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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 package org.chromium.device.sensors; |
| 6 |
| 7 import org.chromium.mojom.device.sensors.SensorConfiguration; |
| 8 |
| 9 import java.util.ArrayList; |
| 10 import java.util.Collections; |
| 11 import java.util.Comparator; |
| 12 import java.util.List; |
| 13 |
| 14 /** |
| 15 * Generic list of configurations. |
| 16 */ |
| 17 public class SensorConfigurations extends ArrayList<SensorConfiguration> { |
| 18 private final Comparator<SensorConfiguration> mComparator; |
| 19 |
| 20 SensorConfigurations() { |
| 21 super(); |
| 22 mComparator = new SensorConfigurationComparator(); |
| 23 } |
| 24 |
| 25 SensorConfigurations(Comparator<SensorConfiguration> comparator) { |
| 26 super(); |
| 27 mComparator = comparator; |
| 28 } |
| 29 |
| 30 private static class SensorConfigurationComparator implements Comparator<Sen
sorConfiguration> { |
| 31 @Override |
| 32 public int compare(SensorConfiguration lhs, SensorConfiguration rhs) { |
| 33 if (lhs.frequency == rhs.frequency) |
| 34 return 0; |
| 35 else if (rhs.frequency > lhs.frequency) |
| 36 return 1; |
| 37 else |
| 38 return -1; |
| 39 } |
| 40 }; |
| 41 |
| 42 public boolean add(SensorConfiguration configuration) { |
| 43 if (configuration == null) return false; |
| 44 boolean result = super.add(configuration); |
| 45 if (result) Collections.sort(this, mComparator); |
| 46 return result; |
| 47 } |
| 48 |
| 49 public boolean remove(SensorConfiguration configuration) { |
| 50 if (configuration == null) return false; |
| 51 if (!super.remove(configuration)) return false; |
| 52 Collections.sort(this, mComparator); |
| 53 return true; |
| 54 } |
| 55 }; |
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