ItemAutomationPeer.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / Automation / Peers / ItemAutomationPeer.cs / 1 / ItemAutomationPeer.cs
                        
                        
                            using System; 
using System.Collections;
using System.Collections.Generic;
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.Interop;
using System.Windows.Media;

using MS.Internal; 
using MS.Win32;
 
namespace System.Windows.Automation.Peers 
{
 
    ///
    public abstract class ItemAutomationPeer : AutomationPeer
    {
        /// 
        protected ItemAutomationPeer(object item, ItemsControlAutomationPeer itemsControlAutomationPeer): base()
        { 
            _item = item; 
            _itemsControlAutomationPeer = itemsControlAutomationPeer;
        } 

        internal UIElement GetWrapper()
        {
            UIElement wrapper = null; 
            ItemsControl owner = (ItemsControl)(_itemsControlAutomationPeer.Owner);
            if (owner != null) 
            { 
                if (((MS.Internal.Controls.IGeneratorHost)owner).IsItemItsOwnContainer(_item))
                    wrapper = _item as UIElement; 
                else
                    wrapper = owner.ItemContainerGenerator.ContainerFromItem(_item) as UIElement;
            }
            return wrapper; 
        }
 
        internal AutomationPeer GetWrapperPeer() 
        {
            AutomationPeer wrapperPeer = null; 
            UIElement wrapper = GetWrapper();
            if(wrapper != null)
            {
                wrapperPeer = UIElementAutomationPeer.CreatePeerForElement(wrapper); 
                if(wrapperPeer == null) //fall back to default peer if there is no specific one
                { 
                    if(wrapper is FrameworkElement) 
                        wrapperPeer = new FrameworkElementAutomationPeer((FrameworkElement)wrapper);
                    else 
                        wrapperPeer = new UIElementAutomationPeer(wrapper);
                }
            }
 
            return wrapperPeer;
        } 
 
        ///
        override protected string GetItemTypeCore() 
        {
            return string.Empty;
        }
 
        ///
        protected override List GetChildrenCore() 
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null) 
            {
                //We need to update children here since the
                wrapperPeer.UpdateSubtree();
                List children = wrapperPeer.GetChildren(); 
                return children;
            } 
            return null; 
        }
 
        ///
        protected override Rect GetBoundingRectangleCore()
        {
            AutomationPeer wrapperPeer = GetWrapperPeer(); 
            if(wrapperPeer != null)
                return wrapperPeer.GetBoundingRectangle(); 
            else 
                return new Rect();
        } 

        ///
        protected override bool IsOffscreenCore()
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null) 
                return wrapperPeer.IsOffscreen(); 
            else
                return true; 
        }

        ///
        protected override AutomationOrientation GetOrientationCore() 
        {
            AutomationPeer wrapperPeer = GetWrapperPeer(); 
            if(wrapperPeer != null) 
                return wrapperPeer.GetOrientation();
            else 
                return AutomationOrientation.None;
        }

        /// 
        protected override string GetItemStatusCore()
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer(); 
            if(wrapperPeer != null)
                return wrapperPeer.GetItemStatus(); 
            else
                return string.Empty;
        }
 
        ///
        protected override bool IsRequiredForFormCore() 
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null) 
                return wrapperPeer.IsRequiredForForm();
            else
                return false;
        } 

        /// 
        protected override bool IsKeyboardFocusableCore() 
        {
            AutomationPeer wrapperPeer = GetWrapperPeer(); 
            if(wrapperPeer != null)
                return wrapperPeer.IsKeyboardFocusable();
            else
                return false; 
        }
 
        /// 
        protected override bool HasKeyboardFocusCore()
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null)
                return wrapperPeer.HasKeyboardFocus();
            else 
                return false;
        } 
 
        ///
        protected override bool IsEnabledCore() 
        {
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null)
                return wrapperPeer.IsEnabled(); 
            else
                return false; 
        } 

        /// 
        protected override bool IsPasswordCore()
        {
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null) 
                return wrapperPeer.IsPassword();
            else 
                return false; 
        }
 
        ///
        protected override string GetAutomationIdCore()
        {
            AutomationPeer wrapperPeer = GetWrapperPeer(); 
            if(wrapperPeer != null)
                return wrapperPeer.GetAutomationId(); 
            else 
                return string.Empty;
        } 

        ///
        protected override string GetNameCore()
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer();
            string name = null; 
 
            if(wrapperPeer != null)
                name = wrapperPeer.GetName(); 

            if(name == null && _item is string)
                name = (string)_item;
 
            if(name == null)
                name = string.Empty; 
 
            return name;
        } 

        ///
        protected override bool IsContentElementCore()
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null) 
                return wrapperPeer.IsContentElement(); 
            else
                return true; 
        }

        ///
        protected override bool IsControlElementCore() 
        {
            AutomationPeer wrapperPeer = GetWrapperPeer(); 
            if(wrapperPeer != null) 
                return wrapperPeer.IsControlElement();
            else 
                return true;
        }

        /// 
        protected override AutomationPeer GetLabeledByCore()
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer(); 
            if(wrapperPeer != null)
                return wrapperPeer.GetLabeledBy(); 
            else
                return null;
        }
 
        ///
        protected override string GetHelpTextCore() 
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null) 
                return wrapperPeer.GetHelpText();
            else
                return string.Empty;
        } 

        /// 
        protected override string GetAcceleratorKeyCore() 
        {
            AutomationPeer wrapperPeer = GetWrapperPeer(); 
            if(wrapperPeer != null)
                return wrapperPeer.GetAcceleratorKey();
            else
                return string.Empty; 
        }
 
        /// 
        protected override string GetAccessKeyCore()
        { 
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null)
                return wrapperPeer.GetAccessKey();
            else 
                return string.Empty;
        } 
 
        ///
        protected override Point GetClickablePointCore() 
        {
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null)
                return wrapperPeer.GetClickablePoint(); 
            else
                return new Point(double.NaN, double.NaN); 
        } 

        /// 
        protected override void SetFocusCore()
        {
            AutomationPeer wrapperPeer = GetWrapperPeer();
            if(wrapperPeer != null) 
                wrapperPeer.SetFocus();
        } 
 
        ///
        public object Item 
        {
            get
            {
                return _item; 
            }
        } 
 
        ///
        public ItemsControlAutomationPeer ItemsControlAutomationPeer 
        {
            get
            {
                return _itemsControlAutomationPeer; 
            }
        } 
 
        private object _item;
        private ItemsControlAutomationPeer _itemsControlAutomationPeer; 

    }
}
 

 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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ItemAutomationPeer.cs source code in C# .NET

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