//------------------------------------------------------------------------------
// <copyright file="HTMLTagNameToTypeMapper.cs" company="Microsoft">
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// </copyright>
//------------------------------------------------------------------------------

/*
 * Mapper of html tags to control types.
 *
 * Copyright (c) 1998 Microsoft Corporation
 */

namespace System.Web.UI {
    using System;
    using System.Collections;
    using System.Web.Compilation;
    using System.Web.Configuration;
    using System.Web.UI.HtmlControls;
    using System.Web.Util;

    internal class HtmlTagNameToTypeMapper : ITagNameToTypeMapper {
        static Hashtable _tagMap;
        static Hashtable _inputTypes;

        internal HtmlTagNameToTypeMapper() {
        }

        /*public*/ Type ITagNameToTypeMapper.GetControlType(string tagName, IDictionary attributeBag) {
            Type controlType;

            if (_tagMap == null) {
                Hashtable t = new Hashtable(10, StringComparer.OrdinalIgnoreCase);
                t.Add("a", typeof(HtmlAnchor));
                t.Add("button", typeof(HtmlButton));
                t.Add("form", typeof(HtmlForm));
                t.Add("head", typeof(HtmlHead));
                t.Add("img", typeof(HtmlImage));
                t.Add("textarea", typeof(HtmlTextArea));
                t.Add("select", typeof(HtmlSelect));
                t.Add("table", typeof(HtmlTable));
                t.Add("tr", typeof(HtmlTableRow));
                t.Add("td", typeof(HtmlTableCell));
                t.Add("th", typeof(HtmlTableCell));

                // Add new html 5 audio/video tags which resolve the src tag
                if (MultiTargetingUtil.IsTargetFramework45OrAbove) {
                    t.Add("audio", typeof(HtmlAudio));
                    t.Add("video", typeof(HtmlVideo));
                    t.Add("track", typeof(HtmlTrack));
                    t.Add("source", typeof(HtmlSource));
                    t.Add("iframe", typeof(HtmlIframe));
                    t.Add("embed", typeof(HtmlEmbed));
                    t.Add("area", typeof(HtmlArea));
                    t.Add("html", typeof(HtmlElement));
                }
                _tagMap = t;
            }

            if (_inputTypes == null) {
                Hashtable t = new Hashtable(10, StringComparer.OrdinalIgnoreCase);
                t.Add("text", typeof(HtmlInputText));
                t.Add("password", typeof(HtmlInputPassword));
                t.Add("button", typeof(HtmlInputButton));
                t.Add("submit", typeof(HtmlInputSubmit));
                t.Add("reset", typeof(HtmlInputReset));
                t.Add("image", typeof(HtmlInputImage));
                t.Add("checkbox", typeof(HtmlInputCheckBox));
                t.Add("radio", typeof(HtmlInputRadioButton));
                t.Add("hidden", typeof(HtmlInputHidden));
                t.Add("file", typeof(HtmlInputFile));
                _inputTypes = t;
            }

            if (StringUtil.EqualsIgnoreCase("input", tagName)) {
                string type = "text";
                if (attributeBag != null) {
                    type = (string)attributeBag["type"] ?? type;
                }

                controlType = (Type)_inputTypes[type];
                if (controlType == null) {
                    // HtmlInputGenericControl was introduced in 4.5, so we do explicit version checking to preserve the old throwing behavior
                    if (MultiTargetingUtil.IsTargetFramework45OrAbove) {
                        controlType = typeof(HtmlInputGenericControl);
                    }
                    else {
                        throw new HttpException(SR.GetString(SR.Invalid_type_for_input_tag, type));
                    }
                }
            }
            else {
                controlType = (Type)_tagMap[tagName];
                if (controlType == null) {
                    controlType = typeof(HtmlGenericControl);
                }
            }

            return controlType;
        }
    }
}