using System;
using System.Collections.Generic;
namespace Xamarin.Forms
{
///
/// Helper that handles storing and lookup of platform specifics implementations
///
/// The Element type
internal class PlatformConfigurationRegistry : IElementConfiguration
where TElement : Element
{
readonly TElement _element;
readonly Dictionary _platformSpecifics = new Dictionary();
internal PlatformConfigurationRegistry(TElement element)
{
_element = element;
}
public IPlatformElementConfiguration On() where T : IConfigPlatform
{
if (_platformSpecifics.ContainsKey(typeof(T)))
{
return (IPlatformElementConfiguration)_platformSpecifics[typeof(T)];
}
var emptyConfig = Configuration.Create(_element);
_platformSpecifics.Add(typeof(T), emptyConfig);
return emptyConfig;
}
}
}