Index: components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTaskSchedulerFactory.java |
diff --git a/components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTaskSchedulerFactory.java b/components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTaskSchedulerFactory.java |
new file mode 100644 |
index 0000000000000000000000000000000000000000..239e855f777003e2a7f456f6bd502646bdd757b2 |
--- /dev/null |
+++ b/components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTaskSchedulerFactory.java |
@@ -0,0 +1,39 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+package org.chromium.components.background_task_scheduler; |
+ |
+import android.annotation.TargetApi; |
+import android.os.Build; |
+ |
+import org.chromium.base.ThreadUtils; |
+ |
+/** |
+ * A factory for {@link BackgroundTaskScheduler} that ensures there is only ever a single instance. |
+ */ |
+public final class BackgroundTaskSchedulerFactory { |
+ private static BackgroundTaskScheduler sInstance; |
+ |
+ @TargetApi(Build.VERSION_CODES.M) |
+ private static BackgroundTaskSchedulerDelegate getSchedulerDelegate() { |
+ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { |
+ return new BackgroundTaskSchedulerJobService(); |
+ } else { |
+ throw new RuntimeException("Not able to schedule through GCM yet."); |
+ } |
+ } |
+ |
+ /** |
+ * @return the current instance of the {@link BackgroundTaskScheduler}. Creates one if none |
+ * exist. |
+ */ |
+ public static BackgroundTaskScheduler getScheduler() { |
+ ThreadUtils.assertOnUiThread(); |
+ if (sInstance == null) sInstance = new BackgroundTaskScheduler(getSchedulerDelegate()); |
+ return sInstance; |
+ } |
+ |
+ // Do not instantiate. |
+ private BackgroundTaskSchedulerFactory() {} |
+} |