Pf2eDataScrapper/Pf2eDataScrapper/WPF/EntityViewer/EntityViewStructure/StructureRow.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Data;
using System.Windows.Input;
using System.Windows.Media;
using FontAwesome.Sharp;

namespace Pf2eDataScrapper.WPF.EntityViewer.EntityViewStructure;

internal class StructureRow : INotifyPropertyChanged
{
    /// <summary>
    /// Отображаемая строка поля сущности.
    /// </summary>
    public StructureField Field { get; }

    /// <summary>
    /// Список типов лестницы.
    /// </summary>
    public List<LadderType> Ladder { get; set; } = [];

    /// <summary>
    /// Флаг наличия кнопки.
    /// </summary>
    public bool HasButton => Field.FieldType == StructureFieldType.Complex;

    /// <summary>
    /// Флаг, указывающий, отображается ли строка.
    /// </summary>
    public bool Visible => Field.Visible;

    /// <summary>
    /// Флаг, указывающий, отображается ли строка.
    /// </summary>
    public Visibility ItemVisibility => Visible ? Visibility.Visible : Visibility.Collapsed;

    /// <summary>
    /// Флаг, указывающий, отображается ли строка.
    /// </summary>
    public Visibility ButtonVisibility => HasButton ? Visibility.Visible : Visibility.Collapsed;

    /// <summary>
    /// Иконка кнопки.
    /// </summary>
    public string ButtonIcon => HasButton && !((StructureFieldComplex)Field).Collapsed ? IconChar.PlusSquare.ToChar() : IconChar.MinusSquare.ToChar();

    /// <summary>
    /// Глубина отображения поля.
    /// </summary>
    public int Depth => Field.Depth;

    /// <summary>
    /// Строковое представление названия поля.
    /// </summary>
    public string Name => Field.Name;

    /// <summary>
    /// Строковое представление типа поля.
    /// </summary>
    public string Type
    {
        get
        {
            string result = Field.GetTypeString();
            if (result != "")
            {
                result = $@"({result})";
            }
            return result;
        }
    }

    /// <summary>
    /// Строковое представление значения поля.
    /// </summary>
    public string Value => Field.GetValueString();

    /// <summary>
    /// Команда переключения.
    /// </summary>
    public ICommand CollapseCommand { get; }

    /// <summary>
    /// Кониструктор класса <see cref="StructureRow"/>.
    /// </summary>
    /// <param name="field">Поле.</param>
    public StructureRow(StructureField field)
    {
        Field = field; 
        CollapseCommand = new CollapseCommand(this);

        Field.PropertyChanged += Field_PropertyChanged;
    }

    /// <summary>
    /// 
    /// </summary>
    /// <param name="obj"></param>
    private void Field_PropertyChanged(object? sender, PropertyChangedEventArgs e)
    {
        OnPropertyChanged(nameof(Field));
        OnPropertyChanged(nameof(Visible));
        OnPropertyChanged(nameof(ItemVisibility));
        OnPropertyChanged(nameof(ButtonVisibility));
        OnPropertyChanged(nameof(ButtonIcon));
    }

    /// <summary>
    /// Событие изменения поля.
    /// </summary>
    public event Action<StructureRow, StructureField>? OnChange;

    /// <summary>
    /// Изменение поля.
    /// </summary>
    public event PropertyChangedEventHandler? PropertyChanged;

    /// <summary>
    /// При изменении поля.
    /// </summary>
    /// <param name="propertyName">Название поля.</param>
    protected virtual void OnPropertyChanged([CallerMemberName] string? propertyName = null)
    {
        PropertyChanged?.Invoke(this, new(propertyName));
    }
}

internal class CollapseCommand(StructureRow structureRow) : ICommand
{
    private StructureRow StructureRow { get; } = structureRow;

    public event EventHandler? CanExecuteChanged;

    public bool CanExecute(object? parameter)
    {
        return true;
    }

    public void Execute(object? parameter)
    {
        var field = (StructureFieldComplex)StructureRow.Field;
        field.Collapsed = !field.Collapsed;
    }
}