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428
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1 ;;; menubar.el --- Menubar support for XEmacs
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2
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3 ;; Copyright (C) 1991-4, 1997-1998 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
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5 ;; Copyright (C) 1995, 1996, 2003 Ben Wing.
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6
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7 ;; Maintainer: XEmacs Development Team
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8 ;; Keywords: internal, extensions, dumped
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9
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10 ;; This file is part of XEmacs.
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11
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12 ;; XEmacs is free software; you can redistribute it and/or modify it
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13 ;; under the terms of the GNU General Public License as published by
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14 ;; the Free Software Foundation; either version 2, or (at your option)
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15 ;; any later version.
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16
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17 ;; XEmacs is distributed in the hope that it will be useful, but
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18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ;; General Public License for more details.
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21
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with XEmacs; see the file COPYING. If not, write to the
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24 ;; Free Software Foundation, 59 Temple Place - Suite 330,
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25 ;; Boston, MA 02111-1307, USA.
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26
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27 ;;; Synched up with: Not in FSF. (Completely divergent from FSF menu-bar.el)
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28
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29 ;;; Commentary:
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30
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31 ;; This file is dumped with XEmacs (when menubar support is compiled in).
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32
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442
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33 ;; Some stuff in FSF menu-bar.el is in menubar-items.el
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34
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35 ;;; Code:
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36
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37 (defgroup menu nil
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38 "Input from the menus."
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39 :group 'environment)
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40
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41 (defvar default-menubar nil)
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42
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43 ;; this function is considered "part of the lexicon" by many,
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44 ;; so we'll leave it here.
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45 (defun kill-this-buffer () ; for the menubar
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46 "Kill the current buffer."
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47 (interactive)
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48 (kill-buffer (current-buffer)))
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49
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50 (defun set-menubar-dirty-flag ()
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51 "Tell XEmacs that the menubar has to be updated.
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52 NOTE: XEmacs now recognizes when you set a different value for
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53 `current-menubar'. You *only* need to call this function if you
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54 destructively modify a part of the menubar and don't set `current-menubar'.
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55 Note that all the functions that modify a menu call this automatically."
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56 (setq-default current-menubar (default-value 'current-menubar)))
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57
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58 ;; #### shouldn't this perhaps be `copy-tree'?
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59 (defun set-menubar (menubar)
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60 "Set the default menubar to be MENUBAR.
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61 See `current-menubar' for a description of the syntax of a menubar."
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62 (check-menu-syntax menubar t)
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63 (setq-default current-menubar (copy-sequence menubar)))
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64
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65 (defun set-buffer-menubar (menubar)
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66 "Set the buffer-local menubar to be MENUBAR.
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67 See `current-menubar' for a description of the syntax of a menubar."
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68 (check-menu-syntax menubar t)
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69 (make-local-variable 'current-menubar)
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70 (setq current-menubar (copy-sequence menubar)))
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71
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72 (defun check-menu-syntax (menu &optional menubar-p)
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73 ;; The C code does syntax checking on the value of `current-menubar',
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74 ;; but it's better to do it early, before things have gotten messed up.
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75 (if menubar-p
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76 nil
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77 (or (stringp (car menu))
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78 (signal 'error
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79 (list "menu name (first element) must be a string" menu)))
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80 ;;(or (cdr menu) (signal 'error (list "menu is empty" menu)))
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81 (setq menu (cdr menu)))
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82 (let (menuitem item)
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83 (while (keywordp (setq item (car menu)))
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84 (or (memq item '(:config :included :filter :accelerator))
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85 (signal 'error
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86 (list "menu keyword must be :config, :included, :accelerator or :filter"
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87 item)))
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88 (if (or (not (cdr menu))
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89 (vectorp (nth 1 menu))
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90 (keywordp (nth 1 menu)))
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91 (signal 'error (list "strange keyword value" item (nth 1 menu))))
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92 (setq menu (nthcdr 2 menu)))
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93 (while menu
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94 (setq menuitem (car menu))
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95 (cond
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96 ((stringp menuitem)
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97 (and (string-match "^\\(-+\\|=+\\):\\(.*\\)" menuitem)
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98 (setq item (match-string 2 menuitem))
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99 (or (member item '(;; Motif-compatible
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100 "singleLine"
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101 "doubleLine"
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102 "singleDashedLine"
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103 "doubleDashedLine"
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104 "noLine"
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105 "shadowEtchedIn"
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106 "shadowEtchedOut"
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107 "shadowEtchedInDash"
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108 "shadowEtchedOutDash"
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109 ;; non-Motif (Lucid menubar widget only)
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110 "shadowDoubleEtchedIn"
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111 "shadowDoubleEtchedOut"
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112 "shadowDoubleEtchedInDash"
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113 "shadowDoubleEtchedOutDash"
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114 ))
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115 (signal 'error (list "bogus separator style in menu item" item)))
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116 ))
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117 ((null menuitem)
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118 (or menubar-p
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119 (signal 'error (list "nil is only permitted in the top level of menubars"))))
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120 ((consp menuitem)
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121 (check-menu-syntax menuitem))
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122 ((vectorp menuitem)
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123 (let ((L (length menuitem))
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124 plistp)
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125 (and (< L 2)
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126 (signal 'error
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127 (list "button descriptors must be at least 2 long"
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128 menuitem)))
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129 (setq plistp (or (>= L 5)
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130 (and (> L 2) (keywordp (aref menuitem 2)))))
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131 (if plistp
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132 (let ((i 2)
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133 selp
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134 style
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135 item)
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136 (while (< i L)
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137 (setq item (aref menuitem i))
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138 (cond ((not (memq item '(:active :suffix :keys :style
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139 :full :included :selected
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140 :accelerator)))
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141 (signal 'error
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142 (list (if (keywordp item)
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143 "unknown menu item keyword"
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144 "not a keyword")
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145 item menuitem)))
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146 ((eq item :style)
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147 (setq style (aref menuitem (1+ i)))
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148 (or (memq style '(nil toggle radio button text))
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149 (signal 'error (list "unknown style" style
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150 menuitem))))
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151 ((eq item :selected) (setq selp t))
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152 )
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153 (setq i (+ i (if (eq item :full) 1 2))))
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154 (if (and selp (not (memq style '(toggle button radio))))
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155 (signal 'error
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156 (list
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157 ":selected only makes sense with :style toggle, radio, or button"
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158 menuitem)))
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159 )))
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160 )
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161 ;; (t (signal 'error (list "unrecognized menu descriptor" menuitem))))
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162 (t (message "unrecognized menu descriptor %s" (prin1-to-string menuitem))))
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163 (setq menu (cdr menu)))))
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164
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165
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166 ;;; basic menu manipulation functions
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167
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168 (defun menu-item-text (item &optional normalize)
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169 "Return the text that is displayed for a menu item.
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170 If ITEM is a string (unselectable text), it is returned; otherwise,
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171 the first element of the cons or vector is returned.
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172 If NORMALIZE is non-nil, pass the text through `normalize-menu-text'
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173 before being returned, to remove accelerator specs and convert %% to %."
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174 (let ((val (if (stringp item) item (elt item 0))))
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175 (if normalize (normalize-menu-text val) val)))
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176
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177 (defun find-menu-item (menubar item-path-list)
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178 "Search MENUBAR for item given by ITEM-PATH-LIST.
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428
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179 Returns (ITEM . PARENT), where PARENT is the immediate parent of
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180 the item found.
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181 If the item does not exist, the car of the returned value is nil.
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182 If some menu in the ITEM-PATH-LIST does not exist, an error is signalled."
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183 (find-menu-item-1 menubar item-path-list))
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184
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185 (defun find-menu-item-1 (menubar item-path-list &optional parent)
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428
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186 (check-argument-type 'listp item-path-list)
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187 (if (not (consp menubar))
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188 nil
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189 (let ((rest menubar)
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190 result)
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191 (when (stringp (car rest))
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192 (setq rest (cdr rest)))
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193 (while (keywordp (car rest))
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194 (setq rest (cddr rest)))
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195 (while rest
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196 (if (and (car rest)
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197 (stringp (car item-path-list))
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198 (= 0 (compare-menu-text (car item-path-list)
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199 (menu-item-text (car rest)))))
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200 (setq result (car rest)
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201 rest nil)
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202 (setq rest (cdr rest))))
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203 (if (cdr item-path-list)
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204 (cond ((consp result)
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205 (find-menu-item-1 (cdr result) (cdr item-path-list) result))
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206 (result
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207 (signal 'error (list (gettext "not a submenu") result)))
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208 (t
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209 (signal 'error (list (gettext "no such submenu")
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210 (car item-path-list)))))
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211 (cons result parent)))))
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212
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213 (defun add-menu-item-1 (leaf-p menu-path new-item before in-menu)
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214 ;; This code looks like it could be cleaned up some more
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215 ;; Do we really need 6 calls to find-menu-item?
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216 (let* ((item-name
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217 (cond ((vectorp new-item) (aref new-item 0))
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218 ((consp new-item) (car new-item))
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219 (t nil)))
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220 (menubar (or in-menu current-menubar))
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221 (menu (condition-case ()
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222 (car (find-menu-item menubar menu-path))
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223 (error nil)))
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224 (item-found (cond
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225 ((null item-name)
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226 nil)
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227 ((not (listp menu))
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228 (signal 'error (list (gettext "not a submenu")
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229 menu-path)))
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230 (menu
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231 (find-menu-item (cdr menu) (list item-name)))
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232 (t
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233 (find-menu-item menubar (list item-name)))
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234 )))
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235 (unless menubar
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236 (error "`current-menubar' is nil: can't add menus to it."))
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237 (unless menu
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238 (let ((rest menu-path)
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239 (so-far menubar))
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240 (while rest
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241 ;;; (setq menu (car (find-menu-item (cdr so-far) (list (car rest)))))
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242 (setq menu
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243 (if (eq so-far menubar)
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244 (car (find-menu-item so-far (list (car rest))))
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245 (car (find-menu-item (cdr so-far) (list (car rest))))))
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246 (unless menu
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247 (let ((rest2 so-far))
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248 (while (and (cdr rest2) (car (cdr rest2)))
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249 (setq rest2 (cdr rest2)))
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250 (setcdr rest2
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251 (nconc (list (setq menu (list (car rest))))
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252 (cdr rest2)))))
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253 (setq so-far menu)
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254 (setq rest (cdr rest)))))
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255 (if (and item-found (car item-found))
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256 ;; hack the item in place.
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257 (if menu
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258 ;; Isn't it very bad form to use nsubstitute for side effects?
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259 (nsubstitute new-item (car item-found) menu)
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260 (setq current-menubar (nsubstitute new-item
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261 (car item-found)
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262 current-menubar)))
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263 ;; OK, we have to add the whole thing...
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264 ;; if BEFORE is specified, try to add it there.
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265 (unless menu (setq menu current-menubar))
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266 (when before
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267 (setq before (car (find-menu-item menu (list before)))))
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268 (let ((rest menu)
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269 (added-before nil))
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270 (while rest
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271 (if (eq before (car (cdr rest)))
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272 (progn
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273 (setcdr rest (cons new-item (cdr rest)))
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274 (setq rest nil added-before t))
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275 (setq rest (cdr rest))))
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276 (when (not added-before)
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277 ;; adding before the first item on the menubar itself is harder
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278 (if (and (eq menu menubar) (eq before (car menu)))
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279 (setq menu (cons new-item menu)
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280 current-menubar menu)
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281 ;; otherwise, add the item to the end.
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282 (nconc menu (list new-item))))))
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283 (set-menubar-dirty-flag)
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284 new-item))
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285
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286 (defun add-menu-button (menu-path menu-leaf &optional before in-menu)
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287 "Add a menu item to some menu, creating the menu first if necessary.
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288 If the named item exists already, it is changed.
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289 MENU-PATH identifies the menu under which the new menu item should be inserted.
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290 It is a list of strings; for example, (\"File\") names the top-level \"File\"
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291 menu. (\"File\" \"Foo\") names a hypothetical submenu of \"File\".
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292 MENU-LEAF is a menubar leaf node. See the documentation of `current-menubar'.
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293 BEFORE, if provided, is the name of a menu item before which this item should
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294 be added, if this item is not on the menu already. If the item is already
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295 present, it will not be moved.
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296 IN-MENU, if provided, means use that instead of `current-menubar' as the
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297 menu to change."
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428
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298 ;; Note easymenu.el uses the fact that menu-leaf can be a submenu.
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299 (add-menu-item-1 t menu-path menu-leaf before in-menu))
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300
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301 ;; I actually liked the old name better, but the interface has changed too
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302 ;; drastically to keep it. --Stig
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303 (defun add-submenu (menu-path submenu &optional before in-menu)
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304 "Add a menu to the menubar or one of its submenus.
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305 If the named menu exists already, it is changed.
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306 MENU-PATH identifies the menu under which the new menu should be inserted.
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307 It is a list of strings; for example, (\"File\") names the top-level \"File\"
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308 menu. (\"File\" \"Foo\") names a hypothetical submenu of \"File\".
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309 If MENU-PATH is nil, then the menu will be added to the menubar itself.
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310 SUBMENU is the new menu to add.
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311 See the documentation of `current-menubar' for the syntax.
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312 BEFORE, if provided, is the name of a menu before which this menu should
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313 be added, if this menu is not on its parent already. If the menu is already
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314 present, it will not be moved.
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315 IN-MENU, if provided, means use that instead of `current-menubar' as the
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316 menu to change."
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428
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317 (check-menu-syntax submenu nil)
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318 (add-menu-item-1 nil menu-path submenu before in-menu))
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444
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319 ;; purespace is no more, so this function is unnecessary
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320 ;(defun purecopy-menubar (x)
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321 ; ;; this calls purecopy on the strings, and the contents of the vectors,
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322 ; ;; but not on the vectors themselves, or the conses - those must be
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323 ; ;; writable.
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324 ; (cond ((vectorp x)
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325 ; (let ((i (length x)))
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326 ; (while (> i 0)
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327 ; (aset x (1- i) (purecopy (aref x (1- i))))
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328 ; (setq i (1- i))))
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329 ; x)
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330 ; ((consp x)
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331 ; (let ((rest x))
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332 ; (while rest
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333 ; (setcar rest (purecopy-menubar (car rest)))
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334 ; (setq rest (cdr rest))))
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335 ; x)
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336 ; (t
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337 ; (purecopy x))))
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428
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338
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339 (defun delete-menu-item (path &optional from-menu)
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340 "Remove the named menu item from the menu hierarchy.
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444
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341 PATH is a list of strings which identify the position of the menu item
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342 in the menu hierarchy. The documentation of `add-submenu' describes
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343 menu paths.
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344 FROM-MENU, if provided, means use that instead of `current-menubar'
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345 as the menu to change."
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428
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346 (let* ((pair (condition-case nil (find-menu-item (or from-menu
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347 current-menubar) path)
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348 (error nil)))
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349 (item (car pair))
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350 (parent (or (cdr pair) current-menubar)))
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351 (if (not item)
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352 nil
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353 ;; the menubar is the only special case, because other menus begin
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354 ;; with their name.
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355 (if (eq parent current-menubar)
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356 (setq current-menubar (delq item parent))
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357 (delq item parent))
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358 (set-menubar-dirty-flag)
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359 item)))
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360
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361 (defun relabel-menu-item (path new-name)
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362 "Change the string of the specified menu item.
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444
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363 PATH is a list of strings which identify the position of the menu item in
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428
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364 the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
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|
444
|
365 under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
|
|
428
|
366 menu item called \"Item\" under the \"Foo\" submenu of \"Menu\".
|
|
|
367 NEW-NAME is the string that the menu item will be printed as from now on."
|
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446
|
368 (check-type new-name string)
|
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428
|
369 (let* ((menubar current-menubar)
|
|
|
370 (pair (find-menu-item menubar path))
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|
371 (item (car pair))
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|
|
372 (menu (cdr pair)))
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|
|
373 (or item
|
|
|
374 (signal 'error (list (if menu (gettext "No such menu item")
|
|
|
375 (gettext "No such menu"))
|
|
|
376 path)))
|
|
|
377 (if (and (consp item)
|
|
|
378 (stringp (car item)))
|
|
|
379 (setcar item new-name)
|
|
|
380 (aset item 0 new-name))
|
|
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381 (set-menubar-dirty-flag)
|
|
|
382 item))
|
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383
|
|
|
384 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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|
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385 ;;
|
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386 ;; these are all bad style. Why in the world would we put evaluable forms
|
|
|
387 ;; into the menubar if we didn't want people to use 'em?
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|
|
388 ;; x-font-menu.el is the only known offender right now and that ought to be
|
|
|
389 ;; rehashed a bit.
|
|
444
|
390 ;;
|
|
428
|
391
|
|
|
392 (defun enable-menu-item-1 (path toggle-p on-p)
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|
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393 (let (menu item)
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|
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394 (if (and (vectorp path) (> (length path) 2)) ; limited syntax checking...
|
|
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395 (setq item path)
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|
|
396 (let* ((menubar current-menubar)
|
|
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397 (pair (find-menu-item menubar path)))
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398 (setq item (car pair)
|
|
|
399 menu (cdr pair))
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|
|
400 (or item
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|
|
401 (signal 'error (list (if menu
|
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|
402 "No such menu item"
|
|
|
403 "No such menu")
|
|
|
404 path)))
|
|
|
405 (if (consp item)
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|
|
406 (error "%S is a menu, not a menu item" path))))
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|
|
407 (if (or (> (length item) 4)
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|
|
408 (and (symbolp (aref item 2))
|
|
|
409 (= ?: (aref (symbol-name (aref item 2)) 0))))
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|
410 ;; plist-like syntax
|
|
|
411 (let ((i 2)
|
|
|
412 (keyword (if toggle-p :selected :active))
|
|
|
413 (ok nil))
|
|
|
414 (while (< i (length item))
|
|
|
415 (cond ((eq (aref item i) keyword)
|
|
|
416 (aset item (1+ i) on-p)
|
|
|
417 (setq ok t)))
|
|
|
418 (setq i (+ i 2)))
|
|
|
419 (cond (ok nil)
|
|
|
420 (toggle-p
|
|
|
421 (signal 'error (list "not a toggle menu item" item)))
|
|
|
422 (t
|
|
|
423 ;; Need to copy the item to extend it, sigh...
|
|
|
424 (let ((cons (memq item menu))
|
|
|
425 (new-item (vconcat item (list keyword on-p))))
|
|
|
426 (if cons
|
|
|
427 (setcar cons (setq item new-item))
|
|
|
428 (if menu
|
|
|
429 (error "couldn't find %S on its parent?" item)
|
|
|
430 (error "no %S slot to set: %S" keyword item)))))))
|
|
|
431 ;; positional syntax
|
|
|
432 (if toggle-p
|
|
|
433 (signal 'error (list "not a toggle menu item" item))
|
|
|
434 (aset item 2 on-p)))
|
|
|
435 (set-menubar-dirty-flag)
|
|
|
436 item))
|
|
|
437
|
|
|
438 (defun enable-menu-item (path)
|
|
|
439 "Make the named menu item be selectable.
|
|
444
|
440 PATH is a list of strings which identify the position of the menu item in
|
|
428
|
441 the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
|
|
444
|
442 under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
|
|
428
|
443 menu item called \"Item\" under the \"Foo\" submenu of \"Menu\"."
|
|
|
444 (enable-menu-item-1 path nil t))
|
|
|
445
|
|
|
446 (defun disable-menu-item (path)
|
|
|
447 "Make the named menu item be unselectable.
|
|
444
|
448 PATH is a list of strings which identify the position of the menu item in
|
|
428
|
449 the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
|
|
444
|
450 under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
|
|
428
|
451 menu item called \"Item\" under the \"Foo\" submenu of \"Menu\"."
|
|
|
452 (enable-menu-item-1 path nil nil))
|
|
|
453
|
|
|
454 (defun select-toggle-menu-item (path)
|
|
|
455 "Make the named toggle- or radio-style menu item be in the `selected' state.
|
|
444
|
456 PATH is a list of strings which identify the position of the menu item in
|
|
428
|
457 the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
|
|
444
|
458 under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
|
|
428
|
459 menu item called \"Item\" under the \"Foo\" submenu of \"Menu\"."
|
|
|
460 (enable-menu-item-1 path t t))
|
|
|
461
|
|
|
462 (defun deselect-toggle-menu-item (path)
|
|
|
463 "Make the named toggle- or radio-style menu item be in the `unselected' state.
|
|
444
|
464 PATH is a list of strings which identify the position of the menu item in
|
|
428
|
465 the menu hierarchy. (\"File\" \"Save\") means the menu item called \"Save\"
|
|
444
|
466 under the toplevel \"File\" menu. (\"Menu\" \"Foo\" \"Item\") means the
|
|
428
|
467 menu item called \"Item\" under the \"Foo\" submenu of \"Menu\"."
|
|
|
468 (enable-menu-item-1 path t nil))
|
|
|
469
|
|
|
470
|
|
2545
|
471 ;;; functions for manipulating whole menus -- adding accelerators, sorting,
|
|
|
472 ;;; splitting long menus, etc.
|
|
|
473
|
|
|
474 (defun submenu-generate-accelerator-spec (list &optional omit-chars-list)
|
|
|
475 "Add auto-generated accelerator specifications to a submenu.
|
|
|
476 This can be used to add accelerators to the return value of a menu filter
|
|
|
477 function. It correctly ignores unselectable items. It will destructively
|
|
|
478 modify the list passed to it. If an item already has an auto-generated
|
|
|
479 accelerator spec, this will be removed before the new one is added, making
|
|
|
480 this function idempotent.
|
|
|
481
|
|
|
482 If OMIT-CHARS-LIST is given, it should be a list of lowercase characters,
|
|
|
483 which will not be used as accelerators."
|
|
|
484 (let ((n 0))
|
|
|
485 (dolist (item list list)
|
|
|
486 (cond
|
|
|
487 ((or (vectorp item) (consp item))
|
|
|
488 (incf n)
|
|
|
489 (setf (elt item 0)
|
|
|
490 (concat
|
|
|
491 (menu-item-generate-accelerator-spec n omit-chars-list)
|
|
|
492 (menu-item-strip-accelerator-spec (elt item 0)))))))))
|
|
|
493
|
|
|
494 (defun menu-item-strip-accelerator-spec (item)
|
|
|
495 "Strip an auto-generated accelerator spec off of ITEM.
|
|
|
496 ITEM should be a string. This removes specs added by
|
|
|
497 `menu-item-generate-accelerator-spec' and `submenu-generate-accelerator-spec'."
|
|
|
498 (if (string-match "%_. " item)
|
|
|
499 (substring item 4)
|
|
|
500 item))
|
|
|
501
|
|
|
502 (defun menu-item-generate-accelerator-spec (n &optional omit-chars-list)
|
|
|
503 "Return an accelerator specification for use with auto-generated menus.
|
|
|
504 This should be concat'd onto the beginning of each menu line. The spec
|
|
|
505 allows the Nth line to be selected by the number N. '0' is used for the
|
|
|
506 10th line, and 'a' through 'z' are used for the following 26 lines.
|
|
|
507
|
|
|
508 If OMIT-CHARS-LIST is given, it should be a list of lowercase characters,
|
|
|
509 which will not be used as accelerators."
|
|
|
510 (cond ((< n 10) (concat "%_" (int-to-string n) " "))
|
|
|
511 ((= n 10) "%_0 ")
|
|
|
512 ((<= n 36)
|
|
|
513 (setq n (- n 10))
|
|
|
514 (let ((m 0))
|
|
|
515 (while (> n 0)
|
|
|
516 (setq m (1+ m))
|
|
|
517 (while (memq (int-to-char (+ m (- (char-to-int ?a) 1)))
|
|
|
518 omit-chars-list)
|
|
|
519 (setq m (1+ m)))
|
|
|
520 (setq n (1- n)))
|
|
|
521 (if (<= m 26)
|
|
|
522 (concat
|
|
|
523 "%_"
|
|
|
524 (char-to-string (int-to-char (+ m (- (char-to-int ?a) 1))))
|
|
|
525 " ")
|
|
|
526 "")))
|
|
|
527 (t "")))
|
|
|
528
|
|
|
529 (defcustom menu-max-items 25
|
|
|
530 "*Maximum number of items in generated menus.
|
|
|
531 If number of entries in such a menu is larger than this value, split menu
|
|
|
532 into submenus of nearly equal length (see `menu-submenu-max-items'). If
|
|
|
533 nil, never split menu into submenus."
|
|
|
534 :group 'menu
|
|
|
535 :type '(choice (const :tag "no submenus" nil)
|
|
|
536 (integer)))
|
|
|
537
|
|
|
538 (defcustom menu-submenu-max-items 20
|
|
|
539 "*Maximum number of items in submenus when splitting menus.
|
|
|
540 We split large menus into submenus of this many items, and then balance
|
|
|
541 them out as much as possible (otherwise the last submenu may have very few
|
|
|
542 items)."
|
|
|
543 :group 'menu
|
|
|
544 :type 'integer)
|
|
|
545
|
|
|
546 (defcustom menu-submenu-name-format "%-12.12s ... %.12s"
|
|
|
547 "*Format specification of the submenu name when splitting menus.
|
|
|
548 Used by `menu-split-long-menu' if the number of entries in a menu is
|
|
|
549 larger than `menu-menu-max-items'.
|
|
|
550 This string should contain one %s for the name of the first entry and
|
|
|
551 one %s for the name of the last entry in the submenu.
|
|
|
552 If the value is a function, it should return the submenu name. The
|
|
|
553 function is be called with two arguments, the names of the first and
|
|
|
554 the last entry in the menu."
|
|
|
555 :group 'menu
|
|
|
556 :type '(choice (string :tag "Format string")
|
|
|
557 (function)))
|
|
|
558
|
|
|
559 (defun menu-split-long-menu-and-sort (menu)
|
|
|
560 "Sort MENU, split according to `menu-max-items' and add accelerator specs.
|
|
|
561 This is useful for menus generated by filter functions, to make them look
|
|
|
562 nice. This is equivalent to
|
|
|
563
|
|
|
564 \(menu-split-long-menu (menu-sort-menu menu))
|
|
|
565
|
|
|
566 and you can call those functions individually if necessary.
|
|
|
567 You can also call `submenu-generate-accelerator-spec' yourself to add
|
|
|
568 accelerator specs -- this works even if the specs have already been added."
|
|
|
569 (menu-split-long-menu (menu-sort-menu menu)))
|
|
|
570
|
|
|
571 (defun menu-split-long-menu (menu)
|
|
|
572 "Split MENU according to `menu-max-items' and add accelerator specs.
|
|
|
573 If MENU already has accelerator specs, they will be removed and new ones
|
|
|
574 generated. You should normally use `menu-split-long-menu-and-sort' instead.
|
|
|
575 The menu should already be sorted to get meaningful results when it is
|
|
|
576 split, since the outer menus are of the format `FROM ... TO'."
|
|
|
577 (let ((len (length menu)))
|
|
|
578 (if (or (null menu-max-items)
|
|
|
579 (<= len menu-max-items))
|
|
|
580 (submenu-generate-accelerator-spec menu)
|
|
|
581 (let* ((outer (/ (+ len (1- menu-submenu-max-items))
|
|
|
582 menu-submenu-max-items))
|
|
|
583 (inner (/ (+ len (1- outer)) outer))
|
|
|
584 (result nil))
|
|
|
585 (while menu
|
|
|
586 (let ((sub nil)
|
|
|
587 (from (car menu)))
|
|
|
588 (dotimes (foo (min inner len))
|
|
|
589 (setq sub (cons (car menu) sub)
|
|
|
590 menu (cdr menu)))
|
|
|
591 (setq len (- len inner))
|
|
|
592 (let* ((to (car sub))
|
|
|
593 (ftext (menu-item-strip-accelerator-spec
|
|
|
594 (menu-item-text from)))
|
|
|
595 (ttext (menu-item-strip-accelerator-spec
|
|
|
596 (menu-item-text to))))
|
|
|
597 (setq sub (nreverse sub))
|
|
|
598 (setq result
|
|
|
599 (cons (cons (if (stringp menu-submenu-name-format)
|
|
|
600 (format menu-submenu-name-format
|
|
|
601 ftext ttext)
|
|
|
602 (funcall menu-submenu-name-format
|
|
|
603 ftext ttext))
|
|
|
604 (submenu-generate-accelerator-spec sub))
|
|
|
605 result)))))
|
|
|
606 (submenu-generate-accelerator-spec (nreverse result))))))
|
|
|
607
|
|
|
608 (defun menu-sort-menu (menu)
|
|
|
609 "Sort MENU alphabetically.
|
|
|
610 You should normally use `menu-split-long-menu-and-sort' instead."
|
|
|
611 (sort menu
|
|
|
612 #'(lambda (a b) (< (compare-menu-text
|
|
|
613 (menu-item-text a) (menu-item-text b))
|
|
|
614 0))))
|
|
|
615
|
|
442
|
616
|
|
|
617 ;;;;;;; popup menus
|
|
|
618
|
|
|
619 (defvar global-popup-menu nil
|
|
|
620 "The global popup menu. This is present in all modes.
|
|
|
621 See the function `popup-menu' for a description of menu syntax.")
|
|
|
622
|
|
|
623 (defvar mode-popup-menu nil
|
|
|
624 "The mode-specific popup menu. Automatically buffer local.
|
|
|
625 This is appended to the default items in `global-popup-menu'.
|
|
|
626 See the function `popup-menu' for a description of menu syntax.")
|
|
|
627 (make-variable-buffer-local 'mode-popup-menu)
|
|
|
628
|
|
|
629 (defvar activate-popup-menu-hook nil
|
|
|
630 "Function or functions run before a mode-specific popup menu is made visible.
|
|
|
631 These functions are called with no arguments, and should interrogate and
|
|
|
632 modify the value of `global-popup-menu' or `mode-popup-menu' as desired.
|
|
|
633 Note: this hook is only run if you use `popup-mode-menu' for activating the
|
|
|
634 global and mode-specific commands; if you have your own binding for button3,
|
|
|
635 this hook won't be run.")
|
|
|
636
|
|
|
637 (defvar last-popup-menu-event nil
|
|
|
638 "The mouse event that invoked the last popup menu.
|
|
|
639 NOTE: This is EXPERIMENTAL and may change at any time.")
|
|
|
640
|
|
|
641 (defun popup-mode-menu (&optional event)
|
|
|
642 "Pop up a menu of global and mode-specific commands.
|
|
|
643 The menu is computed by combining `global-popup-menu' and `mode-popup-menu'
|
|
|
644 with any items derived from the `context-menu' property of the extent where the
|
|
|
645 button was clicked."
|
|
|
646 (interactive "_e")
|
|
|
647 (setq last-popup-menu-event
|
|
|
648 (or (and event (button-event-p event) event)
|
|
|
649 (let* ((mouse-pos (mouse-position))
|
|
|
650 (win (car mouse-pos))
|
|
|
651 (x (cadr mouse-pos))
|
|
|
652 (y (cddr mouse-pos))
|
|
|
653 (edges (window-pixel-edges win))
|
|
|
654 (winx (first edges))
|
|
|
655 (winy (second edges))
|
|
|
656 (x (+ x winx))
|
|
|
657 (y (+ y winy)))
|
|
|
658 (make-event 'button-press
|
|
|
659 `(button 3 x ,x y ,y channel ,(window-frame win)
|
|
|
660 timestamp ,(current-event-timestamp
|
|
|
661 (cdfw-console win)))))))
|
|
|
662 (run-hooks 'activate-popup-menu-hook)
|
|
|
663 (let* ((context-window (and event (event-window event)))
|
|
|
664 (context-point (and event (event-point event)))
|
|
|
665 (context-extents (and context-window
|
|
|
666 context-point
|
|
|
667 (extents-at context-point
|
|
|
668 (window-buffer context-window)
|
|
|
669 'context-menu)))
|
|
|
670 (context-menu-items
|
|
|
671 (apply 'append (mapcar #'(lambda (extent)
|
|
|
672 (extent-property extent 'context-menu))
|
|
|
673 context-extents))))
|
|
|
674 (popup-menu
|
|
462
|
675 (progn
|
|
442
|
676 ;; Merge global-popup-menu and mode-popup-menu
|
|
462
|
677 (and mode-popup-menu (check-menu-syntax mode-popup-menu))
|
|
|
678 (let* ((mode-title (and (stringp (car mode-popup-menu))
|
|
|
679 (car mode-popup-menu)))
|
|
|
680 (mode-items (if mode-title (cdr mode-popup-menu)
|
|
|
681 mode-popup-menu))
|
|
|
682 (global-title (and (stringp (car global-popup-menu))
|
|
|
683 (car global-popup-menu)))
|
|
|
684 (global-items (if global-title (cdr global-popup-menu)
|
|
|
685 global-popup-menu))
|
|
442
|
686 mode-filters)
|
|
|
687 ;; Strip keywords from local menu for attaching them at the top
|
|
462
|
688 (while (and mode-items
|
|
|
689 (keywordp (car mode-items)))
|
|
442
|
690 ;; Push both keyword and its argument.
|
|
462
|
691 (push (pop mode-items) mode-filters)
|
|
|
692 (push (pop mode-items) mode-filters))
|
|
442
|
693 (setq mode-filters (nreverse mode-filters))
|
|
|
694 ;; If mode-filters contains a keyword already present in
|
|
|
695 ;; `global-popup-menu', you will probably lose.
|
|
462
|
696 (append (and popup-menu-titles
|
|
|
697 (cond (mode-title (list mode-title))
|
|
|
698 (global-title (list global-title))
|
|
|
699 (t "")))
|
|
442
|
700 mode-filters
|
|
462
|
701 context-menu-items
|
|
|
702 (and context-menu-items mode-items '("---"))
|
|
|
703 mode-items
|
|
|
704 (and (or context-menu-items mode-items)
|
|
|
705 global-items '("---" "---"))
|
|
|
706 (and global-title (list global-title))
|
|
|
707 global-items
|
|
|
708 ))))
|
|
442
|
709
|
|
|
710 (while (popup-up-p)
|
|
|
711 (dispatch-event (next-event)))
|
|
|
712
|
|
|
713 ))
|
|
444
|
714
|
|
442
|
715 (defun popup-buffer-menu (event)
|
|
502
|
716 "Pop up a copy of the menubar Buffers menu where the mouse is clicked."
|
|
442
|
717 (interactive "e")
|
|
|
718 (let ((window (and (event-over-text-area-p event) (event-window event)))
|
|
|
719 (bmenu nil))
|
|
|
720 (or window
|
|
|
721 (error "Pointer must be in a normal window"))
|
|
|
722 (select-window window)
|
|
|
723 (if current-menubar
|
|
|
724 (setq bmenu (assoc "%_Buffers" current-menubar)))
|
|
|
725 (if (null bmenu)
|
|
|
726 (setq bmenu (assoc "%_Buffers" default-menubar)))
|
|
|
727 (if (null bmenu)
|
|
|
728 (error "Can't find the Buffers menu"))
|
|
|
729 (popup-menu bmenu)))
|
|
|
730
|
|
|
731 (defun popup-menubar-menu (event)
|
|
|
732 "Pop up a copy of menu that also appears in the menubar."
|
|
|
733 (interactive "e")
|
|
|
734 (let ((window (and (event-over-text-area-p event) (event-window event)))
|
|
|
735 popup-menubar)
|
|
|
736 (or window
|
|
|
737 (error "Pointer must be in a normal window"))
|
|
|
738 (select-window window)
|
|
|
739 (and current-menubar (run-hooks 'activate-menubar-hook))
|
|
|
740 ;; #### Instead of having to copy this just to safely get rid of
|
|
|
741 ;; any nil what we should really do is fix up the internal menubar
|
|
|
742 ;; code to just ignore nil if generating a popup menu
|
|
|
743 (setq popup-menubar (delete nil (copy-sequence (or current-menubar
|
|
|
744 default-menubar))))
|
|
|
745 (popup-menu (cons "%_Menubar Menu" popup-menubar))
|
|
|
746 ))
|
|
|
747
|
|
|
748 (defun menu-call-at-event (form &optional event default-behavior-fallback)
|
|
|
749 "Call FORM while temporarily setting point to the position in EVENT.
|
|
|
750 NOTE: This is EXPERIMENTAL and may change at any time.
|
|
|
751
|
|
|
752 FORM is called the way forms in menu specs are: i.e. if a symbol, it's called
|
|
|
753 with `call-interactively', otherwise with `eval'. EVENT defaults to
|
|
|
754 `last-popup-menu-event', making this function especially useful in popup
|
|
|
755 menus. The buffer and point are set temporarily within a `save-excursion'.
|
|
|
756 If EVENT is not a mouse event, or was not over a buffer, nothing
|
|
|
757 happens unless DEFAULT-BEHAVIOR-FALLBACK is non-nil, in which case the
|
|
|
758 FORM is called normally."
|
|
|
759 (or event (setq event last-popup-menu-event))
|
|
|
760 (let ((buf (event-buffer event))
|
|
|
761 (p (event-closest-point event)))
|
|
|
762 (cond ((and buf p (> p 0))
|
|
|
763 (save-excursion
|
|
|
764 (set-buffer buf)
|
|
|
765 (goto-char p)
|
|
|
766 (if (symbolp form)
|
|
|
767 (call-interactively form)
|
|
|
768 (eval form))))
|
|
|
769 (default-behavior-fallback
|
|
|
770 (if (symbolp form)
|
|
|
771 (call-interactively form)
|
|
|
772 (eval form))))))
|
|
|
773
|
|
|
774 (global-set-key 'button3 'popup-mode-menu)
|
|
|
775 ;; shift button3 and shift button2 are reserved for Hyperbole
|
|
|
776 (global-set-key '(meta control button3) 'popup-buffer-menu)
|
|
|
777 ;; The following command is way too dangerous with Custom.
|
|
|
778 ;; (global-set-key '(meta shift button3) 'popup-menubar-menu)
|
|
|
779
|
|
|
780 ;; Here's a test of the cool new menu features (from Stig).
|
|
|
781
|
|
|
782 ;;(setq mode-popup-menu
|
|
|
783 ;; '("Test Popup Menu"
|
|
|
784 ;; :filter cdr
|
|
|
785 ;; ["this item won't appear because of the menu filter" ding t]
|
|
|
786 ;; "--:singleLine"
|
|
|
787 ;; "singleLine"
|
|
|
788 ;; "--:doubleLine"
|
|
|
789 ;; "doubleLine"
|
|
|
790 ;; "--:singleDashedLine"
|
|
|
791 ;; "singleDashedLine"
|
|
|
792 ;; "--:doubleDashedLine"
|
|
|
793 ;; "doubleDashedLine"
|
|
|
794 ;; "--:noLine"
|
|
|
795 ;; "noLine"
|
|
|
796 ;; "--:shadowEtchedIn"
|
|
|
797 ;; "shadowEtchedIn"
|
|
|
798 ;; "--:shadowEtchedOut"
|
|
|
799 ;; "shadowEtchedOut"
|
|
|
800 ;; "--:shadowDoubleEtchedIn"
|
|
|
801 ;; "shadowDoubleEtchedIn"
|
|
|
802 ;; "--:shadowDoubleEtchedOut"
|
|
|
803 ;; "shadowDoubleEtchedOut"
|
|
|
804 ;; "--:shadowEtchedInDash"
|
|
|
805 ;; "shadowEtchedInDash"
|
|
|
806 ;; "--:shadowEtchedOutDash"
|
|
|
807 ;; "shadowEtchedOutDash"
|
|
|
808 ;; "--:shadowDoubleEtchedInDash"
|
|
|
809 ;; "shadowDoubleEtchedInDash"
|
|
|
810 ;; "--:shadowDoubleEtchedOutDash"
|
|
|
811 ;; "shadowDoubleEtchedOutDash"
|
|
|
812 ;; ))
|
|
|
813
|
|
428
|
814 (defun get-popup-menu-response (menu-desc &optional event)
|
|
|
815 "Pop up the given menu and wait for a response.
|
|
|
816 This blocks until the response is received, and returns the misc-user
|
|
|
817 event that encapsulates the response. To execute it, you can do
|
|
|
818 (funcall (event-function response) (event-object response))
|
|
|
819 If no response was received, nil is returned.
|
|
|
820
|
|
|
821 MENU-DESC and EVENT are as in the call to `popup-menu'."
|
|
|
822 ;; partially stolen from w3
|
|
707
|
823
|
|
|
824 ;; This function is way gross and assumes to much about menu
|
|
|
825 ;; processing that is X specific. Under mswindows popup menus behave
|
|
|
826 ;; in reasonable ways that you can't obstruct.
|
|
428
|
827 (let ((echo-keystrokes 0)
|
|
|
828 new-event)
|
|
|
829 (popup-menu menu-desc event)
|
|
|
830 (catch 'popup-done
|
|
|
831 (while t
|
|
|
832 (setq new-event (next-command-event new-event))
|
|
|
833 (cond ((misc-user-event-p new-event)
|
|
|
834 (throw 'popup-done new-event))
|
|
707
|
835 ((button-release-event-p new-event);; don't beep twice
|
|
|
836 nil)
|
|
|
837 ;; It shows how bogus this function is that the event
|
|
|
838 ;; arg could be missing and no-one noticed ...
|
|
|
839 ((event-matches-key-specifier-p new-event (quit-char))
|
|
|
840 (signal 'quit nil))
|
|
|
841 ;; mswindows has no pop-down processing (selection is
|
|
|
842 ;; atomic) so doing anything more makes no sense. Since
|
|
|
843 ;; popup-up-p is always false under mswindows, this
|
|
|
844 ;; function has been ordered to do essentially X-specifc
|
|
|
845 ;; processing after this check.
|
|
|
846 ((not (popup-up-p))
|
|
428
|
847 (setq unread-command-events (cons new-event
|
|
|
848 unread-command-events))
|
|
|
849 (throw 'popup-done nil))
|
|
707
|
850 ;; mswindows never gets here
|
|
428
|
851 (t
|
|
|
852 (beep)
|
|
|
853 (message "please make a choice from the menu.")))))))
|
|
|
854
|
|
|
855 (defun popup-menu-and-execute-in-window (menu-desc event)
|
|
|
856 "Pop up the given menu and execute its response in EVENT's window.
|
|
|
857 This blocks until the response is received, temporarily selects
|
|
|
858 EVENT's window, and executes the command specified in the response.
|
|
|
859 EVENT can also be a window. See `popup-menu' for the semantics of
|
|
|
860 MENU-DESC."
|
|
|
861 (let ((response
|
|
|
862 (get-popup-menu-response menu-desc
|
|
|
863 (and (eventp event) event))))
|
|
|
864 (and (misc-user-event-p response)
|
|
|
865 (save-selected-window
|
|
|
866 (select-window (if (windowp event) event
|
|
|
867 (event-window event)))
|
|
|
868 (funcall (event-function response)
|
|
|
869 (event-object response))))))
|
|
|
870
|
|
|
871 ;; provide default bindings for menu accelerator map
|
|
|
872 (and (boundp 'menu-accelerator-map)
|
|
|
873 (keymapp menu-accelerator-map)
|
|
|
874 (progn
|
|
|
875 (define-key menu-accelerator-map "\e" 'menu-escape)
|
|
|
876 (define-key menu-accelerator-map [left] 'menu-left)
|
|
|
877 (define-key menu-accelerator-map [right] 'menu-right)
|
|
|
878 (define-key menu-accelerator-map [up] 'menu-up)
|
|
|
879 (define-key menu-accelerator-map [down] 'menu-down)
|
|
|
880 (define-key menu-accelerator-map [return] 'menu-select)
|
|
502
|
881 (define-key menu-accelerator-map [kp-down] 'menu-down)
|
|
|
882 (define-key menu-accelerator-map [kp-up] 'menu-down)
|
|
|
883 (define-key menu-accelerator-map [kp-left] 'menu-left)
|
|
|
884 (define-key menu-accelerator-map [kp-right] 'menu-right)
|
|
|
885 (define-key menu-accelerator-map [kp-enter] 'menu-select)
|
|
428
|
886 (define-key menu-accelerator-map "\C-g" 'menu-quit)))
|
|
|
887
|
|
|
888
|
|
|
889 (provide 'menubar)
|
|
|
890
|
|
|
891 ;;; menubar.el ends here
|
