/// <summary>
/// Registers this object to receive notifications of changes to the content.
/// </summary>
/// <param name="dependencyObject">The target element that will register for state change events.</param>
public override void Register(DependencyObject dependencyObject)
{
// The Undo/Redo strategy involves handling global operations that are common to all controls and specific operations
// that are particular to a family of controls. This registers handlers for this family of controls that will add the
// proper actions to the Undo/Redo stacks.
Selector selector = dependencyObject as Selector;
selector.AddHandler(Selector.SelectionChangedEvent, new SelectionChangedEventHandler(HandleSelectionChanged), true);
selector.AddHandler(FrameworkElement.PreviewKeyDownEvent, new KeyEventHandler(HandleKeyDown));
}
private static void OnWatermarkTextChanged(
DependencyObject dependencyObject,
DependencyPropertyChangedEventArgs e
)
{
EnsureCorrectControl(dependencyObject);
Control control = dependencyObject as Control;
if (control != null)
{
SetWatermarkVisibility(control);
control.RemoveHandler(
TextBoxBase.TextChangedEvent,
new TextChangedEventHandler(OnTextChanged)
);
control.AddHandler(
TextBoxBase.TextChangedEvent,
new TextChangedEventHandler(OnTextChanged),
true
);
Selector selector = control as Selector;
if (selector != null)
{
selector.AddHandler(Selector.SelectionChangedEvent,
new SelectionChangedEventHandler(OnSelectionChanged)
);
}
}
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
_suggenstionListBox = this.GetTemplateChild("PART_SuggenstionListBox") as Selector;
if (_suggenstionListBox != null)
{
_suggenstionListBox.AddHandler(ListBox.PreviewKeyDownEvent, new KeyEventHandler(this.OnSuggestionListBoxPreviewKeyDown));
_suggenstionListBox.AddHandler(ListBox.MouseUpEvent, new MouseButtonEventHandler(this.OnSuggestionListBoxMouseUp));
_suggenstionListBox.AddHandler(ListBox.LostFocusEvent, new RoutedEventHandler(this.OnSuggestionListBoxLostFocus));
}
_popup = this.GetTemplateChild("PART_Popup") as Popup;
_searchButton = this.GetTemplateChild("PART_SearchButton") as Button;
if (_searchButton != null)
{
_searchButton.AddHandler(Button.ClickEvent, new RoutedEventHandler(this.OnSearchButtonClick));
this.InvalidateMeasure();
this.Measure(new Size(100, 100));
_searchButton.Height = this.DesiredSize.Height;
}
this.AddHandler(SearchBox.SizeChangedEvent, new SizeChangedEventHandler(this.OnSizeChanged));
}
/// <summary>
/// Constructs a new selector property binding for the given Selector element.
/// </summary>
/// <param name="selector">The selector element to be bound to the data property.</param>
protected SelectorPropertyBinding(Selector selector) : base(selector)
{
selector.SelectionChanged += OnSelectionChanged;
selector.AddHandler(TextBoxBase.TextChangedEvent, new TextChangedEventHandler(OnTextChanged));
}
