private void OnDragOver(object sender, Telerik.Windows.DragDrop.DragEventArgs e)
{
object sourceItem = DragDropPayloadManager.GetDataFromObject(e.Data, __dragSource);
TreeListViewRow destinationRow = (e.OriginalSource as TreeListViewRow) ?? (e.OriginalSource as FrameworkElement).ParentOfType <TreeListViewRow>();
GridViewScrollViewer destinationTree = (e.OriginalSource as GridViewScrollViewer) ?? (e.OriginalSource as FrameworkElement).ParentOfType <GridViewScrollViewer>();
if (destinationRow != null && destinationRow.Item != sourceItem)
{
e.Effects = !IsChildOf(destinationRow, sourceItem) ? DragDropEffects.Move : DragDropEffects.None;
if (e.Effects == DragDropEffects.Move)
{
DragDropPayloadManager.SetData(e.Data, __dragTarget, destinationRow.Item);
}
}
else if (destinationTree != null)
{
DragDropPayloadManager.SetData(e.Data, __dragTarget, string.Empty);
}
else
{
e.Effects = DragDropEffects.None;
}
e.Handled = true;
}
private void OnDrop(object sender, Telerik.Windows.DragDrop.DragEventArgs e)
{
var data = DragDropPayloadManager.GetDataFromObject(e.Data, typeof(string).FullName);
((IList)(sender as RadListBox).ItemsSource).Add(data);
DragDropPayloadManager.SetData(e.Data, "IsDropSuccessful", true);
e.Handled = true;
}
private void OnDragInitialize(object sender, DragInitializeEventArgs e)
{
TreeListViewRow sourceRow = (e.OriginalSource as TreeListViewRow) ?? (e.OriginalSource as FrameworkElement).ParentOfType <TreeListViewRow>();
if (sourceRow != null)
{
IDragPayload dataObject = DragDropPayloadManager.GeneratePayload(null);
DragDropPayloadManager.SetData(dataObject, __dragSource, sourceRow.Item);
e.Data = dataObject;
}
}
private void OnDragInitialize(object sender, DragInitializeEventArgs e)
{
var sourceRow = (e.OriginalSource as TreeListViewRow) ?? (e.OriginalSource as FrameworkElement).ParentOfType <TreeListViewRow>();
if (sourceRow != null)
{
var dataObject = DragDropPayloadManager.GeneratePayload(null);
var draggedItem = sourceRow.Item;
DragDropPayloadManager.SetData(dataObject, "DragData", new Collection <object>()
{
draggedItem
});
e.Data = dataObject;
// TODO: Cleanup. The "if" statement is to patch a problem with the ObjectAssociation collection. Quick and Dirty
if ((sender as RadTreeListView).Name != "ObjectAssociationTreeListView")
{
var screenshotVisualProvider = new ScreenshotDragVisualProvider();
e.DragVisual = screenshotVisualProvider.CreateDragVisual(new DragVisualProviderState(e.RelativeStartPoint, new List <object>()
{
draggedItem
}, new List <DependencyObject>()
{
sourceRow
}, sender as FrameworkElement));
e.DragVisualOffset = new Point(0, 0);
this.originalSource = sourceRow.Item;
this.sourceCollection = sourceRow.ParentRow != null ? (IList)sourceRow.ParentRow.Items.SourceCollection : (IList)sourceRow.GridViewDataControl.ItemsSource;
}
// In case the item is dragged to a different tree, populate the DraggedModel object with the dragged data
// so it can be picked up by the destination tree
if (Globals.DraggedItem == null)
{
Globals.DraggedItem = new DragModel();
}
switch ((sender as RadTreeListView).Name)
{
case "ObjectTreeListView":
Globals.DraggedItem.Type = "Object";
Globals.DraggedItem.ObjectModelSource = draggedItem as ObjectModel;
break;
case "TemplateTreeListView":
Globals.DraggedItem.Type = "Template";
Globals.DraggedItem.TemplateModelSource = draggedItem as TemplateModel;
break;
case "PropertyTreeListView":
Globals.DraggedItem.Type = "Property";
Globals.DraggedItem.PropertyModelSource = draggedItem as PropertyModel;
break;
case "RequirementTreeListView":
Globals.DraggedItem.Type = "Requirement";
Globals.DraggedItem.RequirementModelSource = draggedItem as RequirementModel;
break;
case "ObjectAssociationTreeListView":
Globals.DraggedItem.Type = "ObjectAssociation";
Globals.DraggedItem.ObjectAssociationModelSource = draggedItem as ObjectAssociationModel;
break;
case "ObjectRequirementTreeListView":
Globals.DraggedItem.Type = "ObjectRequirement";
Globals.DraggedItem.ObjectRequirementModelSource = draggedItem as ObjectRequirementModel;
break;
case "AspectListView":
Globals.DraggedItem.Type = "Aspect";
Globals.DraggedItem.AspectModelSource = draggedItem as AspectModel;
break;
case "AttributeListView":
Globals.DraggedItem.Type = "Attribute";
Globals.DraggedItem.AttributeModelSource = draggedItem as AttributeModel;
break;
default:
break;
}
;
}
}