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
- TraceHandlerErrorFormatter.cs
- WebBrowserNavigatingEventHandler.cs
- ItemCheckedEvent.cs
- OdbcDataReader.cs
- PageResolution.cs
- ListViewDeletedEventArgs.cs
- UrlMappingsModule.cs
- TreeView.cs
- StringAttributeCollection.cs
- ListItemParagraph.cs
- sqlnorm.cs
- ScriptModule.cs
- BitmapDecoder.cs
- LicFileLicenseProvider.cs
- RemotingAttributes.cs
- ArrangedElement.cs
- ObjectMemberMapping.cs
- XmlSchemaInclude.cs
- util.cs
- AdRotator.cs
- XmlEncodedRawTextWriter.cs
- MaskInputRejectedEventArgs.cs
- XPathMultyIterator.cs
- TableCell.cs
- OleDbSchemaGuid.cs
- ResourceSet.cs
- EntityModelBuildProvider.cs
- FragmentQueryKB.cs
- CredentialCache.cs
- MeasureItemEvent.cs
- PersonalizationStateQuery.cs
- WorkflowRuntimeServiceElementCollection.cs
- RTTrackingProfile.cs
- SyndicationDeserializer.cs
- DbConnectionFactory.cs
- LocatorGroup.cs
- FacetValueContainer.cs
- HttpResponse.cs
- PinnedBufferMemoryStream.cs
- SBCSCodePageEncoding.cs
- GenericWebPart.cs
- HttpCookieCollection.cs
- Attributes.cs
- UrlPath.cs
- FileLoadException.cs
- ExpandedWrapper.cs
- UriTemplateEquivalenceComparer.cs
- MultipartContentParser.cs
- VectorValueSerializer.cs
- SecurityTokenSerializer.cs
- HttpResponseHeader.cs
- AutomationProperty.cs
- ClickablePoint.cs
- MethodRental.cs
- SqlDataSource.cs
- SafeViewOfFileHandle.cs
- TransformDescriptor.cs
- Graph.cs
- ToolBar.cs
- Parser.cs
- AnalyzedTree.cs
- BaseValidator.cs
- HttpSocketManager.cs
- TimelineGroup.cs
- Base64WriteStateInfo.cs
- CombinedGeometry.cs
- xmlsaver.cs
- SystemPens.cs
- CheckBoxAutomationPeer.cs
- HMACMD5.cs
- WebPartEditorApplyVerb.cs
- ProfileServiceManager.cs
- LogArchiveSnapshot.cs
- TimeoutValidationAttribute.cs
- BmpBitmapDecoder.cs
- MissingMemberException.cs
- ByteStreamMessageEncodingElement.cs
- TypeDelegator.cs
- ErrorFormatter.cs
- XmlSchemaAnyAttribute.cs
- IsolatedStorageFileStream.cs
- PipelineComponent.cs
- SortQuery.cs
- WindowsListViewGroup.cs
- HttpConfigurationContext.cs
- ExclusiveTcpListener.cs
- NullExtension.cs
- AnnotationResourceCollection.cs
- WmlObjectListAdapter.cs
- DataGridPagerStyle.cs
- FocusChangedEventArgs.cs
- NativeMethods.cs
- XmlIlGenerator.cs
- DataGridViewRowErrorTextNeededEventArgs.cs
- TypeUsageBuilder.cs
- ValidatorCompatibilityHelper.cs
- CompositionAdorner.cs
- XmlSchemaAttributeGroup.cs
- PanelContainerDesigner.cs
- TransportSecurityProtocol.cs