private object FindOrBindKeyValue(FrameworkElement element, DependencyProperty property)
{
foreach (FrameworkElement ancestor in VisualTree.EnumerateAncestors(element, true))
{
FieldDefinitionContainer container = UserFieldPresenter.GetContainer(ancestor);
if (container != null)
{
if (container.Definition != null && Key != null)
{
return(container.Definition.Metadata.Get(Key, default(object)));
}
container.Changed += () =>
{
if (Key != null)
{
object value = container.Definition.Metadata.Get(Key, default(object));
element.SetValue(property, value);
}
};
break;
}
}
return(null);
}
private void BindToFieldDefinitionContainer()
{
if (isAttached)
{
return;
}
foreach (FrameworkElement ancestor in VisualTree.EnumerateAncestors(this, true))
{
FieldDefinitionContainer container = GetContainer(ancestor);
if (container != null)
{
isAttached = true;
container.Changed += () =>
{
Console.WriteLine(ancestor.Name);
OnChanged(container.Definition);
};
if (container.Definition != null)
{
OnChanged(container.Definition);
}
}
}
}
private void TryRegisterSelf()
{
if (!isAdded)
{
FieldValueProviderCollection collection = VisualTree.FindFieldValueProviderCollection(this);
if (collection != null)
{
collection.Add(Definition.Identifier, this);
isAdded = true;
}
}
}
private static void BindModelContainerChanged(DependencyObject d)
{
foreach (FrameworkElement ancestor in VisualTree.EnumerateAncestors((FrameworkElement)d))
{
ModelDefinitionContainer container = UserModelPresenter.GetContainer(ancestor);
if (container != null)
{
SetContainerDefinition(d, container.Definition);
container.Changed += () => SetContainerDefinition(d, container.Definition);
break;
}
}
}
private void OnChanged(IFieldDefinition definition)
{
TryDisposeFieldView();
Definition = definition;
TryRegisterSelf();
if (VisualTree.TryGetFieldViewProvider(this, out IFieldViewProvider <IRenderContext> viewProvider) && VisualTree.TryGetModelDefinition(this, out IModelDefinition modelDefinition))
{
View = viewProvider.Get(modelDefinition, definition);
View.Render(new ContentControlRenderContext(this));
}
}
private void OnChanged()
{
TryDisposeModelView();
if (Definition == null)
{
return;
}
if (VisualTree.TryGetModelViewProvider(this, out IModelViewProvider <IRenderContext> viewProvider))
{
View = viewProvider.Get(Definition);
View.Render(new ContentControlRenderContext(this));
}
}
