/// <summary>
/// Determine if the locator contains an object for the given key.
/// </summary>
/// <param name="key">The key to check.</param>
/// <returns>
/// true if the locator contains an object for the key; returns
/// false otherwise.
/// </returns>
public override bool Contains(object key)
{
Guard.ArgumentNotNull(key, "key");
if (references.ContainsKey(key))
{
return(true);
}
if (ParentLocator != null)
{
return(ParentLocator.Contains(key));
}
return(false);
}
/// <summary>
/// See <see cref="IReadableLocator.Contains(object, SearchMode)"/> for more information.
/// </summary>
public override bool Contains(object key, SearchMode options)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
if (!Enum.IsDefined(typeof(SearchMode), options))
{
throw new ArgumentException(Properties.Resources.InvalidEnumerationValue, "options");
}
if (references.ContainsKey(key))
{
return(true);
}
if (options == SearchMode.Up && ParentLocator != null)
{
return(ParentLocator.Contains(key, options));
}
return(false);
}
