ReachUIElementCollectionSerializerAsync.cs source code in C# .NET

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

    Copyright (C) 2004- 2005 Microsoft Corporation
    All rights reserved.
 
    Module Name:
        ReachUIElementCollectionSerializerAsync.cs 
 
    Abstract:
        This file contains the definition of a class that defines 
        the common functionality required to serialize a
        UIElementCollection

    Author: 
        [....] ([....]) 20-May-2004
 
    Revision History: 
--*/
 
using System;
using System.Collections;
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
{ 
    /// 
    /// Class defining common functionality required to
    /// serialize a UIElementCollection.
    ///  
    internal class ReachUIElementCollectionSerializerAsync :
                   ReachSerializerAsync 
    { 
        #region Constructor
 
        /// 
        /// Constructor for class ReachUIElementCollectionSerializer
        /// 
        ///  
        /// The serialization manager, the services of which are
        /// used later in the serialization process of the type. 
        ///  
        public
        ReachUIElementCollectionSerializerAsync( 
            PackageSerializationManager manager
            ):
        base(manager)
        { 

        } 
 
        #endregion Constructor
 
        #region Public Methods
        public
        override
        void 
        AsyncOperation(
            ReachSerializerContext context 
            ) 
        {
            if(context == null) 
            {

            }
 
            switch (context.Action)
            { 
                case SerializerAction.endPersistObjectData: 
                {
                    EndPersistObjectData(); 
                    break;
                }

                case SerializerAction.serializeNextUIElement: 
                {
                    UIElementCollectionSerializerContext thisContext = context as UIElementCollectionSerializerContext; 
 
                    if(thisContext != null)
                    { 
                        SerializeNextUIElement(thisContext.Enumerator,
                                               thisContext.ObjectContext);
                    }
 
                    break;
                } 
 
                default:
                { 
                    base.AsyncOperation(context);
                    break;
                }
            } 
        }
 
        ///  
        /// The main method that is called to serialize a UIElementCollection.
        ///  
        /// 
        /// Instance of object to be serialized.
        /// 
        public 
        override
        void 
        SerializeObject( 
            Object serializedObject
            ) 
        {
            base.SerializeObject(serializedObject);
        }
 
        #endregion Public Methods
 
        #region Internal Methods 

        ///  
        /// The method is called once the object data is discovered at that
        /// point of the serialization process.
        /// 
        ///  
        /// The context of the object to be serialized at this time.
        ///  
        internal 
        override
        void 
        PersistObjectData(
            SerializableObjectContext   serializableObjectContext
            )
        { 
            if (serializableObjectContext == null)
            { 
                throw new ArgumentNullException("serializableObjectContext"); 
            }
 
            IEnumerable enumerableObject = serializableObjectContext.TargetObject as IEnumerable;

            if (enumerableObject == null)
            { 
                throw new XpsSerializationException(ReachSR.Get(ReachSRID.MustBeOfType, "serializableObjectContext.TargetObject", typeof(IEnumerable)));
            } 
 
            //
            // Serialize the PageContent Items contained within the collection 
            //
            SerializeUIElements(serializableObjectContext);
        }
 
        #endregion Internal Methods
 
 
        #region Private Methods
 
        /// 
        /// This is being called to serialize the Page Content items
        /// contained within the collection
        ///  
        private
        void 
        SerializeUIElements( 
            SerializableObjectContext   serializableObjectContext
            ) 
        {
            //
            // Serialize each PageContent in PageContentCollection
            // 
            IEnumerator enumerator = ((IEnumerable)serializableObjectContext.TargetObject).GetEnumerator();
 
            enumerator.Reset(); 

            UIElementCollectionSerializerContext context = new UIElementCollectionSerializerContext(this, 
                                                                                                    serializableObjectContext,
                                                                                                    enumerator,
                                                                                                    SerializerAction.serializeNextUIElement);
 
            ((XpsSerializationManagerAsync)SerializationManager).OperationStack.Push(context);
        } 
 

        private 
        void
        SerializeNextUIElement(
            IEnumerator                 enumerator,
            SerializableObjectContext   serializableObjectContext 
            )
        { 
            if(enumerator.MoveNext()) 
            {
 
                UIElementCollectionSerializerContext context = new UIElementCollectionSerializerContext(this,
                                                                                                        serializableObjectContext,
                                                                                                        enumerator,
                                                                                                        SerializerAction.serializeNextUIElement); 

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

                object uiElement = enumerator.Current; 

                SerializeUIElement(uiElement);
            }
        } 

        ///  
        /// Called to serialize a single UIElement 
        /// 
        private 
        void
        SerializeUIElement(
            object uiElement
            ) 
        {
            Visual visual = uiElement as Visual; 
 
            if(visual != null)
            { 
                ReachSerializer serializer = SerializationManager.GetSerializer(visual);

                if(serializer!=null)
                { 
                    serializer.SerializeObject(visual);
                } 
                else 
                {
                    throw new XpsSerializationException(ReachSR.Get(ReachSRID.ReachSerialization_NoSerializer)); 
                }
            }
        }
 
        #endregion Private Methods
    }; 
 
    internal class UIElementCollectionSerializerContext :
                   ReachSerializerContext 
    {
        public
        UIElementCollectionSerializerContext(
            ReachSerializerAsync        serializer, 
            SerializableObjectContext   objectContext,
            IEnumerator                 enumerator, 
            SerializerAction            action 
            ):
            base(serializer,objectContext,action) 
        {
            this._enumerator = enumerator;
        }
 

        public 
        IEnumerator 
        Enumerator
        { 
            get
            {
                return _enumerator;
            } 
        }
 
        private 
        IEnumerator     _enumerator;
    }; 
}

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