OneNightDuel/ONDClient/GUI/TextBoxUIElement.cs

using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using MonoGameLibrary;
using MonoGameLibrary.Input;

namespace ONDClient.GUI;

public class TextBoxUIElement : TextUIElement {
    public bool Focused{ get; set; } = false;
    public Action OnFocused{ get; set; } = () => { };
    public Action OnUnfocused{ get; set; } = () => { };
    
    public TextBoxUIElement(SpriteFont font, Point corner1, Point corner2) : base(corner1, corner2, font) {
        Core.Instance.Window.TextInput += TextInputHandler;
        InputManager.AddListener(InputManager.MouseButton.LEFT, () => {
                if (!IsWithinBounds(InputManager.MouseState.Position)){
                    Focused = false;
                    OnUnfocused();
                }
            }, 
            InputTiming.PRESS, new InputListenerHook(true));
        Pressable = true;

        OnMousePress = () => {
            Focused = true;
            OnFocused();
        };
    }

    public void TextInputHandler(object sender, TextInputEventArgs e) {
        if (!Focused) return;
        if (e.Character == '\b') {
            if (Text.Length > 0) Text = Text[..^1];
            return;
        }

        if(Font.Characters.Contains(e.Character)) 
            Text += e.Character;
    } 
}