/// <summary>
/// At a regular interval, get the compass heading in degrees.
/// </summary>
/// <param name="compassSuccess">onSuccess callback function that provides the compass heading information via a compassHeading object.</param>
/// <param name="compassError">onError callback function for compass functions.</param>
/// <param name="compassOptions">An optional parameter to customize the retrieval of the compass.</param>
/// <example>
/// uage
/// <code>
/// function onSuccess(heading) {
/// var element = document.getElementById('heading');
/// element.innerHTML = 'Heading: ' + heading.magneticHeading;
///};
///function onError(compassError) {
/// alert('Compass error: ' + compassError.code);
///};
///var options = { frequency: 3000 }; // Update every 3 seconds
///var watchID = navigator.compass.watchHeading(onSuccess, onError, options);
/// </code>
/// </example>
public JsString watchHeading(compassSuccess compassSuccess, CompassError compassError, CompassOptions compassOptions) { return null; }
/// <summary>
/// The compass is a sensor that detects the direction or heading that the device is pointed. It measures the heading in degrees from 0 to 359.99.
/// The compass heading information is returned via a CompassHeading object using the compassSuccess callback function.
/// </summary>
/// <param name="compassSuccess">onSuccess callback function that provides the compass heading information via a compassHeading object.</param>
/// <param name="compassError">onError callback function for compass functions.</param>
/// <param name="compassOptions">An optional parameter to customize the retrieval of the compass.</param>
/// <example>
/// uage
/// <code>
/// function onSuccess(heading) {
/// // alert('Heading: ' + heading.magneticHeading);
/// //};
/// //function onError(error) {
/// // alert('CompassError: ' + error.code);
/// //};
/// //navigator.compass.getCurrentHeading(onSuccess, onError);
/// </code>
/// </example>
public void getCurrentHeading(compassSuccess compassSuccess, CompassError compassError, CompassOptions compassOptions) { }