Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Core / CSharp / MS / Internal / Automation / ExpandCollapseProviderWrapper.cs / 1 / ExpandCollapseProviderWrapper.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Expand Collapse 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 ExpandCollapseProviderWrapper: MarshalByRefObject, IExpandCollapseProvider { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors private ExpandCollapseProviderWrapper( AutomationPeer peer, IExpandCollapseProvider iface ) { _peer = peer; _iface = iface; } #endregion Constructors //------------------------------------------------------ // // Interface IExpandCollapseProvider // //----------------------------------------------------- #region Interface IExpandCollapseProvider public void Expand() { ElementUtil.Invoke( _peer, new DispatcherOperationCallback( Expand ), null ); } public void Collapse() { ElementUtil.Invoke( _peer, new DispatcherOperationCallback( Collapse ), null ); } public ExpandCollapseState ExpandCollapseState { get { return (ExpandCollapseState) ElementUtil.Invoke( _peer, new DispatcherOperationCallback( GetExpandCollapseState ), null ); } } #endregion Interface IExpandCollapseProvider //------------------------------------------------------ // // Internal Methods // //------------------------------------------------------ #region Internal Methods internal static object Wrap( AutomationPeer peer, object iface ) { return new ExpandCollapseProviderWrapper( peer, (IExpandCollapseProvider) iface ); } #endregion Internal Methods //----------------------------------------------------- // // Private Methods // //------------------------------------------------------ #region Private Methods private object Expand( object unused ) { _iface.Expand(); return null; } private object Collapse( object unused ) { _iface.Collapse(); return null; } private object GetExpandCollapseState( object unused ) { return _iface.ExpandCollapseState; } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //----------------------------------------------------- #region Private Fields private AutomationPeer _peer; private IExpandCollapseProvider _iface; #endregion Private Fields } } // 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: Expand Collapse 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 ExpandCollapseProviderWrapper: MarshalByRefObject, IExpandCollapseProvider { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors private ExpandCollapseProviderWrapper( AutomationPeer peer, IExpandCollapseProvider iface ) { _peer = peer; _iface = iface; } #endregion Constructors //------------------------------------------------------ // // Interface IExpandCollapseProvider // //----------------------------------------------------- #region Interface IExpandCollapseProvider public void Expand() { ElementUtil.Invoke( _peer, new DispatcherOperationCallback( Expand ), null ); } public void Collapse() { ElementUtil.Invoke( _peer, new DispatcherOperationCallback( Collapse ), null ); } public ExpandCollapseState ExpandCollapseState { get { return (ExpandCollapseState) ElementUtil.Invoke( _peer, new DispatcherOperationCallback( GetExpandCollapseState ), null ); } } #endregion Interface IExpandCollapseProvider //------------------------------------------------------ // // Internal Methods // //------------------------------------------------------ #region Internal Methods internal static object Wrap( AutomationPeer peer, object iface ) { return new ExpandCollapseProviderWrapper( peer, (IExpandCollapseProvider) iface ); } #endregion Internal Methods //----------------------------------------------------- // // Private Methods // //------------------------------------------------------ #region Private Methods private object Expand( object unused ) { _iface.Expand(); return null; } private object Collapse( object unused ) { _iface.Collapse(); return null; } private object GetExpandCollapseState( object unused ) { return _iface.ExpandCollapseState; } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //----------------------------------------------------- #region Private Fields private AutomationPeer _peer; private IExpandCollapseProvider _iface; #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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