1 files changed, 60 insertions, 0 deletions
diff --git a/mobile/android/geckoview/src/main/java/org/mozilla/geckoview/OrientationController.java b/mobile/android/geckoview/src/main/java/org/mozilla/geckoview/OrientationController.java
new file mode 100644
index 0000000000..e2a4c236b5
--- /dev/null
+++ b/mobile/android/geckoview/src/main/java/org/mozilla/geckoview/OrientationController.java
@@ -0,0 +1,60 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * vim: ts=4 sw=4 expandtab:
+ * 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 http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.geckoview;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.UiThread;
+import org.mozilla.gecko.util.ThreadUtils;
+
+public class OrientationController {
+  private OrientationDelegate mDelegate;
+
+  OrientationController() {}
+
+  /**
+   * Sets the {@link OrientationDelegate} for this instance.
+   *
+   * @param delegate The {@link OrientationDelegate} instance.
+   */
+  @UiThread
+  public void setDelegate(final @Nullable OrientationDelegate delegate) {
+    ThreadUtils.assertOnUiThread();
+    mDelegate = delegate;
+  }
+
+  /**
+   * Gets the {@link OrientationDelegate} for this instance.
+   *
+   * @return delegate The {@link OrientationDelegate} instance.
+   */
+  @UiThread
+  @Nullable
+  public OrientationDelegate getDelegate() {
+    ThreadUtils.assertOnUiThread();
+    return mDelegate;
+  }
+
+  /** This delegate will be called whenever an orientation lock is called. */
+  @UiThread
+  public interface OrientationDelegate {
+    /**
+     * Called whenever the orientation should be locked.
+     *
+     * @param aOrientation The desired orientation such as ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+     * @return A {@link GeckoResult} which resolves to a {@link AllowOrDeny}
+     */
+    @Nullable
+    default GeckoResult<AllowOrDeny> onOrientationLock(@NonNull final int aOrientation) {
+      return null;
+    }
+
+    /** Called whenever the orientation should be unlocked. */
+    @Nullable
+    default void onOrientationUnlock() {}
+  }
+}