private void Start()
{
if (_panelAdorner != null || _draggingContainer == null)
{
return;
}
if (_adornerLayer == null)
{
_adornerLayer = AdornerLayer.GetAdornerLayer(_treeView);
}
if (_panelAdorner == null)
{
_panelAdorner = GetPanelAdorner(_treeView, _draggingContainer);
_adornerLayer.Add(_panelAdorner);
_draggingContainer.Opacity = 0.2;
}
DragDrop.AddQueryContinueDragHandler(_treeView, OnQueryContinueDrag);
DragDrop.DoDragDrop(_treeView, _draggingContainer.DataContext, DragDropEffects.Move);
DragDrop.RemoveQueryContinueDragHandler(_treeView, OnQueryContinueDrag);
End();
}
private void EndDrag()
{
RootAdornerLayer.Remove(_panelAdorner);
_panelAdorner = null;
_dragedChild.Opacity = 1;
_dragedChild = null;
}
private MousePanelAdorner GetPanelAdorner(UIElement panel, UIElement draggedChild)
{
if (_panelAdorner == null)
{
_panelAdorner = ConstructMousePanelAdorner(panel, draggedChild);
}
return(_panelAdorner);
}
private void EndDrag()
{
AssociatedObject.PreviewMouseMove -= OnMouseMove;
RootAdornerLayer.Remove(_panelAdorner);
_panelAdorner = null;
_dragedChild.Opacity = 1;
_dragedChild = null;
}
private void End()
{
_treeView.PreviewMouseMove -= OnMouseMove;
_adornerLayer.Remove(_panelAdorner);
_panelAdorner = null;
_draggingContainer.Opacity = 1;
_draggingContainer = null;
_lastDraggingRect = null;
}
//End Drag
private void EndDrag()
{
treeView.PreviewMouseMove -= OnMouseMove;
_adornerLayer.Remove(_panelAdorner);
_panelAdorner = null;
_draggingContainer.Opacity = 1;
_draggingContainer = null;
_lastOverlapContainer = null;
_startOverlapTime = DateTime.MinValue;
}
//Start Darg
private void StartDrag()
{
if (_panelAdorner != null || _draggingContainer == null)
{
return;
}
if (_panelAdorner == null)
{
_draggingContainer.Tag = 1;
_panelAdorner = GetPanelAdorner(treeView, _draggingContainer);
_draggingContainer.Tag = 0;
_adornerLayer.Add(_panelAdorner);
_draggingContainer.Opacity = 0.2;
}
DragDrop.AddQueryContinueDragHandler(treeView, OnQueryContinueDrag);
DragDrop.DoDragDrop(treeView, _draggingContainer, DragDropEffects.Move);
DragDrop.RemoveQueryContinueDragHandler(treeView, OnQueryContinueDrag);
EndDrag();
}