// ========================================
// 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;
}
