protected override void CopyCore(Freezable sourceFreezable)
{
base.CopyCore(sourceFreezable);
sourceFreezable.SetValue(ByProperty, GetValue(ByProperty));
sourceFreezable.SetValue(FromProperty, GetValue(FromProperty));
sourceFreezable.SetValue(ToProperty, GetValue(ToProperty));
}
protected override void CopyCore(Freezable sourceFreezable)
{
base.CopyCore(sourceFreezable);
sourceFreezable.SetValue(ByProperty, GetValue(ByProperty));
sourceFreezable.SetValue(FromProperty, GetValue(FromProperty));
sourceFreezable.SetValue(ToProperty, GetValue(ToProperty));
}
public void ContainingNameScopeTest()
{
FrameworkElement logicalParent = new FrameworkElement();
FrameworkElement visualParent = new FrameworkElement();
FrameworkElement child = new FrameworkElement();
NameScope logicalNameScope = new NameScope();
NameScope.SetNameScope(logicalParent, logicalNameScope);
NameScope visualNameScope = new NameScope();
NameScope.SetNameScope(visualParent, visualNameScope);
Freezable value = new Freezable();
Freezable subValue = new Freezable();
// visual / context tree: logicalParent -> visualParent -> child -> value -> subValue
logicalParent.AddVisualChild(visualParent);
visualParent.AddVisualChild(child);
child.SetValue(ValueProperty, value);
value.SetValue(ValueProperty, subValue);
// logical tree: logicalParent -> child
logicalParent.AddLogicalChild(child);
Assert.AreEqual(logicalNameScope, NameScope.GetContainingNameScope(subValue));
}
public void ContextElementParentTest()
{
FrameworkElement root = new FrameworkElement();
FrameworkElement child = new FrameworkElement();
Freezable value = new Freezable();
Freezable subValue = new Freezable();
value.SetValue(ValueProperty, subValue);
child.SetValue(ValueProperty, value);
root.AddVisualChild(child);
Assert.AreEqual(value, ((IContextElement)subValue).ContextParent);
Assert.AreEqual(child, ((IContextElement)value).ContextParent);
Assert.AreEqual(root, ((IContextElement)child).ContextParent);
}
private static void TryFreeze(Freezable freezable)
{
var bindingProperty = GetBindingProperty(freezable);
if (bindingProperty != null)
{
var bindingExpression = BindingOperations.GetBindingExpression(freezable, bindingProperty);
if (bindingExpression == null)
{
freezable.Changed += OnFreezableChanged;
return;
}
bindingExpression.UpdateTarget();
freezable.SetValue(bindingProperty, freezable.GetValue(bindingProperty));
BindingOperations.ClearAllBindings(freezable);
freezable.Freeze();
}
}