test/CircleViewerMaui/MainPage.xaml.cs

using System.Reflection;
using CDPShared;
using Syncfusion.Maui.PdfViewer;

namespace CircleViewerMaui;

public partial class MainPage : ContentPage
{
    int count = 0;
    private CDPWorker _cdp;
    Timer _timer;
    Boolean _bConnected = false;

    public MainPage()
    {
        using (LogMethod.Log(MethodBase.GetCurrentMethod().ReflectedType.Name))
        {
            _cdp = new CDPWorker();
            InitializeComponent();
            _timer = new Timer(IsReady, null, 250, 250);

        }
    }

    void IsReady(object state)
    {
        if (_bConnected != _cdp.Ready)
        {
            _bConnected = _cdp.Ready;
            OnReady();
            _timer = null;
        }
    }

    void OnReady()
    {
//        Device.InvokeOnMainThreadAsync(() => { lblConnected.Text = "Connected"; });
    }

    public async Task<string> OpenCirFileAsync()
    {
        var fileTypes = new FilePickerFileType(new Dictionary<DevicePlatform, IEnumerable<string>>
        {
            { DevicePlatform.iOS, new[] { "public.cir" } },
            { DevicePlatform.Android, new[] { "application/cir" } },
            { DevicePlatform.WinUI, new[] { ".cir" } },
            { DevicePlatform.macOS, new[] { ".cir" } }
        });

        var options = new PickOptions
        {
            FileTypes = fileTypes,
            PickerTitle = "Open .cir File"
        };

        var result = await FilePicker.PickAsync(options);

        if (result != null)
        {
            return result.FullPath;
        }

        return null;
    }

    private async void onOpenClicked(object sender, EventArgs e)
    {
        var filePath = await OpenCirFileAsync();
        if (filePath != null)
        {
            ViewFileAsync(filePath);
        }
    }

    async void ViewFileAsync(string fileToLoad)
    {
        using (LogMethod.Log(MethodBase.GetCurrentMethod().ReflectedType.Name))
        {
            var result = await _cdp.Decrypt(fileToLoad);
            if (result.Status.Result.GetValueOrDefault(false))
            {
                byte[] buf = Convert.FromBase64String(result.DecryptedData);
                string ext = Path.GetExtension(result.FileName);
                PdfViewer.DocumentSource = new MemoryStream(buf);
            }
        }
    }
}