Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Core / CSharp / MS / Internal / Automation / EventMap.cs / 1 / EventMap.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: // Accessibility event map classes are used to determine if, and how many // listeners there are for events and property changes. // // History: // 07/23/2003 : BrendanM Ported to WCP // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Windows; using System.Windows.Automation; using System.Windows.Automation.Peers; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace MS.Internal.Automation { // Manages the event map that is used to determine if there are Automation // clients interested in specific events. internal static class EventMap { private class EventInfo { internal EventInfo() { NumberOfListeners = 1; } internal int NumberOfListeners; } // Never inline, as we don't want to unnecessarily link the automation DLL. [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] private static bool IsKnownEvent(int id) { if ( id == AutomationElementIdentifiers.ToolTipOpenedEvent.Id || id == AutomationElementIdentifiers.ToolTipClosedEvent.Id || id == AutomationElementIdentifiers.MenuOpenedEvent.Id || id == AutomationElementIdentifiers.MenuClosedEvent.Id || id == AutomationElementIdentifiers.AutomationFocusChangedEvent.Id || id == InvokePatternIdentifiers.InvokedEvent.Id || id == SelectionItemPatternIdentifiers.ElementAddedToSelectionEvent.Id || id == SelectionItemPatternIdentifiers.ElementRemovedFromSelectionEvent.Id || id == SelectionItemPatternIdentifiers.ElementSelectedEvent.Id || id == SelectionPatternIdentifiers.InvalidatedEvent.Id || id == TextPatternIdentifiers.TextSelectionChangedEvent.Id || id == TextPatternIdentifiers.TextChangedEvent.Id || id == AutomationElementIdentifiers.AsyncContentLoadedEvent.Id || id == AutomationElementIdentifiers.AutomationPropertyChangedEvent.Id || id == AutomationElementIdentifiers.StructureChangedEvent.Id ) { return true; } return false; } // Never inline, as we don't want to unnecessarily link the automation DLL. [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] private static AutomationEvent GetRegisteredEventObjectHelper(AutomationEvents eventId) { AutomationEvent eventObject = null; switch(eventId) { case AutomationEvents.ToolTipOpened: eventObject = AutomationElementIdentifiers.ToolTipOpenedEvent; break; case AutomationEvents.ToolTipClosed: eventObject = AutomationElementIdentifiers.ToolTipClosedEvent; break; case AutomationEvents.MenuOpened: eventObject = AutomationElementIdentifiers.MenuOpenedEvent; break; case AutomationEvents.MenuClosed: eventObject = AutomationElementIdentifiers.MenuClosedEvent; break; case AutomationEvents.AutomationFocusChanged: eventObject = AutomationElementIdentifiers.AutomationFocusChangedEvent; break; case AutomationEvents.InvokePatternOnInvoked: eventObject = InvokePatternIdentifiers.InvokedEvent; break; case AutomationEvents.SelectionItemPatternOnElementAddedToSelection: eventObject = SelectionItemPatternIdentifiers.ElementAddedToSelectionEvent; break; case AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection: eventObject = SelectionItemPatternIdentifiers.ElementRemovedFromSelectionEvent; break; case AutomationEvents.SelectionItemPatternOnElementSelected: eventObject = SelectionItemPatternIdentifiers.ElementSelectedEvent; break; case AutomationEvents.SelectionPatternOnInvalidated: eventObject = SelectionPatternIdentifiers.InvalidatedEvent; break; case AutomationEvents.TextPatternOnTextSelectionChanged: eventObject = TextPatternIdentifiers.TextSelectionChangedEvent; break; case AutomationEvents.TextPatternOnTextChanged: eventObject = TextPatternIdentifiers.TextChangedEvent; break; case AutomationEvents.AsyncContentLoaded: eventObject = AutomationElementIdentifiers.AsyncContentLoadedEvent; break; case AutomationEvents.PropertyChanged: eventObject = AutomationElementIdentifiers.AutomationPropertyChangedEvent; break; case AutomationEvents.StructureChanged: eventObject = AutomationElementIdentifiers.StructureChangedEvent; break; default: throw new ArgumentException(SR.Get(SRID.Automation_InvalidEventId), "eventId"); } if (!_eventsTable.ContainsKey(eventObject.Id)) { eventObject = null; } return (eventObject); } internal static void AddEvent(int idEvent) { if (_eventsTable == null) _eventsTable = new Hashtable(20, .1f); if (_eventsTable.ContainsKey(idEvent)) { EventInfo info = (EventInfo)_eventsTable[idEvent]; info.NumberOfListeners++; } // to avoid unbound memory allocations, // register only events that we recognize else if (IsKnownEvent(idEvent)) { _eventsTable[idEvent] = new EventInfo(); } } internal static void RemoveEvent(int idEvent) { if (_eventsTable != null) { // Decrement the count of listeners for this event if (_eventsTable.ContainsKey(idEvent)) { EventInfo info = (EventInfo)_eventsTable[idEvent]; // Update or remove the entry based on remaining listeners info.NumberOfListeners--; if (info.NumberOfListeners <= 0) { _eventsTable.Remove(idEvent); // If no more entries exist kill the table if (_eventsTable.Count == 0) { _eventsTable = null; } } } } } // Unlike GetRegisteredEvent below, // HasRegisteredEvent does NOT cause automation DLLs loading internal static bool HasRegisteredEvent(AutomationEvents eventId) { if (_eventsTable != null && _eventsTable.Count != 0) { return (GetRegisteredEventObjectHelper(eventId) != null); } return (false); } internal static AutomationEvent GetRegisteredEvent(AutomationEvents eventId) { if (_eventsTable != null && _eventsTable.Count != 0) { return (GetRegisteredEventObjectHelper(eventId)); } return (null); } private static Hashtable _eventsTable; // key=event id, data=listener count } } // 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: // Accessibility event map classes are used to determine if, and how many // listeners there are for events and property changes. // // History: // 07/23/2003 : BrendanM Ported to WCP // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Windows; using System.Windows.Automation; using System.Windows.Automation.Peers; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace MS.Internal.Automation { // Manages the event map that is used to determine if there are Automation // clients interested in specific events. internal static class EventMap { private class EventInfo { internal EventInfo() { NumberOfListeners = 1; } internal int NumberOfListeners; } // Never inline, as we don't want to unnecessarily link the automation DLL. [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] private static bool IsKnownEvent(int id) { if ( id == AutomationElementIdentifiers.ToolTipOpenedEvent.Id || id == AutomationElementIdentifiers.ToolTipClosedEvent.Id || id == AutomationElementIdentifiers.MenuOpenedEvent.Id || id == AutomationElementIdentifiers.MenuClosedEvent.Id || id == AutomationElementIdentifiers.AutomationFocusChangedEvent.Id || id == InvokePatternIdentifiers.InvokedEvent.Id || id == SelectionItemPatternIdentifiers.ElementAddedToSelectionEvent.Id || id == SelectionItemPatternIdentifiers.ElementRemovedFromSelectionEvent.Id || id == SelectionItemPatternIdentifiers.ElementSelectedEvent.Id || id == SelectionPatternIdentifiers.InvalidatedEvent.Id || id == TextPatternIdentifiers.TextSelectionChangedEvent.Id || id == TextPatternIdentifiers.TextChangedEvent.Id || id == AutomationElementIdentifiers.AsyncContentLoadedEvent.Id || id == AutomationElementIdentifiers.AutomationPropertyChangedEvent.Id || id == AutomationElementIdentifiers.StructureChangedEvent.Id ) { return true; } return false; } // Never inline, as we don't want to unnecessarily link the automation DLL. [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] private static AutomationEvent GetRegisteredEventObjectHelper(AutomationEvents eventId) { AutomationEvent eventObject = null; switch(eventId) { case AutomationEvents.ToolTipOpened: eventObject = AutomationElementIdentifiers.ToolTipOpenedEvent; break; case AutomationEvents.ToolTipClosed: eventObject = AutomationElementIdentifiers.ToolTipClosedEvent; break; case AutomationEvents.MenuOpened: eventObject = AutomationElementIdentifiers.MenuOpenedEvent; break; case AutomationEvents.MenuClosed: eventObject = AutomationElementIdentifiers.MenuClosedEvent; break; case AutomationEvents.AutomationFocusChanged: eventObject = AutomationElementIdentifiers.AutomationFocusChangedEvent; break; case AutomationEvents.InvokePatternOnInvoked: eventObject = InvokePatternIdentifiers.InvokedEvent; break; case AutomationEvents.SelectionItemPatternOnElementAddedToSelection: eventObject = SelectionItemPatternIdentifiers.ElementAddedToSelectionEvent; break; case AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection: eventObject = SelectionItemPatternIdentifiers.ElementRemovedFromSelectionEvent; break; case AutomationEvents.SelectionItemPatternOnElementSelected: eventObject = SelectionItemPatternIdentifiers.ElementSelectedEvent; break; case AutomationEvents.SelectionPatternOnInvalidated: eventObject = SelectionPatternIdentifiers.InvalidatedEvent; break; case AutomationEvents.TextPatternOnTextSelectionChanged: eventObject = TextPatternIdentifiers.TextSelectionChangedEvent; break; case AutomationEvents.TextPatternOnTextChanged: eventObject = TextPatternIdentifiers.TextChangedEvent; break; case AutomationEvents.AsyncContentLoaded: eventObject = AutomationElementIdentifiers.AsyncContentLoadedEvent; break; case AutomationEvents.PropertyChanged: eventObject = AutomationElementIdentifiers.AutomationPropertyChangedEvent; break; case AutomationEvents.StructureChanged: eventObject = AutomationElementIdentifiers.StructureChangedEvent; break; default: throw new ArgumentException(SR.Get(SRID.Automation_InvalidEventId), "eventId"); } if (!_eventsTable.ContainsKey(eventObject.Id)) { eventObject = null; } return (eventObject); } internal static void AddEvent(int idEvent) { if (_eventsTable == null) _eventsTable = new Hashtable(20, .1f); if (_eventsTable.ContainsKey(idEvent)) { EventInfo info = (EventInfo)_eventsTable[idEvent]; info.NumberOfListeners++; } // to avoid unbound memory allocations, // register only events that we recognize else if (IsKnownEvent(idEvent)) { _eventsTable[idEvent] = new EventInfo(); } } internal static void RemoveEvent(int idEvent) { if (_eventsTable != null) { // Decrement the count of listeners for this event if (_eventsTable.ContainsKey(idEvent)) { EventInfo info = (EventInfo)_eventsTable[idEvent]; // Update or remove the entry based on remaining listeners info.NumberOfListeners--; if (info.NumberOfListeners <= 0) { _eventsTable.Remove(idEvent); // If no more entries exist kill the table if (_eventsTable.Count == 0) { _eventsTable = null; } } } } } // Unlike GetRegisteredEvent below, // HasRegisteredEvent does NOT cause automation DLLs loading internal static bool HasRegisteredEvent(AutomationEvents eventId) { if (_eventsTable != null && _eventsTable.Count != 0) { return (GetRegisteredEventObjectHelper(eventId) != null); } return (false); } internal static AutomationEvent GetRegisteredEvent(AutomationEvents eventId) { if (_eventsTable != null && _eventsTable.Count != 0) { return (GetRegisteredEventObjectHelper(eventId)); } return (null); } private static Hashtable _eventsTable; // key=event id, data=listener count } } // 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
- OracleSqlParser.cs
- sitestring.cs
- TypeExtensionSerializer.cs
- DownloadProgressEventArgs.cs
- ApplicationManager.cs
- AppDomainCompilerProxy.cs
- UdpDiscoveryEndpointElement.cs
- KnownTypeAttribute.cs
- XmlBindingWorker.cs
- WebScriptMetadataMessage.cs
- NameTable.cs
- StringPropertyBuilder.cs
- SafeCertificateStore.cs
- AuthenticationModuleElement.cs
- InputMethodStateChangeEventArgs.cs
- peersecuritysettings.cs
- TextBox.cs
- BuildManagerHost.cs
- ExtenderControl.cs
- SqlUDTStorage.cs
- ResourceExpressionEditorSheet.cs
- ExclusiveCanonicalizationTransform.cs
- TableLayoutPanelCellPosition.cs
- TeredoHelper.cs
- RegexCharClass.cs
- DataPagerFieldCommandEventArgs.cs
- ContextMenuStrip.cs
- Models.cs
- UIElementParagraph.cs
- SqlMetaData.cs
- GenericAuthenticationEventArgs.cs
- SimpleHandlerFactory.cs
- KoreanLunisolarCalendar.cs
- HttpServerUtilityWrapper.cs
- BuildManager.cs
- DesignTimeResourceProviderFactoryAttribute.cs
- MenuItemBindingCollection.cs
- Missing.cs
- WorkflowOwnershipException.cs
- SerializationInfoEnumerator.cs
- DataContractSerializerMessageContractImporter.cs
- PixelFormats.cs
- EdmConstants.cs
- RectangleGeometry.cs
- NameValuePair.cs
- TextEffect.cs
- ComponentResourceManager.cs
- ConfigErrorGlyph.cs
- UriWriter.cs
- TypedTableBaseExtensions.cs
- _CookieModule.cs
- CodeAttributeDeclaration.cs
- OrthographicCamera.cs
- Binding.cs
- MimeWriter.cs
- TextSearch.cs
- ActivityExecutionContextCollection.cs
- Message.cs
- TimeZone.cs
- StatusBarItemAutomationPeer.cs
- ScriptResourceDefinition.cs
- TypedElement.cs
- TextEffectResolver.cs
- ObjectItemNoOpAssemblyLoader.cs
- Style.cs
- MasterPageBuildProvider.cs
- SimpleApplicationHost.cs
- StylusPointProperty.cs
- WindowsTokenRoleProvider.cs
- FaultReason.cs
- ObjectDataSourceMethodEventArgs.cs
- __Filters.cs
- EntityContainerRelationshipSet.cs
- HtmlContainerControl.cs
- Calendar.cs
- UnionCqlBlock.cs
- DbProviderConfigurationHandler.cs
- NamespaceCollection.cs
- SqlBooleanizer.cs
- Grid.cs
- VirtualDirectoryMapping.cs
- GeometryCombineModeValidation.cs
- NumericUpDownAcceleration.cs
- XmlNodeComparer.cs
- RelatedImageListAttribute.cs
- Matrix.cs
- Update.cs
- LinearGradientBrush.cs
- DbgCompiler.cs
- SingleQueryOperator.cs
- EdmScalarPropertyAttribute.cs
- ModelPropertyImpl.cs
- CircleHotSpot.cs
- WorkflowMessageEventHandler.cs
- CleanUpVirtualizedItemEventArgs.cs
- MetaData.cs
- UserControlCodeDomTreeGenerator.cs
- GlyphRunDrawing.cs
- XmlQualifiedNameTest.cs
- ToolStripCustomTypeDescriptor.cs