﻿/* ------------------------------------------------------------------------- */
//
// Copyright (c) 2010 CubeSoft, Inc.
//
// Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
/* ------------------------------------------------------------------------- */
using System.Linq;
using System.Windows.Forms;
using Cube.Mixin.String;

namespace Cube.Forms.Behaviors
{
    /* --------------------------------------------------------------------- */
    ///
    /// OpenFileBehavior
    ///
    /// <summary>
    /// Provides functionality to show a open-file dialog.
    /// </summary>
    ///
    /* --------------------------------------------------------------------- */
    public class OpenFileBehavior : MessageBehavior<OpenFileMessage>
    {
        /* ----------------------------------------------------------------- */
        ///
        /// OpenFileBehavior
        ///
        /// <summary>
        /// Initializes a new instance of the OpenFileBehavior class
        /// with the specified presentable object.
        /// </summary>
        ///
        /// <param name="aggregator">Aggregator object.</param>
        ///
        /* ----------------------------------------------------------------- */
        public OpenFileBehavior(IAggregator aggregator) : base(aggregator, e =>
        {
            var view = new OpenFileDialog
            {
                CheckPathExists = e.CheckPathExists,
                Multiselect     = e.Multiselect,
                Filter          = e.GetFilterText(),
                FilterIndex     = e.GetFilterIndex(),
            };

            if (e.Text.HasValue()) view.Title = e.Text;
            if (e.Value.Any()) view.FileName = e.Value.First();
            if (e.InitialDirectory.HasValue()) view.InitialDirectory = e.InitialDirectory;

            e.Cancel = view.ShowDialog() != DialogResult.OK;
            if (!e.Cancel) e.Value = view.FileNames;
        }) { }
    }
}
