | |
| 210 (window-configuration-frame-pixel-height conf-2)) | |
| 3646 | 211 (if window-configuration-includes-position |
| 212 (and (equal (window-configuration-frame-top conf-1) | |
| 213 (window-configuration-frame-top conf-2)) | |
| 214 (equal (window-configuration-frame-left conf-1) | |
| 215 (window-configuration-frame-left conf-2))) | |
| 216 t) | |
| 1149 | 217 (eq (window-configuration-current-buffer conf-1) |
| 218 (window-configuration-current-buffer conf-2)) | |
| 219 (saved-window-equal (window-configuration-saved-root-window conf-1) | |
| 220 (window-configuration-saved-root-window conf-2))))) | |
| 221 | |
| 222 (defun saved-window-equal (saved-1 saved-2) | |
| 223 "Returns a boolean indicating whether the two given saved windows | |
| 224 are identical." | |
| 225 (or (eq saved-1 saved-2) | |
| 226 (and (eq (saved-window-currentp saved-1) | |
| 227 (saved-window-currentp saved-2)) | |
| 228 (eq (saved-window-minibuffer-scrollp saved-1) | |
| 229 (saved-window-minibuffer-scrollp saved-2)) | |
| 230 (eq (saved-window-buffer saved-1) | |
| 231 (saved-window-buffer saved-2)) | |
| 232 (equal (saved-window-mark-marker saved-1) | |
| 233 (saved-window-mark-marker saved-2)) | |
| 234 (or (and (saved-window-currentp saved-1) | |
| 235 (saved-window-currentp saved-2)) | |
| 236 (equal (saved-window-start-marker saved-1) | |
| 237 (saved-window-start-marker saved-2))) | |
| 238 (or (and (saved-window-currentp saved-1) | |
| 239 (saved-window-currentp saved-2)) | |
| 240 (equal (saved-window-point-marker saved-1) | |
| 241 (saved-window-point-marker saved-2))) | |
| 242 (= (saved-window-pixel-left saved-1) | |
| 243 (saved-window-pixel-left saved-2)) | |
| 244 (= (saved-window-pixel-top saved-1) | |
| 245 (saved-window-pixel-top saved-2)) | |
| 246 (= (saved-window-pixel-right saved-1) | |
| 247 (saved-window-pixel-right saved-2)) | |
| 248 (= (saved-window-pixel-bottom saved-1) | |
| 249 (saved-window-pixel-bottom saved-2)) | |
| 250 (= (saved-window-hscroll saved-1) | |
| 251 (saved-window-hscroll saved-2)) | |
| 1387 | 252 (equal (saved-window-modeline-hscroll saved-1) |
| 253 (saved-window-modeline-hscroll saved-2)) | |
| 1149 | 254 (eq (saved-window-dedicatedp saved-1) |
| 255 (saved-window-dedicatedp saved-2)) | |
| 256 (maybe-saved-window-equal (saved-window-first-hchild saved-1) | |
| 257 (saved-window-first-hchild saved-2)) | |
| 258 (maybe-saved-window-equal (saved-window-first-vchild saved-1) | |
| 259 (saved-window-first-vchild saved-2)) | |
| 260 (maybe-saved-window-equal (saved-window-next-child saved-1) | |
| 261 (saved-window-next-child saved-2))))) | |
| 262 | |
| 263 (defun maybe-saved-window-equal (maybe-saved-1 maybe-saved-2) | |
| 264 "Returns a boolean indicating whether the two given saved windows | |
| 265 or NILs are identical." | |
| 266 (cond | |
| 267 ((and (not maybe-saved-1) (not maybe-saved-2)) t) | |
| 268 ((not maybe-saved-1) (not maybe-saved-2)) | |
| 269 ((not maybe-saved-2) (not maybe-saved-1)) | |
| 270 (t (saved-window-equal maybe-saved-1 maybe-saved-2)))) | |
| 271 | |
| 272 (defun current-window-configuration (&optional frame) | |
| 273 "Return an object representing the current window configuration of FRAME. | |
| 274 If FRAME is nil or omitted, use the selected frame. | |
| 275 This describes the number of windows, their sizes and current buffers, | |
| 276 and for each window on FRAME the displayed buffer, where display | |
| 277 starts, and the positions of point and mark. | |
| 278 An exception is made for point in the current buffer: | |
| 279 its value is -not- saved." | |
| 280 (let ((frame (or frame (selected-frame)))) | |
| 281 ;; The original C code used complicated but still incomplete logic | |
| 282 ;; to decide if and how to restore the size of the minibuffer. It | |
| 283 ;; goes something like this: | |
| 284 ; (let ((real-font-height | |
| 285 ; (font-height (face-font 'default) frame)) | |
| 286 ; (minibuffer-height | |
| 287 ; (if (and (minibuffer-window frame) | |
| 288 ; (not (frame-minibuffer-only-p frame))) | |
| 289 ; (window-pixel-height (minibuffer-window frame)) | |
| 290 ; 0))) | |
| 291 ; ...) | |
| 292 | |
| 293 (make-window-configuration | |
| 294 :frame frame | |
| 2885 | 295 :frame-top (frame-property frame 'top) |
| 296 :frame-left (frame-property frame 'left) | |
| 1149 | 297 :frame-pixel-width (frame-pixel-width frame) |
| 298 :frame-pixel-height (frame-pixel-height frame) | |
| 299 :current-buffer (current-buffer) | |
| 300 :min-width window-min-width :min-height window-min-height | |
| 301 :minibuffer-pixel-height (window-pixel-height (minibuffer-window frame)) | |
| 302 ;; this tries to do what the old code did: | |
| 303 ; :minibuffer-height (if (zerop (% minibuffer-height real-font-height)) | |
| 304 ; (- (/ minibuffer-height real-font-height)) ; lines | |
| 305 ; minibuffer-height) ; pixels | |
| 306 :saved-root-window (root-window->saved-window (frame-root-window frame))))) | |
| 307 | |
| 308 (defun root-window->saved-window (window) | |
| 309 "Converts a root window into a tree of saved-window structures." | |
| 310 (let ((buffer (window-buffer window)) | |
| 311 (edges (window-pixel-edges window))) | |
| 312 (let ((left (nth 0 edges)) | |
| 313 (top (nth 1 edges)) | |
| 314 (right (nth 2 edges)) | |
| 315 (bottom (nth 3 edges))) | |
| 316 (let ((saved-window | |
| 317 (make-saved-window | |
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318 :window window |
| 1149 | 319 :currentp (eq window (selected-window (window-frame window))) |
| 320 :minibufferp (eq window (minibuffer-window (window-frame window))) | |
| 321 :minibuffer-scrollp (eq window minibuffer-scroll-window) | |
| 322 :buffer buffer | |
| 323 :pixel-left left :pixel-top top :pixel-right right :pixel-bottom bottom | |
| 324 :hscroll (window-hscroll window) | |
| 325 :modeline-hscroll (modeline-hscroll window) | |
| 326 :dedicatedp (window-dedicated-p window) | |
| 327 :first-hchild (if (window-first-hchild window) | |
| 328 (root-window->saved-window (window-first-hchild window)) | |
| 329 nil) | |
| 330 :first-vchild (if (window-first-vchild window) | |
| 331 (root-window->saved-window (window-first-vchild window)) | |
| 332 nil) | |
| 333 :next-child (if (window-next-child window) | |
| 334 (root-window->saved-window (window-next-child window)) | |
| 335 nil)))) | |
| 336 (if buffer | |
| 337 (progn | |
| 338 (let ((marker (make-marker))) | |
| 339 (set-marker marker (window-start window) buffer) | |
| 340 (setf (saved-window-start-marker saved-window) marker)) | |
| 4136 | 341 (if (not (eq buffer (current-buffer))) |
| 342 (let ((marker (make-marker))) | |
| 343 (set-marker marker (window-point window) buffer) | |
| 344 (setf (saved-window-point-marker saved-window) marker))) | |
| 1149 | 345 (setf (saved-window-mark-marker saved-window) |
| 346 (copy-marker (mark-marker t buffer))))) | |
| 347 saved-window)))) | |
| 348 | |
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349 (defmacro save-window-excursion/mapping (&rest body) |
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350 "Execute body, preserving window sizes and contents. |
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351 Restores which buffer appears in which window, where display starts, |
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352 as well as the current buffer. |
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353 Return alist mapping old windows to new windows. |
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354 This alist maps the originally captured windows to the windows that correspond |
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355 to them in the restored configuration. It does not include entries for |
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356 windows that have not changed identity. |
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357 Does not restore the value of point in current buffer." |
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358 (let ((window-config (gensym 'window-config)) |
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359 (mapping (gensym 'mapping))) |
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360 `(let ((,window-config (current-window-configuration)) |
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361 (,mapping)) |
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362 (unwind-protect |
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363 (progn ,@body) |
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364 (setq ,mapping (set-window-configuration/mapping ,window-config))) |
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365 ,mapping))) |
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366 |
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367 (defun set-window-configuration (configuration &optional set-frame-size-p) |
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368 "Set the configuration of windows and buffers as specified by CONFIGURATION. |
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369 CONFIGURATION must be a value previously returned |
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370 by `current-window-configuration'. |
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371 If SET-FRAME-SIZE-P is true, the frame size is also restored. |
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372 " |
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373 (set-window-configuration/mapping configuration set-frame-size-p) |
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374 nil) ; make sure nobody relies on mapping return value |
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375 |
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376 (defun set-window-configuration/mapping (configuration &optional set-frame-size-p) |
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377 "Set the configuration of windows and buffers as specified by CONFIGURATION. |
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378 CONFIGURATION must be a value previously returned |
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379 by `current-window-configuration'. |
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380 If SET-FRAME-SIZE-P is true, the frame size is also restored. |
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381 Return alist mapping old windows to new windows. |
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382 This alist maps the originally captured windows to the windows that correspond |
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383 to them in the restored configuration. It does not include entries for |
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384 windows that have not changed identity." |
| 1149 | 385 (let ((frame (window-configuration-frame configuration))) |
| 386 (if (and (frame-live-p frame) | |
| 387 (not (window-configuration-equal configuration | |
| 388 (current-window-configuration)))) | |
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389 (really-set-window-configuration frame configuration set-frame-size-p)))) |
| 1149 | 390 |
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391 (defun really-set-window-configuration (frame configuration set-frame-size-p) |
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392 "Set the window configuration CONFIGURATION on live frame FRAME. |
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393 If SET-FRAME-SIZE-P is true, the frame size is also restored. |
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394 Return alist mapping old windows to new windows." |
| 1149 | 395 ;; avoid potential temporary problems |
| 396 (setq window-min-width 0) | |
| 397 (setq window-min-height 0) | |
| 398 (setq minibuffer-scroll-window nil) | |
| 399 | |
| 400 (frame-reduce-to-one-window frame) | |
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401 (if set-frame-size-p |
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402 (set-window-configuration-frame-size configuration)) |
| 2888 | 403 |
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404 ;; avoid setting these if they're already up-to-date |
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405 ;; This also avoids potential inaccuracies in these settings --Mike |
| 3646 | 406 (when window-configuration-includes-position |
| 407 (let ((left (window-configuration-frame-left configuration)) | |
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408 (top (window-configuration-frame-top configuration))) |
| 3646 | 409 (if (not (equal left (frame-property frame 'left))) |
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410 (set-frame-property frame 'left left)) |
| 3646 | 411 (if (not (equal top (frame-property frame 'top))) |
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412 (set-frame-property frame 'top top)))) |
| 1149 | 413 |
| 414 ;; these may have changed because of the delete | |
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415 (set-window-pixel-height (minibuffer-window frame) |
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416 (window-configuration-minibuffer-pixel-height configuration)) |
| 1149 | 417 |
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418 ;; avoid that `set-window-point' will set the buffer's point for |
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419 ;; the selected window |
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420 (select-window (minibuffer-window frame)) |
| 1149 | 421 |
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422 (let ((window-configuration-current-window nil) |
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423 (mapping (list nil))) ; poor man's box |
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424 |
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425 (declare (special window-configuration-current-window)) |
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426 (restore-saved-window configuration |
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427 (frame-root-window frame) |
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428 (window-configuration-saved-root-window configuration) |
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429 'vertical |
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430 mapping) |
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431 (if window-configuration-current-window |
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432 (select-window window-configuration-current-window)) |
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433 |
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434 (setq window-min-width (window-configuration-min-width configuration)) |
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435 (setq window-min-height (window-configuration-min-height configuration)) |
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436 |
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437 (let ((buffer (window-configuration-current-buffer configuration))) |
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438 (if (buffer-live-p buffer) |
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439 (set-buffer buffer) |
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440 (set-buffer (car (buffer-list))))) |
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441 ; this resets the window configuration so that the frame is filled |
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442 (if (not set-frame-size-p) |
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443 (set-frame-pixel-size frame (frame-pixel-width frame) (frame-pixel-height frame))) |
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444 (car mapping))) |
| 1149 | 445 |
| 446 (defun set-window-configuration-frame-size (configuration) | |
| 447 "Restore the frame size of a window configuration." | |
| 448 (set-frame-pixel-size | |
| 449 (window-configuration-frame configuration) | |
| 450 (window-configuration-frame-pixel-width configuration) | |
| 451 (window-configuration-frame-pixel-height configuration))) | |
| 452 | |
| 453 (defun frame-reduce-to-one-window (frame) | |
| 454 "Delete all windows except the minibuffer and one other in FRAME." | |
| 455 (let* ((root-window (frame-root-window frame)) | |
| 456 (combination-start (or (window-first-hchild root-window) | |
| 457 (window-first-vchild root-window)))) | |
| 458 (if combination-start | |
| 459 (window-reduce-to-one combination-start)))) | |
| 460 | |
| 1230 | 461 ;; Note that simply using `delete-other-windows' causes obscure |
| 462 ;; breakage. --Mike | |
| 463 | |
| 1149 | 464 (defun window-reduce-to-one (window) |
| 465 "Make sure only one subwindow of WINDOW is left." | |
| 1230 | 466 (let ((window (window-next-child window))) |
| 467 (while window | |
| 468 (if (window-live-p window) | |
| 469 (let ((next (window-next-child window))) | |
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470 (real-delete-window window) |
| 1230 | 471 (setq window next))))) |
| 472 (cond | |
| 473 ((window-first-hchild window) | |
| 474 (window-reduce-to-one (window-first-hchild window))) | |
| 475 ((window-first-vchild window) | |
| 476 (window-reduce-to-one (window-first-vchild window))))) | |
| 1149 | 477 |
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478 (defun restore-saved-window (configuration window saved-window direction mapping) |
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479 "Within CONFIGURATION, restore WINDOW to the state of SAVED-WINDOW. |
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480 MAPPING is a one-element list whose element is an old-window-to-new-window |
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481 mapping, which this function will extend." |
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482 (if (not (eq (saved-window-window saved-window) window)) |
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483 (rplaca mapping |
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484 (cons (cons (saved-window-window saved-window) window) |
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485 (car mapping)))) |
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486 (cond |
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487 ((and (saved-window-next-child saved-window) |
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488 (not (saved-window-minibufferp (saved-window-next-child saved-window)))) |
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489 (cond ((eq direction 'vertical) |
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490 (real-split-window window nil nil)) |
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491 ((eq direction 'horizontal) |
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492 (real-split-window window nil t))) |
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493 (if (not (saved-window-minibufferp saved-window)) |
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494 (restore-saved-window-parameters configuration window saved-window)) |
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495 (restore-saved-window configuration |
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496 (window-next-child window) |
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497 (saved-window-next-child saved-window) |
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498 direction |
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499 mapping)) |
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500 ((not (saved-window-minibufferp saved-window)) |
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501 (restore-saved-window-parameters configuration window saved-window))) |
| 1149 | 502 |
| 1576 | 503 (if (saved-window-first-hchild saved-window) |
| 504 (restore-saved-window configuration | |
| 505 window | |
| 506 (saved-window-first-hchild saved-window) | |
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507 'horizontal |
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508 mapping)) |
| 1576 | 509 (if (saved-window-first-vchild saved-window) |
| 510 (restore-saved-window configuration | |
| 511 window | |
| 512 (saved-window-first-vchild saved-window) | |
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513 'vertical |
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514 mapping))) |
| 1149 | 515 |
| 516 (defun restore-saved-window-parameters (configuration window saved-window) | |
| 517 "Restore the window parameters stored in SAVED-WINDOW on WINDOW." | |
| 1261 | 518 (declare (special window-configuration-current-window)) |
| 1149 | 519 (let ((buffer (saved-window-buffer saved-window))) |
| 520 (if (and buffer (buffer-live-p buffer)) | |
| 521 (progn | |
| 522 (set-window-buffer window | |
| 523 (saved-window-buffer saved-window)) | |
| 524 (set-window-start window | |
| 1161 | 525 (marker-position (saved-window-start-marker saved-window)) |
| 526 t) | |
| 4136 | 527 (if (markerp (saved-window-point-marker saved-window)) |
| 528 (set-window-point window | |
| 529 (marker-position (saved-window-point-marker saved-window)))) | |
| 1149 | 530 (set-marker (mark-marker t buffer) |
| 531 (marker-position (saved-window-mark-marker saved-window)) | |
| 532 buffer) | |
| 533 (if (not (eq buffer (window-configuration-current-buffer configuration))) | |
| 534 (goto-char (window-point window) buffer))))) | |
| 535 | |
| 536 (if (and (not (saved-window-first-hchild saved-window)) | |
| 537 (not (saved-window-first-vchild saved-window))) | |
| 538 ;; only set size for non-container windows | |
| 539 (progn | |
| 540 ;; If this is the root window, it may be the only window. | |
| 541 ;; Because of mismatches between actual and reported frame | |
| 542 ;; size, it may not let us actually set the size of the root | |
| 543 ;; window to what we want. --Mike | |
| 544 (if (not (eq window (frame-root-window (window-frame window)))) | |
| 545 (progn | |
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546 (set-window-pixel-width window |
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547 (saved-window-pixel-width saved-window)) |
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548 (set-window-pixel-height window |
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549 (saved-window-pixel-height saved-window)))) |
| 1149 | 550 (set-window-hscroll window (saved-window-hscroll saved-window)) |
| 551 (set-modeline-hscroll window | |
| 552 (saved-window-modeline-hscroll saved-window)) | |
| 553 (set-window-dedicated-p window (saved-window-dedicatedp saved-window)))) | |
| 554 | |
| 555 (if (saved-window-currentp saved-window) | |
| 556 (setq window-configuration-current-window window)) | |
| 557 (if (saved-window-minibuffer-scrollp saved-window) | |
| 558 (setq minibuffer-scroll-window window))) | |
| 559 | |
| 560 (defun saved-window-pixel-width (saved-window) | |
| 561 "Compute the pixel width of SAVED-WINDOW." | |
| 562 (- (saved-window-pixel-right saved-window) | |
| 563 (saved-window-pixel-left saved-window))) | |
| 564 | |
| 565 (defun saved-window-pixel-height (saved-window) | |
| 566 "Compute the pixel height of SAVED-WINDOW." | |
| 567 (- (saved-window-pixel-bottom saved-window) | |
| 568 (saved-window-pixel-top saved-window))) | |
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569 |
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570 (defun set-window-pixel-width (window width) |
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571 "Set the pixel width of WINDOW." |
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572 (enlarge-window-pixels (- width (window-pixel-width window)) t window)) |
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573 |
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574 (defun set-window-pixel-height (window height) |
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575 "Set the pixel height of WINDOW." |
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576 (enlarge-window-pixels (- height (window-pixel-height window)) nil window)) |
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577 |
| 428 | 578 |
| 579 ;; The window-config stack is stored as a list in frame property | |
| 580 ;; 'window-config-stack, with the most recent element at the front. | |
| 581 ;; When you pop off an element, the popped off element gets put at the | |
| 582 ;; front of frame property 'window-config-unpop-stack, so you can | |
| 583 ;; retrieve it using unpop-window-configuration. | |
| 584 | |
| 585 (defcustom window-config-stack-max 16 | |
| 586 "*Maximum size of window configuration stack. | |
| 587 Start discarding off end if it gets this big." | |
| 588 :type 'integer | |
| 589 :group 'windows) | |
| 590 | |
| 591 (defun window-config-stack (&optional frame) | |
| 592 (or frame (setq frame (selected-frame))) | |
| 593 (let ((stack (frame-property frame 'window-config-stack))) | |
| 594 (if stack | |
| 595 (set-undoable-stack-max stack window-config-stack-max) | |
| 596 (progn | |
| 597 (setq stack (make-undoable-stack window-config-stack-max)) | |
| 598 (set-frame-property frame 'window-config-stack stack))) | |
| 599 stack)) | |
| 600 | |
| 601 (defun push-window-configuration (&optional config) | |
| 602 "Push the current window configuration onto the window-config stack. | |
| 603 If CONFIG is specified, push it instead of the current window configuration. | |
| 604 Each frame has its own window-config stack." | |
| 605 (interactive) | |
| 606 (let ((wc (or config (current-window-configuration))) | |
| 607 (stack (window-config-stack))) | |
|
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608 (if (or (eql 0 (undoable-stack-a-length stack)) |
| 428 | 609 (not (equal (undoable-stack-a-top stack) wc))) |
| 610 (undoable-stack-push stack wc)))) | |
| 611 | |
| 612 (defun pop-window-configuration () | |
| 613 "Pop the top window configuration off the window-config stack and set it. | |
| 614 Before setting the new window configuration, the current window configuration | |
| 615 is pushed onto the \"unpop\" stack. | |
| 616 `unpop-window-configuration' undoes what this function does. | |
| 617 Each frame has its own window-config and \"unpop\" stack." | |
| 618 (interactive) | |
| 619 (let ((stack (window-config-stack)) | |
| 620 (wc (current-window-configuration)) | |
| 621 popped) | |
| 622 (condition-case nil | |
| 623 (progn | |
| 624 (setq popped (undoable-stack-pop stack)) | |
| 625 (while (equal popped wc) | |
| 626 (setq popped (undoable-stack-pop stack))) | |
| 627 (undoable-stack-push stack wc) | |
| 628 (undoable-stack-undo stack) | |
| 629 (set-window-configuration popped) | |
| 630 popped) | |
| 631 (trunc-stack-bottom | |
| 632 (error "Bottom of window config stack"))))) | |
| 633 | |
| 634 (defun unpop-window-configuration () | |
| 635 "Undo the effect of the most recent `pop-window-configuration'. | |
| 636 This does exactly the inverse of what `pop-window-configuration' does: | |
| 637 i.e. it pops a window configuration off of the \"unpop\" stack and | |
| 638 pushes the current window configuration onto the window-config stack. | |
| 639 Each frame has its own window-config and \"unpop\" stack." | |
| 640 (interactive) | |
| 641 (let ((stack (window-config-stack)) | |
| 642 (wc (current-window-configuration)) | |
| 643 popped) | |
| 644 (condition-case nil | |
| 645 (progn | |
| 646 (setq popped | |
| 647 (progn | |
| 648 (undoable-stack-redo stack) | |
| 649 (undoable-stack-pop stack))) | |
| 650 (while (equal popped wc) | |
| 651 (setq popped | |
| 652 (progn | |
| 653 (undoable-stack-redo stack) | |
| 654 (undoable-stack-pop stack)))) | |
| 655 (undoable-stack-push stack wc) | |
| 656 (set-window-configuration popped) | |
| 657 popped) | |
| 658 (trunc-stack-bottom | |
| 659 (error "Top of window config stack"))))) | |
| 660 | |
| 661 | |
| 662 ;;;;;;;;;;;;; display-buffer, moved here from C. Hallelujah. | |
| 663 | |
| 442 | 664 (make-variable-buffer-local '__buffer-dedicated-frame) |
| 665 | |
| 666 (defun buffer-dedicated-frame (&optional buffer) | |
| 667 "Return the frame dedicated to this BUFFER, or nil if there is none. | |
| 668 No argument or nil as argument means use current buffer as BUFFER." | |
| 669 (let ((buffer (decode-buffer buffer))) | |
| 670 (let ((frame (symbol-value-in-buffer '__buffer-dedicated-frame buffer))) | |
| 671 ;; XEmacs addition: if the frame is dead, silently make it go away. | |
| 672 (when (and (framep frame) (not (frame-live-p frame))) | |
| 673 (with-current-buffer buffer | |
| 674 (setq __buffer-dedicated-frame nil)) | |
| 675 (setq frame nil)) | |
| 676 frame))) | |
| 677 | |
| 678 (defun set-buffer-dedicated-frame (buffer frame) | |
| 679 "For this BUFFER, set the FRAME dedicated to it. | |
| 680 FRAME must be a frame or nil." | |
| 681 (let ((buffer (decode-buffer buffer))) | |
| 682 (and frame | |
| 683 (check-argument-type #'frame-live-p frame)) | |
| 684 (with-current-buffer buffer | |
| 685 (setq __buffer-dedicated-frame frame)))) | |
| 686 | |
| 428 | 687 (defvar display-buffer-function nil |
| 688 "If non-nil, function to call to handle `display-buffer'. | |
| 903 | 689 It will receive four args: the same as those to `display-buffer'.") |
| 428 | 690 |
| 691 (defvar pre-display-buffer-function nil | |
| 692 "If non-nil, function that will be called from `display-buffer' | |
| 903 | 693 as the first action. It will receive four args: the same as those |
| 428 | 694 to `display-buffer'. |
| 695 This function may be used to select an appropriate frame for the buffer, | |
| 696 for example. See also the variable `display-buffer-function', which may | |
| 697 be used to completely replace the `display-buffer' function. | |
| 698 If the return value of this function is non-nil, it should be a frame, | |
| 699 and that frame will be used to display the buffer.") | |
| 700 | |
| 701 (defcustom pop-up-frames nil | |
| 702 "*Non-nil means `display-buffer' should make a separate frame." | |
| 703 :type 'boolean | |
| 704 :group 'frames) | |
| 705 | |
| 706 (defvar pop-up-frame-function nil | |
| 707 "Function to call to handle automatic new frame creation. | |
| 708 It is called with no arguments and should return a newly created frame. | |
| 709 | |
| 710 A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
| 711 where `pop-up-frame-alist' would hold the default frame parameters.") | |
| 712 | |
| 713 (defcustom special-display-buffer-names nil | |
| 714 "*List of buffer names that should have their own special frames. | |
| 715 Displaying a buffer whose name is in this list makes a special frame for it | |
| 716 using `special-display-function'. | |
| 717 | |
| 718 An element of the list can be a cons cell instead of just a string. | |
| 719 Then the car should be a buffer name, and the cdr specifies frame | |
| 720 parameters for creating the frame for that buffer. | |
| 721 More precisely, the cdr is passed as the second argument to | |
| 722 the function found in `special-display-function', when making that frame. | |
| 723 See also `special-display-regexps'." | |
| 724 :type '(repeat (choice :value "" | |
| 725 (string :tag "Name") | |
| 726 (cons :menu-tag "Properties" | |
| 727 :value ("" . nil) | |
| 728 (string :tag "Name") | |
| 729 (repeat :tag "Properties" | |
| 730 (group :inline t | |
| 731 (symbol :tag "Property") | |
| 732 (sexp :tag "Value")))))) | |
| 733 :group 'frames) | |
| 734 | |
| 735 (defcustom special-display-regexps nil | |
| 736 "*List of regexps saying which buffers should have their own special frames. | |
| 737 If a buffer name matches one of these regexps, it gets its own frame. | |
| 738 Displaying a buffer whose name is in this list makes a special frame for it | |
| 739 using `special-display-function'. | |
| 740 | |
| 741 An element of the list can be a cons cell instead of just a string. | |
| 742 Then the car should be the regexp, and the cdr specifies frame | |
| 743 parameters for creating the frame for buffers that match. | |
| 744 More precisely, the cdr is passed as the second argument to | |
| 745 the function found in `special-display-function', when making that frame. | |
| 746 See also `special-display-buffer-names'." | |
| 747 :type '(repeat (choice :value "" | |
| 748 regexp | |
| 749 (cons :menu-tag "Properties" | |
| 750 :value ("" . nil) | |
| 751 regexp | |
| 752 (repeat :tag "Properties" | |
| 753 (group :inline t | |
| 754 (symbol :tag "Property") | |
| 755 (sexp :tag "Value")))))) | |
| 756 :group 'frames) | |
| 757 | |
| 758 (defvar special-display-function nil | |
| 759 "Function to call to make a new frame for a special buffer. | |
| 760 It is called with two arguments, the buffer and optional buffer specific | |
| 761 data, and should return a window displaying that buffer. | |
| 762 The default value makes a separate frame for the buffer, | |
| 763 using `special-display-frame-alist' to specify the frame parameters. | |
| 764 | |
| 765 A buffer is special if its is listed in `special-display-buffer-names' | |
| 766 or matches a regexp in `special-display-regexps'.") | |
| 767 | |
| 768 (defcustom same-window-buffer-names nil | |
| 769 "*List of buffer names that should appear in the selected window. | |
| 770 Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
| 771 switches to it in the selected window, rather than making it appear | |
| 772 in some other window. | |
| 773 | |
| 774 An element of the list can be a cons cell instead of just a string. | |
| 775 Then the car must be a string, which specifies the buffer name. | |
| 776 This is for compatibility with `special-display-buffer-names'; | |
| 777 the cdr of the cons cell is ignored. | |
| 778 | |
| 779 See also `same-window-regexps'." | |
| 780 :type '(repeat (string :tag "Name")) | |
| 781 :group 'windows) | |
| 782 | |
| 783 (defcustom same-window-regexps nil | |
| 784 "*List of regexps saying which buffers should appear in the selected window. | |
| 785 If a buffer name matches one of these regexps, then displaying it | |
| 786 using `display-buffer' or `pop-to-buffer' switches to it | |
| 787 in the selected window, rather than making it appear in some other window. | |
| 788 | |
| 789 An element of the list can be a cons cell instead of just a string. | |
| 790 Then the car must be a string, which specifies the buffer name. | |
| 791 This is for compatibility with `special-display-buffer-names'; | |
| 792 the cdr of the cons cell is ignored. | |
| 793 | |
| 794 See also `same-window-buffer-names'." | |
| 795 :type '(repeat regexp) | |
| 796 :group 'windows) | |
| 797 | |
| 798 (defcustom pop-up-windows t | |
| 799 "*Non-nil means display-buffer should make new windows." | |
| 800 :type 'boolean | |
| 801 :group 'windows) | |
| 802 | |
| 803 (defcustom split-height-threshold 500 | |
| 804 "*display-buffer would prefer to split the largest window if this large. | |
| 805 If there is only one window, it is split regardless of this value." | |
| 806 :type 'integer | |
| 807 :group 'windows) | |
| 808 | |
| 809 (defcustom split-width-threshold 500 | |
| 810 "*display-buffer would prefer to split the largest window if this large. | |
| 811 If there is only one window, it is split regardless of this value." | |
| 812 :type 'integer | |
| 813 :group 'windows) | |
| 814 | |
| 815 ;; Can you believe that all of this crap was formerly in C? | |
| 816 ;; Praise Jesus that it's not there any more. | |
| 817 | |
| 903 | 818 (defun display-buffer (buffer &optional not-this-window-p override-frame |
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819 shrink-to-fit) |
| 428 | 820 "Make BUFFER appear in some window on the current frame, but don't select it. |
| 821 BUFFER can be a buffer or a buffer name. | |
| 822 If BUFFER is shown already in some window in the current frame, | |
| 823 just uses that one, unless the window is the selected window and | |
| 824 NOT-THIS-WINDOW-P is non-nil (interactively, with prefix arg). | |
| 825 | |
| 826 If BUFFER has a dedicated frame, display on that frame instead of | |
| 827 the current frame, unless OVERRIDE-FRAME is non-nil. | |
| 828 | |
| 829 If OVERRIDE-FRAME is non-nil, display on that frame instead of | |
| 830 the current frame (or the dedicated frame). | |
| 831 | |
| 903 | 832 If SHRINK-TO-FIT is non-nil and splitting the window is appropriate, give |
| 833 the new buffer less than half the space if it is small enough to fit. | |
| 834 | |
| 428 | 835 If `pop-up-windows' is non-nil, always use the |
| 836 current frame and create a new window regardless of whether the | |
| 837 buffer has a dedicated frame, and regardless of whether | |
| 838 OVERRIDE-FRAME was specified. | |
| 839 | |
| 840 If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
| 841 | |
| 2590 | 842 If the buffer name is a member of the `same-window-buffer-names' list, |
| 843 or matches one of the `same-window-regexps' expressions, display the | |
| 844 buffer in the currently selected window. | |
| 845 | |
| 428 | 846 Returns the window displaying BUFFER." |
| 847 (interactive "BDisplay buffer:\nP") | |
| 848 | |
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849 (let ((wconfig (current-window-configuration))) |
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850 (prog1 |
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851 ;; We just simulate a `return' in C. This function is way |
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852 ;; ugly and does `returns' all over the place and there's |
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853 ;; no sense in trying to rewrite it to be more Lispy. |
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854 (block nil |
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855 (labels |
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856 ((display-buffer-1 (window) |
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857 ;; Deiconify the frame containing the window WINDOW, then |
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858 ;; return WINDOW. |
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859 (if (frame-iconified-p (window-frame window)) |
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860 (make-frame-visible (window-frame window))) |
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861 window)) |
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862 (let (window old-frame target-frame explicit-frame shrink-it) |
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863 (setq old-frame (or (last-nonminibuf-frame) (selected-frame))) |
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864 (setq buffer (get-buffer buffer)) |
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865 (check-argument-type 'bufferp buffer) |
| 428 | 866 |
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867 (setq explicit-frame |
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868 (if pre-display-buffer-function |
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869 (funcall pre-display-buffer-function buffer |
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870 not-this-window-p |
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871 override-frame |
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872 shrink-to-fit))) |
| 428 | 873 |
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874 ;; Give the user the ability to completely reimplement |
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875 ;; this function via the `display-buffer-function'. |
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876 (if display-buffer-function |
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877 (return (funcall display-buffer-function buffer |
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878 not-this-window-p |
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879 override-frame |
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880 shrink-to-fit))) |
| 428 | 881 |
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882 ;; If the buffer has a dedicated frame, that takes |
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883 ;; precedence over the current frame, and over what the |
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884 ;; pre-display-buffer-function did. |
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885 (let ((dedi (buffer-dedicated-frame buffer))) |
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886 (if (frame-live-p dedi) (setq explicit-frame dedi))) |
| 428 | 887 |
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888 ;; if override-frame is supplied, that takes precedence over |
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889 ;; everything. This is gonna look bad if the |
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890 ;; pre-display-buffer-function raised some other frame already. |
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891 (if override-frame |
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892 (progn |
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893 (check-argument-type 'frame-live-p override-frame) |
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894 (setq explicit-frame override-frame))) |
| 428 | 895 |
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896 (setq target-frame |
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897 (or explicit-frame |
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898 (last-nonminibuf-frame) |
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899 (selected-frame))) |
| 428 | 900 |
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901 ;; If we have switched frames, then set not-this-window-p to |
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902 ;; false. Switching frames means that selected-window is no |
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903 ;; longer the same as it was on entry -- it's the |
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904 ;; selected-window of target_frame instead of old_frame, so |
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905 ;; it's a fine candidate for display. |
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906 (if (not (eq old-frame target-frame)) |
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907 (setq not-this-window-p nil)) |
| 428 | 908 |
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909 ;; if it's in the selected window, and that's ok, then we're |
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910 ;; done. |
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911 (if (and (not not-this-window-p) |
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912 (eq buffer (window-buffer (selected-window)))) |
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913 (return (display-buffer-1 (selected-window)))) |
| 428 | 914 |
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915 ;; See if the user has specified this buffer should |
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916 ;; appear in the selected window. |
| 428 | 917 |
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918 (if not-this-window-p |
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919 nil |
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920 (if (or (member (buffer-name buffer) same-window-buffer-names) |
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921 (assoc (buffer-name buffer) same-window-buffer-names)) |
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922 (progn |
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923 (switch-to-buffer buffer) |
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924 (return (display-buffer-1 (selected-window))))) |
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925 |
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926 (let ((tem same-window-regexps)) |
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927 (while tem |
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928 (let ((car (car tem))) |
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929 (if (or |
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|
930 (and (stringp car) |
|
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|
931 (string-match car (buffer-name buffer))) |
|
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|
932 (and (consp car) (stringp (car car)) |
|
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|
933 (string-match (car car) (buffer-name buffer)))) |
|
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|
934 (progn |
|
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|
935 (switch-to-buffer buffer) |
|
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|
936 (return (display-buffer-1 (selected-window)))))) |
|
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|
937 (setq tem (cdr tem))))) |
| 428 | 938 |
|
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|
939 ;; If pop-up-frames, look for a window showing BUFFER |
|
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|
940 ;; on any visible or iconified frame. Otherwise search |
|
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|
941 ;; only the current frame. |
|
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|
942 (if (and (not explicit-frame) |
|
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|
943 (or pop-up-frames (not (last-nonminibuf-frame)))) |
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|
944 (setq target-frame 0)) |
| 428 | 945 |
|
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|
946 ;; Otherwise, find some window that it's already in, |
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|
947 ;; and return that, unless that window is the selected |
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|
948 ;; window and that isn't ok. What a contorted mess! |
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|
949 (setq window (or (if (not explicit-frame) |
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|
950 ;; search the selected frame |
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951 ;; first if the user didn't |
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|
952 ;; specify an explicit frame. |
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953 (get-buffer-window buffer nil)) |
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|
954 (get-buffer-window buffer target-frame))) |
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|
955 (if (and window |
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956 (or (not not-this-window-p) |
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957 (not (eq window (selected-window))))) |
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958 (return (display-buffer-1 window))) |
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959 ;; Certain buffer names get special handling. |
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960 (if special-display-function |
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|
961 (progn |
|
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|
962 (if (member (buffer-name buffer) |
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|
963 special-display-buffer-names) |
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|
964 (return (funcall special-display-function buffer))) |
| 428 | 965 |
|
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|
966 (let ((tem (assoc (buffer-name buffer) |
|
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|
967 special-display-buffer-names))) |
|
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|
968 (if tem |
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969 (return (funcall special-display-function |
|
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|
970 buffer (cdr tem))))) |
| 428 | 971 |
|
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|
972 (let ((tem special-display-regexps)) |
|
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|
973 (while tem |
|
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|
974 (let ((car (car tem))) |
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|
975 (if (and (stringp car) |
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|
976 (string-match car (buffer-name buffer))) |
|
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|
977 (return |
|
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|
978 (funcall special-display-function buffer))) |
|
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|
979 (if (and (consp car) |
|
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|
980 (stringp (car car)) |
|
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|
981 (string-match (car car) |
|
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|
982 (buffer-name buffer))) |
|
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|
983 (return (funcall special-display-function buffer |
|
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|
984 (cdr car))))) |
|
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|
985 (setq tem (cdr tem)))))) |
| 428 | 986 |
|
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|
987 ;; If there are no frames open that have more than a minibuffer, |
|
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|
988 ;; we need to create a new frame. |
|
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|
989 (if (or pop-up-frames |
|
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|
990 (null (last-nonminibuf-frame))) |
|
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|
991 (progn |
|
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|
992 (setq window (frame-selected-window |
|
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|
993 (funcall pop-up-frame-function))) |
|
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|
994 (set-window-buffer window buffer) |
|
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|
995 (return (display-buffer-1 window)))) |
| 428 | 996 |
|
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|
997 ;; Otherwise, make it be in some window, splitting if |
|
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|
998 ;; appropriate/possible. Do not split a window if we |
|
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|
999 ;; are displaying the buffer in a different frame than |
|
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|
1000 ;; that which was current when we were called. (It is |
|
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|
1001 ;; already in a different window by virtue of being in |
|
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|
1002 ;; another frame.) |
|
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|
1003 (if (or (and pop-up-windows (eq target-frame old-frame)) |
|
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|
1004 (eq 'only (frame-property (selected-frame) 'minibuffer)) |
|
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|
1005 ;; If the current frame is a special display frame, |
|
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|
1006 ;; don't try to reuse its windows. |
|
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|
1007 (window-dedicated-p |
|
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|
1008 (frame-root-window (selected-frame)))) |
|
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|
1009 (progn |
|
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|
1010 (if (eq 'only (frame-property (selected-frame) |
|
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|
1011 'minibuffer)) |
|
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|
1012 (setq target-frame (last-nonminibuf-frame))) |
| 428 | 1013 |
|
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|
1014 ;; Don't try to create a window if would get an error with |
|
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|
1015 ;; height. |
|
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|
1016 (if (< split-height-threshold (* 2 window-min-height)) |
|
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|
1017 (setq split-height-threshold (* 2 window-min-height))) |
| 428 | 1018 |
|
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|
1019 ;; Same with width. |
|
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|
1020 (if (< split-width-threshold (* 2 window-min-width)) |
|
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|
1021 (setq split-width-threshold (* 2 window-min-width))) |
| 428 | 1022 |
|
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|
1023 ;; If the frame we would try to split cannot be split, |
|
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|
1024 ;; try other frames. |
|
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|
1025 (if (frame-property (if (null target-frame) |
|
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|
1026 (selected-frame) |
|
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|
1027 (last-nonminibuf-frame)) |
|
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|
1028 'unsplittable) |
|
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|
1029 (setq window |
|
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|
1030 ;; Try visible frames first. |
|
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|
1031 (or (get-largest-window 'visible) |
|
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|
1032 ;; If that didn't work, try iconified frames. |
|
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|
1033 (get-largest-window 0) |
|
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|
1034 (get-largest-window t))) |
|
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diff
changeset
|
1035 (setq window (get-largest-window target-frame))) |
| 428 | 1036 |
|
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|
1037 ;; If we got a tall enough full-width window that |
|
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|
1038 ;; can be split, split it. |
|
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changeset
|
1039 (if (and window |
|
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|
1040 (not (frame-property (window-frame window) |
|
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|
1041 'unsplittable)) |
|
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|
1042 (>= (window-height window) split-height-threshold) |
|
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|
1043 (or (>= (window-width window) |
|
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changeset
|
1044 split-width-threshold) |
|
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|
1045 (and (window-leftmost-p window) |
|
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diff
changeset
|
1046 (window-rightmost-p window)))) |
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1047 (setq window (split-window window)) |
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1048 (let (upper other) |
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1049 (setq window (get-lru-window target-frame)) |
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1050 ;; If the LRU window is selected, and big enough, |
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1051 ;; and can be split, split it. |
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1052 (if (and window |
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1053 (not (frame-property (window-frame window) |
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1054 'unsplittable)) |
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1055 (or (eq window (selected-window)) |
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1056 (not (window-parent window))) |
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1057 (>= (window-height window) |
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1058 (* 2 window-min-height))) |
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1059 (setq window (split-window window))) |
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1060 ;; If get-lru-window returned nil, try other |
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1061 ;; approaches. Try visible frames first. |
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1062 (or window |
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1063 (setq window (or (get-largest-window 'visible) |
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1064 ;; If that didn't work, try |
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1065 ;; iconified frames. |
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1066 (get-largest-window 0) |
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1067 ;; Try invisible frames. |
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1068 (get-largest-window t) |
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1069 ;; As a last resort, make |
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1070 ;; a new frame. |
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1071 (frame-selected-window |
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1072 (funcall |
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1073 pop-up-frame-function))))) |
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1074 ;; If window appears above or below another, |
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1075 ;; even out their heights. |
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1076 (if (window-previous-child window) |
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1077 (setq other (window-previous-child window) |
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1078 upper other)) |
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1079 (if (window-next-child window) |
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1080 (setq other (window-next-child window) |
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1081 upper window)) |
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1082 ;; Check that OTHER and WINDOW are vertically arrayed. |
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1083 (if (and other |
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1084 (not (= (nth 1 (window-pixel-edges other)) |
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1085 (nth 1 (window-pixel-edges window)))) |
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1086 (> (window-pixel-height other) |
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1087 (window-pixel-height window))) |
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1088 (enlarge-window (- (/ (+ (window-height other) |
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1089 (window-height window)) |
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1090 2) |
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1091 (window-height upper)) |
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1092 nil upper)) |
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1093 ;; Klaus Berndl <klaus.berndl@sdm.de>: Only in |
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1094 ;; this situation we shrink-to-fit but we can do |
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1095 ;; this first after we have displayed buffer in |
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1096 ;; window (s.b. (set-window-buffer window buffer)) |
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1097 (setq shrink-it shrink-to-fit)))) |
| 428 | 1098 |
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1099 (setq window (get-lru-window target-frame))) |
| 428 | 1100 |
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1101 ;; Bring the window's previous buffer to the top of the |
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1102 ;; MRU chain. |
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1103 (if (window-buffer window) |
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1104 (save-excursion |
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1105 (save-selected-window |
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1106 (select-window window) |
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1107 (record-buffer (window-buffer window))))) |
| 428 | 1108 |
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1109 (set-window-buffer window buffer) |
| 1669 | 1110 |
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1111 ;; Now window's previous buffer has been brought to the |
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1112 ;; top of the MRU chain and window displays buffer - |
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1113 ;; now we can shrink-to-fit if necessary |
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1114 (if shrink-it |
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1115 (shrink-window-if-larger-than-buffer window)) |
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1116 (display-buffer-1 window)))) ;; End of prog1's 1th form. |
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1117 (or (equal wconfig (current-window-configuration)) |
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1118 (push-window-configuration wconfig))))) |
| 428 | 1119 |
| 1120 ;;; window-xemacs.el ends here |