Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Base / MS / Internal / InheritanceContextChangedEventManager.cs / 1305600 / 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) { if (source == null) throw new ArgumentNullException("source"); if (listener == null) throw new ArgumentNullException("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) { if (source == null) throw new ArgumentNullException("source"); if (listener == null) throw new ArgumentNullException("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
- DataGridViewComboBoxEditingControl.cs
- XmlSchemaElement.cs
- ReadOnlyHierarchicalDataSourceView.cs
- SpecialTypeDataContract.cs
- DbExpressionVisitor.cs
- DataSetUtil.cs
- CollectionChangedEventManager.cs
- ResponseBodyWriter.cs
- SymmetricSecurityProtocolFactory.cs
- ControlCachePolicy.cs
- ProgressChangedEventArgs.cs
- Dispatcher.cs
- RoutedPropertyChangedEventArgs.cs
- Automation.cs
- GeneralTransformGroup.cs
- LogPolicy.cs
- FixedDocumentSequencePaginator.cs
- MappedMetaModel.cs
- TraceAsyncResult.cs
- WebHttpDispatchOperationSelector.cs
- SpeechRecognizer.cs
- System.Data_BID.cs
- QilName.cs
- XMLSchema.cs
- EncryptedKey.cs
- Base64Encoder.cs
- TextBoxBase.cs
- xml.cs
- counter.cs
- Substitution.cs
- ModelPropertyDescriptor.cs
- LockedBorderGlyph.cs
- PersonalizationState.cs
- UniqueID.cs
- MetadataItemSerializer.cs
- SharedConnectionInfo.cs
- _SSPISessionCache.cs
- SmiEventSink.cs
- Ref.cs
- EventLogPermissionEntryCollection.cs
- BulletedListEventArgs.cs
- HashSetEqualityComparer.cs
- XmlExtensionFunction.cs
- IsolatedStorage.cs
- TextElementAutomationPeer.cs
- RemotingSurrogateSelector.cs
- HighlightVisual.cs
- StrongNameKeyPair.cs
- WorkflowDefinitionDispenser.cs
- OpacityConverter.cs
- AudioException.cs
- HttpHeaderCollection.cs
- WsatServiceCertificate.cs
- StreamReader.cs
- XmlSchemaObject.cs
- DataGridViewControlCollection.cs
- ExceptionUtil.cs
- StreamGeometry.cs
- XmlTextReaderImplHelpers.cs
- HtmlInputText.cs
- PartitionedStream.cs
- TransactionValidationBehavior.cs
- DataGridViewSortCompareEventArgs.cs
- TreeNodeBindingCollection.cs
- BooleanStorage.cs
- EntityDataSourceStatementEditorForm.cs
- WebPartDescription.cs
- WebConfigurationHostFileChange.cs
- Int16AnimationUsingKeyFrames.cs
- ToolBarOverflowPanel.cs
- DetailsViewInsertEventArgs.cs
- DelegateCompletionCallbackWrapper.cs
- ListView.cs
- FileStream.cs
- StrokeDescriptor.cs
- BamlLocalizabilityResolver.cs
- PropertyValueChangedEvent.cs
- HtmlTableRow.cs
- ExceptionUtility.cs
- XmlSchemaAppInfo.cs
- AllMembershipCondition.cs
- _ChunkParse.cs
- ReaderWriterLock.cs
- RichTextBoxConstants.cs
- ContractReference.cs
- CultureInfoConverter.cs
- DataTemplateKey.cs
- AggregationMinMaxHelpers.cs
- WebPartManagerDesigner.cs
- ShortcutKeysEditor.cs
- OdbcReferenceCollection.cs
- DataPagerFieldCommandEventArgs.cs
- SchemaEntity.cs
- MimeTextImporter.cs
- ExpandedWrapper.cs
- CompilerTypeWithParams.cs
- QilParameter.cs
- WebZone.cs
- Matrix.cs
- WindowsListViewItemStartMenu.cs