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| 1 | +using System; |
| 2 | +using System.ComponentModel; |
| 3 | +using System.Windows; |
| 4 | + |
| 5 | +namespace CodeHubDesktop.Controls |
| 6 | +{ |
| 7 | + public class BindableAvalonEditor : ICSharpCode.AvalonEdit.TextEditor, INotifyPropertyChanged |
| 8 | + { |
| 9 | + /// <summary> |
| 10 | + /// A bindable Text property |
| 11 | + /// </summary> |
| 12 | + public new string Text |
| 13 | + { |
| 14 | + get => (string)GetValue(TextProperty); |
| 15 | + set |
| 16 | + { |
| 17 | + SetValue(TextProperty, value); |
| 18 | + RaisePropertyChanged("Text"); |
| 19 | + } |
| 20 | + } |
| 21 | + |
| 22 | + /// <summary> |
| 23 | + /// The bindable text property dependency property |
| 24 | + /// </summary> |
| 25 | + public static readonly DependencyProperty TextProperty = |
| 26 | + DependencyProperty.Register( |
| 27 | + "Text", |
| 28 | + typeof(string), |
| 29 | + typeof(BindableAvalonEditor), |
| 30 | + new FrameworkPropertyMetadata |
| 31 | + { |
| 32 | + DefaultValue = default(string), |
| 33 | + BindsTwoWayByDefault = true, |
| 34 | + PropertyChangedCallback = OnDependencyPropertyChanged |
| 35 | + } |
| 36 | + ); |
| 37 | + |
| 38 | + protected static void OnDependencyPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args) |
| 39 | + { |
| 40 | + BindableAvalonEditor target = (BindableAvalonEditor)obj; |
| 41 | + |
| 42 | + if (target.Document != null) |
| 43 | + { |
| 44 | + int caretOffset = target.CaretOffset; |
| 45 | + object newValue = args.NewValue; |
| 46 | + |
| 47 | + if (newValue == null) |
| 48 | + { |
| 49 | + newValue = ""; |
| 50 | + } |
| 51 | + |
| 52 | + target.Document.Text = (string)newValue; |
| 53 | + target.CaretOffset = Math.Min(caretOffset, newValue.ToString().Length); |
| 54 | + } |
| 55 | + } |
| 56 | + |
| 57 | + protected override void OnTextChanged(EventArgs e) |
| 58 | + { |
| 59 | + if (Document != null) |
| 60 | + { |
| 61 | + Text = Document.Text; |
| 62 | + } |
| 63 | + |
| 64 | + base.OnTextChanged(e); |
| 65 | + } |
| 66 | + |
| 67 | + /// <summary> |
| 68 | + /// Raises a property changed event |
| 69 | + /// </summary> |
| 70 | + /// <param name="property">The name of the property that updates</param> |
| 71 | + public void RaisePropertyChanged(string property) |
| 72 | + { |
| 73 | + if (PropertyChanged != null) |
| 74 | + { |
| 75 | + PropertyChanged(this, new PropertyChangedEventArgs(property)); |
| 76 | + } |
| 77 | + } |
| 78 | + |
| 79 | + public event PropertyChangedEventHandler PropertyChanged; |
| 80 | + } |
| 81 | +} |
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