Initial commit

Assets/LiveOpsExamples/Scripts/UI/ToastsPanel.cs

@@ -0,0 +1,78 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace LiveOpsExamples
+{
+  public class ToastsPanel : MonoBehaviour
+  {
+    private const float ToastLifetimeSeconds = 4.2f;
+
+    [SerializeField] private PanelRenderer panelRenderer;
+    [SerializeField] private CozyCollectorController controller;
+    [SerializeField] private VisualTreeAsset toastTemplate;
+
+    private readonly List<ToastView> _toasts = new List<ToastView>();
+    private readonly List<float> _dismissAt = new List<float>();
+
+    private VisualElement _container;
+
+    private void OnEnable()
+    {
+      panelRenderer.RegisterUIReloadCallback(OnUIReload);
+      controller.ToastRequested += HandleToastRequested;
+    }
+
+    private void OnDisable()
+    {
+      panelRenderer.UnregisterUIReloadCallback(OnUIReload);
+      controller.ToastRequested -= HandleToastRequested;
+    }
+
+    private void OnUIReload(PanelRenderer renderer, VisualElement root)
+    {
+      _container = root.Q("toasts");
+    }
+
+    private void Update()
+    {
+      for (int i = _toasts.Count - 1; i >= 0; i--)
+      {
+        if (Time.unscaledTime >= _dismissAt[i])
+        {
+          Dismiss(i);
+        }
+      }
+    }
+
+    private void HandleToastRequested(string title, string message, CozyToastTone tone)
+    {
+      var root = toastTemplate.CloneTree();
+      _container.Add(root);
+
+      var toast = new ToastView(root);
+      toast.Set(title, message, tone);
+      toast.Root.RegisterCallback<ClickEvent>(_ => Dismiss(toast));
+
+      _toasts.Add(toast);
+      _dismissAt.Add(Time.unscaledTime + ToastLifetimeSeconds);
+    }
+
+    private void Dismiss(ToastView toast)
+    {
+      int index = _toasts.IndexOf(toast);
+      if (index >= 0)
+      {
+        Dismiss(index);
+      }
+    }
+
+    private void Dismiss(int index)
+    {
+      var toast = _toasts[index];
+      _toasts.RemoveAt(index);
+      _dismissAt.RemoveAt(index);
+      toast.Root.RemoveFromHierarchy();
+    }
+  }
+}