Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Base / MS / Internal / InheritanceContextChangedEventManager.cs / 1 / InheritanceContextChangedEventManager.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: Manager for the InheritanceContextChanged event in the "weak event listener" // pattern. See WeakEventTable.cs for an overview. // //--------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Windows; // WeakEventManager using MS.Internal.WindowsBase; // [FriendAccessAllowed] namespace MS.Internal { ////// Manager for the DependencyObject.InheritanceContextChanged event. /// [FriendAccessAllowed] internal class InheritanceContextChangedEventManager : WeakEventManager { #region Constructors // // Constructors // private InheritanceContextChangedEventManager() { } #endregion Constructors #region Public Methods // // Public Methods // ////// Add a listener to the given source's event. /// public static void AddListener(DependencyObject source, IWeakEventListener listener) { // Freezable.Freeze() relies on the assumption that a frozen Freezable // has no listeners. This is because Freeze() fails if the Freezable // has any Expressions on it, and only Expressions ever listen // to the InheritanceContextChanged event. Debug.Assert(listener is Expression); CurrentManager.ProtectedAddListener(source, listener); } ////// Remove a listener to the given source's event. /// public static void RemoveListener(DependencyObject source, IWeakEventListener listener) { CurrentManager.ProtectedRemoveListener(source, listener); } #endregion Public Methods #region Protected Methods // // Protected Methods // ////// Listen to the given source for the event. /// protected override void StartListening(object source) { DependencyObject typedSource = (DependencyObject)source; typedSource.InheritanceContextChanged += new EventHandler(OnInheritanceContextChanged); } ////// Stop listening to the given source for the event. /// protected override void StopListening(object source) { DependencyObject typedSource = (DependencyObject)source; typedSource.InheritanceContextChanged -= new EventHandler(OnInheritanceContextChanged); } #endregion Protected Methods #region Private Properties // // Private Properties // // get the event manager for the current thread private static InheritanceContextChangedEventManager CurrentManager { get { Type managerType = typeof(InheritanceContextChangedEventManager); InheritanceContextChangedEventManager manager = (InheritanceContextChangedEventManager)GetCurrentManager(managerType); // at first use, create and register a new manager if (manager == null) { manager = new InheritanceContextChangedEventManager(); SetCurrentManager(managerType, manager); } return manager; } } #endregion Private Properties #region Private Methods // // Private Methods // // event handler for InheritanceContextChanged event private void OnInheritanceContextChanged(object sender, EventArgs args) { DeliverEvent(sender, args); } #endregion Private Methods } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: Manager for the InheritanceContextChanged event in the "weak event listener" // pattern. See WeakEventTable.cs for an overview. // //--------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Windows; // WeakEventManager using MS.Internal.WindowsBase; // [FriendAccessAllowed] namespace MS.Internal { ////// Manager for the DependencyObject.InheritanceContextChanged event. /// [FriendAccessAllowed] internal class InheritanceContextChangedEventManager : WeakEventManager { #region Constructors // // Constructors // private InheritanceContextChangedEventManager() { } #endregion Constructors #region Public Methods // // Public Methods // ////// Add a listener to the given source's event. /// public static void AddListener(DependencyObject source, IWeakEventListener listener) { // Freezable.Freeze() relies on the assumption that a frozen Freezable // has no listeners. This is because Freeze() fails if the Freezable // has any Expressions on it, and only Expressions ever listen // to the InheritanceContextChanged event. Debug.Assert(listener is Expression); CurrentManager.ProtectedAddListener(source, listener); } ////// Remove a listener to the given source's event. /// public static void RemoveListener(DependencyObject source, IWeakEventListener listener) { CurrentManager.ProtectedRemoveListener(source, listener); } #endregion Public Methods #region Protected Methods // // Protected Methods // ////// Listen to the given source for the event. /// protected override void StartListening(object source) { DependencyObject typedSource = (DependencyObject)source; typedSource.InheritanceContextChanged += new EventHandler(OnInheritanceContextChanged); } ////// Stop listening to the given source for the event. /// protected override void StopListening(object source) { DependencyObject typedSource = (DependencyObject)source; typedSource.InheritanceContextChanged -= new EventHandler(OnInheritanceContextChanged); } #endregion Protected Methods #region Private Properties // // Private Properties // // get the event manager for the current thread private static InheritanceContextChangedEventManager CurrentManager { get { Type managerType = typeof(InheritanceContextChangedEventManager); InheritanceContextChangedEventManager manager = (InheritanceContextChangedEventManager)GetCurrentManager(managerType); // at first use, create and register a new manager if (manager == null) { manager = new InheritanceContextChangedEventManager(); SetCurrentManager(managerType, manager); } return manager; } } #endregion Private Properties #region Private Methods // // Private Methods // // event handler for InheritanceContextChanged event private void OnInheritanceContextChanged(object sender, EventArgs args) { DeliverEvent(sender, args); } #endregion Private Methods } } // 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
- ListSortDescriptionCollection.cs
- NameValueConfigurationElement.cs
- Pool.cs
- ExtensibleClassFactory.cs
- BindingExpressionBase.cs
- Rect3D.cs
- UnsafeNativeMethods.cs
- FontFamily.cs
- InputMethodStateChangeEventArgs.cs
- XPathDocument.cs
- BitmapEffectGroup.cs
- DependencyObject.cs
- FormViewCommandEventArgs.cs
- FileAuthorizationModule.cs
- mediaeventargs.cs
- ChannelTokenTypeConverter.cs
- GridViewColumnHeader.cs
- WebServiceClientProxyGenerator.cs
- CachedCompositeFamily.cs
- Int16.cs
- WindowsIdentity.cs
- ToolStripItemImageRenderEventArgs.cs
- TagPrefixAttribute.cs
- OrderedHashRepartitionStream.cs
- SiteIdentityPermission.cs
- CriticalFinalizerObject.cs
- IndentedTextWriter.cs
- ipaddressinformationcollection.cs
- AesCryptoServiceProvider.cs
- controlskin.cs
- DoubleCollectionValueSerializer.cs
- XmlSchemaComplexContentRestriction.cs
- FindCriteriaElement.cs
- GridViewColumnHeader.cs
- UnmanagedMemoryAccessor.cs
- FilterElement.cs
- HighlightComponent.cs
- ConfigViewGenerator.cs
- TiffBitmapDecoder.cs
- counter.cs
- SmiContext.cs
- SafeFileMapViewHandle.cs
- ObjectCacheSettings.cs
- KeyboardDevice.cs
- TextFormattingConverter.cs
- UITypeEditors.cs
- SafeRightsManagementPubHandle.cs
- BrushValueSerializer.cs
- querybuilder.cs
- WinFormsUtils.cs
- CollectionExtensions.cs
- SqlColumnizer.cs
- BinaryExpression.cs
- LingerOption.cs
- BindingContext.cs
- NotifyIcon.cs
- HandleCollector.cs
- FixedPageStructure.cs
- ImpersonationContext.cs
- HandledEventArgs.cs
- InstalledVoice.cs
- BaseValidator.cs
- ErrorFormatter.cs
- EditorPartCollection.cs
- COM2PictureConverter.cs
- XmlQueryType.cs
- XmlSignificantWhitespace.cs
- DesignTimeVisibleAttribute.cs
- WindowsTitleBar.cs
- TableDetailsRow.cs
- DispatchRuntime.cs
- Utils.cs
- TemplateEditingFrame.cs
- TypeInfo.cs
- GroupItemAutomationPeer.cs
- GeneralTransform3DTo2D.cs
- Memoizer.cs
- AttributeTable.cs
- HttpAsyncResult.cs
- TextElement.cs
- XmlKeywords.cs
- SystemKeyConverter.cs
- SoapSchemaExporter.cs
- ComplexObject.cs
- PageCache.cs
- SessionStateContainer.cs
- Transform3D.cs
- AtomContentProperty.cs
- SafeCryptContextHandle.cs
- GridItemPattern.cs
- _PooledStream.cs
- IndexExpression.cs
- EdmScalarPropertyAttribute.cs
- OleDbStruct.cs
- RegexWorker.cs
- CacheVirtualItemsEvent.cs
- TextFormatterContext.cs
- Facet.cs
- EqualityComparer.cs
- DifferencingCollection.cs