maint: added livewatch asset

Assets/Plugins/LiveWatchLite/TowerDefenceDemo/Scripts/Slot/TowerBuildSlotUIHandler.cs

@@ -0,0 +1,56 @@
+using System;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Ingvar.LiveWatch.TowerDefenceDemo
+{
+    public class TowerBuildSlotUIHandler : MonoBehaviour
+    {
+        [SerializeField] private TowerBuildSlot _targetSlot;
+        [SerializeField] private ClickableObject _slotClickable;
+        [SerializeField] private TowerSlotBuildPopupUI _buildUI;
+        [SerializeField] private TowerSlotDestroyPopupUI _destroyUI;
+
+        private void Awake()
+        {
+            _buildUI.TargetSlot = _targetSlot;
+            _destroyUI.TargetSlot = _targetSlot;
+        }
+
+        private void OnEnable()
+        {
+            _slotClickable.Clicked += OnSlotClicked;
+            _targetSlot.OccupationChanged += OnSlotOccupied;
+        }
+
+        private void OnDisable()
+        {
+            _slotClickable.Clicked -= OnSlotClicked;
+            _targetSlot.OccupationChanged -= OnSlotOccupied;
+        }
+
+        private void OnSlotClicked()
+        {
+            if (_targetSlot.IsOccupied)
+            {
+                _destroyUI.Open();
+            }
+            else
+            {
+                _buildUI.Open();
+            }
+        }
+        
+        private void OnSlotOccupied()
+        {
+            if (_targetSlot.IsOccupied)
+            {
+                _buildUI.Close();
+            }
+            else
+            {
+                _destroyUI.Close();
+            }
+        }
+    }
+}