void FinishDragOperation(ListViewItem draggedItem, AdornerLayer adornerLayer)
{
// Let the ListViewItem know that it is not being dragged anymore.
ListViewItemDragState.SetIsBeingDragged(draggedItem, false);
this.IsDragInProgress = false;
if (this.ItemUnderDragCursor != null)
{
this.ItemUnderDragCursor = null;
}
// Remove the drag adorner from the adorner layer.
if (adornerLayer != null)
{
adornerLayer.Remove(this.dragAdorner);
this.dragAdorner = null;
}
if (ListViewDragDropManager <ItemType> .itemInDrag != null)
{
ListViewDragDropManager <ItemType> .itemInDrag = null;
}
beginDragLoc = new Point(-10000, -10000);
}
void InitializeDragOperation(ListViewItem itemToDrag)
{
// Set some flags used during the drag operation.
this.IsDragInProgress = true;
this.canInitiateDrag = false;
// Let the ListViewItem know that it is being dragged.
ListViewItemDragState.SetIsBeingDragged(itemToDrag, true);
}
void InitializeDragOperation(ListViewItem itemToDrag)
{
// Set some flags used during the drag operation.
this.IsDragInProgress = true;
this.canInitiateDrag = false;
Border border = (Border)VisualTreeHelper.GetChild(listView, 0);
ScrollViewer scrollViewer = VisualTreeHelper.GetChild(border, 0) as ScrollViewer;
this.ptScrollStart = new Point(0, 0);
if (scrollViewer != null)
{
this.ptScrollStart = new Point(scrollViewer.HorizontalOffset, scrollViewer.VerticalOffset);
}
// Let the ListViewItem know that it is being dragged.
ListViewItemDragState.SetIsBeingDragged(itemToDrag, true);
}
void FinishDragOperation(ListViewItem draggedItem, AdornerLayer adornerLayer)
{
// Let the ListViewItem know that it is not being dragged anymore.
ListViewItemDragState.SetIsBeingDragged(draggedItem, false);
this.IsDragInProgress = false;
if (this.ItemUnderDragCursor != null)
{
this.ItemUnderDragCursor = null;
}
// Remove the drag adorner from the adorner layer.
if (adornerLayer != null)
{
adornerLayer.Remove(this.dragAdorner);
this.dragAdorner = null;
}
}
void FinishDragOperation(ListViewItem draggedItem, AdornerLayer adornerLayer, bool isDragFullyFinished)
{
// Let the ListViewItem know that it is not being dragged anymore.
ListViewItemDragState.SetIsBeingDragged(draggedItem, false);
this.IsDragInProgress = false;
if (this.ItemUnderDragCursor != null)
{
this.ItemUnderDragCursor = null;
}
// Remove the drag adorner from the adorner layer.
if (adornerLayer != null)
{
adornerLayer.Remove(this.dragAdorner);
this.dragAdorner = null;
}
if (IsDeleteSourceItem && isDragFullyFinished && this.listView.ItemsSource is ObservableCollection <ItemType> collection)
{
collection.RemoveAt(this.listView.SelectedIndex);
}
}
