Mercurial > silverbladetech

annotate Chronosv2/source/Presentation/Controls/Interactivity/Behaviors/Watermark/TextBoxWatermarkBehavior.cs @ 10:443821e55f06

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial cleaned up add from Codeplex files
author stevenh7776 stevenhollidge@hotmail.com
date Tue, 21 Feb 2012 17:25:44 +0700
parents
children
rev   line source
10
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
1 using System;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
2 using System.Windows;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
3 using System.Windows.Controls;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
4 using Chronos.Presentation.Controls.Adorner;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
5 using Chronos.Presentation.Controls.Events;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
6
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
7 namespace Chronos.Presentation.Controls.Interactivity.Behaviors
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
8 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
9 /// <summary>
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
10 /// http://blindmeis.wordpress.com/2010/07/16/wpf-watermark-textbox-behavior/
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
11 /// </summary>
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
12 public sealed class TextBoxWatermarkBehavior
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
13 : System.Windows.Interactivity.Behavior<TextBox>
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
14 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
15 #region · Attached Properties ·
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
16
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
17 public static readonly DependencyProperty LabelProperty =
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
18 DependencyProperty.RegisterAttached("Label", typeof(string), typeof(TextBoxWatermarkBehavior));
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
19
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
20 public static readonly DependencyProperty LabelStyleProperty =
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
21 DependencyProperty.RegisterAttached("LabelStyle", typeof(Style), typeof(TextBoxWatermarkBehavior));
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
22
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
23 #endregion
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
24
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
25 #region · Fields ·
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
26
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
27 private TextBlockAdorner adorner;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
28 private WeakPropertyChangeNotifier notifier;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
29
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
30 #endregion
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
31
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
32 #region · Properties ·
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
33
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
34 public string Label
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
35 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
36 get { return (string)base.GetValue(LabelProperty); }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
37 set { base.SetValue(LabelProperty, value); }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
38 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
39
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
40 public Style LabelStyle
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
41 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
42 get { return (Style)base.GetValue(LabelStyleProperty); }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
43 set { base.SetValue(LabelStyleProperty, value); }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
44 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
45
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
46 #endregion
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
47
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
48 #region · Overriden Methods ·
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
49
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
50 protected override void OnAttached()
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
51 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
52 base.OnAttached();
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
53
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
54 this.AssociatedObject.Loaded += this.AssociatedObjectLoaded;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
55 this.AssociatedObject.TextChanged += this.AssociatedObjectTextChanged;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
56 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
57
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
58 protected override void OnDetaching()
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
59 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
60 base.OnDetaching();
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
61
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
62 this.AssociatedObject.Loaded -= this.AssociatedObjectLoaded;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
63 this.AssociatedObject.TextChanged -= this.AssociatedObjectTextChanged;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
64
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
65 this.notifier = null;
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
66 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
67
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
68 #endregion
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
69
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
70 #region · Private Methods ·
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
71
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
72 private void AssociatedObjectTextChanged(object sender, TextChangedEventArgs e)
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
73 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
74 this.UpdateAdorner();
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
75 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
76
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
77 private void AssociatedObjectLoaded(object sender, System.Windows.RoutedEventArgs e)
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
78 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
79 this.adorner = new TextBlockAdorner(this.AssociatedObject, this.Label, this.LabelStyle);
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
80
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
81 this.UpdateAdorner();
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
82
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
83 //AddValueChanged for IsFocused in a weak manner
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
84 this.notifier = new WeakPropertyChangeNotifier(this.AssociatedObject, UIElement.IsFocusedProperty);
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
85 this.notifier.ValueChanged += new EventHandler(this.UpdateAdorner);
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
86 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
87
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
88 private void UpdateAdorner(object sender, EventArgs e)
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
89 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
90 this.UpdateAdorner();
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
91 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
92
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
93 private void UpdateAdorner()
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
94 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
95 if (!String.IsNullOrEmpty(this.AssociatedObject.Text) || this.AssociatedObject.IsFocused)
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
96 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
97 // Hide the Watermark Label if the adorner layer is visible
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
98 this.AssociatedObject.TryRemoveAdorners<TextBlockAdorner>();
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
99 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
100 else
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
101 {
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
102 // Show the Watermark Label if the adorner layer is visible
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
103 this.AssociatedObject.TryAddAdorner<TextBlockAdorner>(adorner);
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
104 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
105 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
106
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
107 #endregion
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
108 }
443821e55f06 Initial cleaned up add from Codeplex files
stevenh7776 stevenhollidge@hotmail.com
parents:
diff changeset
109 }