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428
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1 ;;; list-mode.el --- Major mode for buffers containing lists of items
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2
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3 ;; Copyright (C) 1992-4, 1997 Free Software Foundation, Inc.
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442
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4 ;; Copyright (C) 1996, 2000 Ben Wing.
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428
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5
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6 ;; Maintainer: XEmacs Development Team
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7 ;; Keywords: extensions, dumped
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8
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9 ;; This file is part of XEmacs.
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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
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the
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23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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24 ;; Boston, MA 02111-1307, USA.
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25
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26 ;;; Synched up with: Not synched
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27
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28 ;;; Commentary:
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29
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30 ;; This file is dumped with XEmacs.
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31
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32 ;; Cleanup, merging with FSF by Ben Wing, January 1996
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33
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34 ;;; Code:
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35
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36 (defvar list-mode-extent nil)
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37 (make-variable-buffer-local 'list-mode-extent)
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38
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39 (defvar list-mode-map nil
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40 "Local map for buffers containing lists of items.")
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41 (or list-mode-map
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42 (let ((map (setq list-mode-map (make-sparse-keymap 'list-mode-map))))
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43 (suppress-keymap map)
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44 (define-key map 'button2up 'list-mode-item-mouse-selected)
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45 (define-key map 'button2 'undefined)
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46 (define-key map "\C-m" 'list-mode-item-keyboard-selected)
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47 ;;
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48 ;; The following calls to `substitute-key-definition' losed because
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49 ;; they were based on an incorrect assumption that `forward-char' and
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50 ;; `backward-char' are bound to keys in the global map. This might not
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51 ;; be the case if a user binds motion keys to different functions,
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52 ;; and was not actually the case since 20.5 beta 28 or around.
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53 ;;
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54 ;; (substitute-key-definition 'forward-char 'next-list-mode-item map
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55 ;; global-map)
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56 ;; (substitute-key-definition 'backward-char 'previous-list-mode-item map
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57 ;; global-map)
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58 ;;
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59 ;; We bind standard keys to motion commands instead.
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60 ;;
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61 (dolist (key '(kp-right right (control ?f)))
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62 (define-key map key 'next-list-mode-item))
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63 (dolist (key '(kp-left left (control ?b)))
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64 (define-key map key 'previous-list-mode-item))))
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65
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442
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66 ;; #### We make list-mode-hook, as well as completion-setup-hook and
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67 ;; minibuffer-setup-hook, permanent-local so that it's possible to create
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68 ;; buffers in these modes and then set up some buffer-specific
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69 ;; customizations without resorting to awful kludges. (The problem here
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70 ;; is that when you switch a buffer into a mode, reset-buffer is usually
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71 ;; called, which destroys all buffer-local settings that you carefully
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72 ;; tried to set up when you created the buffer. Therefore, the only way
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73 ;; to set these variables is to use the setup hooks -- but if they are
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74 ;; not declared permanent local, then any local hook functions that you
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75 ;; put on them (which is exactly what you want to do) also get removed,
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76 ;; so you would have to resort to putting a global hook function on the
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77 ;; setup hook, and then making sure it gets removed later. I actually
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78 ;; added some support for doing this with one-shot hooks, but this is
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79 ;; clearly not the correct way to do things, and it fails in some cases,
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80 ;; particularly when the buffer gets put into the mode more than once,
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81 ;; which typically happens with completion buffers, for example.) In
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82 ;; fact, all setup hooks should be made permanent local, but I didn't
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83 ;; feel like making a global change like this quite yet. The proper way
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84 ;; to do it would be to declare new def-style forms, such as defhook and
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85 ;; define-local-setup-hook, which are used to initialize hooks in place
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86 ;; of the current generic defvars. --ben
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87
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88 (put 'list-mode-hook 'permanent-local t)
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89 (defvar list-mode-hook nil
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90 "Normal hook run when entering List mode.")
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91
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428
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92 (defun list-mode ()
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93 "Major mode for buffer containing lists of items."
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94 (interactive)
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95 (kill-all-local-variables)
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96 (use-local-map list-mode-map)
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97 (setq mode-name "List")
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98 (setq major-mode 'list-mode)
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442
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99 (add-local-hook 'post-command-hook 'set-list-mode-extent)
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100 (add-local-hook 'pre-command-hook 'list-mode-extent-pre-hook)
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101 (set (make-local-variable 'next-line-add-newlines) nil)
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428
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102 (setq list-mode-extent nil)
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103 ;; It is visually disconcerting to have the text cursor disappear within list
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104 ;; buffers, especially when moving from window to window, so leave it
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105 ;; visible. -- Bob Weiner, 06/20/1999
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106 ; (set-specifier text-cursor-visible-p nil (current-buffer))
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107 (setq buffer-read-only t)
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108 (goto-char (point-min))
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109 (run-hooks 'list-mode-hook))
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110
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111 ;; List mode is suitable only for specially formatted data.
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112 (put 'list-mode 'mode-class 'special)
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113
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114 (defvar list-mode-extent-old-point nil
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115 "The value of point when pre-command-hook is called.
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116 Used to determine the direction of motion.")
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117 (make-variable-buffer-local 'list-mode-extent-old-point)
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118
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119 (defun list-mode-extent-pre-hook ()
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120 (setq list-mode-extent-old-point (point))
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121 ;(setq atomic-extent-goto-char-p nil)
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122 )
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123
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124 (defun set-list-mode-extent ()
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125 "Move to the closest list item and set up the extent for it.
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126 This is called from `post-command-hook'."
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127 (cond ((get-char-property (point) 'list-mode-item))
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128 ((and (> (point) (point-min))
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129 (get-char-property (1- (point)) 'list-mode-item))
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130 (goto-char (1- (point))))
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131 (t
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132 (let ((pos (point))
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133 dirflag)
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134 ;this fucks things up more than it helps.
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135 ;atomic-extent-goto-char-p as currently defined is all broken,
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136 ;since it will be triggered if the command *ever* runs goto-char!
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137 ;(if atomic-extent-goto-char-p
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138 ; (setq dirflag 1)
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139 (if (and list-mode-extent-old-point
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140 (> pos list-mode-extent-old-point))
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141 (setq dirflag 1)
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142 (setq dirflag -1))
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143 (next-list-mode-item dirflag)
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144 (or (get-char-property (point) 'list-mode-item)
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145 (next-list-mode-item (- dirflag))))))
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146 (or (and list-mode-extent
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147 (eq (current-buffer) (extent-object list-mode-extent)))
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148 (progn
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149 (setq list-mode-extent (make-extent nil nil (current-buffer)))
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150 (set-extent-face list-mode-extent 'list-mode-item-selected)))
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151 (let ((ex (extent-at (point) nil 'list-mode-item nil 'at)))
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152 (if ex
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153 (progn
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154 (set-extent-endpoints list-mode-extent
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155 (extent-start-position ex)
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156 (extent-end-position ex))
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157 (auto-show-make-region-visible (extent-start-position ex)
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158 (extent-end-position ex)))
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159 (detach-extent list-mode-extent))))
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160
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161 (defun previous-list-mode-item (n)
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162 "Move to the previous item in list-mode."
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163 (interactive "p")
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164 (next-list-mode-item (- n)))
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165
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166 (defun next-list-mode-item (n)
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167 "Move to the next item in list-mode.
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168 With prefix argument N, move N items (negative N means move backward)."
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169 (interactive "p")
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170 (while (and (> n 0) (not (eobp)))
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171 (let ((extent (extent-at (point) (current-buffer) 'list-mode-item))
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172 (end (point-max)))
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173 ;; If in a completion, move to the end of it.
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174 (if extent (goto-char (extent-end-position extent)))
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175 ;; Move to start of next one.
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176 (or (extent-at (point) (current-buffer) 'list-mode-item)
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177 (goto-char (next-single-property-change (point) 'list-mode-item
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178 nil end))))
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179 (setq n (1- n)))
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180 (while (and (< n 0) (not (bobp)))
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181 (let ((extent (extent-at (point) (current-buffer) 'list-mode-item))
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182 (end (point-min)))
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183 ;; If in a completion, move to the start of it.
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184 (if extent (goto-char (extent-start-position extent)))
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185 ;; Move to the start of that one.
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186 (if (setq extent (extent-at (point) (current-buffer) 'list-mode-item
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187 nil 'before))
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188 (goto-char (extent-start-position extent))
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189 (goto-char (previous-single-property-change
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190 (point) 'list-mode-item nil end))
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191 (if (setq extent (extent-at (point) (current-buffer) 'list-mode-item
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192 nil 'before))
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193 (goto-char (extent-start-position extent)))))
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194 (setq n (1+ n))))
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195
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196 (defun list-mode-item-selected-1 (extent event)
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197 (let ((func (extent-property extent 'list-mode-item-activate-callback))
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198 (user-data (extent-property extent 'list-mode-item-user-data)))
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199 (if func
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200 (funcall func event extent user-data))))
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201
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202 ;; we could make these two be just one function, but we want to be
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203 ;; able to refer to them in DOC strings.
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204
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205 (defun list-mode-item-keyboard-selected ()
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206 (interactive)
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207 (list-mode-item-selected-1 (extent-at (point) (current-buffer)
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208 'list-mode-item nil 'at)
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209 nil))
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210
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211 (defun list-mode-item-mouse-selected (event)
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212 (interactive "e")
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213 ;; Sometimes event-closest-point returns nil.
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214 ;; So beep instead of bombing.
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215 (let ((point (event-closest-point event)))
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216 (if point
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217 (list-mode-item-selected-1 (extent-at point
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218 (event-buffer event)
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219 'list-mode-item nil 'at)
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220 event)
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221 (ding))))
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222
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223 (defun add-list-mode-item (start end &optional buffer activate-callback
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224 user-data)
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225 "Add a new list item in list-mode, from START to END in BUFFER.
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226 BUFFER defaults to the current buffer.
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227 This works by creating an extent for the span of text in question.
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228 If ACTIVATE-CALLBACK is non-nil, it should be a function of three
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229 arguments (EVENT EXTENT USER-DATA) that will be called when button2
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230 is pressed on the extent. USER-DATA comes from the optional
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231 USER-DATA argument."
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232 (let ((extent (make-extent start end buffer)))
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233 (set-extent-property extent 'list-mode-item t)
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234 (set-extent-property extent 'start-open t)
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235 (if activate-callback
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236 (progn
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237 (set-extent-property extent 'mouse-face 'highlight)
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238 (set-extent-property extent 'list-mode-item-activate-callback
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239 activate-callback)
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240 (set-extent-property extent 'list-mode-item-user-data user-data)))
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241 extent))
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242
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243
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244 ;; Define the major mode for lists of completions.
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245
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246
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247 (defvar completion-highlight-first-word-only nil
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248 "*Completion will only highlight the first blank delimited word if t.
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249 If the variable in not t or nil, the string is taken as a regexp to match for end
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250 of highlight")
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251
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442
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252 ;; see comment at list-mode-hook.
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253 (put 'completion-setup-hook 'permanent-local t)
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428
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254 (defvar completion-setup-hook nil
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442
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255 "Normal hook run at the end of setting up the text of a completion buffer.
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256 When run, the completion buffer is the current buffer.")
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428
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257
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258 ; Unnecessary FSFmacs crock. We frob the extents directly in
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259 ; display-completion-list, so no "heuristics" like this are necessary.
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260 ;(defvar completion-fixup-function nil
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261 ; "A function to customize how completions are identified in completion lists.
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262 ;`completion-setup-function' calls this function with no arguments
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263 ;each time it has found what it thinks is one completion.
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264 ;Point is at the end of the completion in the completion list buffer.
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265 ;If this function moves point, it can alter the end of that completion.")
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266
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267 (defvar completion-default-help-string
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268 '(concat
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269 (if (device-on-window-system-p)
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270 (substitute-command-keys
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271 "Click \\<list-mode-map>\\[list-mode-item-mouse-selected] on a completion to select it.\n") "")
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272 (substitute-command-keys
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273 "Type \\<minibuffer-local-completion-map>\\[advertised-switch-to-completions] or \\[switch-to-completions] to move to this buffer, for keyboard selection.\n\n"))
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274 "Form the evaluate to get a help string for completion lists.
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275 This string is inserted at the beginning of the buffer.
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276 See `display-completion-list'.")
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277
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278 (defun display-completion-list (completions &rest cl-keys)
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279 "Display the list of completions, COMPLETIONS, using `standard-output'.
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280 Each element may be just a symbol or string or may be a list of two
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281 strings to be printed as if concatenated.
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282 Frob a mousable extent onto each completion. This extent has properties
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283 'mouse-face (so it highlights when the mouse passes over it) and
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284 'list-mode-item (so it can be located).
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285
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286 Keywords:
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287 :activate-callback (default is `default-choose-completion')
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288 See `add-list-mode-item'.
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289 :user-data
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290 Value passed to activation callback.
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291 :window-width
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292 If non-nil, width to use in displaying the list, instead of the
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293 actual window's width.
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442
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294 :window-height
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295 If non-nil, use no more than this many lines, and extend line width as
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296 necessary.
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428
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297 :help-string (default is the value of `completion-default-help-string')
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298 Form to evaluate to get a string to insert at the beginning of
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299 the completion list buffer. This is evaluated when that buffer
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300 is the current buffer and after it has been put into
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301 completion-list-mode.
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302 :reference-buffer (default is the current buffer)
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303 This specifies the value of `completion-reference-buffer' in
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304 the completion buffer. This specifies the buffer (normally a
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305 minibuffer) that `default-choose-completion' will insert the
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306 completion into.
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307
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308 At the end, run the normal hook `completion-setup-hook'.
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309 It can find the completion buffer in `standard-output'.
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310 If `completion-highlight-first-word-only' is non-nil, then only the start
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311 of the string is highlighted."
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312 ;; #### I18N3 should set standard-output to be (temporarily)
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313 ;; output-translating.
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314 (cl-parsing-keywords
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315 ((:activate-callback 'default-choose-completion)
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316 :user-data
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317 :reference-buffer
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318 (:help-string completion-default-help-string)
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319 (:completion-string "Possible completions are:")
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442
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320 :window-width
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321 :window-height)
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428
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322 ()
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323 (let ((old-buffer (current-buffer))
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324 (bufferp (bufferp standard-output)))
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325 (if bufferp
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326 (set-buffer standard-output))
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327 (if (null completions)
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328 (princ (gettext
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329 "There are no possible completions of what you have typed."))
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330 (let ((win-width
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331 (or cl-window-width
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332 (if bufferp
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333 ;; This needs fixing for the case of windows
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334 ;; that aren't the same width's the frame.
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335 ;; Sadly, the window it will appear in is not known
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336 ;; until after the text has been made.
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337
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338 ;; We have to use last-nonminibuf-frame here
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339 ;; and not selected-frame because if a
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340 ;; minibuffer-only frame is being used it will
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341 ;; be the selected-frame at the point this is
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342 ;; run. We keep the selected-frame call around
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343 ;; just in case.
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344 (frame-width (or (last-nonminibuf-frame)
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345 (selected-frame)))
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346 80))))
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347 (let ((count 0)
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442
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348 (max-width 0)
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349 old-max-width)
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428
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350 ;; Find longest completion
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351 (let ((tail completions))
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352 (while tail
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353 (let* ((elt (car tail))
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354 (len (cond ((stringp elt)
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355 (length elt))
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356 ((and (consp elt)
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357 (stringp (car elt))
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358 (stringp (car (cdr elt))))
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359 (+ (length (car elt))
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360 (length (car (cdr elt)))))
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361 (t
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362 (signal 'wrong-type-argument
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363 (list 'stringp elt))))))
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364 (if (> len max-width)
|
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365 (setq max-width len))
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366 (setq count (1+ count)
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367 tail (cdr tail)))))
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368
|
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369 (setq max-width (+ 2 max-width)) ; at least two chars between cols
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442
|
370 (setq old-max-width max-width)
|
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428
|
371 (let ((rows (let ((cols (min (/ win-width max-width) count)))
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372 (if (<= cols 1)
|
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373 count
|
|
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374 (progn
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375 ;; re-space the columns
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376 (setq max-width (/ win-width cols))
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377 (if (/= (% count cols) 0) ; want ceiling...
|
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378 (1+ (/ count cols))
|
|
|
379 (/ count cols)))))))
|
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442
|
380 (when
|
|
|
381 (and cl-window-height
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|
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382 (> rows cl-window-height))
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|
|
383 (setq max-width old-max-width)
|
|
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384 (setq rows cl-window-height))
|
|
|
385 (when (and (stringp cl-completion-string)
|
|
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386 (> (length cl-completion-string) 0))
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|
387 (princ (gettext cl-completion-string))
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|
|
388 (terpri))
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428
|
389 (let ((tail completions)
|
|
|
390 (r 0)
|
|
|
391 (regexp-string
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|
|
392 (if (eq t
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|
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393 completion-highlight-first-word-only)
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|
394 "[ \t]"
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395 completion-highlight-first-word-only)))
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|
396 (while (< r rows)
|
|
442
|
397 (and (> r 0) (terpri))
|
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428
|
398 (let ((indent 0)
|
|
|
399 (column 0)
|
|
|
400 (tail2 tail))
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|
|
401 (while tail2
|
|
|
402 (let ((elt (car tail2)))
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|
|
403 (if (/= indent 0)
|
|
|
404 (if bufferp
|
|
|
405 (indent-to indent 2)
|
|
|
406 (while (progn (write-char ?\ )
|
|
|
407 (setq column (1+ column))
|
|
|
408 (< column indent)))))
|
|
|
409 (setq indent (+ indent max-width))
|
|
|
410 (let ((start (point))
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|
|
411 end)
|
|
|
412 ;; Frob some mousable extents in there too!
|
|
|
413 (if (consp elt)
|
|
|
414 (progn
|
|
|
415 (princ (car elt))
|
|
|
416 (princ (car (cdr elt)))
|
|
|
417 (or bufferp
|
|
|
418 (setq column
|
|
|
419 (+ column
|
|
|
420 (length (car elt))
|
|
|
421 (length (car (cdr elt)))))))
|
|
|
422 (progn
|
|
|
423 (princ elt)
|
|
|
424 (or bufferp
|
|
|
425 (setq column (+ column (length
|
|
|
426 elt))))))
|
|
|
427 (add-list-mode-item
|
|
|
428 start
|
|
|
429 (progn
|
|
|
430 (setq end (point))
|
|
|
431 (or
|
|
|
432 (and completion-highlight-first-word-only
|
|
|
433 (goto-char start)
|
|
|
434 (re-search-forward regexp-string end t)
|
|
|
435 (match-beginning 0))
|
|
|
436 end))
|
|
|
437 nil cl-activate-callback cl-user-data)
|
|
|
438 (goto-char end)))
|
|
|
439 (setq tail2 (nthcdr rows tail2)))
|
|
|
440 (setq tail (cdr tail)
|
|
|
441 r (1+ r)))))))))
|
|
|
442 (if bufferp
|
|
|
443 (set-buffer old-buffer)))
|
|
|
444 (save-excursion
|
|
|
445 (let ((mainbuf (or cl-reference-buffer (current-buffer))))
|
|
|
446 (set-buffer standard-output)
|
|
|
447 (completion-list-mode)
|
|
|
448 (make-local-variable 'completion-reference-buffer)
|
|
|
449 (setq completion-reference-buffer mainbuf)
|
|
|
450 ;;; The value 0 is right in most cases, but not for file name completion.
|
|
|
451 ;;; so this has to be turned off.
|
|
|
452 ;;; (setq completion-base-size 0)
|
|
|
453 (goto-char (point-min))
|
|
|
454 (let ((buffer-read-only nil))
|
|
|
455 (insert (eval cl-help-string)))
|
|
|
456 ;; unnecessary FSFmacs crock
|
|
|
457 ;;(forward-line 1)
|
|
|
458 ;;(while (re-search-forward "[^ \t\n]+\\( [^ \t\n]+\\)*" nil t)
|
|
|
459 ;; (let ((beg (match-beginning 0))
|
|
|
460 ;; (end (point)))
|
|
|
461 ;; (if completion-fixup-function
|
|
|
462 ;; (funcall completion-fixup-function))
|
|
|
463 ;; (put-text-property beg (point) 'mouse-face 'highlight)
|
|
|
464 ;; (put-text-property beg (point) 'list-mode-item t)
|
|
|
465 ;; (goto-char end)))))
|
|
|
466 ))
|
|
442
|
467 (save-excursion
|
|
|
468 (set-buffer standard-output)
|
|
|
469 (run-hooks 'completion-setup-hook))))
|
|
428
|
470
|
|
|
471 (defvar completion-display-completion-list-function 'display-completion-list
|
|
|
472 "Function to set up the list of completions in the completion buffer.
|
|
|
473 The function is called with one argument, the sorted list of completions.
|
|
|
474 Particular minibuffer interface functions (e.g. `read-file-name') may
|
|
|
475 want to change this. To do that, set a local value for this variable
|
|
|
476 in the minibuffer; that ensures that other minibuffer invocations will
|
|
|
477 not be affected.")
|
|
|
478
|
|
|
479 (defun minibuffer-completion-help ()
|
|
|
480 "Display a list of possible completions of the current minibuffer contents.
|
|
|
481 The list of completions is determined by calling `all-completions',
|
|
|
482 passing it the current minibuffer contents, the value of
|
|
|
483 `minibuffer-completion-table', and the value of
|
|
|
484 `minibuffer-completion-predicate'. The list is displayed by calling
|
|
|
485 the value of `completion-display-completion-list-function' on the sorted
|
|
|
486 list of completions, with the standard output set to the completion
|
|
|
487 buffer."
|
|
|
488 (interactive)
|
|
|
489 (message "Making completion list...")
|
|
|
490 (let ((completions (all-completions (buffer-string)
|
|
|
491 minibuffer-completion-table
|
|
|
492 minibuffer-completion-predicate)))
|
|
|
493 (message nil)
|
|
|
494 (if (null completions)
|
|
|
495 (progn
|
|
|
496 (ding nil 'no-completion)
|
|
|
497 (temp-minibuffer-message " [No completions]"))
|
|
|
498 (with-output-to-temp-buffer "*Completions*"
|
|
|
499 (funcall completion-display-completion-list-function
|
|
|
500 (sort completions #'string-lessp))))))
|
|
|
501
|
|
|
502 (define-derived-mode completion-list-mode list-mode
|
|
|
503 "Completion List"
|
|
|
504 "Major mode for buffers showing lists of possible completions.
|
|
|
505 \\{completion-list-mode-map}"
|
|
|
506 (make-local-variable 'completion-base-size)
|
|
|
507 (setq completion-base-size nil))
|
|
|
508
|
|
|
509 (let ((map completion-list-mode-map))
|
|
|
510 (define-key map 'button2up 'mouse-choose-completion)
|
|
|
511 (define-key map 'button2 'undefined)
|
|
|
512 (define-key map "\C-m" 'choose-completion)
|
|
|
513 (define-key map "\e\e\e" 'delete-completion-window)
|
|
|
514 (define-key map "\C-g" 'minibuffer-keyboard-quit)
|
|
|
515 (define-key map "q" 'completion-list-mode-quit)
|
|
|
516 (define-key map " " 'completion-switch-to-minibuffer)
|
|
|
517 ;; [Tab] used to switch to the minibuffer but since [space] does that and
|
|
|
518 ;; since most applications in the world use [Tab] to select the next item
|
|
|
519 ;; in a list, do that in the *Completions* buffer too. -- Bob Weiner,
|
|
|
520 ;; BeOpen.com, 06/23/1999.
|
|
|
521 (define-key map "\t" 'next-list-mode-item))
|
|
|
522
|
|
|
523 (defvar completion-reference-buffer nil
|
|
|
524 "Record the buffer that was current when the completion list was requested.
|
|
|
525 This is a local variable in the completion list buffer.
|
|
|
526 Initial value is nil to avoid some compiler warnings.")
|
|
|
527
|
|
|
528 (defvar completion-base-size nil
|
|
|
529 "Number of chars at beginning of minibuffer not involved in completion.
|
|
|
530 This is a local variable in the completion list buffer
|
|
|
531 but it talks about the buffer in `completion-reference-buffer'.
|
|
|
532 If this is nil, it means to compare text to determine which part
|
|
|
533 of the tail end of the buffer's text is involved in completion.")
|
|
|
534
|
|
|
535 ;; These names are referenced in the doc string for `completion-list-mode'.
|
|
|
536 (defalias 'choose-completion 'list-mode-item-keyboard-selected)
|
|
|
537 (defalias 'mouse-choose-completion 'list-mode-item-mouse-selected)
|
|
|
538
|
|
|
539 (defun delete-completion-window ()
|
|
|
540 "Delete the completion list window.
|
|
|
541 Go to the window from which completion was requested."
|
|
|
542 (interactive)
|
|
|
543 (let ((buf completion-reference-buffer))
|
|
|
544 (delete-window (selected-window))
|
|
|
545 (if (get-buffer-window buf)
|
|
|
546 (select-window (get-buffer-window buf)))))
|
|
|
547
|
|
|
548 (defun completion-switch-to-minibuffer ()
|
|
|
549 "Move from a completions buffer to the active minibuffer window."
|
|
|
550 (interactive)
|
|
|
551 (select-window (minibuffer-window)))
|
|
|
552
|
|
|
553 (defun completion-list-mode-quit ()
|
|
|
554 "Abort any recursive edit and bury the completions buffer."
|
|
|
555 (interactive)
|
|
|
556 (condition-case ()
|
|
|
557 (abort-recursive-edit)
|
|
|
558 (error nil))
|
|
|
559 ;; If there was no recursive edit to abort, simply bury the completions
|
|
|
560 ;; list buffer.
|
|
|
561 (if (eq major-mode 'completion-list-mode) (bury-buffer)))
|
|
|
562
|
|
|
563 (defun completion-do-in-minibuffer ()
|
|
|
564 (interactive "_")
|
|
|
565 (save-excursion
|
|
|
566 (set-buffer (window-buffer (minibuffer-window)))
|
|
|
567 (call-interactively (key-binding (this-command-keys)))))
|
|
|
568
|
|
|
569 (defun default-choose-completion (event extent buffer)
|
|
|
570 "Click on an alternative in the `*Completions*' buffer to choose it."
|
|
|
571 (and (button-event-p event)
|
|
|
572 ;; Give temporary modes such as isearch a chance to turn off.
|
|
|
573 (run-hooks 'mouse-leave-buffer-hook))
|
|
|
574 (or buffer (setq buffer (symbol-value-in-buffer
|
|
|
575 'completion-reference-buffer
|
|
|
576 (or (and (button-event-p event)
|
|
|
577 (event-buffer event))
|
|
|
578 (current-buffer)))))
|
|
|
579 (save-selected-window
|
|
|
580 (and (button-event-p event)
|
|
|
581 (select-window (event-window event)))
|
|
|
582 (if (and (one-window-p t 'selected-frame)
|
|
|
583 (window-dedicated-p (selected-window)))
|
|
|
584 ;; This is a special buffer's frame
|
|
|
585 (iconify-frame (selected-frame))
|
|
|
586 (or (window-dedicated-p (selected-window))
|
|
|
587 (bury-buffer))))
|
|
|
588 (choose-completion-string (extent-string extent)
|
|
|
589 buffer
|
|
|
590 completion-base-size))
|
|
|
591
|
|
|
592 ;; Delete the longest partial match for STRING
|
|
|
593 ;; that can be found before POINT.
|
|
|
594 (defun choose-completion-delete-max-match (string)
|
|
|
595 (let ((len (min (length string)
|
|
|
596 (- (point) (point-min)))))
|
|
|
597 (goto-char (- (point) (length string)))
|
|
|
598 (if completion-ignore-case
|
|
|
599 (setq string (downcase string)))
|
|
|
600 (while (and (> len 0)
|
|
|
601 (let ((tail (buffer-substring (point)
|
|
|
602 (+ (point) len))))
|
|
|
603 (if completion-ignore-case
|
|
|
604 (setq tail (downcase tail)))
|
|
|
605 (not (string= tail (substring string 0 len)))))
|
|
|
606 (setq len (1- len))
|
|
|
607 (forward-char 1))
|
|
|
608 (delete-char len)))
|
|
|
609
|
|
|
610 ;; Switch to BUFFER and insert the completion choice CHOICE.
|
|
|
611 ;; BASE-SIZE, if non-nil, says how many characters of BUFFER's text
|
|
|
612 ;; to keep. If it is nil, use choose-completion-delete-max-match instead.
|
|
|
613 (defun choose-completion-string (choice &optional buffer base-size)
|
|
|
614 (let ((buffer (or buffer completion-reference-buffer)))
|
|
|
615 ;; If BUFFER is a minibuffer, barf unless it's the currently
|
|
|
616 ;; active minibuffer.
|
|
|
617 (if (and (string-match "\\` \\*Minibuf-[0-9]+\\*\\'" (buffer-name buffer))
|
|
|
618 (or (not (active-minibuffer-window))
|
|
|
619 (not (equal buffer
|
|
|
620 (window-buffer (active-minibuffer-window))))))
|
|
|
621 (error "Minibuffer is not active for completion")
|
|
|
622 ;; Insert the completion into the buffer where completion was requested.
|
|
|
623 (set-buffer buffer)
|
|
|
624 (if base-size
|
|
|
625 (delete-region (+ base-size (point-min)) (point))
|
|
|
626 (choose-completion-delete-max-match choice))
|
|
|
627 (insert choice)
|
|
|
628 (remove-text-properties (- (point) (length choice)) (point)
|
|
|
629 '(highlight nil))
|
|
|
630 ;; Update point in the window that BUFFER is showing in.
|
|
|
631 (let ((window (get-buffer-window buffer t)))
|
|
|
632 (set-window-point window (point)))
|
|
|
633 ;; If completing for the minibuffer, exit it with this choice.
|
|
|
634 (and (equal buffer (window-buffer (minibuffer-window)))
|
|
|
635 minibuffer-completion-table
|
|
|
636 (exit-minibuffer)))))
|
|
|
637
|
|
|
638 (define-key minibuffer-local-completion-map [prior]
|
|
|
639 'switch-to-completions)
|
|
|
640 (define-key minibuffer-local-must-match-map [prior]
|
|
|
641 'switch-to-completions)
|
|
|
642 (define-key minibuffer-local-completion-map "\M-v"
|
|
|
643 'advertised-switch-to-completions)
|
|
|
644 (define-key minibuffer-local-must-match-map "\M-v"
|
|
|
645 'advertised-switch-to-completions)
|
|
|
646
|
|
|
647 (defalias 'advertised-switch-to-completions 'switch-to-completions)
|
|
|
648 (defun switch-to-completions ()
|
|
|
649 "Select the completion list window."
|
|
|
650 (interactive)
|
|
|
651 ;; Make sure we have a completions window.
|
|
|
652 (or (get-buffer-window "*Completions*")
|
|
|
653 (minibuffer-completion-help))
|
|
|
654 (if (not (get-buffer-window "*Completions*"))
|
|
|
655 nil
|
|
|
656 (select-window (get-buffer-window "*Completions*"))
|
|
|
657 (goto-char (next-single-property-change (point-min) 'list-mode-item nil
|
|
|
658 (point-max)))))
|
|
|
659
|
|
|
660 ;;; list-mode.el ends here
|
