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annotate SilverlightGlimpse/Services/GlimpseService.cs @ 60:fc62c971a117

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author Steven Hollidge <stevenhollidge@hotmail.com>
date Sat, 21 Apr 2012 21:19:39 +0100
parents 3591c26bd63e
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59
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1 using System;
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2 using System.Collections.ObjectModel;
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3 using System.Diagnostics;
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4 using System.Windows;
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5 using System.Windows.Controls;
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6 using SilverlightGlimpse.Controls;
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7 using SilverlightGlimpse.Models;
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8
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9 namespace SilverlightGlimpse.Services
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10 {
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11 public class GlimpseService
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12 {
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13 #region Fields
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14
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15 private static GlimpseService _instance;
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16
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17 #endregion
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18
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19 #region Private constructor
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20
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21 private GlimpseService()
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22 {
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23 }
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24
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25 #endregion
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26
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27 #region Properties
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28
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29 public static GlimpseService CreateInstance
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30 {
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31 get { return (_instance == null) ? _instance = new GlimpseService() : _instance; }
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32 }
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33
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34 internal Application App { get; private set; }
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35 internal FloatableWindow GlimpseWindow { get; set;}
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36 internal string HostApplicationName { get; set; }
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37 internal ObservableCollection<ExceptionWrapper> HostExceptions { get; private set; }
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38 internal FrameworkElement RootVisual { get; private set; }
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39
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40 #endregion
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41
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42 #region Creation and Loading
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43
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44 public void DisplayLoadFailure(Application app, Exception ex, string hostApplicationName)
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45 {
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46 Debug.WriteLine("{0} had exception. {1}", this.HostApplicationName, ex.ToString());
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47 App = app;
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48 RootVisual = new LoadExceptionViewer(ex, hostApplicationName);
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49
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50 RootVisual.BindingValidationError += HostRootVisual_BindingValidationError;
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51 App.UnhandledException += Application_UnhandledException;
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52 }
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53
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54 public void Load(Application app, string hostApplicationName)
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55 {
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56 this.App = app;
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57 this.RootVisual = App.RootVisual as FrameworkElement;
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58 this.HostApplicationName = hostApplicationName;
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59
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60 RootVisual.BindingValidationError += HostRootVisual_BindingValidationError;
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61 App.UnhandledException += Application_UnhandledException;
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62
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63 FloatableWindow window = new FloatableWindow();
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64 window.Title = this.HostApplicationName;
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65 window.Content = new GlimpseViewer();
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66
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67 if (Double.IsNaN(this.RootVisual.Width))
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68 {
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69 //if the host control is autosized (consumes the browser window) then locate Glimpse in the top, left
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70 window.Show();
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71 }
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72 else
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73 {
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74 //if the host is fixed size then attempt to locate the popup control in the upper right corner
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75 var dblLeft = this.RootVisual.Width - 200;
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76
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77 if (dblLeft < 0)
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78 dblLeft = 0;
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79
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80 window.Show();
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81 }
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82 }
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83 #endregion
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84
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85 #region Events handlers
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86
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87 private void HostRootVisual_BindingValidationError(object sender, ValidationErrorEventArgs e)
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88 {
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89 string controlName = "(none)";
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90 Control control = e.OriginalSource as Control;
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91
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92 if (control != null && !string.IsNullOrEmpty(control.Name))
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93 {
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94 controlName = control.Name;
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95 }
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96
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97 Exception ex = e.Error.Exception;
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98
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99 while (ex != null)
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100 {
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101 this.HostExceptions.Add(new ExceptionWrapper(e.Action, controlName, e.Error.Exception));
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102 ex = ex.InnerException;
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103 }
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104 }
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105
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106 private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
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107 {
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108 Debug.WriteLine("{0} had exception. {1}", this.HostApplicationName, e.ExceptionObject.ToString());
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109
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110 Exception ex = e.ExceptionObject;
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111
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112 while (ex != null)
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113 {
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114 this.HostExceptions.Add(new ExceptionWrapper(ex));
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115 ex = ex.InnerException;
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116 }
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117
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118 e.Handled = true;
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119 }
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120
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121 #endregion
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122 }
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123 }