// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.ComponentModel;
using System.Drawing.Design;
 
namespace System.Windows.Forms.Design;
 
/// <summary>
///  Implements the design time editor for specifying the <see cref="Control.Dock"/> property.
/// </summary>
[CLSCompliant(false)]
public sealed partial class DockEditor : UITypeEditor
{
    private DockUI? _dockUI;
 
    public override object? EditValue(ITypeDescriptorContext? context, IServiceProvider provider, object? value)
    {
        if (!provider.TryGetService(out IWindowsFormsEditorService? editorService))
        {
            return value;
        }
 
        _dockUI ??= new DockUI();
 
        _dockUI.Start(editorService, value);
        editorService.DropDownControl(_dockUI);
        value = _dockUI.Value;
        _dockUI.End();
 
        return value;
    }
 
    public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext? context) => UITypeEditorEditStyle.DropDown;
}