// ======================================== // method // ======================================== public void PrepareDnDOnMouseDown(IMouseOperatable target, MouseEventArgs e) { if (target == null) { return; } ClearDnDState(); var dragSource = target.DragSource as DragSource; if (dragSource == null) { return; } var dragSourceEventArgs = new DragSourceEventArgs(e); dragSource.HandleJudgeDragStart(target, dragSourceEventArgs); if (dragSourceEventArgs.DoIt) { _currentProceededDragSource = dragSource; _lastCreatedDragSourceEventArgs = dragSourceEventArgs; _isPrepared = true; } }
public bool ShouldDnDOnDragOut(IDragSource dragSource, object eventSender, MouseEventArgs e) { ClearDnDState(); var dragSrc = dragSource as DragSource; if (dragSource == null) { return(false); } var dragSourceEventArgs = new DragSourceEventArgs(e); dragSrc.HandleJudgeDragStart(eventSender, dragSourceEventArgs); if (dragSourceEventArgs.DoIt) { _currentProceededDragSource = dragSrc; _lastCreatedDragSourceEventArgs = dragSourceEventArgs; _isPrepared = true; return(true); } else { return(false); } }
public void ClearDnDState() { _currentProceededDragSource = null; _lastCreatedDragSourceEventArgs = null; _isPrepared = false; }