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428
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1 ;;; modeline.el --- modeline hackery.
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2
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3 ;; Copyright (C) 1988, 1992-1994, 1997 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1995, 1996 Ben Wing.
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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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438
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22 ;; along with XEmacs; see the file COPYING. If not, write to the
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428
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23 ;; Free Software Foundation, 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 in FSF.
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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 ;;; Code:
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33
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34 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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35 ;;; General mouse modeline stuff ;;;
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36 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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37
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38 (defgroup modeline nil
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39 "Modeline customizations."
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40 :group 'environment)
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41
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442
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42 (defcustom modeline-3d-p ;; added for the options menu
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43 (let ((thickness
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44 (specifier-instance modeline-shadow-thickness)))
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45 (and (integerp thickness)
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46 (> thickness 0)))
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47 "Whether the default toolbar is globally visible. This option can be
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48 customized through the options menu."
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49 :group 'display
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50 :type 'boolean
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51 :set #'(lambda (var val)
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52 (if val
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53 (set-specifier modeline-shadow-thickness 2)
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54 (set-specifier modeline-shadow-thickness 0))
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55 (redraw-modeline t)
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56 (setq modeline-3d-p val))
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57 )
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58
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428
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59 (defcustom drag-divider-event-lag 150
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60 "*The pause (in msecs) between divider drag events before redisplaying.
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61 If this value is too small, dragging will be choppy because redisplay cannot
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62 keep up. If it is too large, dragging will be choppy because of the explicit
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63 redisplay delay specified."
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64 :type 'integer
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65 ;; #### Fix group.
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66 :group 'modeline)
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67
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68 (define-obsolete-variable-alias
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69 'drag-modeline-event-lag
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70 'drag-divider-event-lag)
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71
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72 (defcustom modeline-click-swaps-buffers nil
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73 "*If non-nil, clicking on the modeline changes the current buffer.
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74 Click on the left half of the modeline cycles forward through the
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75 buffer list and clicking on the right half cycles backward."
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76 :type 'boolean
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77 :group 'modeline)
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78
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438
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79 (defcustom modeline-scrolling-method nil
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80 "*If non-nil, dragging the modeline with the mouse may also scroll its
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81 text horizontally (vertical motion controls window resizing and horizontal
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82 motion controls modeline scrolling).
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83
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84 With a value of t, the modeline text is scrolled in the same direction as
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85 the mouse motion. With a value of 'scrollbar, the modeline is considered as
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86 a scrollbar for its own text, which then moves in the opposite direction."
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87 :type '(choice (const :tag "none" nil)
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88 (const :tag "text" t)
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89 (const :tag "scrollbar" scrollbar))
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90 :set (lambda (sym val)
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91 (set-default sym val)
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92 (when (featurep 'x)
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93 (cond ((eq val t)
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94 (set-glyph-image modeline-pointer-glyph "hand2" 'global 'x))
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95 ((eq val 'scrollbar)
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96 (set-glyph-image modeline-pointer-glyph "fleur" 'global 'x))
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97 (t
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98 (set-glyph-image modeline-pointer-glyph "sb_v_double_arrow"
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442
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99 'global 'x))))
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100 (when (featurep 'mswindows)
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101 (cond ((eq val t)
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102 (set-glyph-image modeline-pointer-glyph
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103 [mswindows-resource :resource-type cursor
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104 :resource-id "SizeAll"]
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105 'global 'mswindows))
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106 ((eq val 'scrollbar)
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107 (set-glyph-image modeline-pointer-glyph
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108 [mswindows-resource :resource-type cursor
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109 :resource-id "Normal"]
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110 'global 'mswindows))
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111 (t
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112 (set-glyph-image modeline-pointer-glyph
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113 [mswindows-resource :resource-type cursor
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114 :resource-id "SizeNS"]
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115 'global 'mswindows)))))
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438
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116 :group 'modeline)
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117
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428
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118 (defun mouse-drag-modeline (event)
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119 "Resize a window by dragging its modeline.
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120 This command should be bound to a button-press event in modeline-map.
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121 Holding down a mouse button and moving the mouse up and down will
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438
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122 make the clicked-on window taller or shorter.
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123
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124 See also the variable `modeline-scrolling-method'."
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428
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125 (interactive "e")
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126 (or (button-press-event-p event)
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127 (error "%s must be invoked by a mouse-press" this-command))
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128 (or (event-over-modeline-p event)
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129 (error "not over a modeline"))
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130 ;; Give the modeline a "pressed" look. --hniksic
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131 (let-specifier ((modeline-shadow-thickness
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132 (- (specifier-instance modeline-shadow-thickness
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133 (event-window event)))
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134 (event-window event)))
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135 (let ((done nil)
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136 (depress-line (event-y event))
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137 (start-event-frame (event-frame event))
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138 (start-event-window (event-window event))
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139 (start-nwindows (count-windows t))
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438
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140 (hscroll-delta (face-width 'modeline))
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141 (start-hscroll (modeline-hscroll (event-window event)))
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142 (start-x-pixel (event-x-pixel event))
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428
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143 (last-timestamp 0)
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144 default-line-height
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145 modeline-height
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146 should-enlarge-minibuffer
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147 event min-height minibuffer y top bot edges wconfig growth)
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148 (setq minibuffer (minibuffer-window start-event-frame)
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149 default-line-height (face-height 'default start-event-window)
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150 min-height (+ (* window-min-height default-line-height)
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151 ;; Don't let the window shrink by a
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152 ;; non-multiple of the default line
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153 ;; height. (enlarge-window -1) will do
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154 ;; this if the difference between the
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155 ;; current window height and the minimum
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156 ;; window height is less than the height
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157 ;; of the default font. These extra
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158 ;; lost pixels of height don't come back
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159 ;; if you grow the window again. This
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160 ;; can make it impossible to drag back
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161 ;; to the exact original size, which is
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162 ;; disconcerting.
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163 (% (window-pixel-height start-event-window)
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164 default-line-height))
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165 modeline-height
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166 (if (specifier-instance has-modeline-p start-event-window)
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167 (+ (face-height 'modeline start-event-window)
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168 (* 2 (specifier-instance modeline-shadow-thickness
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169 start-event-window)))
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170 (* 2 (specifier-instance modeline-shadow-thickness
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171 start-event-window))))
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172 (if (not (eq (window-frame minibuffer) start-event-frame))
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173 (setq minibuffer nil))
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174 (if (and (null minibuffer) (one-window-p t))
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175 (error "Attempt to resize sole window"))
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176 ;; if this is the bottommost ordinary window, then to
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177 ;; move its modeline the minibuffer must be enlarged.
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178 (setq should-enlarge-minibuffer
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179 (and minibuffer (window-lowest-p start-event-window)))
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180 ;; loop reading events
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181 (while (not done)
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182 (setq event (next-event event))
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183 ;; requeue event and quit if this is a misc-user, eval or
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184 ;; keypress event.
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185 ;; quit if this is a button press or release event, or if the event
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186 ;; occurred in some other frame.
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187 ;; drag if this is a mouse motion event and the time
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188 ;; between this event and the last event is greater than
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189 ;; drag-divider-event-lag.
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190 ;; do nothing if this is any other kind of event.
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191 (cond ((or (misc-user-event-p event)
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192 (key-press-event-p event))
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193 (setq unread-command-events (nconc unread-command-events
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194 (list event))
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195 done t))
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196 ((button-release-event-p event)
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197 (setq done t)
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198 ;; Consider we have a mouse click neither X pos (modeline
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199 ;; scroll) nore Y pos (modeline drag) have changed.
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200 (and modeline-click-swaps-buffers
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201 (= depress-line (event-y event))
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438
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202 (or (not modeline-scrolling-method)
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203 (= start-hscroll
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204 (modeline-hscroll start-event-window)))
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428
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205 (modeline-swap-buffers event)))
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206 ((button-event-p event)
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207 (setq done t))
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208 ((not (motion-event-p event))
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209 (dispatch-event event))
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210 ((not (eq start-event-frame (event-frame event)))
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211 (setq done t))
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212 ((< (abs (- (event-timestamp event) last-timestamp))
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213 drag-divider-event-lag)
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214 nil)
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215 (t
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438
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216 (when modeline-scrolling-method
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217 (let ((delta (/ (- (event-x-pixel event) start-x-pixel)
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218 hscroll-delta)))
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219 (set-modeline-hscroll start-event-window
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220 (if (eq modeline-scrolling-method t)
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221 (- start-hscroll delta)
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222 (+ start-hscroll delta)))
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223 ))
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428
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224 (setq last-timestamp (event-timestamp event)
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225 y (event-y-pixel event)
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226 edges (window-pixel-edges start-event-window)
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227 top (nth 1 edges)
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228 bot (nth 3 edges))
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229 ;; scale back a move that would make the
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230 ;; window too short.
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231 (cond ((< (- y top (- modeline-height)) min-height)
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232 (setq y (+ top min-height (- modeline-height)))))
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233 ;; compute size change needed
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234 (setq growth (- y bot (/ (- modeline-height) 2))
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235 wconfig (current-window-configuration))
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236 ;; grow/shrink minibuffer?
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237 (if should-enlarge-minibuffer
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238 (progn
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239 ;; yes. scale back shrinkage if it
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240 ;; would make the minibuffer less than 1
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241 ;; line tall.
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242 ;;
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243 ;; also flip the sign of the computed growth,
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244 ;; since if we want to grow the window with the
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245 ;; modeline we need to shrink the minibuffer
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246 ;; and vice versa.
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247 (if (and (> growth 0)
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248 (< (- (window-pixel-height minibuffer)
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249 growth)
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250 default-line-height))
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251 (setq growth
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252 (- (window-pixel-height minibuffer)
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253 default-line-height)))
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254 (setq growth (- growth))))
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255 ;; window grow and shrink by lines not pixels, so
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256 ;; divide the pixel height by the height of the
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257 ;; default face.
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258 (setq growth (/ growth default-line-height))
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259 ;; grow/shrink the window
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260 (enlarge-window growth nil (if should-enlarge-minibuffer
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261 minibuffer
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262 start-event-window))
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263 ;; if this window's growth caused another
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264 ;; window to be deleted because it was too
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265 ;; short, rescind the change.
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266 ;;
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267 ;; if size change caused space to be stolen
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268 ;; from a window above this one, rescind the
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269 ;; change, but only if we didn't grow/shrink
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270 ;; the minibuffer. minibuffer size changes
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271 ;; can cause all windows to shrink... no way
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272 ;; around it.
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273 (if (or (/= start-nwindows (count-windows t))
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274 (and (not should-enlarge-minibuffer)
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275 (/= top (nth 1 (window-pixel-edges
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276 start-event-window)))))
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277 (set-window-configuration wconfig))))))))
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278
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279 ;; from Bob Weiner (bob_weiner@pts.mot.com)
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280 ;; Whether this function should be called is now decided in
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281 ;; mouse-drag-modeline - dverna feb. 98
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282 (defun modeline-swap-buffers (event)
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283 "Handle mouse clicks on modeline by switching buffers.
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284 If click on left half of a frame's modeline, bury current buffer.
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285 If click on right half of a frame's modeline, raise bottommost buffer.
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286 Arg EVENT is the button release event that occurred on the modeline."
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287 (or (event-over-modeline-p event)
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288 (error "not over a modeline"))
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289 (or (button-release-event-p event)
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290 (error "not a button release event"))
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291 (if (< (event-x event) (/ (window-width (event-window event)) 2))
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292 ;; On left half of modeline, bury current buffer,
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293 ;; displaying second buffer on list.
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294 (mouse-bury-buffer event)
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295 ;; On right half of modeline, raise and display bottommost
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296 ;; buffer in buffer list.
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297 (mouse-unbury-buffer event)))
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298
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299 (defconst modeline-menu
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300 '("Window Commands"
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301 ["Delete Window Above" delete-window t]
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302 ["Delete Other Windows" delete-other-windows t]
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303 ["Split Window Above" split-window-vertically t]
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304 ["Split Window Horizontally" split-window-horizontally t]
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305 ["Balance Windows" balance-windows t]
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306 ))
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307
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308 (defun modeline-menu (event)
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309 (interactive "e")
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310 (popup-menu-and-execute-in-window
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311 (cons (format "Window Commands for %S:"
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312 (buffer-name (event-buffer event)))
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313 (cdr modeline-menu))
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314 event))
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315
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316 (defvar modeline-map (make-sparse-keymap 'modeline-map)
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317 "Keymap consulted for mouse-clicks on the modeline of a window.
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318 This variable may be buffer-local; its value will be looked up in
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319 the buffer of the window whose modeline was clicked upon.")
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320
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321 (define-key modeline-map 'button1 'mouse-drag-modeline)
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322 ;; button2 selects the window without setting point
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323 (define-key modeline-map 'button2 (lambda () (interactive "@")))
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324 (define-key modeline-map 'button3 'modeline-menu)
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325
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326 (make-face 'modeline-mousable "Face for mousable portions of the modeline.")
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327 (set-face-parent 'modeline-mousable 'modeline nil '(default))
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328 (when (featurep 'window-system)
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440
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329 (set-face-foreground 'modeline-mousable "firebrick" nil '(default color win))
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330 (set-face-font 'modeline-mousable [bold] nil '(default mono win))
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331 (set-face-font 'modeline-mousable [bold] nil '(default grayscale win)))
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428
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332
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333 (defmacro make-modeline-command-wrapper (command)
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334 `#'(lambda (event)
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335 (interactive "e")
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336 (save-selected-window
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337 (select-window (event-window event))
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338 (call-interactively ',(eval command)))))
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339
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340 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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341 ;;; Minor modes ;;;
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342 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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343
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344 (defvar minor-mode-alist nil
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345 "Alist saying how to show minor modes in the modeline.
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346 Each element looks like (VARIABLE STRING);
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347 STRING is included in the modeline iff VARIABLE's value is non-nil.
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348
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349 Actually, STRING need not be a string; any possible modeline element
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350 is okay. See `modeline-format'.")
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351
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352 ;; Used by C code (lookup-key and friends) but defined here.
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353 (defvar minor-mode-map-alist nil
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354 "Alist of keymaps to use for minor modes.
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355 Each element looks like (VARIABLE . KEYMAP); KEYMAP is used to read
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356 key sequences and look up bindings iff VARIABLE's value is non-nil.
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357 If two active keymaps bind the same key, the keymap appearing earlier
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358 in the list takes precedence.")
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359
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360 (make-face 'modeline-mousable-minor-mode
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361 "Face for mousable minor-mode strings in the modeline.")
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362 (set-face-parent 'modeline-mousable-minor-mode 'modeline-mousable nil
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363 '(default))
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364 (when (featurep 'window-system)
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440
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365 (set-face-foreground 'modeline-mousable-minor-mode '("green4" "forestgreen")
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366 nil '(default color win)))
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428
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367
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368 (defvar modeline-mousable-minor-mode-extent (make-extent nil nil)
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369 ;; alliteration at its finest.
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370 "Extent managing the mousable minor mode modeline strings.")
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371 (set-extent-face modeline-mousable-minor-mode-extent
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372 'modeline-mousable-minor-mode)
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373
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374 ;; This replaces the idiom
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375 ;;
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376 ;; (or (assq 'isearch-mode minor-mode-alist)
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377 ;; (setq minor-mode-alist
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378 ;; (purecopy
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379 ;; (append minor-mode-alist
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380 ;; '((isearch-mode isearch-mode))))))
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381
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382 (defun add-minor-mode (toggle name &optional keymap after toggle-fun)
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383 "Add a minor mode to `minor-mode-alist' and `minor-mode-map-alist'.
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384
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385 TOGGLE is a symbol whose value as a variable specifies whether the
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386 minor mode is active.
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387
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388 NAME is the name that should appear in the modeline. It should either
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389 be a string beginning with a space, or a symbol with a similar string
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390 as its value.
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391
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392 KEYMAP is a keymap to make active when the minor mode is active.
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393
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394 AFTER is the toggling symbol used for another minor mode. If AFTER is
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395 non-nil, then it is used to position the new mode in the minor-mode
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396 alists.
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397
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398 TOGGLE-FUN specifies an interactive function that is called to toggle
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399 the mode on and off; this affects what happens when button2 is pressed
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400 on the mode, and when button3 is pressed somewhere in the list of
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401 modes. If TOGGLE-FUN is nil and TOGGLE names an interactive function,
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402 TOGGLE is used as the toggle function.
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403
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404 Example: (add-minor-mode 'view-minor-mode \" View\" view-mode-map)"
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405 (let* ((add-elt #'(lambda (elt sym)
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406 (let (place)
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407 (cond ((null after) ; add to front
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408 (push elt (symbol-value sym)))
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409 ((and (not (eq after t))
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410 (setq place (memq (assq after
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411 (symbol-value sym))
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412 (symbol-value sym))))
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413 (push elt (cdr place)))
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414 (t
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415 (set sym (append (symbol-value sym)
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416 (list elt))))))
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417 (symbol-value sym)))
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418 el toggle-keymap)
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419 (if toggle-fun
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420 (check-argument-type 'commandp toggle-fun)
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421 (when (commandp toggle)
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422 (setq toggle-fun toggle)))
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423 (when (and toggle-fun name)
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424 (setq toggle-keymap (make-sparse-keymap
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425 (intern (concat "modeline-minor-"
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426 (symbol-name toggle)
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427 "-map"))))
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428 (define-key toggle-keymap 'button2
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429 ;; defeat the DUMB-ASS byte-compiler, which tries to
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430 ;; expand the macro at compile time and fucks up.
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431 (eval '(make-modeline-command-wrapper toggle-fun)))
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432 (put toggle 'modeline-toggle-function toggle-fun))
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433 (when name
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434 (let ((hacked-name
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435 (if toggle-keymap
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436 (cons (let ((extent (make-extent nil nil)))
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437 (set-extent-keymap extent toggle-keymap)
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438 (set-extent-property
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439 extent 'help-echo
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440 (concat "button2 turns off "
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441 (if (symbolp toggle-fun)
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442 (symbol-name toggle-fun)
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443 (symbol-name toggle))))
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444 extent)
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445 (cons modeline-mousable-minor-mode-extent name))
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446 name)))
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447 (if (setq el (assq toggle minor-mode-alist))
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448 (setcdr el (list hacked-name))
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438
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449 (funcall add-elt
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428
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450 (list toggle hacked-name)
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451 'minor-mode-alist))))
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452 (when keymap
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453 (if (setq el (assq toggle minor-mode-map-alist))
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454 (setcdr el keymap)
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455 (funcall add-elt
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456 (cons toggle keymap)
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457 'minor-mode-map-alist)))))
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458
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459 ;; #### TODO: Add `:menu-tag' keyword to add-minor-mode. Or create a
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460 ;; separate function to manage the minor mode menu.
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461
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462 ;(put 'abbrev-mode :menu-tag "Abbreviation Expansion")
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463 (add-minor-mode 'abbrev-mode " Abbrev")
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464 ;; only when visiting a file...
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465 (add-minor-mode 'overwrite-mode 'overwrite-mode)
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466 ;(put 'auto-fill-function :menu-tag "Auto Fill")
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467 (add-minor-mode 'auto-fill-function " Fill" nil nil 'auto-fill-mode)
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468
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469 ;(put 'defining-kbd-macro :menu-tag "Keyboard Macro")
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470 (add-minor-mode 'defining-kbd-macro " Def" nil nil
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471 (lambda ()
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472 (interactive)
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473 (if defining-kbd-macro
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474 (progn
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475 ;; #### This means to disregard the last event.
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476 ;; It is needed because the last recorded
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477 ;; event is usually the mouse event that
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478 ;; invoked the menu item (and this function),
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479 ;; and having it in the macro causes problems.
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480 (zap-last-kbd-macro-event)
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481 (end-kbd-macro nil))
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482 (start-kbd-macro nil))))
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483
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484 (defun modeline-minor-mode-menu (event)
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485 "The menu that pops up when you press `button3' inside the
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486 parentheses on the modeline."
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487 (interactive "e")
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488 (save-excursion
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489 (set-buffer (event-buffer event))
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490 (popup-menu-and-execute-in-window
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491 (cons
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492 "Minor Mode Toggles"
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493 (sort
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494 (delq nil (mapcar
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495 #'(lambda (x)
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496 (let* ((toggle-sym (car x))
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497 (toggle-fun (or (get toggle-sym
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498 'modeline-toggle-function)
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499 (and (commandp toggle-sym)
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500 toggle-sym)))
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501 (menu-tag (symbol-name (if (symbolp toggle-fun)
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502 toggle-fun
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503 toggle-sym))
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504 ;; Here a function should
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505 ;; maybe be invoked to
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506 ;; beautify the symbol's
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507 ;; menu appearance.
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508 ))
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509 (and toggle-fun
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510 (vector menu-tag
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511 toggle-fun
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512 ;; The following two are wrong
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513 ;; because of possible name
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514 ;; clashes.
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515 ;:active (get toggle-sym :active t)
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516 ;:included (get toggle-sym :included t)
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517 :style 'toggle
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518 :selected (and (boundp toggle-sym)
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519 toggle-sym)))))
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520 minor-mode-alist))
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521 (lambda (e1 e2)
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522 (string< (aref e1 0) (aref e2 0)))))
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523 event)))
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524
|
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525 (defvar modeline-minor-mode-map (make-sparse-keymap 'modeline-minor-mode-map)
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526 "Keymap consulted for mouse-clicks on the minor-mode modeline list.")
|
|
|
527 (define-key modeline-minor-mode-map 'button3 'modeline-minor-mode-menu)
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|
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528
|
|
|
529 (defvar modeline-minor-mode-extent (make-extent nil nil)
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530 "Extent covering the minor mode modeline strings.")
|
|
|
531 (set-extent-face modeline-minor-mode-extent 'modeline-mousable)
|
|
|
532 (set-extent-keymap modeline-minor-mode-extent modeline-minor-mode-map)
|
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|
533
|
|
|
534
|
|
|
535 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
536 ;;; Other ;;;
|
|
|
537 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
538
|
|
|
539 (defun modeline-buffers-menu (event)
|
|
|
540 (interactive "e")
|
|
|
541 (popup-menu-and-execute-in-window
|
|
|
542 '("Buffers Popup Menu"
|
|
|
543 :filter buffers-menu-filter
|
|
|
544 ["List All Buffers" list-buffers t]
|
|
|
545 "--"
|
|
|
546 )
|
|
|
547 event))
|
|
|
548
|
|
|
549 (defvar modeline-buffer-id-left-map
|
|
|
550 (make-sparse-keymap 'modeline-buffer-id-left-map)
|
|
|
551 "Keymap consulted for mouse-clicks on the left half of the buffer-id string.")
|
|
|
552
|
|
|
553 (defvar modeline-buffer-id-right-map
|
|
|
554 (make-sparse-keymap 'modeline-buffer-id-right-map)
|
|
|
555 "Keymap consulted for mouse-clicks on the right half of the buffer-id string.")
|
|
|
556
|
|
|
557 (define-key modeline-buffer-id-left-map 'button2 'mouse-unbury-buffer)
|
|
|
558 (define-key modeline-buffer-id-right-map 'button2 'mouse-bury-buffer)
|
|
|
559 (define-key modeline-buffer-id-left-map 'button3 'modeline-buffers-menu)
|
|
|
560 (define-key modeline-buffer-id-right-map 'button3 'modeline-buffers-menu)
|
|
|
561
|
|
|
562 (make-face 'modeline-buffer-id
|
|
|
563 "Face for the buffer ID string in the modeline.")
|
|
|
564 (set-face-parent 'modeline-buffer-id 'modeline nil '(default))
|
|
|
565 (when (featurep 'window-system)
|
|
440
|
566 (set-face-foreground 'modeline-buffer-id "blue4" nil '(default color win))
|
|
|
567 (set-face-font 'modeline-buffer-id [bold-italic] nil '(default mono win))
|
|
|
568 (set-face-font 'modeline-buffer-id [bold-italic] nil '(default grayscale win)))
|
|
428
|
569 (when (featurep 'tty)
|
|
|
570 (set-face-font 'modeline-buffer-id [bold-italic] nil '(default tty)))
|
|
|
571
|
|
|
572 (defvar modeline-buffer-id-extent (make-extent nil nil)
|
|
|
573 "Extent covering the whole of the buffer-id string.")
|
|
|
574 (set-extent-face modeline-buffer-id-extent 'modeline-buffer-id)
|
|
438
|
575
|
|
428
|
576 (defvar modeline-buffer-id-left-extent (make-extent nil nil)
|
|
|
577 "Extent covering the left half of the buffer-id string.")
|
|
|
578 (set-extent-keymap modeline-buffer-id-left-extent
|
|
|
579 modeline-buffer-id-left-map)
|
|
|
580 (set-extent-property modeline-buffer-id-left-extent 'help-echo
|
|
|
581 "button2 cycles to the previous buffer")
|
|
|
582
|
|
|
583 (defvar modeline-buffer-id-right-extent (make-extent nil nil)
|
|
|
584 "Extent covering the right half of the buffer-id string.")
|
|
|
585 (set-extent-keymap modeline-buffer-id-right-extent
|
|
|
586 modeline-buffer-id-right-map)
|
|
|
587 (set-extent-property modeline-buffer-id-right-extent 'help-echo
|
|
|
588 "button2 cycles to the next buffer")
|
|
|
589
|
|
|
590 (defconst modeline-buffer-identification
|
|
444
|
591 (list (cons modeline-buffer-id-left-extent "XEmacs%N:")
|
|
428
|
592 ; this used to be "XEmacs:"
|
|
444
|
593 (cons modeline-buffer-id-right-extent " %17b"))
|
|
428
|
594 "Modeline control for identifying the buffer being displayed.
|
|
442
|
595 Its default value is
|
|
|
596
|
|
444
|
597 (list (cons modeline-buffer-id-left-extent \"XEmacs%N:\")
|
|
|
598 (cons modeline-buffer-id-right-extent \" %17b\")))
|
|
442
|
599
|
|
|
600 Major modes that edit things other than ordinary files may change this
|
|
|
601 (e.g. Info, Dired,...).")
|
|
428
|
602 (make-variable-buffer-local 'modeline-buffer-identification)
|
|
|
603
|
|
|
604 ;; These are for the sake of minor mode menu. #### All of this is
|
|
|
605 ;; kind of dirty. `add-minor-mode' started out as a simple substitute
|
|
|
606 ;; for (or (assq ...) ...) FSF stuff, but now is used for all kind of
|
|
|
607 ;; stuff. There should perhaps be a separate function to add toggles
|
|
|
608 ;; to the minor-mode-menu.
|
|
|
609 (add-minor-mode 'line-number-mode "")
|
|
|
610 (add-minor-mode 'column-number-mode "")
|
|
|
611
|
|
|
612 (defconst modeline-process nil
|
|
|
613 "Modeline control for displaying info on process status.
|
|
|
614 Normally nil in most modes, since there is no process to display.")
|
|
|
615 (make-variable-buffer-local 'modeline-process)
|
|
|
616
|
|
|
617 (defvar modeline-modified-map (make-sparse-keymap 'modeline-modified-map)
|
|
|
618 "Keymap consulted for mouse-clicks on the modeline-modified string.")
|
|
|
619 (define-key modeline-modified-map 'button2
|
|
|
620 (make-modeline-command-wrapper 'modeline-toggle-read-only))
|
|
|
621
|
|
|
622 (defvar modeline-modified-extent (make-extent nil nil)
|
|
|
623 "Extent covering the modeline-modified string.")
|
|
|
624 (set-extent-face modeline-modified-extent 'modeline-mousable)
|
|
|
625 (set-extent-keymap modeline-modified-extent modeline-modified-map)
|
|
|
626 (set-extent-property modeline-modified-extent 'help-echo
|
|
|
627 "button2 toggles the buffer's read-only status")
|
|
|
628
|
|
444
|
629 (defconst modeline-modified '("--%1*%1+-")
|
|
428
|
630 "Modeline control for displaying whether current buffer is modified.")
|
|
|
631 (make-variable-buffer-local 'modeline-modified)
|
|
|
632
|
|
|
633 (defvar modeline-narrowed-map (make-sparse-keymap 'modeline-narrowed-map)
|
|
|
634 "Keymap consulted for mouse-clicks on the modeline-narrowed string.")
|
|
|
635 (define-key modeline-narrowed-map 'button2
|
|
|
636 (make-modeline-command-wrapper 'widen))
|
|
|
637
|
|
|
638 (defvar modeline-narrowed-extent (make-extent nil nil)
|
|
|
639 "Extent covering the modeline-narrowed string.")
|
|
|
640 (set-extent-face modeline-narrowed-extent 'modeline-mousable)
|
|
|
641 (set-extent-keymap modeline-narrowed-extent modeline-narrowed-map)
|
|
|
642 (set-extent-property modeline-narrowed-extent 'help-echo
|
|
|
643 "button2 widens the buffer")
|
|
|
644
|
|
|
645 (setq-default
|
|
|
646 modeline-format
|
|
|
647 (list
|
|
444
|
648 ""
|
|
428
|
649 (cons modeline-modified-extent 'modeline-modified)
|
|
|
650 (cons modeline-buffer-id-extent 'modeline-buffer-identification)
|
|
444
|
651 " "
|
|
428
|
652 'global-mode-string
|
|
444
|
653 " %[("
|
|
428
|
654 (cons modeline-minor-mode-extent
|
|
444
|
655 (list "" 'mode-name 'minor-mode-alist))
|
|
|
656 (cons modeline-narrowed-extent "%n")
|
|
428
|
657 'modeline-process
|
|
444
|
658 ")%]----"
|
|
|
659 (list 'line-number-mode "L%l--")
|
|
|
660 (list 'column-number-mode "C%c--")
|
|
|
661 (cons -3 "%p")
|
|
|
662 "-%-"))
|
|
428
|
663
|
|
|
664 ;;; Added for XEmacs 20.3. Provide wrapper for vc since it may not always be
|
|
|
665 ;;; present, and its symbols are not visible this early in the dump if it
|
|
|
666 ;;; is.
|
|
|
667
|
|
|
668 (defun modeline-toggle-read-only ()
|
|
|
669 "Change whether this buffer is visiting its file read-only.
|
|
|
670 With arg, set read-only iff arg is positive.
|
|
|
671 This function is designed to be called when the read-only indicator on the
|
|
|
672 modeline is clicked. It will call `vc-toggle-read-only' if available,
|
|
|
673 otherwise it will call the usual `toggle-read-only'."
|
|
|
674 (interactive)
|
|
502
|
675 (if-fboundp 'vc-toggle-read-only
|
|
428
|
676 (vc-toggle-read-only)
|
|
|
677 (toggle-read-only)))
|
|
|
678
|
|
|
679 ;;; modeline.el ends here
|
