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0
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1 /* General GUI code -- X-specific. (menubars, scrollbars, toolbars, dialogs)
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2 Copyright (C) 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1995, 1996 Ben Wing.
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4 Copyright (C) 1995 Sun Microsystems, Inc.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Not in FSF. */
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24
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25 #include <config.h>
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26 #include "lisp.h"
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27
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28 #include "console-x.h"
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29 #ifdef LWLIB_USES_MOTIF
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30 #include <Xm/Xm.h> /* for XmVersion */
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31 #endif
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32 #include "gui-x.h"
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33 #include "buffer.h"
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34 #include "device.h"
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35 #include "frame.h"
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36 #include "opaque.h"
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37
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38 #ifdef HAVE_POPUPS
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39 /* count of menus/dboxes currently up */
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40 int popup_up_p;
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41
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42 Lisp_Object Qmenu_no_selection_hook;
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43 #endif
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44
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45 /* we need a unique id for each popup menu, dialog box, and scrollbar */
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46 static unsigned int lwlib_id_tick;
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47
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48 LWLIB_ID new_lwlib_id (void);
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49 LWLIB_ID
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50 new_lwlib_id (void)
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51 {
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52 return ++lwlib_id_tick;
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53 }
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54
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55 widget_value *
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56 xmalloc_widget_value (void)
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57 {
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58 widget_value *tmp = malloc_widget_value ();
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59 if (!tmp) memory_full ();
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60 return tmp;
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61 }
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62
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63
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64 #ifdef HAVE_POPUPS
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65 static Lisp_Object mark_popup_data (Lisp_Object obj,
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66 void (*markobj) (Lisp_Object));
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67 DEFINE_LRECORD_IMPLEMENTATION ("popup-data", popup_data,
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68 mark_popup_data, internal_object_printer,
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69 0, 0, 0, struct popup_data);
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70
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71 struct mark_widget_value_closure
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72 {
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73 void (*markobj) (Lisp_Object);
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74 };
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75
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76 static int
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77 mark_widget_value_mapper (widget_value *val, void *closure)
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78 {
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79 Lisp_Object markee;
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80
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81 struct mark_widget_value_closure *cl =
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82 (struct mark_widget_value_closure *) closure;
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83 if (val->call_data)
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84 {
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85 VOID_TO_LISP (markee, val->call_data);
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86 (cl->markobj) (markee);
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87 }
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88
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89 return 0;
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90 }
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91
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92 static Lisp_Object
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93 mark_popup_data (Lisp_Object obj, void (*markobj) (Lisp_Object))
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94 {
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95 struct popup_data *data = (struct popup_data *) XPOPUP_DATA (obj);
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96
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97 /* Now mark the callbacks and such that are hidden in the lwlib
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98 call-data */
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99
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100 if (data->id)
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101 {
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102 struct mark_widget_value_closure closure;
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103
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104 closure.markobj = markobj;
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105 lw_map_widget_values (data->id, mark_widget_value_mapper, &closure);
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106 }
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107
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108 return (data->last_menubar_buffer);
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109 }
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110
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111 /* This is like FRAME_MENUBAR_DATA (f), but contains an alist of
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112 (id . popup-data) for GCPRO'ing the callbacks of the popup menus
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113 and dialog boxes. */
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114 static Lisp_Object Vpopup_callbacks;
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115
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116 void
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117 gcpro_popup_callbacks (LWLIB_ID id)
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118 {
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119 struct popup_data *pdata;
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120 Lisp_Object lid = make_int (id);
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121 Lisp_Object lpdata = Qnil;
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122
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123 assert (NILP (assq_no_quit (lid, Vpopup_callbacks)));
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124 pdata = alloc_lcrecord (sizeof (struct popup_data), lrecord_popup_data);
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125 pdata->id = id;
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126 pdata->last_menubar_buffer = Qnil;
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127 pdata->menubar_contents_up_to_date = 0;
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128 XSETPOPUP_DATA (lpdata, pdata);
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129 Vpopup_callbacks = Fcons (Fcons (lid, lpdata), Vpopup_callbacks);
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130 }
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131
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132 void
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133 ungcpro_popup_callbacks (LWLIB_ID id)
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134 {
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135 Lisp_Object lid = make_int (id);
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136 Lisp_Object this = assq_no_quit (lid, Vpopup_callbacks);
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137 assert (!NILP (this));
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138 Vpopup_callbacks = delq_no_quit (this, Vpopup_callbacks);
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139 }
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140
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141 int
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142 popup_handled_p (LWLIB_ID id)
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143 {
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144 return (NILP (assq_no_quit (make_int (id), Vpopup_callbacks)));
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145 }
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146
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147 /* menu_item_descriptor_to_widget_value() et al. mallocs a
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148 widget_value, but then may signal lisp errors. If an error does
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149 not occur, the opaque ptr we have here has had its pointer set to 0
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150 to tell us not to do anything. Otherwise we free the widget value.
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151 (This has nothing to do with GC, it's just about not dropping
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152 pointers to malloc'd data when errors happen.) */
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153
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154 Lisp_Object
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155 widget_value_unwind (Lisp_Object closure)
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156 {
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157 widget_value *wv = (widget_value *) get_opaque_ptr (closure);
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158 free_opaque_ptr (closure);
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159 if (wv)
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160 free_widget_value (wv);
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161 return Qnil;
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162 }
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163
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164 #if 0
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165 static void
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166 print_widget_value (widget_value *wv, int depth)
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167 {
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168 /* !!#### This function has not been Mule-ized */
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169 char d [200];
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170 int i;
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171 for (i = 0; i < depth; i++) d[i] = ' ';
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172 d[depth]=0;
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173 /* #### - print type field */
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174 printf ("%sname: %s\n", d, (wv->name ? wv->name : "(null)"));
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175 if (wv->value) printf ("%svalue: %s\n", d, wv->value);
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176 if (wv->key) printf ("%skey: %s\n", d, wv->key);
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177 printf ("%senabled: %d\n", d, wv->enabled);
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178 if (wv->contents)
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179 {
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180 printf ("\n%scontents: \n", d);
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181 print_widget_value (wv->contents, depth + 5);
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182 }
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183 if (wv->next)
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184 {
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185 printf ("\n");
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186 print_widget_value (wv->next, depth);
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187 }
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188 }
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189 #endif
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190
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191 /* This recursively calls free_widget_value() on the tree of widgets.
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192 It must free all data that was malloc'ed for these widget_values.
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193
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194 It used to be that emacs only allocated new storage for the `key' slot.
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195 All other slots are pointers into the data of Lisp_Strings, and must be
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196 left alone. */
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197 void
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198 free_popup_widget_value_tree (widget_value *wv)
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199 {
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200 if (! wv) return;
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201 if (wv->key) xfree (wv->key);
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202 if (wv->value) xfree (wv->value);
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203
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204 wv->name = wv->value = wv->key = (char *) 0xDEADBEEF;
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205
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206 if (wv->contents && (wv->contents != (widget_value*)1))
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207 {
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208 free_popup_widget_value_tree (wv->contents);
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209 wv->contents = (widget_value *) 0xDEADBEEF;
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210 }
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211 if (wv->next)
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212 {
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213 free_popup_widget_value_tree (wv->next);
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214 wv->next = (widget_value *) 0xDEADBEEF;
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215 }
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216 free_widget_value (wv);
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217 }
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218
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219 DEFUN ("popup-up-p", Fpopup_up_p, Spopup_up_p, 0, 0, 0 /*
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220 Return t if a popup menu or dialog box is up, nil otherwise.
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221 See `popup-menu' and `popup-dialog-box'.
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222 */ )
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223 ()
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224 {
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225 return popup_up_p ? Qt : Qnil;
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226 }
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227
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228 /* The following is actually called from somewhere within XtDispatchEvent(),
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229 called from XtAppProcessEvent() in event-Xt.c */
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230
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231 void
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232 popup_selection_callback (Widget widget, LWLIB_ID ignored_id,
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233 XtPointer client_data)
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234 {
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235 Lisp_Object fn, arg;
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236 Lisp_Object data;
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237 Lisp_Object frame = Qnil;
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238 struct device *d = get_device_from_display (XtDisplay (widget));
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239 struct frame *f = x_any_widget_or_parent_to_frame (d, widget);
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240
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241 if (!f)
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242 return;
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243 if (((EMACS_INT) client_data) == 0)
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244 return;
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245 VOID_TO_LISP (data, client_data);
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246 XSETFRAME (frame, f);
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247
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248 #if 0
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249 /* #### What the hell? I can't understand why this call is here,
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250 and doing it is really courting disaster in the new event
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251 model, since popup_selection_callback is called from
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252 within next_event_internal() and Faccept_process_output()
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253 itself calls next_event_internal(). --Ben */
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254
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255 /* Flush the X and process input */
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256 Faccept_process_output (Qnil, Qnil, Qnil);
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257 #endif
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258
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259 if (((EMACS_INT) client_data) == -1)
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260 {
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261 fn = Qrun_hooks;
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262 arg = Qmenu_no_selection_hook;
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263 }
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264 else if (SYMBOLP (data))
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265 {
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266 fn = Qcall_interactively;
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267 arg = data;
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268 }
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269 else if (CONSP (data))
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270 {
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271 fn = Qeval;
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272 arg = data;
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273 }
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274 else
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275 {
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276 fn = Qeval;
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277 arg = list3 (Qsignal,
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278 list2 (Qquote, Qerror),
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279 list2 (Qquote, list2 (build_translated_string
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280 ("illegal popup callback"),
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281 data)));
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282 }
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283
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284 /* This is the timestamp used for asserting focus so we need to get an
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285 up-to-date value event if no events has been dispatched to emacs
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286 */
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287 DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d);
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288 signal_special_Xt_user_event (frame, fn, arg);
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289 }
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290
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291 #if 1
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292 /* Eval the activep slot of the menu item */
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293 # define wv_set_evalable_slot(slot,form) \
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294 do { Lisp_Object _f_ = (form); \
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295 slot = (NILP (_f_) ? 0 : \
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296 EQ (_f_, Qt) ? 1 : \
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297 !NILP (Feval (_f_))); \
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298 } while (0)
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299 #else
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300 /* Treat the activep slot of the menu item as a boolean */
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301 # define wv_set_evalable_slot(slot,form) \
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302 slot = (!NILP ((form)))
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303 #endif
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304
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305 Boolean
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306 separator_string_p (CONST char *s)
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307 {
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308 CONST char *p;
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309 char first;
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310
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311 if (!s || s[0] == '\0')
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312 return False;
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313 first = s[0];
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314 if (first != '-' && first != '=')
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315 return False;
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316 for (p = s; *p == first; p++);
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317
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318 if (*p == '!' || *p == ':' || *p == '\0')
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319 return True;
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320 return False;
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321 }
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322
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323 char *
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324 menu_separator_style (CONST char *s)
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325 {
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326 CONST char *p;
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327 char first;
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328
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329 if (!s || s[0] == '\0')
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330 return NULL;
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331 first = s[0];
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332 if (first != '-' && first != '=')
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333 return NULL;
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334 for (p = s; *p == first; p++);
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335
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336 /* #### - cannot currently specify a separator tag "--!tag" and a
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337 separator style "--:style" at the same time. */
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338 /* #### - Also, the motif menubar code doesn't deal with the
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339 double etched style yet, so it's not good to get into the habit of
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340 using "===" in menubars to get double-etched lines */
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341 if (*p == '!' || *p == '\0')
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342 return ((first == '-')
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343 ? NULL /* single etched is the default */
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344 : xstrdup ("shadowDoubleEtchedIn"));
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345 else if (*p == ':')
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346 return xstrdup (p+1);
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347
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348 return NULL;
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349 }
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350
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351 /* This does the dirty work. gc_currently_forbidden is 1 when this is called.
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352 */
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353
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354 int
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355 button_item_to_widget_value (Lisp_Object desc, widget_value *wv,
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356 int allow_text_field_p, int no_keys_p)
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357 {
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358 /* !!#### This function has not been Mule-ized */
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359 /* This function cannot GC because gc_currently_forbidden is set when
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360 it's called */
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2
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361 Lisp_Object name = Qnil;
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362 Lisp_Object callback = Qnil;
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363 Lisp_Object suffix = Qnil;
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364 Lisp_Object active_p = Qt;
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365 Lisp_Object include_p = Qt;
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0
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366 Lisp_Object selected_p = Qnil;
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2
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367 Lisp_Object keys = Qnil;
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368 Lisp_Object style = Qnil;
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0
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369 Lisp_Object config_tag = Qnil;
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370 int length = vector_length (XVECTOR (desc));
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371 Lisp_Object *contents = vector_data (XVECTOR (desc));
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372 int plist_p;
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373 int selected_spec = 0, included_spec = 0;
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374
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375 if (length < 3)
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376 signal_simple_error ("button descriptors must be at least 3 long", desc);
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377
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378 /* length 3: [ "name" callback active-p ]
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379 length 4: [ "name" callback active-p suffix ]
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380 or [ "name" callback keyword value ]
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381 length 5+: [ "name" callback [ keyword value ]+ ]
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382 */
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383 plist_p = (length >= 5 || KEYWORDP (contents [2]));
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384
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385 if (!plist_p)
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386 /* the old way */
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387 {
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388 name = contents [0];
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389 callback = contents [1];
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390 active_p = contents [2];
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391 if (length == 4)
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392 suffix = contents [3];
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393 }
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394 else
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395 {
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396 /* the new way */
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397 int i;
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398 if (length & 1)
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399 signal_simple_error (
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400 "button descriptor has an odd number of keywords and values",
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401 desc);
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402
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403 name = contents [0];
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404 callback = contents [1];
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405 for (i = 2; i < length;)
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406 {
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407 Lisp_Object key = contents [i++];
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408 Lisp_Object val = contents [i++];
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409 if (!KEYWORDP (key))
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410 signal_simple_error_2 ("not a keyword", key, desc);
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|
|
411
|
|
2
|
412 if (EQ (key, Q_active)) active_p = val;
|
|
|
413 else if (EQ (key, Q_suffix)) suffix = val;
|
|
|
414 else if (EQ (key, Q_keys)) keys = val;
|
|
|
415 else if (EQ (key, Q_style)) style = val;
|
|
0
|
416 else if (EQ (key, Q_selected)) selected_p = val, selected_spec = 1;
|
|
2
|
417 else if (EQ (key, Q_included)) include_p = val, included_spec = 1;
|
|
0
|
418 else if (EQ (key, Q_config)) config_tag = val;
|
|
|
419 else if (EQ (key, Q_filter))
|
|
|
420 signal_simple_error(":filter keyword not permitted on leaf nodes", desc);
|
|
|
421 else
|
|
|
422 signal_simple_error_2 ("unknown menu item keyword", key, desc);
|
|
|
423 }
|
|
|
424 }
|
|
|
425
|
|
|
426 #ifdef HAVE_MENUBARS
|
|
|
427 if ((!NILP (config_tag) && NILP (Fmemq (config_tag, Vmenubar_configuration)))
|
|
|
428 || (included_spec && NILP (Feval (include_p))))
|
|
|
429 {
|
|
|
430 /* the include specification says to ignore this item. */
|
|
|
431 return 0;
|
|
|
432 }
|
|
16
|
433 #endif /* HAVE_MENUBARS */
|
|
0
|
434
|
|
|
435 CHECK_STRING (name);
|
|
14
|
436 wv->name = (char *) XSTRING_DATA (name);
|
|
0
|
437
|
|
|
438 if (!NILP (suffix))
|
|
|
439 {
|
|
|
440 CONST char *const_bogosity;
|
|
|
441 CHECK_STRING (suffix);
|
|
2
|
442 GET_C_STRING_FILENAME_DATA_ALLOCA (suffix, const_bogosity);
|
|
0
|
443 wv->value = (char *) const_bogosity;
|
|
|
444 wv->value = xstrdup (wv->value);
|
|
|
445 }
|
|
|
446
|
|
|
447 wv_set_evalable_slot (wv->enabled, active_p);
|
|
|
448 wv_set_evalable_slot (wv->selected, selected_p);
|
|
|
449
|
|
|
450 wv->call_data = LISP_TO_VOID (callback);
|
|
|
451
|
|
|
452 if (no_keys_p
|
|
|
453 #ifdef HAVE_MENUBARS
|
|
|
454 || !menubar_show_keybindings
|
|
|
455 #endif
|
|
|
456 )
|
|
|
457 wv->key = 0;
|
|
|
458 else if (!NILP (keys)) /* Use this string to generate key bindings */
|
|
|
459 {
|
|
|
460 CHECK_STRING (keys);
|
|
|
461 keys = Fsubstitute_command_keys (keys);
|
|
14
|
462 if (XSTRING_LENGTH (keys) > 0)
|
|
|
463 wv->key = xstrdup ((char *) XSTRING_DATA (keys));
|
|
0
|
464 else
|
|
|
465 wv->key = 0;
|
|
|
466 }
|
|
|
467 else if (SYMBOLP (callback)) /* Show the binding of this command. */
|
|
|
468 {
|
|
|
469 char buf [1024];
|
|
|
470 /* #### Warning, dependency here on current_buffer and point */
|
|
|
471 where_is_to_char (callback, buf);
|
|
|
472 if (buf [0])
|
|
|
473 wv->key = xstrdup (buf);
|
|
|
474 else
|
|
|
475 wv->key = 0;
|
|
|
476 }
|
|
|
477
|
|
|
478 CHECK_SYMBOL (style);
|
|
|
479 if (NILP (style))
|
|
|
480 {
|
|
|
481 /* If the callback is nil, treat this item like unselectable text.
|
|
|
482 This way, dashes will show up as a separator. */
|
|
|
483 if (!wv->enabled)
|
|
|
484 wv->type = BUTTON_TYPE;
|
|
|
485 if (separator_string_p (wv->name))
|
|
|
486 {
|
|
|
487 wv->type = SEPARATOR_TYPE;
|
|
|
488 wv->value = menu_separator_style (wv->name);
|
|
|
489 }
|
|
|
490 else
|
|
|
491 {
|
|
|
492 #if 0
|
|
|
493 /* #### - this is generally desirable for menubars, but it breaks
|
|
|
494 a package that uses dialog boxes and next_command_event magic
|
|
|
495 to use the callback slot in dialog buttons for data instead of
|
|
|
496 a real callback.
|
|
|
497
|
|
|
498 Code is data, right? The beauty of LISP abuse. --Stig */
|
|
|
499 if (NILP (callback))
|
|
|
500 wv->type = TEXT_TYPE;
|
|
|
501 else
|
|
|
502 #endif
|
|
|
503 wv->type = BUTTON_TYPE;
|
|
|
504 }
|
|
|
505 }
|
|
|
506 else if (EQ (style, Qbutton))
|
|
|
507 wv->type = BUTTON_TYPE;
|
|
|
508 else if (EQ (style, Qtoggle))
|
|
|
509 wv->type = TOGGLE_TYPE;
|
|
|
510 else if (EQ (style, Qradio))
|
|
|
511 wv->type = RADIO_TYPE;
|
|
|
512 else if (EQ (style, Qtext))
|
|
|
513 {
|
|
|
514 wv->type = TEXT_TYPE;
|
|
|
515 #if 0
|
|
|
516 wv->value = wv->name;
|
|
|
517 wv->name = "value";
|
|
|
518 #endif
|
|
|
519 }
|
|
|
520 else
|
|
|
521 signal_simple_error_2 ("unknown style", style, desc);
|
|
|
522
|
|
|
523 if (!allow_text_field_p && (wv->type == TEXT_TYPE))
|
|
|
524 signal_simple_error ("text field not allowed in this context", desc);
|
|
|
525
|
|
|
526 if (selected_spec && EQ (style, Qtext))
|
|
|
527 signal_simple_error (
|
|
|
528 ":selected only makes sense with :style toggle, radio or button",
|
|
|
529 desc);
|
|
|
530 return 1;
|
|
|
531 }
|
|
|
532
|
|
|
533 #endif /* HAVE_POPUPS */
|
|
|
534
|
|
|
535 /* This is a kludge to make sure emacs can only link against a version of
|
|
|
536 lwlib that was compiled in the right way. Emacs references symbols which
|
|
|
537 correspond to the way it thinks lwlib was compiled, and if lwlib wasn't
|
|
|
538 compiled in that way, then somewhat meaningful link errors will result.
|
|
|
539 The alternatives to this range from obscure link errors, to obscure
|
|
|
540 runtime errors that look a lot like bugs.
|
|
|
541 */
|
|
|
542
|
|
|
543 static void
|
|
|
544 sanity_check_lwlib (void)
|
|
|
545 {
|
|
|
546 #define MACROLET(v) { extern int v; v = 1; }
|
|
|
547
|
|
|
548 #if (XlibSpecificationRelease == 4)
|
|
|
549 MACROLET (lwlib_uses_x11r4);
|
|
|
550 #elif (XlibSpecificationRelease == 5)
|
|
|
551 MACROLET (lwlib_uses_x11r5);
|
|
|
552 #elif (XlibSpecificationRelease == 6)
|
|
|
553 MACROLET (lwlib_uses_x11r6);
|
|
|
554 #else
|
|
|
555 MACROLET (lwlib_uses_unknown_x11);
|
|
|
556 #endif
|
|
|
557 #ifdef LWLIB_USES_MOTIF
|
|
|
558 MACROLET (lwlib_uses_motif);
|
|
|
559 #else
|
|
|
560 MACROLET (lwlib_does_not_use_motif);
|
|
|
561 #endif
|
|
|
562 #if (XmVersion >= 1002)
|
|
|
563 MACROLET (lwlib_uses_motif_1_2);
|
|
|
564 #else
|
|
|
565 MACROLET (lwlib_does_not_use_motif_1_2);
|
|
|
566 #endif
|
|
|
567 #ifdef LWLIB_MENUBARS_LUCID
|
|
|
568 MACROLET (lwlib_menubars_lucid);
|
|
|
569 #elif defined (HAVE_MENUBARS)
|
|
|
570 MACROLET (lwlib_menubars_motif);
|
|
|
571 #endif
|
|
|
572 #ifdef LWLIB_SCROLLBARS_LUCID
|
|
|
573 MACROLET (lwlib_scrollbars_lucid);
|
|
|
574 #elif defined (LWLIB_SCROLLBARS_MOTIF)
|
|
|
575 MACROLET (lwlib_scrollbars_motif);
|
|
|
576 #elif defined (HAVE_SCROLLBARS)
|
|
|
577 MACROLET (lwlib_scrollbars_athena);
|
|
|
578 #endif
|
|
|
579 #ifdef LWLIB_DIALOGS_MOTIF
|
|
|
580 MACROLET (lwlib_dialogs_motif);
|
|
|
581 #elif defined (HAVE_DIALOGS)
|
|
|
582 MACROLET (lwlib_dialogs_athena);
|
|
|
583 #endif
|
|
|
584 #ifdef ENERGIZE
|
|
|
585 MACROLET (lwlib_uses_energize);
|
|
|
586 #else
|
|
|
587 MACROLET (lwlib_does_not_use_energize);
|
|
|
588 #endif
|
|
|
589
|
|
|
590 #undef MACROLET
|
|
|
591 }
|
|
|
592
|
|
|
593 void
|
|
|
594 syms_of_gui_x (void)
|
|
|
595 {
|
|
|
596 #ifdef HAVE_POPUPS
|
|
|
597 defsubr (&Spopup_up_p);
|
|
|
598 defsymbol (&Qmenu_no_selection_hook, "menu-no-selection-hook");
|
|
|
599 #endif
|
|
|
600 }
|
|
|
601
|
|
|
602 void
|
|
|
603 vars_of_gui_x (void)
|
|
|
604 {
|
|
|
605 lwlib_id_tick = (1<<16); /* start big, to not conflict with Energize */
|
|
|
606
|
|
|
607 #ifdef HAVE_POPUPS
|
|
|
608 popup_up_p = 0;
|
|
|
609
|
|
|
610 Vpopup_callbacks = Qnil;
|
|
|
611 staticpro (&Vpopup_callbacks);
|
|
|
612
|
|
|
613 #if 0
|
|
|
614 /* This DEFVAR_LISP is just for the benefit of make-docfile. */
|
|
|
615 /* #### misnamed */
|
|
|
616 DEFVAR_LISP ("menu-no-selection-hook", &Vmenu_no_selection_hook /*
|
|
|
617 Function or functions to call when a menu or dialog box is dismissed
|
|
|
618 without a selection having been made.
|
|
|
619 */ );
|
|
|
620 #endif
|
|
|
621 Fset (Qmenu_no_selection_hook, Qnil);
|
|
|
622 #endif /* HAVE_POPUPS */
|
|
|
623
|
|
|
624 /* this makes only safe calls as in emacs.c */
|
|
|
625 sanity_check_lwlib ();
|
|
|
626 }
|
