/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

* 

* Description:

*

*/

using System;

using System.Xml;

using System.Text;

using System.IO;

using System.Drawing;

using System.ComponentModel;

using System.Collections.Generic;

using System.Diagnostics;

using System.Collections;

using System.Windows.Forms;

using Microsoft.Win32;

namespace SymbianUtils.Settings

{

    public class XmlSettingsValue

	{

		#region Constructors

        internal XmlSettingsValue( object aValue )

        {

            Value = aValue;

        }

        internal XmlSettingsValue( XmlReader aReader )

		{

            try

            {

                Read( aReader );

            }

            catch ( Exception )

            {

            }

		}

		#endregion

		#region Store & Restore API

		internal void Write( XmlWriter aWriter )

		{

            string typeString = Value.GetType().ToString();

            aWriter.WriteAttributeString( "type", typeString );

            //

            string valueString = Value.ToString();

            aWriter.WriteAttributeString( "value", valueString );

        }

        internal void Read( XmlReader aReader )

		{

            string typeString = XmlUtils.ReadAttributeValue( aReader, "type" );

            string valueString = XmlUtils.ReadAttributeValue( aReader, "value" );

            //

            Type type = Type.GetType( typeString );

            TypeConverter converter = TypeDescriptor.GetConverter( type );

            //

            bool canConvertFromString = converter.CanConvertFrom( valueString.GetType() );

            if ( canConvertFromString )

            {

                object value = converter.ConvertFromString( valueString );

                Value = value;

            }

            else

            {

                Value = valueString;

            }

        }

		#endregion

        #region Operators

        public static implicit operator XmlSettingsValue( int aValue )

        {

            XmlSettingsValue ret = new XmlSettingsValue( aValue );

            return ret;

        }

        public static implicit operator XmlSettingsValue( string aValue )

        {

            XmlSettingsValue ret = new XmlSettingsValue( aValue );

            return ret;

        }

        public static implicit operator XmlSettingsValue( bool aValue )

        {

            XmlSettingsValue ret = new XmlSettingsValue( aValue );

            return ret;

        }

        public static implicit operator XmlSettingsValue( uint aValue )

        {

            XmlSettingsValue ret = new XmlSettingsValue( aValue );

            return ret;

        }

        public static implicit operator XmlSettingsValue( long aValue )

        {

            XmlSettingsValue ret = new XmlSettingsValue( aValue );

            return ret;

        }

        public static implicit operator int( XmlSettingsValue aValue )

        {

            int ret = aValue.ToInt();

            return ret;

        }

        public static implicit operator string( XmlSettingsValue aValue )

        {

            string ret = aValue.ToString();

            return ret;

        }

        public static implicit operator bool( XmlSettingsValue aValue )

        {

            bool ret = aValue.ToBool();

            return ret;

        }

        public static implicit operator uint( XmlSettingsValue aValue )

        {

            uint ret = aValue.ToUint();

            return ret;

        }

        public static implicit operator long( XmlSettingsValue aValue )

        {

            long ret = aValue.ToLong();

            return ret;

        }

        public static implicit operator Size( XmlSettingsValue aValue )

        {

            Size ret = aValue.ToSize();

            return ret;

        }

        public static implicit operator Point( XmlSettingsValue aValue )

        {

            Point ret = aValue.ToPoint();

            return ret;

        }

        #endregion

        #region Conversion methods

        public int ToInt()

        {

            return ToInt( 0 );

        }

        public int ToInt( int aDefault )

        {

            int ret = XmlSettingsValueConverter<int>.Convert( this, aDefault );

            return ret;

        }

        public uint ToUint()

        {

            return ToUint( 0 );

        }

        public uint ToUint( uint aDefault )

        {

            uint ret = XmlSettingsValueConverter<uint>.Convert( this, aDefault );

            return ret;

        }

        public long ToLong()

        {

            return ToLong( 0 );

        }

        public long ToLong( long aDefault )

        {

            long ret = XmlSettingsValueConverter<long>.Convert( this, aDefault );

            return ret;

        }

        public bool ToBool()

        {

            return ToBool( false );

        }

        public bool ToBool( bool aDefault )

        {

            bool defaultApplied = false;

            bool ret = XmlSettingsValueConverter<bool>.Convert( this, aDefault, out defaultApplied );

            //

            if ( defaultApplied )

            {

                string valueAsString = ToString().ToLower().Trim();

                //

                switch ( valueAsString )

                {

                case "true":

                case "yes":

                case "1":

                    ret = true;

                    break;

                case "false":

                case "no":

                case "0":

                    ret = false;

                    break;

                default:

                    ret = aDefault;

                    break;

                }

            }

            //

            return ret;

        }

        public string ToString( string aDefault )

        {

            string ret = XmlSettingsValueConverter<string>.Convert( this, aDefault );

            return ret;

        }

        public Point ToPoint()

        {

            return ToPoint( new Point( 0, 0 ) );

        }

        public Point ToPoint( Point aDefault )

        {

            Point ret = XmlSettingsValueConverter<Point>.Convert( this, aDefault );

            return ret;

        }

        public Size ToSize()

        {

            return ToSize( new Size( 0, 0 ) );

        }

        public Size ToSize( Size aDefault )

        {

            Size ret = XmlSettingsValueConverter<Size>.Convert( this, aDefault );

            return ret;

        }

        #endregion

		#region Properties

		internal object Value

		{

			get { return iValue; }

			set

            {

                if ( value == null )

                {

                    throw new Exception( "Value cannot be NULL" );

                }

                else if ( value.GetType() == typeof( XmlSettingsValue ) )

                {

                    SymbianUtils.SymDebug.SymDebugger.Break();

                }

                iValue = value;

            }

		}

		#endregion

		#region From System.Object

        public override string ToString()

        {

            return Value.ToString();

        }

		#endregion

		#region Internal methods

		#endregion

		#region Data members

        private object iValue = string.Empty;

		#endregion

	}

}