private DragDropEffects ComputeDropEffects(DragEventArgs e)
{
if (this.TargetItem != null)
{
TimelineDropEffects requestedEffects1 = TimelineDropEffects.None;
if ((e.AllowedEffects & DragDropEffects.Copy) != DragDropEffects.None && (e.KeyStates & DragDropKeyStates.ControlKey) != DragDropKeyStates.None)
{
requestedEffects1 |= TimelineDropEffects.Copy;
}
if ((e.AllowedEffects & DragDropEffects.Move) != DragDropEffects.None)
{
requestedEffects1 |= TimelineDropEffects.Move;
}
if (this.ShouldTryDropInsideFirst && this.TryDrop(e, requestedEffects1))
{
return(this.DragDropContext.Descriptor.ResultEffects);
}
TimelineDropEffects requestedEffects2 = requestedEffects1 | (this.StructureView.TimelineItemManager.SortByZOrder ? TimelineDropEffects.After : TimelineDropEffects.Before);
if (this.TryDrop(e, requestedEffects2))
{
return(this.DragDropContext.Descriptor.ResultEffects);
}
}
if (this.DragDropContext == null)
{
return(DragDropEffects.None);
}
this.DragDropContext.Descriptor.DisableDrop();
return(this.DragDropContext.Descriptor.ResultEffects);
}
public DragDropContext(IDataObject data, TimelineItem target, TimelineDropEffects allowedEffects)
{
this.Data = data;
this.Target = target;
this.AllowedEffects = allowedEffects;
this.Descriptor = new TimelineDragDescriptor(this);
}
private void SetFlag(TimelineDropEffects effects, bool value)
{
if (value)
{
this.ResultDropEffects |= effects;
}
else
{
this.ResultDropEffects &= ~effects;
}
}
private bool TryDrop(DragEventArgs e, TimelineDropEffects requestedEffects)
{
this.DragDropContext = new DragDropContext(e.Data, this.TargetItem, requestedEffects);
IDropAction instance = DropActionFactory.CreateInstance(this.DragDropContext);
if (instance != null)
{
return(instance.CanDrop(this.DragDropContext.Descriptor));
}
return(false);
}
public static TimelineDropEffects FromDragDropEffects(DragDropEffects effects)
{
TimelineDropEffects timelineDropEffects = TimelineDropEffects.None;
if ((effects & DragDropEffects.Copy) != DragDropEffects.None)
{
timelineDropEffects |= TimelineDropEffects.Copy;
}
else if ((effects & DragDropEffects.Move) != DragDropEffects.None)
{
timelineDropEffects |= TimelineDropEffects.Move;
}
return(timelineDropEffects);
}
public static DragDropEffects DragDropEffect(TimelineDropEffects effects)
{
DragDropEffects dragDropEffects = DragDropEffects.None;
if ((TimelineDropEffects.Copy & effects) != TimelineDropEffects.None)
{
dragDropEffects |= DragDropEffects.Copy;
}
if ((TimelineDropEffects.Move & effects) != TimelineDropEffects.None)
{
dragDropEffects |= DragDropEffects.Move;
}
return(dragDropEffects);
}
protected SceneElement GetDropTargetInfo(TimelineDropEffects dropEffects, TimelineDragDescriptor descriptor)
{
SceneElement sceneElement1 = this.Element;
if (sceneElement1 == null)
{
return((SceneElement)null);
}
descriptor.DropIndex = -1;
int num = 0;
SceneElement sceneElement2 = (SceneElement)null;
bool flag = false;
if ((dropEffects & TimelineDropEffects.Before) != TimelineDropEffects.None)
{
sceneElement1 = this.Element.VisualElementAncestor;
sceneElement2 = this.Element.VisualElementAncestor;
if (this.Item.IsExpanded && this.Item.HasActiveChild)
{
sceneElement1 = this.Element;
sceneElement2 = this.Element;
descriptor.RelativeDepth = 1;
}
num = 1;
flag = true;
}
else if ((dropEffects & TimelineDropEffects.After) != TimelineDropEffects.None)
{
sceneElement1 = this.Element.VisualElementAncestor;
sceneElement2 = this.Element.VisualElementAncestor;
flag = true;
}
if (flag && sceneElement2 != null)
{
ISceneNodeCollection <SceneNode> collectionForProperty = sceneElement2.GetCollectionForProperty((IPropertyId)this.GetContentPropertyFromDragDescriptor(descriptor));
if (collectionForProperty != null)
{
descriptor.DropIndex = collectionForProperty.IndexOf((SceneNode)this.Element) + num;
}
}
if (!this.Element.ViewModel.ActiveEditingContainer.IsAncestorOf((SceneNode)sceneElement1))
{
sceneElement1 = (SceneElement)null;
}
return(sceneElement1);
}
private DragDropEffects ComputeDropEffects(DragEventArgs e)
{
TimelineDropEffects allowedEffects1 = TimelineDropEffects.None;
if ((this.HitTestResult & DropHitTestResults.UpperHalf) != DropHitTestResults.None)
{
allowedEffects1 = !this.TimelineItem.TimelineItemManager.SortByZOrder ? TimelineDropEffects.After : TimelineDropEffects.Before;
}
else if ((this.HitTestResult & DropHitTestResults.LowerHalf) != DropHitTestResults.None)
{
allowedEffects1 = !this.TimelineItem.TimelineItemManager.SortByZOrder ? TimelineDropEffects.Before : TimelineDropEffects.After;
}
if ((e.AllowedEffects & DragDropEffects.Copy) != DragDropEffects.None && this.IsCopyKeyState(e.KeyStates))
{
allowedEffects1 |= TimelineDropEffects.Copy;
}
if ((e.AllowedEffects & DragDropEffects.Move) != DragDropEffects.None)
{
allowedEffects1 |= TimelineDropEffects.Move;
}
if ((this.HitTestResult & DropHitTestResults.CenterHalf) != DropHitTestResults.None)
{
TimelineDropEffects allowedEffects2 = allowedEffects1 & ~(TimelineDropEffects.Before | TimelineDropEffects.After);
this.DragDropContext = new DragDropContext(e.Data, this.TimelineItem, allowedEffects2);
IDropAction instance = DropActionFactory.CreateInstance(this.DragDropContext);
if (instance != null && instance.CanDrop(this.DragDropContext.Descriptor))
{
return(this.DragDropContext.Descriptor.ResultEffects);
}
}
this.DragDropContext = new DragDropContext(e.Data, this.TimelineItem, allowedEffects1);
IDropAction instance1 = DropActionFactory.CreateInstance(this.DragDropContext);
if (instance1 != null && instance1.CanDrop(this.DragDropContext.Descriptor))
{
return(this.DragDropContext.Descriptor.ResultEffects);
}
this.DragDropContext.Descriptor.DisableDrop();
return(this.DragDropContext.Descriptor.ResultEffects);
}
private bool IsAnyFlagSet(TimelineDropEffects effects)
{
return((this.ResultDropEffects & effects) != TimelineDropEffects.None);
}
