Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / Markup / OptimizedTemplateContentHelper.cs / 1 / OptimizedTemplateContentHelper.cs
/****************************************************************************\ * * File: OptimizedTemplateContentHelper.cs * * Purpose: Main class to handle reading a Template Baml records from a stream * * This is a BamlRecordReader that processes the baml records for shared * template values. When it reaches the end of a shared value, the * OptimizedTemplateContent class adds the value to its shared values table. * If we discover here a record that's not shareable, then the OptimizedTemplateContent * class unwinds what we've done. * * Copyright (C) 2005 by Microsoft Corporation. All rights reserved. * \***************************************************************************/ using System; using System.Xml; using System.IO; using System.Windows; using System.Windows.Media; using System.Windows.Navigation; using System.Text; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Media.Animation; using System.Diagnostics; using System.Reflection; using System.Windows.Threading; using System.Windows.Data; using System.Globalization; using MS.Utility; namespace System.Windows.Markup { internal class OptimizedTemplateContentHelper : BamlRecordReader { #region Internals /***************************************************************************\ * * OptimizedTemplateContentHelper * * Create a new reader. * \***************************************************************************/ internal OptimizedTemplateContentHelper(ParserContext context) { SetPreviousBamlRecordReader(context.BamlReader); BamlStream = context.BamlReader.BamlStream; ParserContext = context; Reset(); } /***************************************************************************\ * * OptimizedTemplateContentHelper.Reset * * Return reader to starting state, ready to load a sequence of baml records. * \***************************************************************************/ internal void Reset() { _subtreeState = BamlSubtreeState.ContinueShareableSubtree; if (RootList == null) { RootList = new ArrayList(1); } else { RootList.Clear(); } ContextStack.Clear(); // Restore the ParserContext back to the primary record reader. ParserContext.BamlReader = PreviousBamlRecordReader; } internal void ReadCustomProperty(BamlPropertyCustomRecord bamlPropertyCustomRecord) { if (bamlPropertyCustomRecord.SerializerTypeId == (short)KnownElements.DependencyPropertyConverter) { GetCustomDependencyPropertyValue(bamlPropertyCustomRecord); } else { string propName = null; Type propType = null; short attributeId = bamlPropertyCustomRecord.AttributeId; DependencyProperty dp = MapTable.GetDependencyProperty(attributeId); if (dp == null) { propType = MapTable.GetCLRPropertyTypeAndNameFromId(attributeId, out propName); } else { propType = dp.PropertyType; propName = dp.Name; } // Read the custom property value into the record. GetCustomValue(bamlPropertyCustomRecord, propType, propName); } } /***************************************************************************\ * * OptimizedTemplateContentHelper.ReadSubtreeRecord * * Read the current record and return an indication of whether we should * continue building a shared tree, or whether some condition was encountered * that makes this tree unshareable. * \***************************************************************************/ internal BamlSubtreeState ReadSubtreeRecord(BamlRecord record) { // Point the ParserContext to this record reader (this gets reset by the Reset // method). ParserContext.BamlReader = this; // If we're not currently in a nested serializer, and this is an element start, // see if we need to go into one. if( _nestedSerializerStartRecord == null && record.RecordType == BamlRecordType.ElementStart) { // See if this has a custom serializer. BamlElementStartRecord bamlElementStartRecord = record as BamlElementStartRecord; if( MapTable.HasSerializerForTypeId(bamlElementStartRecord.TypeId) ) { // This element has its own custom serializer. Keep track of where it starts, // so that when it ends, we can just pass the whole thing off. _nestedSerializerStartRecord = record; Debug.Assert( _subtreeState == BamlSubtreeState.ContinueShareableSubtree ); Debug.Assert( _nestedRecordDepth == 0 ); } } // Are we in a custom serializer? if( _nestedSerializerStartRecord != null ) { Debug.Assert( _subtreeState == BamlSubtreeState.ContinueShareableSubtree ); // Yes, we're in a custom serializer. Update the record depth if( record.RecordType == BamlRecordType.ElementStart ) { int positiveTypeId = -((BamlElementStartRecord)record).TypeId; if (positiveTypeId == (int)KnownElements.StaticResourceExtension) { _subtreeState = BamlSubtreeState.NotShareable; } else { ++_nestedRecordDepth; } } else if( record.RecordType == BamlRecordType.ElementEnd ) { --_nestedRecordDepth; } else if( record.RecordType == BamlRecordType.StaticResourceId || record.RecordType == BamlRecordType.PropertyWithStaticResourceId ) { _subtreeState = BamlSubtreeState.NotShareable; } else if( record.RecordType == BamlRecordType.PropertyWithExtension ) { int positiveTypeId = ((BamlPropertyWithExtensionRecord)record).ExtensionTypeId; if (positiveTypeId == (int)KnownElements.StaticResourceExtension) { _subtreeState = BamlSubtreeState.NotShareable; } } else if (record.RecordType == BamlRecordType.PropertyCustom) { // if this is a custom proeprty, the raw custom value must be read into // the record to "finish" fully reading teh custom record. BamlPropertyCustomRecord bamlPropertyCustomRecord = record as BamlPropertyCustomRecord; ReadCustomProperty(bamlPropertyCustomRecord); } // When we have a StaticResource within an element with a custom serializer, // the element is non-shareable. For example a nested Template with // StaticResources in it. if( _subtreeState == BamlSubtreeState.NotShareable ) { // Reset. _nestedSerializerStartRecord = null; _nestedRecordDepth = 0; } else { // Did we reach the end record for the custom-serialized element? if( _nestedRecordDepth == 0 ) { Debug.Assert( record.RecordType == BamlRecordType.ElementEnd ); // Yes, we're at the end, let it run now. PreParsedRecordsStart = _nestedSerializerStartRecord; PreParsedCurrentRecord = _nestedSerializerStartRecord.Next; // If the first record has a debug extension following it // process the debugging information before the record. if (BamlRecordHelper.HasDebugExtensionRecord(ParserContext.IsDebugBamlStream, PreParsedRecordsStart)) { ProcessDebugBamlRecord(PreParsedCurrentRecord); PreParsedCurrentRecord = PreParsedCurrentRecord.Next; } base.ReadRecord( _nestedSerializerStartRecord ); // Reset. _nestedSerializerStartRecord = null; } } } // Or if we're not in a custom serializer, just call base else { // If the record has a debug extension following it // process the debugging information before the record. if (BamlRecordHelper.HasDebugExtensionRecord(ParserContext.IsDebugBamlStream, record)) { ProcessDebugBamlRecord(record.Next); } base.ReadRecord(record); } // Return the (possibly just updated) state, indicating if we're still // shareable, etc. return _subtreeState; } #endregion Internals #region Overrides /****************************************************************************\ * * OptimizedTemplateContentHelper.ReadElementStartRecord * * Read the start of an element. This involves creating a new object, and * storing it for later addition to the tree or setting as a property. If * the element is a Visual or ContentElement, then the constructed tree * cannot be shared. * \***************************************************************************/ protected override bool ReadElementStartRecord( BamlElementStartRecord bamlElementRecord) { Type elementType = MapTable.GetTypeFromId(bamlElementRecord.TypeId); if( !OptimizedTemplateContent.IsShareableType(elementType) ) { _subtreeState = BamlSubtreeState.NotShareable; return false; } else { return base.ReadElementStartRecord(bamlElementRecord); } } /***************************************************************************\ * * OptimizedTemplateContentHelper.ReadStaticResourceIdRecord * * StaticResourceExtensions within template content are nt shareable because * they will need to be re-evaluated within the scope of the template * generated tree (cause we could have a ResourceDictionary on some element * in there). * \***************************************************************************/ protected override void ReadStaticResourceIdRecord( BamlStaticResourceIdRecord bamlStaticResourceIdRecord) { _subtreeState = BamlSubtreeState.NotShareable; } /****************************************************************************\ * * OptimizedTemplateContentHelper.ReadPropertyWithStaticResourceIdRecord * * StaticResourceExtensions within template content are not shareable because * they will need to be re-evaluated within the scope of the template * generated tree (cause we could have a ResourceDictionary on some element * in there). * \***************************************************************************/ protected override void ReadPropertyWithStaticResourceIdRecord( BamlPropertyWithStaticResourceIdRecord bamlPropertyWithStaticResourceIdRecord) { _subtreeState = BamlSubtreeState.NotShareable; } /****************************************************************************\ * * OptimizedTemplateContentHelper.ReadPropertyWithExtensionRecord * * StaticResourceExtensions within template content are not shareable because * they will need to be re-evaluated within the scope of the template * generated tree (cause we could have a ResourceDictionary on some element * in there). * \***************************************************************************/ protected override void ReadPropertyWithExtensionRecord( BamlPropertyWithExtensionRecord bamlPropertyWithExtensionRecord) { if (bamlPropertyWithExtensionRecord.ExtensionTypeId == (short)KnownElements.StaticResourceExtension) { _subtreeState = BamlSubtreeState.NotShareable; } else { base.ReadPropertyWithExtensionRecord(bamlPropertyWithExtensionRecord); } } /***************************************************************************\ * * OptimizedTemplateContentHelper.ReadConnectionId * * Events cannot be in a shareable section, and this is indicated by * having a connection ID in the baml record sequence. * \***************************************************************************/ protected override void ReadConnectionId( BamlConnectionIdRecord bamlConnectionIdRecord) { _subtreeState = BamlSubtreeState.NotShareable; } /****************************************************************************\ * * OptimizedTemplateContentHelper.ReadPropertyRecord * * Read a string property. If this is for x:Name, then the subtree is * not shareable * \***************************************************************************/ protected override void ReadPropertyRecord( BamlPropertyRecord bamlPropertyRecord) { if (MapTable.DoesAttributeMatch(bamlPropertyRecord.AttributeId, BamlAttributeUsage.RuntimeName)) { _subtreeState = BamlSubtreeState.NotShareable; } else { base.ReadPropertyRecord(bamlPropertyRecord); } } /***************************************************************************\ * * OptimizedTemplateContentHelper.ReadTextRecord * * Only allow whitespace text content, which is generally ignored by * elements. * \***************************************************************************/ protected override void ReadTextRecord(BamlTextRecord bamlTextRecord) { if( (CurrentContext.ContextFlags & ReaderFlags.PropertyComplexClr) != 0 ) { base.ReadTextRecord( bamlTextRecord ); } else { int i; string s = bamlTextRecord.Value; for (i = 0; i < s.Length; i++) { if (!Char.IsWhiteSpace(s[i])) { _subtreeState = BamlSubtreeState.NotShareable; break; } } if( i == s.Length ) { base.ReadTextRecord( bamlTextRecord ); } } } /***************************************************************************\ * * OptimizedTemplateContentHelper.ReadDefAttributeRecord * * A Def tag has been found. If this is for x:Name, then the subtree is * not shareable * \***************************************************************************/ protected override void ReadDefAttributeRecord( BamlDefAttributeRecord bamlDefAttributeRecord) { if (bamlDefAttributeRecord.NameId == BamlMapTable.NameStringId) { _subtreeState = BamlSubtreeState.NotShareable; } else { base.ReadDefAttributeRecord(bamlDefAttributeRecord); } } /***************************************************************************\ * * OptimizedTemplateContentHelper.ReadPropertyComplexEndRecord * * If we hit the end of a complex property, and there is nothing on the * context stack, then we've popped out of the subtree we were building, * so signal this by setting the appropriate state. * \***************************************************************************/ protected override void ReadPropertyComplexEndRecord() { if (CurrentContext == null) { _subtreeState = BamlSubtreeState.EndShareableSubtree; } else { base.ReadPropertyComplexEndRecord(); } } /****************************************************************************\ * * OptimizedTemplateContentHelper.ReadPropertyIListEndRecord * * If we hit the end of a complex property, and there is nothing on the * context stack, then we've popped out of the subtree we were building, * so signal this by setting the appropriate state. * \***************************************************************************/ protected override void ReadPropertyIListEndRecord() { if (CurrentContext == null) { _subtreeState = BamlSubtreeState.EndShareableSubtree; } else { base.ReadPropertyIListEndRecord(); } } /***************************************************************************\ * * OptimizedTemplateContentHelper.ReadPropertyIDictionarEndRecord * * If we hit the end of a complex property, and there is nothing on the * context stack, then we've popped out of the subtree we were building, * so signal this by setting the appropriate state. * \***************************************************************************/ protected override void ReadPropertyIDictionaryEndRecord() { if (CurrentContext == null) { _subtreeState = BamlSubtreeState.EndShareableSubtree; } else { base.ReadPropertyIDictionaryEndRecord(); } } /****************************************************************************\ * * OptimizedTemplateContentHelper.ReadPropertyArrayEndRecord * * If we hit the end of a complex property, and there is nothing on the * context stack, then we've popped out of the subtree we were building, * so signal this by setting the appropriate state. * \***************************************************************************/ protected override void ReadPropertyArrayEndRecord() { if (CurrentContext == null) { _subtreeState = BamlSubtreeState.EndShareableSubtree; } else { base.ReadPropertyArrayEndRecord(); } } // Since TemplateBinding can only be used in Templates this is overridden and // specifically handled here. internal override object GetExtensionValue( IOptimizedMarkupExtension optimizedMarkupExtensionRecord, string propertyName) { object valueObject = null; short extensionTypeId = optimizedMarkupExtensionRecord.ExtensionTypeId; if (extensionTypeId == (short)KnownElements.TemplateBindingExtension) { short memberId = optimizedMarkupExtensionRecord.ValueId; DependencyProperty dp = MapTable.GetDependencyPropertyValueFromId(memberId); if (dp != null) { valueObject = new TemplateBindingExtension(dp); } else { ThrowException(SRID.ParserCannotConvertPropertyValue, propertyName, typeof(TemplateBindingExtension).FullName); } } else { valueObject = base.GetExtensionValue(optimizedMarkupExtensionRecord, propertyName); } return valueObject; } #endregion Overrides #region Data private BamlSubtreeState _subtreeState; private BamlRecord _nestedSerializerStartRecord; private int _nestedRecordDepth; #endregion Data } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- PlatformCulture.cs
- NonSerializedAttribute.cs
- ComboBoxRenderer.cs
- SQLInt16.cs
- SystemIdentity.cs
- MemoryPressure.cs
- ValueType.cs
- ProxyGenerationError.cs
- StringBuilder.cs
- ConnectionManagementSection.cs
- SmiGettersStream.cs
- IPAddressCollection.cs
- TableSectionStyle.cs
- PKCS1MaskGenerationMethod.cs
- BooleanConverter.cs
- WebContext.cs
- ISAPIRuntime.cs
- DoubleLink.cs
- RequestResizeEvent.cs
- MediaCommands.cs
- EnumerationRangeValidationUtil.cs
- BitmapImage.cs
- UserInitiatedRoutedEventPermissionAttribute.cs
- HtmlTextArea.cs
- ObjectDataSourceWizardForm.cs
- Collection.cs
- ReadOnlyNameValueCollection.cs
- HtmlElement.cs
- MasterPageBuildProvider.cs
- TypeConverterHelper.cs
- ExpressionWriter.cs
- DataSourceDesigner.cs
- ConstraintStruct.cs
- AuthenticationException.cs
- QuaternionRotation3D.cs
- InkCanvasAutomationPeer.cs
- GroupStyle.cs
- RootBuilder.cs
- ProgressBar.cs
- RadioButtonList.cs
- ConfigXmlSignificantWhitespace.cs
- DockEditor.cs
- DefaultWorkflowTransactionService.cs
- TemplateComponentConnector.cs
- MemoryMappedFileSecurity.cs
- RecipientInfo.cs
- SerializationHelper.cs
- MenuCommand.cs
- XmlNodeWriter.cs
- basecomparevalidator.cs
- HelpProvider.cs
- SystemIPv4InterfaceProperties.cs
- SafeHandles.cs
- SchemaManager.cs
- WpfSharedBamlSchemaContext.cs
- Transform3DGroup.cs
- CodeSnippetStatement.cs
- CmsUtils.cs
- InternalDispatchObject.cs
- ApplicationServiceHelper.cs
- WindowsContainer.cs
- LogWriteRestartAreaAsyncResult.cs
- DbConnectionHelper.cs
- RtfControls.cs
- ObjectStateEntryOriginalDbUpdatableDataRecord.cs
- MailAddressParser.cs
- Win32.cs
- CompilerScope.cs
- CodeSnippetExpression.cs
- ClassHandlersStore.cs
- ConfigurationSection.cs
- ProfileParameter.cs
- PropertyPushdownHelper.cs
- SystemResources.cs
- LinqDataSourceEditData.cs
- TreeView.cs
- OletxTransactionManager.cs
- BamlResourceDeserializer.cs
- ArrayConverter.cs
- CommandManager.cs
- ErrorReporting.cs
- EnumBuilder.cs
- Storyboard.cs
- ListControl.cs
- TreeNodeBindingCollection.cs
- AdornerHitTestResult.cs
- ConfigurationStrings.cs
- ContractNamespaceAttribute.cs
- FontDialog.cs
- KeyInfo.cs
- BuildManager.cs
- WhitespaceRuleReader.cs
- HTMLTextWriter.cs
- UIElementAutomationPeer.cs
- ControlCachePolicy.cs
- TextFormatter.cs
- WebHttpSecurity.cs
- ToolStripSeparator.cs
- PickDesigner.xaml.cs
- ControlCodeDomSerializer.cs