FrameworkElementAutomationPeer.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 / FrameworkElementAutomationPeer.cs / 1 / FrameworkElementAutomationPeer.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.Interop; 
using System.Windows.Media;
using System.Windows.Markup; 

using MS.Internal;
using MS.Win32;
 
namespace System.Windows.Automation.Peers
{ 
    /// 
    public class FrameworkElementAutomationPeer: UIElementAutomationPeer
    { 
        ///
        public FrameworkElementAutomationPeer(FrameworkElement owner): base(owner)
        {}
 
        ///
        protected override string GetAutomationIdCore() 
        { 
            //  1. fetch AutomationProperties.AutomationIdProperty
            string result = base.GetAutomationIdCore(); 

            if (string.IsNullOrEmpty(result))
            {
                //  2. fetch x:Uid 
                FrameworkElement owner = (FrameworkElement)Owner;
                result = DefinitionProperties.GetUid(owner); 
 
                if (string.IsNullOrEmpty(result))
                { 
                    //  3. fetch FrameworkElement.NameProperty
                    result = owner.Name;
                }
            } 

            return result ?? string.Empty; 
        } 

        /// 
        override protected string GetNameCore()
        {
            string result = base.GetNameCore();
            if (string.IsNullOrEmpty(result)) 
            {
                AutomationPeer labelAutomationPeer = GetLabeledByCore(); 
                if (labelAutomationPeer != null) 
                    result = labelAutomationPeer.GetName();
 
                if (string.IsNullOrEmpty(result))
                    result = ((FrameworkElement)Owner).GetPlainText();
            }
 
            return result ?? string.Empty;
        } 
 
        ///
        protected override string GetHelpTextCore() 
        {
            string result = base.GetHelpTextCore();
            if (string.IsNullOrEmpty(result))
            { 
                object toolTip = ((FrameworkElement)Owner).ToolTip;
                if (toolTip != null) 
                { 
                    result = toolTip as string;
                    if (string.IsNullOrEmpty(result)) 
                    {
                        FrameworkElement toolTipElement = toolTip as FrameworkElement;
                        if (toolTipElement != null)
                            result = toolTipElement.GetPlainText(); 
                    }
                } 
            } 
            return result ?? String.Empty;
        } 

        ///
        override protected AutomationPeer GetLabeledByCore()
        { 
            AutomationPeer labelPeer = base.GetLabeledByCore();
            if (labelPeer == null) 
            { 
                Label label = Label.GetLabeledBy(Owner);
                if (label != null) 
                    return label.GetAutomationPeer();
            }

            return null; 
        }
    } 
} 


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

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