﻿//******************************************************************************************************
//  UserAccounts.cs - Gbtc
//
//  Copyright © 2012, Grid Protection Alliance.  All Rights Reserved.
//
//  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See
//  the NOTICE file distributed with this work for additional information regarding copyright ownership.
//  The GPA licenses this file to you under the MIT License (MIT), the "License"; you may
//  not use this file except in compliance with the License. You may obtain a copy of the License at:
//
//      http://www.opensource.org/licenses/MIT
//
//  Unless agreed to in writing, the subject software distributed under the License is distributed on an
//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the
//  License for the specific language governing permissions and limitations.
//
//  Code Modification History:
//  ----------------------------------------------------------------------------------------------------
//  05/10/2011 - Mehulbhai P Thakkar
//       Generated original version of source code.
//  12/20/2012 - Starlynn Danyelle Gilliam
//       Modified Header.
//
//******************************************************************************************************

using System;
using GSF.TimeSeries.UI.DataModels;

namespace GSF.TimeSeries.UI.ViewModels
{
    /// <summary>
    /// Class to hold bindable <see cref="UserAccount"/> collection.
    /// </summary>
    internal class UserAccounts : PagedViewModelBase<UserAccount, Guid>
    {
        #region [ Properties ]

        /// <summary>
        /// Gets flag that determines if <see cref="PagedViewModelBase{T1, T2}.CurrentItem"/> is a new record.
        /// </summary>
        public override bool IsNewRecord
        {
            get
            {
                return (CurrentItem.ID == null || CurrentItem.ID == Guid.Empty);
            }
        }

        #endregion

        #region [ Constructor ]

        /// <summary>
        /// Creates an instance of <see cref="UserAccounts"/> class.
        /// </summary>
        /// <param name="itemsPerPage">Integer value to determine number of items per page.</param>
        /// <param name="autoSave">Boolean value to determine is user changes should be saved automatically.</param>
        public UserAccounts(int itemsPerPage, bool autoSave = true)
            : base(itemsPerPage, autoSave)
        {
        }

        #endregion

        #region [ Methods ]

        /// <summary>
        /// Gets the primary key value of the <see cref="PagedViewModelBase{T1, T2}.CurrentItem"/>.
        /// </summary>
        /// <returns>The primary key value of the <see cref="PagedViewModelBase{T1, T2}.CurrentItem"/>.</returns>
        public override Guid GetCurrentItemKey()
        {
            return CurrentItem.ID;
        }

        /// <summary>
        /// Gets the string based named identifier of the <see cref="PagedViewModelBase{T1, T2}.CurrentItem"/>.
        /// </summary>
        /// <returns>The string based named identifier of the <see cref="PagedViewModelBase{T1, T2}.CurrentItem"/>.</returns>
        public override string GetCurrentItemName()
        {
            return CurrentItem.Name;
        }

        /// <summary>
        /// Creates a new instance of <see cref="UserAccount"/> and assigns it to CurrentItem.
        /// </summary>
        public override void Clear()
        {
            base.Clear();
            CurrentItem = ItemsSource[0];
        }

        #endregion
    }
}
