ui/motif/button.c

Sat, 11 Nov 2017 11:59:06 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sat, 11 Nov 2017 11:59:06 +0100
changeset 143
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parent 112
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child 153
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permissions
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adds observer support for textarea and textfield (GTK)

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2014 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include <stdio.h>
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30 #include <stdlib.h>
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31
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32 #include "button.h"
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33 #include "container.h"
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34 #include "../common/context.h"
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35 #include "../../ucx/mempool.h"
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36
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37
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38 UIWIDGET ui_button(UiObject *obj, char *label, ui_callback f, void *data) {
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39 UiContainer *ct = uic_get_current_container(obj);
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40 XmString str = XmStringCreateLocalized(label);
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41
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42 int n = 0;
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43 Arg args[16];
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44
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45 XtSetArg(args[n], XmNlabelString, str);
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46 n++;
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47
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48 Widget parent = ct->prepare(ct, args, &n, FALSE);
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49 Widget button = XmCreatePushButton(parent, "button", args, n);
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50 ct->add(ct, button);
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51
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52 if(f) {
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53 UiEventData *event = ucx_mempool_malloc(
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54 obj->ctx->mempool,
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55 sizeof(UiEventData));
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56 event->obj = obj;
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57 event->userdata = data;
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58 event->callback = f;
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59 event->value = 0;
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60 XtAddCallback(
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61 button,
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62 XmNactivateCallback,
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63 (XtCallbackProc)ui_push_button_callback,
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64 event);
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65 }
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66
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67 XtManageChild(button);
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68
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69 return button;
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70 }
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71
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72 // wrapper
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73 int ui_toggle_button_get(UiInteger *i) {
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74 int state = 0;
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75 XtVaGetValues(i->obj, XmNset, &state, NULL);
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76 i->value = state;
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77 return state;
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78 }
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79
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80 void ui_toggle_button_set(UiInteger *i, int value) {
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81 Arg arg;
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82 XtSetArg(arg, XmNset, value);
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83 XtSetValues(i->obj, &arg, 1);
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84 i->value = value;
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85 }
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86
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87 void ui_toggle_button_callback(
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88 Widget widget,
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89 UiEventData *event,
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90 XmToggleButtonCallbackStruct *tb)
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91 {
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92 UiEvent e;
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93 e.obj = event->obj;
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94 e.window = event->obj->window;
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95 // TODO: e.document
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96 e.intval = tb->set;
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97 event->callback(&e, event->userdata);
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98 }
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99
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100 void ui_push_button_callback(Widget widget, UiEventData *event, XtPointer d) {
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101 UiEvent e;
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102 e.obj = event->obj;
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103 e.window = event->obj->window;
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104 e.document = event->obj->ctx->document;
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105 e.intval = event->value;
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106 event->callback(&e, event->userdata);
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107 }
112
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108
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109
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110 static void radio_callback(
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111 Widget widget,
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112 RadioEventData *event,
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113 XmToggleButtonCallbackStruct *tb)
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114 {
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115 if(tb->set) {
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116 RadioButtonGroup *group = event->group;
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117 if(group->current) {
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118 Arg arg;
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119 XtSetArg(arg, XmNset, FALSE);
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120 XtSetValues(group->current, &arg, 1);
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121 }
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122 group->current = widget;
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123 }
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124 }
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125
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126 UIWIDGET ui_radiobutton(UiObject *obj, char *label, UiInteger *rgroup) {
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127 UiContainer *ct = uic_get_current_container(obj);
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128 XmString str = XmStringCreateLocalized(label);
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129
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130 int n = 0;
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131 Arg args[16];
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132
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133 XtSetArg(args[n], XmNlabelString, str);
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134 n++;
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135 XtSetArg(args[n], XmNindicatorType, XmONE_OF_MANY_ROUND);
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136 n++;
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137
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138 Widget parent = ct->prepare(ct, args, &n, FALSE);
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139 Widget button = XmCreateToggleButton(parent, "radiobutton", args, n);
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140 ct->add(ct, button);
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141
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142 if(rgroup) {
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143 RadioButtonGroup *group;
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144 if(rgroup->obj) {
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145 group = rgroup->obj;
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146 group->buttons = ucx_list_append(group->buttons, button);
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147 group->ref++;
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148 } else {
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149 group = malloc(sizeof(RadioButtonGroup));
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150 group->buttons = ucx_list_append(NULL, button);
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151 group->current = button;
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152 // this is the first button in the radiobutton group
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153 // so we should enable it
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154 Arg arg;
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155 XtSetArg(arg, XmNset, TRUE);
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156 XtSetValues(button, &arg, 1);
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157 rgroup->obj = group;
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158
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159 group->current = button;
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160 }
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161
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162 RadioEventData *event = malloc(sizeof(RadioEventData));
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163 event->obj = obj;
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164 event->callback = NULL;
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165 event->userdata = NULL;
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166 event->group = group;
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167 XtAddCallback(
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168 button,
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169 XmNvalueChangedCallback,
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170 (XtCallbackProc)radio_callback,
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171 event);
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172
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173 rgroup->get = ui_radiobutton_get;
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174 rgroup->set = ui_radiobutton_set;
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175 }
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176
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177 XtManageChild(button);
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178 return button;
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179 }
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180
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181 int ui_radiobutton_get(UiInteger *value) {
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182 RadioButtonGroup *group = value->obj;
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183
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184 int i = ucx_list_find(group->buttons, group->current, NULL, NULL);
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185 if (i >= 0) {
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186 value->value = i;
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187 return i;
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188 } else {
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189 return 0;
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190 }
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191 }
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192
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193 void ui_radiobutton_set(UiInteger *value, int i) {
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194 RadioButtonGroup *group = value->obj;
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195 Arg arg;
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196
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197 XtSetArg(arg, XmNset, FALSE);
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198 XtSetValues(group->current, &arg, 1);
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199
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200 UcxList *elm = ucx_list_get(group->buttons, i);
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201 if(elm) {
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202 Widget button = elm->data;
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203 XtSetArg(arg, XmNset, TRUE);
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204 XtSetValues(button, &arg, 1);
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205 group->current = button;
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206 }
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207 }

mercurial