Scriptum/Assets/Scripts/REFACTORING/Application/UI/Panel/TaskPanelController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using System; 

public class TaskPanelController : PanelController<Task>
{
    protected override UIBaseManager<Task> FetchUiManager()  // check if need return by ref
    {
        var uiManager = GameObject.FindObjectOfType<TaskUIManager>();

        // uiManager.SetPanelController(gameObject);  - unnecessary

        return uiManager;
    }


    public override void BuildPanelContent(List<Task> elements)
    {
        base.BuildPanelContent(elements);

        ClearSlots();

        for (int i = 0; i < elements.Count; i++)
        {
            this.AddTask(elements[i]);
        }
    }

    public void AddTask(Task _task)
    {
        // update TaskManager main list of task
        //TaskManager.Instance.AddTask(_task);

        // add task to local panel contant
        GameObject newTaskBox = SetupTaskBox(_task);

        // Set new Slot instance
        ChildBoxList.Add(newTaskBox);
    }

    protected GameObject SetupTaskBox(Task _task)
    {
        if (ChildBoxTemplate == null)
            throw new Exception("taskbox_template is empty");

        GameObject _newTaskBox = MonoBehaviour.Instantiate(ChildBoxTemplate, _panelContent.transform.position, Quaternion.identity); //.GetComponent<TaskBox>();

        _newTaskBox.transform.SetParent(_panelContent.transform);

        _newTaskBox.transform.localScale = new Vector3(2.5f, 2.5f, 1.0f);

        _newTaskBox.GetComponent<TaskBox>().SetTask(_task);

        return _newTaskBox;
    }



    // Ignored methods
    public override void BuildPanelSlots()
    {
        return;
    }

    public override GameObject BuildSlot(int key, GameObject _parent)
    {
        throw new NotImplementedException();
    }

    public override void ClearSlots()
    {
        foreach(var taskObj in ChildBoxList)
        {
            DestroyImmediate(taskObj);
        }

        ChildBoxList.Clear();
    }
}