using System;
using System.Drawing;        // Color object

namespace Standard
{
    /// <summary>
    /// Persistent is a Singleton object used only by the Model.
    /// Persistent is the Model object's repository of persistent data.  No
    /// object except the Model should directly access this object.
    /// The Model object will serialize and deserialize Persistent as
    /// needed.  The contents of this object are stored in a SOAP-encoded
    /// XML settings file on disk.
    /// </summary>
    [Serializable()] public sealed class Persistent
    {

        static readonly Persistent instance=new Persistent();

        // explicit static constructor causes C# compiler
        // not to mark type as beforefieldinit, which means
        // use lazy instantiation (construct only if really used)
        static Persistent()
        {
        }

        private Persistent()
        {
        }

        public static Persistent GetInstance()
        {
            return instance;
        }


//----------------- persistent properties ------------------------



        private int myMainFormLeft = 100;
        /// <summary>
        /// MainFormLeft is the location of the left side of the main form
        /// </summary>
        public int MainFormLeft
        {
            get { return myMainFormLeft; }
            set    { myMainFormLeft = value; }
        }


        private int myMainFormTop = 100;
        /// <summary>
        /// MainFormTop is the location of the top edge of the main form
        /// </summary>
        public int MainFormTop
        {
            get { return myMainFormTop; }
            set { myMainFormTop = value; }
        }



        private int myMainFormWidth = 500;
        /// <summary>
        /// MainFormWidth is width of the main form
        /// </summary>
        public int MainFormWidth
        {
            get { return myMainFormWidth; }
            set { myMainFormWidth = value; }
        }


        private int myMainFormHeight = 400;
        /// <summary>
        /// MainFormHeight is height of the main form
        /// </summary>
        public int MainFormHeight
        {
            get { return myMainFormHeight; }
            set { myMainFormHeight = value; }
        }


        private bool myMainFormMaximized = false;
        /// <summary>
        /// MainFormMaximized is true is the main form should open maximized
        /// </summary>
        public bool MainFormMaximized
        {
            get { return myMainFormMaximized; }
            set { myMainFormMaximized = value; }
        }


        private Model.BgType myBackground = Model.BgType.Gradient;
        /// <summary>
        /// Background is assigned one of the values from the
        /// Model.BgType enumeration to designate whether the
        /// form Backgrounds will be solid, gradient or an image.
        /// </summary>
        public Model.BgType Background
        {
            get { return myBackground; }
            set { myBackground = value; }
        }


    } // end class
} // end namespace