// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.

namespace System.Web.Mvc
{
    public class ViewMasterPage<TModel> : ViewMasterPage
    {
        private AjaxHelper<TModel> _ajaxHelper;
        private HtmlHelper<TModel> _htmlHelper;
        private ViewDataDictionary<TModel> _viewData;

        public new AjaxHelper<TModel> Ajax
        {
            get
            {
                if (_ajaxHelper == null)
                {
                    _ajaxHelper = new AjaxHelper<TModel>(ViewContext, ViewPage);
                }
                return _ajaxHelper;
            }
        }

        public new HtmlHelper<TModel> Html
        {
            get
            {
                if (_htmlHelper == null)
                {
                    _htmlHelper = new HtmlHelper<TModel>(ViewContext, ViewPage);
                }
                return _htmlHelper;
            }
        }

        public new TModel Model
        {
            get { return ViewData.Model; }
        }

        public new ViewDataDictionary<TModel> ViewData
        {
            get
            {
                if (_viewData == null)
                {
                    _viewData = new ViewDataDictionary<TModel>(ViewPage.ViewData);
                }
                return _viewData;
            }
        }
    }
}
