ui/winui/button.cpp

Sun, 01 Oct 2023 16:39:03 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 01 Oct 2023 16:39:03 +0200
branch
newapi
changeset 189
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parent 188
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child 191
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permissions
-rw-r--r--

add onchange event for toggle buttons (WinUI3)

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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 2023 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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29
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30 #include "button.h"
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31
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32 #include "util.h"
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33 #include "container.h"
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34
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35 #include "../common/object.h"
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36 #include "../common/context.h"
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37
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38 using namespace winrt;
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39 using namespace Microsoft::UI::Xaml;
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40 using namespace Microsoft::UI::Xaml::Controls;
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41 using namespace Windows::UI::Xaml::Interop;
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42 using namespace winrt::Windows::Foundation;
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43 using namespace winrt::Microsoft::UI::Xaml::Controls::Primitives;
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45
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46
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47 static void set_button_label(ButtonBase button, const char* label, const char* stockid) {
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48 if (label) {
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49 wchar_t* wlabel = str2wstr(label, nullptr);
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50 button.Content(box_value(wlabel));
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51 free(wlabel);
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52 }
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53 // TODO: stockid
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54 }
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55
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56
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57 UIWIDGET ui_button_create(UiObject* obj, UiButtonArgs args) {
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58 UiObject* current = uic_current_obj(obj);
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59
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60 // create button with label
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61 Button button = Button();
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62 set_button_label(button, args.label, args.stockid);
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63
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64 // create toolkit wrapper object and register destructor
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65 UIElement elm = button;
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66 UiWidget* widget = new UiWidget(elm);
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67 ui_context_add_widget_destructor(current->ctx, widget);
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68
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69 // register callback
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70 if (args.onclick) {
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71 widget->obj = obj;
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72 widget->event_func = (ui_eventfunc)args.onclick;
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73 widget->event_data = args.onclickdata;
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74 button.Click([widget](IInspectable const& sender, RoutedEventArgs) {
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75 ui_callback cb = (ui_callback)widget->event_func;
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76
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77 UiEvent evt;
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78 evt.obj = (UiObject*)widget->obj;
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79 evt.window = evt.obj->window;
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80 evt.document = evt.obj->ctx->document;
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81 evt.eventdata = nullptr;
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82 evt.intval = 0;
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83 cb(&evt, widget->event_data);
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84 });
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85 }
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86
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87 // add button to current container
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88 UI_APPLY_LAYOUT1(current, args);
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89
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90 current->container->Add(button, false);
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91
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92 return widget;
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93 }
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95
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96 static void togglebutton_register_checked_observers(ToggleButton button, UiObject* obj, UiVar* var) {
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97 button.Checked([button, obj, var](IInspectable const& sender, RoutedEventArgs) {
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98 UiInteger* i = (UiInteger*)var->value;
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99 UiEvent evt = ui_create_int_event(obj, i->get(i));
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100 ui_notify_evt(i->observers, &evt);
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101 });
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102 }
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103
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104 static void togglebutton_register_unchecked_observers(ToggleButton button, UiObject* obj, UiVar* var) {
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105 button.Unchecked([button, obj, var](IInspectable const& sender, RoutedEventArgs) {
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106 UiInteger* i = (UiInteger*)var->value;
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107 UiEvent evt = ui_create_int_event(obj, i->get(i));
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108 ui_notify_evt(i->observers, &evt);
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109 });
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110 }
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111
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112 static void togglebutton_register_callback(ToggleButton button, UiObject *obj, UiToggleArgs& args) {
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113 ui_callback callback = args.onchange;
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114 void* cbdata = args.onchangedata;
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115 if (callback) {
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116 button.Checked([button, obj, callback, cbdata](IInspectable const& sender, RoutedEventArgs) {
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117 UiEvent evt = ui_create_int_event(obj, true);
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118 callback(&evt, cbdata);
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119 });
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120 button.Unchecked([button, obj, callback, cbdata](IInspectable const& sender, RoutedEventArgs) {
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121 UiEvent evt = ui_create_int_event(obj, false);
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122 callback(&evt, cbdata);
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123 });
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124 }
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125 }
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126
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127 static UIWIDGET create_togglebutton(UiObject *obj, ToggleButton button, UiToggleArgs args) {
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128 UiObject* current = uic_current_obj(obj);
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129
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130 // set label
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131 set_button_label(button, args.label, args.stockid);
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132 togglebutton_register_callback(button, obj, args);
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133
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134 // create toolkit wrapper object and register destructor
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135 UIElement elm = button;
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136 UiWidget* widget = new UiWidget(elm);
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137 ui_context_add_widget_destructor(current->ctx, widget);
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138
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139 // bind variable
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140 UiVar* var = nullptr;
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141 if (args.value) {
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142 var = uic_create_value_var(current->ctx, args.value);
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143 }
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144 else if (args.varname) {
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145 var = uic_create_var(obj->ctx, args.varname, UI_VAR_INTEGER);
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146 }
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147 if (var) {
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148 UiInteger* value = (UiInteger*)var->value;
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149 value->obj = widget;
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150 value->get = ui_toggle_button_get;
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151 value->set = ui_toggle_button_set;
189
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152
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153 // listener for notifying observers
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154 togglebutton_register_checked_observers(button, obj, var);
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155 togglebutton_register_unchecked_observers(button, obj, var);
187
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156 }
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157
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158 // add button to current container
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159 UI_APPLY_LAYOUT1(current, args);
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160
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161 current->container->Add(button, false);
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162
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163 return widget;
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164 }
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165
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166 UIWIDGET ui_togglebutton_create(UiObject* obj, UiToggleArgs args) {
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167 ToggleButton button = ToggleButton();
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168 return create_togglebutton(obj, button, args);
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169 }
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170
186
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171 UIWIDGET ui_checkbox_create(UiObject* obj, UiToggleArgs args) {
187
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172 CheckBox button = CheckBox();
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173 return create_togglebutton(obj, button, args);
186
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174 }
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175
188
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176 UIWIDGET ui_radiobutton_create(UiObject* obj, UiToggleArgs args) {
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177 RadioButton button = RadioButton();
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178
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179 UiObject* current = uic_current_obj(obj);
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180
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181 // set label
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182 set_button_label(button, args.label, args.stockid);
189
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183 togglebutton_register_callback(button, obj, args);
188
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184
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185 // create toolkit wrapper object and register destructor
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186 UIElement elm = button;
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187 UiWidget* widget = new UiWidget(elm);
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188 ui_context_add_widget_destructor(current->ctx, widget);
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189
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190 UiVar* var = nullptr;
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191 if (args.value) {
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192 var = uic_create_value_var(current->ctx, args.value);
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193 }
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194 else if (args.varname) {
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195 var = uic_create_var(obj->ctx, args.varname, UI_VAR_INTEGER);
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196 }
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197
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198 // bind radio button to the value
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199 if (var) {
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200 UiInteger* value = (UiInteger*)var->value;
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201
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202 // store a list of radio buttons in the value
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203 CxList* radioButtons = (CxList*) (value->obj ? value->obj : cxLinkedListCreate(current->ctx->allocator, NULL, CX_STORE_POINTERS));
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204 // get or create the group name
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205 static int groupCount = 0;
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206 winrt::hstring groupName;
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207 if (radioButtons->size == 0) {
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208 groupName = winrt::to_hstring(groupCount++);
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209 } else {
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210 UiWidget* firstButtonWidget = (UiWidget*)cxListAt(radioButtons, 0);
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211 RadioButton firstRadioButton = firstButtonWidget->uielement.as<RadioButton>();
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212 groupName = firstRadioButton.GroupName();
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213 }
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214
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215 // set the group name for the new radiobutton
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216 cxListAdd(radioButtons, widget);
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217 button.GroupName(groupName);
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218
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219 value->obj = radioButtons;
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220 value->get = ui_radio_button_get;
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221 value->set = ui_radio_button_set;
189
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222
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223 // listener for notifying observers (only checked, not unchecked)
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224 togglebutton_register_checked_observers(button, obj, var);
188
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225 }
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226
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227 // add button to current container
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228 UI_APPLY_LAYOUT1(current, args);
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229
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230 current->container->Add(button, false);
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231
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232 return widget;
186
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233 }
187
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234
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235
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236 int64_t ui_toggle_button_get(UiInteger* integer) {
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237 UiWidget* widget = (UiWidget*)integer->obj;
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238 ToggleButton toggleButton = widget->uielement.as<ToggleButton>();
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239 int val = toggleButton.IsChecked().GetBoolean();
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240 integer->value = val;
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241 return val;
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242 }
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243
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244 void ui_toggle_button_set(UiInteger* integer, int64_t value) {
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245 UiWidget* widget = (UiWidget*)integer->obj;
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246 ToggleButton toggleButton = widget->uielement.as<ToggleButton>();
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247 toggleButton.IsChecked((bool)value);
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248 integer->value = value;
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249 }
188
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250
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251 extern "C" int64_t ui_radio_button_get(UiInteger * integer) {
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252 CxList* list = (CxList*)integer->obj;
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253 CxIterator i = cxListIterator(list);
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254 int selection = -1;
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255 cx_foreach(UiWidget*, widget, i) {
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256 ToggleButton button = widget->uielement.as<ToggleButton>();
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257 if (button.IsChecked().GetBoolean()) {
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258 selection = i.index;
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259 break;
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260 }
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261 }
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262 integer->value = selection;
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263 return selection;
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264 }
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265
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266 extern "C" void ui_radio_button_set(UiInteger * integer, int64_t value) {
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267 CxList* list = (CxList*)integer->obj;
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268 UiWidget* widget = (UiWidget*)cxListAt(list, value);
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269 if (widget) {
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270 ToggleButton button = widget->uielement.as<ToggleButton>();
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271 button.IsChecked(true);
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272 integer->value = value;
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273 }
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274 }

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