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// This file is part of the Noddybox.Emulation C# suite.
//
// Noddybox.Emulation is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Noddybox.Emulation is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Noddybox.Emulation.  If not, see <http://www.gnu.org/licenses/>.
//
// Copyright (c) 2012 Ian Cowburn
//
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Noddybox.Emulation.Keyboard.Schema;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Input.Touch;

namespace Noddybox.Emulation.Xna.Input
{
    /// <summary>
    /// Provides a common source for getting to the inputs.
    /// </summary>
    public class InputManager
    {
        #region Event arguments

        /// <summary>
        /// Event data when the screen is touched.
        /// </summary>
        public class TouchLocationEventArgs : EventArgs
        {
            /// <summary>
            /// Whether the event has been consumed by one of the subscribers.
            /// </summary>
            public bool Handled {get; set;}
            /// <summary>
            /// The touch.
            /// </summary>
            public TouchLocation Location {get; set;}
        }

        #endregion

        #region Public members

        /// <summary>
        /// Reads the toch screen and passes the events on.
        /// </summary>
        public void Update()
        {
            MulticastDelegate d = TouchEvent as MulticastDelegate;

            if (d != null)
            {
                foreach (TouchLocation t in TouchPanel.GetState())
                {
                    TouchLocationEventArgs args = new TouchLocationEventArgs()
                    {
                        Location = t,
                        Handled = false
                    };

                    foreach (var f in d.GetInvocationList())
                    {
                        if (!args.Handled)
                        {
                            f.DynamicInvoke(this, args);
                        }
                    }
                }
            }
        }

        #endregion

        #region Events

        public EventHandler<TouchLocationEventArgs> TouchEvent;

        #endregion

        #region Constructors

        /// <summary>
        /// Constructor.
        /// </summary>
        public InputManager()
        {
        }

        #endregion
    }
}