MLEM/MLEM/Formatting/Codes/LinkCode.cs

using System;
using System.Text.RegularExpressions;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using MLEM.Font;

namespace MLEM.Formatting.Codes {
    /// <inheritdoc />
    public class LinkCode : UnderlineCode {

        private readonly Func<Token, bool> isSelected;
        private readonly Func<Color, Color?> color;

        /// <inheritdoc />
        public LinkCode(Match match, Regex regex, float thickness, float yOffset, Func<Token, bool> isSelected, Func<Color, Color?> color) :
            base(match, regex, thickness, yOffset) {
            this.isSelected = isSelected;
            this.color = color;
        }

        /// <inheritdoc />
        public LinkCode(Match match, Regex regex, float thickness, float yOffset, Func<Token, bool> isSelected, Color? color = null) :
            this(match, regex, thickness, yOffset, isSelected, d => color) {}

        /// <summary>
        /// Returns true if this link formatting code is currently selected or hovered over, based on the selection function.
        /// </summary>
        /// <returns>True if this code is currently selected</returns>
        public virtual bool IsSelected() {
            foreach (var token in this.Tokens) {
                if (this.isSelected(token))
                    return true;
            }
            return false;
        }

        /// <inheritdoc />
        public override Color? GetColor(Color defaultPick) {
            return this.color.Invoke(defaultPick);
        }

        /// <inheritdoc />
        public override bool DrawCharacter(GameTime time, SpriteBatch batch, int codePoint, string character, Token token, int indexInToken, Vector2 stringPos, ref Vector2 charPosOffset, GenericFont font, ref Color color, ref Vector2 scale, ref float rotation, ref Vector2 origin, float depth, SpriteEffects effects, Vector2 stringSize, Vector2 charSize) {
            // since we inherit from UnderlineCode, we can just call base if selected
            return this.IsSelected() && base.DrawCharacter(time, batch, codePoint, character, token, indexInToken, stringPos, ref charPosOffset, font, ref color, ref scale, ref rotation, ref origin, depth, effects, stringPos, charSize);
        }

    }
}