private void UpdateDropTarget(MouseEventArgs e)
{
if (!_isCorrectParents)
{
CursorManager.SetGlobalCursor(CustomCursors.Ban);
return;
}
IDropTarget dropTarget = GetCorrectDropTarget(e);
if (dropTarget == null)
{
CursorManager.SetGlobalCursor(CustomCursors.Ban);
if (_currentDropTarget != null)
{
_currentDropTarget.OnLeaveDropZone();
_currentDropTarget = null;
}
}
else
{
if (!CanDrop(dropTarget, e))
{
CursorManager.SetGlobalCursor(CustomCursors.Ban);
if (_currentDropTarget != null)
{
_currentDropTarget.OnLeaveDropZone();
_currentDropTarget = null;
}
return;
}
CursorManager.ClearGlobalCursor();
if (_currentDropTarget == dropTarget)
{
if (IsMultipleDrag)
{
dropTarget.OnMoveInDropZone(_currentDragSources, e);
}
else
{
dropTarget.OnMoveInDropZone(_mainDragSource, e);
}
}
else
{
if (_currentDropTarget != null)
{
_currentDropTarget.OnLeaveDropZone();
}
if (IsMultipleDrag)
{
dropTarget.OnEnterDropZone(_currentDragSources, e);
}
else
{
dropTarget.OnEnterDropZone(_mainDragSource, e);
}
}
}
_currentDropTarget = dropTarget;
}
private void ClearDrag()
{
_mainDragSource = null;
_currentDragSources.Clear();
if (HasCurrentDisplayDragSources)
{
foreach (var item in _currentDisplayDragSources)
{
_rootDropArea.Children.Remove(item);
}
_currentDisplayDragSources.Clear();
}
CursorManager.ClearGlobalCursor();
}
