Main closure

map-html.js

(function(){
  var mapManager
    , idleListener = null
    , startTime
    , map = new google.maps.Map(document.getElementById("map_canvas"), {
        zoom: 14,
        center: new google.maps.LatLng(53.48, -2.245), // Manchester
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        streetViewControl: false
      });

  // initialize with the overall score.
  var mapManager = new swirrl.MapManager(map, "IMD-score"); 

  // Handle events coming out of the Map Manager.
  $(mapManager).bind('started', function() {
    startTime = new Date();
    if(idleListener) {
      google.maps.event.removeListener(idleListener);
      idleListener = null;
    }
    $("#busy_notice").show();
  });

  $(mapManager).bind('finished', function() {
    window.swirrl.log('busy duration: ' + (new Date() - startTime) + ' ms');
    $("#busy_notice").hide();
    bindMapIdle();
  });

  // show warning if zoom too wide
  $(mapManager).bind('zoomTooWide', function() {
    if (!$("#zoom_warning").is(":visible")) {
      $("#zoom_warning").show();
    }
  });

  // hide warning if zoom oK
  $(mapManager).bind('zoomOK', function() {
    if ($("#zoom_warning").is(":visible")) {
      $("#zoom_warning").hide();
    }
  });

  // function to wire up the idleListener
  var bindMapIdle = function() {
    // if we don't already have an idle-listener, bind one up.
    // (fires when the map bounds haven't changed for a bit)
    if (!idleListener) {
      idleListener = google.maps.event.addListener(map, 'idle', function(e) {
        window.swirrl.log('refreshing map');
        mapManager.refresh();
      });
    }
  }

  // Finally, start listening to Map-Idle events.
  bindMapIdle();
})();