public void MoveTo(SwimlaneShapeBase dragObject, int endPosition, bool isUndoable = true)
{
bool shouldAdd = !this.Items.Contains(dragObject);
bool addToDiagram = !this.Diagram.Items.Contains(dragObject);
var diagramPosition = dragObject.Position;
var startPosition = shouldAdd ? this.Items.Count : dragObject.ContainerPosition;
endPosition = startPosition <= endPosition ? endPosition : endPosition + 1;
var doAction = new Action<object>((o) =>
{
this.MoveContainer(startPosition, endPosition, dragObject);
if (shouldAdd)
this.AddItem(dragObject);
this.UpdateChildContainers();
});
if (isUndoable)
{
var command = new UndoableDelegateCommand("Move container",
doAction,
new Action<object>((o) =>
{
this.MoveContainer(endPosition, startPosition, dragObject);
if (shouldAdd)
{
this.RemoveItem(dragObject);
dragObject.Position = diagramPosition;
if (addToDiagram)
this.Diagram.Items.Remove(dragObject);
}
this.UpdateChildContainers();
}));
this.Diagram.ServiceLocator.GetService<IUndoRedoService>().ExecuteCommand(command);
}
else
{
doAction.Invoke(null);
}
}
internal void ShowDragOverVisual(SwimlaneShapeBase shape)
{
if (shape.ParentMainContainer == null) return;
var bounds = shape.Bounds;
if (shape.ParentMainContainer.ChildrenPositioning == sys.Orientation.Vertical)
{
if (this.horizontalDragVisual == null) return;
this.horizontalDragVisual.Visibility = System.Windows.Visibility.Visible;
Canvas.SetLeft(this.horizontalDragVisual, bounds.X);
Canvas.SetTop(this.horizontalDragVisual, bounds.Bottom);
this.horizontalDragVisual.Width = bounds.Width;
}
else
{
if (this.verticalDragVisual == null) return;
this.verticalDragVisual.Visibility = System.Windows.Visibility.Visible;
Canvas.SetLeft(this.verticalDragVisual, bounds.Right);
Canvas.SetTop(this.verticalDragVisual, bounds.Y);
this.verticalDragVisual.Height = bounds.Height;
}
}
private void MoveContainer(int startPosition, int endPosition, SwimlaneShapeBase dragObject)
{
if (startPosition <= endPosition)
{
for (int i = 0; i < this.OrderedChildren.Count; i++)
{
var item = this.OrderedChildren[i];
if (item.ContainerPosition <= startPosition)
continue;
if (item.ContainerPosition > endPosition)
break;
item.ContainerPosition--;
}
dragObject.ContainerPosition = endPosition;
}
else
{
for (int i = 0; i < this.OrderedChildren.Count; i++)
{
var item = this.OrderedChildren[i];
if (item.ContainerPosition < endPosition)
continue;
if (item.ContainerPosition >= startPosition)
break;
item.ContainerPosition++;
}
dragObject.ContainerPosition = endPosition;
}
}
internal void SwapChildren(SwimlaneShapeBase first, SwimlaneShapeBase second)
{
int firstPosition = first.ContainerPosition;
int secondPosition = second.ContainerPosition;
var command = new UndoableDelegateCommand("Swap children",
new Action<object>((o) =>
{
first.ContainerPosition = secondPosition;
second.ContainerPosition = firstPosition;
this.UpdateChildContainers();
}),
new Action<object>((o) =>
{
first.ContainerPosition = firstPosition;
second.ContainerPosition = secondPosition;
this.UpdateChildContainers();
}));
this.Diagram.ServiceLocator.GetService<IUndoRedoService>().ExecuteCommand(command);
}
