XamlWriterExtensions.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / XamlIntegration / XamlWriterExtensions.cs / 1305376 / XamlWriterExtensions.cs
                        

                        
                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------

namespace System.Activities.XamlIntegration 
{
    using System; 
    using System.Xaml; 
    using System.Runtime;
 
    static class XamlWriterExtensions
    {
        public static void PropagateLineInfo(XamlWriter targetWriter, IXamlLineInfo lineInfo)
        { 
            if (lineInfo != null)
            { 
                IXamlLineInfoConsumer consumer = targetWriter as IXamlLineInfoConsumer; 
                Fx.Assert(consumer != null && consumer.ShouldProvideLineInfo, "Should only call this function to write into a XamlNodeQueue.Writer, which is always IXamlLineInfoConsumer");
                consumer.SetLineInfo(lineInfo.LineNumber, lineInfo.LinePosition); 
            }
        }

        public static void PropagateLineInfo(XamlWriter targetWriter, int lineNumber, int linePosition) 
        {
            IXamlLineInfoConsumer consumer = targetWriter as IXamlLineInfoConsumer; 
            Fx.Assert(consumer != null && consumer.ShouldProvideLineInfo, "Should only call this function to write into a XamlNodeQueue.Writer, which is always IXamlLineInfoConsumer"); 
            consumer.SetLineInfo(lineNumber, linePosition);
        } 

        // This method is a workaround for TFS bug #788190, since XamlReader.ReadSubtree() should (but doesn't) preserve IXamlLineInfo on the subreader
        public static void Transform(XamlReader reader, XamlWriter writer, IXamlLineInfo readerLineInfo, bool closeWriter)
        { 
            IXamlLineInfoConsumer consumer = writer as IXamlLineInfoConsumer;
            Fx.Assert(consumer != null && consumer.ShouldProvideLineInfo, "Should only call this function to write into a XamlNodeQueue.Writer, which is always IXamlLineInfoConsumer"); 
            bool shouldPassLineNumberInfo = false; 
            if (readerLineInfo != null)
            { 
                shouldPassLineNumberInfo = true;
            }

            while (reader.Read()) 
            {
                if (shouldPassLineNumberInfo) 
                { 
                    consumer.SetLineInfo(readerLineInfo.LineNumber, readerLineInfo.LinePosition);
                } 
                writer.WriteNode(reader);
            }

            if (closeWriter) 
            {
                writer.Close(); 
            } 
        }
 
        public static void WriteNode(this XamlWriter writer, XamlReader reader, IXamlLineInfo lineInfo)
        {
            PropagateLineInfo(writer, lineInfo);
            writer.WriteNode(reader); 
        }
 
        public static void WriteEndMember(this XamlWriter writer, IXamlLineInfo lineInfo) 
        {
            PropagateLineInfo(writer, lineInfo); 
            writer.WriteEndMember();
        }

        public static void WriteEndObject(this XamlWriter writer, IXamlLineInfo lineInfo) 
        {
            PropagateLineInfo(writer, lineInfo); 
            writer.WriteEndObject(); 
        }
 
        public static void WriteGetObject(this XamlWriter writer, IXamlLineInfo lineInfo)
        {
            PropagateLineInfo(writer, lineInfo);
            writer.WriteGetObject(); 
        }
 
        public static void WriteNamespace(this XamlWriter writer, NamespaceDeclaration namespaceDeclaration, IXamlLineInfo lineInfo) 
        {
            PropagateLineInfo(writer, lineInfo); 
            writer.WriteNamespace(namespaceDeclaration);
        }

        public static void WriteStartMember(this XamlWriter writer, XamlMember xamlMember, IXamlLineInfo lineInfo) 
        {
            PropagateLineInfo(writer, lineInfo); 
            writer.WriteStartMember(xamlMember); 
        }
 
        public static void WriteStartMember(this XamlWriter writer, XamlMember xamlMember, int lineNumber, int linePosition)
        {
            PropagateLineInfo(writer, lineNumber, linePosition);
            writer.WriteStartMember(xamlMember); 
        }
 
        public static void WriteStartObject(this XamlWriter writer, XamlType type, IXamlLineInfo lineInfo) 
        {
            PropagateLineInfo(writer, lineInfo); 
            writer.WriteStartObject(type);
        }

        public static void WriteValue(this XamlWriter writer, object value, IXamlLineInfo lineInfo) 
        {
            PropagateLineInfo(writer, lineInfo); 
            writer.WriteValue(value); 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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