Pilz/Pilz.UI.AvaloniaUI/Dialogs/AvaloniaFlyoutBase.axaml.cs

using System;
using System.ComponentModel;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Media;

namespace Pilz.UI.AvaloniaUI.Dialogs;

public partial class AvaloniaFlyoutBase : UserControl
{
    protected readonly BackgroundWorker bgWorker_LoadData = new();

    public delegate void OnCloseEventHandler(object? sender, EventArgs e);

    public event OnCloseEventHandler? OnClose;

    public static IImage? CancelImage { get; set; } = null;
    public static IImage? ConfirmImage { get; set; } = null;
    
    public static readonly StyledProperty<object?> MainContentProperty = AvaloniaProperty.Register<AvaloniaFlyoutBase, object?>(nameof(MainContent));
    public static readonly StyledProperty<object?> FooterContentProperty = AvaloniaProperty.Register<AvaloniaFlyoutBase, object?>(nameof(FooterContent));
    
    [Browsable(false)]
    public object? Result { get; protected set; }

    [DefaultValue(true)]
    public bool RegisterDialogAccept { get; set; } = true;

    [DefaultValue(true)]
    public bool RegisterDialogCancel { get; set; } = true;
    
    protected AvaloniaFlyoutBase()
    {
        InitializeComponent();

        CancelButtonImage = CancelImage;
        ConfirmButtonImage = ConfirmImage;
        
        bgWorker_LoadData.DoWork += BgWorker_LoadData_DoWork;
        bgWorker_LoadData.RunWorkerCompleted += BgWorker_LoadData_RunWorkerCompleted;
    }
    
    public object? MainContent
    {
        get => GetValue(MainContentProperty);
        set => SetValue(MainContentProperty, value);
    }
    
    public object? FooterContent
    {
        get => GetValue(FooterContentProperty);
        set => SetValue(FooterContentProperty, value);
    }

    [DefaultValue(true)]
    public virtual bool ActionPanelVisible
    {
        get => StackPanelFooter.IsVisible;
        set => StackPanelFooter.IsVisible = value;
    }

    [DefaultValue(true)]
    public virtual bool CancelButtonVisible
    {
        get => ButtonCancel.IsVisible;
        set => ButtonCancel.IsVisible = value;
    }

    [DefaultValue(true)]
    public virtual bool ConfirmButtonVisible
    {
        get => ButtonOkay.IsVisible;
        set => ButtonOkay.IsVisible = value;
    }

    [DefaultValue(true)]
    public virtual bool CancelButtonEnable
    {
        get => ButtonCancel.IsEnabled;
        set => ButtonCancel.IsEnabled = value;
    }

    [DefaultValue(true)]
    public virtual bool ConfirmButtonEnable
    {
        get => ButtonOkay.IsEnabled;
        set => ButtonOkay.IsEnabled = value;
    }

    [DefaultValue(null)]
    public virtual IImage? CancelButtonImage
    {
        get => ButtonCancel.ImageSource;
        set => ButtonCancel.ImageSource = value;
    }

    [DefaultValue(null)]
    public virtual IImage? ConfirmButtonImage
    {
        get => ButtonOkay.ImageSource;
        set => ButtonOkay.ImageSource = value;
    }

    [Localizable(true)]
    [DefaultValue("Okay")]
    public virtual string? ConfirmButtonText
    {
        get => ButtonOkay.Text;
        set => ButtonOkay.Text = value;
    }

    [Localizable(true)]
    [DefaultValue("Cancel")]
    public virtual string? CancelButtonText
    {
        get => ButtonCancel.Text;
        set => ButtonCancel.Text = value;
    }

    [Localizable(true)]
    [DefaultValue("")]
    public virtual string? Title
    {
        get => LabelTitle.Text;
        set
        {
            LabelTitle.Text = value;
            SetShowTitlePanel();
        }
    }

    [DefaultValue(null)]
    public virtual IImage? TitleIcon
    {
        get => ImageTitle.Source;
        set
        {
            ImageTitle.Source = value;
            SetShowTitlePanel();
        }
    }

    protected virtual void BgWorker_LoadData_DoWork(object? sender, DoWorkEventArgs e)
    {
        OnLoadData(e);
    }

    protected virtual void BgWorker_LoadData_RunWorkerCompleted(object? sender, RunWorkerCompletedEventArgs e)
    {
        OnLoadDataCompleted(e);
    }

    protected virtual void LoadData()
    {
        bgWorker_LoadData.RunWorkerAsync();
    }

    protected virtual void LoadData(object? argument)
    {
        bgWorker_LoadData.RunWorkerAsync(argument);
    }

    protected virtual void OnLoadData(DoWorkEventArgs e)
    {
    }

    protected virtual void OnLoadDataCompleted(RunWorkerCompletedEventArgs e)
    {
    }

    protected void Close()
    {
        OnClose?.Invoke(this, EventArgs.Empty);
    }

    protected void Close(object? result)
    {
        Result = result;
        Close();
    }

    protected virtual bool ValidateOK()
    {
        return true;
    }

    protected virtual void SetShowTitlePanel()
    {
        StackPanelHeader.IsVisible = !string.IsNullOrWhiteSpace(Title) || TitleIcon != null;
    }

    protected virtual void ButtonOkay_OnClick(object? sender, RoutedEventArgs e)
    {
        if (ValidateOK())
            Close(true);
    }

    protected virtual void ButtonCancel_OnClick(object? sender, RoutedEventArgs e)
    {
        Close(null);
    }
}