public virtual void Drop(DropInfo dropInfo)
{
int insertIndex = dropInfo.InsertIndex;
IList destinationList = GetList(dropInfo.TargetCollection);
IEnumerable data = ExtractData(dropInfo.Data);
if (dropInfo.DragInfo.VisualSource == dropInfo.VisualTarget)
{
IList sourceList = GetList(dropInfo.DragInfo.SourceCollection);
foreach (object o in data)
{
int index = sourceList.IndexOf(o);
if (index != -1)
{
sourceList.RemoveAt(index);
if (sourceList == destinationList && index < insertIndex)
{
--insertIndex;
}
}
}
}
foreach (object o in data)
{
destinationList.Insert(insertIndex++, o);
}
}
public virtual void DragOver(DropInfo dropInfo)
{
if (CanAcceptData(dropInfo))
{
dropInfo.Effects = DragDropEffects.Copy;
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
}
}
protected static bool CanAcceptData(DropInfo dropInfo)
{
if (dropInfo.DragInfo.SourceCollection == dropInfo.TargetCollection)
{
return GetList(dropInfo.TargetCollection) != null;
}
else if (dropInfo.DragInfo.SourceCollection is ItemCollection)
{
return false;
}
else
{
if (TestCompatibleTypes(dropInfo.TargetCollection, dropInfo.Data))
{
return !IsChildOf(dropInfo.VisualTargetItem, dropInfo.DragInfo.VisualSourceItem);
}
else
{
return false;
}
}
}
static void DropTarget_PreviewDrop(object sender, DragEventArgs e)
{
DropInfo dropInfo = new DropInfo(sender, e, m_DragInfo, m_Format.Name);
IDropTarget dropHandler = GetDropHandler((UIElement)sender);
DragAdorner = null;
DropTargetAdorner = null;
if (dropHandler != null)
{
dropHandler.Drop(dropInfo);
}
else
{
DefaultDropHandler.Drop(dropInfo);
}
e.Handled = true;
}
static void DropTarget_PreviewDragOver(object sender, DragEventArgs e)
{
DropInfo dropInfo = new DropInfo(sender, e, m_DragInfo, m_Format.Name);
IDropTarget dropHandler = GetDropHandler((UIElement)sender);
if (dropHandler != null)
{
dropHandler.DragOver(dropInfo);
}
else
{
DefaultDropHandler.DragOver(dropInfo);
}
// Update the drag adorner.
if (dropInfo.Effects != DragDropEffects.None)
{
if (DragAdorner == null && m_DragInfo != null)
{
CreateDragAdorner();
}
if (DragAdorner != null)
{
DragAdorner.MousePosition = e.GetPosition(DragAdorner.AdornedElement);
DragAdorner.InvalidateVisual();
}
}
else
{
DragAdorner = null;
}
// If the target is an ItemsControl then update the drop target adorner.
if (sender is ItemsControl)
{
UIElement adornedElement = ((ItemsControl)sender).GetVisualDescendent<ItemsPresenter>();
if (dropInfo.DropTargetAdorner == null)
{
DropTargetAdorner = null;
}
else if (!dropInfo.DropTargetAdorner.IsInstanceOfType(DropTargetAdorner))
{
DropTargetAdorner = DropTargetAdorner.Create(dropInfo.DropTargetAdorner, adornedElement);
}
if (DropTargetAdorner != null)
{
DropTargetAdorner.DropInfo = dropInfo;
DropTargetAdorner.InvalidateVisual();
}
}
e.Effects = dropInfo.Effects;
e.Handled = true;
Scroll((DependencyObject)sender, e);
}
void IDropTarget.Drop(DropInfo dropInfo)
{
DirectoryViewModel sourceItem = (DirectoryViewModel)dropInfo.Data;
//OriginalImage targetItem = (OriginalImage)dropInfo.TargetItem;
//Uri uri = new Uri("pack://application:,,,/Views/Images/image.png");
string name = "";
if (sourceItem.IsDirectory)
{
// Circular progress Bar is called when we drop a directory
this.IsCircularProgressBarVisible = "Visible";
this.IsAlgorithmsEnabled = false;
this._vmain.circularProgressBar.StartDelay();
List<string> droppedImages = null; ;
// Thread that get the directory files recursive
Thread progressThread = new Thread(delegate()
{
try
{
droppedImages = FileHelper.GetFilesRecursive(sourceItem.FullName);
this._vmain.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.DataBind, (SendOrPostCallback)delegate
{
//Disable Circular progress Bar because the directory drop is done
this.IsCircularProgressBarVisible = "Hidden";
this._vmain.circularProgressBar.StopSpinning();
this.IsAlgorithmsEnabled = true;
for (int i = 0; i < droppedImages.Count; i++)
{
name = "img" + this._oimages.Count.ToString(); // +"-o";
this._oimages.Add(new OriginalCollectionViewModel(new ImageModel(name, droppedImages[i]), false));
}
}, null);
}
catch (Exception e)
{
//
}
});
progressThread.Priority = ThreadPriority.Highest;
progressThread.Start();
}
else
{
name = "img" + this._oimages.Count.ToString(); // +"-o";
this._oimages.Add(new OriginalCollectionViewModel(new ImageModel(name, sourceItem.FullName), false));
}
}
void IDropTarget.DragOver(DropInfo dropInfo)
{
DirectoryViewModel sourceItem = dropInfo.Data as DirectoryViewModel;
//OriginalImage targetItem = dropInfo.TargetItem as OriginalImage;
if (sourceItem != null)
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Highlight;
dropInfo.Effects = DragDropEffects.Copy;
}
}