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428
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1 /* A general interface to the widgets of different toolkits.
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2 Copyright (C) 1992, 1993, 1994 Lucid, Inc.
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3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
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4
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5 This file is part of the Lucid Widget Library.
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6
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7 The Lucid Widget Library is free software; you can redistribute it and/or
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8 modify it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2, or (at your option)
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10 any later version.
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11
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12 The Lucid Widget Library is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 #ifdef NeXT
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23 #undef __STRICT_BSD__ /* ick */
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24 #endif
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25
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26 #include <config.h>
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27 #include <stdio.h>
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28 #include <stdlib.h>
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29 #include <string.h>
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30 #include <sys/types.h>
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31 #ifdef HAVE_UNISTD_H
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32 #include <unistd.h>
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33 #endif
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34 #include <X11/StringDefs.h>
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35 #include "lwlib-internal.h"
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36 #include "lwlib-utils.h"
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37
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38 #ifdef NEED_LUCID
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39 #include "lwlib-Xlw.h"
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40 #endif
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41 #ifdef NEED_MOTIF
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42 #include "lwlib-Xm.h"
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434
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43 #ifdef LWLIB_WIDGETS_MOTIF
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44 #include <Xm/Xm.h>
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45 #endif
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428
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46 #endif
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47 #ifdef NEED_ATHENA
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48 #include "lwlib-Xaw.h"
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49 #endif
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50
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51 /* #### Does a check need to be put back in here to make sure we have
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52 sufficient defines to function properly or are the checks in the
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53 makefile sufficient? */
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54
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55 /* List of all widgets managed by the library. Note that each "widget"
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56 listed here may actually be a tree of widgets; for example, a
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57 single entry here might represent a single menubar or popup menu,
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58 each of which might be implemented with a tree of widgets.
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59 */
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60 static widget_info *all_widget_info = NULL;
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61
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62 /* boolean flag indicating that the menubar is active */
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63 int lw_menu_active = 0;
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64
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65 /* X11 menubar widget */
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66 Widget lw_menubar_widget = NULL;
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67
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68 /* whether the last menu operation was a keyboard accelerator */
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69 int lw_menu_accelerate = False;
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70
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71
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72 /* Forward declarations */
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434
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73 static void instantiate_widget_instance (widget_instance *instance);
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74 static void free_widget_value_args (widget_value* wv);
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428
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75
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76
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77 /* utility functions for widget_instance and widget_info */
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78 static char *
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79 safe_strdup (CONST char *s)
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80 {
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81 char *result;
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82 if (! s) return 0;
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83 result = (char *) malloc (strlen (s) + 1);
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84 if (! result)
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85 return 0;
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86 strcpy (result, s);
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87 return result;
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88 }
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89
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90 static void
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91 safe_free_str (char *s)
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92 {
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93 if (s) free (s);
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94 }
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95
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96 static widget_value *widget_value_free_list = 0;
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97
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98 widget_value *
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99 malloc_widget_value (void)
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100 {
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101 widget_value *wv;
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102 if (widget_value_free_list)
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103 {
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104 wv = widget_value_free_list;
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105 widget_value_free_list = wv->free_list;
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106 wv->free_list = 0;
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107 }
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108 else
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109 {
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110 wv = (widget_value *) malloc (sizeof (widget_value));
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111 }
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112 if (wv)
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113 {
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114 memset (wv, 0, sizeof (widget_value));
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115 }
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116 return wv;
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117 }
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118
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119 /* this is analogous to free(). It frees only what was allocated
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120 by malloc_widget_value(), and no substructures.
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121 */
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122 void
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123 free_widget_value (widget_value *wv)
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124 {
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125 if (wv->free_list)
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126 abort ();
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127 wv->free_list = widget_value_free_list;
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128 widget_value_free_list = wv;
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129 }
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130
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131 static void
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132 free_widget_value_contents (widget_value *wv)
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133 {
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134 if (wv->name) free (wv->name);
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135 if (wv->value) free (wv->value);
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136 if (wv->key) free (wv->key);
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137
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138 /* #### - all of this 0xDEADBEEF stuff should be unnecessary
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139 in production code... it should be conditionalized. */
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140 wv->name = wv->value = wv->key = (char *) 0xDEADBEEF;
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141
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142 if (wv->toolkit_data && wv->free_toolkit_data)
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143 {
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144 XtFree ((char *) wv->toolkit_data);
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145 wv->toolkit_data = (void *) 0xDEADBEEF;
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146 }
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147 #ifdef NEED_SCROLLBARS
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148 if (wv->scrollbar_data)
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149 {
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150 free (wv->scrollbar_data);
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151 wv->scrollbar_data = NULL;
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152 }
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153 #endif
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154 if (wv->contents && (wv->contents != (widget_value*)1))
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155 {
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156 free_widget_value_tree (wv->contents);
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157 wv->contents = (widget_value *) 0xDEADBEEF;
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158 }
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434
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159
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160 free_widget_value_args (wv);
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161
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428
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162 if (wv->next)
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163 {
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164 free_widget_value_tree (wv->next);
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165 wv->next = (widget_value *) 0xDEADBEEF;
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166 }
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167 }
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168
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169 void
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170 free_widget_value_tree (widget_value *wv)
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171 {
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172 if (!wv)
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173 return;
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174
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175 free_widget_value_contents (wv);
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176 free_widget_value (wv);
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177 }
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178
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179 #ifdef NEED_SCROLLBARS
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180
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181 static void
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182 copy_scrollbar_values (widget_value *val, widget_value *copy)
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183 {
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184 if (!copy->scrollbar_data)
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185 copy->scrollbar_data =
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186 (scrollbar_values *) malloc (sizeof (scrollbar_values));
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187
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188 if (val->scrollbar_data)
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189 *copy->scrollbar_data = *val->scrollbar_data;
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190 else
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191 memset (copy->scrollbar_data, 0, sizeof (scrollbar_values));
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192 }
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193
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194 /*
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195 * Return true if old->scrollbar_data were not equivalent
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196 * to new->scrollbar_data.
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197 */
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198 static Boolean
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199 merge_scrollbar_values (widget_value *old, widget_value *new)
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200 {
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201 Boolean changed = False;
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202
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203 if (new->scrollbar_data && !old->scrollbar_data)
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204 {
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205 copy_scrollbar_values (new, old);
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206 changed = True;
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207 }
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208 else if (!new->scrollbar_data && old->scrollbar_data)
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209 {
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210 free (old->scrollbar_data);
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211 old->scrollbar_data = NULL;
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212 }
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213 else if (new->scrollbar_data && old->scrollbar_data)
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214 {
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215 scrollbar_values *old_sb = old->scrollbar_data;
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216 scrollbar_values *new_sb = new->scrollbar_data;
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217
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218 if ((old_sb->line_increment != new_sb->line_increment) ||
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219 (old_sb->page_increment != new_sb->page_increment) ||
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220 (old_sb->minimum != new_sb->minimum) ||
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221 (old_sb->maximum != new_sb->maximum) ||
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222 (old_sb->slider_size != new_sb->slider_size) ||
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223 (old_sb->slider_position != new_sb->slider_position) ||
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224 (old_sb->scrollbar_width != new_sb->scrollbar_width) ||
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225 (old_sb->scrollbar_height != new_sb->scrollbar_height) ||
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226 (old_sb->scrollbar_x != new_sb->scrollbar_x) ||
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227 (old_sb->scrollbar_y != new_sb->scrollbar_y))
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228 changed = True;
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229
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230 *old_sb = *new_sb;
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231 }
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232
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233 return changed;
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234 }
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235
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236 #endif /* NEED_SCROLLBARS */
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237
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434
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238 #ifdef HAVE_WIDGETS
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239 /*
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240 * Return true if old->args was not equivalent
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241 * to new->args.
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242 */
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243 static Boolean
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244 merge_widget_value_args (widget_value *old, widget_value *new)
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245 {
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246 Boolean changed = False;
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247
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248 if (new->args && !old->args)
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249 {
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250 lw_copy_widget_value_args (new, old);
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251 changed = True;
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252 }
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253 /* Generally we don't want to lose values that are already in the
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254 widget. */
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255 else if (!new->args && old->args)
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256 {
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257 lw_copy_widget_value_args (old, new);
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258 changed = True;
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259 }
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260 else if (new->args && old->args)
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261 {
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262 /* #### Do something more sensible here than just copying the
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263 new values (like actually merging the values). */
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264 free_widget_value_args (old);
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265 lw_copy_widget_value_args (new, old);
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266 changed = True;
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267 }
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268
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269 return changed;
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270 }
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271 #endif /* HAVE_WIDGETS */
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272
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428
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273 /* Make a complete copy of a widget_value tree. Store CHANGE into
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274 the widget_value tree's `change' field. */
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275
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276 static widget_value *
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277 copy_widget_value_tree (widget_value *val, change_type change)
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278 {
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279 widget_value *copy;
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280
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281 if (!val)
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282 return NULL;
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283 if (val == (widget_value *) 1)
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284 return val;
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285
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286 copy = malloc_widget_value ();
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287 if (copy)
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288 {
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289 /* #### - don't seg fault *here* if out of memory. Menus will be
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290 truncated inexplicably. */
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291 copy->type = val->type;
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292 copy->name = safe_strdup (val->name);
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293 copy->value = safe_strdup (val->value);
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294 copy->key = safe_strdup (val->key);
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295 copy->accel = val->accel;
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296 copy->enabled = val->enabled;
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297 copy->selected = val->selected;
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298 copy->edited = False;
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299 copy->change = change;
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300 copy->contents = copy_widget_value_tree (val->contents, change);
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301 copy->call_data = val->call_data;
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302 copy->next = copy_widget_value_tree (val->next, change);
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303 copy->toolkit_data = NULL;
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304 copy->free_toolkit_data = False;
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434
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305
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306 lw_copy_widget_value_args (val, copy);
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428
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307 #ifdef NEED_SCROLLBARS
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308 copy_scrollbar_values (val, copy);
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309 #endif
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310 }
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311 return copy;
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312 }
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313
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314 /* This function is used to implement incremental menu construction. */
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315
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316 widget_value *
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317 replace_widget_value_tree (widget_value *node, widget_value *newtree)
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318 {
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319 widget_value *copy;
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320
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321 if (!node || !newtree)
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322 abort ();
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323
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324 copy = copy_widget_value_tree (newtree, STRUCTURAL_CHANGE);
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325
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326 free_widget_value_contents (node);
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327 *node = *copy;
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328 free_widget_value (copy); /* free the node, but not its contents. */
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329 return node;
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330 }
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331
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332 static widget_info *
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333 allocate_widget_info (CONST char *type, CONST char *name,
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334 LWLIB_ID id, widget_value *val,
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335 lw_callback pre_activate_cb, lw_callback selection_cb,
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336 lw_callback post_activate_cb)
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337 {
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338 widget_info *info = (widget_info *) malloc (sizeof (widget_info));
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339 info->type = safe_strdup (type);
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340 info->name = safe_strdup (name);
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341 info->id = id;
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342 info->val = copy_widget_value_tree (val, STRUCTURAL_CHANGE);
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343 info->busy = False;
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344 info->pre_activate_cb = pre_activate_cb;
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345 info->selection_cb = selection_cb;
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346 info->post_activate_cb = post_activate_cb;
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347 info->instances = NULL;
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348
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349 info->next = all_widget_info;
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350 all_widget_info = info;
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351
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352 return info;
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353 }
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354
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355 static void
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356 free_widget_info (widget_info *info)
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357 {
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358 safe_free_str (info->type);
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359 safe_free_str (info->name);
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360 free_widget_value_tree (info->val);
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361 memset ((void*)info, 0xDEADBEEF, sizeof (widget_info));
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362 free (info);
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363 }
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364
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365 static void
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366 mark_widget_destroyed (Widget widget, XtPointer closure, XtPointer call_data)
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367 {
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368 widget_instance *instance = (widget_instance*)closure;
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369
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370 /* be very conservative */
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371 if (instance->widget == widget)
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372 instance->widget = NULL;
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373 }
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374
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375 static widget_instance *
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376 allocate_widget_instance (widget_info *info, Widget parent, Boolean pop_up_p)
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377 {
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378 widget_instance *instance =
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379 (widget_instance *) malloc (sizeof (widget_instance));
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380 instance->parent = parent;
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381 instance->pop_up_p = pop_up_p;
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382 instance->info = info;
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383 instance->next = info->instances;
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384 info->instances = instance;
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385
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386 instantiate_widget_instance (instance);
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387
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388 XtAddCallback (instance->widget, XtNdestroyCallback,
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389 mark_widget_destroyed, (XtPointer)instance);
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|
390 return instance;
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391 }
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392
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|
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393 static void
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|
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394 free_widget_instance (widget_instance *instance)
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|
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395 {
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396 memset ((void *) instance, 0xDEADBEEF, sizeof (widget_instance));
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|
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397 free (instance);
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|
398 }
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399
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|
|
400 static widget_info *
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|
|
401 get_widget_info (LWLIB_ID id, Boolean remove_p)
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|
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402 {
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403 widget_info *info;
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|
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404 widget_info *prev;
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405 for (prev = NULL, info = all_widget_info;
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406 info;
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|
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407 prev = info, info = info->next)
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|
|
408 if (info->id == id)
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|
|
409 {
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|
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410 if (remove_p)
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|
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411 {
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|
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412 if (prev)
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|
|
413 prev->next = info->next;
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|
|
414 else
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|
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415 all_widget_info = info->next;
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|
|
416 }
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|
417 return info;
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|
|
418 }
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|
|
419 return NULL;
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|
|
420 }
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|
|
421
|
|
|
422 /* Internal function used by the library dependent implementation to get the
|
|
|
423 widget_value for a given widget in an instance */
|
|
|
424 widget_info *
|
|
|
425 lw_get_widget_info (LWLIB_ID id)
|
|
|
426 {
|
|
|
427 return get_widget_info (id, 0);
|
|
|
428 }
|
|
|
429
|
|
|
430 static int
|
|
|
431 map_widget_values (widget_value *value, int (*mapfunc) (widget_value *value,
|
|
|
432 void *closure),
|
|
|
433 void *closure)
|
|
|
434 {
|
|
|
435 int retval = 0;
|
|
|
436
|
|
|
437 if (value->contents)
|
|
|
438 retval = map_widget_values (value->contents, mapfunc, closure);
|
|
|
439 if (retval)
|
|
|
440 return retval;
|
|
|
441
|
|
|
442 if (value->next)
|
|
|
443 retval = map_widget_values (value->next, mapfunc, closure);
|
|
|
444 if (retval)
|
|
|
445 return retval;
|
|
|
446
|
|
|
447 return (mapfunc) (value, closure);
|
|
|
448 }
|
|
|
449
|
|
|
450 int
|
|
|
451 lw_map_widget_values (LWLIB_ID id, int (*mapfunc) (widget_value *value,
|
|
|
452 void *closure),
|
|
|
453 void *closure)
|
|
|
454 {
|
|
|
455 widget_info *info = get_widget_info (id, 0);
|
|
|
456
|
|
|
457 if (!info)
|
|
|
458 abort ();
|
|
|
459
|
|
|
460 if (info->val)
|
|
|
461 return map_widget_values (info->val, mapfunc, closure);
|
|
|
462 return 0;
|
|
|
463 }
|
|
|
464
|
|
|
465 static widget_instance *
|
|
|
466 get_widget_instance (Widget widget, Boolean remove_p)
|
|
|
467 {
|
|
|
468 widget_info *info;
|
|
|
469 widget_instance *instance;
|
|
|
470 widget_instance *prev;
|
|
|
471 for (info = all_widget_info; info; info = info->next)
|
|
|
472 for (prev = NULL, instance = info->instances;
|
|
|
473 instance;
|
|
|
474 prev = instance, instance = instance->next)
|
|
|
475 if (instance->widget == widget)
|
|
|
476 {
|
|
|
477 if (remove_p)
|
|
|
478 {
|
|
|
479 if (prev)
|
|
|
480 prev->next = instance->next;
|
|
|
481 else
|
|
|
482 info->instances = instance->next;
|
|
|
483 }
|
|
|
484 return instance;
|
|
|
485 }
|
|
|
486 return (widget_instance *) 0;
|
|
|
487 }
|
|
|
488
|
|
|
489 static widget_instance*
|
|
|
490 find_instance (LWLIB_ID id, Widget parent, Boolean pop_up_p)
|
|
|
491 {
|
|
|
492 widget_info *info = get_widget_info (id, False);
|
|
|
493 widget_instance *instance;
|
|
|
494
|
|
|
495 if (info)
|
|
|
496 for (instance = info->instances; instance; instance = instance->next)
|
|
|
497 if (instance->parent == parent && instance->pop_up_p == pop_up_p)
|
|
|
498 return instance;
|
|
|
499
|
|
|
500 return NULL;
|
|
|
501 }
|
|
|
502
|
|
|
503
|
|
|
504 /* utility function for widget_value */
|
|
|
505 static Boolean
|
|
|
506 safe_strcmp (CONST char *s1, CONST char *s2)
|
|
|
507 {
|
|
|
508 if (!!s1 ^ !!s2) return True;
|
|
|
509 return (s1 && s2) ? strcmp (s1, s2) : s1 ? False : !!s2;
|
|
|
510 }
|
|
|
511
|
|
|
512 #ifndef WINDOWSNT
|
|
|
513 static change_type
|
|
|
514 max (change_type i1, change_type i2)
|
|
|
515 {
|
|
|
516 return (int)i1 > (int)i2 ? i1 : i2;
|
|
|
517 }
|
|
|
518 #endif
|
|
|
519
|
|
|
520
|
|
|
521 #if 0
|
|
|
522 # define EXPLAIN(name, oc, nc, desc, a1, a2) \
|
|
|
523 printf ("Change: \"%s\"\tmax(%s=%d,%s=%d)\t%s %d %d\n", \
|
|
|
524 name, \
|
|
|
525 (oc == NO_CHANGE ? "none" : \
|
|
|
526 (oc == INVISIBLE_CHANGE ? "invisible" : \
|
|
|
527 (oc == VISIBLE_CHANGE ? "visible" : \
|
|
|
528 (oc == STRUCTURAL_CHANGE ? "structural" : "???")))), \
|
|
|
529 oc, \
|
|
|
530 (nc == NO_CHANGE ? "none" : \
|
|
|
531 (nc == INVISIBLE_CHANGE ? "invisible" : \
|
|
|
532 (nc == VISIBLE_CHANGE ? "visible" : \
|
|
|
533 (nc == STRUCTURAL_CHANGE ? "structural" : "???")))), \
|
|
|
534 nc, desc, a1, a2)
|
|
|
535 #else
|
|
|
536 # define EXPLAIN(name, oc, nc, desc, a1, a2)
|
|
|
537 #endif
|
|
|
538
|
|
|
539
|
|
|
540 static widget_value *
|
|
|
541 merge_widget_value (widget_value *val1, widget_value *val2, int level)
|
|
|
542 {
|
|
|
543 change_type change;
|
|
|
544 widget_value *merged_next;
|
|
|
545 widget_value *merged_contents;
|
|
|
546
|
|
|
547 if (!val1)
|
|
|
548 {
|
|
|
549 if (val2)
|
|
|
550 return copy_widget_value_tree (val2, STRUCTURAL_CHANGE);
|
|
|
551 else
|
|
|
552 return NULL;
|
|
|
553 }
|
|
|
554 if (!val2)
|
|
|
555 {
|
|
|
556 free_widget_value_tree (val1);
|
|
|
557 return NULL;
|
|
|
558 }
|
|
|
559
|
|
|
560 change = NO_CHANGE;
|
|
|
561
|
|
|
562 if (val1->type != val2->type)
|
|
|
563 {
|
|
|
564 EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "type change",
|
|
|
565 val1->type, val2->type);
|
|
|
566 change = max (change, STRUCTURAL_CHANGE);
|
|
|
567 val1->type = val2->type;
|
|
|
568 }
|
|
|
569 if (safe_strcmp (val1->name, val2->name))
|
|
|
570 {
|
|
|
571 EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "name change",
|
|
|
572 val1->name, val2->name);
|
|
|
573 change = max (change, STRUCTURAL_CHANGE);
|
|
|
574 safe_free_str (val1->name);
|
|
|
575 val1->name = safe_strdup (val2->name);
|
|
|
576 }
|
|
|
577 if (safe_strcmp (val1->value, val2->value))
|
|
|
578 {
|
|
|
579 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "value change",
|
|
|
580 val1->value, val2->value);
|
|
|
581 change = max (change, VISIBLE_CHANGE);
|
|
|
582 safe_free_str (val1->value);
|
|
|
583 val1->value = safe_strdup (val2->value);
|
|
|
584 }
|
|
|
585 if (safe_strcmp (val1->key, val2->key))
|
|
|
586 {
|
|
|
587 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "key change",
|
|
|
588 val1->key, val2->key);
|
|
|
589 change = max (change, VISIBLE_CHANGE);
|
|
|
590 safe_free_str (val1->key);
|
|
|
591 val1->key = safe_strdup (val2->key);
|
|
|
592 }
|
|
|
593 if (val1->accel != val2->accel)
|
|
|
594 {
|
|
|
595 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "accelerator change",
|
|
|
596 val1->accel, val2->accel);
|
|
|
597 change = max (change, VISIBLE_CHANGE);
|
|
|
598 val1->accel = val2->accel;
|
|
|
599 }
|
|
|
600 if (val1->enabled != val2->enabled)
|
|
|
601 {
|
|
|
602 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "enablement change",
|
|
|
603 val1->enabled, val2->enabled);
|
|
|
604 change = max (change, VISIBLE_CHANGE);
|
|
|
605 val1->enabled = val2->enabled;
|
|
|
606 }
|
|
|
607 if (val1->selected != val2->selected)
|
|
|
608 {
|
|
|
609 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "selection change",
|
|
|
610 val1->selected, val2->selected);
|
|
|
611 change = max (change, VISIBLE_CHANGE);
|
|
|
612 val1->selected = val2->selected;
|
|
|
613 }
|
|
|
614 if (val1->call_data != val2->call_data)
|
|
|
615 {
|
|
|
616 EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "call-data change",
|
|
|
617 val1->call_data, val2->call_data);
|
|
|
618 change = max (change, INVISIBLE_CHANGE);
|
|
|
619 val1->call_data = val2->call_data;
|
|
|
620 }
|
|
434
|
621 #ifdef HAVE_WIDGETS
|
|
|
622 if (merge_widget_value_args (val1, val2))
|
|
|
623 {
|
|
|
624 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "widget change", 0, 0);
|
|
|
625 change = max (change, VISIBLE_CHANGE);
|
|
|
626 }
|
|
|
627 #endif
|
|
|
628
|
|
428
|
629 #ifdef NEED_SCROLLBARS
|
|
|
630 if (merge_scrollbar_values (val1, val2))
|
|
|
631 {
|
|
|
632 EXPLAIN (val1->name, change, VISIBLE_CHANGE, "scrollbar change", 0, 0);
|
|
|
633 change = max (change, VISIBLE_CHANGE);
|
|
|
634 }
|
|
|
635 #endif
|
|
|
636
|
|
|
637 if (level > 0)
|
|
|
638 {
|
|
|
639 merged_contents =
|
|
|
640 merge_widget_value (val1->contents, val2->contents, level - 1);
|
|
|
641
|
|
|
642 if (val1->contents && !merged_contents)
|
|
|
643 {
|
|
|
644 EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents gone)",
|
|
|
645 0, 0);
|
|
|
646 change = max (change, INVISIBLE_CHANGE);
|
|
|
647 }
|
|
|
648 else if (merged_contents && merged_contents->change != NO_CHANGE)
|
|
|
649 {
|
|
|
650 EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents change)",
|
|
|
651 0, 0);
|
|
|
652 change = max (change, INVISIBLE_CHANGE);
|
|
|
653 }
|
|
|
654
|
|
|
655 val1->contents = merged_contents;
|
|
|
656 }
|
|
|
657
|
|
|
658 merged_next = merge_widget_value (val1->next, val2->next, level);
|
|
|
659
|
|
|
660 if (val1->next && !merged_next)
|
|
|
661 {
|
|
|
662 EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(following gone)",
|
|
|
663 0, 0);
|
|
|
664 change = max (change, STRUCTURAL_CHANGE);
|
|
|
665 }
|
|
|
666 else if (merged_next)
|
|
|
667 {
|
|
|
668 if (merged_next->change)
|
|
|
669 {
|
|
|
670 EXPLAIN (val1->name, change, merged_next->change, "(following change)",
|
|
|
671 0, 0);
|
|
|
672 }
|
|
|
673 change = max (change, merged_next->change);
|
|
|
674 }
|
|
|
675
|
|
|
676 val1->next = merged_next;
|
|
|
677
|
|
|
678 val1->change = change;
|
|
|
679
|
|
|
680 if (change > NO_CHANGE && val1->toolkit_data)
|
|
|
681 {
|
|
|
682 if (val1->free_toolkit_data)
|
|
|
683 XtFree ((char *) val1->toolkit_data);
|
|
|
684 val1->toolkit_data = NULL;
|
|
|
685 }
|
|
|
686
|
|
|
687 return val1;
|
|
|
688 }
|
|
|
689
|
|
|
690
|
|
|
691 /* modifying the widgets */
|
|
|
692 static Widget
|
|
|
693 name_to_widget (widget_instance *instance, CONST char *name)
|
|
|
694 {
|
|
|
695 Widget widget = NULL;
|
|
|
696
|
|
|
697 if (!instance->widget)
|
|
|
698 return NULL;
|
|
|
699
|
|
|
700 if (!strcmp (XtName (instance->widget), name))
|
|
|
701 widget = instance->widget;
|
|
|
702 else
|
|
|
703 {
|
|
|
704 int length = strlen (name) + 2;
|
|
|
705 char *real_name = (char *) alloca (length);
|
|
|
706 real_name [0] = '*';
|
|
|
707 strcpy (real_name + 1, name);
|
|
|
708
|
|
|
709 widget = XtNameToWidget (instance->widget, real_name);
|
|
|
710 }
|
|
|
711 return widget;
|
|
|
712 }
|
|
|
713
|
|
|
714 static void
|
|
|
715 set_one_value (widget_instance *instance, widget_value *val, Boolean deep_p)
|
|
|
716 {
|
|
|
717 Widget widget = name_to_widget (instance, val->name);
|
|
|
718
|
|
|
719 if (widget)
|
|
|
720 {
|
|
|
721 #ifdef NEED_LUCID
|
|
|
722 if (lw_lucid_widget_p (instance->widget))
|
|
|
723 xlw_update_one_widget (instance, widget, val, deep_p);
|
|
|
724 #endif
|
|
|
725 #ifdef NEED_MOTIF
|
|
|
726 if (lw_motif_widget_p (instance->widget))
|
|
|
727 xm_update_one_widget (instance, widget, val, deep_p);
|
|
|
728 #endif
|
|
|
729 #ifdef NEED_ATHENA
|
|
|
730 if (lw_xaw_widget_p (instance->widget))
|
|
|
731 xaw_update_one_widget (instance, widget, val, deep_p);
|
|
|
732 #endif
|
|
|
733 }
|
|
|
734 }
|
|
|
735
|
|
|
736 static void
|
|
|
737 update_one_widget_instance (widget_instance *instance, Boolean deep_p)
|
|
|
738 {
|
|
|
739 widget_value *val;
|
|
|
740
|
|
|
741 if (!instance->widget)
|
|
|
742 /* the widget was destroyed */
|
|
|
743 return;
|
|
|
744
|
|
|
745 for (val = instance->info->val; val; val = val->next)
|
|
|
746 if (val->change != NO_CHANGE)
|
|
|
747 set_one_value (instance, val, deep_p);
|
|
|
748 }
|
|
|
749
|
|
|
750 static void
|
|
|
751 update_all_widget_values (widget_info *info, Boolean deep_p)
|
|
|
752 {
|
|
|
753 widget_instance *instance;
|
|
|
754 widget_value *val;
|
|
|
755
|
|
|
756 for (instance = info->instances; instance; instance = instance->next)
|
|
|
757 update_one_widget_instance (instance, deep_p);
|
|
|
758
|
|
|
759 for (val = info->val; val; val = val->next)
|
|
|
760 val->change = NO_CHANGE;
|
|
|
761 }
|
|
|
762
|
|
|
763 void
|
|
|
764 lw_modify_all_widgets (LWLIB_ID id, widget_value *val, Boolean deep_p)
|
|
|
765 {
|
|
|
766 widget_info *info = get_widget_info (id, False);
|
|
|
767 widget_value *new_val;
|
|
|
768 widget_value *next_new_val;
|
|
|
769 widget_value *cur;
|
|
|
770 widget_value *prev;
|
|
|
771 widget_value *next;
|
|
|
772 int found;
|
|
|
773
|
|
|
774 if (!info)
|
|
|
775 return;
|
|
|
776
|
|
|
777 for (new_val = val; new_val; new_val = new_val->next)
|
|
|
778 {
|
|
|
779 next_new_val = new_val->next;
|
|
|
780 new_val->next = NULL;
|
|
|
781 found = False;
|
|
|
782 for (prev = NULL, cur = info->val; cur; prev = cur, cur = cur->next)
|
|
|
783 if (!strcmp (cur->name, new_val->name))
|
|
|
784 {
|
|
|
785 found = True;
|
|
|
786 next = cur->next;
|
|
|
787 cur->next = NULL;
|
|
|
788 cur = merge_widget_value (cur, new_val, deep_p ? 1000 : 1);
|
|
|
789 if (prev)
|
|
|
790 prev->next = cur ? cur : next;
|
|
|
791 else
|
|
|
792 info->val = cur ? cur : next;
|
|
|
793 if (cur)
|
|
|
794 cur->next = next;
|
|
|
795 break;
|
|
|
796 }
|
|
|
797 if (!found)
|
|
|
798 {
|
|
|
799 /* Could not find it, add it */
|
|
|
800 if (prev)
|
|
|
801 prev->next = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE);
|
|
|
802 else
|
|
|
803 info->val = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE);
|
|
|
804 }
|
|
|
805 new_val->next = next_new_val;
|
|
|
806 }
|
|
|
807
|
|
|
808 update_all_widget_values (info, deep_p);
|
|
|
809 }
|
|
|
810
|
|
|
811
|
|
|
812 /* creating the widgets */
|
|
|
813
|
|
|
814 static void
|
|
|
815 initialize_widget_instance (widget_instance *instance)
|
|
|
816 {
|
|
|
817 widget_value *val;
|
|
|
818
|
|
|
819 for (val = instance->info->val; val; val = val->next)
|
|
|
820 val->change = STRUCTURAL_CHANGE;
|
|
|
821
|
|
|
822 update_one_widget_instance (instance, True);
|
|
|
823
|
|
|
824 for (val = instance->info->val; val; val = val->next)
|
|
|
825 val->change = NO_CHANGE;
|
|
|
826 }
|
|
|
827
|
|
|
828
|
|
|
829 static widget_creation_function
|
|
|
830 find_in_table (CONST char *type, widget_creation_entry *table)
|
|
|
831 {
|
|
|
832 widget_creation_entry *cur;
|
|
|
833 for (cur = table; cur->type; cur++)
|
|
|
834 if (!strcasecmp (type, cur->type))
|
|
|
835 return cur->function;
|
|
|
836 return NULL;
|
|
|
837 }
|
|
|
838
|
|
|
839 static Boolean
|
|
|
840 dialog_spec_p (CONST char *name)
|
|
|
841 {
|
|
|
842 /* return True if name matches [EILPQeilpq][1-9][Bb] or
|
|
|
843 [EILPQeilpq][1-9][Bb][Rr][1-9] */
|
|
|
844 if (!name)
|
|
|
845 return False;
|
|
|
846
|
|
|
847 switch (name [0])
|
|
|
848 {
|
|
|
849 case 'E': case 'I': case 'L': case 'P': case 'Q':
|
|
|
850 case 'e': case 'i': case 'l': case 'p': case 'q':
|
|
|
851 if (name [1] >= '0' && name [1] <= '9')
|
|
|
852 {
|
|
|
853 if (name [2] != 'B' && name [2] != 'b')
|
|
|
854 return False;
|
|
|
855 if (!name [3])
|
|
|
856 return True;
|
|
|
857 if ((name [3] == 'T' || name [3] == 't') && !name [4])
|
|
|
858 return True;
|
|
|
859 if ((name [3] == 'R' || name [3] == 'r')
|
|
|
860 && name [4] >= '0' && name [4] <= '9' && !name [5])
|
|
|
861 return True;
|
|
|
862 return False;
|
|
|
863 }
|
|
|
864 else
|
|
|
865 return False;
|
|
|
866
|
|
|
867 default:
|
|
|
868 return False;
|
|
|
869 }
|
|
|
870 }
|
|
|
871
|
|
|
872 static void
|
|
|
873 instantiate_widget_instance (widget_instance *instance)
|
|
|
874 {
|
|
|
875 widget_creation_function function = NULL;
|
|
|
876
|
|
|
877 #ifdef NEED_LUCID
|
|
|
878 if (!function)
|
|
|
879 function = find_in_table (instance->info->type, xlw_creation_table);
|
|
|
880 #endif
|
|
|
881 #ifdef NEED_MOTIF
|
|
|
882 if (!function)
|
|
|
883 function = find_in_table (instance->info->type, xm_creation_table);
|
|
|
884 #endif
|
|
|
885 #ifdef NEED_ATHENA
|
|
|
886 if (!function)
|
|
|
887 function = find_in_table (instance->info->type, xaw_creation_table);
|
|
|
888 #endif
|
|
|
889
|
|
|
890 if (!function)
|
|
|
891 {
|
|
|
892 if (dialog_spec_p (instance->info->type))
|
|
|
893 {
|
|
|
894 #ifdef LWLIB_DIALOGS_MOTIF
|
|
|
895 if (!function)
|
|
|
896 function = xm_create_dialog;
|
|
|
897 #endif
|
|
|
898 #ifdef LWLIB_DIALOGS_ATHENA
|
|
|
899 if (!function)
|
|
|
900 function = xaw_create_dialog;
|
|
|
901 #endif
|
|
|
902 #ifdef LWLIB_DIALOGS_LUCID
|
|
|
903 /* not yet (not ever?) */
|
|
|
904 #endif
|
|
|
905 }
|
|
|
906 }
|
|
|
907
|
|
|
908 if (!function)
|
|
|
909 {
|
|
|
910 fprintf (stderr, "No creation function for widget type %s\n",
|
|
|
911 instance->info->type);
|
|
|
912 abort ();
|
|
|
913 }
|
|
|
914
|
|
|
915 instance->widget = (*function) (instance);
|
|
|
916
|
|
|
917 if (!instance->widget)
|
|
|
918 abort ();
|
|
|
919
|
|
|
920 /* XtRealizeWidget (instance->widget);*/
|
|
|
921 }
|
|
|
922
|
|
|
923 void
|
|
|
924 lw_register_widget (CONST char *type, CONST char *name,
|
|
|
925 LWLIB_ID id, widget_value *val,
|
|
|
926 lw_callback pre_activate_cb, lw_callback selection_cb,
|
|
|
927 lw_callback post_activate_cb)
|
|
|
928 {
|
|
|
929 if (!get_widget_info (id, False))
|
|
|
930 allocate_widget_info (type, name, id, val, pre_activate_cb, selection_cb,
|
|
|
931 post_activate_cb);
|
|
|
932 }
|
|
|
933
|
|
|
934 Widget
|
|
|
935 lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
|
|
|
936 {
|
|
|
937 widget_instance *instance = find_instance (id, parent, pop_up_p);
|
|
|
938 return instance ? instance->widget : NULL;
|
|
|
939 }
|
|
|
940
|
|
|
941 Widget
|
|
|
942 lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
|
|
|
943 {
|
|
|
944 widget_instance *instance = find_instance (id, parent, pop_up_p);
|
|
|
945
|
|
|
946 if (!instance)
|
|
|
947 {
|
|
|
948 widget_info *info = get_widget_info (id, False);
|
|
|
949 if (!info)
|
|
|
950 return NULL;
|
|
|
951 instance = allocate_widget_instance (info, parent, pop_up_p);
|
|
|
952 initialize_widget_instance (instance);
|
|
|
953 }
|
|
|
954 if (!instance->widget)
|
|
|
955 abort ();
|
|
|
956 return instance->widget;
|
|
|
957 }
|
|
|
958
|
|
|
959 Widget
|
|
|
960 lw_create_widget (CONST char *type, CONST char *name,
|
|
|
961 LWLIB_ID id, widget_value *val,
|
|
|
962 Widget parent, Boolean pop_up_p, lw_callback pre_activate_cb,
|
|
|
963 lw_callback selection_cb, lw_callback post_activate_cb)
|
|
|
964 {
|
|
|
965 lw_register_widget (type, name, id, val, pre_activate_cb, selection_cb,
|
|
|
966 post_activate_cb);
|
|
|
967 return lw_make_widget (id, parent, pop_up_p);
|
|
|
968 }
|
|
|
969
|
|
|
970
|
|
|
971 /* destroying the widgets */
|
|
|
972 static void
|
|
|
973 destroy_one_instance (widget_instance *instance)
|
|
|
974 {
|
|
|
975 /* Remove the destroy callback on the widget; that callback will try to
|
|
|
976 dereference the instance object (to set its widget slot to 0, since the
|
|
|
977 widget is dead.) Since the instance is now dead, we don't have to worry
|
|
|
978 about the fact that its widget is dead too.
|
|
|
979
|
|
|
980 This happens in the Phase2Destroy of the widget, so this callback would
|
|
|
981 not have been run until arbitrarily long after the instance was freed.
|
|
|
982 */
|
|
|
983 if (instance->widget)
|
|
|
984 XtRemoveCallback (instance->widget, XtNdestroyCallback,
|
|
|
985 mark_widget_destroyed, (XtPointer)instance);
|
|
|
986
|
|
|
987 if (instance->widget)
|
|
|
988 {
|
|
|
989 /* The else are pretty tricky here, including the empty statement
|
|
|
990 at the end because it would be very bad to destroy a widget
|
|
|
991 twice. */
|
|
|
992 #ifdef NEED_LUCID
|
|
|
993 if (lw_lucid_widget_p (instance->widget))
|
|
|
994 xlw_destroy_instance (instance);
|
|
|
995 else
|
|
|
996 #endif
|
|
|
997 #ifdef NEED_MOTIF
|
|
|
998 if (lw_motif_widget_p (instance->widget))
|
|
|
999 xm_destroy_instance (instance);
|
|
|
1000 else
|
|
|
1001 #endif
|
|
|
1002 #ifdef NEED_ATHENA
|
|
|
1003 if (lw_xaw_widget_p (instance->widget))
|
|
|
1004 xaw_destroy_instance (instance);
|
|
|
1005 else
|
|
|
1006 #endif
|
|
|
1007 {
|
|
|
1008 /* do not remove the empty statement */
|
|
|
1009 ;
|
|
|
1010 }
|
|
|
1011 }
|
|
|
1012
|
|
|
1013 free_widget_instance (instance);
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 void
|
|
|
1017 lw_destroy_widget (Widget w)
|
|
|
1018 {
|
|
|
1019 widget_instance *instance = get_widget_instance (w, True);
|
|
|
1020
|
|
|
1021 if (instance)
|
|
|
1022 {
|
|
|
1023 widget_info *info = instance->info;
|
|
|
1024 /* instance has already been removed from the list; free it */
|
|
|
1025 destroy_one_instance (instance);
|
|
|
1026 /* if there are no instances left, free the info too */
|
|
|
1027 if (!info->instances)
|
|
|
1028 lw_destroy_all_widgets (info->id);
|
|
|
1029 }
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 void
|
|
|
1033 lw_destroy_all_widgets (LWLIB_ID id)
|
|
|
1034 {
|
|
|
1035 widget_info *info = get_widget_info (id, True);
|
|
|
1036 widget_instance *instance;
|
|
|
1037 widget_instance *next;
|
|
|
1038
|
|
|
1039 if (info)
|
|
|
1040 {
|
|
|
1041 for (instance = info->instances; instance; )
|
|
|
1042 {
|
|
|
1043 next = instance->next;
|
|
|
1044 destroy_one_instance (instance);
|
|
|
1045 instance = next;
|
|
|
1046 }
|
|
|
1047 free_widget_info (info);
|
|
|
1048 }
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 void
|
|
|
1052 lw_destroy_everything ()
|
|
|
1053 {
|
|
|
1054 while (all_widget_info)
|
|
|
1055 lw_destroy_all_widgets (all_widget_info->id);
|
|
|
1056 }
|
|
|
1057
|
|
|
1058 void
|
|
|
1059 lw_destroy_all_pop_ups ()
|
|
|
1060 {
|
|
|
1061 widget_info *info;
|
|
|
1062 widget_info *next;
|
|
|
1063 widget_instance *instance;
|
|
|
1064
|
|
|
1065 for (info = all_widget_info; info; info = next)
|
|
|
1066 {
|
|
|
1067 next = info->next;
|
|
|
1068 instance = info->instances;
|
|
|
1069 if (instance && instance->pop_up_p)
|
|
|
1070 lw_destroy_all_widgets (info->id);
|
|
|
1071 }
|
|
|
1072 }
|
|
|
1073
|
|
|
1074 Widget
|
|
|
1075 lw_raise_all_pop_up_widgets (void)
|
|
|
1076 {
|
|
|
1077 widget_info *info;
|
|
|
1078 widget_instance *instance;
|
|
|
1079 Widget result = NULL;
|
|
|
1080
|
|
|
1081 for (info = all_widget_info; info; info = info->next)
|
|
|
1082 for (instance = info->instances; instance; instance = instance->next)
|
|
|
1083 if (instance->pop_up_p)
|
|
|
1084 {
|
|
|
1085 Widget widget = instance->widget;
|
|
|
1086 if (widget)
|
|
|
1087 {
|
|
|
1088 if (XtIsManaged (widget)
|
|
|
1089 #ifdef NEED_MOTIF
|
|
|
1090 /* What a complete load of crap!!!!
|
|
|
1091 When a dialogShell is on the screen, it is not managed!
|
|
|
1092 */
|
|
|
1093 || (lw_motif_widget_p (instance->widget) &&
|
|
|
1094 XtIsManaged (first_child (widget)))
|
|
|
1095 #endif
|
|
|
1096 )
|
|
|
1097 {
|
|
|
1098 if (!result)
|
|
|
1099 result = widget;
|
|
|
1100 XMapRaised (XtDisplay (widget), XtWindow (widget));
|
|
|
1101 }
|
|
|
1102 }
|
|
|
1103 }
|
|
|
1104 return result;
|
|
|
1105 }
|
|
|
1106
|
|
|
1107 static void
|
|
|
1108 lw_pop_all_widgets (LWLIB_ID id, Boolean up)
|
|
|
1109 {
|
|
|
1110 widget_info *info = get_widget_info (id, False);
|
|
|
1111 widget_instance *instance;
|
|
|
1112
|
|
|
1113 if (info)
|
|
|
1114 for (instance = info->instances; instance; instance = instance->next)
|
|
|
1115 if (instance->pop_up_p && instance->widget)
|
|
|
1116 {
|
|
|
1117 #ifdef NEED_LUCID
|
|
|
1118 if (lw_lucid_widget_p (instance->widget))
|
|
|
1119 {
|
|
|
1120 XtRealizeWidget (instance->widget);
|
|
|
1121 xlw_pop_instance (instance, up);
|
|
|
1122 }
|
|
|
1123 #endif
|
|
|
1124 #ifdef NEED_MOTIF
|
|
|
1125 if (lw_motif_widget_p (instance->widget))
|
|
|
1126 {
|
|
|
1127 XtRealizeWidget (instance->widget);
|
|
|
1128 xm_pop_instance (instance, up);
|
|
|
1129 }
|
|
|
1130 #endif
|
|
|
1131 #ifdef NEED_ATHENA
|
|
|
1132 if (lw_xaw_widget_p (instance->widget))
|
|
|
1133 {
|
|
|
1134 XtRealizeWidget (XtParent (instance->widget));
|
|
|
1135 XtRealizeWidget (instance->widget);
|
|
|
1136 xaw_pop_instance (instance, up);
|
|
|
1137 }
|
|
|
1138 #endif
|
|
|
1139 }
|
|
|
1140 }
|
|
|
1141
|
|
|
1142 void
|
|
|
1143 lw_pop_up_all_widgets (LWLIB_ID id)
|
|
|
1144 {
|
|
|
1145 lw_pop_all_widgets (id, True);
|
|
|
1146 }
|
|
|
1147
|
|
|
1148 void
|
|
|
1149 lw_pop_down_all_widgets (LWLIB_ID id)
|
|
|
1150 {
|
|
|
1151 lw_pop_all_widgets (id, False);
|
|
|
1152 }
|
|
|
1153
|
|
|
1154 void
|
|
|
1155 lw_popup_menu (Widget widget, XEvent *event)
|
|
|
1156 {
|
|
|
1157 #ifdef LWLIB_MENUBARS_LUCID
|
|
|
1158 if (lw_lucid_widget_p (widget))
|
|
|
1159 xlw_popup_menu (widget, event);
|
|
|
1160 #endif
|
|
|
1161 #ifdef LWLIB_MENUBARS_MOTIF
|
|
|
1162 if (lw_motif_widget_p (widget))
|
|
|
1163 xm_popup_menu (widget, event);
|
|
|
1164 #endif
|
|
|
1165 #ifdef LWLIB_MENUBARS_ATHENA
|
|
|
1166 if (lw_xaw_widget_p (widget))
|
|
|
1167 xaw_popup_menu (widget, event); /* not implemented */
|
|
|
1168 #endif
|
|
|
1169 }
|
|
|
1170
|
|
|
1171 /* get the values back */
|
|
|
1172 static Boolean
|
|
|
1173 get_one_value (widget_instance *instance, widget_value *val)
|
|
|
1174 {
|
|
|
1175 Widget widget = name_to_widget (instance, val->name);
|
|
|
1176
|
|
|
1177 if (widget)
|
|
|
1178 {
|
|
|
1179 #ifdef NEED_LUCID
|
|
|
1180 if (lw_lucid_widget_p (instance->widget))
|
|
|
1181 xlw_update_one_value (instance, widget, val);
|
|
|
1182 #endif
|
|
|
1183 #ifdef NEED_MOTIF
|
|
|
1184 if (lw_motif_widget_p (instance->widget))
|
|
|
1185 xm_update_one_value (instance, widget, val);
|
|
|
1186 #endif
|
|
|
1187 #ifdef NEED_ATHENA
|
|
|
1188 if (lw_xaw_widget_p (instance->widget))
|
|
|
1189 xaw_update_one_value (instance, widget, val);
|
|
|
1190 #endif
|
|
|
1191 return True;
|
|
|
1192 }
|
|
|
1193 else
|
|
|
1194 return False;
|
|
|
1195 }
|
|
|
1196
|
|
|
1197 Boolean
|
|
|
1198 lw_get_some_values (LWLIB_ID id, widget_value *val_out)
|
|
|
1199 {
|
|
|
1200 widget_info *info = get_widget_info (id, False);
|
|
|
1201 widget_instance *instance;
|
|
|
1202 widget_value *val;
|
|
|
1203 Boolean result = False;
|
|
|
1204
|
|
|
1205 if (!info)
|
|
|
1206 return False;
|
|
|
1207
|
|
|
1208 instance = info->instances;
|
|
|
1209 if (!instance)
|
|
|
1210 return False;
|
|
|
1211
|
|
|
1212 for (val = val_out; val; val = val->next)
|
|
|
1213 if (get_one_value (instance, val))
|
|
|
1214 result = True;
|
|
|
1215
|
|
|
1216 return result;
|
|
|
1217 }
|
|
|
1218
|
|
|
1219 widget_value*
|
|
|
1220 lw_get_all_values (LWLIB_ID id)
|
|
|
1221 {
|
|
|
1222 widget_info *info = get_widget_info (id, False);
|
|
|
1223 widget_value *val = info->val;
|
|
|
1224 if (lw_get_some_values (id, val))
|
|
|
1225 return val;
|
|
|
1226 else
|
|
|
1227 return NULL;
|
|
|
1228 }
|
|
|
1229
|
|
|
1230 /* internal function used by the library dependent implementation to get the
|
|
|
1231 widget_value for a given widget in an instance */
|
|
|
1232 widget_value*
|
|
|
1233 lw_get_widget_value_for_widget (widget_instance *instance, Widget w)
|
|
|
1234 {
|
|
|
1235 char *name = XtName (w);
|
|
|
1236 widget_value *cur;
|
|
|
1237 for (cur = instance->info->val; cur; cur = cur->next)
|
|
|
1238 if (!strcmp (cur->name, name))
|
|
|
1239 return cur;
|
|
|
1240 return NULL;
|
|
|
1241 }
|
|
|
1242
|
|
|
1243
|
|
|
1244 /* update other instances value when one thing changed */
|
|
|
1245 /* This function can be used as a an XtCallback for the widgets that get
|
|
|
1246 modified to update other instances of the widgets. Closure should be the
|
|
|
1247 widget_instance. */
|
|
|
1248 void
|
|
|
1249 lw_internal_update_other_instances (Widget widget, XtPointer closure,
|
|
|
1250 XtPointer call_data)
|
|
|
1251 {
|
|
|
1252 /* To forbid recursive calls */
|
|
|
1253 static Boolean updating;
|
|
|
1254
|
|
|
1255 widget_instance *instance = (widget_instance*)closure;
|
|
|
1256 char *name = XtName (widget);
|
|
|
1257 widget_info *info;
|
|
|
1258 widget_instance *cur;
|
|
|
1259 widget_value *val;
|
|
|
1260
|
|
|
1261 /* never recurse as this could cause infinite recursions. */
|
|
|
1262 if (updating)
|
|
|
1263 return;
|
|
|
1264
|
|
|
1265 /* protect against the widget being destroyed */
|
|
|
1266 if (XtWidgetBeingDestroyedP (widget))
|
|
|
1267 return;
|
|
|
1268
|
|
|
1269 /* Return immediately if there are no other instances */
|
|
|
1270 info = instance->info;
|
|
|
1271 if (!info->instances->next)
|
|
|
1272 return;
|
|
|
1273
|
|
|
1274 updating = True;
|
|
|
1275
|
|
|
1276 for (val = info->val; val && strcmp (val->name, name); val = val->next);
|
|
|
1277
|
|
|
1278 if (val && get_one_value (instance, val))
|
|
|
1279 for (cur = info->instances; cur; cur = cur->next)
|
|
|
1280 if (cur != instance)
|
|
|
1281 set_one_value (cur, val, True);
|
|
|
1282
|
|
|
1283 updating = False;
|
|
|
1284 }
|
|
|
1285
|
|
|
1286
|
|
|
1287
|
|
|
1288 /* get the id */
|
|
|
1289
|
|
|
1290 LWLIB_ID
|
|
|
1291 lw_get_widget_id (Widget w)
|
|
|
1292 {
|
|
|
1293 widget_instance *instance = get_widget_instance (w, False);
|
|
|
1294
|
|
|
1295 return instance ? instance->info->id : 0;
|
|
|
1296 }
|
|
|
1297
|
|
|
1298
|
|
|
1299 /* set the keyboard focus */
|
|
|
1300 void
|
|
|
1301 lw_set_keyboard_focus (Widget parent, Widget w)
|
|
|
1302 {
|
|
|
1303 #if defined(NEED_MOTIF) && !defined(LESSTIF_VERSION)
|
|
|
1304 /* This loses with Lesstif v0.75a */
|
|
|
1305 xm_set_keyboard_focus (parent, w);
|
|
|
1306 #else
|
|
|
1307 XtSetKeyboardFocus (parent, w);
|
|
|
1308 #endif
|
|
|
1309 }
|
|
|
1310
|
|
|
1311
|
|
|
1312 /* Show busy */
|
|
|
1313 static void
|
|
|
1314 show_one_widget_busy (Widget w, Boolean flag)
|
|
|
1315 {
|
|
|
1316 Pixel foreground = 0;
|
|
|
1317 Pixel background = 1;
|
|
|
1318 Widget widget_to_invert = XtNameToWidget (w, "*sheet");
|
|
|
1319 Arg al [2];
|
|
|
1320
|
|
|
1321 if (!widget_to_invert)
|
|
|
1322 widget_to_invert = w;
|
|
|
1323
|
|
|
1324 XtSetArg (al [0], XtNforeground, &foreground);
|
|
|
1325 XtSetArg (al [1], XtNbackground, &background);
|
|
|
1326 XtGetValues (widget_to_invert, al, 2);
|
|
|
1327
|
|
|
1328 XtSetArg (al [0], XtNforeground, background);
|
|
|
1329 XtSetArg (al [1], XtNbackground, foreground);
|
|
|
1330 XtSetValues (widget_to_invert, al, 2);
|
|
|
1331 }
|
|
|
1332
|
|
|
1333 void
|
|
|
1334 lw_show_busy (Widget w, Boolean busy)
|
|
|
1335 {
|
|
|
1336 widget_instance *instance = get_widget_instance (w, False);
|
|
|
1337 widget_info *info;
|
|
|
1338 widget_instance *next;
|
|
|
1339
|
|
|
1340 if (instance)
|
|
|
1341 {
|
|
|
1342 info = instance->info;
|
|
|
1343 if (info->busy != busy)
|
|
|
1344 {
|
|
|
1345 for (next = info->instances; next; next = next->next)
|
|
|
1346 if (next->widget)
|
|
|
1347 show_one_widget_busy (next->widget, busy);
|
|
|
1348 info->busy = busy;
|
|
|
1349 }
|
|
|
1350 }
|
|
|
1351 }
|
|
|
1352
|
|
|
1353 void lw_add_value_args_to_args (widget_value* wv, ArgList addto, int* offset)
|
|
|
1354 {
|
|
|
1355 int i;
|
|
434
|
1356 if (wv->args && wv->args->nargs)
|
|
428
|
1357 {
|
|
434
|
1358 for (i = 0; i<wv->args->nargs; i++)
|
|
428
|
1359 {
|
|
434
|
1360 addto[i + *offset] = wv->args->args[i];
|
|
428
|
1361 }
|
|
434
|
1362 *offset += wv->args->nargs;
|
|
428
|
1363 }
|
|
|
1364 }
|
|
|
1365
|
|
434
|
1366 void lw_add_widget_value_arg (widget_value* wv, String name, XtArgVal value)
|
|
|
1367 {
|
|
|
1368 if (!wv->args)
|
|
|
1369 {
|
|
|
1370 wv->args = (widget_args *) malloc (sizeof (widget_args));
|
|
|
1371 memset (wv->args, 0, sizeof (widget_args));
|
|
|
1372 wv->args->ref_count = 1;
|
|
|
1373 wv->args->nargs = 0;
|
|
|
1374 wv->args->args = (ArgList) malloc (sizeof (Arg) * 10);
|
|
|
1375 memset (wv->args->args, 0, sizeof (Arg) * 10);
|
|
|
1376 }
|
|
|
1377
|
|
|
1378 if (wv->args->nargs > 10)
|
|
|
1379 return;
|
|
|
1380
|
|
|
1381 XtSetArg (wv->args->args [wv->args->nargs], name, value); wv->args->nargs++;
|
|
|
1382 }
|
|
|
1383
|
|
|
1384 static void free_widget_value_args (widget_value* wv)
|
|
|
1385 {
|
|
|
1386 if (wv->args)
|
|
|
1387 {
|
|
|
1388 if (--wv->args->ref_count <= 0)
|
|
|
1389 {
|
|
|
1390 #ifdef LWLIB_WIDGETS_MOTIF
|
|
|
1391 int i;
|
|
|
1392 for (i = 0; i < wv->args->nargs; i++)
|
|
|
1393 {
|
|
|
1394 if (!strcmp (wv->args->args[i].name, XmNfontList))
|
|
|
1395 XmFontListFree ((XmFontList)wv->args->args[i].value);
|
|
|
1396 }
|
|
|
1397 #endif
|
|
|
1398 free (wv->args->args);
|
|
|
1399 free (wv->args);
|
|
|
1400 wv->args = (widget_args*)0xDEADBEEF;
|
|
|
1401 }
|
|
|
1402 }
|
|
|
1403 }
|
|
|
1404
|
|
|
1405 void lw_copy_widget_value_args (widget_value* val, widget_value* copy)
|
|
|
1406 {
|
|
|
1407 if (!val->args)
|
|
|
1408 {
|
|
|
1409 if (copy->args)
|
|
|
1410 free_widget_value_args (copy);
|
|
|
1411 copy->args = 0;
|
|
|
1412 }
|
|
|
1413 else
|
|
|
1414 {
|
|
|
1415 copy->args = val->args;
|
|
|
1416 copy->args->ref_count++;
|
|
|
1417 }
|
|
|
1418 }
|
|
|
1419
|
