111 lines
4.4 KiB
C#
111 lines
4.4 KiB
C#
//----------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//----------------------------------------------------------------
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namespace System.Activities.XamlIntegration
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{
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using System;
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using System.Xaml;
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using System.Runtime;
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static class XamlWriterExtensions
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{
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public static void PropagateLineInfo(XamlWriter targetWriter, IXamlLineInfo lineInfo)
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{
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if (lineInfo != null)
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{
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IXamlLineInfoConsumer consumer = targetWriter as IXamlLineInfoConsumer;
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Fx.Assert(consumer != null && consumer.ShouldProvideLineInfo, "Should only call this function to write into a XamlNodeQueue.Writer, which is always IXamlLineInfoConsumer");
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consumer.SetLineInfo(lineInfo.LineNumber, lineInfo.LinePosition);
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}
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}
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public static void PropagateLineInfo(XamlWriter targetWriter, int lineNumber, int linePosition)
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{
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IXamlLineInfoConsumer consumer = targetWriter as IXamlLineInfoConsumer;
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Fx.Assert(consumer != null && consumer.ShouldProvideLineInfo, "Should only call this function to write into a XamlNodeQueue.Writer, which is always IXamlLineInfoConsumer");
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consumer.SetLineInfo(lineNumber, linePosition);
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}
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// This method is a workaround for TFS bug #788190, since XamlReader.ReadSubtree() should (but doesn't) preserve IXamlLineInfo on the subreader
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public static void Transform(XamlReader reader, XamlWriter writer, IXamlLineInfo readerLineInfo, bool closeWriter)
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{
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IXamlLineInfoConsumer consumer = writer as IXamlLineInfoConsumer;
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Fx.Assert(consumer != null && consumer.ShouldProvideLineInfo, "Should only call this function to write into a XamlNodeQueue.Writer, which is always IXamlLineInfoConsumer");
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bool shouldPassLineNumberInfo = false;
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if (readerLineInfo != null)
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{
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shouldPassLineNumberInfo = true;
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}
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while (reader.Read())
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{
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if (shouldPassLineNumberInfo)
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{
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consumer.SetLineInfo(readerLineInfo.LineNumber, readerLineInfo.LinePosition);
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}
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writer.WriteNode(reader);
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}
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if (closeWriter)
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{
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writer.Close();
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}
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}
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public static void WriteNode(this XamlWriter writer, XamlReader reader, IXamlLineInfo lineInfo)
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{
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PropagateLineInfo(writer, lineInfo);
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writer.WriteNode(reader);
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}
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public static void WriteEndMember(this XamlWriter writer, IXamlLineInfo lineInfo)
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{
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PropagateLineInfo(writer, lineInfo);
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writer.WriteEndMember();
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}
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public static void WriteEndObject(this XamlWriter writer, IXamlLineInfo lineInfo)
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{
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PropagateLineInfo(writer, lineInfo);
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writer.WriteEndObject();
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}
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public static void WriteGetObject(this XamlWriter writer, IXamlLineInfo lineInfo)
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{
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PropagateLineInfo(writer, lineInfo);
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writer.WriteGetObject();
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}
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public static void WriteNamespace(this XamlWriter writer, NamespaceDeclaration namespaceDeclaration, IXamlLineInfo lineInfo)
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{
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PropagateLineInfo(writer, lineInfo);
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writer.WriteNamespace(namespaceDeclaration);
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}
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public static void WriteStartMember(this XamlWriter writer, XamlMember xamlMember, IXamlLineInfo lineInfo)
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{
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PropagateLineInfo(writer, lineInfo);
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writer.WriteStartMember(xamlMember);
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}
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public static void WriteStartMember(this XamlWriter writer, XamlMember xamlMember, int lineNumber, int linePosition)
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{
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PropagateLineInfo(writer, lineNumber, linePosition);
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writer.WriteStartMember(xamlMember);
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}
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public static void WriteStartObject(this XamlWriter writer, XamlType type, IXamlLineInfo lineInfo)
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{
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PropagateLineInfo(writer, lineInfo);
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writer.WriteStartObject(type);
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}
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public static void WriteValue(this XamlWriter writer, object value, IXamlLineInfo lineInfo)
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{
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PropagateLineInfo(writer, lineInfo);
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writer.WriteValue(value);
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}
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}
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}
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