//------------------------------------------------------------------------------
// <copyright file="HttpHandlersSection.cs" company="Microsoft">
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
 
namespace System.Web.Configuration {
    using System;
    using System.Xml;
    using System.Configuration;
    using System.Collections.Specialized;
    using System.Collections;
    using System.IO;
    using System.Text;
    using System.Web.Util;
    using System.Web.Compilation;
    using System.Globalization;
    using System.Security.Permissions;
 
    public sealed class HttpHandlersSection : ConfigurationSection {
        private static ConfigurationPropertyCollection _properties;
        private static readonly ConfigurationProperty _propHandlers =
            new ConfigurationProperty(null, typeof(HttpHandlerActionCollection), null, ConfigurationPropertyOptions.IsDefaultCollection);
 
        private bool _validated;
 
        static HttpHandlersSection() {
            // Property initialization
            _properties = new ConfigurationPropertyCollection();
            _properties.Add(_propHandlers);
        }
 
        public HttpHandlersSection() {
        }
 
        protected override ConfigurationPropertyCollection Properties {
            get {
                return _properties;
            }
        }
 
        [ConfigurationProperty("", IsDefaultCollection = true)]
        public HttpHandlerActionCollection Handlers {
            get {
                return (HttpHandlerActionCollection)base[_propHandlers];
            }
        }
 
        internal bool ValidateHandlers() {
            if (!_validated) {
                lock (this) {
                    if (!_validated) {
                        foreach (HttpHandlerAction ha in Handlers) {
                            ha.InitValidateInternal();
                        }
 
                        _validated = true;
                    }
                }
            }
 
            return _validated;
        }
 
        internal HttpHandlerAction FindMapping(String verb, VirtualPath path) {
            ValidateHandlers();
 
            for (int i = 0; i < Handlers.Count; i++) {
                HttpHandlerAction m = (HttpHandlerAction)Handlers[i];
 
                if (m.IsMatch(verb, path)) {
                    return m;
                }
            }
 
            return null;
        }
    }
}