//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
#region Constructors
/// <summary>
/// Constructs a DragEventArgs instance.
/// </summary>
/// <param name="data">
/// The data object used in this drag drop operation.
/// </param>
/// <param name="dragDropKeyStates">
/// The current state of the mouse button and modifier keys.
/// </param>
/// <param name="allowedEffects">
/// Allowed effects of a drag-and-drop operation.
/// </param>
/// <param name="target">
/// The target of the event.
/// </param>
/// <param name="point">
/// The current mouse position of the target.
/// </param>
internal DragEventArgs(IDataObject data, DragDropKeyStates dragDropKeyStates, DragDropEffects allowedEffects, DependencyObject target, Point point)
{
if (!DragDrop.IsValidDragDropKeyStates(dragDropKeyStates))
{
Debug.Assert(false, "Invalid dragDropKeyStates");
}
if (!DragDrop.IsValidDragDropEffects(allowedEffects))
{
Debug.Assert(false, "Invalid allowedEffects");
}
if (target == null)
{
Debug.Assert(false, "Invalid target");
}
this._data = data;
this._dragDropKeyStates = dragDropKeyStates;
this._allowedEffects = allowedEffects;
this._target = target;
this._dropPoint = point;
this._effects = allowedEffects;
}
private void OnDrop(object sender, DragDrop.DragEventArgs e)
{
#if SILVERLIGHT
var swimlane = e.Data as SwimlaneShapeBase;
#else
var swimlane = (e.Data as DataObject).GetData(typeof(SwimlaneShapeBase)) as SwimlaneShapeBase;
#endif
if (swimlane != null)
{
var transformedPoint = this.GetTransformedPoint(e.GetPosition(this));
var newPosition = transformedPoint.Substract(swimlane.DragStartOffset);
var oldPosition = swimlane.Position;
var mainParent = swimlane.ParentContainer as MainContainerShapeBase;
if (mainParent != null)
{
var command = new UndoableDelegateCommand("Remove container from main",
new Action<object>((o) =>
{
swimlane.Position = newPosition;
mainParent.Items.Remove(swimlane);
mainParent.UpdateChildContainers();
}),
new Action<object>((o) =>
{
swimlane.Position = oldPosition;
mainParent.Items.Add(swimlane);
mainParent.UpdateChildContainers();
}));
this.UndoRedoService.ExecuteCommand(command);
}
else
{
var command = new UndoableDelegateCommand("Remove container from main",
new Action<object>((o) =>
{
swimlane.Position = newPosition;
}),
new Action<object>((o) =>
{
swimlane.Position = oldPosition;
}));
this.UndoRedoService.ExecuteCommand(command);
}
}
}
private void OnDragEnterManager(object sender, DragDrop.DragEventArgs e)
{
if (this.GetSwimlane(e) != null)
base.OnDragEnter(new DragItemsEventArgs());
}
protected override void OnManagerDrop(object sender, DragDrop.DragEventArgs e)
{
SwimlaneShapeBase swimlane = this.GetSwimlane(e);
if (swimlane != null)
{
VisualStateManager.GoToState(this, "DropNormal", false);
var tmpCollapsed = this.IsCollapsed;
if (tmpCollapsed)
this.IsCollapsed = false;
if (swimlane != null)
this.MoveTo(swimlane, this.Items.Count);
this.TryToSelect();
this.IsCollapsed = tmpCollapsed;
e.Handled = true;
}
}
protected MainContainerShapeBase GetMainContainer(DragDrop.DragEventArgs e)
{
#if SILVERLIGHT
var mainContainer = e.Data as MainContainerShapeBase;
#else
var mainContainer = (e.Data as DataObject).GetData(typeof(MainContainerShapeBase)) as MainContainerShapeBase;
#endif
if (mainContainer == null)
{
#if SILVERLIGHT
var data = e.Data is DiagramDropInfo ? e.Data : null;
#else
var data = (e.Data as DataObject).GetData(typeof(DiagramDropInfo));
#endif
if (data != null)
{
var dropInfo = (DiagramDropInfo)data;
var items = Core.SerializationService.Default.DeserializeItems(dropInfo.Info, true);
return items.FirstOrDefault(i => i is MainContainerShapeBase) as MainContainerShapeBase;
}
}
return mainContainer;
}
protected SwimlaneShapeBase GetSwimlane(DragDrop.DragEventArgs e)
{
#if SILVERLIGHT
var swimlane = e.Data as SwimlaneShapeBase;
#else
var swimlane = (e.Data as DataObject).GetData(typeof(SwimlaneShapeBase)) as SwimlaneShapeBase;
#endif
if (swimlane == null)
{
#if SILVERLIGHT
var data = e.Data is DiagramDropInfo ? e.Data : null;
#else
var data = (e.Data as DataObject).GetData(typeof(DiagramDropInfo));
#endif
if (data != null)
{
var dropInfo = (DiagramDropInfo)data;
var items = Core.SerializationService.Default.DeserializeItems(dropInfo.Info, true);
return items.FirstOrDefault(i => i is SwimlaneShapeBase) as SwimlaneShapeBase;
}
}
return swimlane;
}
private void OnDragLeaveManager(object sender, DragDrop.DragEventArgs e)
{
if (this.GetSwimlane(e) != null)
{
this.swimlaneDiagram.HideDragOverVisual();
}
else if (this.GetMainContainer(e) == null)
{
base.OnDragLeave(new DragItemsEventArgs());
}
}
protected override void OnManagerDrop(object sender, DragDrop.DragEventArgs e)
{
this.swimlaneDiagram.HideDragOverVisual();
SwimlaneShapeBase swimlane = this.GetSwimlane(e);
if (swimlane != null && this != swimlane)
{
if (this.ParentMainContainer == null) return;
var transformedPoint = (this.Diagram as RadDiagram).GetTransformedPoint(e.GetPosition(this.Diagram as UIElement));
this.ParentMainContainer.MoveTo(swimlane, this.ContainerPosition);
if (swimlane.IsPointOverHeaderElement(transformedPoint))
swimlane.keepBackground = true;
e.Handled = true;
}
else if (this.GetMainContainer(e) == null)
{
base.OnManagerDrop(sender, e);
}
}