1 files changed, 72 insertions, 0 deletions
diff --git a/mobile/android/geckoview/src/main/java/org/mozilla/gecko/util/ActivityUtils.java b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/util/ActivityUtils.java
new file mode 100644
index 000000000..2f15e7868
--- /dev/null
+++ b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/util/ActivityUtils.java
@@ -0,0 +1,72 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
+ * 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.gecko.util;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
+
+import org.mozilla.gecko.AppConstants.Versions;
+
+public class ActivityUtils {
+    private ActivityUtils() {
+    }
+
+    public static void setFullScreen(Activity activity, boolean fullscreen) {
+        // Hide/show the system notification bar
+        Window window = activity.getWindow();
+
+        if (Versions.feature16Plus) {
+            int newVis;
+            if (fullscreen) {
+                newVis = View.SYSTEM_UI_FLAG_FULLSCREEN;
+                if (Versions.feature19Plus) {
+                    newVis |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
+                            View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
+                            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
+                            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
+                            View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
+                } else {
+                    newVis |= View.SYSTEM_UI_FLAG_LOW_PROFILE;
+                }
+            } else {
+                newVis = View.SYSTEM_UI_FLAG_VISIBLE;
+            }
+
+            window.getDecorView().setSystemUiVisibility(newVis);
+        } else {
+            window.setFlags(fullscreen ?
+                            WindowManager.LayoutParams.FLAG_FULLSCREEN : 0,
+                            WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        }
+    }
+
+    public static boolean isFullScreen(final Activity activity) {
+        final Window window = activity.getWindow();
+
+        if (Versions.feature16Plus) {
+            final int vis = window.getDecorView().getSystemUiVisibility();
+            return (vis & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0;
+        }
+
+        final int flags = window.getAttributes().flags;
+        return ((flags & WindowManager.LayoutParams.FLAG_FULLSCREEN) != 0);
+    }
+
+    /**
+     * Finish this activity and launch the default home screen activity.
+     */
+    public static void goToHomeScreen(Activity activity) {
+        Intent intent = new Intent(Intent.ACTION_MAIN);
+
+        intent.addCategory(Intent.CATEGORY_HOME);
+        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        activity.startActivity(intent);
+
+    }
+}