protected override bool OnDragOver(DragEventArgs args)
{
if (this.dragSource == null)
{
this.dragSource = Enumerable.First <IDragSource>(DragSourceHelper.DataOfType <IDragSource>(args.Data));
this.dragSource.GiveFeedback += new GiveFeedbackEventHandler(this.DragSourceGiveFeedback);
}
this.dragCursor = (Cursor)null;
args.Effects = DragDropEffects.None;
DataBindingDragDropModel dragFeedback = this.GetDragFeedback(args);
if (dragFeedback == null || !dragFeedback.CheckDropFlags(DataBindingDragDropFlags.SetBinding | DataBindingDragDropFlags.CreateElement, false))
{
this.previewHighlighter.Option = HighlightOption.Default;
this.previewHighlighter.InsertionPointPreview = (ISceneInsertionPoint)null;
this.FeedbackAdorner.Text = string.Empty;
this.FeedbackAdorner.CloseAdorner();
base.OnDragOver(args);
return(true);
}
if (dragFeedback.CheckDropFlags(DataBindingDragDropFlags.CreateElement))
{
if (!((SceneElement)dragFeedback.TargetNode).IsEffectiveRoot)
{
this.previewHighlighter.Option = HighlightOption.Insert;
this.previewHighlighter.InsertionPointPreview = (ISceneInsertionPoint)dragFeedback.InsertionPoint;
}
else
{
this.previewHighlighter.Option = HighlightOption.Default;
this.previewHighlighter.InsertionPointPreview = (ISceneInsertionPoint)null;
}
args.Effects = DragDropEffects.Copy;
this.dragCursor = DataBindingModeModel.Instance.NormalizedMode != DataBindingMode.Details ? ToolCursors.DataBindingMasterAddCursor : ToolCursors.DataBindingDetailsAddCursor;
}
else
{
this.previewHighlighter.Option = HighlightOption.Preview;
this.previewHighlighter.InsertionPointPreview = (ISceneInsertionPoint)dragFeedback.InsertionPoint;
args.Effects = DragDropEffects.Move;
this.dragCursor = DataBindingModeModel.Instance.NormalizedMode != DataBindingMode.Details ? ToolCursors.DataBindingMasterCursor : ToolCursors.DataBindingDetailsCursor;
}
if (DataBindingModeModel.Instance.NormalizedMode == DataBindingMode.Details)
{
this.FeedbackAdorner.Background = this.detailsBackground;
}
else
{
this.FeedbackAdorner.Background = this.masterBackground;
}
this.FeedbackAdorner.Text = dragFeedback.Tooltip;
this.SetTextCuePosition(args.GetPosition((IInputElement)this.ActiveView.Artboard.ContentArea));
this.FeedbackAdorner.DrawAdorner(this.OpenFeedback());
this.CloseFeedback();
DataBindingToolBehavior.PokeWpfToRefresh();
base.OnDragOver(args);
return(true);
}
private void ApplyRules(DataBindingDragDropFlags filteredDragFlags)
{
this.ApplyRulesInternal(this.DragModel, filteredDragFlags);
if (!this.ShouldTryDropOnAncestorPanel(filteredDragFlags))
{
return;
}
DataBindingDragDropModel ancestorPanelModel = this.DragModel.AncestorPanelModel;
if (ancestorPanelModel == null || ancestorPanelModel == this.DragModel)
{
return;
}
DataBindingDragDropFlags filteredDragFlags1 = filteredDragFlags & ~DataBindingDragDropFlags.SetBinding;
this.ApplyRulesInternal(ancestorPanelModel, filteredDragFlags1);
if (!ancestorPanelModel.CheckDropFlags(DataBindingDragDropFlags.CreateElement))
{
return;
}
this.DragModel = ancestorPanelModel;
}
protected override bool OnDrop(DragEventArgs args)
{
this.previewHighlighter.Option = HighlightOption.Default;
this.previewHighlighter.InsertionPointPreview = (ISceneInsertionPoint)null;
this.FeedbackAdorner.CloseAdorner();
DataBindingDragDropModel dragFeedback = this.GetDragFeedback(args);
bool flag = false;
if (dragFeedback != null && dragFeedback.CheckDropFlags(DataBindingDragDropFlags.SetBinding | DataBindingDragDropFlags.CreateElement, false))
{
Point position = args.GetPosition((IInputElement)this.ActiveView.ViewRootContainer);
this.ToolBehaviorContext.SnappingEngine.Start(this.ToolBehaviorContext, (BaseFrameworkElement)null, (IList <BaseFrameworkElement>)null);
Point artboardSnappedDropPoint = this.ToolBehaviorContext.SnappingEngine.SnapPoint(position, EdgeFlags.TopLeft) * this.ActiveView.GetComputedTransformFromRoot((SceneElement)dragFeedback.TargetNode);
this.ToolBehaviorContext.SnappingEngine.Stop();
flag = DataBindingDragDropManager.Drop(dragFeedback, artboardSnappedDropPoint);
}
if (!this.IsSuspended)
{
this.PopSelf();
}
return(flag);
}