public override IDropAction CreateInstance(DragDropContext context)
{
this.CheckNullArgument((object)context, "context");
TypeAsset result1 = (TypeAsset)null;
if (DragSourceHelper.FirstDataOfType <TypeAsset>(context.Data, ref result1) && PlatformTypes.IsEffectType((ITypeId)result1.Type))
{
ISceneInsertionPoint insertionPoint = this.GetInsertionPoint((object)result1, context);
if (insertionPoint != null)
{
return((IDropAction) new DropEffectAssetAction(result1, insertionPoint));
}
}
DocumentNodeMarkerSortedList result2 = (DocumentNodeMarkerSortedList)null;
if (DragSourceHelper.FirstDataOfType <DocumentNodeMarkerSortedList>(context.Data, ref result2) && result2.Count == 1)
{
DocumentNodeMarker marker = result2.MarkerAt(0);
if (marker != null && marker.Node != null && PlatformTypes.IsEffectType((ITypeId)marker.Node.Type))
{
SceneViewModel viewModel = context.Target.TimelineItemManager.ViewModel;
SceneNode sceneNode = SceneNode.FromMarker <SceneNode>(marker, viewModel);
if (sceneNode != null)
{
ISceneInsertionPoint insertionPoint = this.GetInsertionPoint((object)sceneNode, context);
if (insertionPoint != null)
{
return((IDropAction) new DropEffectSceneNodeAction(sceneNode, insertionPoint));
}
}
}
}
return((IDropAction)null);
}
private void SetSource(TimelineDragDescriptor descriptor)
{
DocumentNodeMarkerSortedList result1 = (DocumentNodeMarkerSortedList)null;
if (DragSourceHelper.FirstDataOfType <DocumentNodeMarkerSortedList>(descriptor.SourceObject, ref result1))
{
if (result1.Count == 1 && descriptor.TargetItem != null)
{
if (!this.SetSource((object)descriptor.TargetItem.TimelineItemManager.ViewModel.GetSceneNode(result1.MarkerAt(0).Node)))
{
;
}
}
else
{
this.SourceName = string.Format((IFormatProvider)CultureInfo.CurrentCulture, StringTable.DragMultipleItemsFormat, new object[1]
{
(object)result1.Count
});
this.SourceType = string.Empty;
}
}
else
{
Asset result2 = (Asset)null;
if (DragSourceHelper.FirstDataOfType <Asset>(descriptor.SourceObject, ref result2) && this.SetSource((object)result2))
{
return;
}
DataSchemaNodePathCollection result3 = (DataSchemaNodePathCollection)null;
if (DragSourceHelper.FirstDataOfType <DataSchemaNodePathCollection>(descriptor.SourceObject, ref result3))
{
this.SetDataBinding(descriptor.UserData as DataBindingDragDropModel);
}
else
{
this.SourceName = this.SourceType = string.Empty;
}
}
}
private void RecalculateBasisNode(int index)
{
SceneNodeSubscription <basisT, pathT> .BasisNodeHolder basisNodeHolder = this.basisNodeList.ValueAt(index);
if ((int)this.currentViewModel.XamlDocument.ChangeStamp == (int)basisNodeHolder.lastRecalcChangeStamp)
{
return;
}
SceneNodeSubscription <basisT, pathT> .BasisNodeInfo basisNodeInfo = this.BasisNodeAt(index);
DocumentNodeMarkerSortedList markerSortedList = basisNodeHolder.PathNodeList;
basisNodeHolder.PathNodeList = SceneNode.GetMarkerList <SceneNode>(this.path.Query(basisNodeHolder.Node), true);
foreach (DocumentNodeMarkerSortedListBase.IntersectionResult intersectionResult in markerSortedList.UnionIdentity((DocumentNodeMarkerSortedListBase)basisNodeHolder.PathNodeList))
{
if (intersectionResult.RightHandSideIndex == -1)
{
this.RemovePathNode(basisNodeInfo, this.pathNodeList.FindPosition(markerSortedList.MarkerAt(intersectionResult.LeftHandSideIndex)));
}
else if (intersectionResult.LeftHandSideIndex == -1)
{
DocumentNodeMarker newMarker = basisNodeHolder.PathNodeList.MarkerAt(intersectionResult.RightHandSideIndex);
this.AddPathNode(basisNodeInfo, newMarker);
}
}
basisNodeHolder.lastRecalcChangeStamp = this.currentViewModel.XamlDocument.ChangeStamp;
}