static void VisualLoaded(object sender, RoutedEventArgs e)
{
var fe = sender as FrameworkElement;
if (fe != null)
{
var v = ExtensionServices.GetVisualChild <ScrollViewer>(fe);
if (v != null)
{
AttachScrollViewer(v, true);
fe.Loaded -= VisualLoaded;
}
}
}
private static void AttachScrollViewer(DependencyObject d, bool newValue)
{
var scoller = d as ScrollViewer;
if (scoller != null)
{
if (newValue)
{
scoller.PreviewMouseLeftButtonDown += ScollerPreviewMouseLeftButtonDown;
scoller.PreviewMouseLeftButtonUp += ScollerPreviewMouseLeftButtonUp;
scoller.PreviewMouseMove += ScollerPreviewMouseMove;
SetInertiaProcessor(scoller, new InertiaHandler(scoller));
}
else
{
scoller.PreviewMouseLeftButtonDown -= ScollerPreviewMouseLeftButtonDown;
scoller.PreviewMouseLeftButtonUp -= ScollerPreviewMouseLeftButtonUp;
scoller.PreviewMouseMove -= ScollerPreviewMouseMove;
var inertia = GetInertiaProcessor(scoller);
if (inertia != null)
{
inertia.Dispose();
}
}
}
else
{
var sbar = ExtensionServices.GetVisualChild <ScrollViewer>(d);
if (sbar != null)
{
AttachScrollViewer(sbar, newValue);
}
else
{
var visual = d as FrameworkElement;
if (visual != null)
{
visual.Loaded += VisualLoaded;
}
}
}
}
