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annotate MetroWpf/MetroWpf.Xaml/Extensions/AdornerExtensions.cs @ 15:060f02cd4591

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author stevenh7776 stevenhollidge@hotmail.com
date Mon, 12 Mar 2012 23:05:21 +0800
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children a8b50a087544
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15
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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4 using System.Text;
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5 using System.Windows.Documents;
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6 using System.Windows;
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7 using System.Windows.Controls;
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8
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9 namespace MetroWpf.Xaml.Extensions
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10 {
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11 public static class AdornerExtensions
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12 {
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13 #region · Extension Methods ·
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14
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15 public static void TryRemoveAdorners<T>(this UIElement elem)
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16 where T : System.Windows.Documents.Adorner
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17 {
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18 AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(elem);
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19
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20 if (adornerLayer != null)
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21 {
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22 adornerLayer.RemoveAdorners<T>(elem);
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23 }
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24 }
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25
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26 public static void RemoveAdorners<T>(this AdornerLayer adr, UIElement elem)
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27 where T : System.Windows.Documents.Adorner
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28 {
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29 System.Windows.Documents.Adorner[] adorners = adr.GetAdorners(elem);
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30
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31 if (adorners == null)
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32 {
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33 return;
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34 }
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35
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36 for (int i = adorners.Length - 1; i >= 0; i--)
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37 {
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38 if (adorners[i] is T)
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39 {
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40 adr.Remove(adorners[i]);
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41 }
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42 }
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43 }
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44
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45 public static void TryAddAdorner<T>(this UIElement elem, System.Windows.Documents.Adorner adorner)
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46 where T : System.Windows.Documents.Adorner
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47 {
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48 AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(elem);
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49
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50 if (adornerLayer != null && !adornerLayer.ContainsAdorner<T>(elem))
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51 {
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52 adornerLayer.Add(adorner);
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53 Panel.SetZIndex(adornerLayer, Panel.GetZIndex(elem));
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54 }
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55 }
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56
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57 public static bool ContainsAdorner<T>(this AdornerLayer adr, UIElement elem)
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58 where T : System.Windows.Documents.Adorner
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59 {
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60 System.Windows.Documents.Adorner[] adorners = adr.GetAdorners(elem);
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61
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62 if (adorners == null)
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63 {
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64 return false;
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65 }
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66
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67 for (int i = adorners.Length - 1; i >= 0; i--)
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68 {
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69 if (adorners[i] is T)
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70 {
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71 return true;
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72 }
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73 }
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74
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75 return false;
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76 }
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77
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78 public static void RemoveAllAdorners(this AdornerLayer adr, UIElement elem)
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79 {
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80 System.Windows.Documents.Adorner[] adorners = adr.GetAdorners(elem);
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81
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82 if (adorners == null)
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83 {
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84 return;
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85 }
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86
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87 foreach (var toRemove in adorners)
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88 {
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89 adr.Remove(toRemove);
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90 }
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91 }
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92
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93 #endregion
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94 }
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95 }