ItemContainerProviderWrapper.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / MS / Internal / Automation / ItemContainerProviderWrapper.cs / 1305600 / ItemContainerProviderWrapper.cs

                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// 
// Description: Item Container pattern provider wrapper for WPF 
//
// History: 
//  10/22/2008 : [....] - created
//
//---------------------------------------------------------------------------
 
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/WPF Wrapper class: Implements that UIAutomation I...Provider 
    // interface, and calls through to a WPF 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 ItemContainerProviderWrapper : MarshalByRefObject, IItemContainerProvider
    {
        //-----------------------------------------------------
        // 
        //  Constructors
        // 
        //----------------------------------------------------- 

        #region Constructors 

        private ItemContainerProviderWrapper(AutomationPeer peer, IItemContainerProvider iface)
        {
            _peer = peer; 
            _iface = iface;
        } 
 
        #endregion Constructors
 

        //------------------------------------------------------
        //
        //  Interface IItemContainerProvider 
        //
        //----------------------------------------------------- 
 
        #region Interface IItemContainerProvider
 
        public IRawElementProviderSimple FindItemByProperty(IRawElementProviderSimple startAfter, int propertyId, object value)
        {
            object [] args = new object[]{startAfter, propertyId, value};
            return (IRawElementProviderSimple)ElementUtil.Invoke(_peer, new DispatcherOperationCallback(FindItemByProperty), args); 
        }
 
        #endregion Interface IItemContainerProvider 

 
        //------------------------------------------------------
        //
        //  Internal Methods
        // 
        //------------------------------------------------------
 
        #region Internal Methods 

        internal static object Wrap(AutomationPeer peer, object iface) 
        {
            return new ItemContainerProviderWrapper(peer, (IItemContainerProvider)iface);
        }
 
        #endregion Internal Methods
 
        //----------------------------------------------------- 
        //
        //  Private Methods 
        //
        //------------------------------------------------------

        #region Private Methods 

        private object FindItemByProperty(object arg) 
        { 
            object[] args = (object[])arg;
            IRawElementProviderSimple startAfter = (IRawElementProviderSimple)args[0]; 
            int propertyId = (int)args[1];
            object value = (object)args[2];

            return _iface.FindItemByProperty(startAfter, propertyId, value); 
        }
 
        #endregion Private Methods 

 
        //-----------------------------------------------------
        //
        //  Private Fields
        // 
        //-----------------------------------------------------
 
        #region Private Fields 

        private AutomationPeer _peer; 
        private IItemContainerProvider _iface;

        #endregion Private Fields
    } 

} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

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