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1 ;;; widget-edit.el --- Functions for creating and using widgets.
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2 ;;
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3 ;; Copyright (C) 1996 Free Software Foundation, Inc.
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4 ;;
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5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
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6 ;; Keywords: extensions
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7 ;; Version: 1.20
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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 (&rest args) nil)
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51 (defmacro defface (&rest args) nil)
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52 (when (fboundp 'copy-face)
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53 (copy-face 'default 'widget-documentation-face)
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54 (copy-face 'bold 'widget-button-face)
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55 (copy-face 'italic 'widget-field-face))
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56 (defvar widget-mouse-face 'highlight)
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57 (defvar widget-menu-max-size 40)))
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58
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59 ;;; Compatibility.
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60
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86
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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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80
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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 'emacs)
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88
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89 (defface widget-documentation-face '((((class color)
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90 (background dark))
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91 (:foreground "lime green"))
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92 (((class color)
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93 (background light))
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94 (:foreground "dark green"))
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95 (t nil))
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96 "Face used for documentation text."
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97 :group 'widgets)
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98
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99 (defface widget-button-face '((t (:bold t)))
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100 "Face used for widget buttons."
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101 :group 'widgets)
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102
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103 (defcustom widget-mouse-face 'highlight
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104 "Face used for widget buttons when the mouse is above them."
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105 :type 'face
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106 :group 'widgets)
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107
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108 (defface widget-field-face '((((class grayscale color)
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109 (background light))
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110 (:background "light gray"))
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111 (((class grayscale color)
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112 (background dark))
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113 (:background "dark gray"))
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114 (t
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115 (:italic t)))
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116 "Face used for editable fields."
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117 :group 'widgets)
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118
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119 (defcustom widget-menu-max-size 40
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120 "Largest number of items allowed in a popup-menu.
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121 Larger menus are read through the minibuffer."
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122 :group 'widgets
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123 :type 'integer)
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124
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125 ;;; Utility functions.
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126 ;;
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127 ;; These are not really widget specific.
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128
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129 (defun widget-plist-member (plist prop)
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130 ;; Return non-nil if PLIST has the property PROP.
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131 ;; PLIST is a property list, which is a list of the form
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132 ;; (PROP1 VALUE1 PROP2 VALUE2 ...). PROP is a symbol.
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133 ;; Unlike `plist-get', this allows you to distinguish between a missing
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134 ;; property and a property with the value nil.
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135 ;; The value is actually the tail of PLIST whose car is PROP.
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136 (while (and plist (not (eq (car plist) prop)))
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137 (setq plist (cdr (cdr plist))))
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138 plist)
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139
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140 (defun widget-princ-to-string (object)
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141 ;; Return string representation of OBJECT, any Lisp object.
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142 ;; No quoting characters are used; no delimiters are printed around
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143 ;; the contents of strings.
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144 (save-excursion
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145 (set-buffer (get-buffer-create " *widget-tmp*"))
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146 (erase-buffer)
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147 (let ((standard-output (current-buffer)))
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148 (princ object))
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149 (buffer-string)))
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150
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151 (defun widget-clear-undo ()
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152 "Clear all undo information."
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153 (buffer-disable-undo (current-buffer))
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154 (buffer-enable-undo))
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155
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156 (defun widget-choose (title items &optional event)
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157 "Choose an item from a list.
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158
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159 First argument TITLE is the name of the list.
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160 Second argument ITEMS is an alist (NAME . VALUE).
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161 Optional third argument EVENT is an input event.
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162
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163 The user is asked to choose between each NAME from the items alist,
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164 and the VALUE of the chosen element will be returned. If EVENT is a
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165 mouse event, and the number of elements in items is less than
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166 `widget-menu-max-size', a popup menu will be used, otherwise the
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167 minibuffer."
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168 (cond ((and (< (length items) widget-menu-max-size)
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169 event (fboundp 'x-popup-menu) window-system)
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170 ;; We are in Emacs-19, pressed by the mouse
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171 (x-popup-menu event
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172 (list title (cons "" items))))
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173 ((and (< (length items) widget-menu-max-size)
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174 event (fboundp 'popup-menu) window-system)
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175 ;; We are in XEmacs, pressed by the mouse
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176 (let ((val (get-popup-menu-response
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177 (cons ""
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178 (mapcar
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179 (function
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180 (lambda (x)
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181 (vector (car x) (list (car x)) t)))
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182 items)))))
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183 (setq val (and val
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184 (listp (event-object val))
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185 (stringp (car-safe (event-object val)))
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186 (car (event-object val))))
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187 (cdr (assoc val items))))
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188 (t
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189 (cdr (assoc (completing-read (concat title ": ")
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190 items nil t)
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191 items)))))
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192
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193 ;;; Widget text specifications.
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194 ;;
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195 ;; These functions are for specifying text properties.
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196
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197 (defun widget-specify-none (from to)
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198 ;; Clear all text properties between FROM and TO.
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199 (set-text-properties from to nil))
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200
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201 (defun widget-specify-text (from to)
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202 ;; Default properties.
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203 (add-text-properties from to (list 'read-only t
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204 'front-sticky t
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205 'start-open t
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206 'end-open t
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207 'rear-nonsticky nil)))
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208
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209 (defun widget-specify-field (widget from to)
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210 ;; Specify editable button for WIDGET between FROM and TO.
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211 (widget-specify-field-update widget from to)
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212
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213 ;; Make it possible to edit the front end of the field.
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214 (add-text-properties (1- from) from (list 'rear-nonsticky t
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215 'end-open t
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216 'invisible t))
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217 (when (or (string-match "\\(.\\|\n\\)%v" (widget-get widget :format))
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218 (widget-get widget :hide-front-space))
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219 ;; WARNING: This is going to lose horrible if the character just
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220 ;; before the field can be modified (e.g. if it belongs to a
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221 ;; choice widget). We try to compensate by checking the format
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222 ;; string, and hope the user hasn't changed the :create method.
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223 (widget-make-intangible (- from 2) from 'end-open))
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224
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225 ;; Make it possible to edit back end of the field.
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226 (add-text-properties to (1+ to) (list 'front-sticky nil
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227 'read-only t
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228 'start-open t))
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229
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230 (cond ((widget-get widget :size)
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231 (put-text-property to (1+ to) 'invisible t)
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232 (when (or (string-match "%v\\(.\\|\n\\)" (widget-get widget :format))
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233 (widget-get widget :hide-rear-space))
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234 ;; WARNING: This is going to lose horrible if the character just
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235 ;; after the field can be modified (e.g. if it belongs to a
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236 ;; choice widget). We try to compensate by checking the format
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237 ;; string, and hope the user hasn't changed the :create method.
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238 (widget-make-intangible to (+ to 2) 'start-open)))
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239 ((string-match "XEmacs" emacs-version)
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240 ;; XEmacs does not allow you to insert before a read-only
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241 ;; character, even if it is start.open.
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242 ;; XEmacs does allow you to delete an read-only extent, so
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243 ;; making the terminating newline read only doesn't help.
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244 ;; I tried putting an invisible intangible read-only space
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245 ;; before the newline, which gave really weird effects.
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246 ;; So for now, we just have trust the user not to delete the
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247 ;; newline.
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248 (put-text-property to (1+ to) 'read-only nil))))
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249
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250 (defun widget-specify-field-update (widget from to)
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251 ;; Specify editable button for WIDGET between FROM and TO.
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252 (let ((map (or (widget-get widget :keymap)
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253 widget-keymap))
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254 (face (or (widget-get widget :value-face)
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255 'widget-field-face)))
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256 (set-text-properties from to (list 'field widget
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257 'read-only nil
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258 'keymap map
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259 'local-map map
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260 'face face))
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261 (unless (widget-get widget :size)
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262 (add-text-properties to (1+ to) (list 'field widget
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263 'face face
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264 'local-map map
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265 'keymap map)))))
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266
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267 (defun widget-specify-button (widget from to)
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268 ;; Specify button for WIDGET between FROM and TO.
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269 (let ((face (widget-apply widget :button-face-get)))
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270 (add-text-properties from to (list 'button widget
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271 'mouse-face widget-mouse-face
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272 'start-open t
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273 'end-open t
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274 'face face))))
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275
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276 (defun widget-specify-sample (widget from to)
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277 ;; Specify sample for WIDGET between FROM and TO.
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278 (let ((face (widget-apply widget :sample-face-get)))
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279 (when face
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280 (add-text-properties from to (list 'start-open t
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281 'end-open t
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282 'face face)))))
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283
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284 (defun widget-specify-doc (widget from to)
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285 ;; Specify documentation for WIDGET between FROM and TO.
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286 (add-text-properties from to (list 'widget-doc widget
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287 'face 'widget-documentation-face)))
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288
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289 (defmacro widget-specify-insert (&rest form)
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290 ;; Execute FORM without inheriting any text properties.
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291 `(save-restriction
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292 (let ((inhibit-read-only t)
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293 result
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294 after-change-functions)
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295 (insert "<>")
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296 (narrow-to-region (- (point) 2) (point))
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297 (widget-specify-none (point-min) (point-max))
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298 (goto-char (1+ (point-min)))
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299 (setq result (progn ,@form))
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300 (delete-region (point-min) (1+ (point-min)))
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301 (delete-region (1- (point-max)) (point-max))
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302 (goto-char (point-max))
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303 result)))
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304
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305 ;;; Widget Properties.
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306
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307 (defun widget-put (widget property value)
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308 "In WIDGET set PROPERTY to VALUE.
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309 The value can later be retrived with `widget-get'."
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310 (setcdr widget (plist-put (cdr widget) property value)))
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311
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312 (defun widget-get (widget property)
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313 "In WIDGET, get the value of PROPERTY.
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314 The value could either be specified when the widget was created, or
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315 later with `widget-put'."
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316 (cond ((widget-plist-member (cdr widget) property)
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317 (plist-get (cdr widget) property))
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318 ((car widget)
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319 (widget-get (get (car widget) 'widget-type) property))
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320 (t nil)))
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321
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322 (defun widget-member (widget property)
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323 "Non-nil iff there is a definition in WIDGET for PROPERTY."
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324 (cond ((widget-plist-member (cdr widget) property)
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325 t)
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326 ((car widget)
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327 (widget-member (get (car widget) 'widget-type) property))
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328 (t nil)))
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329
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330 (defun widget-apply (widget property &rest args)
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331 "Apply the value of WIDGET's PROPERTY to the widget itself.
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332 ARGS are passed as extra argments to the function."
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333 (apply (widget-get widget property) widget args))
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334
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335 (defun widget-value (widget)
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336 "Extract the current value of WIDGET."
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337 (widget-apply widget
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338 :value-to-external (widget-apply widget :value-get)))
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339
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340 (defun widget-value-set (widget value)
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341 "Set the current value of WIDGET to VALUE."
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342 (widget-apply widget
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343 :value-set (widget-apply widget
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344 :value-to-internal value)))
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345
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346 (defun widget-match-inline (widget vals)
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347 ;; In WIDGET, match the start of VALS.
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348 (cond ((widget-get widget :inline)
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349 (widget-apply widget :match-inline vals))
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350 ((and vals
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351 (widget-apply widget :match (car vals)))
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352 (cons (list (car vals)) (cdr vals)))
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353 (t nil)))
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354
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355 ;;; Creating Widgets.
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356
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357 ;;;###autoload
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70
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358 (defun widget-create (type &rest args)
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359 "Create widget of TYPE.
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360 The optional ARGS are additional keyword arguments."
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361 (let ((widget (apply 'widget-convert type args)))
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362 (widget-apply widget :create)
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363 widget))
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364
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80
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365 (defun widget-create-child-and-convert (parent type &rest args)
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366 "As part of the widget PARENT, create a child widget TYPE.
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367 The child is converted, using the keyword arguments ARGS."
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368 (let ((widget (apply 'widget-convert type args)))
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369 (widget-put widget :parent parent)
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370 (unless (widget-get widget :indent)
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371 (widget-put widget :indent (+ (or (widget-get parent :indent) 0)
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372 (or (widget-get widget :extra-offset) 0)
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373 (widget-get parent :offset))))
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374 (widget-apply widget :create)
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375 widget))
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376
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377 (defun widget-create-child (parent type)
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378 "Create widget of TYPE."
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379 (let ((widget (copy-list type)))
|
|
|
380 (widget-put widget :parent parent)
|
|
|
381 (unless (widget-get widget :indent)
|
|
|
382 (widget-put widget :indent (+ (or (widget-get parent :indent) 0)
|
|
|
383 (or (widget-get widget :extra-offset) 0)
|
|
|
384 (widget-get parent :offset))))
|
|
|
385 (widget-apply widget :create)
|
|
|
386 widget))
|
|
|
387
|
|
|
388 (defun widget-create-child-value (parent type value)
|
|
|
389 "Create widget of TYPE with value VALUE."
|
|
|
390 (let ((widget (copy-list type)))
|
|
|
391 (widget-put widget :value (widget-apply widget :value-to-internal value))
|
|
|
392 (widget-put widget :parent parent)
|
|
|
393 (unless (widget-get widget :indent)
|
|
|
394 (widget-put widget :indent (+ (or (widget-get parent :indent) 0)
|
|
|
395 (or (widget-get widget :extra-offset) 0)
|
|
|
396 (widget-get parent :offset))))
|
|
|
397 (widget-apply widget :create)
|
|
|
398 widget))
|
|
|
399
|
|
|
400 ;;;###autoload
|
|
70
|
401 (defun widget-delete (widget)
|
|
|
402 "Delete WIDGET."
|
|
|
403 (widget-apply widget :delete))
|
|
|
404
|
|
|
405 (defun widget-convert (type &rest args)
|
|
|
406 "Convert TYPE to a widget without inserting it in the buffer.
|
|
|
407 The optional ARGS are additional keyword arguments."
|
|
|
408 ;; Don't touch the type.
|
|
|
409 (let* ((widget (if (symbolp type)
|
|
|
410 (list type)
|
|
|
411 (copy-list type)))
|
|
|
412 (current widget)
|
|
|
413 (keys args))
|
|
|
414 ;; First set the :args keyword.
|
|
|
415 (while (cdr current) ;Look in the type.
|
|
|
416 (let ((next (car (cdr current))))
|
|
|
417 (if (and (symbolp next) (eq (aref (symbol-name next) 0) ?:))
|
|
|
418 (setq current (cdr (cdr current)))
|
|
|
419 (setcdr current (list :args (cdr current)))
|
|
|
420 (setq current nil))))
|
|
|
421 (while args ;Look in the args.
|
|
|
422 (let ((next (nth 0 args)))
|
|
|
423 (if (and (symbolp next) (eq (aref (symbol-name next) 0) ?:))
|
|
|
424 (setq args (nthcdr 2 args))
|
|
|
425 (widget-put widget :args args)
|
|
|
426 (setq args nil))))
|
|
|
427 ;; Then Convert the widget.
|
|
|
428 (setq type widget)
|
|
|
429 (while type
|
|
80
|
430 (let ((convert-widget (plist-get (cdr type) :convert-widget)))
|
|
70
|
431 (if convert-widget
|
|
|
432 (setq widget (funcall convert-widget widget))))
|
|
|
433 (setq type (get (car type) 'widget-type)))
|
|
|
434 ;; Finally set the keyword args.
|
|
|
435 (while keys
|
|
|
436 (let ((next (nth 0 keys)))
|
|
|
437 (if (and (symbolp next) (eq (aref (symbol-name next) 0) ?:))
|
|
|
438 (progn
|
|
|
439 (widget-put widget next (nth 1 keys))
|
|
|
440 (setq keys (nthcdr 2 keys)))
|
|
|
441 (setq keys nil))))
|
|
80
|
442 ;; Convert the :value to internal format.
|
|
|
443 (if (widget-member widget :value)
|
|
|
444 (let ((value (widget-get widget :value)))
|
|
|
445 (widget-put widget
|
|
|
446 :value (widget-apply widget :value-to-internal value))))
|
|
70
|
447 ;; Return the newly create widget.
|
|
|
448 widget))
|
|
|
449
|
|
|
450 (defun widget-insert (&rest args)
|
|
|
451 "Call `insert' with ARGS and make the text read only."
|
|
|
452 (let ((inhibit-read-only t)
|
|
|
453 after-change-functions
|
|
|
454 (from (point)))
|
|
|
455 (apply 'insert args)
|
|
|
456 (widget-specify-text from (point))))
|
|
|
457
|
|
|
458 ;;; Keymap and Comands.
|
|
|
459
|
|
|
460 (defvar widget-keymap nil
|
|
|
461 "Keymap containing useful binding for buffers containing widgets.
|
|
|
462 Recommended as a parent keymap for modes using widgets.")
|
|
|
463
|
|
|
464 (if widget-keymap
|
|
|
465 ()
|
|
|
466 (setq widget-keymap (make-sparse-keymap))
|
|
|
467 (set-keymap-parent widget-keymap global-map)
|
|
|
468 (define-key widget-keymap "\t" 'widget-forward)
|
|
|
469 (define-key widget-keymap "\M-\t" 'widget-backward)
|
|
|
470 (define-key widget-keymap [(shift tab)] 'widget-backward)
|
|
80
|
471 (define-key widget-keymap [(shift tab)] 'widget-backward)
|
|
|
472 (define-key widget-keymap [backtab] 'widget-backward)
|
|
70
|
473 (if (string-match "XEmacs" (emacs-version))
|
|
|
474 (define-key widget-keymap [button2] 'widget-button-click)
|
|
80
|
475 (define-key widget-keymap [menu-bar] 'nil)
|
|
70
|
476 (define-key widget-keymap [mouse-2] 'widget-button-click))
|
|
|
477 (define-key widget-keymap "\C-m" 'widget-button-press))
|
|
|
478
|
|
|
479 (defvar widget-global-map global-map
|
|
|
480 "Keymap used for events the widget does not handle themselves.")
|
|
|
481 (make-variable-buffer-local 'widget-global-map)
|
|
|
482
|
|
|
483 (defun widget-button-click (event)
|
|
|
484 "Activate button below mouse pointer."
|
|
|
485 (interactive "@e")
|
|
|
486 (widget-button-press (event-point event) event))
|
|
|
487
|
|
|
488 (defun widget-button-press (pos &optional event)
|
|
|
489 "Activate button at POS."
|
|
|
490 (interactive "@d")
|
|
|
491 (let* ((button (get-text-property pos 'button)))
|
|
|
492 (if button
|
|
|
493 (widget-apply button :action event)
|
|
|
494 (call-interactively
|
|
|
495 (lookup-key widget-global-map (this-command-keys))))))
|
|
|
496
|
|
82
|
497 (defun widget-move (arg)
|
|
|
498 "Move point to the ARG next field or button.
|
|
|
499 ARG may be negative to move backward."
|
|
70
|
500 (while (> arg 0)
|
|
|
501 (setq arg (1- arg))
|
|
|
502 (let ((next (cond ((get-text-property (point) 'button)
|
|
|
503 (next-single-property-change (point) 'button))
|
|
|
504 ((get-text-property (point) 'field)
|
|
|
505 (next-single-property-change (point) 'field))
|
|
|
506 (t
|
|
|
507 (point)))))
|
|
|
508 (if (null next) ; Widget extends to end. of buffer
|
|
|
509 (setq next (point-min)))
|
|
|
510 (let ((button (next-single-property-change next 'button))
|
|
|
511 (field (next-single-property-change next 'field)))
|
|
|
512 (cond ((or (get-text-property next 'button)
|
|
|
513 (get-text-property next 'field))
|
|
|
514 (goto-char next))
|
|
|
515 ((and button field)
|
|
|
516 (goto-char (min button field)))
|
|
|
517 (button (goto-char button))
|
|
|
518 (field (goto-char field))
|
|
|
519 (t
|
|
|
520 (let ((button (next-single-property-change (point-min) 'button))
|
|
|
521 (field (next-single-property-change (point-min) 'field)))
|
|
|
522 (cond ((and button field) (goto-char (min button field)))
|
|
|
523 (button (goto-char button))
|
|
|
524 (field (goto-char field))
|
|
|
525 (t
|
|
|
526 (error "No buttons or fields found")))))))))
|
|
|
527 (while (< arg 0)
|
|
|
528 (if (= (point-min) (point))
|
|
|
529 (forward-char 1))
|
|
|
530 (setq arg (1+ arg))
|
|
|
531 (let ((previous (cond ((get-text-property (1- (point)) 'button)
|
|
|
532 (previous-single-property-change (point) 'button))
|
|
|
533 ((get-text-property (1- (point)) 'field)
|
|
|
534 (previous-single-property-change (point) 'field))
|
|
|
535 (t
|
|
|
536 (point)))))
|
|
|
537 (if (null previous) ; Widget extends to beg. of buffer
|
|
|
538 (setq previous (point-max)))
|
|
|
539 (let ((button (previous-single-property-change previous 'button))
|
|
|
540 (field (previous-single-property-change previous 'field)))
|
|
|
541 (cond ((and button field)
|
|
|
542 (goto-char (max button field)))
|
|
|
543 (button (goto-char button))
|
|
|
544 (field (goto-char field))
|
|
|
545 (t
|
|
|
546 (let ((button (previous-single-property-change
|
|
|
547 (point-max) 'button))
|
|
|
548 (field (previous-single-property-change
|
|
|
549 (point-max) 'field)))
|
|
|
550 (cond ((and button field) (goto-char (max button field)))
|
|
|
551 (button (goto-char button))
|
|
|
552 (field (goto-char field))
|
|
|
553 (t
|
|
|
554 (error "No buttons or fields found"))))))))
|
|
|
555 (let ((button (previous-single-property-change (point) 'button))
|
|
|
556 (field (previous-single-property-change (point) 'field)))
|
|
|
557 (cond ((and button field)
|
|
|
558 (goto-char (max button field)))
|
|
|
559 (button (goto-char button))
|
|
|
560 (field (goto-char field)))))
|
|
82
|
561 (widget-echo-help (point))
|
|
|
562 (run-hooks 'widget-move-hook))
|
|
|
563
|
|
|
564 (defun widget-forward (arg)
|
|
|
565 "Move point to the next field or button.
|
|
|
566 With optional ARG, move across that many fields."
|
|
|
567 (interactive "p")
|
|
|
568 (run-hooks 'widget-forward-hook)
|
|
|
569 (widget-move arg))
|
|
70
|
570
|
|
|
571 (defun widget-backward (arg)
|
|
|
572 "Move point to the previous field or button.
|
|
|
573 With optional ARG, move across that many fields."
|
|
|
574 (interactive "p")
|
|
82
|
575 (run-hooks 'widget-backward-hook)
|
|
|
576 (widget-move (- arg)))
|
|
70
|
577
|
|
|
578 ;;; Setting up the buffer.
|
|
|
579
|
|
|
580 (defvar widget-field-new nil)
|
|
|
581 ;; List of all newly created editable fields in the buffer.
|
|
|
582 (make-variable-buffer-local 'widget-field-new)
|
|
|
583
|
|
|
584 (defvar widget-field-list nil)
|
|
|
585 ;; List of all editable fields in the buffer.
|
|
|
586 (make-variable-buffer-local 'widget-field-list)
|
|
|
587
|
|
|
588 (defun widget-setup ()
|
|
|
589 "Setup current buffer so editing string widgets works."
|
|
|
590 (let ((inhibit-read-only t)
|
|
80
|
591 (after-change-functions nil)
|
|
70
|
592 field)
|
|
|
593 (while widget-field-new
|
|
|
594 (setq field (car widget-field-new)
|
|
|
595 widget-field-new (cdr widget-field-new)
|
|
|
596 widget-field-list (cons field widget-field-list))
|
|
|
597 (let ((from (widget-get field :value-from))
|
|
|
598 (to (widget-get field :value-to)))
|
|
|
599 (widget-specify-field field from to)
|
|
|
600 (move-marker from (1- from))
|
|
|
601 (move-marker to (1+ to)))))
|
|
|
602 (widget-clear-undo)
|
|
|
603 ;; We need to maintain text properties and size of the editing fields.
|
|
|
604 (make-local-variable 'after-change-functions)
|
|
|
605 (if widget-field-list
|
|
|
606 (setq after-change-functions '(widget-after-change))
|
|
|
607 (setq after-change-functions nil)))
|
|
|
608
|
|
|
609 (defvar widget-field-last nil)
|
|
|
610 ;; Last field containing point.
|
|
|
611 (make-variable-buffer-local 'widget-field-last)
|
|
|
612
|
|
|
613 (defvar widget-field-was nil)
|
|
|
614 ;; The widget data before the change.
|
|
|
615 (make-variable-buffer-local 'widget-field-was)
|
|
|
616
|
|
|
617 (defun widget-field-find (pos)
|
|
|
618 ;; Find widget whose editing field is located at POS.
|
|
|
619 ;; Return nil if POS is not inside and editing field.
|
|
|
620 ;;
|
|
|
621 ;; This is only used in `widget-field-modified', since ordinarily
|
|
|
622 ;; you would just test the field property.
|
|
|
623 (let ((fields widget-field-list)
|
|
|
624 field found)
|
|
|
625 (while fields
|
|
|
626 (setq field (car fields)
|
|
|
627 fields (cdr fields))
|
|
|
628 (let ((from (widget-get field :value-from))
|
|
|
629 (to (widget-get field :value-to)))
|
|
|
630 (if (and from to (< from pos) (> to pos))
|
|
|
631 (setq fields nil
|
|
|
632 found field))))
|
|
|
633 found))
|
|
|
634
|
|
|
635 (defun widget-after-change (from to old)
|
|
|
636 ;; Adjust field size and text properties.
|
|
|
637 (condition-case nil
|
|
|
638 (let ((field (widget-field-find from))
|
|
|
639 (inhibit-read-only t))
|
|
|
640 (cond ((null field))
|
|
|
641 ((not (eq field (widget-field-find to)))
|
|
80
|
642 (debug)
|
|
70
|
643 (message "Error: `widget-after-change' called on two fields"))
|
|
|
644 (t
|
|
|
645 (let ((size (widget-get field :size)))
|
|
|
646 (if size
|
|
|
647 (let ((begin (1+ (widget-get field :value-from)))
|
|
|
648 (end (1- (widget-get field :value-to))))
|
|
|
649 (widget-specify-field-update field begin end)
|
|
|
650 (cond ((< (- end begin) size)
|
|
|
651 ;; Field too small.
|
|
|
652 (save-excursion
|
|
|
653 (goto-char end)
|
|
80
|
654 (insert-char ?\ (- (+ begin size) end))
|
|
|
655 (widget-specify-field-update field
|
|
|
656 begin
|
|
|
657 (+ begin size))))
|
|
70
|
658 ((> (- end begin) size)
|
|
|
659 ;; Field too large and
|
|
|
660 (if (or (< (point) (+ begin size))
|
|
|
661 (> (point) end))
|
|
|
662 ;; Point is outside extra space.
|
|
|
663 (setq begin (+ begin size))
|
|
|
664 ;; Point is within the extra space.
|
|
|
665 (setq begin (point)))
|
|
|
666 (save-excursion
|
|
|
667 (goto-char end)
|
|
|
668 (while (and (eq (preceding-char) ?\ )
|
|
|
669 (> (point) begin))
|
|
|
670 (delete-backward-char 1))))))
|
|
|
671 (widget-specify-field-update field from to)))
|
|
|
672 (widget-apply field :notify field))))
|
|
|
673 (error (debug))))
|
|
|
674
|
|
80
|
675 ;;; Widget Functions
|
|
|
676 ;;
|
|
|
677 ;; These functions are used in the definition of multiple widgets.
|
|
|
678
|
|
|
679 (defun widget-children-value-delete (widget)
|
|
|
680 "Delete all :children and :buttons in WIDGET."
|
|
|
681 (mapcar 'widget-delete (widget-get widget :children))
|
|
|
682 (widget-put widget :children nil)
|
|
|
683 (mapcar 'widget-delete (widget-get widget :buttons))
|
|
|
684 (widget-put widget :buttons nil))
|
|
|
685
|
|
|
686 (defun widget-types-convert-widget (widget)
|
|
|
687 "Convert :args as widget types in WIDGET."
|
|
|
688 (widget-put widget :args (mapcar 'widget-convert (widget-get widget :args)))
|
|
|
689 widget)
|
|
|
690
|
|
70
|
691 ;;; The `default' Widget.
|
|
|
692
|
|
|
693 (define-widget 'default nil
|
|
|
694 "Basic widget other widgets are derived from."
|
|
|
695 :value-to-internal (lambda (widget value) value)
|
|
|
696 :value-to-external (lambda (widget value) value)
|
|
|
697 :create 'widget-default-create
|
|
80
|
698 :indent nil
|
|
|
699 :offset 0
|
|
70
|
700 :format-handler 'widget-default-format-handler
|
|
80
|
701 :button-face-get 'widget-default-button-face-get
|
|
86
|
702 :sample-face-get 'widget-default-sample-face-get
|
|
70
|
703 :delete 'widget-default-delete
|
|
|
704 :value-set 'widget-default-value-set
|
|
|
705 :value-inline 'widget-default-value-inline
|
|
|
706 :menu-tag-get 'widget-default-menu-tag-get
|
|
80
|
707 :validate (lambda (widget) nil)
|
|
70
|
708 :action 'widget-default-action
|
|
|
709 :notify 'widget-default-notify)
|
|
|
710
|
|
|
711 (defun widget-default-create (widget)
|
|
|
712 "Create WIDGET at point in the current buffer."
|
|
|
713 (widget-specify-insert
|
|
|
714 (let ((from (point))
|
|
|
715 (tag (widget-get widget :tag))
|
|
|
716 (doc (widget-get widget :doc))
|
|
|
717 button-begin button-end
|
|
86
|
718 sample-begin sample-end
|
|
70
|
719 doc-begin doc-end
|
|
|
720 value-pos)
|
|
|
721 (insert (widget-get widget :format))
|
|
|
722 (goto-char from)
|
|
|
723 ;; Parse % escapes in format.
|
|
|
724 (while (re-search-forward "%\\(.\\)" nil t)
|
|
|
725 (let ((escape (aref (match-string 1) 0)))
|
|
|
726 (replace-match "" t t)
|
|
|
727 (cond ((eq escape ?%)
|
|
|
728 (insert "%"))
|
|
|
729 ((eq escape ?\[)
|
|
|
730 (setq button-begin (point)))
|
|
|
731 ((eq escape ?\])
|
|
|
732 (setq button-end (point)))
|
|
86
|
733 ((eq escape ?\{)
|
|
|
734 (setq sample-begin (point)))
|
|
|
735 ((eq escape ?\})
|
|
|
736 (setq sample-end (point)))
|
|
80
|
737 ((eq escape ?n)
|
|
|
738 (when (widget-get widget :indent)
|
|
|
739 (insert "\n")
|
|
|
740 (insert-char ? (widget-get widget :indent))))
|
|
70
|
741 ((eq escape ?t)
|
|
|
742 (if tag
|
|
|
743 (insert tag)
|
|
|
744 (let ((standard-output (current-buffer)))
|
|
|
745 (princ (widget-get widget :value)))))
|
|
|
746 ((eq escape ?d)
|
|
|
747 (when doc
|
|
|
748 (setq doc-begin (point))
|
|
|
749 (insert doc)
|
|
|
750 (while (eq (preceding-char) ?\n)
|
|
|
751 (delete-backward-char 1))
|
|
|
752 (insert "\n")
|
|
|
753 (setq doc-end (point))))
|
|
|
754 ((eq escape ?v)
|
|
|
755 (if (and button-begin (not button-end))
|
|
|
756 (widget-apply widget :value-create)
|
|
|
757 (setq value-pos (point))))
|
|
|
758 (t
|
|
|
759 (widget-apply widget :format-handler escape)))))
|
|
86
|
760 ;; Specify button, sample, and doc, and insert value.
|
|
70
|
761 (and button-begin button-end
|
|
|
762 (widget-specify-button widget button-begin button-end))
|
|
86
|
763 (and sample-begin sample-end
|
|
|
764 (widget-specify-sample widget sample-begin sample-end))
|
|
70
|
765 (and doc-begin doc-end
|
|
|
766 (widget-specify-doc widget doc-begin doc-end))
|
|
|
767 (when value-pos
|
|
|
768 (goto-char value-pos)
|
|
|
769 (widget-apply widget :value-create)))
|
|
|
770 (let ((from (copy-marker (point-min)))
|
|
|
771 (to (copy-marker (point-max))))
|
|
|
772 (widget-specify-text from to)
|
|
|
773 (set-marker-insertion-type from t)
|
|
|
774 (set-marker-insertion-type to nil)
|
|
|
775 (widget-put widget :from from)
|
|
|
776 (widget-put widget :to to))))
|
|
|
777
|
|
|
778 (defun widget-default-format-handler (widget escape)
|
|
80
|
779 ;; We recognize the %h escape by default.
|
|
|
780 (let* ((buttons (widget-get widget :buttons))
|
|
|
781 (doc-property (widget-get widget :documentation-property))
|
|
|
782 (doc-try (cond ((widget-get widget :doc))
|
|
|
783 ((symbolp doc-property)
|
|
|
784 (documentation-property (widget-get widget :value)
|
|
|
785 doc-property))
|
|
|
786 (t
|
|
|
787 (funcall doc-property (widget-get widget :value)))))
|
|
|
788 (doc-text (and (stringp doc-try)
|
|
|
789 (> (length doc-try) 1)
|
|
|
790 doc-try)))
|
|
|
791 (cond ((eq escape ?h)
|
|
|
792 (when doc-text
|
|
|
793 (and (eq (preceding-char) ?\n)
|
|
|
794 (widget-get widget :indent)
|
|
|
795 (insert-char ? (widget-get widget :indent)))
|
|
|
796 ;; The `*' in the beginning is redundant.
|
|
|
797 (when (eq (aref doc-text 0) ?*)
|
|
|
798 (setq doc-text (substring doc-text 1)))
|
|
|
799 ;; Get rid of trailing newlines.
|
|
|
800 (when (string-match "\n+\\'" doc-text)
|
|
|
801 (setq doc-text (substring doc-text 0 (match-beginning 0))))
|
|
|
802 (push (if (string-match "\n." doc-text)
|
|
|
803 ;; Allow multiline doc to be hiden.
|
|
|
804 (widget-create-child-and-convert
|
|
|
805 widget 'widget-help
|
|
|
806 :doc (progn
|
|
|
807 (string-match "\\`.*" doc-text)
|
|
|
808 (match-string 0 doc-text))
|
|
|
809 :widget-doc doc-text
|
|
|
810 "?")
|
|
|
811 ;; A single line is just inserted.
|
|
|
812 (widget-create-child-and-convert
|
|
|
813 widget 'item :format "%d" :doc doc-text nil))
|
|
|
814 buttons)))
|
|
|
815 (t
|
|
|
816 (error "Unknown escape `%c'" escape)))
|
|
|
817 (widget-put widget :buttons buttons)))
|
|
|
818
|
|
|
819 (defun widget-default-button-face-get (widget)
|
|
|
820 ;; Use :button-face or widget-button-face
|
|
|
821 (or (widget-get widget :button-face) 'widget-button-face))
|
|
70
|
822
|
|
86
|
823 (defun widget-default-sample-face-get (widget)
|
|
|
824 ;; Use :sample-face.
|
|
|
825 (widget-get widget :sample-face))
|
|
|
826
|
|
70
|
827 (defun widget-default-delete (widget)
|
|
|
828 ;; Remove widget from the buffer.
|
|
|
829 (let ((from (widget-get widget :from))
|
|
|
830 (to (widget-get widget :to))
|
|
|
831 (inhibit-read-only t)
|
|
|
832 after-change-functions)
|
|
|
833 (widget-apply widget :value-delete)
|
|
|
834 (delete-region from to)
|
|
|
835 (set-marker from nil)
|
|
|
836 (set-marker to nil)))
|
|
|
837
|
|
|
838 (defun widget-default-value-set (widget value)
|
|
|
839 ;; Recreate widget with new value.
|
|
|
840 (save-excursion
|
|
|
841 (goto-char (widget-get widget :from))
|
|
|
842 (widget-apply widget :delete)
|
|
|
843 (widget-put widget :value value)
|
|
|
844 (widget-apply widget :create)))
|
|
|
845
|
|
|
846 (defun widget-default-value-inline (widget)
|
|
|
847 ;; Wrap value in a list unless it is inline.
|
|
|
848 (if (widget-get widget :inline)
|
|
|
849 (widget-value widget)
|
|
|
850 (list (widget-value widget))))
|
|
|
851
|
|
|
852 (defun widget-default-menu-tag-get (widget)
|
|
|
853 ;; Use tag or value for menus.
|
|
|
854 (or (widget-get widget :menu-tag)
|
|
|
855 (widget-get widget :tag)
|
|
|
856 (widget-princ-to-string (widget-get widget :value))))
|
|
|
857
|
|
|
858 (defun widget-default-action (widget &optional event)
|
|
|
859 ;; Notify the parent when a widget change
|
|
|
860 (let ((parent (widget-get widget :parent)))
|
|
|
861 (when parent
|
|
|
862 (widget-apply parent :notify widget event))))
|
|
|
863
|
|
|
864 (defun widget-default-notify (widget child &optional event)
|
|
|
865 ;; Pass notification to parent.
|
|
|
866 (widget-default-action widget event))
|
|
|
867
|
|
|
868 ;;; The `item' Widget.
|
|
|
869
|
|
|
870 (define-widget 'item 'default
|
|
|
871 "Constant items for inclusion in other widgets."
|
|
|
872 :convert-widget 'widget-item-convert-widget
|
|
|
873 :value-create 'widget-item-value-create
|
|
|
874 :value-delete 'ignore
|
|
|
875 :value-get 'widget-item-value-get
|
|
|
876 :match 'widget-item-match
|
|
|
877 :match-inline 'widget-item-match-inline
|
|
|
878 :action 'widget-item-action
|
|
|
879 :format "%t\n")
|
|
|
880
|
|
|
881 (defun widget-item-convert-widget (widget)
|
|
80
|
882 ;; Initialize :value from :args in WIDGET.
|
|
70
|
883 (let ((args (widget-get widget :args)))
|
|
|
884 (when args
|
|
80
|
885 (widget-put widget :value (widget-apply widget
|
|
|
886 :value-to-internal (car args)))
|
|
70
|
887 (widget-put widget :args nil)))
|
|
|
888 widget)
|
|
|
889
|
|
|
890 (defun widget-item-value-create (widget)
|
|
|
891 ;; Insert the printed representation of the value.
|
|
|
892 (let ((standard-output (current-buffer)))
|
|
|
893 (princ (widget-get widget :value))))
|
|
|
894
|
|
|
895 (defun widget-item-match (widget value)
|
|
|
896 ;; Match if the value is the same.
|
|
|
897 (equal (widget-get widget :value) value))
|
|
|
898
|
|
|
899 (defun widget-item-match-inline (widget values)
|
|
|
900 ;; Match if the value is the same.
|
|
|
901 (let ((value (widget-get widget :value)))
|
|
|
902 (and (listp value)
|
|
|
903 (<= (length value) (length values))
|
|
|
904 (let ((head (subseq values 0 (length value))))
|
|
|
905 (and (equal head value)
|
|
|
906 (cons head (subseq values (length value))))))))
|
|
|
907
|
|
|
908 (defun widget-item-action (widget &optional event)
|
|
|
909 ;; Just notify itself.
|
|
|
910 (widget-apply widget :notify widget event))
|
|
|
911
|
|
|
912 (defun widget-item-value-get (widget)
|
|
|
913 ;; Items are simple.
|
|
|
914 (widget-get widget :value))
|
|
|
915
|
|
80
|
916 ;;; The `push-button' Widget.
|
|
70
|
917
|
|
80
|
918 (define-widget 'push-button 'item
|
|
70
|
919 "A pushable button."
|
|
|
920 :format "%[[%t]%]")
|
|
|
921
|
|
|
922 ;;; The `link' Widget.
|
|
|
923
|
|
|
924 (define-widget 'link 'item
|
|
|
925 "An embedded link."
|
|
82
|
926 :help-echo "Push me to follow the link."
|
|
70
|
927 :format "%[_%t_%]")
|
|
|
928
|
|
80
|
929 ;;; The `info-link' Widget.
|
|
|
930
|
|
|
931 (define-widget 'info-link 'link
|
|
|
932 "A link to an info file."
|
|
|
933 :action 'widget-info-link-action)
|
|
|
934
|
|
|
935 (defun widget-info-link-action (widget &optional event)
|
|
|
936 "Open the info node specified by WIDGET."
|
|
|
937 (Info-goto-node (widget-value widget)))
|
|
|
938
|
|
|
939 ;;; The `url-link' Widget.
|
|
70
|
940
|
|
80
|
941 (define-widget 'url-link 'link
|
|
|
942 "A link to an www page."
|
|
|
943 :action 'widget-url-link-action)
|
|
|
944
|
|
|
945 (defun widget-url-link-action (widget &optional event)
|
|
|
946 "Open the url specified by WIDGET."
|
|
|
947 (require 'browse-url)
|
|
|
948 (funcall browse-url-browser-function (widget-value widget)))
|
|
|
949
|
|
|
950 ;;; The `editable-field' Widget.
|
|
|
951
|
|
|
952 (define-widget 'editable-field 'default
|
|
70
|
953 "An editable text field."
|
|
|
954 :convert-widget 'widget-item-convert-widget
|
|
|
955 :format "%v"
|
|
|
956 :value ""
|
|
80
|
957 :action 'widget-field-action
|
|
70
|
958 :value-create 'widget-field-value-create
|
|
|
959 :value-delete 'widget-field-value-delete
|
|
|
960 :value-get 'widget-field-value-get
|
|
|
961 :match 'widget-field-match)
|
|
|
962
|
|
80
|
963 ;; History of field minibuffer edits.
|
|
|
964 (defvar widget-field-history nil)
|
|
|
965
|
|
|
966 (defun widget-field-action (widget &optional event)
|
|
|
967 ;; Edit the value in the minibuffer.
|
|
|
968 (let ((tag (widget-apply widget :menu-tag-get))
|
|
|
969 (invalid (widget-apply widget :validate)))
|
|
|
970 (when invalid
|
|
|
971 (error (widget-get invalid :error)))
|
|
|
972 (widget-value-set widget
|
|
|
973 (widget-apply widget
|
|
|
974 :value-to-external
|
|
|
975 (read-string (concat tag ": ")
|
|
|
976 (widget-apply
|
|
|
977 widget
|
|
|
978 :value-to-internal
|
|
|
979 (widget-value widget))
|
|
|
980 'widget-field-history)))
|
|
|
981 (widget-apply widget :notify widget event)
|
|
|
982 (widget-setup)))
|
|
|
983
|
|
70
|
984 (defun widget-field-value-create (widget)
|
|
|
985 ;; Create an editable text field.
|
|
|
986 (insert " ")
|
|
|
987 (let ((size (widget-get widget :size))
|
|
|
988 (value (widget-get widget :value))
|
|
|
989 (from (point)))
|
|
80
|
990 (insert value)
|
|
|
991 (and size
|
|
|
992 (< (length value) size)
|
|
|
993 (insert-char ?\ (- size (length value))))
|
|
70
|
994 (unless (memq widget widget-field-list)
|
|
|
995 (setq widget-field-new (cons widget widget-field-new)))
|
|
|
996 (widget-put widget :value-to (copy-marker (point)))
|
|
|
997 (set-marker-insertion-type (widget-get widget :value-to) nil)
|
|
|
998 (if (null size)
|
|
|
999 (insert ?\n)
|
|
80
|
1000 (insert ?\ ))
|
|
|
1001 (widget-put widget :value-from (copy-marker from))
|
|
|
1002 (set-marker-insertion-type (widget-get widget :value-from) t)))
|
|
70
|
1003
|
|
|
1004 (defun widget-field-value-delete (widget)
|
|
|
1005 ;; Remove the widget from the list of active editing fields.
|
|
|
1006 (setq widget-field-list (delq widget widget-field-list))
|
|
|
1007 (set-marker (widget-get widget :value-from) nil)
|
|
|
1008 (set-marker (widget-get widget :value-to) nil))
|
|
|
1009
|
|
|
1010 (defun widget-field-value-get (widget)
|
|
|
1011 ;; Return current text in editing field.
|
|
|
1012 (let ((from (widget-get widget :value-from))
|
|
80
|
1013 (to (widget-get widget :value-to))
|
|
|
1014 (size (widget-get widget :size))
|
|
|
1015 (old (current-buffer)))
|
|
70
|
1016 (if (and from to)
|
|
|
1017 (progn
|
|
80
|
1018 (set-buffer (marker-buffer from))
|
|
70
|
1019 (setq from (1+ from)
|
|
|
1020 to (1- to))
|
|
80
|
1021 (while (and size
|
|
|
1022 (not (zerop size))
|
|
|
1023 (> to from)
|
|
70
|
1024 (eq (char-after (1- to)) ?\ ))
|
|
|
1025 (setq to (1- to)))
|
|
80
|
1026 (prog1 (buffer-substring-no-properties from to)
|
|
|
1027 (set-buffer old)))
|
|
70
|
1028 (widget-get widget :value))))
|
|
|
1029
|
|
|
1030 (defun widget-field-match (widget value)
|
|
|
1031 ;; Match any string.
|
|
|
1032 (stringp value))
|
|
|
1033
|
|
80
|
1034 ;;; The `text' Widget.
|
|
|
1035
|
|
|
1036 (define-widget 'text 'editable-field
|
|
|
1037 "A multiline text area.")
|
|
70
|
1038
|
|
80
|
1039 ;;; The `menu-choice' Widget.
|
|
|
1040
|
|
|
1041 (define-widget 'menu-choice 'default
|
|
70
|
1042 "A menu of options."
|
|
80
|
1043 :convert-widget 'widget-types-convert-widget
|
|
70
|
1044 :format "%[%t%]: %v"
|
|
80
|
1045 :case-fold t
|
|
70
|
1046 :tag "choice"
|
|
80
|
1047 :void '(item :format "invalid (%t)\n")
|
|
70
|
1048 :value-create 'widget-choice-value-create
|
|
80
|
1049 :value-delete 'widget-children-value-delete
|
|
70
|
1050 :value-get 'widget-choice-value-get
|
|
|
1051 :value-inline 'widget-choice-value-inline
|
|
|
1052 :action 'widget-choice-action
|
|
|
1053 :error "Make a choice"
|
|
|
1054 :validate 'widget-choice-validate
|
|
|
1055 :match 'widget-choice-match
|
|
|
1056 :match-inline 'widget-choice-match-inline)
|
|
|
1057
|
|
|
1058 (defun widget-choice-value-create (widget)
|
|
|
1059 ;; Insert the first choice that matches the value.
|
|
|
1060 (let ((value (widget-get widget :value))
|
|
|
1061 (args (widget-get widget :args))
|
|
|
1062 current)
|
|
|
1063 (while args
|
|
|
1064 (setq current (car args)
|
|
|
1065 args (cdr args))
|
|
|
1066 (when (widget-apply current :match value)
|
|
80
|
1067 (widget-put widget :children (list (widget-create-child-value
|
|
|
1068 widget current value)))
|
|
70
|
1069 (widget-put widget :choice current)
|
|
|
1070 (setq args nil
|
|
|
1071 current nil)))
|
|
|
1072 (when current
|
|
|
1073 (let ((void (widget-get widget :void)))
|
|
80
|
1074 (widget-put widget :children (list (widget-create-child-and-convert
|
|
|
1075 widget void :value value)))
|
|
70
|
1076 (widget-put widget :choice void)))))
|
|
|
1077
|
|
|
1078 (defun widget-choice-value-get (widget)
|
|
|
1079 ;; Get value of the child widget.
|
|
|
1080 (widget-value (car (widget-get widget :children))))
|
|
|
1081
|
|
|
1082 (defun widget-choice-value-inline (widget)
|
|
|
1083 ;; Get value of the child widget.
|
|
|
1084 (widget-apply (car (widget-get widget :children)) :value-inline))
|
|
|
1085
|
|
|
1086 (defun widget-choice-action (widget &optional event)
|
|
|
1087 ;; Make a choice.
|
|
|
1088 (let ((args (widget-get widget :args))
|
|
|
1089 (old (widget-get widget :choice))
|
|
|
1090 (tag (widget-apply widget :menu-tag-get))
|
|
80
|
1091 (completion-ignore-case (widget-get widget :case-fold))
|
|
70
|
1092 current choices)
|
|
80
|
1093 ;; Remember old value.
|
|
|
1094 (if (and old (not (widget-apply widget :validate)))
|
|
|
1095 (let* ((external (widget-value widget))
|
|
|
1096 (internal (widget-apply old :value-to-internal external)))
|
|
|
1097 (widget-put old :value internal)))
|
|
|
1098 ;; Find new choice.
|
|
70
|
1099 (setq current
|
|
|
1100 (cond ((= (length args) 0)
|
|
|
1101 nil)
|
|
|
1102 ((= (length args) 1)
|
|
|
1103 (nth 0 args))
|
|
|
1104 ((and (= (length args) 2)
|
|
|
1105 (memq old args))
|
|
|
1106 (if (eq old (nth 0 args))
|
|
|
1107 (nth 1 args)
|
|
|
1108 (nth 0 args)))
|
|
|
1109 (t
|
|
|
1110 (while args
|
|
|
1111 (setq current (car args)
|
|
|
1112 args (cdr args))
|
|
|
1113 (setq choices
|
|
|
1114 (cons (cons (widget-apply current :menu-tag-get)
|
|
|
1115 current)
|
|
|
1116 choices)))
|
|
80
|
1117 (widget-choose tag (reverse choices) event))))
|
|
70
|
1118 (when current
|
|
80
|
1119 (widget-value-set widget
|
|
|
1120 (widget-apply current :value-to-external
|
|
|
1121 (widget-get current :value)))
|
|
|
1122 (widget-apply widget :notify widget event)
|
|
|
1123 (widget-setup)))
|
|
70
|
1124 ;; Notify parent.
|
|
|
1125 (widget-apply widget :notify widget event)
|
|
|
1126 (widget-clear-undo))
|
|
|
1127
|
|
|
1128 (defun widget-choice-validate (widget)
|
|
|
1129 ;; Valid if we have made a valid choice.
|
|
|
1130 (let ((void (widget-get widget :void))
|
|
|
1131 (choice (widget-get widget :choice))
|
|
|
1132 (child (car (widget-get widget :children))))
|
|
|
1133 (if (eq void choice)
|
|
|
1134 widget
|
|
|
1135 (widget-apply child :validate))))
|
|
|
1136
|
|
|
1137 (defun widget-choice-match (widget value)
|
|
|
1138 ;; Matches if one of the choices matches.
|
|
|
1139 (let ((args (widget-get widget :args))
|
|
|
1140 current found)
|
|
|
1141 (while (and args (not found))
|
|
|
1142 (setq current (car args)
|
|
|
1143 args (cdr args)
|
|
|
1144 found (widget-apply current :match value)))
|
|
|
1145 found))
|
|
|
1146
|
|
|
1147 (defun widget-choice-match-inline (widget values)
|
|
|
1148 ;; Matches if one of the choices matches.
|
|
|
1149 (let ((args (widget-get widget :args))
|
|
|
1150 current found)
|
|
|
1151 (while (and args (null found))
|
|
|
1152 (setq current (car args)
|
|
|
1153 args (cdr args)
|
|
|
1154 found (widget-match-inline current values)))
|
|
|
1155 found))
|
|
|
1156
|
|
|
1157 ;;; The `toggle' Widget.
|
|
|
1158
|
|
80
|
1159 (define-widget 'toggle 'menu-choice
|
|
70
|
1160 "Toggle between two states."
|
|
|
1161 :convert-widget 'widget-toggle-convert-widget
|
|
80
|
1162 :format "%v"
|
|
70
|
1163 :on "on"
|
|
|
1164 :off "off")
|
|
|
1165
|
|
|
1166 (defun widget-toggle-convert-widget (widget)
|
|
|
1167 ;; Create the types representing the `on' and `off' states.
|
|
80
|
1168 (let ((on-type (widget-get widget :on-type))
|
|
70
|
1169 (off-type (widget-get widget :off-type)))
|
|
|
1170 (unless on-type
|
|
80
|
1171 (setq on-type
|
|
|
1172 (list 'choice-item
|
|
|
1173 :value t
|
|
|
1174 :match (lambda (widget value) value)
|
|
|
1175 :tag (widget-get widget :on))))
|
|
70
|
1176 (unless off-type
|
|
80
|
1177 (setq off-type
|
|
|
1178 (list 'choice-item :value nil :tag (widget-get widget :off))))
|
|
70
|
1179 (widget-put widget :args (list on-type off-type)))
|
|
|
1180 widget)
|
|
|
1181
|
|
|
1182 ;;; The `checkbox' Widget.
|
|
|
1183
|
|
|
1184 (define-widget 'checkbox 'toggle
|
|
|
1185 "A checkbox toggle."
|
|
|
1186 :convert-widget 'widget-item-convert-widget
|
|
80
|
1187 :on-type '(choice-item :format "%[[X]%]" t)
|
|
|
1188 :off-type '(choice-item :format "%[[ ]%]" nil))
|
|
70
|
1189
|
|
|
1190 ;;; The `checklist' Widget.
|
|
|
1191
|
|
|
1192 (define-widget 'checklist 'default
|
|
|
1193 "A multiple choice widget."
|
|
80
|
1194 :convert-widget 'widget-types-convert-widget
|
|
70
|
1195 :format "%v"
|
|
80
|
1196 :offset 4
|
|
70
|
1197 :entry-format "%b %v"
|
|
|
1198 :menu-tag "checklist"
|
|
80
|
1199 :greedy nil
|
|
70
|
1200 :value-create 'widget-checklist-value-create
|
|
80
|
1201 :value-delete 'widget-children-value-delete
|
|
70
|
1202 :value-get 'widget-checklist-value-get
|
|
|
1203 :validate 'widget-checklist-validate
|
|
|
1204 :match 'widget-checklist-match
|
|
|
1205 :match-inline 'widget-checklist-match-inline)
|
|
|
1206
|
|
|
1207 (defun widget-checklist-value-create (widget)
|
|
|
1208 ;; Insert all values
|
|
|
1209 (let ((alist (widget-checklist-match-find widget (widget-get widget :value)))
|
|
|
1210 (args (widget-get widget :args)))
|
|
|
1211 (while args
|
|
|
1212 (widget-checklist-add-item widget (car args) (assq (car args) alist))
|
|
|
1213 (setq args (cdr args)))
|
|
|
1214 (widget-put widget :children (nreverse (widget-get widget :children)))))
|
|
|
1215
|
|
|
1216 (defun widget-checklist-add-item (widget type chosen)
|
|
|
1217 ;; Create checklist item in WIDGET of type TYPE.
|
|
|
1218 ;; If the item is checked, CHOSEN is a cons whose cdr is the value.
|
|
80
|
1219 (and (eq (preceding-char) ?\n)
|
|
|
1220 (widget-get widget :indent)
|
|
|
1221 (insert-char ? (widget-get widget :indent)))
|
|
70
|
1222 (widget-specify-insert
|
|
|
1223 (let* ((children (widget-get widget :children))
|
|
|
1224 (buttons (widget-get widget :buttons))
|
|
|
1225 (from (point))
|
|
|
1226 child button)
|
|
|
1227 (insert (widget-get widget :entry-format))
|
|
|
1228 (goto-char from)
|
|
|
1229 ;; Parse % escapes in format.
|
|
|
1230 (while (re-search-forward "%\\([bv%]\\)" nil t)
|
|
|
1231 (let ((escape (aref (match-string 1) 0)))
|
|
|
1232 (replace-match "" t t)
|
|
|
1233 (cond ((eq escape ?%)
|
|
|
1234 (insert "%"))
|
|
|
1235 ((eq escape ?b)
|
|
80
|
1236 (setq button (widget-create-child-and-convert
|
|
|
1237 widget 'checkbox :value (not (null chosen)))))
|
|
70
|
1238 ((eq escape ?v)
|
|
|
1239 (setq child
|
|
|
1240 (cond ((not chosen)
|
|
80
|
1241 (widget-create-child widget type))
|
|
70
|
1242 ((widget-get type :inline)
|
|
80
|
1243 (widget-create-child-value
|
|
|
1244 widget type (cdr chosen)))
|
|
70
|
1245 (t
|
|
80
|
1246 (widget-create-child-value
|
|
|
1247 widget type (car (cdr chosen)))))))
|
|
70
|
1248 (t
|
|
|
1249 (error "Unknown escape `%c'" escape)))))
|
|
|
1250 ;; Update properties.
|
|
|
1251 (and button child (widget-put child :button button))
|
|
|
1252 (and button (widget-put widget :buttons (cons button buttons)))
|
|
|
1253 (and child (widget-put widget :children (cons child children))))))
|
|
|
1254
|
|
|
1255 (defun widget-checklist-match (widget values)
|
|
|
1256 ;; All values must match a type in the checklist.
|
|
|
1257 (and (listp values)
|
|
|
1258 (null (cdr (widget-checklist-match-inline widget values)))))
|
|
|
1259
|
|
|
1260 (defun widget-checklist-match-inline (widget values)
|
|
|
1261 ;; Find the values which match a type in the checklist.
|
|
|
1262 (let ((greedy (widget-get widget :greedy))
|
|
|
1263 (args (copy-list (widget-get widget :args)))
|
|
|
1264 found rest)
|
|
|
1265 (while values
|
|
|
1266 (let ((answer (widget-checklist-match-up args values)))
|
|
|
1267 (cond (answer
|
|
|
1268 (let ((vals (widget-match-inline answer values)))
|
|
|
1269 (setq found (append found (car vals))
|
|
|
1270 values (cdr vals)
|
|
|
1271 args (delq answer args))))
|
|
|
1272 (greedy
|
|
|
1273 (setq rest (append rest (list (car values)))
|
|
|
1274 values (cdr values)))
|
|
|
1275 (t
|
|
|
1276 (setq rest (append rest values)
|
|
|
1277 values nil)))))
|
|
|
1278 (cons found rest)))
|
|
|
1279
|
|
80
|
1280 (defun widget-checklist-match-find (widget vals)
|
|
|
1281 ;; Find the vals which match a type in the checklist.
|
|
70
|
1282 ;; Return an alist of (TYPE MATCH).
|
|
|
1283 (let ((greedy (widget-get widget :greedy))
|
|
|
1284 (args (copy-list (widget-get widget :args)))
|
|
|
1285 found)
|
|
80
|
1286 (while vals
|
|
|
1287 (let ((answer (widget-checklist-match-up args vals)))
|
|
70
|
1288 (cond (answer
|
|
80
|
1289 (let ((match (widget-match-inline answer vals)))
|
|
|
1290 (setq found (cons (cons answer (car match)) found)
|
|
|
1291 vals (cdr match)
|
|
70
|
1292 args (delq answer args))))
|
|
|
1293 (greedy
|
|
80
|
1294 (setq vals (cdr vals)))
|
|
70
|
1295 (t
|
|
80
|
1296 (setq vals nil)))))
|
|
70
|
1297 found))
|
|
|
1298
|
|
80
|
1299 (defun widget-checklist-match-up (args vals)
|
|
|
1300 ;; Rerturn the first type from ARGS that matches VALS.
|
|
70
|
1301 (let (current found)
|
|
|
1302 (while (and args (null found))
|
|
|
1303 (setq current (car args)
|
|
|
1304 args (cdr args)
|
|
80
|
1305 found (widget-match-inline current vals)))
|
|
|
1306 (if found
|
|
|
1307 current
|
|
|
1308 nil)))
|
|
70
|
1309
|
|
|
1310 (defun widget-checklist-value-get (widget)
|
|
|
1311 ;; The values of all selected items.
|
|
|
1312 (let ((children (widget-get widget :children))
|
|
|
1313 child result)
|
|
|
1314 (while children
|
|
|
1315 (setq child (car children)
|
|
|
1316 children (cdr children))
|
|
|
1317 (if (widget-value (widget-get child :button))
|
|
|
1318 (setq result (append result (widget-apply child :value-inline)))))
|
|
|
1319 result))
|
|
|
1320
|
|
|
1321 (defun widget-checklist-validate (widget)
|
|
|
1322 ;; Ticked chilren must be valid.
|
|
|
1323 (let ((children (widget-get widget :children))
|
|
|
1324 child button found)
|
|
|
1325 (while (and children (not found))
|
|
|
1326 (setq child (car children)
|
|
|
1327 children (cdr children)
|
|
|
1328 button (widget-get child :button)
|
|
|
1329 found (and (widget-value button)
|
|
|
1330 (widget-apply child :validate))))
|
|
|
1331 found))
|
|
|
1332
|
|
|
1333 ;;; The `option' Widget
|
|
|
1334
|
|
|
1335 (define-widget 'option 'checklist
|
|
|
1336 "An widget with an optional item."
|
|
|
1337 :inline t)
|
|
|
1338
|
|
|
1339 ;;; The `choice-item' Widget.
|
|
|
1340
|
|
|
1341 (define-widget 'choice-item 'item
|
|
|
1342 "Button items that delegate action events to their parents."
|
|
|
1343 :action 'widget-choice-item-action
|
|
80
|
1344 :format "%[%t%] \n")
|
|
70
|
1345
|
|
|
1346 (defun widget-choice-item-action (widget &optional event)
|
|
|
1347 ;; Tell parent what happened.
|
|
|
1348 (widget-apply (widget-get widget :parent) :action event))
|
|
|
1349
|
|
|
1350 ;;; The `radio-button' Widget.
|
|
|
1351
|
|
|
1352 (define-widget 'radio-button 'toggle
|
|
|
1353 "A radio button for use in the `radio' widget."
|
|
|
1354 :notify 'widget-radio-button-notify
|
|
|
1355 :on-type '(choice-item :format "%[(*)%]" t)
|
|
|
1356 :off-type '(choice-item :format "%[( )%]" nil))
|
|
|
1357
|
|
|
1358 (defun widget-radio-button-notify (widget child &optional event)
|
|
|
1359 ;; Notify the parent.
|
|
|
1360 (widget-apply (widget-get widget :parent) :action widget event))
|
|
|
1361
|
|
80
|
1362 ;;; The `radio-button-choice' Widget.
|
|
70
|
1363
|
|
80
|
1364 (define-widget 'radio-button-choice 'default
|
|
70
|
1365 "Select one of multiple options."
|
|
80
|
1366 :convert-widget 'widget-types-convert-widget
|
|
|
1367 :offset 4
|
|
70
|
1368 :format "%v"
|
|
|
1369 :entry-format "%b %v"
|
|
|
1370 :menu-tag "radio"
|
|
|
1371 :value-create 'widget-radio-value-create
|
|
80
|
1372 :value-delete 'widget-children-value-delete
|
|
70
|
1373 :value-get 'widget-radio-value-get
|
|
|
1374 :value-inline 'widget-radio-value-inline
|
|
|
1375 :value-set 'widget-radio-value-set
|
|
|
1376 :error "You must push one of the buttons"
|
|
|
1377 :validate 'widget-radio-validate
|
|
|
1378 :match 'widget-choice-match
|
|
|
1379 :match-inline 'widget-choice-match-inline
|
|
|
1380 :action 'widget-radio-action)
|
|
|
1381
|
|
|
1382 (defun widget-radio-value-create (widget)
|
|
|
1383 ;; Insert all values
|
|
|
1384 (let ((args (widget-get widget :args))
|
|
|
1385 arg)
|
|
|
1386 (while args
|
|
|
1387 (setq arg (car args)
|
|
|
1388 args (cdr args))
|
|
80
|
1389 (widget-radio-add-item widget arg))))
|
|
70
|
1390
|
|
|
1391 (defun widget-radio-add-item (widget type)
|
|
|
1392 "Add to radio widget WIDGET a new radio button item of type TYPE."
|
|
80
|
1393 ;; (setq type (widget-convert type))
|
|
|
1394 (and (eq (preceding-char) ?\n)
|
|
|
1395 (widget-get widget :indent)
|
|
|
1396 (insert-char ? (widget-get widget :indent)))
|
|
70
|
1397 (widget-specify-insert
|
|
|
1398 (let* ((value (widget-get widget :value))
|
|
|
1399 (children (widget-get widget :children))
|
|
|
1400 (buttons (widget-get widget :buttons))
|
|
|
1401 (from (point))
|
|
|
1402 (chosen (and (null (widget-get widget :choice))
|
|
|
1403 (widget-apply type :match value)))
|
|
|
1404 child button)
|
|
|
1405 (insert (widget-get widget :entry-format))
|
|
|
1406 (goto-char from)
|
|
|
1407 ;; Parse % escapes in format.
|
|
|
1408 (while (re-search-forward "%\\([bv%]\\)" nil t)
|
|
|
1409 (let ((escape (aref (match-string 1) 0)))
|
|
|
1410 (replace-match "" t t)
|
|
|
1411 (cond ((eq escape ?%)
|
|
|
1412 (insert "%"))
|
|
|
1413 ((eq escape ?b)
|
|
80
|
1414 (setq button (widget-create-child-and-convert
|
|
|
1415 widget 'radio-button
|
|
|
1416 :value (not (null chosen)))))
|
|
70
|
1417 ((eq escape ?v)
|
|
|
1418 (setq child (if chosen
|
|
80
|
1419 (widget-create-child-value
|
|
|
1420 widget type value)
|
|
|
1421 (widget-create-child widget type))))
|
|
70
|
1422 (t
|
|
|
1423 (error "Unknown escape `%c'" escape)))))
|
|
|
1424 ;; Update properties.
|
|
|
1425 (when chosen
|
|
|
1426 (widget-put widget :choice type))
|
|
|
1427 (when button
|
|
|
1428 (widget-put child :button button)
|
|
|
1429 (widget-put widget :buttons (nconc buttons (list button))))
|
|
|
1430 (when child
|
|
|
1431 (widget-put widget :children (nconc children (list child))))
|
|
|
1432 child)))
|
|
|
1433
|
|
|
1434 (defun widget-radio-value-get (widget)
|
|
|
1435 ;; Get value of the child widget.
|
|
|
1436 (let ((chosen (widget-radio-chosen widget)))
|
|
|
1437 (and chosen (widget-value chosen))))
|
|
|
1438
|
|
|
1439 (defun widget-radio-chosen (widget)
|
|
|
1440 "Return the widget representing the chosen radio button."
|
|
|
1441 (let ((children (widget-get widget :children))
|
|
|
1442 current found)
|
|
|
1443 (while children
|
|
|
1444 (setq current (car children)
|
|
|
1445 children (cdr children))
|
|
|
1446 (let* ((button (widget-get current :button))
|
|
|
1447 (value (widget-apply button :value-get)))
|
|
|
1448 (when value
|
|
|
1449 (setq found current
|
|
|
1450 children nil))))
|
|
|
1451 found))
|
|
|
1452
|
|
|
1453 (defun widget-radio-value-inline (widget)
|
|
|
1454 ;; Get value of the child widget.
|
|
|
1455 (let ((children (widget-get widget :children))
|
|
|
1456 current found)
|
|
|
1457 (while children
|
|
|
1458 (setq current (car children)
|
|
|
1459 children (cdr children))
|
|
|
1460 (let* ((button (widget-get current :button))
|
|
|
1461 (value (widget-apply button :value-get)))
|
|
|
1462 (when value
|
|
|
1463 (setq found (widget-apply current :value-inline)
|
|
|
1464 children nil))))
|
|
|
1465 found))
|
|
|
1466
|
|
|
1467 (defun widget-radio-value-set (widget value)
|
|
|
1468 ;; We can't just delete and recreate a radio widget, since children
|
|
|
1469 ;; can be added after the original creation and won't be recreated
|
|
|
1470 ;; by `:create'.
|
|
|
1471 (let ((children (widget-get widget :children))
|
|
|
1472 current found)
|
|
|
1473 (while children
|
|
|
1474 (setq current (car children)
|
|
|
1475 children (cdr children))
|
|
|
1476 (let* ((button (widget-get current :button))
|
|
|
1477 (match (and (not found)
|
|
|
1478 (widget-apply current :match value))))
|
|
|
1479 (widget-value-set button match)
|
|
|
1480 (if match
|
|
|
1481 (widget-value-set current value))
|
|
|
1482 (setq found (or found match))))))
|
|
|
1483
|
|
|
1484 (defun widget-radio-validate (widget)
|
|
|
1485 ;; Valid if we have made a valid choice.
|
|
|
1486 (let ((children (widget-get widget :children))
|
|
|
1487 current found button)
|
|
|
1488 (while (and children (not found))
|
|
|
1489 (setq current (car children)
|
|
|
1490 children (cdr children)
|
|
|
1491 button (widget-get current :button)
|
|
|
1492 found (widget-apply button :value-get)))
|
|
|
1493 (if found
|
|
|
1494 (widget-apply current :validate)
|
|
|
1495 widget)))
|
|
|
1496
|
|
|
1497 (defun widget-radio-action (widget child event)
|
|
|
1498 ;; Check if a radio button was pressed.
|
|
|
1499 (let ((children (widget-get widget :children))
|
|
|
1500 (buttons (widget-get widget :buttons))
|
|
|
1501 current)
|
|
|
1502 (when (memq child buttons)
|
|
|
1503 (while children
|
|
|
1504 (setq current (car children)
|
|
|
1505 children (cdr children))
|
|
|
1506 (let* ((button (widget-get current :button)))
|
|
|
1507 (cond ((eq child button)
|
|
|
1508 (widget-value-set button t))
|
|
|
1509 ((widget-value button)
|
|
|
1510 (widget-value-set button nil)))))))
|
|
|
1511 ;; Pass notification to parent.
|
|
|
1512 (widget-apply widget :notify child event))
|
|
|
1513
|
|
|
1514 ;;; The `insert-button' Widget.
|
|
|
1515
|
|
80
|
1516 (define-widget 'insert-button 'push-button
|
|
|
1517 "An insert button for the `editable-list' widget."
|
|
70
|
1518 :tag "INS"
|
|
|
1519 :action 'widget-insert-button-action)
|
|
|
1520
|
|
|
1521 (defun widget-insert-button-action (widget &optional event)
|
|
|
1522 ;; Ask the parent to insert a new item.
|
|
|
1523 (widget-apply (widget-get widget :parent)
|
|
|
1524 :insert-before (widget-get widget :widget)))
|
|
|
1525
|
|
|
1526 ;;; The `delete-button' Widget.
|
|
|
1527
|
|
80
|
1528 (define-widget 'delete-button 'push-button
|
|
|
1529 "A delete button for the `editable-list' widget."
|
|
70
|
1530 :tag "DEL"
|
|
|
1531 :action 'widget-delete-button-action)
|
|
|
1532
|
|
|
1533 (defun widget-delete-button-action (widget &optional event)
|
|
|
1534 ;; Ask the parent to insert a new item.
|
|
|
1535 (widget-apply (widget-get widget :parent)
|
|
|
1536 :delete-at (widget-get widget :widget)))
|
|
|
1537
|
|
80
|
1538 ;;; The `editable-list' Widget.
|
|
70
|
1539
|
|
80
|
1540 (define-widget 'editable-list 'default
|
|
70
|
1541 "A variable list of widgets of the same type."
|
|
80
|
1542 :convert-widget 'widget-types-convert-widget
|
|
|
1543 :offset 12
|
|
70
|
1544 :format "%v%i\n"
|
|
80
|
1545 :format-handler 'widget-editable-list-format-handler
|
|
70
|
1546 :entry-format "%i %d %v"
|
|
80
|
1547 :menu-tag "editable-list"
|
|
|
1548 :value-create 'widget-editable-list-value-create
|
|
|
1549 :value-delete 'widget-children-value-delete
|
|
|
1550 :value-get 'widget-editable-list-value-get
|
|
|
1551 :validate 'widget-editable-list-validate
|
|
|
1552 :match 'widget-editable-list-match
|
|
|
1553 :match-inline 'widget-editable-list-match-inline
|
|
|
1554 :insert-before 'widget-editable-list-insert-before
|
|
|
1555 :delete-at 'widget-editable-list-delete-at)
|
|
70
|
1556
|
|
80
|
1557 (defun widget-editable-list-format-handler (widget escape)
|
|
70
|
1558 ;; We recognize the insert button.
|
|
|
1559 (cond ((eq escape ?i)
|
|
80
|
1560 (and (widget-get widget :indent)
|
|
|
1561 (insert-char ? (widget-get widget :indent)))
|
|
|
1562 (widget-create-child-and-convert widget 'insert-button))
|
|
70
|
1563 (t
|
|
|
1564 (widget-default-format-handler widget escape))))
|
|
|
1565
|
|
80
|
1566 (defun widget-editable-list-value-create (widget)
|
|
70
|
1567 ;; Insert all values
|
|
|
1568 (let* ((value (widget-get widget :value))
|
|
|
1569 (type (nth 0 (widget-get widget :args)))
|
|
|
1570 (inlinep (widget-get type :inline))
|
|
|
1571 children)
|
|
|
1572 (widget-put widget :value-pos (copy-marker (point)))
|
|
|
1573 (set-marker-insertion-type (widget-get widget :value-pos) t)
|
|
|
1574 (while value
|
|
|
1575 (let ((answer (widget-match-inline type value)))
|
|
|
1576 (if answer
|
|
80
|
1577 (setq children (cons (widget-editable-list-entry-create
|
|
|
1578 widget
|
|
|
1579 (if inlinep
|
|
|
1580 (car answer)
|
|
|
1581 (car (car answer)))
|
|
|
1582 t)
|
|
70
|
1583 children)
|
|
|
1584 value (cdr answer))
|
|
|
1585 (setq value nil))))
|
|
|
1586 (widget-put widget :children (nreverse children))))
|
|
|
1587
|
|
80
|
1588 (defun widget-editable-list-value-get (widget)
|
|
70
|
1589 ;; Get value of the child widget.
|
|
|
1590 (apply 'append (mapcar (lambda (child) (widget-apply child :value-inline))
|
|
|
1591 (widget-get widget :children))))
|
|
|
1592
|
|
80
|
1593 (defun widget-editable-list-validate (widget)
|
|
70
|
1594 ;; All the chilren must be valid.
|
|
|
1595 (let ((children (widget-get widget :children))
|
|
|
1596 child found)
|
|
|
1597 (while (and children (not found))
|
|
|
1598 (setq child (car children)
|
|
|
1599 children (cdr children)
|
|
|
1600 found (widget-apply child :validate)))
|
|
|
1601 found))
|
|
|
1602
|
|
80
|
1603 (defun widget-editable-list-match (widget value)
|
|
|
1604 ;; Value must be a list and all the members must match the type.
|
|
70
|
1605 (and (listp value)
|
|
80
|
1606 (null (cdr (widget-editable-list-match-inline widget value)))))
|
|
70
|
1607
|
|
80
|
1608 (defun widget-editable-list-match-inline (widget value)
|
|
70
|
1609 (let ((type (nth 0 (widget-get widget :args)))
|
|
|
1610 (ok t)
|
|
|
1611 found)
|
|
|
1612 (while (and value ok)
|
|
|
1613 (let ((answer (widget-match-inline type value)))
|
|
|
1614 (if answer
|
|
|
1615 (setq found (append found (car answer))
|
|
|
1616 value (cdr answer))
|
|
|
1617 (setq ok nil))))
|
|
|
1618 (cons found value)))
|
|
|
1619
|
|
80
|
1620 (defun widget-editable-list-insert-before (widget before)
|
|
70
|
1621 ;; Insert a new child in the list of children.
|
|
|
1622 (save-excursion
|
|
|
1623 (let ((children (widget-get widget :children))
|
|
|
1624 (inhibit-read-only t)
|
|
|
1625 after-change-functions)
|
|
|
1626 (cond (before
|
|
80
|
1627 (goto-char (widget-get before :entry-from)))
|
|
70
|
1628 (t
|
|
|
1629 (goto-char (widget-get widget :value-pos))))
|
|
80
|
1630 (let ((child (widget-editable-list-entry-create
|
|
|
1631 widget nil nil)))
|
|
|
1632 (when (< (widget-get child :entry-from) (widget-get widget :from))
|
|
|
1633 (set-marker (widget-get widget :from)
|
|
|
1634 (widget-get child :entry-from)))
|
|
|
1635 (widget-specify-text (widget-get child :entry-from)
|
|
|
1636 (widget-get child :entry-to))
|
|
70
|
1637 (if (eq (car children) before)
|
|
|
1638 (widget-put widget :children (cons child children))
|
|
|
1639 (while (not (eq (car (cdr children)) before))
|
|
|
1640 (setq children (cdr children)))
|
|
|
1641 (setcdr children (cons child (cdr children)))))))
|
|
|
1642 (widget-setup)
|
|
|
1643 (widget-apply widget :notify widget))
|
|
|
1644
|
|
80
|
1645 (defun widget-editable-list-delete-at (widget child)
|
|
70
|
1646 ;; Delete child from list of children.
|
|
|
1647 (save-excursion
|
|
|
1648 (let ((buttons (copy-list (widget-get widget :buttons)))
|
|
|
1649 button
|
|
|
1650 (inhibit-read-only t)
|
|
|
1651 after-change-functions)
|
|
|
1652 (while buttons
|
|
|
1653 (setq button (car buttons)
|
|
|
1654 buttons (cdr buttons))
|
|
|
1655 (when (eq (widget-get button :widget) child)
|
|
|
1656 (widget-put widget
|
|
|
1657 :buttons (delq button (widget-get widget :buttons)))
|
|
|
1658 (widget-delete button))))
|
|
80
|
1659 (let ((entry-from (widget-get child :entry-from))
|
|
|
1660 (entry-to (widget-get child :entry-to))
|
|
|
1661 (inhibit-read-only t)
|
|
|
1662 after-change-functions)
|
|
|
1663 (widget-delete child)
|
|
|
1664 (delete-region entry-from entry-to)
|
|
|
1665 (set-marker entry-from nil)
|
|
|
1666 (set-marker entry-to nil))
|
|
70
|
1667 (widget-put widget :children (delq child (widget-get widget :children))))
|
|
|
1668 (widget-setup)
|
|
|
1669 (widget-apply widget :notify widget))
|
|
|
1670
|
|
80
|
1671 (defun widget-editable-list-entry-create (widget value conv)
|
|
70
|
1672 ;; Create a new entry to the list.
|
|
|
1673 (let ((type (nth 0 (widget-get widget :args)))
|
|
|
1674 child delete insert)
|
|
|
1675 (widget-specify-insert
|
|
|
1676 (save-excursion
|
|
80
|
1677 (and (widget-get widget :indent)
|
|
|
1678 (insert-char ? (widget-get widget :indent)))
|
|
|
1679 (insert (widget-get widget :entry-format)))
|
|
70
|
1680 ;; Parse % escapes in format.
|
|
|
1681 (while (re-search-forward "%\\(.\\)" nil t)
|
|
|
1682 (let ((escape (aref (match-string 1) 0)))
|
|
|
1683 (replace-match "" t t)
|
|
|
1684 (cond ((eq escape ?%)
|
|
|
1685 (insert "%"))
|
|
|
1686 ((eq escape ?i)
|
|
80
|
1687 (setq insert (widget-create-child-and-convert
|
|
|
1688 widget 'insert-button)))
|
|
70
|
1689 ((eq escape ?d)
|
|
80
|
1690 (setq delete (widget-create-child-and-convert
|
|
|
1691 widget 'delete-button)))
|
|
70
|
1692 ((eq escape ?v)
|
|
80
|
1693 (if conv
|
|
|
1694 (setq child (widget-create-child-value
|
|
|
1695 widget type value))
|
|
|
1696 (setq child (widget-create-child widget type))))
|
|
70
|
1697 (t
|
|
|
1698 (error "Unknown escape `%c'" escape)))))
|
|
|
1699 (widget-put widget
|
|
|
1700 :buttons (cons delete
|
|
|
1701 (cons insert
|
|
|
1702 (widget-get widget :buttons))))
|
|
80
|
1703 (let ((entry-from (copy-marker (point-min)))
|
|
|
1704 (entry-to (copy-marker (point-max))))
|
|
|
1705 (widget-specify-text entry-from entry-to)
|
|
|
1706 (set-marker-insertion-type entry-from t)
|
|
|
1707 (set-marker-insertion-type entry-to nil)
|
|
|
1708 (widget-put child :entry-from entry-from)
|
|
|
1709 (widget-put child :entry-to entry-to)))
|
|
70
|
1710 (widget-put insert :widget child)
|
|
|
1711 (widget-put delete :widget child)
|
|
|
1712 child))
|
|
|
1713
|
|
|
1714 ;;; The `group' Widget.
|
|
|
1715
|
|
|
1716 (define-widget 'group 'default
|
|
|
1717 "A widget which group other widgets inside."
|
|
80
|
1718 :convert-widget 'widget-types-convert-widget
|
|
70
|
1719 :format "%v"
|
|
|
1720 :value-create 'widget-group-value-create
|
|
80
|
1721 :value-delete 'widget-children-value-delete
|
|
|
1722 :value-get 'widget-editable-list-value-get
|
|
|
1723 :validate 'widget-editable-list-validate
|
|
70
|
1724 :match 'widget-group-match
|
|
|
1725 :match-inline 'widget-group-match-inline)
|
|
|
1726
|
|
|
1727 (defun widget-group-value-create (widget)
|
|
|
1728 ;; Create each component.
|
|
|
1729 (let ((args (widget-get widget :args))
|
|
|
1730 (value (widget-get widget :value))
|
|
|
1731 arg answer children)
|
|
|
1732 (while args
|
|
|
1733 (setq arg (car args)
|
|
|
1734 args (cdr args)
|
|
|
1735 answer (widget-match-inline arg value)
|
|
80
|
1736 value (cdr answer))
|
|
|
1737 (and (eq (preceding-char) ?\n)
|
|
|
1738 (widget-get widget :indent)
|
|
|
1739 (insert-char ? (widget-get widget :indent)))
|
|
|
1740 (push (cond ((null answer)
|
|
|
1741 (widget-create-child widget arg))
|
|
|
1742 ((widget-get arg :inline)
|
|
|
1743 (widget-create-child-value widget arg (car answer)))
|
|
|
1744 (t
|
|
|
1745 (widget-create-child-value widget arg (car (car answer)))))
|
|
|
1746 children))
|
|
70
|
1747 (widget-put widget :children (nreverse children))))
|
|
|
1748
|
|
|
1749 (defun widget-group-match (widget values)
|
|
|
1750 ;; Match if the components match.
|
|
|
1751 (and (listp values)
|
|
80
|
1752 (let ((match (widget-group-match-inline widget values)))
|
|
|
1753 (and match (null (cdr match))))))
|
|
70
|
1754
|
|
80
|
1755 (defun widget-group-match-inline (widget vals)
|
|
70
|
1756 ;; Match if the components match.
|
|
|
1757 (let ((args (widget-get widget :args))
|
|
80
|
1758 argument answer found)
|
|
70
|
1759 (while args
|
|
80
|
1760 (setq argument (car args)
|
|
70
|
1761 args (cdr args)
|
|
80
|
1762 answer (widget-match-inline argument vals))
|
|
70
|
1763 (if answer
|
|
80
|
1764 (setq vals (cdr answer)
|
|
70
|
1765 found (append found (car answer)))
|
|
80
|
1766 (setq vals nil
|
|
|
1767 args nil)))
|
|
70
|
1768 (if answer
|
|
80
|
1769 (cons found vals)
|
|
70
|
1770 nil)))
|
|
|
1771
|
|
80
|
1772 ;;; The `widget-help' Widget.
|
|
|
1773
|
|
|
1774 (define-widget 'widget-help 'push-button
|
|
|
1775 "The widget documentation button."
|
|
|
1776 :format "%[[%t]%] %d"
|
|
|
1777 :help-echo "Push me to toggle the documentation."
|
|
|
1778 :action 'widget-help-action)
|
|
|
1779
|
|
|
1780 (defun widget-help-action (widget &optional event)
|
|
|
1781 "Toggle documentation for WIDGET."
|
|
|
1782 (let ((old (widget-get widget :doc))
|
|
|
1783 (new (widget-get widget :widget-doc)))
|
|
|
1784 (widget-put widget :doc new)
|
|
|
1785 (widget-put widget :widget-doc old))
|
|
|
1786 (widget-value-set widget (widget-value widget)))
|
|
|
1787
|
|
70
|
1788 ;;; The Sexp Widgets.
|
|
|
1789
|
|
|
1790 (define-widget 'const 'item
|
|
80
|
1791 "An immutable sexp."
|
|
|
1792 :format "%t\n%d")
|
|
|
1793
|
|
|
1794 (define-widget 'function-item 'item
|
|
|
1795 "An immutable function name."
|
|
|
1796 :format "%v\n%h"
|
|
|
1797 :documentation-property (lambda (symbol)
|
|
|
1798 (condition-case nil
|
|
|
1799 (documentation symbol t)
|
|
|
1800 (error nil))))
|
|
70
|
1801
|
|
80
|
1802 (define-widget 'variable-item 'item
|
|
|
1803 "An immutable variable name."
|
|
|
1804 :format "%v\n%h"
|
|
|
1805 :documentation-property 'variable-documentation)
|
|
|
1806
|
|
|
1807 (define-widget 'string 'editable-field
|
|
|
1808 "A string"
|
|
|
1809 :tag "String"
|
|
|
1810 :format "%[%t%]: %v")
|
|
|
1811
|
|
|
1812 (define-widget 'regexp 'string
|
|
|
1813 "A regular expression."
|
|
|
1814 ;; Should do validation.
|
|
|
1815 :tag "Regexp")
|
|
70
|
1816
|
|
|
1817 (define-widget 'file 'string
|
|
80
|
1818 "A file widget.
|
|
|
1819 It will read a file name from the minibuffer when activated."
|
|
|
1820 :format "%[%t%]: %v"
|
|
70
|
1821 :tag "File"
|
|
|
1822 :action 'widget-file-action)
|
|
|
1823
|
|
|
1824 (defun widget-file-action (widget &optional event)
|
|
|
1825 ;; Read a file name from the minibuffer.
|
|
80
|
1826 (let* ((value (widget-value widget))
|
|
|
1827 (dir (file-name-directory value))
|
|
|
1828 (file (file-name-nondirectory value))
|
|
|
1829 (menu-tag (widget-apply widget :menu-tag-get))
|
|
|
1830 (must-match (widget-get widget :must-match))
|
|
|
1831 (answer (read-file-name (concat menu-tag ": (defalt `" value "') ")
|
|
|
1832 dir nil must-match file)))
|
|
|
1833 (widget-value-set widget (abbreviate-file-name answer))
|
|
|
1834 (widget-apply widget :notify widget event)
|
|
|
1835 (widget-setup)))
|
|
70
|
1836
|
|
|
1837 (define-widget 'directory 'file
|
|
80
|
1838 "A directory widget.
|
|
|
1839 It will read a directory name from the minibuffer when activated."
|
|
70
|
1840 :tag "Directory")
|
|
|
1841
|
|
|
1842 (define-widget 'symbol 'string
|
|
80
|
1843 "A lisp symbol."
|
|
|
1844 :value nil
|
|
|
1845 :tag "Symbol"
|
|
70
|
1846 :match (lambda (widget value) (symbolp value))
|
|
80
|
1847 :value-to-internal (lambda (widget value)
|
|
|
1848 (if (symbolp value)
|
|
|
1849 (symbol-name value)
|
|
|
1850 value))
|
|
|
1851 :value-to-external (lambda (widget value)
|
|
|
1852 (if (stringp value)
|
|
|
1853 (intern value)
|
|
|
1854 value)))
|
|
|
1855
|
|
|
1856 (define-widget 'function 'sexp
|
|
|
1857 ;; Should complete on functions.
|
|
|
1858 "A lisp function."
|
|
|
1859 :tag "Function")
|
|
|
1860
|
|
|
1861 (define-widget 'variable 'symbol
|
|
|
1862 ;; Should complete on variables.
|
|
|
1863 "A lisp variable."
|
|
|
1864 :tag "Variable")
|
|
70
|
1865
|
|
|
1866 (define-widget 'sexp 'string
|
|
80
|
1867 "An arbitrary lisp expression."
|
|
|
1868 :tag "Lisp expression"
|
|
|
1869 :value nil
|
|
70
|
1870 :validate 'widget-sexp-validate
|
|
80
|
1871 :match (lambda (widget value) t)
|
|
|
1872 :value-to-internal 'widget-sexp-value-to-internal
|
|
70
|
1873 :value-to-external (lambda (widget value) (read value)))
|
|
|
1874
|
|
80
|
1875 (defun widget-sexp-value-to-internal (widget value)
|
|
|
1876 ;; Use pp for printer representation.
|
|
|
1877 (let ((pp (pp-to-string value)))
|
|
|
1878 (while (string-match "\n\\'" pp)
|
|
|
1879 (setq pp (substring pp 0 -1)))
|
|
|
1880 (if (or (string-match "\n\\'" pp)
|
|
|
1881 (> (length pp) 40))
|
|
|
1882 (concat "\n" pp)
|
|
|
1883 pp)))
|
|
|
1884
|
|
70
|
1885 (defun widget-sexp-validate (widget)
|
|
|
1886 ;; Valid if we can read the string and there is no junk left after it.
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|
|
1887 (save-excursion
|
|
80
|
1888 (let ((buffer (set-buffer (get-buffer-create " *Widget Scratch*"))))
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|
|
1889 (erase-buffer)
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|
|
1890 (insert (widget-apply widget :value-get))
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|
|
1891 (goto-char (point-min))
|
|
|
1892 (condition-case data
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|
|
1893 (let ((value (read buffer)))
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|
|
1894 (if (eobp)
|
|
|
1895 (if (widget-apply widget :match value)
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|
|
1896 nil
|
|
|
1897 (widget-put widget :error (widget-get widget :type-error))
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|
|
1898 widget)
|
|
|
1899 (widget-put widget
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|
|
1900 :error (format "Junk at end of expression: %s"
|
|
|
1901 (buffer-substring (point)
|
|
|
1902 (point-max))))
|
|
|
1903 widget))
|
|
|
1904 (error (widget-put widget :error (error-message-string data))
|
|
|
1905 widget)))))
|
|
70
|
1906
|
|
|
1907 (define-widget 'integer 'sexp
|
|
80
|
1908 "An integer."
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|
|
1909 :tag "Integer"
|
|
|
1910 :value 0
|
|
70
|
1911 :type-error "This field should contain an integer"
|
|
80
|
1912 :value-to-internal (lambda (widget value)
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|
|
1913 (if (integerp value)
|
|
|
1914 (prin1-to-string value)
|
|
|
1915 value))
|
|
|
1916 :match (lambda (widget value) (integerp value)))
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|
|
1917
|
|
|
1918 (define-widget 'character 'string
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|
|
1919 "An character."
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|
|
1920 :tag "Character"
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|
|
1921 :value 0
|
|
|
1922 :size 1
|
|
86
|
1923 :format "%{%t%}: %v\n"
|
|
80
|
1924 :type-error "This field should contain a character"
|
|
|
1925 :value-to-internal (lambda (widget value)
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|
|
1926 (if (integerp value)
|
|
|
1927 (char-to-string value)
|
|
|
1928 value))
|
|
|
1929 :value-to-external (lambda (widget value)
|
|
|
1930 (if (stringp value)
|
|
|
1931 (aref value 0)
|
|
|
1932 value))
|
|
70
|
1933 :match (lambda (widget value) (integerp value)))
|
|
|
1934
|
|
|
1935 (define-widget 'number 'sexp
|
|
80
|
1936 "A floating point number."
|
|
|
1937 :tag "Number"
|
|
|
1938 :value 0.0
|
|
70
|
1939 :type-error "This field should contain a number"
|
|
80
|
1940 :value-to-internal (lambda (widget value)
|
|
|
1941 (if (numberp value)
|
|
|
1942 (prin1-to-string value)
|
|
|
1943 value))
|
|
70
|
1944 :match (lambda (widget value) (numberp value)))
|
|
|
1945
|
|
|
1946 (define-widget 'list 'group
|
|
80
|
1947 "A lisp list."
|
|
|
1948 :tag "List"
|
|
86
|
1949 :format "%{%t%}:\n%v")
|
|
70
|
1950
|
|
|
1951 (define-widget 'vector 'group
|
|
80
|
1952 "A lisp vector."
|
|
|
1953 :tag "Vector"
|
|
86
|
1954 :format "%{%t%}:\n%v"
|
|
70
|
1955 :match 'widget-vector-match
|
|
|
1956 :value-to-internal (lambda (widget value) (append value nil))
|
|
|
1957 :value-to-external (lambda (widget value) (apply 'vector value)))
|
|
|
1958
|
|
|
1959 (defun widget-vector-match (widget value)
|
|
|
1960 (and (vectorp value)
|
|
|
1961 (widget-group-match widget
|
|
|
1962 (widget-apply :value-to-internal widget value))))
|
|
|
1963
|
|
|
1964 (define-widget 'cons 'group
|
|
80
|
1965 "A cons-cell."
|
|
|
1966 :tag "Cons-cell"
|
|
86
|
1967 :format "%{%t%}:\n%v"
|
|
70
|
1968 :match 'widget-cons-match
|
|
|
1969 :value-to-internal (lambda (widget value)
|
|
|
1970 (list (car value) (cdr value)))
|
|
|
1971 :value-to-external (lambda (widget value)
|
|
|
1972 (cons (nth 0 value) (nth 1 value))))
|
|
|
1973
|
|
|
1974 (defun widget-cons-match (widget value)
|
|
|
1975 (and (consp value)
|
|
|
1976 (widget-group-match widget
|
|
80
|
1977 (widget-apply widget :value-to-internal value))))
|
|
|
1978
|
|
|
1979 (define-widget 'choice 'menu-choice
|
|
|
1980 "A union of several sexp types."
|
|
|
1981 :tag "Choice"
|
|
|
1982 :format "%[%t%]: %v")
|
|
|
1983
|
|
|
1984 (define-widget 'radio 'radio-button-choice
|
|
|
1985 "A union of several sexp types."
|
|
|
1986 :tag "Choice"
|
|
86
|
1987 :format "%{%t%}:\n%v")
|
|
80
|
1988
|
|
|
1989 (define-widget 'repeat 'editable-list
|
|
|
1990 "A variable length homogeneous list."
|
|
|
1991 :tag "Repeat"
|
|
86
|
1992 :format "%{%t%}:\n%v%i\n")
|
|
80
|
1993
|
|
|
1994 (define-widget 'set 'checklist
|
|
|
1995 "A list of members from a fixed set."
|
|
|
1996 :tag "Set"
|
|
86
|
1997 :format "%{%t%}:\n%v")
|
|
80
|
1998
|
|
|
1999 (define-widget 'boolean 'toggle
|
|
|
2000 "To be nil or non-nil, that is the question."
|
|
|
2001 :tag "Boolean"
|
|
86
|
2002 :format "%{%t%}: %v")
|
|
80
|
2003
|
|
|
2004 ;;; The `color' Widget.
|
|
|
2005
|
|
|
2006 (define-widget 'color-item 'choice-item
|
|
|
2007 "A color name (with sample)."
|
|
|
2008 :format "%v (%[sample%])\n"
|
|
|
2009 :button-face-get 'widget-color-item-button-face-get)
|
|
|
2010
|
|
|
2011 (defun widget-color-item-button-face-get (widget)
|
|
|
2012 ;; We create a face from the value.
|
|
|
2013 (require 'facemenu)
|
|
|
2014 (condition-case nil
|
|
|
2015 (facemenu-get-face (intern (concat "fg:" (widget-value widget))))
|
|
|
2016 (error 'default)))
|
|
|
2017
|
|
|
2018 (define-widget 'color 'push-button
|
|
|
2019 "Choose a color name (with sample)."
|
|
|
2020 :format "%[%t%]: %v"
|
|
|
2021 :tag "Color"
|
|
|
2022 :value "default"
|
|
|
2023 :value-create 'widget-color-value-create
|
|
|
2024 :value-delete 'widget-children-value-delete
|
|
|
2025 :value-get 'widget-color-value-get
|
|
|
2026 :value-set 'widget-color-value-set
|
|
|
2027 :action 'widget-color-action
|
|
|
2028 :match 'widget-field-match
|
|
|
2029 :tag "Color")
|
|
|
2030
|
|
|
2031 (defvar widget-color-choice-list nil)
|
|
|
2032 ;; Variable holding the possible colors.
|
|
|
2033
|
|
|
2034 (defun widget-color-choice-list ()
|
|
|
2035 (unless widget-color-choice-list
|
|
|
2036 (setq widget-color-choice-list
|
|
|
2037 (mapcar '(lambda (color) (list color))
|
|
|
2038 (x-defined-colors))))
|
|
|
2039 widget-color-choice-list)
|
|
|
2040
|
|
|
2041 (defun widget-color-value-create (widget)
|
|
|
2042 (let ((child (widget-create-child-and-convert
|
|
|
2043 widget 'color-item (widget-get widget :value))))
|
|
|
2044 (widget-put widget :children (list child))))
|
|
|
2045
|
|
|
2046 (defun widget-color-value-get (widget)
|
|
|
2047 ;; Pass command to first child.
|
|
|
2048 (widget-apply (car (widget-get widget :children)) :value-get))
|
|
|
2049
|
|
|
2050 (defun widget-color-value-set (widget value)
|
|
|
2051 ;; Pass command to first child.
|
|
|
2052 (widget-apply (car (widget-get widget :children)) :value-set value))
|
|
|
2053
|
|
|
2054 (defvar widget-color-history nil
|
|
|
2055 "History of entered colors")
|
|
|
2056
|
|
|
2057 (defun widget-color-action (widget &optional event)
|
|
|
2058 ;; Prompt for a color.
|
|
|
2059 (let* ((tag (widget-apply widget :menu-tag-get))
|
|
|
2060 (prompt (concat tag ": "))
|
|
|
2061 (answer (cond ((string-match "XEmacs" emacs-version)
|
|
|
2062 (read-color prompt))
|
|
|
2063 ((fboundp 'x-defined-colors)
|
|
|
2064 (completing-read (concat tag ": ")
|
|
|
2065 (widget-color-choice-list)
|
|
|
2066 nil nil nil 'widget-color-history))
|
|
|
2067 (t
|
|
|
2068 (read-string prompt (widget-value widget))))))
|
|
|
2069 (unless (zerop (length answer))
|
|
|
2070 (widget-value-set widget answer)
|
|
|
2071 (widget-apply widget :notify widget event)
|
|
|
2072 (widget-setup))))
|
|
|
2073
|
|
|
2074 ;;; The Help Echo
|
|
|
2075
|
|
|
2076 (defun widget-echo-help-mouse ()
|
|
|
2077 "Display the help message for the widget under the mouse.
|
|
|
2078 Enable with (run-with-idle-timer 1 t 'widget-echo-help-mouse)"
|
|
|
2079 (let* ((pos (mouse-position))
|
|
|
2080 (frame (car pos))
|
|
|
2081 (x (car (cdr pos)))
|
|
|
2082 (y (cdr (cdr pos)))
|
|
|
2083 (win (window-at x y frame))
|
|
|
2084 (where (coordinates-in-window-p (cons x y) win)))
|
|
|
2085 (when (consp where)
|
|
|
2086 (save-window-excursion
|
|
|
2087 (progn ; save-excursion
|
|
|
2088 (select-window win)
|
|
|
2089 (let* ((result (compute-motion (window-start win)
|
|
|
2090 '(0 . 0)
|
|
|
2091 (window-end win)
|
|
|
2092 where
|
|
|
2093 (window-width win)
|
|
|
2094 (cons (window-hscroll) 0)
|
|
|
2095 win)))
|
|
|
2096 (when (and (eq (nth 1 result) x)
|
|
|
2097 (eq (nth 2 result) y))
|
|
|
2098 (widget-echo-help (nth 0 result))))))))
|
|
|
2099 (unless track-mouse
|
|
|
2100 (setq track-mouse t)
|
|
|
2101 (add-hook 'post-command-hook 'widget-stop-mouse-tracking)))
|
|
|
2102
|
|
|
2103 (defun widget-stop-mouse-tracking (&rest args)
|
|
|
2104 "Stop the mouse tracking done while idle."
|
|
|
2105 (remove-hook 'post-command-hook 'widget-stop-mouse-tracking)
|
|
|
2106 (setq track-mouse nil))
|
|
|
2107
|
|
|
2108 (defun widget-at (pos)
|
|
|
2109 "The button or field at POS."
|
|
|
2110 (or (get-text-property pos 'button)
|
|
|
2111 (get-text-property pos 'field)))
|
|
|
2112
|
|
|
2113 (defun widget-echo-help (pos)
|
|
|
2114 "Display the help echo for widget at POS."
|
|
|
2115 (let* ((widget (widget-at pos))
|
|
|
2116 (help-echo (and widget (widget-get widget :help-echo))))
|
|
|
2117 (cond ((stringp help-echo)
|
|
|
2118 (message "%s" help-echo))
|
|
|
2119 ((and (symbolp help-echo) (fboundp help-echo)
|
|
|
2120 (stringp (setq help-echo (funcall help-echo widget))))
|
|
|
2121 (message "%s" help-echo)))))
|
|
70
|
2122
|
|
|
2123 ;;; The End:
|
|
|
2124
|
|
|
2125 (provide 'widget-edit)
|
|
|
2126
|
|
|
2127 ;; widget-edit.el ends here
|
