private void DropTargetContainer_MouseLeave(object sender, MouseEventArgs e)
{
if (!DragManager.IsDragging)
{
return;
}
DragManager.UpdateDropTarget(null);
}
private void Designer_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (!e.Handled)
{
DragManager.Drop();
e.Handled = true;
}
}
private void DropTargetContainer_MouseMove(object sender, MouseEventArgs e)
{
if (!DragManager.IsDragging || e.OriginalSource != sender)
{
return;
}
var dropTarget = this.dropTarget.GetDropLocation(e.GetPosition(DropTargetContainer));
DragManager.UpdateDropTarget(dropTarget);
}
private void DragSourceContainer_MouseLeave(object sender, MouseEventArgs e)
{
var coordinates = Coordinates(e);
if (DragManager.DragCandidate != null &&
DragManager.DragCandidateSponsor == DragSource &&
!DragManager.IsDragging)
{
SelectionManager.ClearSelection();
DragSource.StartDrag(DragManager.DragCandidate);
DragManager.MouseMove(e.GetPosition(Designer.Instance.Canvas));
}
}
public override void StartDrag(UIElement underCursor)
{
ToolboxItem item = underCursor as ToolboxItem;
if (item == null)
{
return;
}
var copy = Factory.CreateControl(item.Title);
DragManager.StartDrag(this, underCursor);
DragManager.DraggedElement = copy;
}
private void DragSourceContainer_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
// this entire handler only makes sense if we have a drag candidate
if (DragManager.DragCandidate == null || DragManager.DragCandidateSponsor == null)
{
return;
}
var coordinates = Coordinates(e);
if (DragSource is ISupportSelection &&
(DragSource as ISupportSelection).IsSelectionAllowed(DragManager.DragCandidate) &&
coordinates.Distance(mouseDownCoordinates) < 15 &&
!DragManager.IsDragging)
{
DragManager.DragCandidateSponsor.Select(DragManager.DragCandidate);
}
DragManager.ResetDragCandidate();
}
public virtual void StartDrag(UIElement result)
{
DragManager.StartDrag(this, result);
}
private void DropTargetContainer_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
DragManager.Drop();
e.Handled = true;
}
private void Designer_MouseMove(object sender, MouseEventArgs e)
{
DragManager.MouseMove(e.GetPosition(this));
}