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annotate mde/gui/widget/createWidget.d @ 112:fe061009029d

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EnumContent; log level can be selected from a popup list. New EnumContent, with code to load translations in Items. Editable as an AStringContent. Hacked OptionsMisc to use an EnumContent. Implemented a EnumContentWidget providing a pop-up list to select from (still needs improving). Moved IContent to its own module. ContentExceptions thrown via WDCCheck now. Fixed a small bug with reloading translations.
author Diggory Hardy <diggory.hardy@gmail.com>
date Sat, 13 Dec 2008 12:54:43 +0000
parents c9fc2d303178
children 9824bee909fd
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1 /* LICENSE BLOCK
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2 Part of mde: a Modular D game-oriented Engine
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3 Copyright © 2007-2008 Diggory Hardy
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4
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5 This program is free software: you can redistribute it and/or modify it under the terms
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6 of the GNU General Public License as published by the Free Software Foundation, either
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7 version 2 of the License, or (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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11 See the GNU General Public License for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16 /** This module contains code to create a widget based on an enumeration value passed at runtime.
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17 *
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18 * It could be a part of the WidgetLoader.makeWidget function, but having it here makes things
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19 * tidier. */
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20 module mde.gui.widget.createWidget;
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21
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22 import mde.gui.widget.Ifaces;
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23 import mde.gui.exception : WidgetDataException;
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24 import mde.content.IContent;
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25
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26 // Widgets to create:
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27 import mde.gui.widget.layout;
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28 import mde.gui.widget.miscWidgets;
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29 import mde.gui.widget.TextWidget;
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30 import mde.gui.widget.miscContent;
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31 import mde.gui.widget.textContent;
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32 import mde.gui.widget.Floating;
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33 import mde.gui.widget.Popup;
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34 import tango.util.log.Log : Log, Logger;
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36 private Logger logger;
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37 static this () {
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38 logger = Log.getLogger ("mde.gui.widget.createWidget");
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39 }
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40
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41 /** Create a widget.
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42 *
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43 * Usually called by the widget manager's makeWidget function.
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44 *
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45 * Widget created of type data.ints[0] (see enum WIDGET_TYPES), with one of the following CTORs:
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46 * ---
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47 * this (IWidgetManager mgr, WidgetData data);
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48 * // Called if (data.ints[0] & WIDGET_TYPES.TAKES_CONTENT):
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49 * this (IWidgetManager mgr, WidgetData data, IContent content);
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50 * ---
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51 *************************************************************************************************/
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52 IChildWidget createWidget (IWidgetManager mgr, widgetID id, WidgetData data, IContent content)
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53 in {
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54 assert (mgr !is null, "createWidget: mgr is null");
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55 } body {
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56 if (data.ints.length < 1) {
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57 logger.error ("No int data; creating a debug widget");
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58 data.ints = [WIDGET_TYPE.Debug];
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59 }
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60 int type = data.ints[0]; // type is first element of data
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62 try {
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63 //pragma (msg, binarySearch ("type", WIDGETS));
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64 mixin (binarySearch ("type", WIDGETS)); // creates widget by type: new XWidget (mgr, data [, parent]);
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65 // Not returned a new widget or thrown:
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66 logger.error ("Bad widget type: {}; creating a debug widget instead",type);
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67 } catch (Exception e) {
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68 logger.error ("Error creating widget: {}; creating a debug widget instead.", e.msg);
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69 }
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71 return new DebugWidget (mgr, id, data);
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72 }
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74 /+ for converting to a char[] name (unused)
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75 static this() {
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76 WIDGET_NAMES = [
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77 FixedBlank : "FixedBlank",
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78 SizableBlank : "SizableBlank",
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79 Button : "Button",
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80 GridLayout : "GridLayout"
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81 ];
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82 }+/
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83
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84 private:
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85 /// Widget types.
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86 enum WIDGET_TYPE : int {
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87 FUNCTION = 0x2000, // Function called instead of widget created (no "Widget" appended to fct name)
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88 TAKES_CONTENT = 0x4000, // Flag indicates widget's this should be passed an IContent reference.
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89 PARENT = 0x8000, // widget can have children; not used by code (except in data files)
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91 // Use widget names rather than usual capitals convention
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92 Unnamed = 0x0, // Only for use by widgets not created with createWidget
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93
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94 // blank: 0x1
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95 FixedBlank = 0x1,
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96 SizableBlank = 0x2,
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97 Debug = 0xF,
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98
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99 // buttons: 0x10
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100 Button = 0x10,
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101 PopupButton = TAKES_CONTENT | PARENT | 0x11,
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102
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103 // labels: 0x20
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104 ContentLabel = TAKES_CONTENT | 0x20,
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105 TextLabel = 0x21,
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106
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107 // content functions: 0x30
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108 editContent = FUNCTION | TAKES_CONTENT | 0x30,
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109 addContent = FUNCTION | 0x31,
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111 // content widgets: 0x40
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112 DisplayContent = TAKES_CONTENT | 0x40,
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113 BoolContent = TAKES_CONTENT | 0x41,
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114 AStringContent = TAKES_CONTENT | 0x42,
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115 ButtonContent = TAKES_CONTENT | 0x43,
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116 EnumContent = TAKES_CONTENT | 0x44,
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117
99
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118 GridLayout = TAKES_CONTENT | PARENT | 0x100,
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119 ContentList = TAKES_CONTENT | PARENT | 0x110,
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120
99
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121 FloatingArea = PARENT | 0x200,
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122 }
37
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123
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124 //const char[][int] WIDGET_NAMES;
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125
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126 // Only used for binarySearch algorithm generation; must be ordered by numerical values.
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127 const char[][] WIDGETS = [
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128 "FixedBlank",
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129 "SizableBlank",
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130 "Debug",
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131 "Button",
103
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132 "TextLabel",
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133 "addContent",
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134 "ContentLabel",
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135 "DisplayContent",
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136 "BoolContent",
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137 "AStringContent",
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138 "ButtonContent",
112
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139 "EnumContent",
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140 "editContent",
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141 "FloatingArea",
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142 "PopupButton",
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143 "GridLayout",
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144 "ContentList"];
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145
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146 /* Generates a binary search algorithm. */
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147 char[] binarySearch (char[] var, char[][] consts) {
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148 if (consts.length > 3) {
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149 return "if (" ~ var ~ " <= WIDGET_TYPE." ~ consts[$/2 - 1] ~ ") {\n" ~
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150 binarySearch (var, consts[0 .. $/2]) ~
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151 "} else {\n" ~
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152 binarySearch (var, consts[$/2 .. $]) ~
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153 "}\n";
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154 } else {
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155 char[] ret;
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156 foreach (c; consts) {
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157 ret ~= "if (" ~ var ~ " == WIDGET_TYPE." ~ c ~ ") {\n" ~
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158 " debug (mdeWidgets) logger.trace (\"Creating new "~c~"Widget.\");\n" ~
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159 " static if (WIDGET_TYPE."~c~" & WIDGET_TYPE.FUNCTION)\n" ~
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160 " return " ~ c ~ " (mgr, id, data, content);\n" ~
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161 " else static if (WIDGET_TYPE."~c~" & WIDGET_TYPE.TAKES_CONTENT)\n" ~
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162 " return new " ~ c ~ "Widget (mgr, id, data, content);\n" ~
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163 " else\n" ~
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164 " return new " ~ c ~ "Widget (mgr, id, data);\n" ~
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165 "} else ";
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166 }
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167 ret = ret[0..$-6] ~ '\n'; // remove last else
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168 return ret;
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169 }
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170 }
90
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171
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172 debug { // check items in WIDGETS are listed in order
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173 char[] WIDGETS_check () {
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174 char[] ret;
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175 for (int i = WIDGETS.length-2; i > 0; --i) {
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176 ret ~= "WIDGET_TYPE."~WIDGETS[i] ~" >= WIDGET_TYPE."~ WIDGETS[i+1];
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177 if (i>1) ret ~= " || ";
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178 }
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179 return ret;
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180 }
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181 mixin ("static if ("~WIDGETS_check~")
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182 static assert (false, \"WIDGETS is not in order!\");");
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183 }