// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
//
// Description: Implementation of the GroupBox Control
//
 
using System.Windows.Input; // Access Key support
using MS.Internal.Telemetry.PresentationFramework;
 
namespace System.Windows.Controls
{
    /// <summary>
    /// GroupBox Control class
    /// </summary>
    [Localizability(LocalizationCategory.None, Readability = Readability.Unreadable)] // cannot be read & localized as string
    public class GroupBox : HeaderedContentControl
    {
        #region Constructors
        
        static GroupBox()
        {
            FocusableProperty.OverrideMetadata(typeof(GroupBox), new FrameworkPropertyMetadata(false));
            IsTabStopProperty.OverrideMetadata(typeof(GroupBox), new FrameworkPropertyMetadata(false));
            DefaultStyleKeyProperty.OverrideMetadata(typeof(GroupBox), new FrameworkPropertyMetadata(typeof(GroupBox)));
            EventManager.RegisterClassHandler(typeof(GroupBox), AccessKeyManager.AccessKeyPressedEvent, new AccessKeyPressedEventHandler(OnAccessKeyPressed));
 
            ControlsTraceLogger.AddControl(TelemetryControls.GroupBox);
        }
 
        #endregion
 
        #region Override methods
        
        /// <summary>
        /// Creates AutomationPeer (<see cref="UIElement.OnCreateAutomationPeer"/>)
        /// </summary>
        protected override System.Windows.Automation.Peers.AutomationPeer OnCreateAutomationPeer() 
        {
            return new System.Windows.Automation.Peers.GroupBoxAutomationPeer(this);
        }
 
        /// <summary>
        /// The Access key for this control was invoked.
        /// </summary>
        protected override void OnAccessKey(AccessKeyEventArgs e)
        {
            MoveFocus(new TraversalRequest(FocusNavigationDirection.First));
        }
 
        private static void OnAccessKeyPressed(object sender, AccessKeyPressedEventArgs e)
        {
            if (!e.Handled && e.Scope == null && e.Target == null)
            {
                e.Target = sender as GroupBox;
            }
        }
 
        #endregion
    }
}