using System.Collections.Specialized;
using System.ComponentModel;
using System.Numerics;
using System.Runtime.CompilerServices;

namespace Dashboard.Layout
{
    public class LayoutInfo : INotifyPropertyChanged
    {
        /// <summary>
        /// Changes the control display.
        /// </summary>
        public DisplayMode DisplayMode
        {
            get;
            set => SetField(ref field, value);
        } = DisplayMode.Fit;

        /// <summary>
        /// Changes how overflows are handled.
        /// </summary>
        public OverflowMode OverflowMode
        {
            get;
            set => SetField(ref field, value);
        } = OverflowMode.Hidden;

        public Vector2 Size
        {
            get;
            set => SetField(ref field, value);
        }

        public Vector2 MaximumSize
        {
            get;
            set => SetField(ref field, value);
        }
        
        public Vector2 MinimumSize
        {
            get;
            set => SetField(ref field, value);
        }

        public Extents Margin 
        {
            get;
            set => SetField(ref field, value);
        }

        public Box2d ComputedBox
        { 
            get;
            set => SetField(ref field, value);
        }

        public event PropertyChangedEventHandler? PropertyChanged;

        protected virtual void OnPropertyChanged([CallerMemberName] string? propertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        protected bool SetField<T>(ref T field, T value, [CallerMemberName] string? propertyName = null)
        {
            if (EqualityComparer<T>.Default.Equals(field, value)) return false;
            field = value;
            OnPropertyChanged(propertyName);
            return true;
        }
    }
}