Merge "Add TunnelModeStateListener in java+jni" into sc-dev

1 files changed, 98 insertions, 0 deletions

diff --git a/core/java/android/view/TunnelModeEnabledListener.java b/core/java/android/view/TunnelModeEnabledListener.java
new file mode 100644
index 000000000000..c158da9dfa23
--- /dev/null
+++ b/core/java/android/view/TunnelModeEnabledListener.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.view;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.util.concurrent.Executor;
+
+/**
+ * Listens for tunnel mode enabled/disabled events from SurfaceFlinger.
+ * {@hide}
+ */
+public abstract class TunnelModeEnabledListener {
+
+    private long mNativeListener;
+    private final Executor mExecutor;
+
+    public TunnelModeEnabledListener(Executor executor) {
+        mExecutor = executor;
+        mNativeListener = nativeCreate(this);
+    }
+
+    /**
+     * Destroys the listener.
+     */
+    public void destroy() {
+        if (mNativeListener == 0) {
+            return;
+        }
+        unregister(this);
+        nativeDestroy(mNativeListener);
+        mNativeListener = 0;
+    }
+
+    @Override
+    protected void finalize() throws Throwable {
+        try {
+            destroy();
+        } finally {
+            super.finalize();
+        }
+    }
+
+    /**
+     * Reports when tunnel mode has been enabled/disabled.
+     */
+    public abstract void onTunnelModeEnabledChanged(boolean tunnelModeEnabled);
+
+    /**
+     * Registers a listener.
+     */
+    public static void register(TunnelModeEnabledListener listener) {
+        if (listener.mNativeListener == 0) {
+            return;
+        }
+        nativeRegister(listener.mNativeListener);
+    }
+
+    /**
+     * Unregisters a listener.
+     */
+    public static void unregister(TunnelModeEnabledListener listener) {
+        if (listener.mNativeListener == 0) {
+            return;
+        }
+        nativeUnregister(listener.mNativeListener);
+    }
+
+    /**
+     * Dispatch tunnel mode enabled.
+     *
+     * Called from native code on a binder thread.
+     */
+    @VisibleForTesting
+    public static void dispatchOnTunnelModeEnabledChanged(TunnelModeEnabledListener listener,
+            boolean tunnelModeEnabled) {
+        listener.mExecutor.execute(() -> listener.onTunnelModeEnabledChanged(tunnelModeEnabled));
+    }
+
+    private static native long nativeCreate(TunnelModeEnabledListener thiz);
+    private static native void nativeDestroy(long ptr);
+    private static native void nativeRegister(long ptr);
+    private static native void nativeUnregister(long ptr);
+}