internal DropTargetAdorner CreateTest(Type type, UIElement adornedElement)
{
DropTargetAdorner result = DropTargetAdorner.Create(type, adornedElement);
return(result);
// TODO: add assertions to method DropTargetAdornerTest.CreateTest(Type, UIElement)
}
private static void DragSourceOnQueryContinueDrag(object sender, QueryContinueDragEventArgs e)
{
if (e.Action == DragAction.Cancel || e.EscapePressed)
{
DragAdorner = null;
EffectAdorner = null;
DropTargetAdorner = null;
Mouse.OverrideCursor = null;
}
}
private static void OnPreviewDrop(object sender, DragEventArgs e)
{
var dropInfo = new DropInfo(sender, e, _dragInfo, Format.Name);
var dropHandler = GetDropHandler((UIElement)sender);
DragAdorner = null;
DropTargetAdorner = null;
if (dropHandler != null)
{
dropHandler.Drop(dropInfo);
}
else
{
DefaultDropHandler.Drop(dropInfo);
}
e.Handled = true;
}
private static void DropTargetOnDrop(object sender, DragEventArgs e, EventType eventType)
{
var dragInfo = m_DragInfo;
var dropInfo = new DropInfo(sender, e, dragInfo, eventType);
var dropHandler = TryGetDropHandler(dropInfo, sender as UIElement);
var dragHandler = TryGetDragHandler(dragInfo, sender as UIElement);
DragAdorner = null;
EffectAdorner = null;
DropTargetAdorner = null;
dropHandler.DragOver(dropInfo);
dropHandler.Drop(dropInfo);
dragHandler.Dropped(dropInfo);
e.Effects = dropInfo.Effects;
e.Handled = !dropInfo.NotHandled;
Mouse.OverrideCursor = null;
}
private static void UpdateTargetDropAdorner(DependencyObject target, IDropInfo dropInfo)
{
UIElement adornedElement = target.GetVisualDescendent <ItemsPresenter>();
if (dropInfo.DropTargetAdorner == null)
{
DropTargetAdorner = null;
}
else if (!dropInfo.DropTargetAdorner.IsInstanceOfType(DropTargetAdorner))
{
DropTargetAdorner = DropTargetAdorner.Create(dropInfo.DropTargetAdorner, adornedElement);
}
if (DropTargetAdorner == null)
{
return;
}
DropTargetAdorner.DropInfo = dropInfo;
DropTargetAdorner.InvalidateVisual();
}
private static void DropTargetOnDragOver(object sender, DragEventArgs e, EventType eventType)
{
var elementPosition = e.GetPosition((IInputElement)sender);
var dragInfo = m_DragInfo;
var dropInfo = new DropInfo(sender, e, dragInfo, eventType);
var dropHandler = TryGetDropHandler(dropInfo, sender as UIElement);
var itemsControl = dropInfo.VisualTarget;
dropHandler.DragOver(dropInfo);
if (DragAdorner == null && dragInfo != null)
{
CreateDragAdorner(dropInfo);
}
// Moves DragAdorner following with mouse point
DragAdorner?.Move(e.GetPosition(DragAdorner.AdornedElement), dragInfo != null ? GetDragMouseAnchorPoint(dragInfo.VisualSource) : default(Point), ref _adornerMousePosition, ref _adornerSize);
Scroll(dropInfo, e);
if (HitTestUtilities.HitTest4Type <ScrollBar>(sender, elementPosition) ||
HitTestUtilities.HitTest4GridViewColumnHeader(sender, elementPosition) ||
HitTestUtilities.HitTest4DataGridTypesOnDragOver(sender, elementPosition))
{
e.Effects = DragDropEffects.None;
e.Handled = true;
return;
}
// If the target is an ItemsControl then update the drop target adorner.
if (itemsControl != null)
{
// Display the adorner in the control's ItemsPresenter. If there is no
// ItemsPresenter provided by the style, try getting hold of a
// ScrollContentPresenter and using that.
UIElement adornedElement = null;
if (itemsControl is TabControl)
{
adornedElement = itemsControl.FindVisualChild <TabPanel>();
}
else if (itemsControl is DataGrid || (itemsControl as ListView)?.View is GridView)
{
adornedElement = itemsControl.FindVisualChild <ScrollContentPresenter>() ?? itemsControl.FindVisualChild <ItemsPresenter>() ?? itemsControl;
}
else
{
adornedElement = itemsControl.FindVisualChild <ItemsPresenter>() ?? itemsControl.FindVisualChild <ScrollContentPresenter>() ?? itemsControl;
}
if (adornedElement != null)
{
if (dropInfo.DropTargetAdorner == null)
{
DropTargetAdorner = null;
}
else if (!dropInfo.DropTargetAdorner.IsInstanceOfType(DropTargetAdorner))
{
DropTargetAdorner = DropTargetAdorner.Create(dropInfo.DropTargetAdorner, adornedElement, dropInfo);
}
var adorner = DropTargetAdorner;
if (adorner != null)
{
var adornerBrush = GetDropTargetAdornerBrush(dropInfo.VisualTarget);
if (adornerBrush != null)
{
adorner.Pen.Brush = adornerBrush;
}
adorner.DropInfo = dropInfo;
adorner.InvalidateVisual();
}
}
}
// Set the drag effect adorner if there is one
if (dragInfo != null && (EffectAdorner == null || EffectAdorner.Effects != dropInfo.Effects))
{
CreateEffectAdorner(dropInfo);
}
EffectAdorner?.Move(e.GetPosition(EffectAdorner.AdornedElement), default(Point), ref _effectAdornerMousePosition, ref _effectAdornerSize);
e.Effects = dropInfo.Effects;
e.Handled = !dropInfo.NotHandled;
if (!dropInfo.IsSameDragDropContextAsSource)
{
e.Effects = DragDropEffects.None;
}
}
/// <summary>
/// Raise when dragging item leave drop target control
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private static void DropTargetOnDragLeave(object sender, DragEventArgs e)
{
DragAdorner = null;
EffectAdorner = null;
DropTargetAdorner = null;
}
public void DetachTest([PexAssumeNotNull] DropTargetAdorner target)
{
target.Detach();
// TODO: add assertions to method DropTargetAdornerTest.DetachTest(DropTargetAdorner)
}
private static void OnPreviewDragLeave(object sender, DragEventArgs e)
{
DragAdorner = null;
DropTargetAdorner = null;
}
