Restore the stable legacy Unity project

Assets/Scripts/UI/DropdownMenu.cs

@@ -0,0 +1,88 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using TMPro;
+using UnityEngine;
+using UnityEngine.UI;
+using UniRx;
+
+public class DropdownMenu : MonoBehaviour
+{
+    public Canvas Canvas;
+    public ClickCatcher CancelClickCatcher;
+    public PropertyButton OptionPrefab;
+
+    public RectTransform ContentRoot;
+
+    public float OptionHeight;
+    public float PaddingHeight;
+    
+    private List<GameObject> _options = new List<GameObject>();
+    private IDisposable _backgroundClickSubscription;
+
+    private void OnEnable()
+    {
+        if (CancelClickCatcher != null)
+            _backgroundClickSubscription = CancelClickCatcher.OnClick.Subscribe(data =>
+            {
+                End();
+            });
+    }
+
+    private void OnDisable()
+    {
+        _backgroundClickSubscription?.Dispose();
+        _backgroundClickSubscription = null;
+    }
+
+    private void End()
+    {
+        CancelClickCatcher.gameObject.SetActive(false);
+        gameObject.SetActive(false);
+        ActionGameManager.Instance?.Input.Global.Enable();
+    }
+
+    public void Clear()
+    {
+        // Destroy previous options
+        foreach(var option in _options)
+            Destroy(option);
+        _options.Clear();
+    }
+
+    public void AddOption(string text, Action action, bool selected = false, bool enabled = true)
+    {
+        var optionButton = Instantiate(OptionPrefab, ContentRoot);
+        optionButton.Label.text = text;
+        optionButton.Button.onClick.AddListener(() =>
+        {
+            action();
+            End();
+        });
+        optionButton.Button.interactable = enabled;
+        //optionButton.Button..CurrentState = !enabled ? FlatButtonState.Disabled : selected ? FlatButtonState.Selected : FlatButtonState.Unselected;
+        _options.Add(optionButton.gameObject);
+    }
+
+    public void Show(RectTransform parent)
+    {
+        var rect = transform as RectTransform;
+        var pivot = rect.pivot;
+        pivot.x = 0;
+        var scaleFactor = Canvas.scaleFactor;
+        var corners = new Vector3[4];
+        parent.GetWorldCorners(corners);
+        var pivotTop = corners[0].y > (PaddingHeight + _options.Count * OptionHeight) * scaleFactor;
+        pivot.y = pivotTop ? 1 : 0;
+        rect.pivot = pivot;
+        rect.sizeDelta = parent.sizeDelta;
+        rect.position = pivotTop ? corners[0] : corners[1];
+        CancelClickCatcher.gameObject.SetActive(true);
+        ActionGameManager.Instance?.Input.Global.Disable();
+    }
+}