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//------------------------------------------------------------------------------
// <copyright file="PageHandlerFactory.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
/*
* Handler Factory implementation for Page files
*
* Copyright (c) 1999 Microsoft Corporation
*/
namespace System.Web.UI {
using System.Runtime.Serialization.Formatters;
using System.IO;
using System.Security.Permissions;
using System.Web.Compilation;
using System.Web.Util;
using Debug=System.Web.Util.Debug;
/*
* Handler Factory implementation for ASP.NET files
*/
[PermissionSet(SecurityAction.LinkDemand, Unrestricted = true)]
[PermissionSet(SecurityAction.InheritanceDemand, Unrestricted=true)]
public class PageHandlerFactory : IHttpHandlerFactory2 {
private bool _isInheritedInstance;
protected internal PageHandlerFactory() {
// Check whether this is the exact PageHandlerFactory, or a derived class
_isInheritedInstance = (GetType() != typeof(PageHandlerFactory));
}
public virtual IHttpHandler GetHandler(HttpContext context, string requestType, string virtualPath, string path) {
Debug.Trace("PageHandlerFactory", "PageHandlerFactory: " + virtualPath);
// This should never get called in ISAPI mode but currently is in integrated mode
// Debug.Assert(false);
return GetHandlerHelper(context, requestType, VirtualPath.CreateNonRelative(virtualPath), path);
}
IHttpHandler IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType,
VirtualPath virtualPath, String physicalPath) {
// If it's a derived class, we must call the old (less efficient) GetHandler, in
// case it was overriden
if (_isInheritedInstance) {
return GetHandler(context, requestType, virtualPath.VirtualPathString, physicalPath);
}
return GetHandlerHelper(context, requestType, virtualPath, physicalPath);
}
public virtual void ReleaseHandler(IHttpHandler handler) { }
private IHttpHandler GetHandlerHelper(HttpContext context, string requestType,
VirtualPath virtualPath, string physicalPath) {
Page page = BuildManager.CreateInstanceFromVirtualPath(
virtualPath, typeof(Page), context, true /*allowCrossApp*/) as Page;
if (page == null)
return null;
page.TemplateControlVirtualPath = virtualPath;
return page;
}
}
}
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