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annotate Chronosv2/source/DragAndDrop/ListBoxDragDropDataProvider.cs @ 10:443821e55f06

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Initial cleaned up add from Codeplex files
author stevenh7776 stevenhollidge@hotmail.com
date Tue, 21 Feb 2012 17:25:44 +0700
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10
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1 using System;
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2 using System.Diagnostics;
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3 using System.Windows;
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4 using System.Windows.Controls;
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5 using System.Windows.Controls.Primitives;
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6 using System.Windows.Input;
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7 using System.Xml;
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8
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9 namespace Chronos.Presentation.DragAndDrop
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10 {
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11 public sealed class ListBoxDragDropDataProvider : IDataDropObjectProvider
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12 {
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13 #region · Fields ·
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14
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15 private ListBox list;
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16
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17 #endregion
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18
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19 #region · Properties ·
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20
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21 public DragDropProviderActions SupportedActions
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22 {
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23 get
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24 {
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25 return DragDropProviderActions.Data |
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26 DragDropProviderActions.Visual |
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27 DragDropProviderActions.Unparent |
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28 DragDropProviderActions.MultiFormatData;
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29 }
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30 }
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31
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32 #endregion
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33
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34 #region · Constructors ·
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35
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36 public ListBoxDragDropDataProvider(ListBox list)
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37 {
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38 this.list = list;
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39 }
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40
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41 #endregion
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42
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43 #region · IDataDropObjectProvider Members ·
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44
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45 public void AppendData (ref IDataObject data, MouseEventArgs e)
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46 {
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47 if (!(this.list.InputHitTest(e.GetPosition(e.OriginalSource as UIElement)) is ListBox)
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48 && !(this.list.InputHitTest(e.GetPosition(e.OriginalSource as UIElement)) is ScrollViewer)
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49 && !(e.OriginalSource is Thumb))
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50 {
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51 object o = this.list.SelectedItem;
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52
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53 // This is cheating .. just for an example's sake..
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54 Debug.Assert(!data.GetDataPresent(DataFormats.Text));
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55
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56 if (o.GetType() == typeof(XmlElement))
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57 {
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58 data.SetData(DataFormats.Text, ((XmlElement)o).OuterXml);
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59 }
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60 else
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61 {
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62 data.SetData(DataFormats.Text, o.ToString());
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63 }
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64
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65 Debug.Assert(!data.GetDataPresent(o.GetType().ToString()));
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66
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67 data.SetData(o.GetType().ToString(), o);
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68 }
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69 else
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70 {
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71 data = null;
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72 }
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73 }
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74
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75 public object GetData()
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76 {
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77 return this.list.SelectedItem;
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78 }
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79
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80 public UIElement GetVisual(MouseEventArgs e)
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81 {
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82 return this.list.ItemContainerGenerator.ContainerFromItem(this.list.SelectedItem) as UIElement;
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83 }
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84
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85 public void GiveFeedback(System.Windows.GiveFeedbackEventArgs args)
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86 {
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87 throw new NotImplementedException("Forgot to check the Supported actions??");
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88 }
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89
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90 public void ContinueDrag(System.Windows.QueryContinueDragEventArgs args)
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91 {
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92 throw new NotImplementedException("Forgot to check the Supported actions??");
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93 }
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94
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95 public bool UnParent()
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96 {
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97 // We are passing data, nothing to unparent
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98 throw new NotImplementedException("We are passing data, nothing to unparent... what up ");
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99 }
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100
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101 #endregion
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102 }
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103 }