ReachVisualSerializerAsync.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Print / Reach / Serialization / manager / ReachVisualSerializerAsync.cs / 1 / ReachVisualSerializerAsync.cs
                        
                        
                            /*++ 

    Copyright (C) 2004- 2005 Microsoft Corporation
    All rights reserved.
 
    Module Name:
        ReachVisualSerializerAsync.cs 
 
    Abstract:
 
    Author:
        [....] ([....]) 25-May-2005

    Revision History: 
--*/
using System; 
using System.Collections; 
using System.Collections.Generic;
using System.Collections.Specialized; 
using System.ComponentModel;
using System.Diagnostics;
using System.Reflection;
using System.Xml; 
using System.IO;
using System.Security; 
using System.Security.Permissions; 
using System.ComponentModel.Design.Serialization;
using System.Windows.Xps.Packaging; 
using System.Windows.Documents;
using System.Windows.Media;
using System.Windows.Markup;
 
namespace System.Windows.Xps.Serialization
{ 
    ///  
    ///
    ///  
    internal class ReachVisualSerializerAsync :
                   ReachSerializerAsync
    {
        ///  
        ///
        ///  
        public 
        ReachVisualSerializerAsync(
            PackageSerializationManager manager 
            ):
        base(manager)
        {
        } 

        public 
        override 
        void
        AsyncOperation( 
            ReachSerializerContext context
            )
        {
            if(context == null) 
            {
 
            } 

            switch (context.Action) 
            {
                case SerializerAction.serializeNextTreeNode:
                {
                    ReachVisualSerializerContext thisContext = context as ReachVisualSerializerContext; 

                    if(thisContext != null) 
                    { 
                        SerializeNextTreeNode(thisContext);
                    } 

                    break;
                }
 
                default:
                { 
                    base.AsyncOperation(context); 
                    break;
                } 
            }
        }

        ///  
        ///
        ///  
        public 
        override
        void 
        SerializeObject(
            object serializedObject
            )
        { 
            Visual v = serializedObject as Visual;
 
            if (v == null) 
            {
                throw new ArgumentException(ReachSR.Get(ReachSRID.MustBeOfType, "serializedObject", typeof(Visual))); 
            }

            XmlWriter pageWriter  = ((XpsSerializationManagerAsync)SerializationManager).
                                    PackagingPolicy.AcquireXmlWriterForPage(); 

            XmlWriter resWriter   = ((XpsSerializationManagerAsync)SerializationManager). 
                                    PackagingPolicy.AcquireXmlWriterForResourceDictionary(); 

            SerializeTree(v, resWriter, pageWriter); 
        }

        /// 
        /// 
        /// 
        internal 
        override 
        void
        SerializeObject( 
            SerializablePropertyContext serializedProperty
            )
        {
            // 
            // Do nothing here.
            // We do not support serializing visuals that come in as 
            // properties out of context of a FixedPage or a DocumentPage 
            //
        } 

        private
        void
        SerializeTree( 
            Visual visual,
            XmlWriter resWriter, 
            XmlWriter bodyWriter 
            )
        { 
            Size fixedPageSize = ((XpsSerializationManager)SerializationManager).FixedPageSize;

            VisualTreeFlattener flattener  = ((XpsSerializationManagerAsync)SerializationManager).
                                              VisualSerializationService.AcquireVisualTreeFlattener(resWriter, 
                                                                                                    bodyWriter,
                                                                                                    fixedPageSize); 
 
            if (flattener.StartVisual(visual))
            { 
                Stack contextStack = new Stack();
                contextStack.Push(new NodeContext(visual));

                ReachVisualSerializerContext context = new ReachVisualSerializerContext(this, 
                                                                                        contextStack,
                                                                                        flattener, 
                                                                                        SerializerAction.serializeNextTreeNode); 

                ((XpsSerializationManagerAsync)SerializationManager).OperationStack.Push(context); 
            }
        }

        private 
        void
        SerializeNextTreeNode( 
            ReachVisualSerializerContext context 
            )
        { 
            if(context.ContextStack.Count > 0)
            {
                Stack  contextStack = context.ContextStack;
                VisualTreeFlattener flattener    = context.VisualFlattener; 

                ReachVisualSerializerContext nextContext = new ReachVisualSerializerContext(this, 
                                                                                        contextStack, 
                                                                                        flattener,
                                                                                        SerializerAction.serializeNextTreeNode); 

                ((XpsSerializationManagerAsync)SerializationManager).OperationStack.Push(nextContext);

 
                NodeContext ctx = contextStack.Peek();
 
                Visual v = ctx.GetNextChild(); 

                if (v != null) 
                {
                    if (flattener.StartVisual(v))
                    {
                        contextStack.Push(new NodeContext(v)); 
                    }
                } 
                else 
                {
                    contextStack.Pop(); 
                    flattener.EndVisual();
                }
            }
        } 

        ///  
        /// 
        /// 
        internal 
        override
        void
        PersistObjectData(
            SerializableObjectContext   serializableObjectContext 
            )
        { 
            // 
            // Do nothing here
            // 
        }

        /// 
        /// 
        /// 
        public 
        override 
        XmlWriter
        XmlWriter 
        {
            get
            {
                if(base.XmlWriter == null) 
                {
                    base.XmlWriter = SerializationManager.AcquireXmlWriter(typeof(FixedPage)); 
                } 

                return base.XmlWriter; 
            }

            set
            { 
                base.XmlWriter = null;
                SerializationManager.ReleaseXmlWriter(typeof(FixedPage)); 
            } 
        }
 
        #region Internal Methods

        /// 
        /// 
        /// 
        internal 
        bool 
        SerializeDisguisedVisual(
            object serializedObject 
            )
        {
            Visual v = serializedObject as Visual;
 
            if (v == null)
            { 
                throw new ArgumentException(ReachSR.Get(ReachSRID.MustBeOfType, "serializedObject", typeof(Visual))); 
            }
 
            XmlWriter           pageWriter  = ((XpsSerializationManagerAsync)SerializationManager).
                                              PackagingPolicy.AcquireXmlWriterForPage();

            XmlWriter           resWriter   = ((XpsSerializationManagerAsync)SerializationManager). 
                                              PackagingPolicy.AcquireXmlWriterForResourceDictionary();
 
            Size fixedPageSize = ((XpsSerializationManager)SerializationManager).FixedPageSize; 
            VisualTreeFlattener flattener  = ((XpsSerializationManagerAsync)SerializationManager).
                                              VisualSerializationService.AcquireVisualTreeFlattener(resWriter, 
                                                                                                    pageWriter,
                                                                                                    fixedPageSize);

            return flattener.StartVisual(v); 
        }
 
        #endregion Internal Methods 

    }; 

    internal class ReachVisualSerializerContext :
                   ReachSerializerContext
    { 
        public
        ReachVisualSerializerContext( 
            ReachSerializerAsync        serializer, 
            Stack          contextStack,
            VisualTreeFlattener         flattener, 
            SerializerAction            action
            ):
            base(serializer,action)
        { 
            this._contextStack = contextStack;
            this._flattener    = flattener; 
        } 

 
        public
        Stack
        ContextStack
        { 
            get
            { 
                return _contextStack; 
            }
        } 

        public
        VisualTreeFlattener
        VisualFlattener 
        {
            get 
            { 
                return _flattener;
            } 
        }


        private 
        Stack   _contextStack;
        VisualTreeFlattener  _flattener; 
    }; 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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