using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Chernobyl.Collections.Generic;
using Chernobyl.Collections.Generic.Event;
using Chernobyl.Collections.Generic.Hierarchy;
using Chernobyl.Mathematics.Geometry;
using Chernobyl.Values;

namespace Chernobyl.Mathematics.Space
{
    /// <summary>
    /// An implementation of an <see cref="ICell"/> that has a rectangular shape.
    /// </summary>
    public class RectangleCell : Rectangle, ICell
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="RectangleCell"/> class.
        /// </summary>
        /// <param name="width">The horizontal width of the rectangle. This 
        /// value cannot be negative.</param>
        /// <param name="height">The vertical height of the rectangle. This 
        /// value cannot be negative.</param>
        /// <param name="parent">The immediate superior of this node in the 
        /// hierarchy or null if this node has no superior.</param>
        /// <param name="children">The immediate subordinates of this node in 
        /// the hierarchy.</param>
        public RectangleCell(float width, float height, ICell parent, IEnumerable<ICell> children)
        {
            Scale(width, height);

            Children = new DecoratingEventCollection<ICell>(new HierarchalChildren<ICell>(this));
            Parent = new HierarchalParent<ICell>(this);

            Parent.Value = parent;
            Children.AddRange(children);
        }

        /// <summary>
        /// The immediate superior of this node in the hierarchy or null if this
        /// node has no superior.
        /// </summary>
        public IDynamicContainer<ICell> Parent { get; private set; }

        /// <summary>
        /// The immediate subordinates of this node in the hierarchy.
        /// </summary>
        public IEventCollection<ICell> Children { get; private set; }
    }
}