DocumentViewerAutomationPeer.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / Automation / Peers / DocumentViewerAutomationPeer.cs / 1 / DocumentViewerAutomationPeer.cs
                        

                        
                            using System; 
using System.Runtime.InteropServices;
using System.Security;
using System.Text;
using System.Windows; 
using System.Windows.Automation.Provider;
using System.Windows.Controls; 
using System.Windows.Controls.Primitives; 
using System.Windows.Documents;
using System.Windows.Interop; 
using System.Windows.Media;

using MS.Internal;
using MS.Win32; 

namespace System.Windows.Automation.Peers 
{ 

    ///  
    /// AutomationPeer associated with DocumentViewer
    /// 
    public class DocumentViewerAutomationPeer : DocumentViewerBaseAutomationPeer
    { 
        /// 
        /// Constructor 
        ///  
        /// Owner of the AutomationPeer.
        public DocumentViewerAutomationPeer(DocumentViewer owner) 
            : base(owner)
        { }

        ///  
        /// 
        ///  
        override protected string GetClassNameCore() 
        {
            return "DocumentViewer"; 
        }

        /// 
        ///  
        /// 
        override public object GetPattern(PatternInterface patternInterface) 
        { 
            object returnValue = null;
 
            // Check if provided patternInterface is for Scroll, which is all
            // that is currently exposed.
            if (patternInterface == PatternInterface.Scroll)
            { 
                // Get a reference to DocumentViewer's ScrollViewer
                DocumentViewer owner = (DocumentViewer)Owner; 
                if (owner.ScrollViewer != null) 
                {
                    // Get a reference to ScrollViewer's AutomationPeer. 
                    AutomationPeer scrollPeer = UIElementAutomationPeer.CreatePeerForElement(owner.ScrollViewer);
                    if (scrollPeer != null && scrollPeer is IScrollProvider)
                    {
                        scrollPeer.EventsSource = this; 
                        returnValue = scrollPeer;
                    } 
                } 
            }
            else 
            {
                returnValue = base.GetPattern(patternInterface);
            }
 
            return returnValue;
        } 
    } 
}
 

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

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