internal static void MapModelNode(
IModelNode genericModelNode,
LayoutItemNode genericLayoutItemNode
)
{
if (genericLayoutItemNode.Index is not null)
{
genericModelNode.Index =
genericLayoutItemNode.Index ?? genericModelNode.Index;
}
}
internal static void MapModelViewLayoutElement(
IModelViewLayoutElement modelModelViewLayoutElement,
LayoutItemNode layoutViewItemNode
)
{
if (layoutViewItemNode.Id is not null)
{
modelModelViewLayoutElement.Id =
layoutViewItemNode.Id ?? modelModelViewLayoutElement.Id;
}
if (layoutViewItemNode.RelativeSize is not null)
{
modelModelViewLayoutElement.RelativeSize =
layoutViewItemNode.RelativeSize ?? modelModelViewLayoutElement.RelativeSize;
}
}
static IEnumerable <TItem> VisitNodes <TItem>(LayoutItemNode node)
where TItem : LayoutItemNode
{
if (node is TItem targetNode)
{
yield return(targetNode);
}
if (node is IEnumerable <LayoutItemNode> items)
{
foreach (var item in items)
{
foreach (var nestedItem in VisitNodes <TItem>(item))
{
yield return(nestedItem);
}
}
}
}
IModelViewLayoutElement?IModelViewLayoutElementFactory.CreateViewLayoutElement(IModelNode parentNode, LayoutItemNode layoutItemNode)
{
if (layoutItemNode is TLayoutItemNode tLayoutItemNode)
{
return(CreateViewLayoutElement(parentNode, tLayoutItemNode));
}
return(null);
}
bool IModelViewLayoutElementFactory.Handles(LayoutItemNode layoutItemNode) => layoutItemNode is TLayoutItemNode;
public IModelViewLayoutElement?CreateViewLayoutElement(IModelNode parentNode, LayoutItemNode layoutItemNode)
{
IModelViewLayoutElementFactory?FindFactory(Type?type)
{
if (type is null)
{
return(null);
}
if (modelViewLayoutElementFactories.ContainsKey(type))
{
return(modelViewLayoutElementFactories[type].Value);
}
return(FindFactory(type.GetBaseType()));
}
var builder = FindFactory(layoutItemNode.GetType());
if (builder is not null)
{
if (builder.Handles(layoutItemNode))
{
return(builder.CreateViewLayoutElement(parentNode, layoutItemNode));
}
}
return(null);
}