Initial commit

Library/PackageCache/com.unity.inputsystem@57d0e36f6123/Samples~/RebindingUI/CanvasGroupModifier.cs

@@ -0,0 +1,51 @@
+using UnityEngine.EventSystems;
+
+namespace UnityEngine.InputSystem.Samples.RebindUI
+{
+    /// <summary>
+    /// Simple utility that modifies a referenced CanvasGroup while being active.
+    /// </summary>
+    public class CanvasGroupModifier : MonoBehaviour
+    {
+        [Tooltip("The Canvas Group to be modified while this component is active")]
+        public CanvasGroup canvasGroup;
+
+        [Tooltip("The interactable setting to use for the Canvas Group while this component is active")]
+        public bool interactable = false;
+
+        private bool m_SavedInteractable;
+        private GameObject m_SelectedObject;
+
+        private void OnEnable()
+        {
+            if (canvasGroup != null)
+            {
+                // Store selection to make sure it is not changed when switching "windows".
+                m_SelectedObject = EventSystem.current.currentSelectedGameObject;
+
+                // Save current setting and override
+                m_SavedInteractable = canvasGroup.interactable;
+                canvasGroup.interactable = interactable;
+            }
+        }
+
+        private void OnDisable()
+        {
+            if (canvasGroup != null)
+            {
+                // Restore previous setting.
+                canvasGroup.interactable = m_SavedInteractable;
+
+                // Restore previous selection.
+                var eventSystem = EventSystem.current;
+                if (eventSystem != null)
+                {
+                    if (m_SelectedObject != null)
+                        eventSystem.SetSelectedGameObject(m_SelectedObject);
+                    else if (EventSystem.current.currentSelectedGameObject == null)
+                        eventSystem.SetSelectedGameObject(eventSystem.firstSelectedGameObject);
+                }
+            }
+        }
+    }
+}