protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonDown(e);
_isMouseDown = true;
_draggingItem = this;
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (e.LeftButton != MouseButtonState.Pressed)
{
_isMouseDown = false;
_draggingItem = null;
}
}
protected override void OnMouseLeave(MouseEventArgs e)
{
base.OnMouseLeave(e);
if (_isMouseDown && e.LeftButton == MouseButtonState.Pressed)
{
_draggingItem = this;
}
_isMouseDown = false;
}
internal static void ResetDraggingItem()
{
_draggingItem = null;
}