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// 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.content.browser;
import android.content.Context;
import org.chromium.base.ThreadUtils;
import org.chromium.base.VisibleForTesting;
import org.chromium.base.annotations.CalledByNative;
import org.chromium.base.annotations.MainDex;
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/android_location_api_adapter.h.
* Based on android.webkit.GeolocationService.java
*/
@MainDex
@VisibleForTesting
public class LocationProviderAdapter {
// Delegate handling the real work in the main thread.
private LocationProviderFactory.LocationProvider mImpl;
private LocationProviderAdapter(Context context) {
mImpl = LocationProviderFactory.get(context);
}
@CalledByNative
static LocationProviderAdapter create(Context context) {
return new LocationProviderAdapter(context);
}
/**
* Start listening for location updates until we're told to quit. May be
* called in any thread.
* @param gpsEnabled Whether or not we're interested in high accuracy GPS.
*/
@CalledByNative
public boolean start(final boolean gpsEnabled) {
FutureTask<Void> task = new FutureTask<Void>(new Runnable() {
@Override
public void run() {
mImpl.start(gpsEnabled);
}
}, null);
ThreadUtils.runOnUiThread(task);
return true;
}
/**
* 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 newLocationAvailable(double latitude, double longitude, double timestamp,
boolean hasAltitude, double altitude,
boolean hasAccuracy, double accuracy,
boolean hasHeading, double heading,
boolean hasSpeed, double speed) {
nativeNewLocationAvailable(latitude, longitude, timestamp, hasAltitude, altitude,
hasAccuracy, accuracy, hasHeading, heading, hasSpeed, speed);
}
public static void newErrorAvailable(String 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);
}
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