Matrixscan Batch Maui

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="MyApp.Views.MainPage"
             Title="Scan">
    <ContentPage.Content>
        <Grid />
    </ContentPage.Content>
</ContentPage>


namespace MyApp.Views;

public partial class MainPage : ContentPage
{
    public MainPage()
    {
        this.InitializeComponent();
    }
}


using Microsoft.Extensions.Logging;

namespace MyApp;

public static class MauiProgram
{
    public static MauiApp CreateMauiApp()
    {
        var builder = MauiApp.CreateBuilder();
        builder
            .UseMauiApp<App>()
            .ConfigureFonts(fonts =>
            {
                fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
            });

#if DEBUG
        builder.Logging.AddDebug();
#endif

        return builder.Build();
    }
}


<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:scandit="clr-namespace:Scandit.DataCapture.Core.UI.Maui;assembly=ScanditCaptureCoreMaui"
             xmlns:vm="clr-namespace:MyApp.ViewModels"
             x:Class="MyApp.Views.MainPage"
             Title="MatrixScan">
    <ContentPage.BindingContext>
        <vm:MainPageViewModel />
    </ContentPage.BindingContext>
    <ContentPage.Content>
        <AbsoluteLayout>
            <scandit:DataCaptureView x:Name="dataCaptureView"
                                     AbsoluteLayout.LayoutBounds="0,0,1,1"
                                     AbsoluteLayout.LayoutFlags="All"
                                     DataCaptureContext="{Binding DataCaptureContext}" />
        </AbsoluteLayout>
    </ContentPage.Content>
</ContentPage>


using MyApp.ViewModels;
using Scandit.DataCapture.Barcode.Batch.UI.Overlay;

namespace MyApp.Views;

public partial class MainPage : ContentPage
{
    private BarcodeBatchBasicOverlay overlay = null!;
    private readonly MainPageViewModel viewModel;

    public MainPage()
    {
        this.InitializeComponent();
        this.viewModel = (MainPageViewModel)this.BindingContext;

        // Initialization of the overlay happens on the handler-changed event so the
        // native platform view exists.
        this.dataCaptureView.HandlerChanged += this.OnDataCaptureViewHandlerChanged;
    }

    private void OnDataCaptureViewHandlerChanged(object? sender, EventArgs e)
    {
        this.overlay = BarcodeBatchBasicOverlay.Create(
            this.viewModel.BarcodeBatch,
            BarcodeBatchBasicOverlayStyle.Frame);
        this.dataCaptureView.AddOverlay(this.overlay);
    }

    protected override void OnAppearing()
    {
        base.OnAppearing();
        _ = this.viewModel.ResumeAsync();
    }

    protected override void OnDisappearing()
    {
        base.OnDisappearing();
        _ = this.viewModel.SleepAsync();
    }
}


using System.ComponentModel;
using Scandit.DataCapture.Barcode.Batch.Capture;
using Scandit.DataCapture.Barcode.Batch.Data;
using Scandit.DataCapture.Barcode.Data;
using Scandit.DataCapture.Core.Capture;
using Scandit.DataCapture.Core.Data;
using Scandit.DataCapture.Core.Source;

namespace MyApp.ViewModels;

public abstract class BaseViewModel : INotifyPropertyChanged
{
    public virtual Task ResumeAsync() => Task.CompletedTask;
    public virtual Task SleepAsync() => Task.CompletedTask;

    public event PropertyChangedEventHandler? PropertyChanged;
    protected void OnPropertyChanged(string name) =>
        this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
}

public record ScanResult(int Id, string Data, string Symbology);

public class MainPageViewModel : BaseViewModel, IBarcodeBatchListener
{
    public const string ScanditLicenseKey = "-- ENTER YOUR SCANDIT LICENSE KEY HERE --";

    private readonly HashSet<int> seenTrackingIds