Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / TrustUi / MS / Internal / documents / Application / PackageDocument.cs / 1 / PackageDocument.cs
//------------------------------------------------------------------------------ //// Copyright (C) Microsoft Corporation. All rights reserved. // //// Extends Document with a single member TrancationalPackage. // // // History: // 08/28/2005: [....]: Initial implementation. //----------------------------------------------------------------------------- using System; using System.IO; using System.IO.Packaging; using System.Security; using MS.Internal.PresentationUI; namespace MS.Internal.Documents.Application { ////// Extends Document with a single member TrancationalPackage. /// [FriendAccessAllowed] internal class PackageDocument : Document { #region Constructors //------------------------------------------------------------------------- // Constructors //------------------------------------------------------------------------- internal PackageDocument(Document dependency) : base(dependency) { } #endregion Constructors #region Internal Properties //-------------------------------------------------------------------------- // Internal Properties //------------------------------------------------------------------------- ////// internal override Stream Destination { get { Invariant.Assert(Dependency != null); return Dependency.Destination; } } ////// /// internal override Stream Source { get { Invariant.Assert(Dependency != null); return Dependency.Source; } } ////// /// internal override Stream Workspace { get { Invariant.Assert(Dependency != null); return Dependency.Workspace; } } ////// /// ////// /// Critical: /// - sets _package we do not want this replaced as it is suppose /// to represent the stream. /// NotSafe: /// - replacing it from a source other than that which is derived from /// the dependent document would result in writing out something other /// than what the user believes they consented to /// internal TransactionalPackage Package { get { return _package.Value; } [SecurityCritical] set { _package.Value = value; } } #endregion Internal Properties #region IDisposable Members //-------------------------------------------------------------------------- // IDisposable Members //-------------------------------------------------------------------------- ////// ////// /// Critical: /// - sets package /// TreatAsSafe: /// - sets value to null when we dispose /// [SecurityCritical, SecurityTreatAsSafe] protected override void Dispose(bool disposing) { try { if (disposing) { if (Package != null) { Package.Close(); Package = null; } } } finally { base.Dispose(disposing); } } #endregion IDisposable Members #region Private Fields //------------------------------------------------------------------------- // Private Fields //-------------------------------------------------------------------------- private SecurityCriticalDataForSet_package; #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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