private void OnGraphSourceChanged()
{
if (myGraphVisual.Presentation != null)
{
var adornerLayer = AdornerLayer.GetAdornerLayer(myGraphVisual);
var adorners = adornerLayer.GetAdorners(myGraphVisual);
if (adorners != null)
{
var toolTipAdorner = adorners.OfType <ToolTipAdorner>().SingleOrDefault();
if (toolTipAdorner != null)
{
adornerLayer.Remove(toolTipAdorner);
}
}
}
myGraphVisual.Presentation = GraphSource;
if (myGraphVisual.Presentation != null)
{
var toolTipModule = GraphSource.GetPropertySetFor <ToolTipContent>();
if (toolTipModule != null)
{
var adornerLayer = AdornerLayer.GetAdornerLayer(myGraphVisual);
var adorner = new ToolTipAdorner(myGraphVisual, myGraphVisual, toolTipModule);
adornerLayer.Add(adorner);
}
}
myZoomSlider.IsEnabled = myGraphVisual.Presentation != null;
}
private static void OnGraphSourceChanged( DependencyObject d, DependencyPropertyChangedEventArgs e )
{
var graphView = ( GraphView )d;
if( graphView.myGraphVisual.Presentation != null )
{
var adornerLayer = AdornerLayer.GetAdornerLayer( graphView.myGraphVisual );
var adorners = adornerLayer.GetAdorners( graphView.myGraphVisual );
if( adorners != null )
{
var toolTipAdorner = adorners.OfType<ToolTipAdorner>().SingleOrDefault();
if( toolTipAdorner != null )
{
adornerLayer.Remove( toolTipAdorner );
}
}
}
var presentation = ( IGraphPresentation )e.NewValue;
graphView.myGraphVisual.Presentation = presentation;
if( graphView.myGraphVisual.Presentation != null )
{
var toolTipModule = presentation.GetPropertySetFor<ToolTipContent>();
if( toolTipModule != null )
{
var adornerLayer = AdornerLayer.GetAdornerLayer( graphView.myGraphVisual );
var adorner = new ToolTipAdorner( graphView.myGraphVisual, graphView.myGraphVisual, toolTipModule );
adornerLayer.Add( adorner );
}
}
}