using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;

namespace Com.Piwigo.Wpf.DTO
{
    public sealed class PwgModelManager
    {
        static readonly PwgModelManagerBase _instance = new PwgModelManagerBase();

        // Explicit static constructor to tell C# compiler
        // not to mark type as beforefieldinit
        static PwgModelManager()
        {
        }

        public static PwgModelManagerBase Instance
        {
            get
            {
                return _instance;
            }
        }

        public class PwgModelManagerBase : INotifyPropertyChanged
        {
            private AsyncObservableCollection<String> _lstMsgInfo = new AsyncObservableCollection<String>();
            public AsyncObservableCollection<String> lstMsgInfo
            {
                set { _lstMsgInfo = value; OnPropertyChanged("lstMsgInfo"); }
                get { return _lstMsgInfo; }
            }

            private Boolean _booCmdRunning = false;
            public Boolean booCmdRunning
            {
                set { _booCmdRunning = value; OnPropertyChanged("booCmdRunning"); }
                get { return _booCmdRunning; }
            }

            private PwgImageListWPF _imageList;
            public PwgImageListWPF ImageList
            {
                set { _imageList = value; OnPropertyChanged("ImageList"); }
                get { return _imageList; }
            }

            private PwgSessionWPF _session;
            public PwgSessionWPF Session
            {
                set { _session = value; OnPropertyChanged("Session"); }
                get { return _session; }
            }

            private PwgCategoryListWPF _categoryList;
            public PwgCategoryListWPF CategoryList
            {
                set { _categoryList = value; OnPropertyChanged("CategoryList"); }
                get { return _categoryList; }
            }

            private PwgImageWPF _imageShown;
            public PwgImageWPF ImageShown
            {
                get { return _imageShown; }
                set { _imageShown = value; OnPropertyChanged("ImageShown"); }
            }
            
            public event PropertyChangedEventHandler PropertyChanged;
            internal void OnPropertyChanged(String info)
            {
                if (PropertyChanged != null)
                    PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }
    }
}