Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / 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
- SingleObjectCollection.cs
- BaseDataBoundControl.cs
- IsolatedStorageFilePermission.cs
- LocatorPart.cs
- EventLogPermission.cs
- DrawListViewSubItemEventArgs.cs
- XmlQualifiedName.cs
- Mapping.cs
- ExpressionBinding.cs
- DataPagerFieldCollection.cs
- AttributedMetaModel.cs
- DatagridviewDisplayedBandsData.cs
- HttpHandlersSection.cs
- PagePropertiesChangingEventArgs.cs
- SafeRightsManagementQueryHandle.cs
- SqlAliasesReferenced.cs
- MenuItemCollectionEditorDialog.cs
- XmlAutoDetectWriter.cs
- SmtpFailedRecipientException.cs
- PolyLineSegment.cs
- WorkflowApplicationCompletedException.cs
- DriveNotFoundException.cs
- InvalidFilterCriteriaException.cs
- XmlBindingWorker.cs
- XPathScanner.cs
- Label.cs
- GlyphManager.cs
- IPGlobalProperties.cs
- BinaryParser.cs
- embossbitmapeffect.cs
- XmlSerializerAssemblyAttribute.cs
- HashStream.cs
- CommandPlan.cs
- NativeMethods.cs
- CodeObjectCreateExpression.cs
- DayRenderEvent.cs
- IsolatedStoragePermission.cs
- FrameworkObject.cs
- Int32CollectionValueSerializer.cs
- ManualWorkflowSchedulerService.cs
- LinkArea.cs
- SamlAttribute.cs
- UpdatePanelTrigger.cs
- RepeaterItem.cs
- FormView.cs
- CollectionViewSource.cs
- Attributes.cs
- XmlSchemaInferenceException.cs
- XmlSchemaSimpleTypeList.cs
- DeferredBinaryDeserializerExtension.cs
- DataGridViewColumnDividerDoubleClickEventArgs.cs
- ServicesUtilities.cs
- hebrewshape.cs
- UserControlParser.cs
- Material.cs
- DesigntimeLicenseContext.cs
- Command.cs
- GridPattern.cs
- BinaryWriter.cs
- SatelliteContractVersionAttribute.cs
- CorrelationManager.cs
- TreeBuilder.cs
- EndpointReference.cs
- SoapRpcMethodAttribute.cs
- _IPv6Address.cs
- UnsafeNativeMethods.cs
- PersonalizationEntry.cs
- Hashtable.cs
- ExpressionEditorAttribute.cs
- SimpleHandlerBuildProvider.cs
- Quaternion.cs
- SoapExtensionTypeElement.cs
- SymmetricKeyWrap.cs
- ContextProperty.cs
- BindingExpression.cs
- ApplicationInfo.cs
- ProfileParameter.cs
- SqlWebEventProvider.cs
- PasswordTextContainer.cs
- HighlightComponent.cs
- StreamSecurityUpgradeAcceptorBase.cs
- WebAdminConfigurationHelper.cs
- Models.cs
- CommonRemoteMemoryBlock.cs
- CorrelationResolver.cs
- IPEndPoint.cs
- NetCodeGroup.cs
- ValidationErrorCollection.cs
- FunctionQuery.cs
- AutomationPropertyInfo.cs
- DataKey.cs
- DispatchWrapper.cs
- followingquery.cs
- ResourceManager.cs
- LineInfo.cs
- LinkLabel.cs
- DataGridRowClipboardEventArgs.cs
- WrappingXamlSchemaContext.cs
- SqlBinder.cs
- CodeMemberMethod.cs