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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;
namespace MaterialDesignThemes.Wpf
{
public static partial class HintProxyFabric
{
private sealed class HintProxyBuilder
{
private readonly Func<Control, bool> _canBuild;
private readonly Func<Control, IHintProxy> _build;
public HintProxyBuilder(Func<Control, bool> canBuild, Func<Control, IHintProxy> build)
{
if (canBuild == null) throw new ArgumentNullException(nameof(canBuild));
if (build == null) throw new ArgumentNullException(nameof(build));
_canBuild = canBuild;
_build = build;
}
public bool CanBuild(Control control) => _canBuild(control);
public IHintProxy Build(Control control) => _build(control);
}
private static readonly List<HintProxyBuilder> Builders = new List<HintProxyBuilder>();
static HintProxyFabric()
{
Builders.Add(new HintProxyBuilder(c => c is ComboBox, c => new ComboBoxHintProxy((ComboBox) c)));
Builders.Add(new HintProxyBuilder(c => c is TextBox, c => new TextBoxHintProxy((TextBox)c)));
Builders.Add(new HintProxyBuilder(c => c is PasswordBox, c => new PasswordBoxHintProxy((PasswordBox)c)));
}
public static void RegisterBuilder(Func<Control, bool> canBuild, Func<Control, IHintProxy> build)
{
Builders.Add(new HintProxyBuilder(canBuild, build));
}
public static IHintProxy Get(Control control)
{
var builder = Builders.FirstOrDefault(v => v.CanBuild(control));
if (builder == null) throw new NotImplementedException();
return builder.Build(control);
}
}
}
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