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1 ;;;; psgml-xemacs.el --- Part of SGML-editing mode with parsing support
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2 ;; $Id: psgml-xemacs.el,v 1.1.1.2 1996/12/18 03:47:15 steve Exp $
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3
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4 ;; Copyright (C) 1994 Lennart Staflin
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5
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6 ;; Author: Lennart Staflin <lenst@lysator.liu.se>
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7 ;; William M. Perry <wmperry@indiana.edu>
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8 ;; Synced up with Ben Wing's changes for XEmacs 19.14 by
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9 ;; Steven L Baur <steve@miranova.com>
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10
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11 ;;
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12 ;; This program is free software; you can redistribute it and/or
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13 ;; modify it under the terms of the GNU General Public License
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14 ;; as published by the Free Software Foundation; either version 2
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15 ;; of the License, or (at your option) any later version.
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16 ;;
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17 ;; This program is distributed in the hope that it will be useful,
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18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 ;; GNU General Public License for more details.
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21 ;;
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with this program; if not, write to the Free Software
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24 ;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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25
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26
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27 ;;;; Commentary:
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28
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29 ;;; Part of psgml.el
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30
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31 ;;; Menus for use with XEmacs
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32
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33
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34 ;;;; Code:
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35
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36 (require 'psgml)
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37 ;;(require 'easymenu)
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38
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39 (eval-and-compile
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40 (autoload 'sgml-do-set-option "psgml-edit"))
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41
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42 (defvar sgml-max-menu-size (/ (* (frame-height) 2) 3)
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43 "*Max number of entries in Tags and Entities menus before they are split
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44 into several panes.")
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45
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46 ;;;; Pop Up Menus
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47
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48 (defun sgml-popup-menu (event title entries)
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49 "Display a popup menu."
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50 (setq entries
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51 (loop for ent in entries collect
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52 (vector (car ent)
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53 (list 'setq 'value (list 'quote (cdr ent)))
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54 t)))
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55 (cond ((> (length entries) sgml-max-menu-size)
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56 (setq entries
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57 (loop for i from 1 while entries collect
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58 (let ((submenu
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59 (subseq entries 0 (min (length entries)
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60 sgml-max-menu-size))))
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61 (setq entries (nthcdr sgml-max-menu-size
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62 entries))
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63 (cons
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64 (format "%s '%s'-'%s'"
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65 title
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66 (sgml-range-indicator (aref (car submenu) 0))
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67 (sgml-range-indicator
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68 (aref (car (last submenu)) 0)))
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69 submenu))))))
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70 (sgml-xemacs-get-popup-value (cons title entries)))
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71
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72
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73 (defun sgml-range-indicator (string)
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74 (substring string
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75 0
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76 (min (length string) sgml-range-indicator-max-length)))
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77
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78
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79 (defun sgml-xemacs-get-popup-value (menudesc)
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80 (let ((value nil)
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81 (event nil))
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82 (popup-menu menudesc)
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83 (while (popup-menu-up-p)
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84 (setq event (next-command-event event))
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85 (cond ((menu-event-p event)
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86 (cond
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87 ((eq (event-object event) 'abort)
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88 (signal 'quit nil))
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89 ((eq (event-object event) 'menu-no-selection-hook)
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90 nil)
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91 (t
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92 (eval (event-object event)))))
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93 ((button-release-event-p event) ; don't beep twice
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94 nil)
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95 ;; [sb] added condition
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96 ((and (fboundp 'event-matches-key-specifier-p)
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97 (event-matches-key-specifier-p event (quit-char)))
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98 (signal 'quit nil))
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99 (t
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100 (beep)
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101 (message "please make a choice from the menu."))))
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102 value))
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103
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104 (defun sgml-popup-multi-menu (pos title menudesc)
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105 "Display a popup menu.
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106 MENUS is a list of menus on the form (TITLE ITEM1 ITEM2 ...).
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107 ITEM should have to form (STRING EXPR) or STRING. The EXPR gets evaluated
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108 if the item is selected."
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109 (popup-menu
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110 (cons title
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111 (loop for menu in menudesc collect
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112 (cons (car menu) ; title
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113 (loop for item in (cdr menu) collect
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114 (if (stringp item)
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115 item
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116 (vector (car item) (cadr item) t))))))))
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117
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118
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119 ;;;; XEmacs menu bar
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120
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121 (defun sgml-make-options-menu (vars)
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122 (loop for var in vars
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123 for type = (sgml-variable-type var)
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124 for desc = (sgml-variable-description var)
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125 collect
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126 (cond
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127 ((eq type 'toggle)
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128 (vector desc (list 'setq var (list 'not var))
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129 ':style 'toggle ':selected var))
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130 ((consp type)
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131 (cons desc
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132 (loop for c in type collect
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133 (if (atom c)
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134 (vector (prin1-to-string c)
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135 (`(setq (, var) (, c)))
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136 :style 'toggle
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137 :selected (`(eq (, var) '(, c))))
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138 (vector (car c)
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139 (`(setq (, var) '(,(cdr c))))
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140 :style 'toggle
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141 :selected (`(eq (, var) '(,(cdr c)))))))))
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142 (t
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143 (vector desc
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144 (`(sgml-do-set-option '(, var)))
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145 t)))))
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146
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147
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148 (unless (or (not (boundp 'emacs-major-version))
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149 (and (boundp 'emacs-minor-version)
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150 (< emacs-minor-version 10)))
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151 (loop for ent on sgml-main-menu
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152 if (vectorp (car ent))
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153 do (cond
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154 ((equal (aref (car ent) 0) "File Options >")
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155 (setcar ent
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156 (cons "File Options"
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157 (sgml-make-options-menu sgml-file-options))))
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158 ((equal (aref (car ent) 0) "User Options >")
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159 (setcar ent
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160 (cons "User Options"
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161 (sgml-make-options-menu sgml-user-options)))))))
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162
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163
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164 ;;;; Key definitions
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165
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166 (define-key sgml-mode-map [button3] 'sgml-tags-menu)
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167
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168
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169 ;;;; Insert with properties
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170
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171 (defun sgml-insert (props format &rest args)
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172 (let ((start (point))
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173 tem)
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174 (insert (apply (function format)
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175 format
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176 args))
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177 (remf props 'rear-nonsticky) ; not useful in XEmacs
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178
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179 ;; Copy face prop from category
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180 (when (setq tem (getf props 'category))
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181 (when (setq tem (get tem 'face))
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182 (set-face-underline-p (make-face 'underline) t)
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183 (setf (getf props 'face) tem)))
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184
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185 (add-text-properties start (point) props)
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186
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187 ;; A read-only value of 1 is used for the text after values
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188 ;; and this should in XEmacs be open at the front.
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189 (if (eq 1 (getf props 'read-only))
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190 (set-extent-property
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191 (extent-at start nil 'read-only)
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192 'start-open t))))
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193
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194
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195 ;;;; Set face of markup
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196
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197 (defun sgml-set-face-for (start end type)
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198 (let ((face (cdr (assq type sgml-markup-faces)))
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199 o)
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200 (loop for e being the extents from start to end
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201 do (when (extent-property e 'sgml-type)
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202 (cond ((and (null o)
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203 (eq type (extent-property e 'sgml-type)))
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204 (setq o e))
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205 (t (delete-extent e)))))
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206
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207 (cond (o
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208 (set-extent-endpoints o start end))
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209 (face
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210 (setq o (make-extent start end))
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211 (set-extent-property o 'sgml-type type)
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212 (set-extent-property o 'face face)
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213 (set-extent-property o 'start-open t)
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214 (set-extent-face o face)))))
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215
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216 (defun sgml-set-face-after-change (start end &optional pre-len)
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2
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217 ;; This should not be needed with start-open t
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218 (when sgml-set-face
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219 (let ((o (extent-at start nil 'sgml-type)))
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220 (cond
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221 ((null o))
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222 ((= start (extent-start-position o))
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223 (set-extent-endpoints o end (extent-end-position o)))
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224 (t (delete-extent o))))))
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225
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226 ;(defalias 'next-overlay-at 'next-overlay-change) ; fix bug in cl.el
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227
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228 (defun sgml-clear-faces ()
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229 (interactive)
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230 (loop for o being the overlays
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231 if (extent-property o 'type)
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232 do (delete-extent o)))
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233
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234
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235 ;;;; Functions not in XEmacs
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236
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237 (unless (fboundp 'frame-width)
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238 (defalias 'frame-width 'screen-width))
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239
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240 (unless (fboundp 'frame-height)
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241 (defalias 'frame-height 'screen-height))
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242
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243 (unless (fboundp 'buffer-substring-no-properties)
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244 (defalias 'buffer-substring-no-properties 'buffer-substring))
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245
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246
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247 ;;;; Provide
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248
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249 (provide 'psgml-xemacs)
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250
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251
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252 ;;; psgml-xemacs.el ends here
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