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1 ;;; custom.el -- Tools for declaring and initializing options.
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2 ;;
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3 ;; Copyright (C) 1996 Free Software Foundation, Inc.
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4 ;;
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5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
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6 ;; Keywords: help, faces
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7 ;; Version: 1.24
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8 ;; X-URL: http://www.dina.kvl.dk/~abraham/custom/
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9
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10 ;;; Commentary:
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11 ;;
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12 ;; If you want to use this code, please visit the URL above.
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13 ;;
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14 ;; This file only contain the code needed to declare and initialize
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15 ;; user options. The code to customize options is autoloaded from
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16 ;; `custom-edit.el'.
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17
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18 ;;; Code:
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19
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20 (require 'widget)
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21
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22 (define-widget-keywords :prefix :tag :load :link :options :type :group)
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23
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24 ;; These autoloads should be deleted when the file is added to Emacs
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25 (autoload 'customize "custom-edit" nil t)
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26 (autoload 'customize-variable "custom-edit" nil t)
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27 (autoload 'customize-face "custom-edit" nil t)
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28 (autoload 'customize-apropos "custom-edit" nil t)
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29 (autoload 'customize-customized "custom-edit" nil t)
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30 (autoload 'custom-buffer-create "custom-edit")
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31 (autoload 'custom-menu-update "custom-edit")
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32 (autoload 'custom-make-dependencies "custom-edit")
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33
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34 ;;; Compatibility.
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35
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36 (unless (fboundp 'x-color-values)
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37 ;; Emacs function missing in XEmacs 19.14.
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38 (defun x-color-values (color)
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39 "Return a description of the color named COLOR on frame FRAME.
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40 The value is a list of integer RGB values--(RED GREEN BLUE).
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41 These values appear to range from 0 to 65280 or 65535, depending
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42 on the system; white is (65280 65280 65280) or (65535 65535 65535).
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43 If FRAME is omitted or nil, use the selected frame."
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44 (color-instance-rgb-components (make-color-instance color))))
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45
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46 (unless (fboundp 'frame-property)
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47 ;; XEmacs function missing in Emacs 19.34.
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48 (defun frame-property (frame property &optional default)
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49 "Return FRAME's value for property PROPERTY."
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50 (or (cdr (assq property (frame-parameters frame)))
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51 default)))
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52
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53 (defun custom-background-mode ()
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54 "Kludge to detext background mode."
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55 (let* ((bg-resource
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56 (condition-case ()
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57 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
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58 (error nil)))
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59 color
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60 (mode (cond (bg-resource
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61 (intern (downcase bg-resource)))
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62 ((and (setq color (condition-case ()
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63 (or (frame-property
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64 (selected-frame)
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65 'background-color)
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66 (color-instance-name
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67 (specifier-instance
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68 (face-background 'default))))
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69 (error nil)))
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70 (< (apply '+ (x-color-values color))
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71 (/ (apply '+ (x-color-values "white"))
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72 3)))
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73 'dark)
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74 (t 'light))))
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75 (modify-frame-parameters (selected-frame)
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76 (list (cons 'background-mode mode)))
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77 mode))
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78
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79 ;; XEmacs and Emacs have different definitions of `facep'.
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80 ;; The Emacs definition is the useful one, so emulate that.
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81 (cond ((not (fboundp 'facep))
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82 (defun custom-facep (face)
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83 "No faces"
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84 nil))
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85 ((string-match "XEmacs" emacs-version)
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86 (defun custom-facep (face)
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87 "Face symbol or object."
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88 (or (facep face)
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89 (find-face face))))
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90 (t
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91 (defalias 'custom-facep 'facep)))
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92
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93 ;;; The `defcustom' Macro.
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94
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95 ;;;###autoload
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96 (defun custom-declare-variable (symbol value doc &rest args)
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97 "Like `defcustom', but SYMBOL and VALUE are evaluated as notmal arguments."
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98 (unless (and (default-boundp symbol)
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99 (not (get symbol 'saved-value)))
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100 (set-default symbol (if (get symbol 'saved-value)
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101 (eval (car (get symbol 'saved-value)))
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102 (eval value))))
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103 (put symbol 'factory-value (list value))
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104 (when doc
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105 (put symbol 'variable-documentation doc))
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106 (while args
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107 (let ((arg (car args)))
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108 (setq args (cdr args))
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109 (unless (symbolp arg)
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110 (error "Junk in args %S" args))
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111 (let ((keyword arg)
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112 (value (car args)))
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113 (unless args
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114 (error "Keyword %s is missing an argument" keyword))
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115 (setq args (cdr args))
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116 (cond ((eq keyword :type)
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117 (put symbol 'custom-type value))
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118 ((eq keyword :options)
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119 (if (get symbol 'custom-options)
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120 ;; Slow safe code to avoid duplicates.
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121 (mapcar (lambda (option)
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122 (custom-add-option symbol option))
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123 value)
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124 ;; Fast code for the common case.
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125 (put symbol 'custom-options (copy-list value))))
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126 (t
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127 (custom-handle-keyword symbol keyword value
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128 'custom-variable))))))
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129 (run-hooks 'custom-define-hook)
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130 symbol)
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131
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132 ;;;###autoload
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133 (defmacro defcustom (symbol value doc &rest args)
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134 "Declare SYMBOL as a customizable variable that defaults to VALUE.
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135 DOC is the variable documentation.
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136
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137 Neither SYMBOL nor VALUE needs to be quoted.
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138 If SYMBOL is not already bound, initialize it to VALUE.
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139 The remaining arguments should have the form
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140
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141 [KEYWORD VALUE]...
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142
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143 The following KEYWORD's are defined:
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144
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145 :type VALUE should be a widget type.
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146 :options VALUE should be a list of valid members of the widget type.
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147 :group VALUE should be a customization group.
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148 Add SYMBOL to that group.
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149
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150 Read the section about customization in the emacs lisp manual for more
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151 information."
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152 `(eval-and-compile
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153 (custom-declare-variable (quote ,symbol) (quote ,value) ,doc ,@args)))
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154
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155 ;;; The `defface' Macro.
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156
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157 ;;;###autoload
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158 (defun custom-declare-face (face spec doc &rest args)
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159 "Like `defface', but FACE is evaluated as a normal argument."
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160 (put face 'factory-face spec)
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161 (when (fboundp 'facep)
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162 (unless (and (custom-facep face)
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163 (not (get face 'saved-face)))
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164 ;; If the user has already created the face, respect that.
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165 (let ((value (or (get face 'saved-face) spec)))
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166 (custom-face-display-set face value))))
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167 (when doc
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168 (put face 'face-documentation doc))
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169 (custom-handle-all-keywords face args 'custom-face)
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170 (run-hooks 'custom-define-hook)
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171 face)
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172
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173 ;;;###autoload
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174 (defmacro defface (face spec doc &rest args)
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175 "Declare FACE as a customizable face that defaults to SPEC.
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176 FACE does not need to be quoted.
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177
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178 Third argument DOC is the face documentation.
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179
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180 If FACE has been set with `custom-set-face', set the face attributes
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181 as specified by that function, otherwise set the face attributes
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182 according to SPEC.
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183
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184 The remaining arguments should have the form
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185
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186 [KEYWORD VALUE]...
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187
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188 The following KEYWORD's are defined:
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189
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190 :group VALUE should be a customization group.
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191 Add FACE to that group.
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192
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193 SPEC should be an alist of the form ((DISPLAY ATTS)...).
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194
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195 ATTS is a list of face attributes and their values. The possible
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196 attributes are defined in the variable `custom-face-attributes'.
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197 Alternatively, ATTS can be a face in which case the attributes of that
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198 face is used.
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199
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200 The ATTS of the first entry in SPEC where the DISPLAY matches the
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201 frame should take effect in that frame. DISPLAY can either be the
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202 symbol `t', which will match all frames, or an alist of the form
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203 \((REQ ITEM...)...)
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204
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205 For the DISPLAY to match a FRAME, the REQ property of the frame must
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206 match one of the ITEM. The following REQ are defined:
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207
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208 `type' (the value of (window-system))
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209 Should be one of `x' or `tty'.
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210
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211 `class' (the frame's color support)
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212 Should be one of `color', `grayscale', or `mono'.
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213
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214 `background' (what color is used for the background text)
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215 Should be one of `light' or `dark'.
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216
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217 Read the section about customization in the emacs lisp manual for more
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218 information."
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219 `(custom-declare-face (quote ,face) ,spec ,doc ,@args))
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220
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221 ;;; The `defgroup' Macro.
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222
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223 ;;;###autoload
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224 (defun custom-declare-group (symbol members doc &rest args)
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225 "Like `defgroup', but SYMBOL is evaluated as a normal argument."
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226 (put symbol 'custom-group (nconc members (get symbol 'custom-group)))
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227 (when doc
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228 (put symbol 'group-documentation doc))
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229 (while args
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230 (let ((arg (car args)))
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231 (setq args (cdr args))
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232 (unless (symbolp arg)
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233 (error "Junk in args %S" args))
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234 (let ((keyword arg)
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235 (value (car args)))
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236 (unless args
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237 (error "Keyword %s is missing an argument" keyword))
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238 (setq args (cdr args))
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239 (cond ((eq keyword :prefix)
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240 (put symbol 'custom-prefix value))
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241 (t
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242 (custom-handle-keyword symbol keyword value
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243 'custom-group))))))
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244 (run-hooks 'custom-define-hook)
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245 symbol)
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246
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247 ;;;###autoload
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248 (defmacro defgroup (symbol members doc &rest args)
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249 "Declare SYMBOL as a customization group containing MEMBERS.
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250 SYMBOL does not need to be quoted.
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251
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252 Third arg DOC is the group documentation.
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253
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254 MEMBERS should be an alist of the form ((NAME WIDGET)...) where
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255 NAME is a symbol and WIDGET is a widget is a widget for editing that
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256 symbol. Useful widgets are `custom-variable' for editing variables,
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257 `custom-face' for edit faces, and `custom-group' for editing groups.
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258
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259 The remaining arguments should have the form
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260
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261 [KEYWORD VALUE]...
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262
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263 The following KEYWORD's are defined:
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264
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265 :group VALUE should be a customization group.
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266 Add SYMBOL to that group.
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267
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268 Read the section about customization in the emacs lisp manual for more
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269 information."
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270 `(custom-declare-group (quote ,symbol) ,members ,doc ,@args))
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271
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272 ;;;###autoload
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273 (defun custom-add-to-group (group option widget)
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274 "To existing GROUP add a new OPTION of type WIDGET,
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275 If there already is an entry for that option, overwrite it."
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276 (let* ((members (get group 'custom-group))
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277 (old (assq option members)))
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278 (if old
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279 (setcar (cdr old) widget)
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280 (put group 'custom-group (nconc members (list (list option widget)))))))
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281
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282 ;;; Properties.
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283
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284 (defun custom-handle-all-keywords (symbol args type)
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285 "For customization option SYMBOL, handle keyword arguments ARGS.
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286 Third argument TYPE is the custom option type."
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287 (while args
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288 (let ((arg (car args)))
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289 (setq args (cdr args))
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290 (unless (symbolp arg)
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291 (error "Junk in args %S" args))
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292 (let ((keyword arg)
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293 (value (car args)))
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294 (unless args
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295 (error "Keyword %s is missing an argument" keyword))
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296 (setq args (cdr args))
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297 (custom-handle-keyword symbol keyword value type)))))
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298
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299 (defun custom-handle-keyword (symbol keyword value type)
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300 "For customization option SYMBOL, handle KEYWORD with VALUE.
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301 Fourth argument TYPE is the custom option type."
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302 (cond ((eq keyword :group)
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303 (custom-add-to-group value symbol type))
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304 ((eq keyword :link)
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305 (custom-add-link symbol value))
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306 ((eq keyword :load)
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307 (custom-add-load symbol value))
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308 ((eq keyword :tag)
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309 (put symbol 'custom-tag value))
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310 (t
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311 (error "Unknown keyword %s" symbol))))
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312
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313 (defun custom-add-option (symbol option)
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314 "To the variable SYMBOL add OPTION.
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315
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316 If SYMBOL is a hook variable, OPTION should be a hook member.
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317 For other types variables, the effect is undefined."
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318 (let ((options (get symbol 'custom-options)))
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319 (unless (member option options)
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320 (put symbol 'custom-options (cons option options)))))
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321
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322 (defun custom-add-link (symbol widget)
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323 "To the custom option SYMBOL add the link WIDGET."
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324 (let ((links (get symbol 'custom-links)))
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325 (unless (member widget links)
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326 (put symbol 'custom-links (cons widget links)))))
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327
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328 (defun custom-add-load (symbol load)
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329 "To the custom option SYMBOL add the dependency LOAD.
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330 LOAD should be either a library file name, or a feature name."
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331 (let ((loads (get symbol 'custom-loads)))
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332 (unless (member load loads)
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333 (put symbol 'custom-loads (cons load loads)))))
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334
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335 ;;; Face Utilities.
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336
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337 (and (fboundp 'make-face)
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338 (make-face 'custom-face-empty))
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339
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340 (defun custom-face-display-set (face spec &optional frame)
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341 "Set FACE to the attributes to the first matching entry in SPEC.
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342 Iff optional FRAME is non-nil, set it for that frame only.
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343 See `defface' for information about SPEC."
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344 (when (fboundp 'copy-face)
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345 (copy-face 'custom-face-empty face)
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346 (while spec
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347 (let* ((entry (car spec))
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348 (display (nth 0 entry))
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349 (atts (nth 1 entry)))
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350 (setq spec (cdr spec))
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351 (when (custom-display-match-frame display frame)
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352 (apply 'custom-face-attribites-set face frame atts)
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353 (setq spec nil))))))
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354
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355 (defcustom custom-background-mode nil
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356 "The brightness of the background.
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357 Set this to the symbol dark if your background color is dark, light if
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358 your background is light, or nil (default) if you want Emacs to
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359 examine the brightness for you."
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360 :group 'customize
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361 :type '(choice (choice-item dark)
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362 (choice-item light)
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363 (choice-item :tag "default" nil)))
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364
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365 (defun custom-display-match-frame (display frame)
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366 "Non-nil iff DISPLAY matches FRAME.
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367 If FRAME is nil, the current FRAME is used."
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368 ;; This is a kludge to get started, we really should use specifiers!
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369 (unless frame
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370 (setq frame (selected-frame)))
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371 (if (eq display t)
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372 t
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373 (let ((match t))
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374 (while (and display match)
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375 (let* ((entry (car display))
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376 (req (car entry))
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377 (options (cdr entry)))
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378 (setq display (cdr display))
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379 (cond ((eq req 'type)
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380 (let ((type (if (fboundp 'device-type)
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381 (device-type (frame-device frame))
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382 window-system)))
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383 (setq match (memq type options))))
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384 ((eq req 'class)
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385 (let ((class (if (fboundp 'device-class)
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386 (device-class (frame-device frame))
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387 (frame-property frame 'display-type))))
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388 (setq match (memq class options))))
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389 ((eq req 'background)
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390 (let ((background (or custom-background-mode
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391 (frame-property frame 'background-mode)
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392 (custom-background-mode))))
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393 (setq match (memq background options))))
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394 (t
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395 (error "Unknown req `%S' with options `%S'" req options)))))
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396 match)))
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397
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398 (defconst custom-face-attributes
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399 '((:bold (toggle :format "Bold: %v") custom-set-face-bold)
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400 (:italic (toggle :format "Italic: %v") custom-set-face-italic)
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401 (:underline
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402 (toggle :format "Underline: %v") set-face-underline-p)
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403 (:foreground (color :tag "Foreground") set-face-foreground)
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404 (:background (color :tag "Background") set-face-background)
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405 (:stipple (editable-field :format "Stipple: %v") set-face-stipple))
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406 "Alist of face attributes.
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407
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408 The elements are of the form (KEY TYPE SET) where KEY is a symbol
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409 identifying the attribute, TYPE is a widget type for editing the
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410 attibute, SET is a function for setting the attribute value.
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411
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412 The SET function should take three arguments, the face to modify, the
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413 value of the attribute, and optionally the frame where the face should
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414 be changed.")
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415
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416 (when (string-match "XEmacs" emacs-version)
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417 ;; Support for special XEmacs font attributes.
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418 (require 'font)
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419
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420 (unless (fboundp 'face-font-name)
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421 (defun face-font-name (face &rest args)
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422 (apply 'face-font face args)))
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423
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424 (defun set-face-font-size (face size &rest args)
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425 "Set the font of FACE to SIZE"
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426 (let* ((font (apply 'face-font-name face args))
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427 (fontobj (font-create-object font)))
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428 (set-font-size fontobj size)
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429 (apply 'set-face-font face fontobj args)))
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430
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431 (defun set-face-font-family (face family &rest args)
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432 "Set the font of FACE to FAMILY"
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433 (let* ((font (apply 'face-font-name face args))
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434 (fontobj (font-create-object font)))
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435 (set-font-family fontobj family)
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436 (apply 'set-face-font face fontobj args)))
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437
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438 (nconc custom-face-attributes
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439 '((:family (editable-field :format "Family: %v")
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440 set-face-font-family)
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441 (:size (editable-field :format "Size: %v")
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442 set-face-font-size))))
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443
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444 (defun custom-face-attribites-set (face frame &rest atts)
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445 "For FACE on FRAME set the attributes [KEYWORD VALUE]....
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446 Each keyword should be listed in `custom-face-attributes'.
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447
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448 If FRAME is nil, set the default face."
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449 (while atts
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450 (let* ((name (nth 0 atts))
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451 (value (nth 1 atts))
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452 (fun (nth 2 (assq name custom-face-attributes))))
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453 (setq atts (cdr (cdr atts)))
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454 (condition-case nil
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455 (funcall fun face value)
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456 (error nil)))))
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457
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458 (defun custom-set-face-bold (face value &optional frame)
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459 "Set the bold property of FACE to VALUE."
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460 (if value
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461 (make-face-bold face frame)
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462 (make-face-unbold face frame)))
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463
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464 (defun custom-set-face-italic (face value &optional frame)
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465 "Set the italic property of FACE to VALUE."
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466 (if value
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467 (make-face-italic face frame)
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468 (make-face-unitalic face frame)))
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469
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470 ;;;###autoload
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471 (defun custom-initialize-faces (&optional frame)
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472 "Initialize all custom faces for FRAME.
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473 If FRAME is nil or omitted, initialize them for all frames."
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474 (mapatoms (lambda (symbol)
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475 (let ((spec (or (get symbol 'saved-face)
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476 (get symbol 'factory-face))))
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477 (when spec
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478 (custom-face-display-set symbol spec frame))))))
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479
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480 ;;; Initializing.
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481
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482 ;;;###autoload
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483 (defun custom-set-variables (&rest args)
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484 "Initialize variables according to user preferences.
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485
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486 The arguments should be a list where each entry has the form:
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487
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488 (SYMBOL VALUE [NOW])
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489
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490 The unevaluated VALUE is stored as the saved value for SYMBOL.
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491 If NOW is present and non-nil, VALUE is also evaluated and bound as
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492 the default value for the SYMBOL."
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493 (while args
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494 (let ((entry (car args)))
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495 (if (listp entry)
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496 (let ((symbol (nth 0 entry))
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497 (value (nth 1 entry))
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498 (now (nth 2 entry)))
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499 (put symbol 'saved-value (list value))
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500 (when now
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501 (put symbol 'force-value t)
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502 (set-default symbol (eval value)))
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503 (setq args (cdr args)))
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504 ;; Old format, a plist of SYMBOL VALUE pairs.
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505 (let ((symbol (nth 0 args))
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506 (value (nth 1 args)))
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507 (put symbol 'saved-value (list value)))
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508 (setq args (cdr (cdr args)))))))
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509
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510 ;;;###autoload
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511 (defun custom-set-faces (&rest args)
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512 "Initialize faces according to user preferences.
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513 The arguments should be a list where each entry has the form:
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514
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515 (FACE SPEC [NOW])
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516
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517 SPEC will be stored as the saved value for FACE. If NOW is present
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518 and non-nil, FACE will also be created according to SPEC.
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519
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520 See `defface' for the format of SPEC."
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521 (while args
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522 (let ((entry (car args)))
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523 (if (listp entry)
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524 (let ((face (nth 0 entry))
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525 (spec (nth 1 entry))
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526 (now (nth 2 entry)))
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527 (put face 'saved-face spec)
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528 (when now
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529 (put face 'force-face t)
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530 (custom-face-display-set face spec))
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531 (setq args (cdr args)))
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532 ;; Old format, a plist of FACE SPEC pairs.
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533 (let ((face (nth 0 args))
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534 (spec (nth 1 args)))
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535 (put face 'saved-face spec))
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|
536 (setq args (cdr (cdr args)))))))
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537
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538 ;;; Meta Customization
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539
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540 (defgroup emacs nil
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|
|
541 "Customization of the One True Editor."
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542 :link '(custom-manual "(emacs)Top"))
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543
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544 (defgroup customize '((widgets custom-group))
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545 "Customization of the Customization support."
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546 :link '(custom-manual "(custom)Top")
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547 :link '(url-link :tag "Development Page"
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|
548 "http://www.dina.kvl.dk/~abraham/custom/")
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549 :prefix "custom-"
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|
550 :group 'emacs)
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551
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|
|
552 (defcustom custom-define-hook nil
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|
553 "Hook called after defining each customize option."
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|
|
554 :group 'customize
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|
|
555 :type 'hook)
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556
|
|
|
557 ;;; Menu support
|
|
|
558
|
|
|
559 (defconst custom-help-menu '("Customize"
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|
|
560 ["Update menu..." custom-menu-update t]
|
|
|
561 ["Group..." customize t]
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|
562 ["Variable..." customize-variable t]
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|
563 ["Face..." customize-face t]
|
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|
564 ["Saved..." customize-customized t]
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|
565 ["Apropos..." customize-apropos t])
|
|
|
566 "Customize menu")
|
|
|
567
|
|
|
568 (defun custom-menu-reset ()
|
|
|
569 "Reset customize menu."
|
|
|
570 (remove-hook 'custom-define-hook 'custom-menu-reset)
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|
|
571 (cond ((fboundp 'add-submenu)
|
|
|
572 ;; XEmacs with menus.
|
|
|
573 (add-submenu '("Help") custom-help-menu))
|
|
|
574 ((string-match "XEmacs" emacs-version)
|
|
|
575 ;; XEmacs without menus.
|
|
|
576 )
|
|
|
577 (t
|
|
|
578 ;; Emacs.
|
|
|
579 (define-key global-map [menu-bar help-menu customize-menu]
|
|
|
580 (cons (car custom-help-menu)
|
|
|
581 (easy-menu-create-keymaps (car custom-help-menu)
|
|
|
582 (cdr custom-help-menu)))))))
|
|
|
583
|
|
|
584 ; (custom-menu-reset)
|
|
|
585
|
|
|
586 ;;; The End.
|
|
|
587
|
|
|
588 (provide 'custom)
|
|
|
589
|
|
|
590 ;; custom.el ends here
|
