internal static DataObject DoDragMoveImpl(IEnumerable <WorkflowViewElement> draggedViewElements, Point referencePoint)
{
List <ModelItem> draggedModelItems = new List <ModelItem>();
bool first = true;
WorkflowViewElement viewElement = null;
foreach (WorkflowViewElement view in draggedViewElements)
{
if (view != null)
{
if (first)
{
viewElement = view;
first = false;
}
draggedModelItems.Add(view.ModelItem);
view.IsHitTestVisible = false;
}
}
DataObject dataObject = new DataObject(ModelItemsDataFormat, draggedModelItems);
// For compatiblity
if (viewElement != null)
{
dataObject.SetData(ModelItemDataFormat, viewElement.ModelItem);
dataObject.SetData(CompositeViewFormat, GetCompositeView(viewElement));
}
dataObject.SetData(DragAnchorPointFormat, referencePoint);
if (viewElement != null)
{
DesignerView designerView = viewElement.Context.Services.GetService <DesignerView>();
ViewElementDragShadow dragShadow = new ViewElementDragShadow(designerView.scrollableContent, draggedViewElements, referencePoint, designerView.ZoomFactor);
designerView.BeginDragShadowTracking(dragShadow);
//whenever drag drop fails - ensure getting rid of drag shadow
try
{
DragDrop.DoDragDrop(designerView, dataObject, DragDropEffects.Move | DragDropEffects.Copy | DragDropEffects.Scroll | DragDropEffects.Link);
}
catch
{
//let the caller handle exception
throw;
}
finally
{
designerView.EndDragShadowTracking(dragShadow);
foreach (WorkflowViewElement view in draggedViewElements)
{
if (view != null)
{
view.IsHitTestVisible = true;
}
}
}
}
return(dataObject);
}
public static DragDropEffects DoDragMove(WorkflowViewElement draggedViewElement, Point referencePoint)
{
if (draggedViewElement == null)
{
throw FxTrace.Exception.ArgumentNull("draggedViewElement");
}
if (referencePoint == null)
{
throw FxTrace.Exception.ArgumentNull("referencePoint");
}
ModelItem draggedActivityModelItem = draggedViewElement.ModelItem;
DataObject dataObject = new DataObject(ModelItemDataFormat, draggedActivityModelItem);
dataObject.SetData(CompositeViewFormat, GetCompositeView(draggedViewElement));
dataObject.SetData(DragAnchorPointFormat, referencePoint);
List <ModelItem> draggedModelItems = new List <ModelItem>();
draggedModelItems.Add(draggedActivityModelItem);
dataObject.SetData(ModelItemsDataFormat, draggedModelItems);
DesignerView view = draggedViewElement.Context.Services.GetService <DesignerView>();
ViewElementDragShadow dragShadow = new ViewElementDragShadow(view.scrollableContent, draggedViewElement, referencePoint, view.ZoomFactor);
draggedViewElement.IsHitTestVisible = false;
view.BeginDragShadowTracking(dragShadow);
//whenever drag drop fails - ensure getting rid of drag shadow
try
{
DragDrop.DoDragDrop(GetCompositeView(draggedViewElement), dataObject, DragDropEffects.Move | DragDropEffects.Copy | DragDropEffects.Scroll | DragDropEffects.Link);
}
catch
{
//let the caller handle exception
throw;
}
finally
{
view.EndDragShadowTracking(dragShadow);
draggedViewElement.IsHitTestVisible = true;
}
return(GetDragDropCompletedEffects(dataObject));
}
