Mon 21 Jul 22:43:21 CEST 2025
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/*
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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*/
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package org.apache.cordova.geolocation;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Timer;
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import java.util.TimerTask;
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import org.apache.cordova.CallbackContext;
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import android.location.Location;
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import android.location.LocationListener;
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import android.location.LocationManager;
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import android.os.Bundle;
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import android.util.Log;
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public class CordovaLocationListener implements LocationListener {
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public static int PERMISSION_DENIED = 1;
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public static int POSITION_UNAVAILABLE = 2;
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public static int TIMEOUT = 3;
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protected LocationManager locationManager;
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private GeoBroker owner;
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protected boolean running = false;
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public HashMap<String, CallbackContext> watches = new HashMap<String, CallbackContext>();
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private List<CallbackContext> callbacks = new ArrayList<CallbackContext>();
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private Timer timer = null;
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private String TAG = "[Cordova Location Listener]";
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public CordovaLocationListener(LocationManager manager, GeoBroker broker, String tag) {
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this.locationManager = manager;
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this.owner = broker;
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this.TAG = tag;
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}
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protected void fail(int code, String message) {
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this.cancelTimer();
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for (CallbackContext callbackContext: this.callbacks)
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{
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this.owner.fail(code, message, callbackContext, false);
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}
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if(this.owner.isGlobalListener(this) && this.watches.size() == 0)
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{
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Log.d(TAG, "Stopping global listener");
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this.stop();
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}
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this.callbacks.clear();
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Iterator<CallbackContext> it = this.watches.values().iterator();
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while (it.hasNext()) {
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this.owner.fail(code, message, it.next(), true);
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}
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}
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private void win(Location loc) {
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this.cancelTimer();
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for (CallbackContext callbackContext: this.callbacks)
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{
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this.owner.win(loc, callbackContext, false);
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}
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if(this.owner.isGlobalListener(this) && this.watches.size() == 0)
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{
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Log.d(TAG, "Stopping global listener");
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this.stop();
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}
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this.callbacks.clear();
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Iterator<CallbackContext> it = this.watches.values().iterator();
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while (it.hasNext()) {
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this.owner.win(loc, it.next(), true);
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}
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}
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/**
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* Location Listener Methods
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*/
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/**
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* Called when the provider is disabled by the user.
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*
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* @param provider
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*/
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public void onProviderDisabled(String provider) {
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Log.d(TAG, "Location provider '" + provider + "' disabled.");
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this.fail(POSITION_UNAVAILABLE, "GPS provider disabled.");
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}
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/**
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* Called when the provider is enabled by the user.
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*
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* @param provider
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*/
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public void onProviderEnabled(String provider) {
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Log.d(TAG, "Location provider "+ provider + " has been enabled");
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}
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/**
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* Called when the provider status changes. This method is called when a
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* provider is unable to fetch a location or if the provider has recently
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* become available after a period of unavailability.
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*
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* @param provider
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* @param status
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* @param extras
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*/
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public void onStatusChanged(String provider, int status, Bundle extras) {
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Log.d(TAG, "The status of the provider " + provider + " has changed");
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if (status == 0) {
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Log.d(TAG, provider + " is OUT OF SERVICE");
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this.fail(CordovaLocationListener.POSITION_UNAVAILABLE, "Provider " + provider + " is out of service.");
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}
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else if (status == 1) {
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Log.d(TAG, provider + " is TEMPORARILY_UNAVAILABLE");
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}
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else {
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Log.d(TAG, provider + " is AVAILABLE");
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}
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}
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/**
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* Called when the location has changed.
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*
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* @param location
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*/
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public void onLocationChanged(Location location) {
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Log.d(TAG, "The location has been updated!");
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this.win(location);
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}
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// PUBLIC
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public int size() {
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return this.watches.size() + this.callbacks.size();
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}
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public void addWatch(String timerId, CallbackContext callbackContext) {
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this.watches.put(timerId, callbackContext);
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if (this.size() == 1) {
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this.start();
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}
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}
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public void addCallback(CallbackContext callbackContext, int timeout) {
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if(this.timer == null) {
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this.timer = new Timer();
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}
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this.timer.schedule(new LocationTimeoutTask(callbackContext, this), timeout);
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this.callbacks.add(callbackContext);
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if (this.size() == 1) {
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this.start();
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}
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}
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public void clearWatch(String timerId) {
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if (this.watches.containsKey(timerId)) {
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this.watches.remove(timerId);
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}
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if (this.size() == 0) {
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this.stop();
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}
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}
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/**
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* Destroy listener.
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*/
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public void destroy() {
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this.stop();
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}
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// LOCAL
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/**
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* Start requesting location updates.
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*
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* @param interval
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*/
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protected void start() {
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if (!this.running) {
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if (this.locationManager.getProvider(LocationManager.NETWORK_PROVIDER) != null) {
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this.running = true;
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this.locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 60000, 10, this);
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} else {
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this.fail(CordovaLocationListener.POSITION_UNAVAILABLE, "Network provider is not available.");
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}
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}
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}
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/**
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* Stop receiving location updates.
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*/
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private void stop() {
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this.cancelTimer();
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if (this.running) {
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this.locationManager.removeUpdates(this);
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this.running = false;
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}
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}
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private void cancelTimer() {
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if(this.timer != null) {
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this.timer.cancel();
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this.timer.purge();
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this.timer = null;
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}
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}
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private class LocationTimeoutTask extends TimerTask {
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private CallbackContext callbackContext = null;
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private CordovaLocationListener listener = null;
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public LocationTimeoutTask(CallbackContext callbackContext, CordovaLocationListener listener) {
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this.callbackContext = callbackContext;
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this.listener = listener;
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}
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@Override
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public void run() {
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for (CallbackContext callbackContext: listener.callbacks) {
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if(this.callbackContext == callbackContext) {
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listener.callbacks.remove(callbackContext);
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break;
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}
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}
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if(listener.size() == 0) {
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listener.stop();
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}
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}
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}
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}
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