using System.Collections;
using Avalonia.Controls;
using Avalonia.Interactivity;

namespace Semi.Avalonia.Demo.Pages;

public partial class CarouselPageDemo : UserControl
{
    public CarouselPageDemo()
    {
        InitializeComponent();
    }

    private void OnPrevious(object? sender, RoutedEventArgs e)
    {
        if (DemoCarousel.SelectedIndex > 0)
            DemoCarousel.SelectedIndex--;
    }

    private void OnNext(object? sender, RoutedEventArgs e)
    {
        var pageCount = (DemoCarousel.Pages as IList)?.Count ?? 0;
        if (DemoCarousel.SelectedIndex < pageCount - 1)
            DemoCarousel.SelectedIndex++;
    }

    private void OnSelectionChanged(object? sender, PageSelectionChangedEventArgs e)
    {
        if (StatusText == null)
            return;
        var pageCount = (DemoCarousel.Pages as IList)?.Count ?? 0;
        StatusText.Text = $"Page {DemoCarousel.SelectedIndex + 1} of {pageCount}";
    }
}