/// <summary>
/// Removes the specified input event listener so that it no longer
/// receives input events from this node.
/// </summary>
/// <param name="listener">The input listener to remove.</param>
public virtual void RemoveInputEventListener(PInputEventListener listener) {
KeyDown -= new PInputEventHandler(listener.OnKeyDown);
KeyPress -= new PInputEventHandler(listener.OnKeyPress);
KeyUp -= new PInputEventHandler(listener.OnKeyUp);
Click -= new PInputEventHandler(listener.OnClick);
DoubleClick -= new PInputEventHandler(listener.OnDoubleClick);
MouseDown -= new PInputEventHandler(listener.OnMouseDown);
MouseUp -= new PInputEventHandler(listener.OnMouseUp);
MouseMove -= new PInputEventHandler(listener.OnMouseMove);
MouseDrag -= new PInputEventHandler(listener.OnMouseDrag);
MouseEnter -= new PInputEventHandler(listener.OnMouseEnter);
MouseLeave -= new PInputEventHandler(listener.OnMouseLeave);
MouseWheel -= new PInputEventHandler(listener.OnMouseWheel);
DragEnter -= new PInputEventHandler(listener.OnDragEnter);
DragLeave -= new PInputEventHandler(listener.OnDragLeave);
DragOver -= new PInputEventHandler(listener.OnDragOver);
DragDrop -= new PInputEventHandler(listener.OnDragDrop);
GotFocus -= new PInputEventHandler(listener.OnGotFocus);
LostFocus -= new PInputEventHandler(listener.OnLostFocus);
}
/// <summary>
/// Raise the given input event.
/// </summary>
/// <param name="e">The arguments for this input event.</param>
/// <param name="handler">The delegate to dispatch this event to.</param>
/// <remarks>
/// If an event has been set as handled, and the delegate is not a member of a listener
/// class, then the event is consumed. If the delegate is a member of a listener class
/// the decision of consumption is left up to the filter associated with that class.
/// </remarks>
protected virtual void HandleEvent(PInputEventArgs e, PInputEventHandler handler) {
if (handler != null) {
Delegate[] list = handler.GetInvocationList();
for (int i = list.Length - 1; i >= 0; i--) {
Delegate each = list[i];
if (each.Target is PInputEventListener) {
PInputEventListener listener = (PInputEventListener)each.Target;
if (listener.DoesAcceptEvent(e)) {
// The source is the node from which the event originated, not the
// picked node.
((PInputEventHandler)each)(this, e);
}
}
else if (!e.Handled) {
// The source is the node from which the event originated, not the
// picked node.
((PInputEventHandler)each)(this, e);
}
}
}
}
/// <summary>
/// Adds the specified input event listener to receive input events
/// from this node.
/// </summary>
/// <param name="listener">The new input listener</param>
public virtual void AddInputEventListener(PInputEventListener listener) {
KeyDown += new PInputEventHandler(listener.OnKeyDown);
KeyPress += new PInputEventHandler(listener.OnKeyPress);
KeyUp += new PInputEventHandler(listener.OnKeyUp);
Click += new PInputEventHandler(listener.OnClick);
DoubleClick += new PInputEventHandler(listener.OnDoubleClick);
MouseDown += new PInputEventHandler(listener.OnMouseDown);
MouseUp += new PInputEventHandler(listener.OnMouseUp);
MouseMove += new PInputEventHandler(listener.OnMouseMove);
MouseDrag += new PInputEventHandler(listener.OnMouseDrag);
MouseEnter += new PInputEventHandler(listener.OnMouseEnter);
MouseLeave += new PInputEventHandler(listener.OnMouseLeave);
MouseWheel += new PInputEventHandler(listener.OnMouseWheel);
DragEnter += new PInputEventHandler(listener.OnDragEnter);
DragLeave += new PInputEventHandler(listener.OnDragLeave);
DragOver += new PInputEventHandler(listener.OnDragOver);
DragDrop += new PInputEventHandler(listener.OnDragDrop);
GotFocus += new PInputEventHandler(listener.OnGotFocus);
LostFocus += new PInputEventHandler(listener.OnLostFocus);
}
