private static void PropertyEditor_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
FrameworkElement frameworkElement = (FrameworkElement)sender;
SceneNodeCategory sceneNodeCategory1 = e.NewValue as SceneNodeCategory;
if (sceneNodeCategory1 != null)
{
PropertyEntry property = frameworkElement.GetValue(SceneNodeCategory.AttachedPropertyEntryProperty) as PropertyEntry;
if (property == null)
{
return;
}
sceneNodeCategory1.AddAttachedProperty(property);
frameworkElement.DataContextChanged -= new DependencyPropertyChangedEventHandler(SceneNodeCategory.PropertyEditor_DataContextChanged);
}
else
{
SceneNodeCategory sceneNodeCategory2 = e.OldValue as SceneNodeCategory;
if (sceneNodeCategory2 == null)
{
return;
}
PropertyEntry property = frameworkElement.GetValue(SceneNodeCategory.AttachedPropertyEntryProperty) as PropertyEntry;
if (property == null)
{
return;
}
sceneNodeCategory2.RemoveAttachedProperty(property);
}
}
private static void AttachedPropertyEntryChanged(DependencyObject source, DependencyPropertyChangedEventArgs args)
{
SceneNodeCategory sceneNodeCategory = source.GetValue(FrameworkElement.DataContextProperty) as SceneNodeCategory;
if (sceneNodeCategory != null)
{
if (args.OldValue != null)
{
sceneNodeCategory.RemoveAttachedProperty((PropertyEntry)args.OldValue);
}
if (args.NewValue == null)
{
return;
}
sceneNodeCategory.AddAttachedProperty((PropertyEntry)args.NewValue);
}
else
{
((FrameworkElement)source).DataContextChanged += new DependencyPropertyChangedEventHandler(SceneNodeCategory.PropertyEditor_DataContextChanged);
}
}