LetterKey.cs

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using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using TMPro;
 
namespace PixoVR.Login
{
 
    public class LetterKey : MonoBehaviour
    {
        public TextMeshProUGUI label;
        public TextMeshProUGUI shiftedLabel;
 
        public string character = "";
 
        public string shiftedChar = "";
        [SerializeField]
        Button btn;
        //  private bool _shifted = false;
        private bool started;
        [SerializeField]
        bool refresh;
#if UNITY_EDITOR
        private void OnValidate()
        {
            refresh = false;
            if (started)
                return;
            btn = transform.GetComponentInChildren<Button>();
            label = btn.transform.GetChild(0).gameObject.GetComponent<TextMeshProUGUI>();
            if (label)
                label.text = character;
            if (btn.transform.childCount > 1)
            {
                shiftedLabel = btn.transform.GetChild(1).gameObject.GetComponent<TextMeshProUGUI>();
                if (shiftedLabel)
                    shiftedLabel.text = shiftedChar;
            }
            else
            {
                shiftedLabel = null;
 
            }
        }
#endif
        private void Awake()
        {
            started = true;
            btn.onClick.AddListener(OnClick);
            KeyboardController.OnShifted += OnShifted;
        }
        private void OnDestroy()
        {
            KeyboardController.OnShifted -= OnShifted;
        }
        private void OnShifted(bool value)
        {
 
            label.gameObject.SetActive(!value);
            if (shiftedLabel)
                shiftedLabel.gameObject.SetActive(value);
        }
        public bool shifted
        {
            get { return KeyboardController.Shifted; }
        }
 
        public string GetCharacter()
        {
            return KeyboardController.Shifted ? shiftedChar : character;
        }
        public void OnClick()
        {
            KeyboardController.AddCharacter(GetCharacter());
        }
    }
}