using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Automation.Peers;
using System.Windows.Automation.Provider;

namespace SWASilverlightApp
{
    public partial class BoxAndButton : UserControl, IInvokeProvider, IValueProvider
    {
        public BoxAndButton()
        {
            InitializeComponent();
        }

        protected override AutomationPeer OnCreateAutomationPeer()
        {
            return new BoxAndButtonAutomationPeer(this);
        }

        private void SubmitButton_Click(object sender, RoutedEventArgs e)
        {
            char[] chars = TextEntryBox.Text.ToCharArray();
            Array.Reverse(chars);
            TextEntryBox.Text = new string(chars);
        }

        #region IInvokeProvider Members

        void IInvokeProvider.Invoke()
        {
            AutomationPeer peer = FrameworkElementAutomationPeer.CreatePeerForElement(SubmitButton);
            IInvokeProvider invokeProvider = (IInvokeProvider)peer.GetPattern(PatternInterface.Invoke);
            invokeProvider.Invoke();
        }

        #endregion

        #region IValueProvider Members

        bool IValueProvider.IsReadOnly
        {
            get { return TextEntryBox.IsReadOnly; }
        }

        void IValueProvider.SetValue(string value)
        {
            TextEntryBox.Text = value;
        }

        string IValueProvider.Value
        {
            get { return TextEntryBox.Text; }
        }

        #endregion


    }

    public class BoxAndButtonAutomationPeer : FrameworkElementAutomationPeer
    {
        public BoxAndButtonAutomationPeer(BoxAndButton owner) : base(owner) { }

        public override object GetPattern(PatternInterface patternInterface)
        {
            switch(patternInterface)
            {
                case PatternInterface.Value:
                    return Owner;

                case PatternInterface.Invoke:
                    return Owner;
            }

            return base.GetPattern(patternInterface);
        }

        //Commented out because its current form makes UISpy go crazy.
        //protected override List<AutomationPeer> GetChildrenCore()
        //{
        //    return new List<AutomationPeer>();
        //}
    }
}