// This file is part of the Noddybox.WindowsPhone 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.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.ComponentModel;

namespace Noddybox.WindowsPhone.Silverlight.ViewModels
{
    /// <summary>
    /// Provides a base for view models.
    /// </summary>
    public class BaseViewModel : INotifyPropertyChanged
    {
        #region SetValue

        /// <summary>
        /// Sets a value in the model.
        /// </summary>
        /// <typeparam name="T">The type of the value.</typeparam>
        /// <param name="member">A reference to the member variable.</param>
        /// <param name="value">The new value.</param>
        /// <param name="names">The propertys to change if the value has changed.</param>
        protected void SetValue<T>(ref T member, T value, params string[] names)
        {
            if (!value.Equals(member))
            {
                member = value;

                foreach (string name in names)
                {
                    NotifyPropertyChanged(name);
                }
            }
        }

        #endregion

        #region Notify

        /// <summary>
        /// Notifies handlers of a property change.
        /// </summary>
        /// <param name="propertyName">The property's name.</param>
        protected void NotifyPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }  
        
        #endregion

        #region INotifyPropertyChanged Members

        public event PropertyChangedEventHandler PropertyChanged;

        #endregion
    }
}