Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Markup / SetterTriggerConditionValueConverter.cs / 1305600 / SetterTriggerConditionValueConverter.cs
/****************************************************************************\ * * File: SetterTriggerConditionValueConverter.cs * * Class for converting a given value (for Setter/Trigger/Condition) to and from a string * * Copyright (C) 2007 by Microsoft Corporation. All rights reserved. * \***************************************************************************/ using System; using System.ComponentModel; // for TypeConverter using System.Globalization; // for CultureInfo using System.Reflection; using MS.Utility; using MS.Internal; using System.Windows; using System.ComponentModel.Design.Serialization; using System.Windows.Documents; using System.Xaml; using System.Xaml.Schema; using System.Collections.Generic; using System.Diagnostics; using System.IO; namespace System.Windows.Markup { ////// Class for converting a given DependencyProperty to and from a string /// public sealed class SetterTriggerConditionValueConverter : TypeConverter { #region Public Methods ////// CanConvertFrom() /// /// ITypeDescriptorContext /// type to convert from ///true if the given type can be converted, false otherwise public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { // We can only convert from a string and that too only if we have all the contextual information // Note: Sometimes even the serializer calls CanConvertFrom in order // to determine if it is a valid converter to use for serialization. if (sourceType == typeof(string) || sourceType == typeof(byte[])) { return true; } return false; } ////// TypeConverter method override. /// /// ITypeDescriptorContext /// Type to convert to ///true if conversion is possible public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { return false; } ////// ConvertFrom() -TypeConverter method override. using the givein name to return DependencyProperty /// /// ITypeDescriptorContext /// CultureInfo /// Object to convert from ///instance of Command public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object source) { return SetterTriggerConditionValueConverter.ResolveValue(context, null, culture, source); } // ////// ConvertTo() - Serialization purposes, returns the string from Command.Name by adding ownerType.FullName /// /// ITypeDescriptorContext /// CultureInfo /// the object to convert from /// the type to convert to ///string object, if the destination type is string public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { throw GetConvertToException(value, destinationType); } #endregion Public Methods internal static object ResolveValue(ITypeDescriptorContext serviceProvider, DependencyProperty property, CultureInfo culture, object source) { if (serviceProvider == null) { throw new ArgumentNullException("serviceProvider"); } if (source == null) { throw new ArgumentNullException("source"); } // Only need to type convert strings and byte[] if (!(source is byte[] || source is String || source is Stream)) { return source; } IXamlSchemaContextProvider ixsc = (serviceProvider.GetService(typeof(IXamlSchemaContextProvider)) as IXamlSchemaContextProvider); if (ixsc == null) { throw new NotSupportedException(SR.Get(SRID.ParserCannotConvertPropertyValue, "Value", typeof(Object).FullName)); } XamlSchemaContext schemaContext = ixsc.SchemaContext; if (property != null) { //Get XamlMember from dp System.Xaml.XamlMember xamlProperty = schemaContext.GetXamlType(property.OwnerType).GetMember(property.Name); if (xamlProperty == null) xamlProperty = schemaContext.GetXamlType(property.OwnerType).GetAttachableMember(property.Name); System.Xaml.Schema.XamlValueConvertertypeConverter = null; if (xamlProperty != null) { // If we have a Baml2006SchemaContext and the property is of type Enum, we already know that the // type converter must be the EnumConverter. if (xamlProperty.Type.UnderlyingType.IsEnum && schemaContext is Baml2006.Baml2006SchemaContext) { typeConverter = XamlReader.BamlSharedSchemaContext.GetTypeConverter(xamlProperty.Type.UnderlyingType); } else { typeConverter = xamlProperty.TypeConverter; if (typeConverter == null) { typeConverter = xamlProperty.Type.TypeConverter; } } } else { typeConverter = schemaContext.GetXamlType(property.PropertyType).TypeConverter; } // No Type converter case... if (typeConverter.ConverterType == null) { return source; } TypeConverter converter = null; if (xamlProperty != null && xamlProperty.Type.UnderlyingType == typeof(Boolean)) { if (source is String) { converter = new BooleanConverter(); } else if (source is byte[]) { byte[] bytes = source as byte[]; if (bytes != null && bytes.Length == 1) { return (bytes[0] != 0); } else { throw new NotSupportedException(SR.Get(SRID.ParserCannotConvertPropertyValue, "Value", typeof(Object).FullName)); } } else { throw new NotSupportedException(SR.Get(SRID.ParserCannotConvertPropertyValue, "Value", typeof(Object).FullName)); } } else { converter = (TypeConverter)typeConverter.ConverterInstance; } return converter.ConvertFrom(serviceProvider, culture, source); } else { return source; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. /****************************************************************************\ * * File: SetterTriggerConditionValueConverter.cs * * Class for converting a given value (for Setter/Trigger/Condition) to and from a string * * Copyright (C) 2007 by Microsoft Corporation. All rights reserved. * \***************************************************************************/ using System; using System.ComponentModel; // for TypeConverter using System.Globalization; // for CultureInfo using System.Reflection; using MS.Utility; using MS.Internal; using System.Windows; using System.ComponentModel.Design.Serialization; using System.Windows.Documents; using System.Xaml; using System.Xaml.Schema; using System.Collections.Generic; using System.Diagnostics; using System.IO; namespace System.Windows.Markup { /// /// Class for converting a given DependencyProperty to and from a string /// public sealed class SetterTriggerConditionValueConverter : TypeConverter { #region Public Methods ////// CanConvertFrom() /// /// ITypeDescriptorContext /// type to convert from ///true if the given type can be converted, false otherwise public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { // We can only convert from a string and that too only if we have all the contextual information // Note: Sometimes even the serializer calls CanConvertFrom in order // to determine if it is a valid converter to use for serialization. if (sourceType == typeof(string) || sourceType == typeof(byte[])) { return true; } return false; } ////// TypeConverter method override. /// /// ITypeDescriptorContext /// Type to convert to ///true if conversion is possible public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { return false; } ////// ConvertFrom() -TypeConverter method override. using the givein name to return DependencyProperty /// /// ITypeDescriptorContext /// CultureInfo /// Object to convert from ///instance of Command public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object source) { return SetterTriggerConditionValueConverter.ResolveValue(context, null, culture, source); } // ////// ConvertTo() - Serialization purposes, returns the string from Command.Name by adding ownerType.FullName /// /// ITypeDescriptorContext /// CultureInfo /// the object to convert from /// the type to convert to ///string object, if the destination type is string public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { throw GetConvertToException(value, destinationType); } #endregion Public Methods internal static object ResolveValue(ITypeDescriptorContext serviceProvider, DependencyProperty property, CultureInfo culture, object source) { if (serviceProvider == null) { throw new ArgumentNullException("serviceProvider"); } if (source == null) { throw new ArgumentNullException("source"); } // Only need to type convert strings and byte[] if (!(source is byte[] || source is String || source is Stream)) { return source; } IXamlSchemaContextProvider ixsc = (serviceProvider.GetService(typeof(IXamlSchemaContextProvider)) as IXamlSchemaContextProvider); if (ixsc == null) { throw new NotSupportedException(SR.Get(SRID.ParserCannotConvertPropertyValue, "Value", typeof(Object).FullName)); } XamlSchemaContext schemaContext = ixsc.SchemaContext; if (property != null) { //Get XamlMember from dp System.Xaml.XamlMember xamlProperty = schemaContext.GetXamlType(property.OwnerType).GetMember(property.Name); if (xamlProperty == null) xamlProperty = schemaContext.GetXamlType(property.OwnerType).GetAttachableMember(property.Name); System.Xaml.Schema.XamlValueConvertertypeConverter = null; if (xamlProperty != null) { // If we have a Baml2006SchemaContext and the property is of type Enum, we already know that the // type converter must be the EnumConverter. if (xamlProperty.Type.UnderlyingType.IsEnum && schemaContext is Baml2006.Baml2006SchemaContext) { typeConverter = XamlReader.BamlSharedSchemaContext.GetTypeConverter(xamlProperty.Type.UnderlyingType); } else { typeConverter = xamlProperty.TypeConverter; if (typeConverter == null) { typeConverter = xamlProperty.Type.TypeConverter; } } } else { typeConverter = schemaContext.GetXamlType(property.PropertyType).TypeConverter; } // No Type converter case... if (typeConverter.ConverterType == null) { return source; } TypeConverter converter = null; if (xamlProperty != null && xamlProperty.Type.UnderlyingType == typeof(Boolean)) { if (source is String) { converter = new BooleanConverter(); } else if (source is byte[]) { byte[] bytes = source as byte[]; if (bytes != null && bytes.Length == 1) { return (bytes[0] != 0); } else { throw new NotSupportedException(SR.Get(SRID.ParserCannotConvertPropertyValue, "Value", typeof(Object).FullName)); } } else { throw new NotSupportedException(SR.Get(SRID.ParserCannotConvertPropertyValue, "Value", typeof(Object).FullName)); } } else { converter = (TypeConverter)typeConverter.ConverterInstance; } return converter.ConvertFrom(serviceProvider, culture, source); } else { return source; } } } } // 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
- CatalogPartChrome.cs
- ValidatingPropertiesEventArgs.cs
- LiteralDesigner.cs
- KeySpline.cs
- XmlSchemaSet.cs
- EditorZoneBase.cs
- FrameworkContentElementAutomationPeer.cs
- XmlDesignerDataSourceView.cs
- OdbcConnectionOpen.cs
- DictionaryChange.cs
- ExpressionWriter.cs
- _Connection.cs
- ToolStripHighContrastRenderer.cs
- ManipulationInertiaStartingEventArgs.cs
- ListControlConvertEventArgs.cs
- MouseGestureConverter.cs
- UnionCqlBlock.cs
- EncodingTable.cs
- XmlJsonWriter.cs
- EntityWrapperFactory.cs
- OutputScopeManager.cs
- UniqueIdentifierService.cs
- AssociationTypeEmitter.cs
- DiffuseMaterial.cs
- SoapExtension.cs
- COSERVERINFO.cs
- ExceptionCollection.cs
- _LazyAsyncResult.cs
- InternalConfigRoot.cs
- DirectoryGroupQuery.cs
- Funcletizer.cs
- SecurityCriticalDataForSet.cs
- ConfigErrorGlyph.cs
- UpWmlMobileTextWriter.cs
- __Filters.cs
- MultiView.cs
- ReflectionTypeLoadException.cs
- CmsInterop.cs
- WindowShowOrOpenTracker.cs
- EditingCommands.cs
- InvalidFilterCriteriaException.cs
- MergePropertyDescriptor.cs
- PublishLicense.cs
- TabItem.cs
- GroupItem.cs
- KnownTypes.cs
- PropertySourceInfo.cs
- FormsAuthenticationConfiguration.cs
- ChangeBlockUndoRecord.cs
- CompositeScriptReference.cs
- StrokeFIndices.cs
- ControlPaint.cs
- TransactionInformation.cs
- URI.cs
- DbModificationCommandTree.cs
- LinearQuaternionKeyFrame.cs
- SoapSchemaMember.cs
- DateTimePicker.cs
- XmlSchemaType.cs
- DataGridViewHeaderCell.cs
- RouteParameter.cs
- StringValidator.cs
- UidManager.cs
- PolyLineSegment.cs
- EditorZone.cs
- SchemaInfo.cs
- ColumnResult.cs
- GridViewEditEventArgs.cs
- MDIWindowDialog.cs
- DataSourceControlBuilder.cs
- HyperLink.cs
- RoleManagerEventArgs.cs
- XmlDataProvider.cs
- SSmlParser.cs
- DataSysAttribute.cs
- ReferencedType.cs
- HandlerBase.cs
- X509Extension.cs
- ApplicationInterop.cs
- MailMessageEventArgs.cs
- ColorDialog.cs
- DataTableClearEvent.cs
- CollectionDataContractAttribute.cs
- ModifiableIteratorCollection.cs
- CodeChecksumPragma.cs
- XmlSchemaSimpleTypeRestriction.cs
- SelectionProviderWrapper.cs
- UnauthorizedWebPart.cs
- CharacterString.cs
- ColorMap.cs
- VisualTreeUtils.cs
- StreamInfo.cs
- InvariantComparer.cs
- BeginStoryboard.cs
- ExpressionHelper.cs
- Processor.cs
- Repeater.cs
- ComponentConverter.cs
- HwndPanningFeedback.cs
- ListGeneralPage.cs