Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Framework / System / Windows / StaticResourceExtension.cs / 1 / StaticResourceExtension.cs
/****************************************************************************\ * * File: StaticResourceExtension.cs * * Class for Xaml markup extension for static resource references. * * Copyright (C) 2004 by Microsoft Corporation. All rights reserved. * \***************************************************************************/ using System; using System.Collections; using System.Diagnostics; using System.Windows; using System.Windows.Documents; using System.Windows.Markup; using System.Reflection; using MS.Internal; namespace System.Windows { ////// Class for Xaml markup extension for static resource references. /// [MarkupExtensionReturnType(typeof(object))] [Localizability(LocalizationCategory.NeverLocalize)] // cannot be localized public class StaticResourceExtension : MarkupExtension { ////// Constructor that takes no parameters /// public StaticResourceExtension() { } ////// Constructor that takes the resource key that this is a static reference to. /// public StaticResourceExtension( object resourceKey) { if (resourceKey == null) { throw new ArgumentNullException("resourceKey"); } _resourceKey = resourceKey; } ////// Return an object that should be set on the targetObject's targetProperty /// for this markup extension. For StaticResourceExtension, this is the object found in /// a resource dictionary in the current parent chain that is keyed by ResourceKey /// /// Object that can provide services for the markup extension. ////// The object to set on this property. /// public override object ProvideValue(IServiceProvider serviceProvider) { IProvideValueTarget provideValueTarget = null; IBamlReader bamlReader = null; if( serviceProvider != null ) { provideValueTarget = serviceProvider.GetService(typeof(IProvideValueTarget)) as IProvideValueTarget; bamlReader = serviceProvider.GetService(typeof(IBamlReader)) as IBamlReader; } if( bamlReader == null ) { throw new InvalidOperationException((SR.Get(SRID.StaticResourceInXamlOnly))); } if( provideValueTarget == null ) { throw new InvalidOperationException( SR.Get(SRID.MarkupExtensionNoContext, GetType().Name, "IProvideValueTarget" )); } return ProvideValueInternal( bamlReader, provideValueTarget.TargetObject, provideValueTarget.TargetProperty, false /*allowDeferredReference*/); } internal object ProvideValueInternal( IBamlReader bamlReader, object targetObject, object targetProperty, bool allowDeferredReference) { if (ResourceKey == null) { throw new InvalidOperationException(SR.Get(SRID.MarkupExtensionResourceKey)); } // Return a DeferredReference when set on a DependencyProperty in a Style bool deferReference = allowDeferredReference && (targetObject is FrameworkElementFactory || targetObject is Setter || targetObject is SharedDp); // Get prefetchedValue DeferredResourceReference prefetchedValue = PrefetchedValue; bool isValidPrefetchedValue = prefetchedValue != null && !prefetchedValue.IsUnset; // Find value BamlRecordReader bamlRecordReader = bamlReader.GetBamlReader() as BamlRecordReader; object value; if (prefetchedValue != null) { // If we have a prefetched value then we we need to look only in the parser stack not in the App or the theme. value = bamlRecordReader.FindResourceInParserStack(ResourceKey, deferReference, false/*mustReturnDeferredResourceReference*/); } else { // If we do not have a prefetched value it is a regular staticresource lookup and hence we must look in the parser stack and the app and the theme. value = bamlRecordReader.FindResourceInParentChain(ResourceKey, deferReference, false /*mustReturnDeferredResourceReference*/); } if (value == DependencyProperty.UnsetValue) { // If both the currently fetched value and the previously fetched value indicate that the // resource has not been found then it is time to throw an exception. if (!isValidPrefetchedValue) { bamlRecordReader.ThrowException(SRID.ParserNoResource , "{" + ResourceKey.ToString() + "}"); } else { // These prefetched values need to be tested for sharedness. Eg. They // could be refering to a resource marked x:Shared="false". In those // cases each reference must yeild a new instance of the resource. prefetchedValue.CheckIfShared = true; if (!deferReference) { // Inflate the prefetched deferred resource reference, because the // current context does not support using deferred references. value = prefetchedValue.GetValue(BaseValueSourceInternal.Unknown); } else { // Use the prefetched value as is value = prefetchedValue; } } } return value; } ////// The key in a Resource Dictionary used to find the object refered to by this /// Markup Extension. /// [ConstructorArgument("resourceKey")] public object ResourceKey { get { return _resourceKey; } set { if (value == null) { throw new ArgumentNullException("value"); } _resourceKey = value; } } ////// This value is used to resolved StaticResourceIds /// internal virtual DeferredResourceReference PrefetchedValue { get { return null; } } private object _resourceKey; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. /****************************************************************************\ * * File: StaticResourceExtension.cs * * Class for Xaml markup extension for static resource references. * * Copyright (C) 2004 by Microsoft Corporation. All rights reserved. * \***************************************************************************/ using System; using System.Collections; using System.Diagnostics; using System.Windows; using System.Windows.Documents; using System.Windows.Markup; using System.Reflection; using MS.Internal; namespace System.Windows { ////// Class for Xaml markup extension for static resource references. /// [MarkupExtensionReturnType(typeof(object))] [Localizability(LocalizationCategory.NeverLocalize)] // cannot be localized public class StaticResourceExtension : MarkupExtension { ////// Constructor that takes no parameters /// public StaticResourceExtension() { } ////// Constructor that takes the resource key that this is a static reference to. /// public StaticResourceExtension( object resourceKey) { if (resourceKey == null) { throw new ArgumentNullException("resourceKey"); } _resourceKey = resourceKey; } ////// Return an object that should be set on the targetObject's targetProperty /// for this markup extension. For StaticResourceExtension, this is the object found in /// a resource dictionary in the current parent chain that is keyed by ResourceKey /// /// Object that can provide services for the markup extension. ////// The object to set on this property. /// public override object ProvideValue(IServiceProvider serviceProvider) { IProvideValueTarget provideValueTarget = null; IBamlReader bamlReader = null; if( serviceProvider != null ) { provideValueTarget = serviceProvider.GetService(typeof(IProvideValueTarget)) as IProvideValueTarget; bamlReader = serviceProvider.GetService(typeof(IBamlReader)) as IBamlReader; } if( bamlReader == null ) { throw new InvalidOperationException((SR.Get(SRID.StaticResourceInXamlOnly))); } if( provideValueTarget == null ) { throw new InvalidOperationException( SR.Get(SRID.MarkupExtensionNoContext, GetType().Name, "IProvideValueTarget" )); } return ProvideValueInternal( bamlReader, provideValueTarget.TargetObject, provideValueTarget.TargetProperty, false /*allowDeferredReference*/); } internal object ProvideValueInternal( IBamlReader bamlReader, object targetObject, object targetProperty, bool allowDeferredReference) { if (ResourceKey == null) { throw new InvalidOperationException(SR.Get(SRID.MarkupExtensionResourceKey)); } // Return a DeferredReference when set on a DependencyProperty in a Style bool deferReference = allowDeferredReference && (targetObject is FrameworkElementFactory || targetObject is Setter || targetObject is SharedDp); // Get prefetchedValue DeferredResourceReference prefetchedValue = PrefetchedValue; bool isValidPrefetchedValue = prefetchedValue != null && !prefetchedValue.IsUnset; // Find value BamlRecordReader bamlRecordReader = bamlReader.GetBamlReader() as BamlRecordReader; object value; if (prefetchedValue != null) { // If we have a prefetched value then we we need to look only in the parser stack not in the App or the theme. value = bamlRecordReader.FindResourceInParserStack(ResourceKey, deferReference, false/*mustReturnDeferredResourceReference*/); } else { // If we do not have a prefetched value it is a regular staticresource lookup and hence we must look in the parser stack and the app and the theme. value = bamlRecordReader.FindResourceInParentChain(ResourceKey, deferReference, false /*mustReturnDeferredResourceReference*/); } if (value == DependencyProperty.UnsetValue) { // If both the currently fetched value and the previously fetched value indicate that the // resource has not been found then it is time to throw an exception. if (!isValidPrefetchedValue) { bamlRecordReader.ThrowException(SRID.ParserNoResource , "{" + ResourceKey.ToString() + "}"); } else { // These prefetched values need to be tested for sharedness. Eg. They // could be refering to a resource marked x:Shared="false". In those // cases each reference must yeild a new instance of the resource. prefetchedValue.CheckIfShared = true; if (!deferReference) { // Inflate the prefetched deferred resource reference, because the // current context does not support using deferred references. value = prefetchedValue.GetValue(BaseValueSourceInternal.Unknown); } else { // Use the prefetched value as is value = prefetchedValue; } } } return value; } ////// The key in a Resource Dictionary used to find the object refered to by this /// Markup Extension. /// [ConstructorArgument("resourceKey")] public object ResourceKey { get { return _resourceKey; } set { if (value == null) { throw new ArgumentNullException("value"); } _resourceKey = value; } } ////// This value is used to resolved StaticResourceIds /// internal virtual DeferredResourceReference PrefetchedValue { get { return null; } } private object _resourceKey; } } // 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
- Facet.cs
- SoundPlayer.cs
- OutputCacheProfile.cs
- ModelItemCollectionImpl.cs
- FixedSOMPageConstructor.cs
- TreeViewImageIndexConverter.cs
- TypeUnloadedException.cs
- TextParentUndoUnit.cs
- BooleanAnimationBase.cs
- TokenFactoryBase.cs
- StateRuntime.cs
- DateTimeParse.cs
- RichTextBox.cs
- ScaleTransform.cs
- ConfigurationStrings.cs
- BasicExpressionVisitor.cs
- MultipleViewPattern.cs
- ServiceOperationParameter.cs
- NullableDecimalMinMaxAggregationOperator.cs
- IntegerValidatorAttribute.cs
- ProcessHost.cs
- TextRangeBase.cs
- MemoryRecordBuffer.cs
- SessionMode.cs
- CoTaskMemUnicodeSafeHandle.cs
- DesignerImageAdapter.cs
- FaultContractAttribute.cs
- XmlValidatingReaderImpl.cs
- FixedSOMTableRow.cs
- DashStyles.cs
- DoubleIndependentAnimationStorage.cs
- ConnectionPointCookie.cs
- TemplateField.cs
- QueryOperatorEnumerator.cs
- XmlElementList.cs
- RenderData.cs
- WebHttpSecurityElement.cs
- SchemaNames.cs
- DataStorage.cs
- AppDomainGrammarProxy.cs
- TextWriterTraceListener.cs
- ConfigXmlDocument.cs
- IncrementalCompileAnalyzer.cs
- HtmlInputImage.cs
- BinaryCommonClasses.cs
- DropTarget.cs
- Line.cs
- WindowsSpinner.cs
- SessionStateSection.cs
- EventManager.cs
- ScriptingProfileServiceSection.cs
- XmlArrayItemAttributes.cs
- BulletChrome.cs
- Variant.cs
- Single.cs
- MDIClient.cs
- ResourceDescriptionAttribute.cs
- UnsettableComboBox.cs
- DataColumnPropertyDescriptor.cs
- DefaultValueTypeConverter.cs
- SqlExpressionNullability.cs
- EdmComplexTypeAttribute.cs
- String.cs
- Hash.cs
- MouseButtonEventArgs.cs
- SoapIncludeAttribute.cs
- ItemContainerGenerator.cs
- DataIdProcessor.cs
- Polyline.cs
- DrawingVisual.cs
- PackageDocument.cs
- DefaultSection.cs
- PerfService.cs
- AsymmetricSignatureDeformatter.cs
- ValidationResult.cs
- RecoverInstanceLocksCommand.cs
- Registry.cs
- PeerNameRecordCollection.cs
- DisposableCollectionWrapper.cs
- DbException.cs
- CustomError.cs
- WebDescriptionAttribute.cs
- HttpResponseWrapper.cs
- COM2ExtendedUITypeEditor.cs
- CodeDefaultValueExpression.cs
- OpenFileDialog.cs
- ContentIterators.cs
- GlobalItem.cs
- ByteViewer.cs
- VisualStyleTypesAndProperties.cs
- SecurityTraceRecordHelper.cs
- ToolboxControl.cs
- HelpOperationInvoker.cs
- WebPartCloseVerb.cs
- ApplicationDirectory.cs
- TreeSet.cs
- FixedSOMTextRun.cs
- TextBoxBase.cs
- UniqueEventHelper.cs
- TextUtf8RawTextWriter.cs