public override object ProvideValue(IServiceProvider serviceProvider)
{
IProvideValueTarget provideValue = serviceProvider.GetService(typeof(IProvideValueTarget)) as IProvideValueTarget;
if (provideValue == null)
{
return(this);
}
DependencyObject target = provideValue.TargetObject as DependencyObject;
DependencyProperty property = provideValue.TargetProperty as DependencyProperty;
// If not dependency object or dependency property, return this instance
if (target == null || property == null)
{
return(this);
}
if (!ElementStateOperations.HasPropertyValue(target, property))
{
object defaultValue = PropertyValueConverter.ConvertFromString(target.GetType(), property, Default);
ElementStateOperations.AddPropertyValue(target, property, defaultValue);
}
BindingBase binding = ElementStateOperations.CreateBinding(target, property);
object startValue = binding.ProvideValue(serviceProvider);
return(startValue);
}
public override object ProvideValue(IServiceProvider serviceProvider)
{
IProvideValueTarget service = serviceProvider.GetService(typeof(IProvideValueTarget)) as IProvideValueTarget;
if (service == null)
{
return(null);
}
FrameworkElement mTarget = service.TargetObject as FrameworkElement;
DependencyProperty mProperty = service.TargetProperty as DependencyProperty;
if (mTarget != null && mProperty != null)
{
var mDescriptor = DependencyPropertyDescriptor.FromProperty(mProperty, typeof(UIElement));
mDescriptor.AddValueChanged(mTarget, VisibilityChanged);
RoutedEventHandler handler = null;
handler = (s, e) => { mDescriptor.RemoveValueChanged(mTarget, VisibilityChanged); mTarget.Unloaded -= handler; };
mTarget.Unloaded += handler;
if (_binding != null)
{
return(_binding.ProvideValue(serviceProvider));// BindingOperations.SetBinding(mTarget, mProperty, _Binding);
}
}
return(Visibility.Visible);
}
