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28
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1 ;;; wid-edit.el --- Functions for creating and using widgets.
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2 ;;
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3 ;; Copyright (C) 1996, 1997 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: extensions
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7 ;; Version: 1.50
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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 ;; See `widget.el'.
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13
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14 ;;; Code:
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15
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16 (require 'widget)
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17 (require 'cl)
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18 (autoload 'pp-to-string "pp")
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19 (autoload 'Info-goto-node "info")
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20
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21 (if (string-match "XEmacs" emacs-version)
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22 ;; XEmacs spell `intangible' as `atomic'.
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23 (defun widget-make-intangible (from to side)
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24 "Make text between FROM and TO atomic with regard to movement.
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25 Third argument should be `start-open' if it should be sticky to the rear,
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26 and `end-open' if it should sticky to the front."
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27 (require 'atomic-extents)
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28 (let ((ext (make-extent from to)))
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29 ;; XEmacs doesn't understant different kinds of read-only, so
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30 ;; we have to use extents instead.
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31 (put-text-property from to 'read-only nil)
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32 (set-extent-property ext 'read-only t)
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33 (set-extent-property ext 'start-open nil)
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34 (set-extent-property ext 'end-open nil)
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35 (set-extent-property ext side t)
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36 (set-extent-property ext 'atomic t)))
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37 (defun widget-make-intangible (from to size)
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38 "Make text between FROM and TO intangible."
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39 (put-text-property from to 'intangible 'front)))
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40
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41 ;; The following should go away when bundled with Emacs.
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42 (eval-and-compile
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43 (condition-case ()
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44 (require 'custom)
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45 (error nil))
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46
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47 (unless (and (featurep 'custom) (fboundp 'custom-declare-variable))
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48 ;; We have the old custom-library, hack around it!
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49 (defmacro defgroup (&rest args) nil)
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50 (defmacro defcustom (var value doc &rest args)
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51 `(defvar ,var ,value ,doc))
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52 (defmacro defface (&rest args) nil)
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53 (define-widget-keywords :prefix :tag :load :link :options :type :group)
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54 (when (fboundp 'copy-face)
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55 (copy-face 'default 'widget-documentation-face)
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56 (copy-face 'bold 'widget-button-face)
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57 (copy-face 'italic 'widget-field-face))))
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58
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59 ;;; Compatibility.
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60
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61 (unless (fboundp 'event-point)
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62 ;; XEmacs function missing in Emacs.
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63 (defun event-point (event)
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64 "Return the character position of the given mouse-motion, button-press,
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65 or button-release event. If the event did not occur over a window, or did
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66 not occur over text, then this returns nil. Otherwise, it returns an index
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67 into the buffer visible in the event's window."
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68 (posn-point (event-start event))))
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69
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70 (unless (fboundp 'error-message-string)
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71 ;; Emacs function missing in XEmacs.
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72 (defun error-message-string (obj)
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73 "Convert an error value to an error message."
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74 (let ((buf (get-buffer-create " *error-message*")))
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75 (erase-buffer buf)
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76 (display-error obj buf)
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77 (buffer-string buf))))
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78
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79 ;;; Customization.
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80
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81 (defgroup widgets nil
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82 "Customization support for the Widget Library."
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83 :link '(custom-manual "(widget)Top")
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84 :link '(url-link :tag "Development Page"
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85 "http://www.dina.kvl.dk/~abraham/custom/")
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86 :prefix "widget-"
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87 :group 'extensions
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88 :group 'faces
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89 :group 'hypermedia)
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90
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91 (defface widget-documentation-face '((((class color)
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92 (background dark))
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93 (:foreground "lime green"))
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94 (((class color)
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95 (background light))
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96 (:foreground "dark green"))
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97 (t nil))
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98 "Face used for documentation text."
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99 :group 'widgets)
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100
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101 (defface widget-button-face '((t (:bold t)))
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102 "Face used for widget buttons."
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103 :group 'widgets)
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104
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105 (defcustom widget-mouse-face 'highlight
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106 "Face used for widget buttons when the mouse is above them."
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107 :type 'face
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108 :group 'widgets)
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109
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110 (defface widget-field-face '((((class grayscale color)
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111 (background light))
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112 (:background "light gray"))
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113 (((class grayscale color)
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114 (background dark))
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115 (:background "dark gray"))
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116 (t
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117 (:italic t)))
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118 "Face used for editable fields."
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119 :group 'widgets)
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120
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121 (defcustom widget-menu-max-size 40
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122 "Largest number of items allowed in a popup-menu.
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123 Larger menus are read through the minibuffer."
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124 :group 'widgets
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125 :type 'integer)
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126
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127 ;;; Utility functions.
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128 ;;
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129 ;; These are not really widget specific.
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130
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131 (defsubst widget-plist-member (plist prop)
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132 ;; Return non-nil if PLIST has the property PROP.
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133 ;; PLIST is a property list, which is a list of the form
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134 ;; (PROP1 VALUE1 PROP2 VALUE2 ...). PROP is a symbol.
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135 ;; Unlike `plist-get', this allows you to distinguish between a missing
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136 ;; property and a property with the value nil.
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137 ;; The value is actually the tail of PLIST whose car is PROP.
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138 (while (and plist (not (eq (car plist) prop)))
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139 (setq plist (cdr (cdr plist))))
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140 plist)
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141
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142 (defun widget-princ-to-string (object)
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143 ;; Return string representation of OBJECT, any Lisp object.
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144 ;; No quoting characters are used; no delimiters are printed around
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145 ;; the contents of strings.
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146 (save-excursion
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147 (set-buffer (get-buffer-create " *widget-tmp*"))
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148 (erase-buffer)
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149 (let ((standard-output (current-buffer)))
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150 (princ object))
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151 (buffer-string)))
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152
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153 (defun widget-clear-undo ()
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154 "Clear all undo information."
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155 (buffer-disable-undo (current-buffer))
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156 (buffer-enable-undo))
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157
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158 (defun widget-choose (title items &optional event)
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159 "Choose an item from a list.
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160
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161 First argument TITLE is the name of the list.
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162 Second argument ITEMS is an alist (NAME . VALUE).
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163 Optional third argument EVENT is an input event.
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164
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165 The user is asked to choose between each NAME from the items alist,
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166 and the VALUE of the chosen element will be returned. If EVENT is a
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167 mouse event, and the number of elements in items is less than
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168 `widget-menu-max-size', a popup menu will be used, otherwise the
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169 minibuffer."
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170 (cond ((and (< (length items) widget-menu-max-size)
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171 event (fboundp 'x-popup-menu) window-system)
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172 ;; We are in Emacs-19, pressed by the mouse
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173 (x-popup-menu event
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174 (list title (cons "" items))))
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175 ((and (< (length items) widget-menu-max-size)
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176 event (fboundp 'popup-menu) window-system)
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177 ;; We are in XEmacs, pressed by the mouse
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178 (let ((val (get-popup-menu-response
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179 (cons title
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180 (mapcar
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181 (function
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182 (lambda (x)
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183 (vector (car x) (list (car x)) t)))
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184 items)))))
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185 (setq val (and val
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186 (listp (event-object val))
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187 (stringp (car-safe (event-object val)))
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188 (car (event-object val))))
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189 (cdr (assoc val items))))
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190 (t
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191 (cdr (assoc (completing-read (concat title ": ")
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192 items nil t)
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193 items)))))
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194
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195 (defun widget-get-sibling (widget)
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196 "Get the item WIDGET is assumed to toggle.
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197 This is only meaningful for radio buttons or checkboxes in a list."
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198 (let* ((parent (widget-get widget :parent))
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199 (children (widget-get parent :children))
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200 child)
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201 (catch 'child
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202 (while children
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203 (setq child (car children)
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204 children (cdr children))
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205 (when (eq (widget-get child :button) widget)
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206 (throw 'child child)))
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207 nil)))
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208
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209 ;;; Widget text specifications.
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210 ;;
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211 ;; These functions are for specifying text properties.
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212
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213 (defun widget-specify-none (from to)
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214 ;; Clear all text properties between FROM and TO.
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215 (set-text-properties from to nil))
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216
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217 (defun widget-specify-text (from to)
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218 ;; Default properties.
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219 (add-text-properties from to (list 'read-only t
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220 'front-sticky t
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221 'start-open t
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222 'end-open t
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223 'rear-nonsticky nil)))
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224
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225 (defun widget-specify-field (widget from to)
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226 ;; Specify editable button for WIDGET between FROM and TO.
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227 (widget-specify-field-update widget from to)
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228
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229 ;; Make it possible to edit the front end of the field.
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230 (add-text-properties (1- from) from (list 'rear-nonsticky t
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231 'end-open t
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232 'invisible t))
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233 (when (or (string-match "\\(.\\|\n\\)%v" (widget-get widget :format))
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234 (widget-get widget :hide-front-space))
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235 ;; WARNING: This is going to lose horrible if the character just
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236 ;; before the field can be modified (e.g. if it belongs to a
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237 ;; choice widget). We try to compensate by checking the format
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238 ;; string, and hope the user hasn't changed the :create method.
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239 (widget-make-intangible (- from 2) from 'end-open))
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240
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241 ;; Make it possible to edit back end of the field.
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242 (add-text-properties to (1+ to) (list 'front-sticky nil
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243 'read-only t
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244 'start-open t))
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245
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246 (cond ((widget-get widget :size)
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247 (put-text-property to (1+ to) 'invisible t)
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248 (when (or (string-match "%v\\(.\\|\n\\)" (widget-get widget :format))
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249 (widget-get widget :hide-rear-space))
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250 ;; WARNING: This is going to lose horrible if the character just
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251 ;; after the field can be modified (e.g. if it belongs to a
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252 ;; choice widget). We try to compensate by checking the format
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253 ;; string, and hope the user hasn't changed the :create method.
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254 (widget-make-intangible to (+ to 2) 'start-open)))
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255 ((string-match "XEmacs" emacs-version)
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256 ;; XEmacs does not allow you to insert before a read-only
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257 ;; character, even if it is start.open.
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258 ;; XEmacs does allow you to delete an read-only extent, so
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259 ;; making the terminating newline read only doesn't help.
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260 ;; I tried putting an invisible intangible read-only space
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261 ;; before the newline, which gave really weird effects.
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262 ;; So for now, we just have trust the user not to delete the
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263 ;; newline.
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264 (put-text-property to (1+ to) 'read-only nil))))
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265
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266 (defun widget-specify-field-update (widget from to)
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267 ;; Specify editable button for WIDGET between FROM and TO.
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268 (let ((map (widget-get widget :keymap))
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269 (secret (widget-get widget :secret))
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270 (secret-to to)
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271 (size (widget-get widget :size))
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272 (face (or (widget-get widget :value-face)
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273 'widget-field-face)))
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274
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275 (when secret
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276 (while (and size
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277 (not (zerop size))
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278 (> secret-to from)
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279 (eq (char-after (1- secret-to)) ?\ ))
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280 (setq secret-to (1- secret-to)))
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281
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282 (save-excursion
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283 (goto-char from)
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284 (while (< (point) secret-to)
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285 (let ((old (get-text-property (point) 'secret)))
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286 (when old
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287 (subst-char-in-region (point) (1+ (point)) secret old)))
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288 (forward-char))))
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289
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290 (set-text-properties from to (list 'field widget
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291 'read-only nil
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292 'keymap map
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293 'local-map map
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294 'face face))
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295
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296 (when secret
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297 (save-excursion
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298 (goto-char from)
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299 (while (< (point) secret-to)
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300 (let ((old (following-char)))
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301 (subst-char-in-region (point) (1+ (point)) old secret)
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302 (put-text-property (point) (1+ (point)) 'secret old))
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303 (forward-char))))
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304
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305 (unless (widget-get widget :size)
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306 (add-text-properties to (1+ to) (list 'field widget
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307 'face face)))
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308 (add-text-properties to (1+ to) (list 'local-map map
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309 'keymap map))))
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310
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311 (defun widget-specify-button (widget from to)
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312 ;; Specify button for WIDGET between FROM and TO.
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313 (let ((face (widget-apply widget :button-face-get)))
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314 (add-text-properties from to (list 'button widget
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315 'mouse-face widget-mouse-face
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316 'start-open t
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317 'end-open t
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318 'face face))))
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319
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320 (defun widget-specify-sample (widget from to)
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321 ;; Specify sample for WIDGET between FROM and TO.
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322 (let ((face (widget-apply widget :sample-face-get)))
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323 (when face
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324 (add-text-properties from to (list 'start-open t
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325 'end-open t
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326 'face face)))))
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327
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328 (defun widget-specify-doc (widget from to)
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329 ;; Specify documentation for WIDGET between FROM and TO.
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330 (add-text-properties from to (list 'widget-doc widget
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331 'face 'widget-documentation-face)))
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332
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333 (defmacro widget-specify-insert (&rest form)
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334 ;; Execute FORM without inheriting any text properties.
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335 `(save-restriction
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336 (let ((inhibit-read-only t)
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337 result
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338 after-change-functions)
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339 (insert "<>")
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340 (narrow-to-region (- (point) 2) (point))
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341 (widget-specify-none (point-min) (point-max))
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342 (goto-char (1+ (point-min)))
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343 (setq result (progn ,@form))
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344 (delete-region (point-min) (1+ (point-min)))
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345 (delete-region (1- (point-max)) (point-max))
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346 (goto-char (point-max))
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347 result)))
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348
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349 ;;; Widget Properties.
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350
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351 (defsubst widget-type (widget)
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352 "Return the type of WIDGET, a symbol."
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353 (car widget))
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354
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355 (defun widget-put (widget property value)
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356 "In WIDGET set PROPERTY to VALUE.
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357 The value can later be retrived with `widget-get'."
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358 (setcdr widget (plist-put (cdr widget) property value)))
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359
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360 (defun widget-get (widget property)
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361 "In WIDGET, get the value of PROPERTY.
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362 The value could either be specified when the widget was created, or
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363 later with `widget-put'."
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364 (let ((missing t)
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365 value tmp)
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366 (while missing
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367 (cond ((setq tmp (widget-plist-member (cdr widget) property))
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368 (setq value (car (cdr tmp))
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369 missing nil))
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370 ((setq tmp (car widget))
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371 (setq widget (get tmp 'widget-type)))
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372 (t
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373 (setq missing nil))))
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374 value))
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375
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376 (defun widget-member (widget property)
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377 "Non-nil iff there is a definition in WIDGET for PROPERTY."
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378 (cond ((widget-plist-member (cdr widget) property)
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379 t)
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380 ((car widget)
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381 (widget-member (get (car widget) 'widget-type) property))
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382 (t nil)))
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383
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384 (defun widget-apply (widget property &rest args)
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385 "Apply the value of WIDGET's PROPERTY to the widget itself.
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386 ARGS are passed as extra argments to the function."
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387 (apply (widget-get widget property) widget args))
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388
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389 (defun widget-value (widget)
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390 "Extract the current value of WIDGET."
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391 (widget-apply widget
|
|
|
392 :value-to-external (widget-apply widget :value-get)))
|
|
|
393
|
|
|
394 (defun widget-value-set (widget value)
|
|
|
395 "Set the current value of WIDGET to VALUE."
|
|
|
396 (widget-apply widget
|
|
|
397 :value-set (widget-apply widget
|
|
|
398 :value-to-internal value)))
|
|
|
399
|
|
|
400 (defun widget-match-inline (widget vals)
|
|
|
401 ;; In WIDGET, match the start of VALS.
|
|
|
402 (cond ((widget-get widget :inline)
|
|
|
403 (widget-apply widget :match-inline vals))
|
|
|
404 ((and vals
|
|
|
405 (widget-apply widget :match (car vals)))
|
|
|
406 (cons (list (car vals)) (cdr vals)))
|
|
|
407 (t nil)))
|
|
|
408
|
|
|
409 ;;; Glyphs.
|
|
|
410
|
|
|
411 (defcustom widget-glyph-directory (concat data-directory "custom/")
|
|
|
412 "Where widget glyphs are located.
|
|
|
413 If this variable is nil, widget will try to locate the directory
|
|
|
414 automatically. This does not work yet."
|
|
|
415 :group 'widgets
|
|
|
416 :type 'directory)
|
|
|
417
|
|
|
418 (defcustom widget-glyph-enable t
|
|
|
419 "If non nil, use glyphs in images when available."
|
|
|
420 :group 'widgets
|
|
|
421 :type 'boolean)
|
|
|
422
|
|
|
423 (defun widget-glyph-insert (widget tag image)
|
|
|
424 "In WIDGET, insert the text TAG or, if supported, IMAGE.
|
|
|
425 IMAGE should be a name sans extension of an xpm or xbm file located in
|
|
|
426 `widget-glyph-directory'"
|
|
|
427 (if (and (string-match "XEmacs" emacs-version)
|
|
|
428 widget-glyph-enable
|
|
|
429 (fboundp 'make-glyph)
|
|
|
430 image)
|
|
|
431 (let ((file (concat widget-glyph-directory
|
|
|
432 (if (string-match "/\\'" widget-glyph-directory)
|
|
|
433 ""
|
|
|
434 "/")
|
|
|
435 image
|
|
|
436 (if (featurep 'xpm) ".xpm" ".xbm"))))
|
|
|
437 (if (file-readable-p file)
|
|
|
438 (widget-glyph-insert-glyph widget tag (make-glyph file))
|
|
|
439 ;; File not readable, give up.
|
|
|
440 (insert tag)))
|
|
|
441 ;; We don't want or can't use glyphs.
|
|
|
442 (insert tag)))
|
|
|
443
|
|
|
444 (defun widget-glyph-insert-glyph (widget tag glyph)
|
|
|
445 "In WIDGET, with alternative text TAG, insert GLYPH."
|
|
|
446 (set-glyph-image glyph (cons 'tty tag))
|
|
|
447 (set-glyph-property glyph 'widget widget)
|
|
|
448 (insert "*")
|
|
|
449 (add-text-properties (1- (point)) (point)
|
|
|
450 (list 'invisible t
|
|
|
451 'end-glyph glyph)))
|
|
|
452
|
|
|
453 ;;; Creating Widgets.
|
|
|
454
|
|
|
455 ;;;###autoload
|
|
|
456 (defun widget-create (type &rest args)
|
|
|
457 "Create widget of TYPE.
|
|
|
458 The optional ARGS are additional keyword arguments."
|
|
|
459 (let ((widget (apply 'widget-convert type args)))
|
|
|
460 (widget-apply widget :create)
|
|
|
461 widget))
|
|
|
462
|
|
|
463 (defun widget-create-child-and-convert (parent type &rest args)
|
|
|
464 "As part of the widget PARENT, create a child widget TYPE.
|
|
|
465 The child is converted, using the keyword arguments ARGS."
|
|
|
466 (let ((widget (apply 'widget-convert type args)))
|
|
|
467 (widget-put widget :parent parent)
|
|
|
468 (unless (widget-get widget :indent)
|
|
|
469 (widget-put widget :indent (+ (or (widget-get parent :indent) 0)
|
|
|
470 (or (widget-get widget :extra-offset) 0)
|
|
|
471 (widget-get parent :offset))))
|
|
|
472 (widget-apply widget :create)
|
|
|
473 widget))
|
|
|
474
|
|
|
475 (defun widget-create-child (parent type)
|
|
|
476 "Create widget of TYPE."
|
|
|
477 (let ((widget (copy-list type)))
|
|
|
478 (widget-put widget :parent parent)
|
|
|
479 (unless (widget-get widget :indent)
|
|
|
480 (widget-put widget :indent (+ (or (widget-get parent :indent) 0)
|
|
|
481 (or (widget-get widget :extra-offset) 0)
|
|
|
482 (widget-get parent :offset))))
|
|
|
483 (widget-apply widget :create)
|
|
|
484 widget))
|
|
|
485
|
|
|
486 (defun widget-create-child-value (parent type value)
|
|
|
487 "Create widget of TYPE with value VALUE."
|
|
|
488 (let ((widget (copy-list type)))
|
|
|
489 (widget-put widget :value (widget-apply widget :value-to-internal value))
|
|
|
490 (widget-put widget :parent parent)
|
|
|
491 (unless (widget-get widget :indent)
|
|
|
492 (widget-put widget :indent (+ (or (widget-get parent :indent) 0)
|
|
|
493 (or (widget-get widget :extra-offset) 0)
|
|
|
494 (widget-get parent :offset))))
|
|
|
495 (widget-apply widget :create)
|
|
|
496 widget))
|
|
|
497
|
|
|
498 ;;;###autoload
|
|
|
499 (defun widget-delete (widget)
|
|
|
500 "Delete WIDGET."
|
|
|
501 (widget-apply widget :delete))
|
|
|
502
|
|
|
503 (defun widget-convert (type &rest args)
|
|
|
504 "Convert TYPE to a widget without inserting it in the buffer.
|
|
|
505 The optional ARGS are additional keyword arguments."
|
|
|
506 ;; Don't touch the type.
|
|
|
507 (let* ((widget (if (symbolp type)
|
|
|
508 (list type)
|
|
|
509 (copy-list type)))
|
|
|
510 (current widget)
|
|
|
511 (keys args))
|
|
|
512 ;; First set the :args keyword.
|
|
|
513 (while (cdr current) ;Look in the type.
|
|
|
514 (let ((next (car (cdr current))))
|
|
|
515 (if (and (symbolp next) (eq (aref (symbol-name next) 0) ?:))
|
|
|
516 (setq current (cdr (cdr current)))
|
|
|
517 (setcdr current (list :args (cdr current)))
|
|
|
518 (setq current nil))))
|
|
|
519 (while args ;Look in the args.
|
|
|
520 (let ((next (nth 0 args)))
|
|
|
521 (if (and (symbolp next) (eq (aref (symbol-name next) 0) ?:))
|
|
|
522 (setq args (nthcdr 2 args))
|
|
|
523 (widget-put widget :args args)
|
|
|
524 (setq args nil))))
|
|
|
525 ;; Then Convert the widget.
|
|
|
526 (setq type widget)
|
|
|
527 (while type
|
|
|
528 (let ((convert-widget (plist-get (cdr type) :convert-widget)))
|
|
|
529 (if convert-widget
|
|
|
530 (setq widget (funcall convert-widget widget))))
|
|
|
531 (setq type (get (car type) 'widget-type)))
|
|
|
532 ;; Finally set the keyword args.
|
|
|
533 (while keys
|
|
|
534 (let ((next (nth 0 keys)))
|
|
|
535 (if (and (symbolp next) (eq (aref (symbol-name next) 0) ?:))
|
|
|
536 (progn
|
|
|
537 (widget-put widget next (nth 1 keys))
|
|
|
538 (setq keys (nthcdr 2 keys)))
|
|
|
539 (setq keys nil))))
|
|
|
540 ;; Convert the :value to internal format.
|
|
|
541 (if (widget-member widget :value)
|
|
|
542 (let ((value (widget-get widget :value)))
|
|
|
543 (widget-put widget
|
|
|
544 :value (widget-apply widget :value-to-internal value))))
|
|
|
545 ;; Return the newly create widget.
|
|
|
546 widget))
|
|
|
547
|
|
|
548 (defun widget-insert (&rest args)
|
|
|
549 "Call `insert' with ARGS and make the text read only."
|
|
|
550 (let ((inhibit-read-only t)
|
|
|
551 after-change-functions
|
|
|
552 (from (point)))
|
|
|
553 (apply 'insert args)
|
|
|
554 (widget-specify-text from (point))))
|
|
|
555
|
|
|
556 ;;; Keymap and Comands.
|
|
|
557
|
|
|
558 (defvar widget-keymap nil
|
|
|
559 "Keymap containing useful binding for buffers containing widgets.
|
|
|
560 Recommended as a parent keymap for modes using widgets.")
|
|
|
561
|
|
|
562 (unless widget-keymap
|
|
|
563 (setq widget-keymap (make-sparse-keymap))
|
|
|
564 (define-key widget-keymap "\C-k" 'widget-kill-line)
|
|
|
565 (define-key widget-keymap "\t" 'widget-forward)
|
|
|
566 (define-key widget-keymap "\M-\t" 'widget-backward)
|
|
|
567 (define-key widget-keymap [(shift tab)] 'widget-backward)
|
|
|
568 (define-key widget-keymap [backtab] 'widget-backward)
|
|
|
569 (if (string-match "XEmacs" (emacs-version))
|
|
|
570 (progn
|
|
|
571 (define-key widget-keymap [button2] 'widget-button-click)
|
|
|
572 (define-key widget-keymap [button1] 'widget-button1-click))
|
|
|
573 (define-key widget-keymap [mouse-2] 'ignore)
|
|
|
574 (define-key widget-keymap [down-mouse-2] 'widget-button-click))
|
|
|
575 (define-key widget-keymap "\C-m" 'widget-button-press))
|
|
|
576
|
|
|
577 (defvar widget-global-map global-map
|
|
|
578 "Keymap used for events the widget does not handle themselves.")
|
|
|
579 (make-variable-buffer-local 'widget-global-map)
|
|
|
580
|
|
|
581 (defvar widget-field-keymap nil
|
|
|
582 "Keymap used inside an editable field.")
|
|
|
583
|
|
|
584 (unless widget-field-keymap
|
|
|
585 (setq widget-field-keymap (copy-keymap widget-keymap))
|
|
|
586 (unless (string-match "XEmacs" (emacs-version))
|
|
|
587 (define-key widget-field-keymap [menu-bar] 'nil))
|
|
|
588 (define-key widget-field-keymap "\C-m" 'widget-field-activate)
|
|
|
589 (define-key widget-field-keymap "\C-a" 'widget-beginning-of-line)
|
|
|
590 (define-key widget-field-keymap "\C-e" 'widget-end-of-line)
|
|
|
591 (set-keymap-parent widget-field-keymap global-map))
|
|
|
592
|
|
|
593 (defvar widget-text-keymap nil
|
|
|
594 "Keymap used inside a text field.")
|
|
|
595
|
|
|
596 (unless widget-text-keymap
|
|
|
597 (setq widget-text-keymap (copy-keymap widget-keymap))
|
|
|
598 (unless (string-match "XEmacs" (emacs-version))
|
|
|
599 (define-key widget-text-keymap [menu-bar] 'nil))
|
|
|
600 (define-key widget-text-keymap "\C-a" 'widget-beginning-of-line)
|
|
|
601 (define-key widget-text-keymap "\C-e" 'widget-end-of-line)
|
|
|
602 (set-keymap-parent widget-text-keymap global-map))
|
|
|
603
|
|
|
604 (defun widget-field-activate (pos &optional event)
|
|
|
605 "Activate the ediable field at point."
|
|
|
606 (interactive "@d")
|
|
|
607 (let ((field (get-text-property pos 'field)))
|
|
|
608 (if field
|
|
|
609 (widget-apply field :action event)
|
|
|
610 (call-interactively
|
|
|
611 (lookup-key widget-global-map (this-command-keys))))))
|
|
|
612
|
|
|
613 (defun widget-button-click (event)
|
|
|
614 "Activate button below mouse pointer."
|
|
|
615 (interactive "@e")
|
|
|
616 (cond ((and (fboundp 'event-glyph)
|
|
|
617 (event-glyph event))
|
|
|
618 (let ((widget (glyph-property (event-glyph event) 'widget)))
|
|
|
619 (if widget
|
|
|
620 (widget-apply widget :action event)
|
|
|
621 (message "You clicked on a glyph."))))
|
|
|
622 ((event-point event)
|
|
|
623 (let ((button (get-text-property (event-point event) 'button)))
|
|
|
624 (if button
|
|
|
625 (widget-apply button :action event)
|
|
|
626 (call-interactively
|
|
|
627 (or (lookup-key widget-global-map [ button2 ])
|
|
|
628 (lookup-key widget-global-map [ down-mouse-2 ])
|
|
|
629 (lookup-key widget-global-map [ mouse-2]))))))
|
|
|
630 (t
|
|
|
631 (message "You clicked somewhere weird."))))
|
|
|
632
|
|
|
633 (defun widget-button1-click (event)
|
|
|
634 "Activate glyph below mouse pointer."
|
|
|
635 (interactive "@e")
|
|
|
636 (if (and (fboundp 'event-glyph)
|
|
|
637 (event-glyph event))
|
|
|
638 (let ((widget (glyph-property (event-glyph event) 'widget)))
|
|
|
639 (if widget
|
|
|
640 (widget-apply widget :action event)
|
|
|
641 (message "You clicked on a glyph.")))
|
|
|
642 (call-interactively (lookup-key widget-global-map (this-command-keys)))))
|
|
|
643
|
|
|
644 (defun widget-button-press (pos &optional event)
|
|
|
645 "Activate button at POS."
|
|
|
646 (interactive "@d")
|
|
|
647 (let ((button (get-text-property pos 'button)))
|
|
|
648 (if button
|
|
|
649 (widget-apply button :action event)
|
|
|
650 (let ((command (lookup-key widget-global-map (this-command-keys))))
|
|
|
651 (when (commandp command)
|
|
|
652 (call-interactively command))))))
|
|
|
653
|
|
|
654 (defun widget-move (arg)
|
|
|
655 "Move point to the ARG next field or button.
|
|
|
656 ARG may be negative to move backward."
|
|
|
657 (while (> arg 0)
|
|
|
658 (setq arg (1- arg))
|
|
|
659 (let ((next (cond ((get-text-property (point) 'button)
|
|
|
660 (next-single-property-change (point) 'button))
|
|
|
661 ((get-text-property (point) 'field)
|
|
|
662 (next-single-property-change (point) 'field))
|
|
|
663 (t
|
|
|
664 (point)))))
|
|
|
665 (if (null next) ; Widget extends to end. of buffer
|
|
|
666 (setq next (point-min)))
|
|
|
667 (let ((button (next-single-property-change next 'button))
|
|
|
668 (field (next-single-property-change next 'field)))
|
|
|
669 (cond ((or (get-text-property next 'button)
|
|
|
670 (get-text-property next 'field))
|
|
|
671 (goto-char next))
|
|
|
672 ((and button field)
|
|
|
673 (goto-char (min button field)))
|
|
|
674 (button (goto-char button))
|
|
|
675 (field (goto-char field))
|
|
|
676 (t
|
|
|
677 (let ((button (next-single-property-change (point-min) 'button))
|
|
|
678 (field (next-single-property-change (point-min) 'field)))
|
|
|
679 (cond ((and button field) (goto-char (min button field)))
|
|
|
680 (button (goto-char button))
|
|
|
681 (field (goto-char field))
|
|
|
682 (t
|
|
|
683 (error "No buttons or fields found")))))))))
|
|
|
684 (while (< arg 0)
|
|
|
685 (if (= (point-min) (point))
|
|
|
686 (forward-char 1))
|
|
|
687 (setq arg (1+ arg))
|
|
|
688 (let ((previous (cond ((get-text-property (1- (point)) 'button)
|
|
|
689 (previous-single-property-change (point) 'button))
|
|
|
690 ((get-text-property (1- (point)) 'field)
|
|
|
691 (previous-single-property-change (point) 'field))
|
|
|
692 (t
|
|
|
693 (point)))))
|
|
|
694 (if (null previous) ; Widget extends to beg. of buffer
|
|
|
695 (setq previous (point-max)))
|
|
|
696 (let ((button (previous-single-property-change previous 'button))
|
|
|
697 (field (previous-single-property-change previous 'field)))
|
|
|
698 (cond ((and button field)
|
|
|
699 (goto-char (max button field)))
|
|
|
700 (button (goto-char button))
|
|
|
701 (field (goto-char field))
|
|
|
702 (t
|
|
|
703 (let ((button (previous-single-property-change
|
|
|
704 (point-max) 'button))
|
|
|
705 (field (previous-single-property-change
|
|
|
706 (point-max) 'field)))
|
|
|
707 (cond ((and button field) (goto-char (max button field)))
|
|
|
708 (button (goto-char button))
|
|
|
709 (field (goto-char field))
|
|
|
710 (t
|
|
|
711 (error "No buttons or fields found"))))))))
|
|
|
712 (let ((button (previous-single-property-change (point) 'button))
|
|
|
713 (field (previous-single-property-change (point) 'field)))
|
|
|
714 (cond ((and button field)
|
|
|
715 (goto-char (max button field)))
|
|
|
716 (button (goto-char button))
|
|
|
717 (field (goto-char field)))))
|
|
|
718 (widget-echo-help (point))
|
|
|
719 (run-hooks 'widget-move-hook))
|
|
|
720
|
|
|
721 (defun widget-forward (arg)
|
|
|
722 "Move point to the next field or button.
|
|
|
723 With optional ARG, move across that many fields."
|
|
|
724 (interactive "p")
|
|
|
725 (run-hooks 'widget-forward-hook)
|
|
|
726 (widget-move arg))
|
|
|
727
|
|
|
728 (defun widget-backward (arg)
|
|
|
729 "Move point to the previous field or button.
|
|
|
730 With optional ARG, move across that many fields."
|
|
|
731 (interactive "p")
|
|
|
732 (run-hooks 'widget-backward-hook)
|
|
|
733 (widget-move (- arg)))
|
|
|
734
|
|
|
735 (defun widget-beginning-of-line ()
|
|
|
736 "Go to beginning of field or beginning of line, whichever is first."
|
|
|
737 (interactive)
|
|
|
738 (let ((bol (save-excursion (beginning-of-line) (point)))
|
|
|
739 (prev (previous-single-property-change (point) 'field)))
|
|
|
740 (goto-char (max bol (or prev bol)))))
|
|
|
741
|
|
|
742 (defun widget-end-of-line ()
|
|
|
743 "Go to end of field or end of line, whichever is first."
|
|
|
744 (interactive)
|
|
|
745 (let ((bol (save-excursion (end-of-line) (point)))
|
|
|
746 (prev (next-single-property-change (point) 'field)))
|
|
|
747 (goto-char (min bol (or prev bol)))))
|
|
|
748
|
|
|
749 (defun widget-kill-line ()
|
|
|
750 "Kill to end of field or end of line, whichever is first."
|
|
|
751 (interactive)
|
|
|
752 (let ((field (get-text-property (point) 'field))
|
|
|
753 (newline (save-excursion (search-forward "\n")))
|
|
|
754 (next (next-single-property-change (point) 'field)))
|
|
|
755 (if (and field (> newline next))
|
|
|
756 (kill-region (point) next)
|
|
|
757 (call-interactively 'kill-line))))
|
|
|
758
|
|
|
759 ;;; Setting up the buffer.
|
|
|
760
|
|
|
761 (defvar widget-field-new nil)
|
|
|
762 ;; List of all newly created editable fields in the buffer.
|
|
|
763 (make-variable-buffer-local 'widget-field-new)
|
|
|
764
|
|
|
765 (defvar widget-field-list nil)
|
|
|
766 ;; List of all editable fields in the buffer.
|
|
|
767 (make-variable-buffer-local 'widget-field-list)
|
|
|
768
|
|
|
769 (defun widget-setup ()
|
|
|
770 "Setup current buffer so editing string widgets works."
|
|
|
771 (let ((inhibit-read-only t)
|
|
|
772 (after-change-functions nil)
|
|
|
773 field)
|
|
|
774 (while widget-field-new
|
|
|
775 (setq field (car widget-field-new)
|
|
|
776 widget-field-new (cdr widget-field-new)
|
|
|
777 widget-field-list (cons field widget-field-list))
|
|
|
778 (let ((from (widget-get field :value-from))
|
|
|
779 (to (widget-get field :value-to)))
|
|
|
780 (widget-specify-field field from to)
|
|
|
781 (move-marker from (1- from))
|
|
|
782 (move-marker to (1+ to)))))
|
|
|
783 (widget-clear-undo)
|
|
|
784 ;; We need to maintain text properties and size of the editing fields.
|
|
|
785 (make-local-variable 'after-change-functions)
|
|
|
786 (if widget-field-list
|
|
|
787 (setq after-change-functions '(widget-after-change))
|
|
|
788 (setq after-change-functions nil)))
|
|
|
789
|
|
|
790 (defvar widget-field-last nil)
|
|
|
791 ;; Last field containing point.
|
|
|
792 (make-variable-buffer-local 'widget-field-last)
|
|
|
793
|
|
|
794 (defvar widget-field-was nil)
|
|
|
795 ;; The widget data before the change.
|
|
|
796 (make-variable-buffer-local 'widget-field-was)
|
|
|
797
|
|
|
798 (defun widget-field-find (pos)
|
|
|
799 ;; Find widget whose editing field is located at POS.
|
|
|
800 ;; Return nil if POS is not inside and editing field.
|
|
|
801 ;;
|
|
|
802 ;; This is only used in `widget-field-modified', since ordinarily
|
|
|
803 ;; you would just test the field property.
|
|
|
804 (let ((fields widget-field-list)
|
|
|
805 field found)
|
|
|
806 (while fields
|
|
|
807 (setq field (car fields)
|
|
|
808 fields (cdr fields))
|
|
|
809 (let ((from (widget-get field :value-from))
|
|
|
810 (to (widget-get field :value-to)))
|
|
|
811 (if (and from to (< from pos) (> to pos))
|
|
|
812 (setq fields nil
|
|
|
813 found field))))
|
|
|
814 found))
|
|
|
815
|
|
|
816 (defun widget-after-change (from to old)
|
|
|
817 ;; Adjust field size and text properties.
|
|
|
818 (condition-case nil
|
|
|
819 (let ((field (widget-field-find from))
|
|
|
820 (inhibit-read-only t))
|
|
|
821 (cond ((null field))
|
|
|
822 ((not (eq field (widget-field-find to)))
|
|
|
823 (debug)
|
|
|
824 (message "Error: `widget-after-change' called on two fields"))
|
|
|
825 (t
|
|
|
826 (let ((size (widget-get field :size)))
|
|
|
827 (if size
|
|
|
828 (let ((begin (1+ (widget-get field :value-from)))
|
|
|
829 (end (1- (widget-get field :value-to))))
|
|
|
830 (widget-specify-field-update field begin end)
|
|
|
831 (cond ((< (- end begin) size)
|
|
|
832 ;; Field too small.
|
|
|
833 (save-excursion
|
|
|
834 (goto-char end)
|
|
|
835 (insert-char ?\ (- (+ begin size) end))
|
|
|
836 (widget-specify-field-update field
|
|
|
837 begin
|
|
|
838 (+ begin size))))
|
|
|
839 ((> (- end begin) size)
|
|
|
840 ;; Field too large and
|
|
|
841 (if (or (< (point) (+ begin size))
|
|
|
842 (> (point) end))
|
|
|
843 ;; Point is outside extra space.
|
|
|
844 (setq begin (+ begin size))
|
|
|
845 ;; Point is within the extra space.
|
|
|
846 (setq begin (point)))
|
|
|
847 (save-excursion
|
|
|
848 (goto-char end)
|
|
|
849 (while (and (eq (preceding-char) ?\ )
|
|
|
850 (> (point) begin))
|
|
|
851 (delete-backward-char 1))))))
|
|
|
852 (widget-specify-field-update field from to)))
|
|
|
853 (widget-apply field :notify field))))
|
|
|
854 (error (debug))))
|
|
|
855
|
|
|
856 ;;; Widget Functions
|
|
|
857 ;;
|
|
|
858 ;; These functions are used in the definition of multiple widgets.
|
|
|
859
|
|
|
860 (defun widget-children-value-delete (widget)
|
|
|
861 "Delete all :children and :buttons in WIDGET."
|
|
|
862 (mapcar 'widget-delete (widget-get widget :children))
|
|
|
863 (widget-put widget :children nil)
|
|
|
864 (mapcar 'widget-delete (widget-get widget :buttons))
|
|
|
865 (widget-put widget :buttons nil))
|
|
|
866
|
|
|
867 (defun widget-types-convert-widget (widget)
|
|
|
868 "Convert :args as widget types in WIDGET."
|
|
|
869 (widget-put widget :args (mapcar 'widget-convert (widget-get widget :args)))
|
|
|
870 widget)
|
|
|
871
|
|
|
872 ;;; The `default' Widget.
|
|
|
873
|
|
|
874 (define-widget 'default nil
|
|
|
875 "Basic widget other widgets are derived from."
|
|
|
876 :value-to-internal (lambda (widget value) value)
|
|
|
877 :value-to-external (lambda (widget value) value)
|
|
|
878 :create 'widget-default-create
|
|
|
879 :indent nil
|
|
|
880 :offset 0
|
|
|
881 :format-handler 'widget-default-format-handler
|
|
|
882 :button-face-get 'widget-default-button-face-get
|
|
|
883 :sample-face-get 'widget-default-sample-face-get
|
|
|
884 :delete 'widget-default-delete
|
|
|
885 :value-set 'widget-default-value-set
|
|
|
886 :value-inline 'widget-default-value-inline
|
|
|
887 :menu-tag-get 'widget-default-menu-tag-get
|
|
|
888 :validate (lambda (widget) nil)
|
|
|
889 :action 'widget-default-action
|
|
|
890 :notify 'widget-default-notify)
|
|
|
891
|
|
|
892 (defun widget-default-create (widget)
|
|
|
893 "Create WIDGET at point in the current buffer."
|
|
|
894 (widget-specify-insert
|
|
|
895 (let ((from (point))
|
|
|
896 (tag (widget-get widget :tag))
|
|
|
897 (glyph (widget-get widget :tag-glyph))
|
|
|
898 (doc (widget-get widget :doc))
|
|
|
899 button-begin button-end
|
|
|
900 sample-begin sample-end
|
|
|
901 doc-begin doc-end
|
|
|
902 value-pos)
|
|
|
903 (insert (widget-get widget :format))
|
|
|
904 (goto-char from)
|
|
|
905 ;; Parse escapes in format.
|
|
|
906 (while (re-search-forward "%\\(.\\)" nil t)
|
|
|
907 (let ((escape (aref (match-string 1) 0)))
|
|
|
908 (replace-match "" t t)
|
|
|
909 (cond ((eq escape ?%)
|
|
|
910 (insert "%"))
|
|
|
911 ((eq escape ?\[)
|
|
|
912 (setq button-begin (point)))
|
|
|
913 ((eq escape ?\])
|
|
|
914 (setq button-end (point)))
|
|
|
915 ((eq escape ?\{)
|
|
|
916 (setq sample-begin (point)))
|
|
|
917 ((eq escape ?\})
|
|
|
918 (setq sample-end (point)))
|
|
|
919 ((eq escape ?n)
|
|
|
920 (when (widget-get widget :indent)
|
|
|
921 (insert "\n")
|
|
|
922 (insert-char ? (widget-get widget :indent))))
|
|
|
923 ((eq escape ?t)
|
|
|
924 (cond (glyph
|
|
|
925 (widget-glyph-insert widget (or tag "image") glyph))
|
|
|
926 (tag
|
|
|
927 (insert tag))
|
|
|
928 (t
|
|
|
929 (let ((standard-output (current-buffer)))
|
|
|
930 (princ (widget-get widget :value))))))
|
|
|
931 ((eq escape ?d)
|
|
|
932 (when doc
|
|
|
933 (setq doc-begin (point))
|
|
|
934 (insert doc)
|
|
|
935 (while (eq (preceding-char) ?\n)
|
|
|
936 (delete-backward-char 1))
|
|
|
937 (insert "\n")
|
|
|
938 (setq doc-end (point))))
|
|
|
939 ((eq escape ?v)
|
|
|
940 (if (and button-begin (not button-end))
|
|
|
941 (widget-apply widget :value-create)
|
|
|
942 (setq value-pos (point))))
|
|
|
943 (t
|
|
|
944 (widget-apply widget :format-handler escape)))))
|
|
|
945 ;; Specify button, sample, and doc, and insert value.
|
|
|
946 (and button-begin button-end
|
|
|
947 (widget-specify-button widget button-begin button-end))
|
|
|
948 (and sample-begin sample-end
|
|
|
949 (widget-specify-sample widget sample-begin sample-end))
|
|
|
950 (and doc-begin doc-end
|
|
|
951 (widget-specify-doc widget doc-begin doc-end))
|
|
|
952 (when value-pos
|
|
|
953 (goto-char value-pos)
|
|
|
954 (widget-apply widget :value-create)))
|
|
|
955 (let ((from (copy-marker (point-min)))
|
|
|
956 (to (copy-marker (point-max))))
|
|
|
957 (widget-specify-text from to)
|
|
|
958 (set-marker-insertion-type from t)
|
|
|
959 (set-marker-insertion-type to nil)
|
|
|
960 (widget-put widget :from from)
|
|
|
961 (widget-put widget :to to))))
|
|
|
962
|
|
|
963 (defun widget-default-format-handler (widget escape)
|
|
|
964 ;; We recognize the %h escape by default.
|
|
|
965 (let* ((buttons (widget-get widget :buttons))
|
|
|
966 (doc-property (widget-get widget :documentation-property))
|
|
|
967 (doc-try (cond ((widget-get widget :doc))
|
|
|
968 ((symbolp doc-property)
|
|
|
969 (documentation-property (widget-get widget :value)
|
|
|
970 doc-property))
|
|
|
971 (t
|
|
|
972 (funcall doc-property (widget-get widget :value)))))
|
|
|
973 (doc-text (and (stringp doc-try)
|
|
|
974 (> (length doc-try) 1)
|
|
|
975 doc-try)))
|
|
|
976 (cond ((eq escape ?h)
|
|
|
977 (when doc-text
|
|
|
978 (and (eq (preceding-char) ?\n)
|
|
|
979 (widget-get widget :indent)
|
|
|
980 (insert-char ? (widget-get widget :indent)))
|
|
|
981 ;; The `*' in the beginning is redundant.
|
|
|
982 (when (eq (aref doc-text 0) ?*)
|
|
|
983 (setq doc-text (substring doc-text 1)))
|
|
|
984 ;; Get rid of trailing newlines.
|
|
|
985 (when (string-match "\n+\\'" doc-text)
|
|
|
986 (setq doc-text (substring doc-text 0 (match-beginning 0))))
|
|
|
987 (push (if (string-match "\n." doc-text)
|
|
|
988 ;; Allow multiline doc to be hiden.
|
|
|
989 (widget-create-child-and-convert
|
|
|
990 widget 'widget-help
|
|
|
991 :doc (progn
|
|
|
992 (string-match "\\`.*" doc-text)
|
|
|
993 (match-string 0 doc-text))
|
|
|
994 :widget-doc doc-text
|
|
|
995 "?")
|
|
|
996 ;; A single line is just inserted.
|
|
|
997 (widget-create-child-and-convert
|
|
|
998 widget 'item :format "%d" :doc doc-text nil))
|
|
|
999 buttons)))
|
|
|
1000 (t
|
|
|
1001 (error "Unknown escape `%c'" escape)))
|
|
|
1002 (widget-put widget :buttons buttons)))
|
|
|
1003
|
|
|
1004 (defun widget-default-button-face-get (widget)
|
|
|
1005 ;; Use :button-face or widget-button-face
|
|
|
1006 (or (widget-get widget :button-face) 'widget-button-face))
|
|
|
1007
|
|
|
1008 (defun widget-default-sample-face-get (widget)
|
|
|
1009 ;; Use :sample-face.
|
|
|
1010 (widget-get widget :sample-face))
|
|
|
1011
|
|
|
1012 (defun widget-default-delete (widget)
|
|
|
1013 ;; Remove widget from the buffer.
|
|
|
1014 (let ((from (widget-get widget :from))
|
|
|
1015 (to (widget-get widget :to))
|
|
|
1016 (inhibit-read-only t)
|
|
|
1017 after-change-functions)
|
|
|
1018 (widget-apply widget :value-delete)
|
|
|
1019 (delete-region from to)
|
|
|
1020 (set-marker from nil)
|
|
|
1021 (set-marker to nil)))
|
|
|
1022
|
|
|
1023 (defun widget-default-value-set (widget value)
|
|
|
1024 ;; Recreate widget with new value.
|
|
|
1025 (save-excursion
|
|
|
1026 (goto-char (widget-get widget :from))
|
|
|
1027 (widget-apply widget :delete)
|
|
|
1028 (widget-put widget :value value)
|
|
|
1029 (widget-apply widget :create)))
|
|
|
1030
|
|
|
1031 (defun widget-default-value-inline (widget)
|
|
|
1032 ;; Wrap value in a list unless it is inline.
|
|
|
1033 (if (widget-get widget :inline)
|
|
|
1034 (widget-value widget)
|
|
|
1035 (list (widget-value widget))))
|
|
|
1036
|
|
|
1037 (defun widget-default-menu-tag-get (widget)
|
|
|
1038 ;; Use tag or value for menus.
|
|
|
1039 (or (widget-get widget :menu-tag)
|
|
|
1040 (widget-get widget :tag)
|
|
|
1041 (widget-princ-to-string (widget-get widget :value))))
|
|
|
1042
|
|
|
1043 (defun widget-default-action (widget &optional event)
|
|
|
1044 ;; Notify the parent when a widget change
|
|
|
1045 (let ((parent (widget-get widget :parent)))
|
|
|
1046 (when parent
|
|
|
1047 (widget-apply parent :notify widget event))))
|
|
|
1048
|
|
|
1049 (defun widget-default-notify (widget child &optional event)
|
|
|
1050 ;; Pass notification to parent.
|
|
|
1051 (widget-default-action widget event))
|
|
|
1052
|
|
|
1053 ;;; The `item' Widget.
|
|
|
1054
|
|
|
1055 (define-widget 'item 'default
|
|
|
1056 "Constant items for inclusion in other widgets."
|
|
|
1057 :convert-widget 'widget-item-convert-widget
|
|
|
1058 :value-create 'widget-item-value-create
|
|
|
1059 :value-delete 'ignore
|
|
|
1060 :value-get 'widget-item-value-get
|
|
|
1061 :match 'widget-item-match
|
|
|
1062 :match-inline 'widget-item-match-inline
|
|
|
1063 :action 'widget-item-action
|
|
|
1064 :format "%t\n")
|
|
|
1065
|
|
|
1066 (defun widget-item-convert-widget (widget)
|
|
|
1067 ;; Initialize :value from :args in WIDGET.
|
|
|
1068 (let ((args (widget-get widget :args)))
|
|
|
1069 (when args
|
|
|
1070 (widget-put widget :value (widget-apply widget
|
|
|
1071 :value-to-internal (car args)))
|
|
|
1072 (widget-put widget :args nil)))
|
|
|
1073 widget)
|
|
|
1074
|
|
|
1075 (defun widget-item-value-create (widget)
|
|
|
1076 ;; Insert the printed representation of the value.
|
|
|
1077 (let ((standard-output (current-buffer)))
|
|
|
1078 (princ (widget-get widget :value))))
|
|
|
1079
|
|
|
1080 (defun widget-item-match (widget value)
|
|
|
1081 ;; Match if the value is the same.
|
|
|
1082 (equal (widget-get widget :value) value))
|
|
|
1083
|
|
|
1084 (defun widget-item-match-inline (widget values)
|
|
|
1085 ;; Match if the value is the same.
|
|
|
1086 (let ((value (widget-get widget :value)))
|
|
|
1087 (and (listp value)
|
|
|
1088 (<= (length value) (length values))
|
|
|
1089 (let ((head (subseq values 0 (length value))))
|
|
|
1090 (and (equal head value)
|
|
|
1091 (cons head (subseq values (length value))))))))
|
|
|
1092
|
|
|
1093 (defun widget-item-action (widget &optional event)
|
|
|
1094 ;; Just notify itself.
|
|
|
1095 (widget-apply widget :notify widget event))
|
|
|
1096
|
|
|
1097 (defun widget-item-value-get (widget)
|
|
|
1098 ;; Items are simple.
|
|
|
1099 (widget-get widget :value))
|
|
|
1100
|
|
|
1101 ;;; The `push-button' Widget.
|
|
|
1102
|
|
|
1103 (defcustom widget-push-button-gui t
|
|
|
1104 "If non nil, use GUI push buttons when available."
|
|
|
1105 :group 'widgets
|
|
|
1106 :type 'boolean)
|
|
|
1107
|
|
|
1108 ;; Cache already created GUI objects.
|
|
|
1109 (defvar widget-push-button-cache nil)
|
|
|
1110
|
|
|
1111 (define-widget 'push-button 'item
|
|
|
1112 "A pushable button."
|
|
|
1113 :value-create 'widget-push-button-value-create
|
|
|
1114 :format "%[%v%]")
|
|
|
1115
|
|
|
1116 (defun widget-push-button-value-create (widget)
|
|
|
1117 ;; Insert text representing the `on' and `off' states.
|
|
|
1118 (let* ((tag (or (widget-get widget :tag)
|
|
|
1119 (widget-get widget :value)))
|
|
|
1120 (text (concat "[" tag "]"))
|
|
|
1121 (gui (cdr (assoc tag widget-push-button-cache))))
|
|
|
1122 (if (and (fboundp 'make-gui-button)
|
|
|
1123 (fboundp 'make-glyph)
|
|
|
1124 widget-push-button-gui
|
|
|
1125 (fboundp 'device-on-window-system-p)
|
|
|
1126 (device-on-window-system-p)
|
|
|
1127 (string-match "XEmacs" emacs-version))
|
|
|
1128 (progn
|
|
|
1129 (unless gui
|
|
|
1130 (setq gui (make-gui-button tag 'widget-gui-action widget))
|
|
|
1131 (push (cons tag gui) widget-push-button-cache))
|
|
|
1132 (widget-glyph-insert-glyph widget text
|
|
|
1133 (make-glyph (car (aref gui 1)))))
|
|
|
1134 (insert text))))
|
|
|
1135
|
|
|
1136 (defun widget-gui-action (widget)
|
|
|
1137 "Apply :action for WIDGET."
|
|
|
1138 (widget-apply widget :action (this-command-keys)))
|
|
|
1139
|
|
|
1140 ;;; The `link' Widget.
|
|
|
1141
|
|
|
1142 (define-widget 'link 'item
|
|
|
1143 "An embedded link."
|
|
|
1144 :help-echo "Push me to follow the link."
|
|
|
1145 :format "%[_%t_%]")
|
|
|
1146
|
|
|
1147 ;;; The `info-link' Widget.
|
|
|
1148
|
|
|
1149 (define-widget 'info-link 'link
|
|
|
1150 "A link to an info file."
|
|
|
1151 :action 'widget-info-link-action)
|
|
|
1152
|
|
|
1153 (defun widget-info-link-action (widget &optional event)
|
|
|
1154 "Open the info node specified by WIDGET."
|
|
|
1155 (Info-goto-node (widget-value widget)))
|
|
|
1156
|
|
|
1157 ;;; The `url-link' Widget.
|
|
|
1158
|
|
|
1159 (define-widget 'url-link 'link
|
|
|
1160 "A link to an www page."
|
|
|
1161 :action 'widget-url-link-action)
|
|
|
1162
|
|
|
1163 (defun widget-url-link-action (widget &optional event)
|
|
|
1164 "Open the url specified by WIDGET."
|
|
|
1165 (require 'browse-url)
|
|
|
1166 (funcall browse-url-browser-function (widget-value widget)))
|
|
|
1167
|
|
|
1168 ;;; The `editable-field' Widget.
|
|
|
1169
|
|
|
1170 (define-widget 'editable-field 'default
|
|
|
1171 "An editable text field."
|
|
|
1172 :convert-widget 'widget-item-convert-widget
|
|
|
1173 :keymap widget-field-keymap
|
|
|
1174 :format "%v"
|
|
|
1175 :value ""
|
|
|
1176 :action 'widget-field-action
|
|
|
1177 :validate 'widget-field-validate
|
|
|
1178 :valid-regexp ""
|
|
|
1179 :error "No match"
|
|
|
1180 :value-create 'widget-field-value-create
|
|
|
1181 :value-delete 'widget-field-value-delete
|
|
|
1182 :value-get 'widget-field-value-get
|
|
|
1183 :match 'widget-field-match)
|
|
|
1184
|
|
|
1185 ;; History of field minibuffer edits.
|
|
|
1186 (defvar widget-field-history nil)
|
|
|
1187
|
|
|
1188 (defun widget-field-action (widget &optional event)
|
|
|
1189 ;; Edit the value in the minibuffer.
|
|
|
1190 (let ((tag (widget-apply widget :menu-tag-get))
|
|
|
1191 (invalid (widget-apply widget :validate)))
|
|
|
1192 (when invalid
|
|
|
1193 (error (widget-get invalid :error)))
|
|
|
1194 (widget-value-set widget
|
|
|
1195 (widget-apply widget
|
|
|
1196 :value-to-external
|
|
|
1197 (read-string (concat tag ": ")
|
|
|
1198 (widget-apply
|
|
|
1199 widget
|
|
|
1200 :value-to-internal
|
|
|
1201 (widget-value widget))
|
|
|
1202 'widget-field-history)))
|
|
|
1203 (widget-apply widget :notify widget event)
|
|
|
1204 (widget-setup)))
|
|
|
1205
|
|
|
1206 (defun widget-field-validate (widget)
|
|
|
1207 ;; Valid if the content matches `:valid-regexp'.
|
|
|
1208 (save-excursion
|
|
|
1209 (let ((value (widget-apply widget :value-get))
|
|
|
1210 (regexp (widget-get widget :valid-regexp)))
|
|
|
1211 (if (string-match regexp value)
|
|
|
1212 nil
|
|
|
1213 widget))))
|
|
|
1214
|
|
|
1215 (defun widget-field-value-create (widget)
|
|
|
1216 ;; Create an editable text field.
|
|
|
1217 (insert " ")
|
|
|
1218 (let ((size (widget-get widget :size))
|
|
|
1219 (value (widget-get widget :value))
|
|
|
1220 (from (point)))
|
|
|
1221 (insert value)
|
|
|
1222 (and size
|
|
|
1223 (< (length value) size)
|
|
|
1224 (insert-char ?\ (- size (length value))))
|
|
|
1225 (unless (memq widget widget-field-list)
|
|
|
1226 (setq widget-field-new (cons widget widget-field-new)))
|
|
|
1227 (widget-put widget :value-to (copy-marker (point)))
|
|
|
1228 (set-marker-insertion-type (widget-get widget :value-to) nil)
|
|
|
1229 (if (null size)
|
|
|
1230 (insert ?\n)
|
|
|
1231 (insert ?\ ))
|
|
|
1232 (widget-put widget :value-from (copy-marker from))
|
|
|
1233 (set-marker-insertion-type (widget-get widget :value-from) t)))
|
|
|
1234
|
|
|
1235 (defun widget-field-value-delete (widget)
|
|
|
1236 ;; Remove the widget from the list of active editing fields.
|
|
|
1237 (setq widget-field-list (delq widget widget-field-list))
|
|
|
1238 ;; These are nil if the :format string doesn't contain `%v'.
|
|
|
1239 (when (widget-get widget :value-from)
|
|
|
1240 (set-marker (widget-get widget :value-from) nil))
|
|
|
1241 (when (widget-get widget :value-from)
|
|
|
1242 (set-marker (widget-get widget :value-to) nil)))
|
|
|
1243
|
|
|
1244 (defun widget-field-value-get (widget)
|
|
|
1245 ;; Return current text in editing field.
|
|
|
1246 (let ((from (widget-get widget :value-from))
|
|
|
1247 (to (widget-get widget :value-to))
|
|
|
1248 (size (widget-get widget :size))
|
|
|
1249 (secret (widget-get widget :secret))
|
|
|
1250 (old (current-buffer)))
|
|
|
1251 (if (and from to)
|
|
|
1252 (progn
|
|
|
1253 (set-buffer (marker-buffer from))
|
|
|
1254 (setq from (1+ from)
|
|
|
1255 to (1- to))
|
|
|
1256 (while (and size
|
|
|
1257 (not (zerop size))
|
|
|
1258 (> to from)
|
|
|
1259 (eq (char-after (1- to)) ?\ ))
|
|
|
1260 (setq to (1- to)))
|
|
|
1261 (let ((result (buffer-substring-no-properties from to)))
|
|
|
1262 (when secret
|
|
|
1263 (let ((index 0))
|
|
|
1264 (while (< (+ from index) to)
|
|
|
1265 (aset result index
|
|
|
1266 (get-text-property (+ from index) 'secret))
|
|
|
1267 (setq index (1+ index)))))
|
|
|
1268 (set-buffer old)
|
|
|
1269 result))
|
|
|
1270 (widget-get widget :value))))
|
|
|
1271
|
|
|
1272 (defun widget-field-match (widget value)
|
|
|
1273 ;; Match any string.
|
|
|
1274 (stringp value))
|
|
|
1275
|
|
|
1276 ;;; The `text' Widget.
|
|
|
1277
|
|
|
1278 (define-widget 'text 'editable-field
|
|
|
1279 :keymap widget-text-keymap
|
|
|
1280 "A multiline text area.")
|
|
|
1281
|
|
|
1282 ;;; The `menu-choice' Widget.
|
|
|
1283
|
|
|
1284 (define-widget 'menu-choice 'default
|
|
|
1285 "A menu of options."
|
|
|
1286 :convert-widget 'widget-types-convert-widget
|
|
|
1287 :format "%[%t%]: %v"
|
|
|
1288 :case-fold t
|
|
|
1289 :tag "choice"
|
|
|
1290 :void '(item :format "invalid (%t)\n")
|
|
|
1291 :value-create 'widget-choice-value-create
|
|
|
1292 :value-delete 'widget-children-value-delete
|
|
|
1293 :value-get 'widget-choice-value-get
|
|
|
1294 :value-inline 'widget-choice-value-inline
|
|
|
1295 :action 'widget-choice-action
|
|
|
1296 :error "Make a choice"
|
|
|
1297 :validate 'widget-choice-validate
|
|
|
1298 :match 'widget-choice-match
|
|
|
1299 :match-inline 'widget-choice-match-inline)
|
|
|
1300
|
|
|
1301 (defun widget-choice-value-create (widget)
|
|
|
1302 ;; Insert the first choice that matches the value.
|
|
|
1303 (let ((value (widget-get widget :value))
|
|
|
1304 (args (widget-get widget :args))
|
|
|
1305 current)
|
|
|
1306 (while args
|
|
|
1307 (setq current (car args)
|
|
|
1308 args (cdr args))
|
|
|
1309 (when (widget-apply current :match value)
|
|
|
1310 (widget-put widget :children (list (widget-create-child-value
|
|
|
1311 widget current value)))
|
|
|
1312 (widget-put widget :choice current)
|
|
|
1313 (setq args nil
|
|
|
1314 current nil)))
|
|
|
1315 (when current
|
|
|
1316 (let ((void (widget-get widget :void)))
|
|
|
1317 (widget-put widget :children (list (widget-create-child-and-convert
|
|
|
1318 widget void :value value)))
|
|
|
1319 (widget-put widget :choice void)))))
|
|
|
1320
|
|
|
1321 (defun widget-choice-value-get (widget)
|
|
|
1322 ;; Get value of the child widget.
|
|
|
1323 (widget-value (car (widget-get widget :children))))
|
|
|
1324
|
|
|
1325 (defun widget-choice-value-inline (widget)
|
|
|
1326 ;; Get value of the child widget.
|
|
|
1327 (widget-apply (car (widget-get widget :children)) :value-inline))
|
|
|
1328
|
|
|
1329 (defun widget-choice-action (widget &optional event)
|
|
|
1330 ;; Make a choice.
|
|
|
1331 (let ((args (widget-get widget :args))
|
|
|
1332 (old (widget-get widget :choice))
|
|
|
1333 (tag (widget-apply widget :menu-tag-get))
|
|
|
1334 (completion-ignore-case (widget-get widget :case-fold))
|
|
|
1335 current choices)
|
|
|
1336 ;; Remember old value.
|
|
|
1337 (if (and old (not (widget-apply widget :validate)))
|
|
|
1338 (let* ((external (widget-value widget))
|
|
|
1339 (internal (widget-apply old :value-to-internal external)))
|
|
|
1340 (widget-put old :value internal)))
|
|
|
1341 ;; Find new choice.
|
|
|
1342 (setq current
|
|
|
1343 (cond ((= (length args) 0)
|
|
|
1344 nil)
|
|
|
1345 ((= (length args) 1)
|
|
|
1346 (nth 0 args))
|
|
|
1347 ((and (= (length args) 2)
|
|
|
1348 (memq old args))
|
|
|
1349 (if (eq old (nth 0 args))
|
|
|
1350 (nth 1 args)
|
|
|
1351 (nth 0 args)))
|
|
|
1352 (t
|
|
|
1353 (while args
|
|
|
1354 (setq current (car args)
|
|
|
1355 args (cdr args))
|
|
|
1356 (setq choices
|
|
|
1357 (cons (cons (widget-apply current :menu-tag-get)
|
|
|
1358 current)
|
|
|
1359 choices)))
|
|
|
1360 (widget-choose tag (reverse choices) event))))
|
|
|
1361 (when current
|
|
|
1362 (widget-value-set widget
|
|
|
1363 (widget-apply current :value-to-external
|
|
|
1364 (widget-get current :value)))
|
|
|
1365 (widget-apply widget :notify widget event)
|
|
|
1366 (widget-setup)))
|
|
|
1367 ;; Notify parent.
|
|
|
1368 (widget-apply widget :notify widget event)
|
|
|
1369 (widget-clear-undo))
|
|
|
1370
|
|
|
1371 (defun widget-choice-validate (widget)
|
|
|
1372 ;; Valid if we have made a valid choice.
|
|
|
1373 (let ((void (widget-get widget :void))
|
|
|
1374 (choice (widget-get widget :choice))
|
|
|
1375 (child (car (widget-get widget :children))))
|
|
|
1376 (if (eq void choice)
|
|
|
1377 widget
|
|
|
1378 (widget-apply child :validate))))
|
|
|
1379
|
|
|
1380 (defun widget-choice-match (widget value)
|
|
|
1381 ;; Matches if one of the choices matches.
|
|
|
1382 (let ((args (widget-get widget :args))
|
|
|
1383 current found)
|
|
|
1384 (while (and args (not found))
|
|
|
1385 (setq current (car args)
|
|
|
1386 args (cdr args)
|
|
|
1387 found (widget-apply current :match value)))
|
|
|
1388 found))
|
|
|
1389
|
|
|
1390 (defun widget-choice-match-inline (widget values)
|
|
|
1391 ;; Matches if one of the choices matches.
|
|
|
1392 (let ((args (widget-get widget :args))
|
|
|
1393 current found)
|
|
|
1394 (while (and args (null found))
|
|
|
1395 (setq current (car args)
|
|
|
1396 args (cdr args)
|
|
|
1397 found (widget-match-inline current values)))
|
|
|
1398 found))
|
|
|
1399
|
|
|
1400 ;;; The `toggle' Widget.
|
|
|
1401
|
|
|
1402 (define-widget 'toggle 'item
|
|
|
1403 "Toggle between two states."
|
|
|
1404 :format "%[%v%]\n"
|
|
|
1405 :value-create 'widget-toggle-value-create
|
|
|
1406 :action 'widget-toggle-action
|
|
|
1407 :match (lambda (widget value) t)
|
|
|
1408 :on "on"
|
|
|
1409 :off "off")
|
|
|
1410
|
|
|
1411 (defun widget-toggle-value-create (widget)
|
|
|
1412 ;; Insert text representing the `on' and `off' states.
|
|
|
1413 (if (widget-value widget)
|
|
|
1414 (widget-glyph-insert widget
|
|
|
1415 (widget-get widget :on)
|
|
|
1416 (widget-get widget :on-glyph))
|
|
|
1417 (widget-glyph-insert widget
|
|
|
1418 (widget-get widget :off)
|
|
|
1419 (widget-get widget :off-glyph))))
|
|
|
1420
|
|
|
1421 (defun widget-toggle-action (widget &optional event)
|
|
|
1422 ;; Toggle value.
|
|
|
1423 (widget-value-set widget (not (widget-value widget)))
|
|
|
1424 (widget-apply widget :notify widget event))
|
|
|
1425
|
|
|
1426 ;;; The `checkbox' Widget.
|
|
|
1427
|
|
|
1428 (define-widget 'checkbox 'toggle
|
|
|
1429 "A checkbox toggle."
|
|
|
1430 :format "%[%v%]"
|
|
|
1431 :on "[X]"
|
|
|
1432 :on-glyph "check1"
|
|
|
1433 :off "[ ]"
|
|
|
1434 :off-glyph "check0")
|
|
|
1435
|
|
|
1436 ;;; The `checklist' Widget.
|
|
|
1437
|
|
|
1438 (define-widget 'checklist 'default
|
|
|
1439 "A multiple choice widget."
|
|
|
1440 :convert-widget 'widget-types-convert-widget
|
|
|
1441 :format "%v"
|
|
|
1442 :offset 4
|
|
|
1443 :entry-format "%b %v"
|
|
|
1444 :menu-tag "checklist"
|
|
|
1445 :greedy nil
|
|
|
1446 :value-create 'widget-checklist-value-create
|
|
|
1447 :value-delete 'widget-children-value-delete
|
|
|
1448 :value-get 'widget-checklist-value-get
|
|
|
1449 :validate 'widget-checklist-validate
|
|
|
1450 :match 'widget-checklist-match
|
|
|
1451 :match-inline 'widget-checklist-match-inline)
|
|
|
1452
|
|
|
1453 (defun widget-checklist-value-create (widget)
|
|
|
1454 ;; Insert all values
|
|
|
1455 (let ((alist (widget-checklist-match-find widget (widget-get widget :value)))
|
|
|
1456 (args (widget-get widget :args)))
|
|
|
1457 (while args
|
|
|
1458 (widget-checklist-add-item widget (car args) (assq (car args) alist))
|
|
|
1459 (setq args (cdr args)))
|
|
|
1460 (widget-put widget :children (nreverse (widget-get widget :children)))))
|
|
|
1461
|
|
|
1462 (defun widget-checklist-add-item (widget type chosen)
|
|
|
1463 ;; Create checklist item in WIDGET of type TYPE.
|
|
|
1464 ;; If the item is checked, CHOSEN is a cons whose cdr is the value.
|
|
|
1465 (and (eq (preceding-char) ?\n)
|
|
|
1466 (widget-get widget :indent)
|
|
|
1467 (insert-char ? (widget-get widget :indent)))
|
|
|
1468 (widget-specify-insert
|
|
|
1469 (let* ((children (widget-get widget :children))
|
|
|
1470 (buttons (widget-get widget :buttons))
|
|
|
1471 (from (point))
|
|
|
1472 child button)
|
|
|
1473 (insert (widget-get widget :entry-format))
|
|
|
1474 (goto-char from)
|
|
|
1475 ;; Parse % escapes in format.
|
|
|
1476 (while (re-search-forward "%\\([bv%]\\)" nil t)
|
|
|
1477 (let ((escape (aref (match-string 1) 0)))
|
|
|
1478 (replace-match "" t t)
|
|
|
1479 (cond ((eq escape ?%)
|
|
|
1480 (insert "%"))
|
|
|
1481 ((eq escape ?b)
|
|
|
1482 (setq button (widget-create-child-and-convert
|
|
|
1483 widget 'checkbox :value (not (null chosen)))))
|
|
|
1484 ((eq escape ?v)
|
|
|
1485 (setq child
|
|
|
1486 (cond ((not chosen)
|
|
|
1487 (widget-create-child widget type))
|
|
|
1488 ((widget-get type :inline)
|
|
|
1489 (widget-create-child-value
|
|
|
1490 widget type (cdr chosen)))
|
|
|
1491 (t
|
|
|
1492 (widget-create-child-value
|
|
|
1493 widget type (car (cdr chosen)))))))
|
|
|
1494 (t
|
|
|
1495 (error "Unknown escape `%c'" escape)))))
|
|
|
1496 ;; Update properties.
|
|
|
1497 (and button child (widget-put child :button button))
|
|
|
1498 (and button (widget-put widget :buttons (cons button buttons)))
|
|
|
1499 (and child (widget-put widget :children (cons child children))))))
|
|
|
1500
|
|
|
1501 (defun widget-checklist-match (widget values)
|
|
|
1502 ;; All values must match a type in the checklist.
|
|
|
1503 (and (listp values)
|
|
|
1504 (null (cdr (widget-checklist-match-inline widget values)))))
|
|
|
1505
|
|
|
1506 (defun widget-checklist-match-inline (widget values)
|
|
|
1507 ;; Find the values which match a type in the checklist.
|
|
|
1508 (let ((greedy (widget-get widget :greedy))
|
|
|
1509 (args (copy-list (widget-get widget :args)))
|
|
|
1510 found rest)
|
|
|
1511 (while values
|
|
|
1512 (let ((answer (widget-checklist-match-up args values)))
|
|
|
1513 (cond (answer
|
|
|
1514 (let ((vals (widget-match-inline answer values)))
|
|
|
1515 (setq found (append found (car vals))
|
|
|
1516 values (cdr vals)
|
|
|
1517 args (delq answer args))))
|
|
|
1518 (greedy
|
|
|
1519 (setq rest (append rest (list (car values)))
|
|
|
1520 values (cdr values)))
|
|
|
1521 (t
|
|
|
1522 (setq rest (append rest values)
|
|
|
1523 values nil)))))
|
|
|
1524 (cons found rest)))
|
|
|
1525
|
|
|
1526 (defun widget-checklist-match-find (widget vals)
|
|
|
1527 ;; Find the vals which match a type in the checklist.
|
|
|
1528 ;; Return an alist of (TYPE MATCH).
|
|
|
1529 (let ((greedy (widget-get widget :greedy))
|
|
|
1530 (args (copy-list (widget-get widget :args)))
|
|
|
1531 found)
|
|
|
1532 (while vals
|
|
|
1533 (let ((answer (widget-checklist-match-up args vals)))
|
|
|
1534 (cond (answer
|
|
|
1535 (let ((match (widget-match-inline answer vals)))
|
|
|
1536 (setq found (cons (cons answer (car match)) found)
|
|
|
1537 vals (cdr match)
|
|
|
1538 args (delq answer args))))
|
|
|
1539 (greedy
|
|
|
1540 (setq vals (cdr vals)))
|
|
|
1541 (t
|
|
|
1542 (setq vals nil)))))
|
|
|
1543 found))
|
|
|
1544
|
|
|
1545 (defun widget-checklist-match-up (args vals)
|
|
|
1546 ;; Rerturn the first type from ARGS that matches VALS.
|
|
|
1547 (let (current found)
|
|
|
1548 (while (and args (null found))
|
|
|
1549 (setq current (car args)
|
|
|
1550 args (cdr args)
|
|
|
1551 found (widget-match-inline current vals)))
|
|
|
1552 (if found
|
|
|
1553 current
|
|
|
1554 nil)))
|
|
|
1555
|
|
|
1556 (defun widget-checklist-value-get (widget)
|
|
|
1557 ;; The values of all selected items.
|
|
|
1558 (let ((children (widget-get widget :children))
|
|
|
1559 child result)
|
|
|
1560 (while children
|
|
|
1561 (setq child (car children)
|
|
|
1562 children (cdr children))
|
|
|
1563 (if (widget-value (widget-get child :button))
|
|
|
1564 (setq result (append result (widget-apply child :value-inline)))))
|
|
|
1565 result))
|
|
|
1566
|
|
|
1567 (defun widget-checklist-validate (widget)
|
|
|
1568 ;; Ticked chilren must be valid.
|
|
|
1569 (let ((children (widget-get widget :children))
|
|
|
1570 child button found)
|
|
|
1571 (while (and children (not found))
|
|
|
1572 (setq child (car children)
|
|
|
1573 children (cdr children)
|
|
|
1574 button (widget-get child :button)
|
|
|
1575 found (and (widget-value button)
|
|
|
1576 (widget-apply child :validate))))
|
|
|
1577 found))
|
|
|
1578
|
|
|
1579 ;;; The `option' Widget
|
|
|
1580
|
|
|
1581 (define-widget 'option 'checklist
|
|
|
1582 "An widget with an optional item."
|
|
|
1583 :inline t)
|
|
|
1584
|
|
|
1585 ;;; The `choice-item' Widget.
|
|
|
1586
|
|
|
1587 (define-widget 'choice-item 'item
|
|
|
1588 "Button items that delegate action events to their parents."
|
|
|
1589 :action 'widget-choice-item-action
|
|
|
1590 :format "%[%t%] \n")
|
|
|
1591
|
|
|
1592 (defun widget-choice-item-action (widget &optional event)
|
|
|
1593 ;; Tell parent what happened.
|
|
|
1594 (widget-apply (widget-get widget :parent) :action event))
|
|
|
1595
|
|
|
1596 ;;; The `radio-button' Widget.
|
|
|
1597
|
|
|
1598 (define-widget 'radio-button 'toggle
|
|
|
1599 "A radio button for use in the `radio' widget."
|
|
|
1600 :notify 'widget-radio-button-notify
|
|
|
1601 :format "%[%v%]"
|
|
|
1602 :on "(*)"
|
|
|
1603 :on-glyph "radio1"
|
|
|
1604 :off "( )"
|
|
|
1605 :off-glyph "radio0")
|
|
|
1606
|
|
|
1607 (defun widget-radio-button-notify (widget child &optional event)
|
|
|
1608 ;; Tell daddy.
|
|
|
1609 (widget-apply (widget-get widget :parent) :action widget event))
|
|
|
1610
|
|
|
1611 ;;; The `radio-button-choice' Widget.
|
|
|
1612
|
|
|
1613 (define-widget 'radio-button-choice 'default
|
|
|
1614 "Select one of multiple options."
|
|
|
1615 :convert-widget 'widget-types-convert-widget
|
|
|
1616 :offset 4
|
|
|
1617 :format "%v"
|
|
|
1618 :entry-format "%b %v"
|
|
|
1619 :menu-tag "radio"
|
|
|
1620 :value-create 'widget-radio-value-create
|
|
|
1621 :value-delete 'widget-children-value-delete
|
|
|
1622 :value-get 'widget-radio-value-get
|
|
|
1623 :value-inline 'widget-radio-value-inline
|
|
|
1624 :value-set 'widget-radio-value-set
|
|
|
1625 :error "You must push one of the buttons"
|
|
|
1626 :validate 'widget-radio-validate
|
|
|
1627 :match 'widget-choice-match
|
|
|
1628 :match-inline 'widget-choice-match-inline
|
|
|
1629 :action 'widget-radio-action)
|
|
|
1630
|
|
|
1631 (defun widget-radio-value-create (widget)
|
|
|
1632 ;; Insert all values
|
|
|
1633 (let ((args (widget-get widget :args))
|
|
|
1634 arg)
|
|
|
1635 (while args
|
|
|
1636 (setq arg (car args)
|
|
|
1637 args (cdr args))
|
|
|
1638 (widget-radio-add-item widget arg))))
|
|
|
1639
|
|
|
1640 (defun widget-radio-add-item (widget type)
|
|
|
1641 "Add to radio widget WIDGET a new radio button item of type TYPE."
|
|
|
1642 ;; (setq type (widget-convert type))
|
|
|
1643 (and (eq (preceding-char) ?\n)
|
|
|
1644 (widget-get widget :indent)
|
|
|
1645 (insert-char ? (widget-get widget :indent)))
|
|
|
1646 (widget-specify-insert
|
|
|
1647 (let* ((value (widget-get widget :value))
|
|
|
1648 (children (widget-get widget :children))
|
|
|
1649 (buttons (widget-get widget :buttons))
|
|
|
1650 (from (point))
|
|
|
1651 (chosen (and (null (widget-get widget :choice))
|
|
|
1652 (widget-apply type :match value)))
|
|
|
1653 child button)
|
|
|
1654 (insert (widget-get widget :entry-format))
|
|
|
1655 (goto-char from)
|
|
|
1656 ;; Parse % escapes in format.
|
|
|
1657 (while (re-search-forward "%\\([bv%]\\)" nil t)
|
|
|
1658 (let ((escape (aref (match-string 1) 0)))
|
|
|
1659 (replace-match "" t t)
|
|
|
1660 (cond ((eq escape ?%)
|
|
|
1661 (insert "%"))
|
|
|
1662 ((eq escape ?b)
|
|
|
1663 (setq button (widget-create-child-and-convert
|
|
|
1664 widget 'radio-button
|
|
|
1665 :value (not (null chosen)))))
|
|
|
1666 ((eq escape ?v)
|
|
|
1667 (setq child (if chosen
|
|
|
1668 (widget-create-child-value
|
|
|
1669 widget type value)
|
|
|
1670 (widget-create-child widget type))))
|
|
|
1671 (t
|
|
|
1672 (error "Unknown escape `%c'" escape)))))
|
|
|
1673 ;; Update properties.
|
|
|
1674 (when chosen
|
|
|
1675 (widget-put widget :choice type))
|
|
|
1676 (when button
|
|
|
1677 (widget-put child :button button)
|
|
|
1678 (widget-put widget :buttons (nconc buttons (list button))))
|
|
|
1679 (when child
|
|
|
1680 (widget-put widget :children (nconc children (list child))))
|
|
|
1681 child)))
|
|
|
1682
|
|
|
1683 (defun widget-radio-value-get (widget)
|
|
|
1684 ;; Get value of the child widget.
|
|
|
1685 (let ((chosen (widget-radio-chosen widget)))
|
|
|
1686 (and chosen (widget-value chosen))))
|
|
|
1687
|
|
|
1688 (defun widget-radio-chosen (widget)
|
|
|
1689 "Return the widget representing the chosen radio button."
|
|
|
1690 (let ((children (widget-get widget :children))
|
|
|
1691 current found)
|
|
|
1692 (while children
|
|
|
1693 (setq current (car children)
|
|
|
1694 children (cdr children))
|
|
|
1695 (let* ((button (widget-get current :button))
|
|
|
1696 (value (widget-apply button :value-get)))
|
|
|
1697 (when value
|
|
|
1698 (setq found current
|
|
|
1699 children nil))))
|
|
|
1700 found))
|
|
|
1701
|
|
|
1702 (defun widget-radio-value-inline (widget)
|
|
|
1703 ;; Get value of the child widget.
|
|
|
1704 (let ((children (widget-get widget :children))
|
|
|
1705 current found)
|
|
|
1706 (while children
|
|
|
1707 (setq current (car children)
|
|
|
1708 children (cdr children))
|
|
|
1709 (let* ((button (widget-get current :button))
|
|
|
1710 (value (widget-apply button :value-get)))
|
|
|
1711 (when value
|
|
|
1712 (setq found (widget-apply current :value-inline)
|
|
|
1713 children nil))))
|
|
|
1714 found))
|
|
|
1715
|
|
|
1716 (defun widget-radio-value-set (widget value)
|
|
|
1717 ;; We can't just delete and recreate a radio widget, since children
|
|
|
1718 ;; can be added after the original creation and won't be recreated
|
|
|
1719 ;; by `:create'.
|
|
|
1720 (let ((children (widget-get widget :children))
|
|
|
1721 current found)
|
|
|
1722 (while children
|
|
|
1723 (setq current (car children)
|
|
|
1724 children (cdr children))
|
|
|
1725 (let* ((button (widget-get current :button))
|
|
|
1726 (match (and (not found)
|
|
|
1727 (widget-apply current :match value))))
|
|
|
1728 (widget-value-set button match)
|
|
|
1729 (if match
|
|
|
1730 (widget-value-set current value))
|
|
|
1731 (setq found (or found match))))))
|
|
|
1732
|
|
|
1733 (defun widget-radio-validate (widget)
|
|
|
1734 ;; Valid if we have made a valid choice.
|
|
|
1735 (let ((children (widget-get widget :children))
|
|
|
1736 current found button)
|
|
|
1737 (while (and children (not found))
|
|
|
1738 (setq current (car children)
|
|
|
1739 children (cdr children)
|
|
|
1740 button (widget-get current :button)
|
|
|
1741 found (widget-apply button :value-get)))
|
|
|
1742 (if found
|
|
|
1743 (widget-apply current :validate)
|
|
|
1744 widget)))
|
|
|
1745
|
|
|
1746 (defun widget-radio-action (widget child event)
|
|
|
1747 ;; Check if a radio button was pressed.
|
|
|
1748 (let ((children (widget-get widget :children))
|
|
|
1749 (buttons (widget-get widget :buttons))
|
|
|
1750 current)
|
|
|
1751 (when (memq child buttons)
|
|
|
1752 (while children
|
|
|
1753 (setq current (car children)
|
|
|
1754 children (cdr children))
|
|
|
1755 (let* ((button (widget-get current :button)))
|
|
|
1756 (cond ((eq child button)
|
|
|
1757 (widget-value-set button t))
|
|
|
1758 ((widget-value button)
|
|
|
1759 (widget-value-set button nil)))))))
|
|
|
1760 ;; Pass notification to parent.
|
|
|
1761 (widget-apply widget :notify child event))
|
|
|
1762
|
|
|
1763 ;;; The `insert-button' Widget.
|
|
|
1764
|
|
|
1765 (define-widget 'insert-button 'push-button
|
|
|
1766 "An insert button for the `editable-list' widget."
|
|
|
1767 :tag "INS"
|
|
|
1768 :action 'widget-insert-button-action)
|
|
|
1769
|
|
|
1770 (defun widget-insert-button-action (widget &optional event)
|
|
|
1771 ;; Ask the parent to insert a new item.
|
|
|
1772 (widget-apply (widget-get widget :parent)
|
|
|
1773 :insert-before (widget-get widget :widget)))
|
|
|
1774
|
|
|
1775 ;;; The `delete-button' Widget.
|
|
|
1776
|
|
|
1777 (define-widget 'delete-button 'push-button
|
|
|
1778 "A delete button for the `editable-list' widget."
|
|
|
1779 :tag "DEL"
|
|
|
1780 :action 'widget-delete-button-action)
|
|
|
1781
|
|
|
1782 (defun widget-delete-button-action (widget &optional event)
|
|
|
1783 ;; Ask the parent to insert a new item.
|
|
|
1784 (widget-apply (widget-get widget :parent)
|
|
|
1785 :delete-at (widget-get widget :widget)))
|
|
|
1786
|
|
|
1787 ;;; The `editable-list' Widget.
|
|
|
1788
|
|
|
1789 (defcustom widget-editable-list-gui nil
|
|
|
1790 "If non nil, use GUI push-buttons in editable list when available."
|
|
|
1791 :type 'boolean
|
|
|
1792 :group 'widgets)
|
|
|
1793
|
|
|
1794 (define-widget 'editable-list 'default
|
|
|
1795 "A variable list of widgets of the same type."
|
|
|
1796 :convert-widget 'widget-types-convert-widget
|
|
|
1797 :offset 12
|
|
|
1798 :format "%v%i\n"
|
|
|
1799 :format-handler 'widget-editable-list-format-handler
|
|
|
1800 :entry-format "%i %d %v"
|
|
|
1801 :menu-tag "editable-list"
|
|
|
1802 :value-create 'widget-editable-list-value-create
|
|
|
1803 :value-delete 'widget-children-value-delete
|
|
|
1804 :value-get 'widget-editable-list-value-get
|
|
|
1805 :validate 'widget-editable-list-validate
|
|
|
1806 :match 'widget-editable-list-match
|
|
|
1807 :match-inline 'widget-editable-list-match-inline
|
|
|
1808 :insert-before 'widget-editable-list-insert-before
|
|
|
1809 :delete-at 'widget-editable-list-delete-at)
|
|
|
1810
|
|
|
1811 (defun widget-editable-list-format-handler (widget escape)
|
|
|
1812 ;; We recognize the insert button.
|
|
|
1813 (let ((widget-push-button-gui widget-editable-list-gui))
|
|
|
1814 (cond ((eq escape ?i)
|
|
|
1815 (and (widget-get widget :indent)
|
|
|
1816 (insert-char ? (widget-get widget :indent)))
|
|
|
1817 (widget-create-child-and-convert widget 'insert-button))
|
|
|
1818 (t
|
|
|
1819 (widget-default-format-handler widget escape)))))
|
|
|
1820
|
|
|
1821 (defun widget-editable-list-value-create (widget)
|
|
|
1822 ;; Insert all values
|
|
|
1823 (let* ((value (widget-get widget :value))
|
|
|
1824 (type (nth 0 (widget-get widget :args)))
|
|
|
1825 (inlinep (widget-get type :inline))
|
|
|
1826 children)
|
|
|
1827 (widget-put widget :value-pos (copy-marker (point)))
|
|
|
1828 (set-marker-insertion-type (widget-get widget :value-pos) t)
|
|
|
1829 (while value
|
|
|
1830 (let ((answer (widget-match-inline type value)))
|
|
|
1831 (if answer
|
|
|
1832 (setq children (cons (widget-editable-list-entry-create
|
|
|
1833 widget
|
|
|
1834 (if inlinep
|
|
|
1835 (car answer)
|
|
|
1836 (car (car answer)))
|
|
|
1837 t)
|
|
|
1838 children)
|
|
|
1839 value (cdr answer))
|
|
|
1840 (setq value nil))))
|
|
|
1841 (widget-put widget :children (nreverse children))))
|
|
|
1842
|
|
|
1843 (defun widget-editable-list-value-get (widget)
|
|
|
1844 ;; Get value of the child widget.
|
|
|
1845 (apply 'append (mapcar (lambda (child) (widget-apply child :value-inline))
|
|
|
1846 (widget-get widget :children))))
|
|
|
1847
|
|
|
1848 (defun widget-editable-list-validate (widget)
|
|
|
1849 ;; All the chilren must be valid.
|
|
|
1850 (let ((children (widget-get widget :children))
|
|
|
1851 child found)
|
|
|
1852 (while (and children (not found))
|
|
|
1853 (setq child (car children)
|
|
|
1854 children (cdr children)
|
|
|
1855 found (widget-apply child :validate)))
|
|
|
1856 found))
|
|
|
1857
|
|
|
1858 (defun widget-editable-list-match (widget value)
|
|
|
1859 ;; Value must be a list and all the members must match the type.
|
|
|
1860 (and (listp value)
|
|
|
1861 (null (cdr (widget-editable-list-match-inline widget value)))))
|
|
|
1862
|
|
|
1863 (defun widget-editable-list-match-inline (widget value)
|
|
|
1864 (let ((type (nth 0 (widget-get widget :args)))
|
|
|
1865 (ok t)
|
|
|
1866 found)
|
|
|
1867 (while (and value ok)
|
|
|
1868 (let ((answer (widget-match-inline type value)))
|
|
|
1869 (if answer
|
|
|
1870 (setq found (append found (car answer))
|
|
|
1871 value (cdr answer))
|
|
|
1872 (setq ok nil))))
|
|
|
1873 (cons found value)))
|
|
|
1874
|
|
|
1875 (defun widget-editable-list-insert-before (widget before)
|
|
|
1876 ;; Insert a new child in the list of children.
|
|
|
1877 (save-excursion
|
|
|
1878 (let ((children (widget-get widget :children))
|
|
|
1879 (inhibit-read-only t)
|
|
|
1880 after-change-functions)
|
|
|
1881 (cond (before
|
|
|
1882 (goto-char (widget-get before :entry-from)))
|
|
|
1883 (t
|
|
|
1884 (goto-char (widget-get widget :value-pos))))
|
|
|
1885 (let ((child (widget-editable-list-entry-create
|
|
|
1886 widget nil nil)))
|
|
|
1887 (when (< (widget-get child :entry-from) (widget-get widget :from))
|
|
|
1888 (set-marker (widget-get widget :from)
|
|
|
1889 (widget-get child :entry-from)))
|
|
|
1890 (widget-specify-text (widget-get child :entry-from)
|
|
|
1891 (widget-get child :entry-to))
|
|
|
1892 (if (eq (car children) before)
|
|
|
1893 (widget-put widget :children (cons child children))
|
|
|
1894 (while (not (eq (car (cdr children)) before))
|
|
|
1895 (setq children (cdr children)))
|
|
|
1896 (setcdr children (cons child (cdr children)))))))
|
|
|
1897 (widget-setup)
|
|
|
1898 (widget-apply widget :notify widget))
|
|
|
1899
|
|
|
1900 (defun widget-editable-list-delete-at (widget child)
|
|
|
1901 ;; Delete child from list of children.
|
|
|
1902 (save-excursion
|
|
|
1903 (let ((buttons (copy-list (widget-get widget :buttons)))
|
|
|
1904 button
|
|
|
1905 (inhibit-read-only t)
|
|
|
1906 after-change-functions)
|
|
|
1907 (while buttons
|
|
|
1908 (setq button (car buttons)
|
|
|
1909 buttons (cdr buttons))
|
|
|
1910 (when (eq (widget-get button :widget) child)
|
|
|
1911 (widget-put widget
|
|
|
1912 :buttons (delq button (widget-get widget :buttons)))
|
|
|
1913 (widget-delete button))))
|
|
|
1914 (let ((entry-from (widget-get child :entry-from))
|
|
|
1915 (entry-to (widget-get child :entry-to))
|
|
|
1916 (inhibit-read-only t)
|
|
|
1917 after-change-functions)
|
|
|
1918 (widget-delete child)
|
|
|
1919 (delete-region entry-from entry-to)
|
|
|
1920 (set-marker entry-from nil)
|
|
|
1921 (set-marker entry-to nil))
|
|
|
1922 (widget-put widget :children (delq child (widget-get widget :children))))
|
|
|
1923 (widget-setup)
|
|
|
1924 (widget-apply widget :notify widget))
|
|
|
1925
|
|
|
1926 (defun widget-editable-list-entry-create (widget value conv)
|
|
|
1927 ;; Create a new entry to the list.
|
|
|
1928 (let ((type (nth 0 (widget-get widget :args)))
|
|
|
1929 (widget-push-button-gui widget-editable-list-gui)
|
|
|
1930 child delete insert)
|
|
|
1931 (widget-specify-insert
|
|
|
1932 (save-excursion
|
|
|
1933 (and (widget-get widget :indent)
|
|
|
1934 (insert-char ? (widget-get widget :indent)))
|
|
|
1935 (insert (widget-get widget :entry-format)))
|
|
|
1936 ;; Parse % escapes in format.
|
|
|
1937 (while (re-search-forward "%\\(.\\)" nil t)
|
|
|
1938 (let ((escape (aref (match-string 1) 0)))
|
|
|
1939 (replace-match "" t t)
|
|
|
1940 (cond ((eq escape ?%)
|
|
|
1941 (insert "%"))
|
|
|
1942 ((eq escape ?i)
|
|
|
1943 (setq insert (widget-create-child-and-convert
|
|
|
1944 widget 'insert-button)))
|
|
|
1945 ((eq escape ?d)
|
|
|
1946 (setq delete (widget-create-child-and-convert
|
|
|
1947 widget 'delete-button)))
|
|
|
1948 ((eq escape ?v)
|
|
|
1949 (if conv
|
|
|
1950 (setq child (widget-create-child-value
|
|
|
1951 widget type value))
|
|
|
1952 (setq child (widget-create-child widget type))))
|
|
|
1953 (t
|
|
|
1954 (error "Unknown escape `%c'" escape)))))
|
|
|
1955 (widget-put widget
|
|
|
1956 :buttons (cons delete
|
|
|
1957 (cons insert
|
|
|
1958 (widget-get widget :buttons))))
|
|
|
1959 (let ((entry-from (copy-marker (point-min)))
|
|
|
1960 (entry-to (copy-marker (point-max))))
|
|
|
1961 (widget-specify-text entry-from entry-to)
|
|
|
1962 (set-marker-insertion-type entry-from t)
|
|
|
1963 (set-marker-insertion-type entry-to nil)
|
|
|
1964 (widget-put child :entry-from entry-from)
|
|
|
1965 (widget-put child :entry-to entry-to)))
|
|
|
1966 (widget-put insert :widget child)
|
|
|
1967 (widget-put delete :widget child)
|
|
|
1968 child))
|
|
|
1969
|
|
|
1970 ;;; The `group' Widget.
|
|
|
1971
|
|
|
1972 (define-widget 'group 'default
|
|
|
1973 "A widget which group other widgets inside."
|
|
|
1974 :convert-widget 'widget-types-convert-widget
|
|
|
1975 :format "%v"
|
|
|
1976 :value-create 'widget-group-value-create
|
|
|
1977 :value-delete 'widget-children-value-delete
|
|
|
1978 :value-get 'widget-editable-list-value-get
|
|
|
1979 :validate 'widget-editable-list-validate
|
|
|
1980 :match 'widget-group-match
|
|
|
1981 :match-inline 'widget-group-match-inline)
|
|
|
1982
|
|
|
1983 (defun widget-group-value-create (widget)
|
|
|
1984 ;; Create each component.
|
|
|
1985 (let ((args (widget-get widget :args))
|
|
|
1986 (value (widget-get widget :value))
|
|
|
1987 arg answer children)
|
|
|
1988 (while args
|
|
|
1989 (setq arg (car args)
|
|
|
1990 args (cdr args)
|
|
|
1991 answer (widget-match-inline arg value)
|
|
|
1992 value (cdr answer))
|
|
|
1993 (and (eq (preceding-char) ?\n)
|
|
|
1994 (widget-get widget :indent)
|
|
|
1995 (insert-char ? (widget-get widget :indent)))
|
|
|
1996 (push (cond ((null answer)
|
|
|
1997 (widget-create-child widget arg))
|
|
|
1998 ((widget-get arg :inline)
|
|
|
1999 (widget-create-child-value widget arg (car answer)))
|
|
|
2000 (t
|
|
|
2001 (widget-create-child-value widget arg (car (car answer)))))
|
|
|
2002 children))
|
|
|
2003 (widget-put widget :children (nreverse children))))
|
|
|
2004
|
|
|
2005 (defun widget-group-match (widget values)
|
|
|
2006 ;; Match if the components match.
|
|
|
2007 (and (listp values)
|
|
|
2008 (let ((match (widget-group-match-inline widget values)))
|
|
|
2009 (and match (null (cdr match))))))
|
|
|
2010
|
|
|
2011 (defun widget-group-match-inline (widget vals)
|
|
|
2012 ;; Match if the components match.
|
|
|
2013 (let ((args (widget-get widget :args))
|
|
|
2014 argument answer found)
|
|
|
2015 (while args
|
|
|
2016 (setq argument (car args)
|
|
|
2017 args (cdr args)
|
|
|
2018 answer (widget-match-inline argument vals))
|
|
|
2019 (if answer
|
|
|
2020 (setq vals (cdr answer)
|
|
|
2021 found (append found (car answer)))
|
|
|
2022 (setq vals nil
|
|
|
2023 args nil)))
|
|
|
2024 (if answer
|
|
|
2025 (cons found vals)
|
|
|
2026 nil)))
|
|
|
2027
|
|
|
2028 ;;; The `widget-help' Widget.
|
|
|
2029
|
|
|
2030 (define-widget 'widget-help 'push-button
|
|
|
2031 "The widget documentation button."
|
|
|
2032 :format "%[[%t]%] %d"
|
|
|
2033 :help-echo "Push me to toggle the documentation."
|
|
|
2034 :action 'widget-help-action)
|
|
|
2035
|
|
|
2036 (defun widget-help-action (widget &optional event)
|
|
|
2037 "Toggle documentation for WIDGET."
|
|
|
2038 (let ((old (widget-get widget :doc))
|
|
|
2039 (new (widget-get widget :widget-doc)))
|
|
|
2040 (widget-put widget :doc new)
|
|
|
2041 (widget-put widget :widget-doc old))
|
|
|
2042 (widget-value-set widget (widget-value widget)))
|
|
|
2043
|
|
|
2044 ;;; The Sexp Widgets.
|
|
|
2045
|
|
|
2046 (define-widget 'const 'item
|
|
|
2047 "An immutable sexp."
|
|
|
2048 :format "%t\n%d")
|
|
|
2049
|
|
|
2050 (define-widget 'function-item 'item
|
|
|
2051 "An immutable function name."
|
|
|
2052 :format "%v\n%h"
|
|
|
2053 :documentation-property (lambda (symbol)
|
|
|
2054 (condition-case nil
|
|
|
2055 (documentation symbol t)
|
|
|
2056 (error nil))))
|
|
|
2057
|
|
|
2058 (define-widget 'variable-item 'item
|
|
|
2059 "An immutable variable name."
|
|
|
2060 :format "%v\n%h"
|
|
|
2061 :documentation-property 'variable-documentation)
|
|
|
2062
|
|
|
2063 (define-widget 'string 'editable-field
|
|
|
2064 "A string"
|
|
|
2065 :tag "String"
|
|
|
2066 :format "%[%t%]: %v")
|
|
|
2067
|
|
|
2068 (define-widget 'regexp 'string
|
|
|
2069 "A regular expression."
|
|
|
2070 ;; Should do validation.
|
|
|
2071 :tag "Regexp")
|
|
|
2072
|
|
|
2073 (define-widget 'file 'string
|
|
|
2074 "A file widget.
|
|
|
2075 It will read a file name from the minibuffer when activated."
|
|
|
2076 :format "%[%t%]: %v"
|
|
|
2077 :tag "File"
|
|
|
2078 :action 'widget-file-action)
|
|
|
2079
|
|
|
2080 (defun widget-file-action (widget &optional event)
|
|
|
2081 ;; Read a file name from the minibuffer.
|
|
|
2082 (let* ((value (widget-value widget))
|
|
|
2083 (dir (file-name-directory value))
|
|
|
2084 (file (file-name-nondirectory value))
|
|
|
2085 (menu-tag (widget-apply widget :menu-tag-get))
|
|
|
2086 (must-match (widget-get widget :must-match))
|
|
|
2087 (answer (read-file-name (concat menu-tag ": (defalt `" value "') ")
|
|
|
2088 dir nil must-match file)))
|
|
|
2089 (widget-value-set widget (abbreviate-file-name answer))
|
|
|
2090 (widget-apply widget :notify widget event)
|
|
|
2091 (widget-setup)))
|
|
|
2092
|
|
|
2093 (define-widget 'directory 'file
|
|
|
2094 "A directory widget.
|
|
|
2095 It will read a directory name from the minibuffer when activated."
|
|
|
2096 :tag "Directory")
|
|
|
2097
|
|
|
2098 (define-widget 'symbol 'string
|
|
|
2099 "A lisp symbol."
|
|
|
2100 :value nil
|
|
|
2101 :tag "Symbol"
|
|
|
2102 :match (lambda (widget value) (symbolp value))
|
|
|
2103 :value-to-internal (lambda (widget value)
|
|
|
2104 (if (symbolp value)
|
|
|
2105 (symbol-name value)
|
|
|
2106 value))
|
|
|
2107 :value-to-external (lambda (widget value)
|
|
|
2108 (if (stringp value)
|
|
|
2109 (intern value)
|
|
|
2110 value)))
|
|
|
2111
|
|
|
2112 (define-widget 'function 'sexp
|
|
|
2113 ;; Should complete on functions.
|
|
|
2114 "A lisp function."
|
|
|
2115 :tag "Function")
|
|
|
2116
|
|
|
2117 (define-widget 'variable 'symbol
|
|
|
2118 ;; Should complete on variables.
|
|
|
2119 "A lisp variable."
|
|
|
2120 :tag "Variable")
|
|
|
2121
|
|
|
2122 (define-widget 'sexp 'string
|
|
|
2123 "An arbitrary lisp expression."
|
|
|
2124 :tag "Lisp expression"
|
|
|
2125 :value nil
|
|
|
2126 :validate 'widget-sexp-validate
|
|
|
2127 :match (lambda (widget value) t)
|
|
|
2128 :value-to-internal 'widget-sexp-value-to-internal
|
|
|
2129 :value-to-external (lambda (widget value) (read value)))
|
|
|
2130
|
|
|
2131 (defun widget-sexp-value-to-internal (widget value)
|
|
|
2132 ;; Use pp for printer representation.
|
|
|
2133 (let ((pp (pp-to-string value)))
|
|
|
2134 (while (string-match "\n\\'" pp)
|
|
|
2135 (setq pp (substring pp 0 -1)))
|
|
|
2136 (if (or (string-match "\n\\'" pp)
|
|
|
2137 (> (length pp) 40))
|
|
|
2138 (concat "\n" pp)
|
|
|
2139 pp)))
|
|
|
2140
|
|
|
2141 (defun widget-sexp-validate (widget)
|
|
|
2142 ;; Valid if we can read the string and there is no junk left after it.
|
|
|
2143 (save-excursion
|
|
|
2144 (let ((buffer (set-buffer (get-buffer-create " *Widget Scratch*"))))
|
|
|
2145 (erase-buffer)
|
|
|
2146 (insert (widget-apply widget :value-get))
|
|
|
2147 (goto-char (point-min))
|
|
|
2148 (condition-case data
|
|
|
2149 (let ((value (read buffer)))
|
|
|
2150 (if (eobp)
|
|
|
2151 (if (widget-apply widget :match value)
|
|
|
2152 nil
|
|
|
2153 (widget-put widget :error (widget-get widget :type-error))
|
|
|
2154 widget)
|
|
|
2155 (widget-put widget
|
|
|
2156 :error (format "Junk at end of expression: %s"
|
|
|
2157 (buffer-substring (point)
|
|
|
2158 (point-max))))
|
|
|
2159 widget))
|
|
|
2160 (error (widget-put widget :error (error-message-string data))
|
|
|
2161 widget)))))
|
|
|
2162
|
|
|
2163 (define-widget 'integer 'sexp
|
|
|
2164 "An integer."
|
|
|
2165 :tag "Integer"
|
|
|
2166 :value 0
|
|
|
2167 :type-error "This field should contain an integer"
|
|
|
2168 :value-to-internal (lambda (widget value)
|
|
|
2169 (if (integerp value)
|
|
|
2170 (prin1-to-string value)
|
|
|
2171 value))
|
|
|
2172 :match (lambda (widget value) (integerp value)))
|
|
|
2173
|
|
|
2174 (define-widget 'character 'string
|
|
|
2175 "An character."
|
|
|
2176 :tag "Character"
|
|
|
2177 :value 0
|
|
|
2178 :size 1
|
|
|
2179 :format "%{%t%}: %v\n"
|
|
|
2180 :type-error "This field should contain a character"
|
|
|
2181 :value-to-internal (lambda (widget value)
|
|
|
2182 (if (integerp value)
|
|
|
2183 (char-to-string value)
|
|
|
2184 value))
|
|
|
2185 :value-to-external (lambda (widget value)
|
|
|
2186 (if (stringp value)
|
|
|
2187 (aref value 0)
|
|
|
2188 value))
|
|
|
2189 :match (lambda (widget value) (integerp value)))
|
|
|
2190
|
|
|
2191 (define-widget 'number 'sexp
|
|
|
2192 "A floating point number."
|
|
|
2193 :tag "Number"
|
|
|
2194 :value 0.0
|
|
|
2195 :type-error "This field should contain a number"
|
|
|
2196 :value-to-internal (lambda (widget value)
|
|
|
2197 (if (numberp value)
|
|
|
2198 (prin1-to-string value)
|
|
|
2199 value))
|
|
|
2200 :match (lambda (widget value) (numberp value)))
|
|
|
2201
|
|
|
2202 (define-widget 'list 'group
|
|
|
2203 "A lisp list."
|
|
|
2204 :tag "List"
|
|
|
2205 :format "%{%t%}:\n%v")
|
|
|
2206
|
|
|
2207 (define-widget 'vector 'group
|
|
|
2208 "A lisp vector."
|
|
|
2209 :tag "Vector"
|
|
|
2210 :format "%{%t%}:\n%v"
|
|
|
2211 :match 'widget-vector-match
|
|
|
2212 :value-to-internal (lambda (widget value) (append value nil))
|
|
|
2213 :value-to-external (lambda (widget value) (apply 'vector value)))
|
|
|
2214
|
|
|
2215 (defun widget-vector-match (widget value)
|
|
|
2216 (and (vectorp value)
|
|
|
2217 (widget-group-match widget
|
|
|
2218 (widget-apply :value-to-internal widget value))))
|
|
|
2219
|
|
|
2220 (define-widget 'cons 'group
|
|
|
2221 "A cons-cell."
|
|
|
2222 :tag "Cons-cell"
|
|
|
2223 :format "%{%t%}:\n%v"
|
|
|
2224 :match 'widget-cons-match
|
|
|
2225 :value-to-internal (lambda (widget value)
|
|
|
2226 (list (car value) (cdr value)))
|
|
|
2227 :value-to-external (lambda (widget value)
|
|
|
2228 (cons (nth 0 value) (nth 1 value))))
|
|
|
2229
|
|
|
2230 (defun widget-cons-match (widget value)
|
|
|
2231 (and (consp value)
|
|
|
2232 (widget-group-match widget
|
|
|
2233 (widget-apply widget :value-to-internal value))))
|
|
|
2234
|
|
|
2235 (define-widget 'choice 'menu-choice
|
|
|
2236 "A union of several sexp types."
|
|
|
2237 :tag "Choice"
|
|
|
2238 :format "%[%t%]: %v")
|
|
|
2239
|
|
|
2240 (define-widget 'radio 'radio-button-choice
|
|
|
2241 "A union of several sexp types."
|
|
|
2242 :tag "Choice"
|
|
|
2243 :format "%{%t%}:\n%v")
|
|
|
2244
|
|
|
2245 (define-widget 'repeat 'editable-list
|
|
|
2246 "A variable length homogeneous list."
|
|
|
2247 :tag "Repeat"
|
|
|
2248 :format "%{%t%}:\n%v%i\n")
|
|
|
2249
|
|
|
2250 (define-widget 'set 'checklist
|
|
|
2251 "A list of members from a fixed set."
|
|
|
2252 :tag "Set"
|
|
|
2253 :format "%{%t%}:\n%v")
|
|
|
2254
|
|
|
2255 (define-widget 'boolean 'toggle
|
|
|
2256 "To be nil or non-nil, that is the question."
|
|
|
2257 :tag "Boolean"
|
|
|
2258 :format "%{%t%}: %[%v%]\n")
|
|
|
2259
|
|
|
2260 ;;; The `color' Widget.
|
|
|
2261
|
|
|
2262 (define-widget 'color-item 'choice-item
|
|
|
2263 "A color name (with sample)."
|
|
|
2264 :format "%v (%[sample%])\n"
|
|
|
2265 :button-face-get 'widget-color-item-button-face-get)
|
|
|
2266
|
|
|
2267 (defun widget-color-item-button-face-get (widget)
|
|
|
2268 ;; We create a face from the value.
|
|
|
2269 (require 'facemenu)
|
|
|
2270 (condition-case nil
|
|
|
2271 (facemenu-get-face (intern (concat "fg:" (widget-value widget))))
|
|
|
2272 (error 'default)))
|
|
|
2273
|
|
|
2274 (define-widget 'color 'push-button
|
|
|
2275 "Choose a color name (with sample)."
|
|
|
2276 :format "%[%t%]: %v"
|
|
|
2277 :tag "Color"
|
|
|
2278 :value "default"
|
|
|
2279 :value-create 'widget-color-value-create
|
|
|
2280 :value-delete 'widget-children-value-delete
|
|
|
2281 :value-get 'widget-color-value-get
|
|
|
2282 :value-set 'widget-color-value-set
|
|
|
2283 :action 'widget-color-action
|
|
|
2284 :match 'widget-field-match
|
|
|
2285 :tag "Color")
|
|
|
2286
|
|
|
2287 (defvar widget-color-choice-list nil)
|
|
|
2288 ;; Variable holding the possible colors.
|
|
|
2289
|
|
|
2290 (defun widget-color-choice-list ()
|
|
|
2291 (unless widget-color-choice-list
|
|
|
2292 (setq widget-color-choice-list
|
|
|
2293 (mapcar '(lambda (color) (list color))
|
|
|
2294 (x-defined-colors))))
|
|
|
2295 widget-color-choice-list)
|
|
|
2296
|
|
|
2297 (defun widget-color-value-create (widget)
|
|
|
2298 (let ((child (widget-create-child-and-convert
|
|
|
2299 widget 'color-item (widget-get widget :value))))
|
|
|
2300 (widget-put widget :children (list child))))
|
|
|
2301
|
|
|
2302 (defun widget-color-value-get (widget)
|
|
|
2303 ;; Pass command to first child.
|
|
|
2304 (widget-apply (car (widget-get widget :children)) :value-get))
|
|
|
2305
|
|
|
2306 (defun widget-color-value-set (widget value)
|
|
|
2307 ;; Pass command to first child.
|
|
|
2308 (widget-apply (car (widget-get widget :children)) :value-set value))
|
|
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2309
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|
2310 (defvar widget-color-history nil
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|
|
2311 "History of entered colors")
|
|
|
2312
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|
2313 (defun widget-color-action (widget &optional event)
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|
|
2314 ;; Prompt for a color.
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|
|
2315 (let* ((tag (widget-apply widget :menu-tag-get))
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|
|
2316 (prompt (concat tag ": "))
|
|
|
2317 (answer (cond ((string-match "XEmacs" emacs-version)
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|
|
2318 (read-color prompt))
|
|
|
2319 ((fboundp 'x-defined-colors)
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|
|
2320 (completing-read (concat tag ": ")
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|
|
2321 (widget-color-choice-list)
|
|
|
2322 nil nil nil 'widget-color-history))
|
|
|
2323 (t
|
|
|
2324 (read-string prompt (widget-value widget))))))
|
|
|
2325 (unless (zerop (length answer))
|
|
|
2326 (widget-value-set widget answer)
|
|
|
2327 (widget-apply widget :notify widget event)
|
|
|
2328 (widget-setup))))
|
|
|
2329
|
|
|
2330 ;;; The Help Echo
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|
2331
|
|
|
2332 (defun widget-echo-help-mouse ()
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|
|
2333 "Display the help message for the widget under the mouse.
|
|
|
2334 Enable with (run-with-idle-timer 1 t 'widget-echo-help-mouse)"
|
|
|
2335 (let* ((pos (mouse-position))
|
|
|
2336 (frame (car pos))
|
|
|
2337 (x (car (cdr pos)))
|
|
|
2338 (y (cdr (cdr pos)))
|
|
|
2339 (win (window-at x y frame))
|
|
|
2340 (where (coordinates-in-window-p (cons x y) win)))
|
|
|
2341 (when (consp where)
|
|
|
2342 (save-window-excursion
|
|
|
2343 (progn ; save-excursion
|
|
|
2344 (select-window win)
|
|
|
2345 (let* ((result (compute-motion (window-start win)
|
|
|
2346 '(0 . 0)
|
|
|
2347 (window-end win)
|
|
|
2348 where
|
|
|
2349 (window-width win)
|
|
|
2350 (cons (window-hscroll) 0)
|
|
|
2351 win)))
|
|
|
2352 (when (and (eq (nth 1 result) x)
|
|
|
2353 (eq (nth 2 result) y))
|
|
|
2354 (widget-echo-help (nth 0 result))))))))
|
|
|
2355 (unless track-mouse
|
|
|
2356 (setq track-mouse t)
|
|
|
2357 (add-hook 'post-command-hook 'widget-stop-mouse-tracking)))
|
|
|
2358
|
|
|
2359 (defun widget-stop-mouse-tracking (&rest args)
|
|
|
2360 "Stop the mouse tracking done while idle."
|
|
|
2361 (remove-hook 'post-command-hook 'widget-stop-mouse-tracking)
|
|
|
2362 (setq track-mouse nil))
|
|
|
2363
|
|
|
2364 (defun widget-at (pos)
|
|
|
2365 "The button or field at POS."
|
|
|
2366 (or (get-text-property pos 'button)
|
|
|
2367 (get-text-property pos 'field)))
|
|
|
2368
|
|
|
2369 (defun widget-echo-help (pos)
|
|
|
2370 "Display the help echo for widget at POS."
|
|
|
2371 (let* ((widget (widget-at pos))
|
|
|
2372 (help-echo (and widget (widget-get widget :help-echo))))
|
|
|
2373 (cond ((stringp help-echo)
|
|
|
2374 (message "%s" help-echo))
|
|
|
2375 ((and (symbolp help-echo) (fboundp help-echo)
|
|
|
2376 (stringp (setq help-echo (funcall help-echo widget))))
|
|
|
2377 (message "%s" help-echo)))))
|
|
|
2378
|
|
|
2379 ;;; The End:
|
|
|
2380
|
|
|
2381 (provide 'wid-edit)
|
|
|
2382
|
|
|
2383 ;; wid-edit.el ends here
|
