From 45f1194d439f0bb05a97910f989fab641d9a0a5f Mon Sep 17 00:00:00 2001
From: Alejandro Nijamkin <nijamkin@google.com>
Date: Fri, 8 Jul 2022 16:45:34 -0700
Subject: [PATCH] Unhides window visibility listener API.

Bug: b/235403546
Fix: b/235403546
Test: the API has been in use in other CLs
Change-Id: Ia59cbf5288d893204dc361fcde9695179f52f5e0
---
 core/api/current.txt                         | 6 ++++++
 core/java/android/view/ViewTreeObserver.java | 6 ------
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/core/api/current.txt b/core/api/current.txt
index bb3264701ca5a..74769a3fc7b5b 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -51083,6 +51083,7 @@ package android.view {
     method public void addOnTouchModeChangeListener(android.view.ViewTreeObserver.OnTouchModeChangeListener);
     method public void addOnWindowAttachListener(android.view.ViewTreeObserver.OnWindowAttachListener);
     method public void addOnWindowFocusChangeListener(android.view.ViewTreeObserver.OnWindowFocusChangeListener);
+    method public void addOnWindowVisibilityChangeListener(@NonNull android.view.ViewTreeObserver.OnWindowVisibilityChangeListener);
     method public void dispatchOnDraw();
     method public void dispatchOnGlobalLayout();
     method public boolean dispatchOnPreDraw();
@@ -51098,6 +51099,7 @@ package android.view {
     method public void removeOnTouchModeChangeListener(android.view.ViewTreeObserver.OnTouchModeChangeListener);
     method public void removeOnWindowAttachListener(android.view.ViewTreeObserver.OnWindowAttachListener);
     method public void removeOnWindowFocusChangeListener(android.view.ViewTreeObserver.OnWindowFocusChangeListener);
+    method public void removeOnWindowVisibilityChangeListener(@NonNull android.view.ViewTreeObserver.OnWindowVisibilityChangeListener);
     method public boolean unregisterFrameCommitCallback(@NonNull Runnable);
   }
 
@@ -51134,6 +51136,10 @@ package android.view {
     method public void onWindowFocusChanged(boolean);
   }
 
+  public static interface ViewTreeObserver.OnWindowVisibilityChangeListener {
+    method public void onWindowVisibilityChanged(int);
+  }
+
   public abstract class Window {
     ctor public Window(@UiContext android.content.Context);
     method public abstract void addContentView(android.view.View, android.view.ViewGroup.LayoutParams);
diff --git a/core/java/android/view/ViewTreeObserver.java b/core/java/android/view/ViewTreeObserver.java
index ed8350afc109c..2c077c3e9e639 100644
--- a/core/java/android/view/ViewTreeObserver.java
+++ b/core/java/android/view/ViewTreeObserver.java
@@ -109,8 +109,6 @@ public final class ViewTreeObserver {
     /**
      * Interface definition for a callback to be invoked when the view hierarchy's window
      * visibility changes.
-     *
-     * @hide
      */
     public interface OnWindowVisibilityChangeListener {
         /**
@@ -569,8 +567,6 @@ public final class ViewTreeObserver {
      * @param listener The callback to add
      *
      * @throws IllegalStateException If {@link #isAlive()} returns false
-     *
-     * @hide
      */
     public void addOnWindowVisibilityChangeListener(
             @NonNull OnWindowVisibilityChangeListener listener) {
@@ -593,8 +589,6 @@ public final class ViewTreeObserver {
      *
      * @see #addOnWindowVisibilityChangeListener(
      * android.view.ViewTreeObserver.OnWindowVisibilityChangeListener)
-     *
-     * @hide
      */
     public void removeOnWindowVisibilityChangeListener(
             @NonNull OnWindowVisibilityChangeListener victim) {