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| 1 // Copyright 2013 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.content.browser; | |
| 6 | |
| 7 import android.content.Context; | |
| 8 | |
| 9 import org.chromium.base.ThreadUtils; | |
| 10 import org.chromium.base.VisibleForTesting; | |
| 11 import org.chromium.base.annotations.CalledByNative; | |
| 12 import org.chromium.base.annotations.MainDex; | |
| 13 | |
| 14 import java.util.concurrent.FutureTask; | |
| 15 | |
| 16 /** | |
| 17 * Implements the Java side of LocationProviderAndroid. | |
| 18 * Delegates all real functionality to the implementation | |
| 19 * returned from LocationProviderFactory. | |
| 20 * See detailed documentation on | |
| 21 * content/browser/geolocation/location_api_adapter_android.h. | |
| 22 * Based on android.webkit.GeolocationService.java | |
| 23 */ | |
| 24 @MainDex | |
| 25 @VisibleForTesting | |
| 26 public class LocationProviderAdapter { | |
| 27 | |
| 28 // Delegate handling the real work in the main thread. | |
| 29 private LocationProviderFactory.LocationProvider mImpl; | |
| 30 | |
| 31 private LocationProviderAdapter(Context context) { | |
| 32 mImpl = LocationProviderFactory.get(context); | |
| 33 } | |
| 34 | |
| 35 @CalledByNative | |
| 36 static LocationProviderAdapter create(Context context) { | |
| 37 return new LocationProviderAdapter(context); | |
| 38 } | |
| 39 | |
| 40 /** | |
| 41 * Start listening for location updates until we're told to quit. May be cal
led in any thread. | |
| 42 * @param enableHighAccuracy Whether or not to enable high accuracy location
providers. | |
| 43 */ | |
| 44 @CalledByNative | |
| 45 public boolean start(final boolean enableHighAccuracy) { | |
| 46 FutureTask<Void> task = new FutureTask<Void>(new Runnable() { | |
| 47 @Override | |
| 48 public void run() { | |
| 49 mImpl.start(enableHighAccuracy); | |
| 50 } | |
| 51 }, null); | |
| 52 ThreadUtils.runOnUiThread(task); | |
| 53 return true; | |
| 54 } | |
| 55 | |
| 56 /** | |
| 57 * Stop listening for location updates. May be called in any thread. | |
| 58 */ | |
| 59 @CalledByNative | |
| 60 public void stop() { | |
| 61 FutureTask<Void> task = new FutureTask<Void>(new Runnable() { | |
| 62 @Override | |
| 63 public void run() { | |
| 64 mImpl.stop(); | |
| 65 } | |
| 66 }, null); | |
| 67 ThreadUtils.runOnUiThread(task); | |
| 68 } | |
| 69 | |
| 70 /** | |
| 71 * Returns true if we are currently listening for location updates, false if
not. | |
| 72 * Must be called only in the UI thread. | |
| 73 */ | |
| 74 public boolean isRunning() { | |
| 75 assert ThreadUtils.runningOnUiThread(); | |
| 76 return mImpl.isRunning(); | |
| 77 } | |
| 78 | |
| 79 public static void newLocationAvailable(double latitude, double longitude, d
ouble timestamp, | |
| 80 boolean hasAltitude, double altitude, | |
| 81 boolean hasAccuracy, double accuracy, | |
| 82 boolean hasHeading, double heading, | |
| 83 boolean hasSpeed, double speed) { | |
| 84 nativeNewLocationAvailable(latitude, longitude, timestamp, hasAltitude,
altitude, | |
| 85 hasAccuracy, accuracy, hasHeading, heading, hasSpeed, speed); | |
| 86 } | |
| 87 | |
| 88 public static void newErrorAvailable(String message) { | |
| 89 nativeNewErrorAvailable(message); | |
| 90 } | |
| 91 | |
| 92 // Native functions | |
| 93 private static native void nativeNewLocationAvailable( | |
| 94 double latitude, double longitude, double timeStamp, | |
| 95 boolean hasAltitude, double altitude, | |
| 96 boolean hasAccuracy, double accuracy, | |
| 97 boolean hasHeading, double heading, | |
| 98 boolean hasSpeed, double speed); | |
| 99 private static native void nativeNewErrorAvailable(String message); | |
| 100 } | |
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