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annotate Chronosv2/source/Presentation/Windows/DesktopSerializer.cs @ 10:443821e55f06

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author stevenh7776 stevenhollidge@hotmail.com
date Tue, 21 Feb 2012 17:25:44 +0700
parents
children 09d18d6e5f40
rev   line source
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1 /*
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2 The MIT License
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3
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4 Copyright (c) 2009-2010. Carlos Guzmán Álvarez. http://chronoswpf.codeplex.com/
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5
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6 Permission is hereby granted, free of charge, to any person obtaining a copy
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7 of this software and associated documentation files (the "Software"), to deal
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8 in the Software without restriction, including without limitation the rights
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9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 copies of the Software, and to permit persons to whom the Software is
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11 furnished to do so, subject to the following conditions:
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12
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13 The above copyright notice and this permission notice shall be included in
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14 all copies or substantial portions of the Software.
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15
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16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 THE SOFTWARE.
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23 */
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24
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25 using System;
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26 using System.Collections.Generic;
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27 using System.Globalization;
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28 using System.IO;
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29 using System.Linq;
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30 using System.Windows;
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31 using System.Windows.Controls;
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32 using System.Windows.Markup;
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33 using System.Xml;
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34 using System.Xml.Linq;
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35 using Chronos.Extensions.Windows;
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36 using Chronos.Presentation.Core.Services;
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37 using Chronos.Presentation.Core.Windows;
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38 using Chronos.Presentation.Windows.Controls;
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39 using nRoute.ViewServices;
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40
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41 namespace Chronos.Presentation.Windows
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42 {
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43 /// <summary>
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44 /// Desktop serializer for <see cref="E:Chronos.Presentation.Windows.Elements.WidgetElement"/> and
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45 /// <see cref="E:Chronos.Presentation.Windows.Elements.ShortcutElement"/> contents.
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46 /// </summary>
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47 internal static class DesktopSerializer
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48 {
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49 #region · Save/Load Methods ·
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50
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51 /// <summary>
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52 /// Loads the contents of the specified filename in the given <see cref="Desktop"/> instance.
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53 /// </summary>
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54 /// <param name="desktop">The desktop.</param>
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55 /// <param name="filename">The filename.</param>
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56 public static void Load(Desktop desktop, string filename)
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57 {
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58 XElement root = LoadFromFile(filename);
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59
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60 if (root == null)
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61 {
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62 return;
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63 }
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64
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65 // Widget Deserialization
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66 IEnumerable<XElement> widgetsXML = root.Elements("WidgetElements").Elements("WidgetElement");
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67
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68 foreach (XElement widgetXML in widgetsXML)
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69 {
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70 Guid id = new Guid(widgetXML.Element("Id").Value);
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71 WidgetElement item = DeserializeWidget(widgetXML, id, 0, 0);
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72
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73 desktop.AddElement(item, item.GetPosition());
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74 }
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75
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76 // Shortcut Deserialization
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77 IEnumerable<XElement> shortcutsXML = root.Elements("ShortcutElements").Elements("ShortcutElement");
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78 int ti = 0;
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79
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80 foreach (XElement shortcutXML in shortcutsXML)
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81 {
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82 Guid id = new Guid(shortcutXML.Element("Id").Value);
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83 ShortcutElement item = DeserializeShortcut(shortcutXML, id, 0, 0);
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84
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85 item.TabIndex = ++ti;
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86
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87 desktop.AddElement(item, item.GetPosition());
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88 }
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89 }
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90
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91 /// <summary>
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92 /// Saves the contents of the specified <see cref="Desktop"/> instance in the given file.
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93 /// </summary>
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94 /// <param name="desktop">The desktop.</param>
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95 /// <param name="filename">The filename.</param>
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96 public static void Save(Desktop desktop, string filename)
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97 {
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98 IEnumerable<WidgetElement> widgets = desktop.Children.OfType<WidgetElement>();
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99 IEnumerable<ShortcutElement> shortcuts = desktop.Children.OfType<ShortcutElement>();
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100
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101 XElement widgetsItemsXML = SerializeWidgets(widgets);
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102 XElement shortcutsItemsXML = SerializeShortcuts(shortcuts);
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103
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104 XElement root = new XElement("Root");
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105
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106 root.Add(widgetsItemsXML);
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107 root.Add(shortcutsItemsXML);
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108
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109 SaveFile(filename, root);
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110 }
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111
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112 #endregion
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113
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114 #region · Serialization Methods ·
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115
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116 private static XElement LoadFromFile(string filename)
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117 {
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118 try
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119 {
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120 if (File.Exists(filename))
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121 {
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122 return XElement.Load(filename);
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123 }
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124 }
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125 catch (Exception)
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126 {
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127 IShowMessageViewService showMessageService = ViewServiceLocator.GetViewService<IShowMessageViewService>();
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128
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129 showMessageService.ButtonSetup = DialogButton.Ok;
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130 showMessageService.Caption = "Chronos - Error en la carga del escritorio";
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131 showMessageService.Text = "No ha sido posible realizar la carga del escritorio.";
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132
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133 showMessageService.ShowMessage();
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134 }
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135
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136 return null;
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137 }
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138
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139 private static void SaveFile(string filename, XElement xElement)
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140 {
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141 try
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142 {
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143 xElement.Save(filename);
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144 }
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145 catch (Exception)
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146 {
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147 IShowMessageViewService showMessageService = ViewServiceLocator.GetViewService<IShowMessageViewService>();
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148
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149 showMessageService.ButtonSetup = DialogButton.Ok;
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150 showMessageService.Caption = "Chronos - Error al guardar el estado del escritorio";
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151 showMessageService.Text = "No ha sido posible al guardar el estado del escritorio.";
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152
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153 showMessageService.ShowMessage();
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154 }
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155 }
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156
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157 private static XElement SerializeWidgets(IEnumerable<WidgetElement> widgets)
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158 {
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159 XElement serializedItems = new XElement
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160 ("WidgetElements",
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161 from item in widgets
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162 select new XElement
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163 ("WidgetElement",
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164 new XElement("Type", item.GetType().AssemblyQualifiedName),
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165 new XElement("Left", Canvas.GetLeft(item)),
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166 new XElement("Top", Canvas.GetTop(item)),
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167 new XElement("Width", item.Width),
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168 new XElement("Height", item.RealHeight),
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169 new XElement("Id", item.Id),
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170 new XElement("zIndex", Canvas.GetZIndex(item)),
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171 new XElement("WidgetState", item.WidgetState),
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172 new XElement("ShowMinimizeButton", item.ShowMinimizeButton)
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173 )
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174 );
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175
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176 return serializedItems;
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177 }
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178
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179 private static WidgetElement DeserializeWidget(XElement itemXML, Guid id, double offsetX, double offsetY)
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180 {
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181 WidgetElement item = (WidgetElement)Activator.CreateInstance(Type.GetType(itemXML.Element("Type").Value));
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182
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183 item.ShowMinimizeButton = Boolean.Parse(itemXML.Element("ShowMinimizeButton").Value);
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184 item.StartupLocation = StartupPosition.Manual;
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185
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186 item.Move(Double.Parse(itemXML.Element("Left").Value, CultureInfo.InvariantCulture) + offsetX,
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187 Double.Parse(itemXML.Element("Top").Value, CultureInfo.InvariantCulture) + offsetY);
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188 item.SetZIndex(Int32.Parse(itemXML.Element("zIndex").Value));
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189
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190 WindowState widgetState = (WindowState)Enum.Parse(typeof(WindowState), itemXML.Element("WidgetState").Value as String);
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191
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192 item.Width = Double.Parse(itemXML.Element("Width").Value, CultureInfo.InvariantCulture);
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193 item.Height = Double.Parse(itemXML.Element("Height").Value, CultureInfo.InvariantCulture);
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194
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195 if (widgetState == WindowState.Minimized)
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196 {
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197 item.WidgetState = widgetState;
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198 }
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199
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200 return item;
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201 }
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202
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203 private static XElement SerializeShortcuts(IEnumerable<ShortcutElement> shortcuts)
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204 {
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205 XElement serializedItems = new XElement("ShortcutElements",
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206 from item in shortcuts
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207 let contentXaml = XamlWriter.Save(((ShortcutElement)item).DataContext)
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208 select new XElement("ShortcutElement",
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209 new XElement("Left", Canvas.GetLeft(item)),
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210 new XElement("Top", Canvas.GetTop(item)),
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211 new XElement("Width", item.Width),
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212 new XElement("Height", item.Height),
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213 new XElement("Id", item.Id),
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214 new XElement("zIndex", Canvas.GetZIndex(item)),
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215 new XElement("DataContext", contentXaml)
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216 ));
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217
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218 return serializedItems;
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219 }
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220
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221 private static ShortcutElement DeserializeShortcut(XElement itemXML, Guid id, double offsetX, double offsetY)
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222 {
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223 ShortcutElement item = new ShortcutElement
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224 {
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225 DataContext = XamlReader.Load(XmlReader.Create(new StringReader(itemXML.Element("DataContext").Value))),
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226 Width = Double.Parse(itemXML.Element("Width").Value, CultureInfo.InvariantCulture),
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227 Height = Double.Parse(itemXML.Element("Height").Value, CultureInfo.InvariantCulture)
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228 };
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229
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230 item.StartupLocation = StartupPosition.Manual;
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231 item.Move(Double.Parse(itemXML.Element("Left").Value, CultureInfo.InvariantCulture) + offsetX,
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232 Double.Parse(itemXML.Element("Top").Value, CultureInfo.InvariantCulture) + offsetY);
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233 item.SetZIndex(Int32.Parse(itemXML.Element("zIndex").Value));
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234
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235 return item;
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236 }
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237
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238 #endregion
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239 }
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240 }