/// <summary>
/// Creates the handlers link.
/// </summary>
/// <param name="routedEvent">The routed event.</param>
/// <param name="handlers">The handlers.</param>
/// <returns>System.Int32.</returns>
internal int CreateHandlersLink(RoutedEvent routedEvent, RoutedEventHandlerInfoList handlers)
{
var item = new ClassHandlers();
item.RoutedEvent = routedEvent;
item.Handlers = handlers;
item.HasSelfHandlers = false;
this.eventHandlersList.Add(item);
return this.eventHandlersList.Count - 1;
}
/// <summary>
/// Adds to existing handlers.
/// </summary>
/// <param name="index">The index.</param>
/// <param name="handler">The handler.</param>
/// <param name="handledEventsToo">if set to <c>true</c> [handled events too].</param>
/// <returns>RoutedEventHandlerInfoList.</returns>
internal RoutedEventHandlerInfoList AddToExistingHandlers(int index, Delegate handler, bool handledEventsToo)
{
var info = new RoutedEventHandlerInfo(handler, handledEventsToo);
var handlers = this.eventHandlersList.List[index].Handlers;
if ((handlers == null) || !this.eventHandlersList.List[index].HasSelfHandlers)
{
handlers = new RoutedEventHandlerInfoList();
handlers.Handlers = new RoutedEventHandlerInfo[] { info };
handlers.Next = this.eventHandlersList.List[index].Handlers;
this.eventHandlersList.List[index].Handlers = handlers;
this.eventHandlersList.List[index].HasSelfHandlers = true;
return handlers;
}
var length = handlers.Handlers.Length;
var destinationArray = new RoutedEventHandlerInfo[length + 1];
Array.Copy(handlers.Handlers, 0, destinationArray, 0, length);
destinationArray[length] = info;
handlers.Handlers = destinationArray;
return handlers;
}
/// <summary>
/// Updates the sub class handlers.
/// </summary>
/// <param name="routedEvent">The routed event.</param>
/// <param name="baseClassListeners">The base class listeners.</param>
internal void UpdateSubClassHandlers(RoutedEvent routedEvent, RoutedEventHandlerInfoList baseClassListeners)
{
var handlersIndex = this.GetHandlersIndex(routedEvent);
if (handlersIndex != -1)
{
var hasSelfHandlers = this.eventHandlersList.List[handlersIndex].HasSelfHandlers;
var handlers = hasSelfHandlers ? this.eventHandlersList.List[handlersIndex].Handlers.Next : this.eventHandlersList.List[handlersIndex].Handlers;
var flag = false;
if (handlers != null)
{
if ((baseClassListeners.Next != null) && baseClassListeners.Next.Contains(handlers))
{
flag = true;
}
}
else
{
flag = true;
}
if (flag)
{
if (hasSelfHandlers)
{
this.eventHandlersList.List[handlersIndex].Handlers.Next = baseClassListeners;
}
else
{
this.eventHandlersList.List[handlersIndex].Handlers = baseClassListeners;
}
}
}
}
