private void OnApplicationTreeDragOver(object sender, Telerik.Windows.DragDrop.DragEventArgs e)
{
var options = DragDropPayloadManager.GetDataFromObject(e.Data, TreeViewDragDropOptions.Key) as TreeViewDragDropOptions;
if (options == null)
{
return;
}
// The condition after the first OR operator is needed to deny the drop of items in Application File. (sub-items)
RadTreeViewItem dropTargetItem = options.DropTargetItem;
var draggedItem = options.DraggedItems.First();
if (dropTargetItem == null ||
(dropTargetItem != null &&
options.DropTargetItem.DataContext is Resource &&
options.DropPosition == DropPosition.Inside) ||
draggedItem is PartitionViewModel)
{
options.DropAction = DropAction.None;
}
options.UpdateDragVisual();
}
private void OnRowDragOver(object sender, Telerik.Windows.DragDrop.DragEventArgs e)
{
var row = sender as GridViewRow;
var details = DragDropPayloadManager.GetDataFromObject(e.Data, "DropDetails") as DropIndicationDetails;
if (details == null || row == null)
{
return;
}
details.CurrentDraggedOverItem = row.DataContext;
if (details.CurrentDraggedItem == details.CurrentDraggedOverItem)
{
e.Effects = DragDropEffects.None;
e.Handled = true;
return;
}
details.CurrentDropPosition = GetDropPositionFromPoint(e.GetPosition(row), row);
int dropIndex = (this.AssociatedObject.Items as IList).IndexOf(row.DataContext);
int draggedItemIdex = (this.AssociatedObject.Items as IList).IndexOf(DragDropPayloadManager.GetDataFromObject(e.Data, "DraggedItem"));
if (dropIndex >= row.GridViewDataControl.Items.Count - 1 && details.CurrentDropPosition == DropPosition.After)
{
details.DropIndex = dropIndex;
this.ShowDropPositionFeedbackPresenter(this.AssociatedObject, row, details.CurrentDropPosition);
return;
}
dropIndex = draggedItemIdex > dropIndex ? dropIndex : dropIndex - 1;
details.DropIndex = details.CurrentDropPosition == DropPosition.Before ? dropIndex : dropIndex + 1;
this.ShowDropPositionFeedbackPresenter(this.AssociatedObject, row, details.CurrentDropPosition);
}
private void OnDrop(object sender, Telerik.Windows.DragDrop.DragEventArgs e)
{
var draggedItem = DragDropPayloadManager.GetDataFromObject(e.Data, "DraggedItem");
var details = DragDropPayloadManager.GetDataFromObject(e.Data, "DropDetails") as DropIndicationDetails;
if (details == null || draggedItem == null)
{
return;
}
if (e.Effects == DragDropEffects.Move || e.Effects == DragDropEffects.All)
{
((sender as RadGridView).ItemsSource as IList).Remove(draggedItem);
}
if (e.Effects != DragDropEffects.None)
{
var collection = (sender as RadGridView).ItemsSource as IList;
int index = details.DropIndex < 0 ? 0 : details.DropIndex;
index = details.DropIndex > collection.Count - 1 ? collection.Count : index;
collection.Insert(index, draggedItem);
}
HideDropPositionFeedbackPresenter();
}
// Forbids the local machine tree view to drop anything
private void OnLocalMachineTreeDragOver(object sender, Telerik.Windows.DragDrop.DragEventArgs e)
{
var options = DragDropPayloadManager.GetDataFromObject(e.Data, TreeViewDragDropOptions.Key) as TreeViewDragDropOptions;
if (options != null)
{
options.DropAction = DropAction.None;
options.UpdateDragVisual();
e.Handled = true;
}
}
private void OnApplicationTreeDrop(object sender, Telerik.Windows.DragDrop.DragEventArgs e)
{
var options = DragDropPayloadManager.GetDataFromObject(e.Data, TreeViewDragDropOptions.Key) as TreeViewDragDropOptions;
if (options == null)
{
return;
}
MediaFile draggedItem = options.DraggedItems.FirstOrDefault() as MediaFile;
if (draggedItem == null)
{
return;
}
RadTreeViewItem dropTargetItem = options.DropTargetItem;
if (dropTargetItem == null)
{
return;
}
var dropItemModel = dropTargetItem.DataContext;
if (dropItemModel == null)
{
return;
}
var dropTree = sender as RadTreeView;
if (dropTree != null)
{
// Disable drop in Application File.
if (dropItemModel is Resource && options.DropAction == DropAction.None)
{
e.Handled = true;
return;
}
// Drop in Application.
if (dropItemModel is ApplicationViewModel || dropItemModel is Resource)
{
options.DropAction = DropAction.Copy;
options.UpdateDragVisual();
ApplicationViewModel destinationFolder = null;
if (dropItemModel is ApplicationViewModel)
{
// Dropping inside Application.
destinationFolder = dropItemModel as ApplicationViewModel;
}
else
{
// Dropping Before or After an Application Resource.
destinationFolder = options.DropTargetItem.ParentItem.DataContext as ApplicationViewModel;
}
if (destinationFolder == null)
{
return;
}
Resource file = new Resource()
{
ImageFilePath = new System.Windows.Media.Imaging.BitmapImage(new Uri(draggedItem.ImageFilePath, UriKind.RelativeOrAbsolute)),
Title = draggedItem.ImageTitle
};
destinationFolder.Resources.Add(file);
}
}
}
