Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / xsp / System / Web / UI / WebParts / WebPartTransformerAttribute.cs / 1 / WebPartTransformerAttribute.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls.WebParts { using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Diagnostics; using System.Security.Permissions; [AttributeUsage(AttributeTargets.Class)] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class WebPartTransformerAttribute : Attribute { // Cache provider and consumer types for each WebPartTransformer type. We store an array of // 2 Types (consumer, provider) indexed by transformer type. private static readonly Hashtable transformerCache = Hashtable.Synchronized(new Hashtable()); private Type _consumerType; private Type _providerType; public WebPartTransformerAttribute(Type consumerType, Type providerType) { if (consumerType == null) { throw new ArgumentNullException("consumerType"); } if (providerType == null) { throw new ArgumentNullException("providerType"); } _consumerType = consumerType; _providerType = providerType; } public Type ConsumerType { get { return _consumerType; } } public Type ProviderType { get { return _providerType; } } public static Type GetConsumerType(Type transformerType) { return GetTransformerTypes(transformerType)[0]; } public static Type GetProviderType(Type transformerType) { return GetTransformerTypes(transformerType)[1]; } ////// Returns the types a transformer can accept on its "connection points" /// private static Type[] GetTransformerTypes(Type transformerType) { if (transformerType == null) { throw new ArgumentNullException("transformerType"); } if (!transformerType.IsSubclassOf(typeof(WebPartTransformer))) { throw new InvalidOperationException( SR.GetString(SR.WebPartTransformerAttribute_NotTransformer, transformerType.FullName)); } Type[] types = (Type[])transformerCache[transformerType]; if (types == null) { types = GetTransformerTypesFromAttribute(transformerType); transformerCache[transformerType] = types; } return types; } private static Type[] GetTransformerTypesFromAttribute(Type transformerType) { Type[] types = new Type[2]; object[] attributes = transformerType.GetCustomAttributes(typeof(WebPartTransformerAttribute), true); // WebPartTransformerAttribute.AllowMultiple is false Debug.Assert(attributes.Length == 0 || attributes.Length == 1); if (attributes.Length == 1) { WebPartTransformerAttribute attribute = (WebPartTransformerAttribute)attributes[0]; if (attribute.ConsumerType == attribute.ProviderType) { throw new InvalidOperationException(SR.GetString(SR.WebPartTransformerAttribute_SameTypes)); } types[0] = attribute.ConsumerType; types[1] = attribute.ProviderType; } else { throw new InvalidOperationException( SR.GetString(SR.WebPartTransformerAttribute_Missing, transformerType.FullName)); } return types; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls.WebParts { using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Diagnostics; using System.Security.Permissions; [AttributeUsage(AttributeTargets.Class)] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class WebPartTransformerAttribute : Attribute { // Cache provider and consumer types for each WebPartTransformer type. We store an array of // 2 Types (consumer, provider) indexed by transformer type. private static readonly Hashtable transformerCache = Hashtable.Synchronized(new Hashtable()); private Type _consumerType; private Type _providerType; public WebPartTransformerAttribute(Type consumerType, Type providerType) { if (consumerType == null) { throw new ArgumentNullException("consumerType"); } if (providerType == null) { throw new ArgumentNullException("providerType"); } _consumerType = consumerType; _providerType = providerType; } public Type ConsumerType { get { return _consumerType; } } public Type ProviderType { get { return _providerType; } } public static Type GetConsumerType(Type transformerType) { return GetTransformerTypes(transformerType)[0]; } public static Type GetProviderType(Type transformerType) { return GetTransformerTypes(transformerType)[1]; } ////// Returns the types a transformer can accept on its "connection points" /// private static Type[] GetTransformerTypes(Type transformerType) { if (transformerType == null) { throw new ArgumentNullException("transformerType"); } if (!transformerType.IsSubclassOf(typeof(WebPartTransformer))) { throw new InvalidOperationException( SR.GetString(SR.WebPartTransformerAttribute_NotTransformer, transformerType.FullName)); } Type[] types = (Type[])transformerCache[transformerType]; if (types == null) { types = GetTransformerTypesFromAttribute(transformerType); transformerCache[transformerType] = types; } return types; } private static Type[] GetTransformerTypesFromAttribute(Type transformerType) { Type[] types = new Type[2]; object[] attributes = transformerType.GetCustomAttributes(typeof(WebPartTransformerAttribute), true); // WebPartTransformerAttribute.AllowMultiple is false Debug.Assert(attributes.Length == 0 || attributes.Length == 1); if (attributes.Length == 1) { WebPartTransformerAttribute attribute = (WebPartTransformerAttribute)attributes[0]; if (attribute.ConsumerType == attribute.ProviderType) { throw new InvalidOperationException(SR.GetString(SR.WebPartTransformerAttribute_SameTypes)); } types[0] = attribute.ConsumerType; types[1] = attribute.ProviderType; } else { throw new InvalidOperationException( SR.GetString(SR.WebPartTransformerAttribute_Missing, transformerType.FullName)); } return types; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- MenuScrollingVisibilityConverter.cs
- CodeArgumentReferenceExpression.cs
- QilXmlWriter.cs
- ServicesSection.cs
- ScrollBarRenderer.cs
- GridViewColumnCollectionChangedEventArgs.cs
- InputLangChangeEvent.cs
- PrePrepareMethodAttribute.cs
- OpCellTreeNode.cs
- GridPattern.cs
- ExceptionUtil.cs
- Setter.cs
- DescendantQuery.cs
- StateManagedCollection.cs
- AlternateView.cs
- HandlerMappingMemo.cs
- CellTreeNode.cs
- TemplateParser.cs
- SyndicationCategory.cs
- Component.cs
- ColumnResizeAdorner.cs
- EventLogEntryCollection.cs
- MsmqException.cs
- GenericTextProperties.cs
- _Events.cs
- EditingMode.cs
- HandlerBase.cs
- WebUtil.cs
- EntitySqlQueryBuilder.cs
- EntityFunctions.cs
- ToolboxDataAttribute.cs
- CollectionConverter.cs
- WindowShowOrOpenTracker.cs
- QilTargetType.cs
- AutomationPeer.cs
- Point3DCollection.cs
- ReflectionHelper.cs
- ExpressionBinding.cs
- StrokeCollectionConverter.cs
- SeparatorAutomationPeer.cs
- RegionInfo.cs
- UTF8Encoding.cs
- Compiler.cs
- DodSequenceMerge.cs
- IERequestCache.cs
- BindingExpressionBase.cs
- HandlerBase.cs
- Vector3DConverter.cs
- SafeTokenHandle.cs
- HandlerBase.cs
- DesignerRegionCollection.cs
- XPathMultyIterator.cs
- ArgIterator.cs
- NamespaceImport.cs
- ImagingCache.cs
- DataGridViewRowsRemovedEventArgs.cs
- AdornerDecorator.cs
- MetadataItem.cs
- DelimitedListTraceListener.cs
- TypeHelpers.cs
- EntityAdapter.cs
- DocumentGrid.cs
- StrokeCollectionConverter.cs
- Symbol.cs
- PersonalizationProvider.cs
- CommandSet.cs
- ValidationSummary.cs
- TargetFrameworkUtil.cs
- SmtpSection.cs
- PagesSection.cs
- WebControl.cs
- Int16KeyFrameCollection.cs
- DynamicValidatorEventArgs.cs
- HttpResponseHeader.cs
- MruCache.cs
- RequiredFieldValidator.cs
- BeginEvent.cs
- SqlDataSourceQuery.cs
- OperatingSystem.cs
- RSAOAEPKeyExchangeFormatter.cs
- Floater.cs
- ConfigXmlSignificantWhitespace.cs
- XmlEventCache.cs
- JsonSerializer.cs
- Shape.cs
- InternalResources.cs
- HeaderedContentControl.cs
- DesignerHost.cs
- GuidConverter.cs
- AutomationIdentifierGuids.cs
- AutomationIdentifierGuids.cs
- SettingsSavedEventArgs.cs
- SecurityUniqueId.cs
- IntranetCredentialPolicy.cs
- CounterCreationDataCollection.cs
- DictionaryEntry.cs
- AccessControlEntry.cs
- RecognizedPhrase.cs
- PageThemeParser.cs
- Soap.cs