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1 ;;; w3-e19.el --- Emacs 19.xx specific functions for emacs-w3
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2 ;; Author: wmperry
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32
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3 ;; Created: 1997/03/12 20:07:18
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4 ;; Version: 1.19
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5 ;; Keywords: faces, help, mouse, hypermedia
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6
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7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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8 ;;; Copyright (c) 1993 - 1996 by William M. Perry (wmperry@cs.indiana.edu)
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9 ;;; Copyright (c) 1996, 1997 Free Software Foundation, Inc.
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10 ;;;
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11 ;;; This file is part of GNU Emacs.
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12 ;;;
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13 ;;; GNU Emacs is free software; you can redistribute it and/or modify
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14 ;;; it under the terms of the GNU General Public License as published by
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15 ;;; the Free Software Foundation; either version 2, or (at your option)
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16 ;;; any later version.
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17 ;;;
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18 ;;; GNU Emacs is distributed in the hope that it will be useful,
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19 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 ;;; GNU General Public License for more details.
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22 ;;;
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23 ;;; You should have received a copy of the GNU General Public License
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24 ;;; along with GNU Emacs; see the file COPYING. If not, write to the
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25 ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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26 ;;; Boston, MA 02111-1307, USA.
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27 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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28
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29 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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30 ;;; Enhancements For Emacs 19
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31 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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32 (require 'w3-forms)
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33 (require 'font)
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34 (require 'w3-script)
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35
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36 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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37 ;;; Help menu
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38 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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39 (defvar w3-e19-hotlist-menu nil "A menu for hotlists.")
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40 (defvar w3-e19-links-menu nil "A buffer-local menu for hyperlinks.")
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41 (defvar w3-e19-nav-menu nil "A buffer-local menu for html based <link> tags.")
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42 (mapcar 'make-variable-buffer-local
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43 '(w3-e19-hotlist-menu w3-e19-links-menu w3-e19-nav-menu))
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44
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45 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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46 ;;; Functions to build menus of urls
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47 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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48 (defun w3-e19-show-hotlist-menu ()
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49 (interactive)
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50 (let ((keymap (easy-menu-create-keymaps "Hotlist"
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51 (w3-menu-hotlist-constructor nil)))
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52 (x nil)
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53 (y nil))
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54 (setq x (x-popup-menu t keymap)
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55 y (and x (lookup-key keymap (apply 'vector x))))
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56 (if (and x y)
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57 (funcall y))))
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58
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59 (defun w3-e19-show-links-menu ()
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60 (interactive)
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61 (if (not w3-e19-links-menu)
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62 (w3-build-FSF19-menu))
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63 (let (x y)
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64 (setq x (x-popup-menu t w3-e19-links-menu)
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65 y (and x (lookup-key w3-e19-links-menu (apply 'vector x))))
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66 (if (and x y)
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67 (funcall y))))
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68
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69 (defun w3-e19-show-navigate-menu ()
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70 (interactive)
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71 (if (not w3-e19-nav-menu)
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72 (w3-build-FSF19-menu))
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73 (let (x y)
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74 (setq x (x-popup-menu t w3-e19-nav-menu)
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75 y (and x (lookup-key w3-e19-nav-menu (apply 'vector x))))
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76 (if (and x y)
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77 (funcall y))))
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78
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79 (defun w3-build-FSF19-menu ()
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80 ;; Build emacs19 menus from w3-links-list
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81 (let ((links (w3-menu-html-links-constructor nil))
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82 (hlink (w3-menu-links-constructor nil)))
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83 (setq w3-e19-nav-menu (easy-menu-create-keymaps "Navigate" links)
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84 w3-e19-links-menu (easy-menu-create-keymaps "Links" hlink))))
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85
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86 (defun w3-setup-version-specifics ()
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87 ;; Set up routine for emacs 19
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88 (require 'lmenu) ; for popup-menu
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89 )
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90
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91 (defun w3-store-in-clipboard (str)
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92 "Store string STR in the Xwindows clipboard"
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93 (cond
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94 ((memq (device-type) '(x pm))
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95 (x-select-text str))
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96 ((eq (device-type) 'ns)
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97 (ns-store-pasteboard-internal str))
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98 (t nil)))
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99
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100 (defun w3-e19-no-read-only (st nd)
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101 ;; Make sure we don't yank any read-only data out of this buffer
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102 (let ((inhibit-read-only t))
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103 (put-text-property st nd 'read-only nil)))
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104
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105 (defun w3-mode-version-specifics ()
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106 ;; Emacs 19 specific stuff for w3-mode
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107 (make-local-variable 'track-mouse)
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108 (set (make-local-variable 'buffer-access-fontify-functions) 'w3-e19-no-read-only)
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109 (if w3-track-mouse (setq track-mouse t)))
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110
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111 (defun w3-mouse-handler (e)
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112 "Function to message the url under the mouse cursor"
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113 (interactive "e")
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114 (let* ((pt (posn-point (event-start e)))
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115 (good (eq (posn-window (event-start e)) (selected-window)))
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116 (mouse-events nil))
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117 (if (not (and good pt (number-or-marker-p pt)))
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118 nil
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119 (widget-echo-help pt)
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120 ;; Need to handle onmouseover, on mouseout
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121 (setq mouse-events (w3-script-find-event-handlers pt 'mouse))
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122 (if (assq 'onmouseover mouse-events)
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123 (w3-script-evaluate-form (cdr (assq 'onmouseover mouse-events)))))))
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124
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125 (defun w3-color-values (color)
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126 (cond
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127 ((eq window-system 'x)
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128 (x-color-values color))
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129 ((eq window-system 'pm)
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130 (pm-color-values color))
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131 ((eq window-system 'ns)
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132 (ns-color-values color))
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133 (t nil)))
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134
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135 (defun w3-color-light-p (color-or-face)
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136 (let (colors)
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137 (cond
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138 ((null window-system)
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139 nil)
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140 ((facep color-or-face)
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141 (setq color-or-face (face-background color-or-face))
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142 (if (null color-or-face)
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143 (setq color-or-face (cdr-safe
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144 (assq 'background-color (frame-parameters)))))
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145 (setq colors (w3-color-values color-or-face)))
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146 ((stringp color-or-face)
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147 (setq colors (w3-color-values color-or-face)))
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148 ((font-rgb-color-p color-or-face)
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149 (setq colors (list (font-rgb-color-red color-or-face)
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150 (font-rgb-color-green color-or-face)
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151 (font-rgb-color-blue color-or-face))))
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152 (t
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153 (signal 'wrong-type-argument 'color-or-face-p)))
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154 (not (< (apply '+ colors)
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155 (/ (apply '+ (w3-color-values "white")) 3)))))
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156
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157
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158
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159 (provide 'w3-emacs19)
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160 (provide 'w3-e19)
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