using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Microsoft.PlayerFramework.Samples.Common;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace Microsoft.PlayerFramework.Samples
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class WebVTTPage : Page
    {
        private NavigationHelper navigationHelper;

        /// <summary>
        /// NavigationHelper is used on each page to aid in navigation and 
        /// process lifetime management
        /// </summary>
        public NavigationHelper NavigationHelper
        {
            get { return this.navigationHelper; }
        }
        public WebVTTPage()
        {
            this.InitializeComponent();
            this.navigationHelper = new NavigationHelper(this);

            player.SelectedCaption = player.AvailableCaptions.FirstOrDefault();
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            base.OnNavigatedTo(e);
            backButton.Command = this.navigationHelper.GoBackCommand;
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            player.Dispose();
            base.OnNavigatedFrom(e);
        }
    }
}
