Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / MS / Internal / Automation / InteropAutomationProvider.cs / 1 / InteropAutomationProvider.cs
using System; using System.Windows; using System.Windows.Automation.Peers; using System.Windows.Automation.Provider; using System.Security; using System.Security.Permissions; using MS.Internal.PresentationCore; namespace MS.Internal.Automation { [FriendAccessAllowed] // Built into Core, also used by Framework. internal class InteropAutomationProvider: IRawElementProviderFragmentRoot { #region Constructors internal InteropAutomationProvider(HostedWindowWrapper wrapper, AutomationPeer parent) { if (wrapper == null) { throw new ArgumentNullException("wrapper"); } if (parent == null) { throw new ArgumentNullException("parent"); } _wrapper = wrapper; _parent = parent; } #endregion Constructors #region IRawElementProviderSimple /// ProviderOptions IRawElementProviderSimple.ProviderOptions { get { return ProviderOptions.ServerSideProvider | ProviderOptions.OverrideProvider; } } /// object IRawElementProviderSimple.GetPatternProvider(int patternId) { return null; } /// object IRawElementProviderSimple.GetPropertyValue(int propertyId) { return null; } ////// Critical - Calls critical HostedWindowWrapper.Handle. /// TreatAsSafe - The reason is described in the following comment by BrendanM /// HostProviderFromHandle is a public method the APTCA assembly UIAutomationProvider.dll; /// ...\windows\AccessibleTech\longhorn\Automation\UIAutomationProvider\System\Windows\Automation\Provider\AutomationInteropProvider.cs /// This calls through to an internal P/Invoke layer... /// ...\windows\AccessibleTech\longhorn\Automation\UIAutomationProvider\MS\Internal\Automation\UiaCoreProviderApi.cs /// Which P/Invokes to unmanaged UIAutomationCore.dll's UiaHostProviderFromHwnd API, /// ...\windows\AccessibleTech\longhorn\Automation\UnmanagedCore\UIAutomationCoreAPI.cpp /// Which checks the HWND with IsWindow, and returns a new MiniHwndProxy instance: /// ...\windows\AccessibleTech\longhorn\Automation\UnmanagedCore\MiniHwndProxy.cpp /// /// MiniHwndProxy does implement the IRawElementProviderSimple interface, but all methods /// return NULL or empty values; it does not expose any values or functionality through this. /// This object is designed to be an opaque cookie to contain the HWND so that only UIACore /// itself can access it. UIACore accesses the HWND by QI'ing for a private GUID, and then /// casting the returnd value to MiniHwndProxy, and calling a nonvirtual method to access a /// _hwnd field. While managed PT code maybe able to do a QI, the only way it could extract /// the _hwnd field would be by using unmanaged code. /// IRawElementProviderSimple IRawElementProviderSimple.HostRawElementProvider { [SecurityCritical, SecurityTreatAsSafe] get { return AutomationInteropProvider.HostProviderFromHandle(_wrapper.Handle); } } #endregion IRawElementProviderSimple #region IRawElementProviderFragment ////// TreatAsSafe - The reason this method can be treated as safe is because it yeilds information /// about the parent provider which can even otherwise be obtained by using public APIs such /// as UIElement.OnCreateAutomationPeer and AutomationProvider.ProviderFromPeer. /// IRawElementProviderFragment IRawElementProviderFragment.Navigate(NavigateDirection direction) { if (direction == NavigateDirection.Parent) { return (IRawElementProviderFragment)_parent.ProviderFromPeer(_parent); } return null; } /// int [] IRawElementProviderFragment.GetRuntimeId() { return null; } /// Rect IRawElementProviderFragment.BoundingRectangle { get { return Rect.Empty; } } /// IRawElementProviderSimple [] IRawElementProviderFragment.GetEmbeddedFragmentRoots() { return null; } /// void IRawElementProviderFragment.SetFocus() { throw new NotSupportedException(); } /// IRawElementProviderFragmentRoot IRawElementProviderFragment.FragmentRoot { get { return null; } } #endregion IRawElementProviderFragment #region IRawElementProviderFragmentRoot /// IRawElementProviderFragment IRawElementProviderFragmentRoot.ElementProviderFromPoint( double x, double y ) { return null; } /// IRawElementProviderFragment IRawElementProviderFragmentRoot.GetFocus() { return null; } #endregion IRawElementProviderFragmentRoot #region Data private HostedWindowWrapper _wrapper; private AutomationPeer _parent; #endregion Data } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System; using System.Windows; using System.Windows.Automation.Peers; using System.Windows.Automation.Provider; using System.Security; using System.Security.Permissions; using MS.Internal.PresentationCore; namespace MS.Internal.Automation { [FriendAccessAllowed] // Built into Core, also used by Framework. internal class InteropAutomationProvider: IRawElementProviderFragmentRoot { #region Constructors internal InteropAutomationProvider(HostedWindowWrapper wrapper, AutomationPeer parent) { if (wrapper == null) { throw new ArgumentNullException("wrapper"); } if (parent == null) { throw new ArgumentNullException("parent"); } _wrapper = wrapper; _parent = parent; } #endregion Constructors #region IRawElementProviderSimple /// ProviderOptions IRawElementProviderSimple.ProviderOptions { get { return ProviderOptions.ServerSideProvider | ProviderOptions.OverrideProvider; } } /// object IRawElementProviderSimple.GetPatternProvider(int patternId) { return null; } /// object IRawElementProviderSimple.GetPropertyValue(int propertyId) { return null; } ////// Critical - Calls critical HostedWindowWrapper.Handle. /// TreatAsSafe - The reason is described in the following comment by BrendanM /// HostProviderFromHandle is a public method the APTCA assembly UIAutomationProvider.dll; /// ...\windows\AccessibleTech\longhorn\Automation\UIAutomationProvider\System\Windows\Automation\Provider\AutomationInteropProvider.cs /// This calls through to an internal P/Invoke layer... /// ...\windows\AccessibleTech\longhorn\Automation\UIAutomationProvider\MS\Internal\Automation\UiaCoreProviderApi.cs /// Which P/Invokes to unmanaged UIAutomationCore.dll's UiaHostProviderFromHwnd API, /// ...\windows\AccessibleTech\longhorn\Automation\UnmanagedCore\UIAutomationCoreAPI.cpp /// Which checks the HWND with IsWindow, and returns a new MiniHwndProxy instance: /// ...\windows\AccessibleTech\longhorn\Automation\UnmanagedCore\MiniHwndProxy.cpp /// /// MiniHwndProxy does implement the IRawElementProviderSimple interface, but all methods /// return NULL or empty values; it does not expose any values or functionality through this. /// This object is designed to be an opaque cookie to contain the HWND so that only UIACore /// itself can access it. UIACore accesses the HWND by QI'ing for a private GUID, and then /// casting the returnd value to MiniHwndProxy, and calling a nonvirtual method to access a /// _hwnd field. While managed PT code maybe able to do a QI, the only way it could extract /// the _hwnd field would be by using unmanaged code. /// IRawElementProviderSimple IRawElementProviderSimple.HostRawElementProvider { [SecurityCritical, SecurityTreatAsSafe] get { return AutomationInteropProvider.HostProviderFromHandle(_wrapper.Handle); } } #endregion IRawElementProviderSimple #region IRawElementProviderFragment ////// TreatAsSafe - The reason this method can be treated as safe is because it yeilds information /// about the parent provider which can even otherwise be obtained by using public APIs such /// as UIElement.OnCreateAutomationPeer and AutomationProvider.ProviderFromPeer. /// IRawElementProviderFragment IRawElementProviderFragment.Navigate(NavigateDirection direction) { if (direction == NavigateDirection.Parent) { return (IRawElementProviderFragment)_parent.ProviderFromPeer(_parent); } return null; } /// int [] IRawElementProviderFragment.GetRuntimeId() { return null; } /// Rect IRawElementProviderFragment.BoundingRectangle { get { return Rect.Empty; } } /// IRawElementProviderSimple [] IRawElementProviderFragment.GetEmbeddedFragmentRoots() { return null; } /// void IRawElementProviderFragment.SetFocus() { throw new NotSupportedException(); } /// IRawElementProviderFragmentRoot IRawElementProviderFragment.FragmentRoot { get { return null; } } #endregion IRawElementProviderFragment #region IRawElementProviderFragmentRoot /// IRawElementProviderFragment IRawElementProviderFragmentRoot.ElementProviderFromPoint( double x, double y ) { return null; } /// IRawElementProviderFragment IRawElementProviderFragmentRoot.GetFocus() { return null; } #endregion IRawElementProviderFragmentRoot #region Data private HostedWindowWrapper _wrapper; private AutomationPeer _parent; #endregion Data } } // 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
- MenuAutomationPeer.cs
- ErrorHandler.cs
- WebResourceUtil.cs
- Effect.cs
- StylusOverProperty.cs
- _HeaderInfoTable.cs
- MobileRedirect.cs
- AddInController.cs
- UrlMappingCollection.cs
- RuntimeConfigurationRecord.cs
- ToolStripMenuItem.cs
- IgnoreSection.cs
- SizeConverter.cs
- DataGridViewComboBoxEditingControl.cs
- DataGridCaption.cs
- ListViewInsertionMark.cs
- NullExtension.cs
- DataErrorValidationRule.cs
- InstanceData.cs
- DesignerAdapterAttribute.cs
- DefaultHttpHandler.cs
- BitmapFrameDecode.cs
- OleDbCommandBuilder.cs
- CSharpCodeProvider.cs
- Validator.cs
- PrintControllerWithStatusDialog.cs
- ReferenceService.cs
- Debug.cs
- SmiEventStream.cs
- TraceUtility.cs
- COM2IPerPropertyBrowsingHandler.cs
- FrugalMap.cs
- KeyedHashAlgorithm.cs
- RetrieveVirtualItemEventArgs.cs
- SplitterCancelEvent.cs
- ImageAttributes.cs
- WebPartMenu.cs
- MenuCommand.cs
- VariableAction.cs
- TabPage.cs
- ExtensionQuery.cs
- DataServiceQueryOfT.cs
- CommonProperties.cs
- TypeCollectionPropertyEditor.cs
- filewebresponse.cs
- XamlClipboardData.cs
- TextEncodedRawTextWriter.cs
- GroupBox.cs
- StatusBarItem.cs
- ListDictionary.cs
- SymDocumentType.cs
- PointIndependentAnimationStorage.cs
- NativeMethods.cs
- FastEncoder.cs
- SqlProviderUtilities.cs
- SimpleMailWebEventProvider.cs
- UniqueIdentifierService.cs
- ExtractorMetadata.cs
- StylusOverProperty.cs
- HostingEnvironmentException.cs
- BrowserCapabilitiesCompiler.cs
- WorkflowOperationBehavior.cs
- PolyQuadraticBezierSegment.cs
- SoapWriter.cs
- util.cs
- CodeExpressionRuleDeclaration.cs
- OdbcUtils.cs
- ResolveCriteria11.cs
- ResourcePermissionBase.cs
- DrawingImage.cs
- WindowsGraphicsCacheManager.cs
- TypeBuilder.cs
- IsolatedStorageException.cs
- SqlReorderer.cs
- ToolBarButton.cs
- BaseParser.cs
- DetailsViewPageEventArgs.cs
- ObjectDataSourceSelectingEventArgs.cs
- AccessViolationException.cs
- ReflectionUtil.cs
- TargetConverter.cs
- StringReader.cs
- PropertyTabAttribute.cs
- GenericsInstances.cs
- PixelShader.cs
- LicenseException.cs
- FrameworkContentElement.cs
- AssertSection.cs
- TransportSecurityProtocolFactory.cs
- CompilationUtil.cs
- RowCache.cs
- SystemIPGlobalStatistics.cs
- AdapterUtil.cs
- FixedFlowMap.cs
- ToolStripTemplateNode.cs
- CodeTypeOfExpression.cs
- AttributeConverter.cs
- MessageSecurityException.cs
- SerTrace.cs
- KnownBoxes.cs