/*
 * GUIDialogScreen.cs
 * Authors:
 * Copyright (c) 2007-2008 Cornell University

 This program 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 2
 of the License, or (at your option) any later version.

 This program 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 this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Xna.Framework.Graphics;

namespace tAC_Engine.GUI
{
	/// <summary>
	/// Enum representing all the possible end states of the dialog screen
	/// </summary>
    public enum DialogOptions
    {
		/// <summary>
		/// Represents that the user has accepted the current dialog
		/// </summary>
        OK, 
		/// <summary>
		/// Represents that the user has canceled out of the current dialog
		/// </summary>
		CANCEL, 
		/// <summary>
		/// Represents that the user agrees with the current dialog
		/// </summary>
		YES, 
		/// <summary>
		/// Represents that the user disagrees with the current dialog
		/// </summary>
		NO
    }

	/// <summary>
	/// Defines how dialog works and is rendered within a game screen
	/// </summary>
    public class GUIDialogScreen : GUIScreen
    {
        #region Fields

        private string mMessage;

        private Texture2D mPixel;

        private DialogOptions mOptions;

        private List<GUIButton> mButtons;

        #endregion

        #region Properties

        #endregion

		#region Creation

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="message">Message that will be displayed in the dialog screen</param>
		/// <param name="options">List of options that the player can choose from</param>
        public GUIDialogScreen(string message, DialogOptions options) 
        { 
            mMessage = message;
            mOptions = options;

            mButtons = new List<GUIButton>();

            if ((options & DialogOptions.OK) == DialogOptions.OK)
            {
                GUIButton okButton = new GUIButton();
                okButton.Text = "OK";
                mButtons.Add(okButton);
                Add(okButton);
            }
		}

		#endregion

		#region Management

		/// <summary>
		/// Loads all needed information for content dependent variables.
		/// </summary>
        protected override void LoadContent()
        {
            mPixel = new Texture2D(GraphicsDevice, 1, 1, 1, TextureUsage.None, SurfaceFormat.Color);
            Color[] pixels = new Color[1];
            pixels[0] = Color.White;
            mPixel.SetData(pixels);

            base.LoadContent();
		}

		#endregion

		#region Modifiers

		/// <summary>
		/// Resizes the tip panel that the dialog resides in.
		/// Currently not implemented
		/// </summary>
        protected override void ResizeTipPanel()
        {
            throw new NotImplementedException();
		}

		#endregion
	}
}