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  /*
   * Copyright 2012 Google Inc.
   * 
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
   * use this file except in compliance with the License. You may obtain a copy of
   * the License at
   * 
   * http://www.apache.org/licenses/LICENSE-2.0
   * 
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  * License for the specific language governing permissions and limitations under
  * the License.
  */
 package elemental.dom;
 
 import  elemental.dom.*;
 
 import java.util.Date;

 
 public interface Geolocation {


  
When the clearWatch() method is called, the watch() process stops calling for new position identifiers and cease invoking callbacks.
 
   void clearWatch(int watchId);


  

Acquires the user's current position via a new position object. If this fails, errorCallback is invoked with an nsIDOMGeoPositionError argument.

Parameters
successCallback
An nsIDOMGeoPositionCallback to be called when the current position is available.
errorCallback
An nsIDOMGeoPositionErrorCallback that is called if an error occurs while retrieving the position; this parameter is optional.
options
An nsIDOMGeoPositionOptions object specifying options; this parameter is optional.
 
   void getCurrentPosition(PositionCallback successCallback);


  

Acquires the user's current position via a new position object. If this fails, errorCallback is invoked with an nsIDOMGeoPositionError argument.

Parameters
successCallback
An nsIDOMGeoPositionCallback to be called when the current position is available.
errorCallback
An nsIDOMGeoPositionErrorCallback that is called if an error occurs while retrieving the position; this parameter is optional.
options
An nsIDOMGeoPositionOptions object specifying options; this parameter is optional.
 
   void getCurrentPosition(PositionCallback successCallbackPositionErrorCallback errorCallback);


  

Similar to getCurrentPosition(), except it continues to call the callback with updated position information periodically until clearWatch() is called.

Parameters
successCallback
An nsIDOMGeoPositionCallback that is to be called whenever new position information is available.
errorCallback
An nsIDOMGeoPositionErrorCallback to call when an error occurs; this is an optional parameter.
options
An nsIDOMGeoPositionOptions object specifying options; this parameter is optional.
Return value

An ID number that can be used to reference the watcher in the future when calling clearWatch().

 
   int watchPosition(PositionCallback successCallback);


  

Similar to getCurrentPosition(), except it continues to call the callback with updated position information periodically until clearWatch() is called.

Parameters
successCallback
An nsIDOMGeoPositionCallback that is to be called whenever new position information is available.
errorCallback
An nsIDOMGeoPositionErrorCallback to call when an error occurs; this is an optional parameter.
options
An nsIDOMGeoPositionOptions object specifying options; this parameter is optional.
Return value

An ID number that can be used to reference the watcher in the future when calling clearWatch().

 
  int watchPosition(PositionCallback successCallbackPositionErrorCallback errorCallback);
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