43 lines
1.4 KiB
Java
43 lines
1.4 KiB
Java
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// Copyright 2015 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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package org.chromium.net;
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import org.chromium.base.ApplicationState;
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import org.chromium.base.ApplicationStatus;
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/** Registration policy which depends on the ApplicationState. */
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public class RegistrationPolicyApplicationStatus
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extends NetworkChangeNotifierAutoDetect.RegistrationPolicy
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implements ApplicationStatus.ApplicationStateListener {
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private boolean mDestroyed;
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@Override
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protected void init(NetworkChangeNotifierAutoDetect notifier) {
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super.init(notifier);
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ApplicationStatus.registerApplicationStateListener(this);
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onApplicationStateChange(ApplicationState.UNKNOWN);
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}
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@Override
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protected void destroy() {
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if (mDestroyed) return;
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ApplicationStatus.unregisterApplicationStateListener(this);
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mDestroyed = true;
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}
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// ApplicationStatus.ApplicationStateListener
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@Override
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public void onApplicationStateChange(int newState) {
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// Use hasVisibleActivities() to determine if one of Chrome's activities
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// is visible. Using |newState| causes spurious unregister then register
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// events when flipping between Chrome's Activities, crbug.com/1030229.
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if (ApplicationStatus.hasVisibleActivities()) {
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register();
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} else {
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unregister();
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}
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}
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}
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