Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / AppModel / AppModelKnownContentFactory.cs / 1305600 / AppModelKnownContentFactory.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // Provides a method to turn a baml stream into an object. // // // History: // 11/22/04: [....]: Initial Creation // // //--------------------------------------------------------------------------- using System; using System.IO; using System.Net; // WebPermission. using System.Security; using System.Security.Permissions; using System.Windows; using System.Windows.Markup; using System.Windows.Navigation; using MS.Internal.Controls; using MS.Internal.Navigation; using MS.Internal.Utility; using MS.Internal.Resources; using System.IO.Packaging; using MS.Internal.PresentationFramework; using System.ComponentModel; using System.Windows.Controls; namespace MS.Internal.AppModel { // !!!! Note: Those methods are registered as MimeObjectFactory.StreamToObjectFactoryDelegate. The caller expects the // delgate to close stream. internal static class AppModelKnownContentFactory { //// Creates an object instance from a Baml stream and it's Uri // internal static object BamlConverter(Stream stream, Uri baseUri, bool canUseTopLevelBrowser, bool sandboxExternalContent, bool allowAsync, bool isJournalNavigation, out XamlReader asyncObjectConverter) { asyncObjectConverter = null; // If this stream comes from outside the application throw // if (!BaseUriHelper.IsPackApplicationUri(baseUri)) { throw new InvalidOperationException(SR.Get(SRID.BamlIsNotSupportedOutsideOfApplicationResources)); } // If this stream comes from a content file also throw Uri partUri = PackUriHelper.GetPartUri(baseUri); string partName, assemblyName, assemblyVersion, assemblyKey; BaseUriHelper.GetAssemblyNameAndPart(partUri, out partName, out assemblyName, out assemblyVersion, out assemblyKey); if (ContentFileHelper.IsContentFile(partName)) { throw new InvalidOperationException(SR.Get(SRID.BamlIsNotSupportedOutsideOfApplicationResources)); } ParserContext pc = new ParserContext(); pc.BaseUri = baseUri; pc.SkipJournaledProperties = isJournalNavigation; return Application.LoadBamlStreamWithSyncInfo(stream, pc); } //// Creates an object instance from a Xaml stream and it's Uri // ////// Critical - Keep track of this, as sandboxing is meant to be a way for an application to /// isolate xaml content from the hosting application. /// TreatAsSafe - the act of putting this content in a new webbrowser control (and by extention, a new PresentationHost) /// isolates the xaml content from the rest of the application. /// [SecurityCritical, SecurityTreatAsSafe] internal static object XamlConverter(Stream stream, Uri baseUri, bool canUseTopLevelBrowser, bool sandboxExternalContent, bool allowAsync, bool isJournalNavigation, out XamlReader asyncObjectConverter) { asyncObjectConverter = null; if (sandboxExternalContent) { if (SecurityHelper.AreStringTypesEqual(baseUri.Scheme, BaseUriHelper.PackAppBaseUri.Scheme)) { baseUri = BaseUriHelper.ConvertPackUriToAbsoluteExternallyVisibleUri(baseUri); } stream.Close(); WebBrowser webBrowser = new WebBrowser(); webBrowser.Source = baseUri; return webBrowser; } else { ParserContext pc = new ParserContext(); pc.BaseUri = baseUri; pc.SkipJournaledProperties = isJournalNavigation; if (allowAsync) { XamlReader xr = new XamlReader(); asyncObjectConverter = xr; xr.LoadCompleted += new AsyncCompletedEventHandler(OnParserComplete); // XamlReader.Load will close the stream. return xr.LoadAsync(stream, pc); } else { // XamlReader.Load will close the stream. return XamlReader.Load(stream, pc); } } } private static void OnParserComplete(object sender, AsyncCompletedEventArgs args) { // We can get this event from cancellation. We do not care about the error if there is any // that happened as a result of cancellation. if ((! args.Cancelled) && (args.Error != null)) { throw args.Error; } } internal static object HtmlXappConverter(Stream stream, Uri baseUri, bool canUseTopLevelBrowser, bool sandboxExternalContent, bool allowAsync, bool isJournalNavigation, out XamlReader asyncObjectConverter) { asyncObjectConverter = null; if (canUseTopLevelBrowser) { return null; } if (SecurityHelper.AreStringTypesEqual(baseUri.Scheme, BaseUriHelper.PackAppBaseUri.Scheme)) { baseUri = BaseUriHelper.ConvertPackUriToAbsoluteExternallyVisibleUri(baseUri); } stream.Close(); WebBrowser webBrowser = new WebBrowser(); webBrowser.Source = baseUri; return webBrowser; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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