Drupal.gmap.addHandler('locpick_latitude',function(elem) {
  var obj = this;
  
  obj.bind("init", function() {
    if (elem.value != '') {
      obj.vars.latitude = toLatLng(elem.value);
      obj.locpick_coord = new GLatLng(obj.vars.latitude, obj.vars.longitude);
    }
    else {
      obj.locpick_coord = null;
      obj.locpick_invalid = true;
    }
  });

  var binding = obj.bind("locpickchange", function() {
    if (obj.locpick_coord) {
      elem.value = obj.locpick_coord.lat();
    }
    else {
      elem.value = '';
    }
  });

  $(elem).unbind("change");
  $(elem).change(function() {
    if (elem.value != '') {
      if (obj.locpick_coord) {
        obj.locpick_coord = new GLatLng(toLatLng(elem.value), obj.locpick_coord.lng());
        obj.change('locpickchange', binding);
      }
      else {
        obj.locpick_coord = new GLatLng(toLatLng(elem.value), 0.0);
      }
    }
    else {
      obj.change('locpickremove', -1);
    }
  });
});

Drupal.gmap.addHandler('locpick_longitude', function(elem) {
  var obj = this;
  
  obj.bind("init", function() {
    if (elem.value != '') {
      obj.vars.longitude = toLatLng(elem.value);
      obj.locpick_coord = new GLatLng(obj.vars.latitude, obj.vars.longitude);
    }
    else {
      obj.locpick_invalid = true;
    }
  });

  var binding = obj.bind("locpickchange", function() {
    if (obj.locpick_coord) {
      elem.value = obj.locpick_coord.lng();
    }
    else {
      elem.value = '';
    }
  });
  
  $(elem).unbind("change");
  $(elem).change(function() {
    if (elem.value != '') {
      if (obj.locpick_coord) {
        obj.locpick_coord = new GLatLng(obj.locpick_coord.lat(), toLatLng(elem.value));
        obj.change('locpickchange', binding);
      }
      else {
        obj.locpick_coord = new GLatLng(0.0, toLatLng(elem.value));
      }
    }
    else {
      obj.change('locpickremove', -1);
    }
  });
});

function toLatLng(string) {
	if(!isNaN(string)) {
		return string;
	}
	regex = /^([+-]?)(\d+)(?:\xC2\xB0|\xA1|°)\s*(?:(\d+)[\'′]\s*)?(?:([\d.]+)["″]\s*)?([NSEWO])?$/;
	matches = regex.exec(string);
	if(matches) {
		degrees = matches[2] ? parseFloat(matches[2]) : 0;
		minutes = (matches[3]) ? parseFloat(matches[3]) : 0;
		seconds = (matches[4]) ? parseFloat(matches[4]) : 0;
		negative = (matches[5]) && (matches[5] == 'S' || (matches[5] == 'W' || matches[5] == 'O'));
		if (matches[1] == '-') {
		  negative = !negative;
		}
	    dd = (negative ? -1 : 1) * (degrees + (minutes/60) + (seconds/60/60));
	    return dd;
	}
	alert("Les coordonnées n'ont pas pu être converties en format décimal.\n Veuillez respecter le format +/- 47° 13' 05\" N/S/E/O");
	return '';
}