prs/PRS.Avalonia/PRS.Avalonia/Components/FormsEditor/Fields/DFSignaturePadEditorViewModel.cs

using CommunityToolkit.Mvvm.ComponentModel;
using InABox.Avalonia;
using PRS.Avalonia.Modules;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PRS.Avalonia.DigitalForms;

internal partial class DFSignaturePadEditorViewModel : ModuleViewModel
{
    public override string Title => "Edit Signature";

    [ObservableProperty]
    private string _signatureName = "";

    [ObservableProperty]
    private Func<string, Task<bool>>? _validateName;

    [ObservableProperty]
    private Action<string, byte[]?>? _signatureSaved;

    [ObservableProperty]
    private Func<byte[]?>? _getImage;

    public DFSignaturePadEditorViewModel()
    {
        PrimaryMenu.Add(new(Images.tick, Save));
    }

    private async Task<bool> Save()
    {
        if(ValidateName is not null)
        {
            if(!await ValidateName(SignatureName))
            {
                return true;
            }
        }
        Navigation.Back();
        var image = GetImage?.Invoke();
        SignatureSaved?.Invoke(SignatureName, image);
        return true;
    }
}