Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Framework / System / Windows / Markup / TreeBuilderXamlTranslator.cs / 1 / TreeBuilderXamlTranslator.cs
/****************************************************************************\
*
* File: TreeBuilderXamlTranslator.cs
*
* Purpose: Class that builds a tree from XAML
*
* History:
* 6/06/01: rogerg Created
* 5/29/03: peterost Ported to wcp
* 11/13/03: peterost Split from XamlTreeBuilder.cs
*
* Copyright (C) 2003 by Microsoft Corporation. All rights reserved.
*
\***************************************************************************/
using System;
using System.Xml;
using System.IO;
using System.Windows;
using System.Text;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Reflection;
using System.Threading;
using MS.Internal;
using MS.Utility;
#if PBTCOMPILER
namespace MS.Internal.Markup
#else
namespace System.Windows.Markup
#endif
{
///
/// Handles overrides for case when XAML is being built to a tree
/// instead of compiling to a file.
///
internal class TreeBuilderXamlTranslator : XamlParser
{
#region Constructors
internal TreeBuilderXamlTranslator(
XamlTreeBuilder treeBuilder,
ParserContext parserContext,
Stream xamlStream,
XamlParseMode parseMode)
: base(parserContext, null /*bamlWriter*/, xamlStream, false /*multipleRoots*/)
{
_treeBuilder = treeBuilder;
XamlParseMode = parseMode;
}
internal TreeBuilderXamlTranslator(
XamlTreeBuilder treeBuilder,
ParserContext parserContext,
XmlReader reader,
bool wrapWithMarkupCompatReader,
XamlParseMode parseMode)
: base (parserContext, null /*bamlWriter*/, reader, wrapWithMarkupCompatReader)
{
_treeBuilder = treeBuilder;
XamlParseMode = parseMode;
}
#endregion Constructors
#region Overrides
///
/// Called when parsing the literal content.
///
public override void WriteLiteralContent(XamlLiteralContentNode xamlLiteralContentNode)
{
if (BamlRecordWriter != null)
BamlRecordWriter.WriteLiteralContent(xamlLiteralContentNode);
}
///
/// Write Start of an Element, which is a tag of the form /
///
/// This is overridden to support building object trees directly from Xaml. In order
/// to do this we have to pass the reader stack to the serializer, so that the bamlreader
/// has all the context information that it needs to continue reading
///
public override void WriteElementStart(XamlElementStartNode xamlElementStartNode)
{
// If we have a serializer for this element's type, then use that
// serializer rather than doing default serialization.
// NOTE: We currently have faith that the serializer will return when
// it is done with the subtree and leave everything in the correct
// state. We may want to limit how much the called serializer can
// read so that it is forced to return at the end of the subtree.
if (xamlElementStartNode.SerializerType != null)
{
XamlSerializer serializer = XamlTypeMapper.CreateInstance(xamlElementStartNode.SerializerType)
as XamlSerializer;
if (serializer == null)
{
ThrowException(SRID.ParserNoSerializer,
xamlElementStartNode.TypeFullName,
xamlElementStartNode.LineNumber,
xamlElementStartNode.LinePosition);
}
else
{
serializer.ConvertXamlToObject(TokenReader, StreamManager,
BamlRecordWriter.ParserContext, xamlElementStartNode,
TreeBuilder.RecordReader);
}
}
else if (BamlRecordWriter != null)
{
BamlRecordWriter.WriteElementStart(xamlElementStartNode);
}
}
///
/// Override of the _Parse method
/// If in Async mode then sit in loop and kick of async thread
/// else call the base implementation
///
internal override void _Parse()
{
bool moreXamlRecords = true;
// to go async we must be in Async mode, have a BamlRecordWriter
// and have a TreeBuilder, if these conditions aren't
// met we are sychronous
if (XamlParseMode == XamlParseMode.Asynchronous)
{
// since binder requires the tag even in async mode we first read
// until we have a root to return to the caller.
// check against the TreeBuilderRoot to make sure the TreeBuilder
// is setup properly
while (moreXamlRecords && (null == TreeBuilder.GetRoot()))
{
moreXamlRecords = ReadXaml(true);
}
// don't kick of a thread if read the entire thing
if (moreXamlRecords)
{
// now start the async loop
ThreadStart threadStart = new ThreadStart(ReadXamlAsync);
Thread thread = new Thread(threadStart);
thread.Start();
}
}
else
{
base._Parse();
}
}
///
/// Used when an exception is thrown -- does shutdown on the parser and throws the exception.
///
/// Exception
internal override void ParseError(XamlParseException e)
{
CloseWriterStream();
TreeBuilder.XamlTreeBuildError(e);
throw e;
}
///
/// Called when the parse was cancelled by the designer or the user.
///
internal override void ParseCancelled()
{
CloseWriterStream();
TreeBuilder.XamlTreeBuildCancel();
base.ParseCancelled();
}
///
/// called when the parse has been completed successfully.
///
internal override void ParseCompleted()
{
CloseWriterStream();
base.ParseCompleted();
}
#endregion Overrides
#region Methods
///
/// Helper function if we are going to a Reader/Writer stream closes the writer
/// side.
///
internal void CloseWriterStream()
{
// only close the BamlRecordWriter. (Rename to Root??)
if (null != BamlRecordWriter)
{
if (BamlRecordWriter.BamlStream is WriterStream)
{
WriterStream writeStream = (WriterStream) BamlRecordWriter.BamlStream;
writeStream.Close();
}
else
{
Debug.Assert(false,"stream writing baml to is not a ReaderWriter Stream");
}
}
}
///
/// Helper function to ReadXaml async.
/// Use this to catch exceptions on the async thread. TreeBuilder will handle
/// on the main thread next chance it gets.
///
void ReadXamlAsync()
{
try
{
ReadXaml(false);
}
catch (Exception e)
{
if (CriticalExceptions.IsCriticalException(e))
{
throw;
}
else
{
// TreeBuilder::HandleAsyncQueueItem() will use this information
// to build (& throw) a full parser exception.
TreeBuilder.ParseException = e;
}
}
}
#endregion Methods
#region Properties
///
/// TreeBuilder associated with this class
///
XamlTreeBuilder TreeBuilder
{
get { return _treeBuilder; }
}
#endregion Properties
#region Data
XamlTreeBuilder _treeBuilder;
#endregion Data
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
/****************************************************************************\
*
* File: TreeBuilderXamlTranslator.cs
*
* Purpose: Class that builds a tree from XAML
*
* History:
* 6/06/01: rogerg Created
* 5/29/03: peterost Ported to wcp
* 11/13/03: peterost Split from XamlTreeBuilder.cs
*
* Copyright (C) 2003 by Microsoft Corporation. All rights reserved.
*
\***************************************************************************/
using System;
using System.Xml;
using System.IO;
using System.Windows;
using System.Text;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Reflection;
using System.Threading;
using MS.Internal;
using MS.Utility;
#if PBTCOMPILER
namespace MS.Internal.Markup
#else
namespace System.Windows.Markup
#endif
{
///
/// Handles overrides for case when XAML is being built to a tree
/// instead of compiling to a file.
///
internal class TreeBuilderXamlTranslator : XamlParser
{
#region Constructors
internal TreeBuilderXamlTranslator(
XamlTreeBuilder treeBuilder,
ParserContext parserContext,
Stream xamlStream,
XamlParseMode parseMode)
: base(parserContext, null /*bamlWriter*/, xamlStream, false /*multipleRoots*/)
{
_treeBuilder = treeBuilder;
XamlParseMode = parseMode;
}
internal TreeBuilderXamlTranslator(
XamlTreeBuilder treeBuilder,
ParserContext parserContext,
XmlReader reader,
bool wrapWithMarkupCompatReader,
XamlParseMode parseMode)
: base (parserContext, null /*bamlWriter*/, reader, wrapWithMarkupCompatReader)
{
_treeBuilder = treeBuilder;
XamlParseMode = parseMode;
}
#endregion Constructors
#region Overrides
///
/// Called when parsing the literal content.
///
public override void WriteLiteralContent(XamlLiteralContentNode xamlLiteralContentNode)
{
if (BamlRecordWriter != null)
BamlRecordWriter.WriteLiteralContent(xamlLiteralContentNode);
}
///
/// Write Start of an Element, which is a tag of the form /
///
/// This is overridden to support building object trees directly from Xaml. In order
/// to do this we have to pass the reader stack to the serializer, so that the bamlreader
/// has all the context information that it needs to continue reading
///
public override void WriteElementStart(XamlElementStartNode xamlElementStartNode)
{
// If we have a serializer for this element's type, then use that
// serializer rather than doing default serialization.
// NOTE: We currently have faith that the serializer will return when
// it is done with the subtree and leave everything in the correct
// state. We may want to limit how much the called serializer can
// read so that it is forced to return at the end of the subtree.
if (xamlElementStartNode.SerializerType != null)
{
XamlSerializer serializer = XamlTypeMapper.CreateInstance(xamlElementStartNode.SerializerType)
as XamlSerializer;
if (serializer == null)
{
ThrowException(SRID.ParserNoSerializer,
xamlElementStartNode.TypeFullName,
xamlElementStartNode.LineNumber,
xamlElementStartNode.LinePosition);
}
else
{
serializer.ConvertXamlToObject(TokenReader, StreamManager,
BamlRecordWriter.ParserContext, xamlElementStartNode,
TreeBuilder.RecordReader);
}
}
else if (BamlRecordWriter != null)
{
BamlRecordWriter.WriteElementStart(xamlElementStartNode);
}
}
///
/// Override of the _Parse method
/// If in Async mode then sit in loop and kick of async thread
/// else call the base implementation
///
internal override void _Parse()
{
bool moreXamlRecords = true;
// to go async we must be in Async mode, have a BamlRecordWriter
// and have a TreeBuilder, if these conditions aren't
// met we are sychronous
if (XamlParseMode == XamlParseMode.Asynchronous)
{
// since binder requires the tag even in async mode we first read
// until we have a root to return to the caller.
// check against the TreeBuilderRoot to make sure the TreeBuilder
// is setup properly
while (moreXamlRecords && (null == TreeBuilder.GetRoot()))
{
moreXamlRecords = ReadXaml(true);
}
// don't kick of a thread if read the entire thing
if (moreXamlRecords)
{
// now start the async loop
ThreadStart threadStart = new ThreadStart(ReadXamlAsync);
Thread thread = new Thread(threadStart);
thread.Start();
}
}
else
{
base._Parse();
}
}
///
/// Used when an exception is thrown -- does shutdown on the parser and throws the exception.
///
/// Exception
internal override void ParseError(XamlParseException e)
{
CloseWriterStream();
TreeBuilder.XamlTreeBuildError(e);
throw e;
}
///
/// Called when the parse was cancelled by the designer or the user.
///
internal override void ParseCancelled()
{
CloseWriterStream();
TreeBuilder.XamlTreeBuildCancel();
base.ParseCancelled();
}
///
/// called when the parse has been completed successfully.
///
internal override void ParseCompleted()
{
CloseWriterStream();
base.ParseCompleted();
}
#endregion Overrides
#region Methods
///
/// Helper function if we are going to a Reader/Writer stream closes the writer
/// side.
///
internal void CloseWriterStream()
{
// only close the BamlRecordWriter. (Rename to Root??)
if (null != BamlRecordWriter)
{
if (BamlRecordWriter.BamlStream is WriterStream)
{
WriterStream writeStream = (WriterStream) BamlRecordWriter.BamlStream;
writeStream.Close();
}
else
{
Debug.Assert(false,"stream writing baml to is not a ReaderWriter Stream");
}
}
}
///
/// Helper function to ReadXaml async.
/// Use this to catch exceptions on the async thread. TreeBuilder will handle
/// on the main thread next chance it gets.
///
void ReadXamlAsync()
{
try
{
ReadXaml(false);
}
catch (Exception e)
{
if (CriticalExceptions.IsCriticalException(e))
{
throw;
}
else
{
// TreeBuilder::HandleAsyncQueueItem() will use this information
// to build (& throw) a full parser exception.
TreeBuilder.ParseException = e;
}
}
}
#endregion Methods
#region Properties
///
/// TreeBuilder associated with this class
///
XamlTreeBuilder TreeBuilder
{
get { return _treeBuilder; }
}
#endregion Properties
#region Data
XamlTreeBuilder _treeBuilder;
#endregion Data
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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