//private readonly Popup popup = new Popup();
//private Point dragLocation;
private DragDropTargetAdapter(IDragDropTarget targetHandler, DependencyObject target, bool makeDroppable)
{
this.targetHandler = targetHandler;
this.target = target;
this.dragTargetHandler = DragDrop.GetDragDropUITargetHandler(target.GetType()).Create(target, this, makeDroppable);
System.Windows.DragDrop.AddDragEnterHandler(this.target, this.DragEnter);
System.Windows.DragDrop.AddDragLeaveHandler(this.target, this.DragLeave);
System.Windows.DragDrop.AddDragOverHandler(this.target, this.DragOver);
System.Windows.DragDrop.AddDropHandler(this.target, this.Drop);
/*
* this.popup.AllowsTransparency = true;
* ContentControl Content = new ContentControl();
* Content.SetBinding(ContentControl.ContentProperty, "");
* Border Border = new Border();
* Border.BorderThickness = new Thickness(1);
* Border.CornerRadius = new CornerRadius(3);
* Border.BorderBrush = new SolidColorBrush(SystemColors.HighlightColor) { Opacity = 0.7 };
* Border.Background = new SolidColorBrush(SystemColors.HighlightColor) {Opacity = 0.3};
* Border.Child = Content;
* Border.MinHeight = 10;
* Border.MinWidth = 10;
* this.popup.Child = Border;
* this.popup.Placement = PlacementMode.Custom;
* this.popup.CustomPopupPlacementCallback = this.HandlePopupPlacement;
* this.popup.HorizontalOffset = 10;
* this.popup.VerticalOffset = 10;*/
}
/// <summary>
/// Notifies the handler, that a drag operation has started above the control
/// </summary>
/// <param name="effect"></param>
public void NotifyDragStarted(DragDropEffect effect)
{
TabPanel TabPanel = this.element.GetVisualDescendantsDepthFirst <TabPanel>().FirstOrDefault();
if (TabPanel != null)
{
IDragDropUiTargetHandler Handler = DragDrop.GetDragDropUITargetHandler(TabPanel.GetType());
if (Handler != null)
{
this.panelTargetHandler = Handler.Create(TabPanel, this.adapter, false);
}
}
if (this.panelTargetHandler == null)
{
this.panelTargetHandler = new DummyUiHandler();
}
this.panelTargetHandler.NotifyDragStarted(effect);
}
/// <summary>
/// Notifies the handler, that a drag operation has started above the control
/// </summary>
/// <param name="effect"></param>
public void NotifyDragStarted(DragDropEffect effect)
{
ItemsPresenter ItemsPresenter = this.element.GetVisualDescendantsDepthFirst <ItemsPresenter>().FirstOrDefault();
if (ItemsPresenter != null)
{
Panel ItemsPanel = VisualTreeHelper.GetChild(ItemsPresenter, 0) as Panel;
if (ItemsPanel != null)
{
IDragDropUiTargetHandler Handler = DragDrop.GetDragDropUITargetHandler(ItemsPanel.GetType());
if (Handler != null)
{
this.panelTargetHandler = Handler.Create(ItemsPanel, this.adapter, false);
}
}
}
if (this.panelTargetHandler == null)
{
this.panelTargetHandler = new DummyUiHandler();
}
this.panelTargetHandler.NotifyDragStarted(effect);
}
/// <summary>
/// Notifies the handler, that a drag operation has ended above the control, either because
/// the item was dropped, or because the mouse left the controls area
/// </summary>
public void NotifyDragEnded()
{
this.panelTargetHandler.NotifyDragEnded();
this.panelTargetHandler.Dispose();
this.panelTargetHandler = null;
}
