Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / MS / Internal / Automation / ValueProviderWrapper.cs / 1305600 / ValueProviderWrapper.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Value pattern provider wrapper for WCP // // History: // 07/21/2003 : BrendanM Ported to WCP // //--------------------------------------------------------------------------- using System; using System.Windows.Threading; using System.Windows.Media; using System.Windows.Automation; using System.Windows.Automation.Provider; using System.Windows.Automation.Peers; namespace MS.Internal.Automation { // Automation/WCP Wrapper class: Implements that UIAutomation I...Provider // interface, and calls through to a WCP AutomationPeer which implements the corresponding // I...Provider inteface. Marshalls the call from the RPC thread onto the // target AutomationPeer's context. // // Class has two major parts to it: // * Implementation of the I...Provider, which uses Dispatcher.Invoke // to call a private method (lives in second half of the class) via a delegate, // if necessary, packages any params into an object param. Return type of Invoke // must be cast from object to appropriate type. // * private methods - one for each interface entry point - which get called back // on the right context. These call through to the peer that's actually // implenting the I...Provider version of the interface. internal class ValueProviderWrapper: MarshalByRefObject, IValueProvider { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors private ValueProviderWrapper( AutomationPeer peer, IValueProvider iface ) { _peer = peer; _iface = iface; } #endregion Constructors //------------------------------------------------------ // // Interface IValueProvider // //----------------------------------------------------- #region Interface IValueProvider public void SetValue( string val ) { ElementUtil.Invoke( _peer, new DispatcherOperationCallback( SetValueInternal ), val ); } public string Value { get { return (string) ElementUtil.Invoke( _peer, new DispatcherOperationCallback( GetValue ), null ); } } public bool IsReadOnly { get { return (bool) ElementUtil.Invoke( _peer, new DispatcherOperationCallback( GetIsReadOnly ), null ); } } #endregion Interface IValueProvider //------------------------------------------------------ // // Internal Methods // //------------------------------------------------------ #region Internal Methods internal static object Wrap( AutomationPeer peer, object iface ) { return new ValueProviderWrapper( peer, (IValueProvider) iface ); } #endregion Internal Methods //----------------------------------------------------- // // Private Methods // //------------------------------------------------------ #region Private Methods private object SetValueInternal( object arg ) { _iface.SetValue( (string)arg ); return null; } private object GetValue( object unused ) { return _iface.Value; } private object GetIsReadOnly( object unused ) { return _iface.IsReadOnly; } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //----------------------------------------------------- #region Private Fields private AutomationPeer _peer; private IValueProvider _iface; #endregion Private Fields } } // 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
- ScrollPatternIdentifiers.cs
- DataGridViewColumnHeaderCell.cs
- _NegoState.cs
- SizeF.cs
- SecurityTokenSpecification.cs
- SurrogateSelector.cs
- hresults.cs
- WorkerRequest.cs
- StringHelper.cs
- MemoryStream.cs
- SynchronizationContext.cs
- SqlVersion.cs
- CurrentChangingEventArgs.cs
- FocusTracker.cs
- SystemTcpConnection.cs
- PropertyIDSet.cs
- ObjectAnimationUsingKeyFrames.cs
- AdornedElementPlaceholder.cs
- SqlNodeAnnotations.cs
- Mouse.cs
- ReflectionTypeLoadException.cs
- BuildProviderCollection.cs
- SimpleWebHandlerParser.cs
- AesManaged.cs
- SafeWaitHandle.cs
- IconConverter.cs
- Renderer.cs
- SafeCryptContextHandle.cs
- WasAdminWrapper.cs
- SingleKeyFrameCollection.cs
- OdbcConnectionHandle.cs
- TextServicesContext.cs
- SchemaCollectionCompiler.cs
- PtsHost.cs
- TransformGroup.cs
- SystemIPv6InterfaceProperties.cs
- TransformerInfoCollection.cs
- Point.cs
- ElementFactory.cs
- followingsibling.cs
- WebPartConnectionsCloseVerb.cs
- TrackingServices.cs
- WebRequestModulesSection.cs
- RawStylusActions.cs
- addressfiltermode.cs
- MimeTypeAttribute.cs
- EdmItemCollection.cs
- XPathExpr.cs
- SqlMethods.cs
- OptimizerPatterns.cs
- ContextMenuAutomationPeer.cs
- StreamHelper.cs
- Stacktrace.cs
- CapabilitiesState.cs
- ServiceBehaviorAttribute.cs
- DataBoundControlHelper.cs
- ColumnMapCopier.cs
- DbMetaDataCollectionNames.cs
- validationstate.cs
- SqlMethodAttribute.cs
- UnicodeEncoding.cs
- DeclarativeConditionsCollection.cs
- webeventbuffer.cs
- XmlKeywords.cs
- XmlElementAttributes.cs
- WorkflowItemPresenter.cs
- ProcessModuleCollection.cs
- SchemaNames.cs
- EastAsianLunisolarCalendar.cs
- SimpleBitVector32.cs
- MetadataArtifactLoaderCompositeResource.cs
- CompilerTypeWithParams.cs
- GregorianCalendarHelper.cs
- ElementInit.cs
- CodeGen.cs
- ScaleTransform.cs
- LogPolicy.cs
- HtmlToClrEventProxy.cs
- CodeTypeMemberCollection.cs
- SystemWebSectionGroup.cs
- Splitter.cs
- EntityClassGenerator.cs
- Membership.cs
- KeyToListMap.cs
- TrustManagerPromptUI.cs
- SiteMapNodeItem.cs
- MulticastOption.cs
- MachineKeyConverter.cs
- PlainXmlDeserializer.cs
- AttachmentCollection.cs
- MergeEnumerator.cs
- ConfigurationException.cs
- MailWebEventProvider.cs
- GridViewSortEventArgs.cs
- OleDbReferenceCollection.cs
- MulticastOption.cs
- HandlerWithFactory.cs
- ThreadSafeList.cs
- DynamicRendererThreadManager.cs
- SystemIPv4InterfaceProperties.cs