/// <summary>
/// Replaces the element at the specified index.
/// </summary>
/// <param name="index">The zero-based index of the element to replace.</param>
/// <param name="item">The new value for the element at the specified index. The value can be null for reference types.</param>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="index"/> is less than zero.-or-<paramref name="index"/> is greater than <see cref="P:System.Collections.ObjectModel.Collection`1.Count"/>.</exception>
protected override void SetItem(int index, EventBinding item)
{
EventBindingCollection.ValidateValue(item);
if (item != this[index])
{
this[index].Source = null;
base.SetItem(index, item);
this[index].Source = this.SourceUIElement;
}
}
private static void OnEventBindingsChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
UIElement uiElement = d as UIElement;
if (uiElement != null)
{
EventBindingCollection oldEventBindingCollection = e.OldValue as EventBindingCollection;
EventBindingCollection newEventBindingCollection = e.NewValue as EventBindingCollection;
// Detach the old instance
if (oldEventBindingCollection != null)
{
oldEventBindingCollection.SourceUIElement = null;
}
// Attach the new instance
if (newEventBindingCollection != null)
{
newEventBindingCollection.SourceUIElement = uiElement;
}
}
}
/// <summary>
/// Sets the value of the <see cref="EventBindingsProperty"/> attached property for a specified <see cref="UIElement"/>.
/// </summary>
/// <param name="element">The element to which the attached property is written.</param>
/// <param name="eventBindings">The event bindings.</param>
public static void SetEventBindings(UIElement element, EventBindingCollection eventBindings)
{
element.SetValue(Extensions.EventBindingsProperty, eventBindings);
}
/// <summary>
/// Inserts an element into the <see cref="T:System.Collections.ObjectModel.Collection`1"/> at the specified index.
/// </summary>
/// <param name="index">The zero-based index at which <paramref name="item"/> should be inserted.</param>
/// <param name="item">The object to insert. The value can be null for reference types.</param>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="index"/> is less than zero.-or-<paramref name="index"/> is greater than <see cref="P:System.Collections.ObjectModel.Collection`1.Count"/>.</exception>
protected override void InsertItem(int index, EventBinding item)
{
EventBindingCollection.ValidateValue(item);
base.InsertItem(index, item);
item.Source = this.SourceUIElement;
}
