UIVarToggle.cs

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using UnityEngine;
using UnityEngine.UI;
using HKI.Core.Loc;
using HKI.Core.Variables;

namespace HKI.Core.UI
{
    [AddComponentMenu("HKI/UI/UIVarToggle")]
    [RequireComponent(typeof(Toggle))]
    [DisallowMultipleComponent]
    public class UIVarToggle : MonoBehaviour
    {
        // Public variables
        [Header("General Properties")]
        [SerializeField] Boolean Variable = null;

        [SerializeField] bool SetVarOnValueChangedCallback = false;
        [SerializeField] bool SetVarOnDisable = false;

        [SerializeField] Language Language = null;
        [SerializeField] TextLocalization TrueTextLocalization = null;
        [SerializeField] TextLocalization FalseTextLocalization = null;
        
        [SerializeField] GameObject ValueTextGO = null;

        // Private variables
        TMProAndUGUITextAccessor valueText = null;

        Toggle toggle = null;

        // Awake function
        void Awake()
        {
            if(Variable == null)
            {
                Debug.LogError("(UIValueText)" + name + " there isn't a variable attached to this value text!");
                return;
            }

            toggle = GetComponent<Toggle>();

            toggle.onValueChanged.AddListener((value) => { OnValueChanged(); });

            valueText = new TMProAndUGUITextAccessor(ValueTextGO);
        }

        // OnEnable function
        void OnEnable()
        {
            if(Variable != null)
            {
                toggle.isOn = Variable.Value;

                ChangeText();

                if(Language != null)
                    Language.OnValueChanged += ChangeText;

                Variable.OnValueChanged += OnExternalChange;
            }
        }

        // OnDisable function
        void OnDisable()
        {
            if(Variable != null)
            {
                if(Language != null)
                    Language.OnValueChanged -= ChangeText;
                
                Variable.OnValueChanged -= OnExternalChange;

                if(SetVarOnDisable)
                    Variable.SetValue = toggle.isOn;
            }
        }

        // Interface function
        public void SetVarToToggleValue()
        {
            if(Variable != null)
                Variable.SetValue = toggle.isOn;
        }

        public void Reset()
        {
            if (Variable != null)
            {
                toggle.isOn = Variable.Value;

                ChangeText();
            }
        }

        // Helper function
        void OnValueChanged()
        {
            ChangeText();

            if(SetVarOnValueChangedCallback && Variable.Value != toggle.isOn)
                Variable.SetValue = toggle.isOn;
        }

        void OnExternalChange()
        {
            if(Variable != null && toggle.isOn != Variable.Value)
                toggle.isOn = Variable.Value;
        }

        void ChangeText()
        {
            if (TrueTextLocalization != null && FalseTextLocalization != null)
                valueText.ChangeText(toggle.isOn ? TrueTextLocalization.GetText(Language) : FalseTextLocalization.GetText(Language));
        }
    }
}