DocumentPageViewAutomationPeer.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 / DocumentPageViewAutomationPeer.cs / 1 / DocumentPageViewAutomationPeer.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (C) Microsoft Corporation.  All rights reserved.
//
// File: DocumentPageViewAutomationPeer.cs 
//
// Description: AutomationPeer associated with DocumentPageView. 
// 
//---------------------------------------------------------------------------
 
using System.Collections.Generic;           // List
using System.Globalization;                 // CultureInfo
using System.Windows.Controls;              // DocumentViewer
using System.Windows.Controls.Primitives;   // DocumentPageView 

namespace System.Windows.Automation.Peers 
{ 
    /// 
    /// AutomationPeer associated with DocumentPageView. 
    /// 
    public class DocumentPageViewAutomationPeer : FrameworkElementAutomationPeer
    {
        ///  
        /// Constructor.
        ///  
        /// Owner of the AutomationPeer. 
        public DocumentPageViewAutomationPeer(DocumentPageView owner)
            : base(owner) 
        {}

        /// 
        ///  
        /// 
        ///  
        /// AutomationPeer associated with DocumentPageView blocks any exposure 
        /// of the currently hosted page. So it returns empty collection of children.
        ///  
        protected override List GetChildrenCore()
        {
            return null;
        } 

        ///  
        ///  
        /// 
        /// A string representing the current DocumentPageView. 
        protected override string GetAutomationIdCore()
        {
            // Initialize the result to Empty, so that if Name is not set on the
            // DocumentPageView, and there is no valid PageNumber set, then the 
            // AutomationId will remain blank to avoid duplicate entries.
            string result = string.Empty; 
            DocumentPageView owner = (DocumentPageView)Owner; 

            // Check if a Name is already set on the DocumentPageView, otherwise attempt 
            // to construct one.
            if (!string.IsNullOrEmpty(owner.Name))
            {
                result = owner.Name; 
            }
            else if ((owner.PageNumber >= 0) && (owner.PageNumber < int.MaxValue)) 
            { 
                // This will set the AutomationId to a string that represents the current
                // page number, i.e. "DocumentPage1" will represent the first page.  These numbers 
                // will be kept in a 1-indexed format.  InvariantCulture is used to ensure
                // that these AutomationIds will not change with the language, so that they
                // can be trusted to always work in automation.
                result = String.Format(CultureInfo.InvariantCulture, "DocumentPage{0}", owner.PageNumber + 1); 
            }
 
            return result; 
        }
    } 
}


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

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