/// <summary>
/// Get the listener instance. If the listener object does not exist, create one and add it to the list.
/// All same gestures share one gesture listener.
/// </summary>
/// <param name="listenerType"></param>
/// <returns></returns>
internal GestureListener GetListener(Type listenerType)
{
if (!list.Keys.Contains(listenerType))
{
GestureListener listener = null;
if (listenerType == typeof(SortingListener))
{
listener = new SortingListener(gestureListenerController);
}
else if (listenerType == typeof(DeletingBoxListener))
{
listener = new DeletingBoxListener(gestureListenerController);
}
list.Add(listenerType, listener);
}
return(list[listenerType]);
}
/// <summary>
/// Detect the sortingbox deleting gesture (Drag and drop the box to the delete box on the menubar).
/// The touches in the sorting gesture will be removed from the touchList
/// </summary>
/// <param name="touchList"></param>
/// <returns></returns>
internal static async Task Detect(List <Touch> touchList, CentralControllers controllers)
{
List <Touch> usedTouches = new List <Touch>();
DeletingBoxGesture gesture = null;
foreach (Touch touch in touchList)
{
if (touch.Type == typeof(SortingBox) && !usedTouches.Contains(touch))
{
SortingBox box = touch.Sender as SortingBox;
MenuBar[] bars = controllers.MenuLayerController.GetAllMenuBars();
foreach (MenuBar bar in bars)
{
bool isIntersect = await bar.IsIntersectWithDelete(box.Position);
if (isIntersect)
{
foreach (Touch otherTouches in touchList)
{
if (touch.Sender == otherTouches.Sender && !usedTouches.Contains(otherTouches))
{
usedTouches.Add(otherTouches);
}
}
gesture = new DeletingBoxGesture(controllers.GestureController);
gesture.AssociatedTouches = usedTouches;
gesture.AssociatedObjects = new List <object>()
{
box, bar
};
gesture.AssociatedObjectTypes = new List <Type>()
{
typeof(SortingBox), typeof(MenuBar)
};
DeletingBoxListener listener = controllers.ListenerController.GetListener(typeof(DeletingBoxListener)) as DeletingBoxListener;
RegisterListener(gesture, listener);// Register the gesture and add the gesture to the gesture list.
}
}
}
}
foreach (Touch touch in usedTouches)
{
touchList.Remove(touch);
}
}