1 | // --------------------------------------------------------------------------------------------------------------------
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2 | // <copyright file="KinectSensorChooserUIViewModel.cs" company="Microsoft">
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3 | // Copyright (c) Microsoft Corporation. All rights reserved.
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4 | // </copyright>
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5 | // --------------------------------------------------------------------------------------------------------------------
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6 |
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7 | namespace Microsoft.Kinect.Toolkit
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8 | {
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9 | using System;
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10 | using System.Diagnostics.CodeAnalysis;
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11 | using System.Windows;
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12 | using System.Windows.Data;
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13 | using System.Windows.Input;
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14 | using Microsoft.Kinect.Toolkit.Properties;
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15 |
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16 | /// <summary>
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17 | /// View model for the KinectSensorChooser.
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18 | /// </summary>
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19 | public class KinectSensorChooserUIViewModel : DependencyObject
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20 | {
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21 | [SuppressMessage("StyleCop.CSharp.OrderingRules", "SA1202:ElementsMustBeOrderedByAccess", Justification = "ReadOnlyDependencyProperty requires private static field to be initialized prior to the public static field")]
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22 | private static readonly DependencyPropertyKey MessagePropertyKey = DependencyProperty.RegisterReadOnly(
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23 | "Message", typeof(string), typeof(KinectSensorChooserUIViewModel), new PropertyMetadata(string.Empty));
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24 |
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25 | [SuppressMessage("StyleCop.CSharp.OrderingRules", "SA1202:ElementsMustBeOrderedByAccess", Justification = "ReadOnlyDependencyProperty requires private static field to be initialized prior to the public static field")]
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26 | private static readonly DependencyPropertyKey MoreInformationPropertyKey = DependencyProperty.RegisterReadOnly(
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27 | "MoreInformation", typeof(string), typeof(KinectSensorChooserUIViewModel), new PropertyMetadata(string.Empty));
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28 |
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29 | [SuppressMessage("StyleCop.CSharp.OrderingRules", "SA1202:ElementsMustBeOrderedByAccess", Justification = "ReadOnlyDependencyProperty requires private static field to be initialized prior to the public static field")]
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30 | private static readonly DependencyPropertyKey MoreInformationUriPropertyKey =
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31 | DependencyProperty.RegisterReadOnly(
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32 | "MoreInformationUri", typeof(Uri), typeof(KinectSensorChooserUIViewModel), new PropertyMetadata(null));
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33 |
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34 | [SuppressMessage("StyleCop.CSharp.OrderingRules", "SA1202:ElementsMustBeOrderedByAccess", Justification = "ReadOnlyDependencyProperty requires private static field to be initialized prior to the public static field")]
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35 | private static readonly DependencyPropertyKey MoreInformationVisibilityPropertyKey =
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36 | DependencyProperty.RegisterReadOnly(
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37 | "MoreInformationVisibility",
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38 | typeof(Visibility),
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39 | typeof(KinectSensorChooserUIViewModel),
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40 | new PropertyMetadata(Visibility.Collapsed));
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41 |
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42 | /// <summary>
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43 | /// Set this to true when the application is listining for audio input from the sensor.
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44 | /// UI will show a microphone icon.
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45 | /// </summary>
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46 | public static readonly DependencyProperty IsListeningProperty = DependencyProperty.Register(
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47 | "IsListening",
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48 | typeof(bool),
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49 | typeof(KinectSensorChooserUIViewModel),
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50 | new PropertyMetadata(false, (o, args) => ((KinectSensorChooserUIViewModel)o).IsListeningChanged()));
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51 |
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52 | /// <summary>
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53 | /// The KinectSensorChooser whose status we are displaying.
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54 | /// </summary>
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55 | public static readonly DependencyProperty KinectSensorChooserProperty = DependencyProperty.Register(
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56 | "KinectSensorChooser",
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57 | typeof(KinectSensorChooser),
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58 | typeof(KinectSensorChooserUIViewModel),
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59 | new PropertyMetadata(
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60 | null,
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61 | (o, args) => ((KinectSensorChooserUIViewModel)o).OnKinectKinectSensorChooserChanged((KinectSensorChooser)args.NewValue)));
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62 |
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63 | /// <summary>
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64 | /// The current ChooserStatus of our KinectSensorChooser
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65 | /// </summary>
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66 | public static readonly DependencyProperty StatusProperty = DependencyProperty.Register(
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67 | "Status",
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68 | typeof(ChooserStatus),
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69 | typeof(KinectSensorChooserUIViewModel),
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70 | new PropertyMetadata(ChooserStatus.None, (o, args) => ((KinectSensorChooserUIViewModel)o).OnStatusChanged()));
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71 |
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72 | /// <summary>
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73 | /// The state we want the VisualStateManager in the UI to be in.
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74 | /// </summary>
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75 | public static readonly DependencyProperty VisualStateProperty = DependencyProperty.Register(
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76 | "VisualState", typeof(string), typeof(KinectSensorChooserUIViewModel), new PropertyMetadata(null));
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77 |
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78 | /// <summary>
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79 | /// The short message to display.
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80 | /// </summary>
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81 | public static readonly DependencyProperty MessageProperty = MessagePropertyKey.DependencyProperty;
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82 |
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83 | /// <summary>
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84 | /// The more descriptive message to display.
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85 | /// </summary>
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86 | public static readonly DependencyProperty MoreInformationProperty = MoreInformationPropertyKey.DependencyProperty;
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87 |
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88 | /// <summary>
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89 | /// Uri for more information on the state we are in.
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90 | /// </summary>
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91 | public static readonly DependencyProperty MoreInformationUriProperty = MoreInformationUriPropertyKey.DependencyProperty;
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92 |
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93 | /// <summary>
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94 | /// The visibility we want for the MoreInformation Uri.
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95 | /// </summary>
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96 | public static readonly DependencyProperty MoreInformationVisibilityProperty = MoreInformationVisibilityPropertyKey.DependencyProperty;
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97 |
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98 | private RelayCommand retryCommand;
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99 |
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100 | /// <summary>
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101 | /// Set this to true when the application is listining for audio input from the sensor.
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102 | /// UI will show a microphone icon.
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103 | /// </summary>
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104 | public bool IsListening
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105 | {
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106 | get
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107 | {
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108 | return (bool)this.GetValue(IsListeningProperty);
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109 | }
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110 |
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111 | set
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112 | {
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113 | this.SetValue(IsListeningProperty, value);
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114 | }
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115 | }
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116 |
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117 | /// <summary>
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118 | /// The KinectSensorChooser whose status we are displaying.
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119 | /// </summary>
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120 | public KinectSensorChooser KinectSensorChooser
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121 | {
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122 | get
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123 | {
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124 | return (KinectSensorChooser)this.GetValue(KinectSensorChooserProperty);
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125 | }
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126 |
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127 | set
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128 | {
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129 | this.SetValue(KinectSensorChooserProperty, value);
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130 | }
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131 | }
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132 |
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133 | /// <summary>
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134 | /// The short message to display.
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135 | /// </summary>
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136 | public string Message
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137 | {
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138 | get
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139 | {
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140 | return (string)this.GetValue(MessageProperty);
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141 | }
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142 |
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143 | private set
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144 | {
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145 | this.SetValue(MessagePropertyKey, value);
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146 | }
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147 | }
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148 |
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149 | /// <summary>
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150 | /// The more descriptive message to display.
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151 | /// </summary>
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152 | public string MoreInformation
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153 | {
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154 | get
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155 | {
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156 | return (string)this.GetValue(MoreInformationProperty);
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157 | }
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158 |
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159 | private set
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160 | {
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161 | this.SetValue(MoreInformationPropertyKey, value);
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162 | }
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163 | }
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164 |
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165 | /// <summary>
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166 | /// Uri for more information on the state we are in.
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167 | /// </summary>
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168 | public Uri MoreInformationUri
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169 | {
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170 | get
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171 | {
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172 | return (Uri)this.GetValue(MoreInformationUriProperty);
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173 | }
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174 |
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175 | private set
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176 | {
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177 | this.SetValue(MoreInformationUriPropertyKey, value);
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178 | }
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179 | }
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180 |
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181 | /// <summary>
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182 | /// The visibility we want for the MoreInformation Uri.
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183 | /// </summary>
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184 | public Visibility MoreInformationVisibility
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185 | {
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186 | get
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187 | {
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188 | return (Visibility)this.GetValue(MoreInformationVisibilityProperty);
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189 | }
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190 |
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191 | private set
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192 | {
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193 | this.SetValue(MoreInformationVisibilityPropertyKey, value);
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194 | }
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195 | }
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196 |
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197 | /// <summary>
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198 | /// Command to retry getting a sensor.
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199 | /// </summary>
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200 | public ICommand RetryCommand
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201 | {
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202 | get
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203 | {
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204 | if (this.retryCommand == null)
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205 | {
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206 | this.retryCommand = new RelayCommand(this.Retry, this.CanRetry);
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207 | }
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208 |
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209 | return this.retryCommand;
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210 | }
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211 | }
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212 |
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213 | /// <summary>
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214 | /// The current ChooserStatus of our KinectSensorChooser
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215 | /// </summary>
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216 | public ChooserStatus Status
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217 | {
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218 | get
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219 | {
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220 | return (ChooserStatus)this.GetValue(StatusProperty);
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221 | }
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222 |
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223 | set
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224 | {
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225 | this.SetValue(StatusProperty, value);
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226 | }
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227 | }
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228 |
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229 | /// <summary>
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230 | /// The state we want the VisualStateManager in the UI to be in.
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231 | /// </summary>
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232 | public string VisualState
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233 | {
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234 | get
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235 | {
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236 | return (string)this.GetValue(VisualStateProperty);
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237 | }
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238 |
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239 | set
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240 | {
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241 | this.SetValue(VisualStateProperty, value);
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242 | }
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243 | }
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244 |
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245 | /// <summary>
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246 | /// Determines if the retry command is available
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247 | /// </summary>
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248 | /// <returns>true if retry is valid, false otherwise</returns>
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249 | private bool CanRetry()
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250 | {
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251 | // You can retry if another app was using the sensor the last
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252 | // time we tried. You can also retry if the only problem was
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253 | // that there were no sensors available since this app may
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254 | // have released one.
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255 | return (0 != (this.Status & ChooserStatus.SensorConflict)) || (this.Status == ChooserStatus.NoAvailableSensors);
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256 | }
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257 |
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258 | private void IsListeningChanged()
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259 | {
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260 | this.UpdateState();
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261 | }
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262 |
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263 | private void OnKinectKinectSensorChooserChanged(KinectSensorChooser newValue)
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264 | {
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265 | if (newValue != null)
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266 | {
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267 | var statusBinding = new Binding("Status") { Source = newValue };
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268 | BindingOperations.SetBinding(this, StatusProperty, statusBinding);
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269 | }
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270 | else
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271 | {
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272 | BindingOperations.ClearBinding(this, StatusProperty);
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273 | }
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274 | }
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275 |
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276 | private void OnStatusChanged()
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277 | {
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278 | this.UpdateState();
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279 | }
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280 |
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281 | private void Retry()
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282 | {
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283 | if (this.KinectSensorChooser != null)
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284 | {
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285 | this.KinectSensorChooser.TryResolveConflict();
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286 | }
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287 | }
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288 |
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289 | private void UpdateState()
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290 | {
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291 | string newVisualState;
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292 | string message;
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293 | string moreInfo = null;
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294 | Uri moreInfoUri = null;
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295 |
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296 | if ((this.Status & ChooserStatus.SensorStarted) != 0)
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297 | {
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298 | if (this.IsListening)
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299 | {
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300 | newVisualState = "AllSetListening";
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301 | message = Resources.MessageAllSetListening;
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302 | }
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303 | else
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304 | {
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305 | newVisualState = "AllSetNotListening";
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306 | message = Resources.MessageAllSet;
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307 | }
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308 | }
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309 | else if ((this.Status & ChooserStatus.SensorInitializing) != 0)
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310 | {
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311 | newVisualState = "Initializing";
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312 | message = Resources.MessageInitializing;
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313 | }
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314 | else if ((this.Status & ChooserStatus.SensorConflict) != 0)
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315 | {
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316 | newVisualState = "Error";
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317 | message = Resources.MessageConflict;
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318 | moreInfo = Resources.MoreInformationConflict;
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319 | moreInfoUri = new Uri("http://go.microsoft.com/fwlink/?LinkID=239812");
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320 | }
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321 | else if ((this.Status & ChooserStatus.SensorNotGenuine) != 0)
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322 | {
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323 | newVisualState = "Error";
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324 | message = Resources.MessageNotGenuine;
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325 | moreInfo = Resources.MoreInformationNotGenuine;
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326 | moreInfoUri = new Uri("http://go.microsoft.com/fwlink/?LinkID=239813");
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327 | }
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328 | else if ((this.Status & ChooserStatus.SensorNotSupported) != 0)
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329 | {
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330 | newVisualState = "Error";
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331 | message = Resources.MessageNotSupported;
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332 | moreInfo = Resources.MoreInformationNotSupported;
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333 | moreInfoUri = new Uri("http://go.microsoft.com/fwlink/?LinkID=239814");
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334 | }
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335 | else if ((this.Status & ChooserStatus.SensorError) != 0)
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336 | {
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337 | newVisualState = "Error";
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338 | message = Resources.MessageError;
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339 | moreInfo = Resources.MoreInformationError;
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340 | moreInfoUri = new Uri("http://go.microsoft.com/fwlink/?LinkID=239817");
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341 | }
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342 | else if ((this.Status & ChooserStatus.SensorInsufficientBandwidth) != 0)
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343 | {
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344 | newVisualState = "Error";
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345 | message = Resources.MessageInsufficientBandwidth;
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346 | moreInfo = Resources.MoreInformationInsufficientBandwidth;
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347 | moreInfoUri = new Uri("http://go.microsoft.com/fwlink/?LinkID=239818");
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348 | }
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349 | else if ((this.Status & ChooserStatus.SensorNotPowered) != 0)
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350 | {
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351 | newVisualState = "Error";
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352 | message = Resources.MessageNotPowered;
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353 | moreInfo = Resources.MoreInformationNotPowered;
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354 | moreInfoUri = new Uri("http://go.microsoft.com/fwlink/?LinkID=239819");
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355 | }
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356 | else if ((this.Status & ChooserStatus.NoAvailableSensors) != 0)
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357 | {
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358 | newVisualState = "NoAvailableSensors";
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359 | message = Resources.MessageNoAvailableSensors;
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360 | moreInfo = Resources.MoreInformationNoAvailableSensors;
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361 | moreInfoUri = new Uri("http://go.microsoft.com/fwlink/?LinkID=239815");
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362 | }
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363 | else
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364 | {
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365 | newVisualState = "Stopped";
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366 | message = Resources.MessageNoAvailableSensors;
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367 | moreInfo = Resources.MoreInformationNoAvailableSensors;
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368 | moreInfoUri = new Uri("http://go.microsoft.com/fwlink/?LinkID=239815");
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369 | }
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370 |
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371 | this.Message = message;
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372 | this.MoreInformation = moreInfo;
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373 | this.MoreInformationUri = moreInfoUri;
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374 | this.MoreInformationVisibility = moreInfoUri == null ? Visibility.Collapsed : Visibility.Visible;
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375 | if (this.retryCommand != null)
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376 | {
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377 | this.retryCommand.InvokeCanExecuteChanged();
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378 | }
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379 |
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380 | this.VisualState = newVisualState;
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381 | }
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382 | }
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383 | } |
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