using System;
using System.Collections.Generic;
using System.Text;

using Com.Piwigo.Lib.DTO;
using System.ComponentModel;
using System.Collections.ObjectModel;

namespace Com.Piwigo.Wpf.DTO
{
    public abstract class PwgTreeCategoryWPF : INotifyPropertyChanged
    {
        public abstract Int32 Id
        {
            get;
            set;
        }

        private String _name;
        public String Name
        {
            set { _name = value; OnPropertyChanged("Name"); }
            get { return _name; }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged(String info)
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(info));
        }

        #region IsExpanded

        /// <summary>
        /// Gets/sets whether the TreeViewItem 
        /// associated with this object is expanded.
        /// </summary>
        private bool _isExpanded = false;
        public bool IsExpanded
        {
            get { return _isExpanded; }
            set
            {
                if (value != _isExpanded)
                {
                    _isExpanded = value;
                    this.OnPropertyChanged("IsExpanded");
                }

                // Expand all the way up to the root.
                if (_isExpanded && _parent != null)
                    _parent.IsExpanded = true;
            }
        }

        #endregion // IsExpanded

        #region IsSelected

        /// <summary>
        /// Gets/sets whether the TreeViewItem 
        /// associated with this object is selected.
        /// </summary>
        private bool _isSelected = false;
        public bool IsSelected
        {
            get { return _isSelected; }
            set
            {
                if (value != _isSelected)
                {
                    _isSelected = value;
                    this.OnPropertyChanged("IsSelected");
                }
            }
        }

        #endregion // IsSelected

        #region Parents - Childs
        private PwgCategoryWPF _parent = null;
        public abstract PwgCategoryWPF Parent
        {
            get;
            set;
        }

        private PwgCategoryListWPF _childrens = null;
        public PwgCategoryListWPF Childrens
        {
            get { return _childrens; }
            set { _childrens = value; this.OnPropertyChanged("Childrens"); }
        }

        #endregion // Parent
    }

    public class PwgRootCategoryWPF : PwgTreeCategoryWPF
    {
        private Int32 _id = Com.Piwigo.Lib.DTO.PwgCategory.RootCategoryId;
        public override Int32 Id
        {
            set { throw new SystemException("Couldn't not set the Id for Root category"); }
            get { return _id; }
        }
 
        private PwgCategoryWPF _parent = null;
        public override PwgCategoryWPF Parent
        {
            get { return _parent; }
            set { throw new SystemException("Couldn't not set Parent for Root category"); }
        }
    }

    public class PwgCategoryWPF : PwgTreeCategoryWPF
    {
        private Int32 _id;
        public override Int32 Id
        {
            set { _id = value; OnPropertyChanged("Id"); }
            get { return _id; }
        }

        private ObservableCollection<Int32> _upperCategoriesId;
        public  ObservableCollection<Int32> UpperCategoriesId
        {
            set { _upperCategoriesId = value; OnPropertyChanged("UpperCategoriesId"); }
            get { return _upperCategoriesId; }
        }

        private Uri _url;
        public Uri Url
        {
            set { _url = value; OnPropertyChanged("Url"); }
            get { return _url; }
        }

        private Int64 _imagesCount;
        public Int64 ImagesCount
        {
            set { _imagesCount = value; OnPropertyChanged("ImagesCount"); }
            get { return _imagesCount; }
        }

        private Int64 _deepImagesCount;
        public Int64 DeepImagesCount
        {
            set { _deepImagesCount = value; OnPropertyChanged("DeepImagesCount"); }
            get { return _deepImagesCount; }
        }

        private Int64 _subCategoriesCount;
        public Int64 SubCategoriesCount
        {
            set { _subCategoriesCount = value; OnPropertyChanged("SubCategoriesCount"); }
            get { return _subCategoriesCount; }
        }

        private DateTime _lastDate;
        public  DateTime LastDate
        {
            set { _lastDate = value; OnPropertyChanged("LastDate"); }
            get { return _lastDate; }
        }

        #region Presentation Members

        #region Parents - Childs
        private PwgCategoryWPF _parent = null;
        public override PwgCategoryWPF Parent
        {
            set { _parent = value; OnPropertyChanged("Parent"); }
            get { return _parent; }
        }
        #endregion // Parents - Childs
        #endregion // Presentation Members

        #region local category for import
        private Boolean _isLocal;
        public Boolean IsLocal
        {
            get { return _isLocal; }
            set { _isLocal = value; }
        }

        private String  _localFile;
        public String LocalFile
        {
            get { return _localFile; }
            set { _localFile = value; }
        }
        #endregion // local category for import
    }
}