using System;
using UIWidgets;
using UnityEngine;
using UnityEngine.UI;

namespace UIWidgetsSamples.ToDoList
{
	public class ToDoListViewComponent : ListViewItem, IListViewItemHeight
	{
		[SerializeField]
		public Toggle Toggle;

		[SerializeField]
		public Text Task;

		[NonSerialized]
		public ToDoListItem Item;

		private LayoutGroup layoutGroup;

		public float Height
		{
			get
			{
				return CalculateHeight();
			}
		}

		public LayoutGroup LayoutGroup
		{
			get
			{
				if (layoutGroup == null)
				{
					layoutGroup = GetComponent<LayoutGroup>();
				}
				return layoutGroup;
			}
		}

		protected override void Start()
		{
			base.Start();
			Toggle.onValueChanged.AddListener(OnToggle);
		}

		private void OnToggle(bool toggle)
		{
			Item.Done = toggle;
		}

		public void SetData(ToDoListItem item)
		{
			Item = item;
			if (Item == null)
			{
				Toggle.isOn = false;
				Task.text = string.Empty;
			}
			else
			{
				Toggle.isOn = Item.Done;
				Task.text = Item.Task.Replace("\\n", "\n");
			}
		}

		private float CalculateHeight()
		{
			base.gameObject.SetActive(true);
			LayoutGroup.CalculateLayoutInputHorizontal();
			LayoutGroup.SetLayoutHorizontal();
			LayoutGroup.CalculateLayoutInputVertical();
			LayoutGroup.SetLayoutVertical();
			float preferredHeight = LayoutUtility.GetPreferredHeight(base.transform as RectTransform);
			base.gameObject.SetActive(false);
			return preferredHeight;
		}

		protected override void OnDestroy()
		{
			base.OnDestroy();
			if (Toggle != null)
			{
				Toggle.onValueChanged.RemoveListener(OnToggle);
			}
		}
	}
}