var map;
var geocoder;

function load() {
  if (GBrowserIsCompatible()) {
    geocoder = new GClientGeocoder();
    map = new GMap2(document.getElementById('map'));
    map.addControl(new GSmallMapControl());
    map.addControl(new GMapTypeControl());
    map.setCenter(new GLatLng(46.051426, 14.505965), 8);
  }
}

function searchLocations() {
 var address = document.getElementById('addressInput').value;
 geocoder.getLatLng(address, function(latlng) {
   if (!latlng) {
     alert(address + ': 0 rezultatov');
   } else {
     searchLocationsNear(latlng);
   }
 });
}

function searchLocationsNear(center) {
 var radius = document.getElementById('radiusSelect').value;
 var type = document.getElementById('tip').value;
 var searchUrl = 'koordinate.php?lat=' + center.lat() + '&lng=' + center.lng() + '&radius=' + radius + '&type=' + type;
 GDownloadUrl(searchUrl, function(data) {
   var xml = GXml.parse(data);
   var markers = xml.documentElement.getElementsByTagName('marker');
   map.clearOverlays();

   var sidebar = document.getElementById('sidebar');
   sidebar.innerHTML = '';
   if (markers.length == 0) {
     sidebar.innerHTML = 'No results found.';
     map.setCenter(new GLatLng(40, -100), 4);
     return;
   }

   var bounds = new GLatLngBounds();
   for (var i = 0; i < markers.length; i++) {
     var name = markers[i].getAttribute('name');
     var address = markers[i].getAttribute('address');
     var url = markers[i].getAttribute('url');
     var distance = parseFloat(markers[i].getAttribute('distance'));
     var point = new GLatLng(parseFloat(markers[i].getAttribute('lat')),
                             parseFloat(markers[i].getAttribute('lng')));
     
     var marker = createMarker(point, name, address, url);
     map.addOverlay(marker);
     var sidebarEntry = createSidebarEntry(marker, name, address, distance, url);
     sidebar.appendChild(sidebarEntry);
     bounds.extend(point);
   }
   map.setCenter(bounds.getCenter(), map.getBoundsZoomLevel(bounds));
 });
}

function createMarker(point, name, address, url) {
  var marker = new GMarker(point);
  var html = '<b>' + name + '</b> <br/>' + address + '<br/><br/>' + url;
  GEvent.addListener(marker, 'click', function() {
    marker.openInfoWindowHtml(html);
  });
  return marker;
}

function createSidebarEntry(marker, name, address, distance) {
  var div = document.createElement('div');
  var html = '<b>' + name + '</b> (' + distance.toFixed(1) + 'km)<br/>' + address;
  div.innerHTML = html;
  div.style.cursor = 'pointer';
  div.style.marginBottom = '5px'; 
  GEvent.addDomListener(div, 'click', function() {
    GEvent.trigger(marker, 'click');
  });
  GEvent.addDomListener(div, 'mouseover', function() {
    div.style.backgroundColor = '#eee';
  });
  GEvent.addDomListener(div, 'mouseout', function() {
    div.style.backgroundColor = '#fff';
  });
  return div;
}