/// <summary>
/// Tries to get the <see cref="ShadowObject"/> instance associated.
/// </summary>
/// <param name="instance">The live instance</param>
/// <param name="shadow">The shadow object</param>
/// <returns><c>true</c> if the shadow object was found, <c>false</c> otherwise</returns>
public static bool TryGet(object instance, out ShadowObject shadow)
{
shadow = null;
if (!Enable || instance == null)
{
return(false);
}
return(Shadows.TryGetValue(instance, out shadow));
}
public static bool TryGetCollectionItemIds(object instance, out CollectionItemIdentifiers itemIds)
{
var shadow = ShadowObject.Get(instance);
if (shadow == null)
{
itemIds = null;
return(false);
}
object result;
itemIds = shadow.TryGetValue(CollectionItemIdKey, out result) ? (CollectionItemIdentifiers)result : null;
return(result != null);
}
public static CollectionItemIdentifiers GetCollectionItemIds(object instance)
{
if (instance.GetType().IsValueType)
{
throw new ArgumentException(@"The given instance is a value type and cannot have a item ids attached to it.", nameof(instance));
}
var shadow = ShadowObject.GetOrCreate(instance);
object result;
if (shadow.TryGetValue(CollectionItemIdKey, out result))
{
return((CollectionItemIdentifiers)result);
}
var itemIds = new CollectionItemIdentifiers();
shadow.Add(CollectionItemIdKey, itemIds);
return(itemIds);
}
public static bool HasCollectionItemIds(object instance)
{
return(ShadowObject.Get(instance)?.ContainsKey(CollectionItemIdKey) ?? false);
}
