511 lines
24 KiB
C#
511 lines
24 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="BrowserCapabilitiesCompiler.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.Compilation {
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using System;
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using System.CodeDom;
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using System.Collections;
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using System.Collections.Specialized;
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using System.Configuration;
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using System.CodeDom.Compiler;
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using System.Diagnostics.CodeAnalysis;
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using System.Globalization;
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using System.IO;
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using System.Reflection;
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using System.Security;
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using System.Security.Permissions;
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using System.Web.Configuration;
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using System.Web.Hosting;
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using System.Web.Util;
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using System.Web.UI;
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using System.Xml;
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static class BrowserCapabilitiesCompiler {
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internal static readonly VirtualPath AppBrowsersVirtualDir =
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HttpRuntime.AppDomainAppVirtualPathObject.SimpleCombineWithDir(HttpRuntime.BrowsersDirectoryName);
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private const string browerCapabilitiesTypeName = "BrowserCapabilities";
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private const string browerCapabilitiesCacheKey = "__browserCapabilitiesCompiler";
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private static Type _browserCapabilitiesFactoryBaseType;
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private static BrowserCapabilitiesFactoryBase _browserCapabilitiesFactoryBaseInstance;
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private static object _lockObject = new object();
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internal static Assembly AspBrowserCapsFactoryAssembly { get; set; }
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static BrowserCapabilitiesCompiler() {
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Assembly assembly = null;
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String publicKeyToken = BrowserCapabilitiesCodeGenerator.BrowserCapAssemblyPublicKeyToken;
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// If the token file cannot be found, do not load the assembly.
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if (publicKeyToken != null) {
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try {
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string version;
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// If we are targeting previous versions, try loading the 2.0 version of ASP.BrowserCapsFactory
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// (Dev10 bug 795509)
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if (MultiTargetingUtil.IsTargetFramework40OrAbove) {
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version = ThisAssembly.Version;
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} else {
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version = "2.0.0.0";
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}
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assembly = Assembly.Load("ASP.BrowserCapsFactory, Version=" + version + ", Culture=neutral, PublicKeyToken=" + publicKeyToken);
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AspBrowserCapsFactoryAssembly = assembly;
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}
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catch (FileNotFoundException) {
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}
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}
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// fallback when assembly cannot be found.
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if((assembly == null) || (!(assembly.GlobalAssemblyCache))) {
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_browserCapabilitiesFactoryBaseType = typeof(System.Web.Configuration.BrowserCapabilitiesFactory);
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}
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else {
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_browserCapabilitiesFactoryBaseType = assembly.GetType("ASP.BrowserCapabilitiesFactory", true);
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}
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}
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internal static BrowserCapabilitiesFactoryBase BrowserCapabilitiesFactory {
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get {
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if(_browserCapabilitiesFactoryBaseInstance != null) {
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return _browserCapabilitiesFactoryBaseInstance;
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}
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Type t = GetBrowserCapabilitiesType();
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lock(_lockObject) {
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if(_browserCapabilitiesFactoryBaseInstance == null) {
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if (t != null) {
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_browserCapabilitiesFactoryBaseInstance =
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(BrowserCapabilitiesFactoryBase)Activator.CreateInstance(t);
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}
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}
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}
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return _browserCapabilitiesFactoryBaseInstance;
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}
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}
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internal static Type GetBrowserCapabilitiesFactoryBaseType() {
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return _browserCapabilitiesFactoryBaseType;
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}
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internal static Type GetBrowserCapabilitiesType() {
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//Need to assert here to check directories and files
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InternalSecurityPermissions.Unrestricted.Assert();
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BuildResult result = null;
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try {
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// Try the cache first, and if it's not there, compile it
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result = BuildManager.GetBuildResultFromCache(browerCapabilitiesCacheKey);
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if (result == null) {
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DateTime utcStart = DateTime.UtcNow;
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VirtualDirectory directory = AppBrowsersVirtualDir.GetDirectory();
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// first try if app browser dir exists
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string physicalDir = HostingEnvironment.MapPathInternal(AppBrowsersVirtualDir);
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/* DevDivBugs 173531
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* For the App_Browsers scenario, we need to cache the generated browser caps processing
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* code. We need to add path dependency on all files so that changes to them will
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* invalidate the cache entry and cause recompilation. */
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if (directory != null && Directory.Exists(physicalDir)) {
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ArrayList browserFileList = new ArrayList();
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ArrayList browserFileDependenciesList = new ArrayList();
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bool hasCustomCaps = AddBrowserFilesToList(directory, browserFileList, false);
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if (hasCustomCaps) {
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AddBrowserFilesToList(directory, browserFileDependenciesList, true);
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}
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else {
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browserFileDependenciesList = browserFileList;
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}
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if (browserFileDependenciesList.Count > 0) {
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ApplicationBrowserCapabilitiesBuildProvider buildProvider = new ApplicationBrowserCapabilitiesBuildProvider();
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foreach (string virtualPath in browserFileList) {
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buildProvider.AddFile(virtualPath);
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}
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BuildProvidersCompiler bpc = new BuildProvidersCompiler(null /*configPath*/,
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BuildManager.GenerateRandomAssemblyName(BuildManager.AppBrowserCapAssemblyNamePrefix));
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bpc.SetBuildProviders(new SingleObjectCollection(buildProvider));
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CompilerResults results = bpc.PerformBuild();
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Assembly assembly = results.CompiledAssembly;
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// Get the type we want from the assembly
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Type t = assembly.GetType(
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BaseCodeDomTreeGenerator.defaultNamespace + "." + ApplicationBrowserCapabilitiesCodeGenerator.FactoryTypeName);
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// Cache it for next time
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result = new BuildResultCompiledType(t);
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result.VirtualPath = AppBrowsersVirtualDir;
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result.AddVirtualPathDependencies(browserFileDependenciesList);
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BuildManager.CacheBuildResult(browerCapabilitiesCacheKey, result, utcStart);
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}
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}
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}
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}
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finally {
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CodeAccessPermission.RevertAssert();
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}
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// Simply return the global factory type.
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if (result == null)
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return _browserCapabilitiesFactoryBaseType;
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// Return the compiled type
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return ((BuildResultCompiledType)result).ResultType;
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}
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[SuppressMessage("Microsoft.Security", "CA2122:DoNotIndirectlyExposeMethodsWithLinkDemands",
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Justification="Warning was suppressed for previous version of API (different overload) in FxCop project file.")]
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private static bool AddBrowserFilesToList(
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VirtualDirectory directory, IList list, bool doRecurse) {
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bool hasCustomCaps = false;
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foreach (VirtualFileBase fileBase in directory.Children) {
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// Recursive into subdirectories.
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if (fileBase.IsDirectory) {
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if (doRecurse) {
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AddBrowserFilesToList((VirtualDirectory)fileBase, list, true);
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}
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hasCustomCaps = true;
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continue;
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}
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string extension = Path.GetExtension(fileBase.Name);
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if (StringUtil.EqualsIgnoreCase(extension, ".browser")) {
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list.Add(fileBase.VirtualPath);
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}
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}
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return hasCustomCaps;
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}
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}
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internal class ApplicationBrowserCapabilitiesCodeGenerator : BrowserCapabilitiesCodeGenerator {
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internal const string FactoryTypeName = "ApplicationBrowserCapabilitiesFactory";
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private OrderedDictionary _browserOverrides;
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private OrderedDictionary _defaultBrowserOverrides;
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private BrowserCapabilitiesFactoryBase _baseInstance;
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private BuildProvider _buildProvider;
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internal ApplicationBrowserCapabilitiesCodeGenerator(BuildProvider buildProvider) {
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_browserOverrides = new OrderedDictionary();
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_defaultBrowserOverrides = new OrderedDictionary();
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_buildProvider = buildProvider;
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}
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internal override bool GenerateOverrides { get { return false; } }
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internal override string TypeName {
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get {
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return FactoryTypeName;
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}
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}
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public override void Create() {
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throw new NotSupportedException();
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}
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private static void AddStringToHashtable(OrderedDictionary table, object key, String content, bool before) {
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ArrayList list = (ArrayList)table[key];
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if (list == null) {
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list = new ArrayList(1);
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table[key] = list;
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}
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if (before) {
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list.Insert(0, content);
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}
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else {
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list.Add(content);
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}
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}
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private static string GetFirstItemFromKey(OrderedDictionary table, object key) {
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ArrayList list = (ArrayList)table[key];
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if (list != null && list.Count > 0) {
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return list[0] as String;
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}
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return null;
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}
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[SuppressMessage("Microsoft.Usage", "CA2303:FlagTypeGetHashCode", Justification = "BrowserDefinition is Internal type - okay")]
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internal override void HandleUnRecognizedParentElement(BrowserDefinition bd, bool isDefault)
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{
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// Use the valid type name so we can find the corresponding parent node.
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String parentName = bd.ParentName;
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int hashKey = bd.GetType().GetHashCode() ^ parentName.GetHashCode();
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// Add the refID in front of the list so they gets to be called first.
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if (isDefault) {
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AddStringToHashtable(_defaultBrowserOverrides, hashKey, bd.Name, bd.IsRefID);
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} else {
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AddStringToHashtable(_browserOverrides, hashKey, bd.Name, bd.IsRefID);
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}
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}
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//generate the code from the parsed BrowserDefinitionTree
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//compile it, and install it in the gac
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internal void GenerateCode(AssemblyBuilder assemblyBuilder) {
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ProcessBrowserFiles(true /*useVirtualPath*/, BrowserCapabilitiesCompiler.AppBrowsersVirtualDir.VirtualPathString);
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ProcessCustomBrowserFiles(true /*useVirtualPath*/, BrowserCapabilitiesCompiler.AppBrowsersVirtualDir.VirtualPathString);
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CodeCompileUnit ccu = new CodeCompileUnit();
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Debug.Assert(BrowserTree != null);
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ArrayList customTreeRoots = new ArrayList();
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for (int i = 0; i < CustomTreeNames.Count; i++) {
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customTreeRoots.Add((BrowserDefinition)(((BrowserTree)CustomTreeList[i])[CustomTreeNames[i]]));
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}
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// namespace ASP
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CodeNamespace cnamespace = new CodeNamespace(BaseCodeDomTreeGenerator.defaultNamespace);
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//GEN: using System;
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cnamespace.Imports.Add(new CodeNamespaceImport("System"));
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//GEN: using System.Web;
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cnamespace.Imports.Add(new CodeNamespaceImport("System.Web"));
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//GEN: using System.Web.Configuration;
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cnamespace.Imports.Add(new CodeNamespaceImport("System.Web.Configuration"));
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//GEN: using System.Reflection;
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cnamespace.Imports.Add(new CodeNamespaceImport("System.Reflection"));
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//GEN: class BrowserCapabilitiesFactory
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ccu.Namespaces.Add(cnamespace);
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Type baseType = BrowserCapabilitiesCompiler.GetBrowserCapabilitiesFactoryBaseType();
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CodeTypeDeclaration factoryType = new CodeTypeDeclaration();
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factoryType.Attributes = MemberAttributes.Private;
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factoryType.IsClass = true;
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factoryType.Name = TypeName;
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factoryType.BaseTypes.Add(new CodeTypeReference(baseType));
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cnamespace.Types.Add(factoryType);
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BindingFlags flags = BindingFlags.IgnoreCase | BindingFlags.Instance | BindingFlags.NonPublic;
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BrowserDefinition bd = null;
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//GEN: protected override object ConfigureBrowserCapabilities(NameValueCollection headers, HttpBrowserCapabilities browserCaps)
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CodeMemberMethod method = new CodeMemberMethod();
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method.Attributes = MemberAttributes.Override | MemberAttributes.Public;
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method.ReturnType = new CodeTypeReference(typeof(void));
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method.Name = "ConfigureCustomCapabilities";
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CodeParameterDeclarationExpression cpde = new CodeParameterDeclarationExpression(typeof(NameValueCollection), "headers");
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method.Parameters.Add(cpde);
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cpde = new CodeParameterDeclarationExpression(typeof(HttpBrowserCapabilities), "browserCaps");
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method.Parameters.Add(cpde);
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factoryType.Members.Add(method);
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for (int i = 0; i < customTreeRoots.Count; i++) {
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GenerateSingleProcessCall((BrowserDefinition)customTreeRoots[i], method);
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}
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foreach (DictionaryEntry entry in _browserOverrides) {
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object key = entry.Key;
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BrowserDefinition firstBrowserDefinition = (BrowserDefinition)BrowserTree[GetFirstItemFromKey(_browserOverrides, key)];
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string parentName = firstBrowserDefinition.ParentName;
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//
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if ((!TargetFrameworkUtil.HasMethod(baseType, parentName + "ProcessBrowsers", flags)) ||
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(!TargetFrameworkUtil.HasMethod(baseType, parentName + "ProcessGateways", flags))) {
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String parentID = firstBrowserDefinition.ParentID;
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if (firstBrowserDefinition != null) {
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throw new ConfigurationErrorsException(SR.GetString(SR.Browser_parentID_Not_Found, parentID), firstBrowserDefinition.XmlNode);
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} else {
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throw new ConfigurationErrorsException(SR.GetString(SR.Browser_parentID_Not_Found, parentID));
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}
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}
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bool isBrowserDefinition = true;
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if (firstBrowserDefinition is GatewayDefinition) {
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isBrowserDefinition = false;
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}
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//GenerateMethodsToOverrideBrowsers
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//Gen: protected override void Xxx_ProcessChildBrowsers(bool ignoreApplicationBrowsers, MNameValueCollection headers, HttpBrowserCapabilities browserCaps) ;
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string methodName = parentName + (isBrowserDefinition ? "ProcessBrowsers" : "ProcessGateways");
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CodeMemberMethod cmm = new CodeMemberMethod();
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cmm.Name = methodName;
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cmm.ReturnType = new CodeTypeReference(typeof(void));
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cmm.Attributes = MemberAttributes.Family | MemberAttributes.Override;
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if (isBrowserDefinition) {
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cpde = new CodeParameterDeclarationExpression(typeof(bool), BrowserCapabilitiesCodeGenerator.IgnoreApplicationBrowserVariableName);
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cmm.Parameters.Add(cpde);
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}
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cpde = new CodeParameterDeclarationExpression(typeof(NameValueCollection), "headers");
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cmm.Parameters.Add(cpde);
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cpde = new CodeParameterDeclarationExpression(typeof(HttpBrowserCapabilities), browserCapsVariable);
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cmm.Parameters.Add(cpde);
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factoryType.Members.Add(cmm);
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ArrayList overrides = (ArrayList)_browserOverrides[key];
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CodeStatementCollection statements = cmm.Statements;
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bool ignoreApplicationBrowsersVarRefGenerated = false;
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foreach (string browserID in overrides) {
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bd = (BrowserDefinition)BrowserTree[browserID];
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if (bd is GatewayDefinition || bd.IsRefID) {
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GenerateSingleProcessCall(bd, cmm);
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}
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else {
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if (!ignoreApplicationBrowsersVarRefGenerated) {
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Debug.Assert(isBrowserDefinition);
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// Gen: if (ignoreApplicationBrowsers) {
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// }
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// else {
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// ...
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// }
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CodeConditionStatement istatement = new CodeConditionStatement();
|
||
|
|
|
||
|
|
istatement.Condition = new CodeVariableReferenceExpression(BrowserCapabilitiesCodeGenerator.IgnoreApplicationBrowserVariableName);
|
||
|
|
|
||
|
|
cmm.Statements.Add(istatement);
|
||
|
|
statements = istatement.FalseStatements;
|
||
|
|
|
||
|
|
ignoreApplicationBrowsersVarRefGenerated = true;
|
||
|
|
}
|
||
|
|
statements = GenerateTrackedSingleProcessCall(statements, bd, cmm);
|
||
|
|
if (_baseInstance == null) {
|
||
|
|
// If we are targeting 4.0 or using the ASP.BrowserCapsFactory assembly generated by
|
||
|
|
// aspnet_regbrowsers.exe, we can simply just instantiate the type.
|
||
|
|
// If not, then we need to use the type BrowserCapabilitiesFactory35 that contains code
|
||
|
|
// from the 2.0 version of BrowserCapabilitiesFactory. This is because "baseType" is the 4.0 type
|
||
|
|
// that contains the new 4.0 definitions.
|
||
|
|
// (Dev10 bug 795509)
|
||
|
|
if (MultiTargetingUtil.IsTargetFramework40OrAbove ||
|
||
|
|
baseType.Assembly == BrowserCapabilitiesCompiler.AspBrowserCapsFactoryAssembly) {
|
||
|
|
_baseInstance = (BrowserCapabilitiesFactoryBase)Activator.CreateInstance(baseType);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
_baseInstance = new BrowserCapabilitiesFactory35();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
int parentDepth = (int)((Triplet)_baseInstance.InternalGetBrowserElements()[parentName]).Third;
|
||
|
|
AddBrowserToCollectionRecursive(bd, parentDepth + 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach (DictionaryEntry entry in _defaultBrowserOverrides) {
|
||
|
|
object key = entry.Key;
|
||
|
|
|
||
|
|
BrowserDefinition firstDefaultBrowserDefinition = (BrowserDefinition)DefaultTree[GetFirstItemFromKey(_defaultBrowserOverrides, key)];
|
||
|
|
string parentName = firstDefaultBrowserDefinition.ParentName;
|
||
|
|
|
||
|
|
if (baseType.GetMethod("Default" + parentName + "ProcessBrowsers", flags) == null) {
|
||
|
|
String parentID = firstDefaultBrowserDefinition.ParentID;
|
||
|
|
if (firstDefaultBrowserDefinition != null) {
|
||
|
|
throw new ConfigurationErrorsException(SR.GetString(SR.DefaultBrowser_parentID_Not_Found, parentID), firstDefaultBrowserDefinition.XmlNode);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
string methodName = "Default" + parentName + "ProcessBrowsers";
|
||
|
|
CodeMemberMethod cmm = new CodeMemberMethod();
|
||
|
|
cmm.Name = methodName;
|
||
|
|
cmm.ReturnType = new CodeTypeReference(typeof(void));
|
||
|
|
cmm.Attributes = MemberAttributes.Family | MemberAttributes.Override;
|
||
|
|
cpde = new CodeParameterDeclarationExpression(typeof(bool), BrowserCapabilitiesCodeGenerator.IgnoreApplicationBrowserVariableName);
|
||
|
|
cmm.Parameters.Add(cpde);
|
||
|
|
cpde = new CodeParameterDeclarationExpression(typeof(NameValueCollection), "headers");
|
||
|
|
cmm.Parameters.Add(cpde);
|
||
|
|
cpde = new CodeParameterDeclarationExpression(typeof(HttpBrowserCapabilities), browserCapsVariable);
|
||
|
|
cmm.Parameters.Add(cpde);
|
||
|
|
factoryType.Members.Add(cmm);
|
||
|
|
|
||
|
|
ArrayList overrides = (ArrayList)_defaultBrowserOverrides[key];
|
||
|
|
|
||
|
|
CodeConditionStatement istatement = new CodeConditionStatement();
|
||
|
|
istatement.Condition = new CodeVariableReferenceExpression(BrowserCapabilitiesCodeGenerator.IgnoreApplicationBrowserVariableName);
|
||
|
|
|
||
|
|
cmm.Statements.Add(istatement);
|
||
|
|
CodeStatementCollection statements = istatement.FalseStatements;
|
||
|
|
|
||
|
|
foreach(string browserID in overrides) {
|
||
|
|
bd = (BrowserDefinition)DefaultTree[browserID];
|
||
|
|
Debug.Assert(!(bd is GatewayDefinition));
|
||
|
|
|
||
|
|
if(bd.IsRefID) {
|
||
|
|
GenerateSingleProcessCall(bd, cmm, "Default");
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
statements = GenerateTrackedSingleProcessCall(statements, bd, cmm, "Default");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Generate process method for the browser elements
|
||
|
|
foreach (DictionaryEntry entry in BrowserTree) {
|
||
|
|
bd = entry.Value as BrowserDefinition;
|
||
|
|
Debug.Assert(bd != null);
|
||
|
|
GenerateProcessMethod(bd, factoryType);
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i = 0; i < customTreeRoots.Count; i++) {
|
||
|
|
foreach (DictionaryEntry entry in (BrowserTree)CustomTreeList[i]) {
|
||
|
|
bd = entry.Value as BrowserDefinition;
|
||
|
|
Debug.Assert(bd != null);
|
||
|
|
GenerateProcessMethod(bd, factoryType);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Generate process method for the default browser elements
|
||
|
|
foreach (DictionaryEntry entry in DefaultTree) {
|
||
|
|
bd = entry.Value as BrowserDefinition;
|
||
|
|
Debug.Assert(bd != null);
|
||
|
|
GenerateProcessMethod(bd, factoryType, "Default");
|
||
|
|
}
|
||
|
|
GenerateOverrideMatchedHeaders(factoryType);
|
||
|
|
GenerateOverrideBrowserElements(factoryType);
|
||
|
|
|
||
|
|
Assembly assembly = BrowserCapabilitiesCompiler.GetBrowserCapabilitiesFactoryBaseType().Assembly;
|
||
|
|
assemblyBuilder.AddAssemblyReference(assembly, ccu);
|
||
|
|
assemblyBuilder.AddCodeCompileUnit(_buildProvider, ccu);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal override void ProcessBrowserNode(XmlNode node, BrowserTree browserTree) {
|
||
|
|
if (node.Name == "defaultBrowser") {
|
||
|
|
throw new ConfigurationErrorsException(SR.GetString(SR.Browser_Not_Allowed_InAppLevel, node.Name), node);
|
||
|
|
}
|
||
|
|
|
||
|
|
base.ProcessBrowserNode(node, browserTree);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal class ApplicationBrowserCapabilitiesBuildProvider : BuildProvider {
|
||
|
|
|
||
|
|
private ApplicationBrowserCapabilitiesCodeGenerator _codeGenerator;
|
||
|
|
|
||
|
|
internal ApplicationBrowserCapabilitiesBuildProvider() {
|
||
|
|
_codeGenerator = new ApplicationBrowserCapabilitiesCodeGenerator(this);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal void AddFile(string virtualPath) {
|
||
|
|
String filePath = HostingEnvironment.MapPathInternal(virtualPath);
|
||
|
|
_codeGenerator.AddFile(filePath);
|
||
|
|
}
|
||
|
|
|
||
|
|
public override void GenerateCode(AssemblyBuilder assemblyBuilder) {
|
||
|
|
_codeGenerator.GenerateCode(assemblyBuilder);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|