| // Copyright 2013 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.device.geolocation; |
| |
| import android.location.Location; |
| |
| import org.chromium.base.Log; |
| import org.chromium.base.ThreadUtils; |
| import org.chromium.base.VisibleForTesting; |
| import org.chromium.base.annotations.CalledByNative; |
| |
| import java.util.concurrent.FutureTask; |
| |
| /** |
| * Implements the Java side of LocationProviderAndroid. |
| * Delegates all real functionality to the implementation |
| * returned from LocationProviderFactory. |
| * See detailed documentation on |
| * content/browser/geolocation/location_api_adapter_android.h. |
| * Based on android.webkit.GeolocationService.java |
| */ |
| @VisibleForTesting |
| public class LocationProviderAdapter { |
| private static final String TAG = "cr_LocationProvider"; |
| |
| // Delegate handling the real work in the main thread. |
| private LocationProviderFactory.LocationProvider mImpl; |
| |
| private LocationProviderAdapter() { |
| mImpl = LocationProviderFactory.create(); |
| } |
| |
| @CalledByNative |
| public static LocationProviderAdapter create() { |
| return new LocationProviderAdapter(); |
| } |
| |
| /** |
| * Start listening for location updates until we're told to quit. May be called in any thread. |
| * @param enableHighAccuracy Whether or not to enable high accuracy location providers. |
| */ |
| @CalledByNative |
| public void start(final boolean enableHighAccuracy) { |
| FutureTask<Void> task = new FutureTask<Void>(new Runnable() { |
| @Override |
| public void run() { |
| mImpl.start(enableHighAccuracy); |
| } |
| }, null); |
| ThreadUtils.runOnUiThread(task); |
| } |
| |
| /** |
| * Stop listening for location updates. May be called in any thread. |
| */ |
| @CalledByNative |
| public void stop() { |
| FutureTask<Void> task = new FutureTask<Void>(new Runnable() { |
| @Override |
| public void run() { |
| mImpl.stop(); |
| } |
| }, null); |
| ThreadUtils.runOnUiThread(task); |
| } |
| |
| /** |
| * Returns true if we are currently listening for location updates, false if not. |
| * Must be called only in the UI thread. |
| */ |
| public boolean isRunning() { |
| assert ThreadUtils.runningOnUiThread(); |
| return mImpl.isRunning(); |
| } |
| |
| public static void onNewLocationAvailable(Location location) { |
| nativeNewLocationAvailable(location.getLatitude(), location.getLongitude(), |
| location.getTime() / 1000.0, location.hasAltitude(), location.getAltitude(), |
| location.hasAccuracy(), location.getAccuracy(), location.hasBearing(), |
| location.getBearing(), location.hasSpeed(), location.getSpeed()); |
| } |
| |
| public static void newErrorAvailable(String message) { |
| Log.e(TAG, "newErrorAvailable %s", message); |
| nativeNewErrorAvailable(message); |
| } |
| |
| // Native functions |
| private static native void nativeNewLocationAvailable(double latitude, double longitude, |
| double timeStamp, boolean hasAltitude, double altitude, boolean hasAccuracy, |
| double accuracy, boolean hasHeading, double heading, boolean hasSpeed, double speed); |
| private static native void nativeNewErrorAvailable(String message); |
| } |