getBoundaryData

map-manager.js

  // private functions 

  // ...

  var getBoundaryData = function(tiles) {

    var noOfTiles = tiles.length;

    // nothing to do.
    if(noOfTiles == 0) {
      $(self).trigger('boundaryDataRetrieved');
    }

    var tilesRetrieved = 0;

    $.each(tiles, function(idx, tile) {
      var lat = tile[0][0].toString();
      var lng = tile[0][1].toString();
      $.ajax(
        'http://opendatacommunities.org/lsoa_tiles/lat' + lat + '/long' + lng + '.json',
        {
          success: function(data, textStatus, jqXHR) {
            for (var lsoaNotation in data) {
              setBoundaryData(tile, lsoaNotation, data[lsoaNotation]);
            }
            tilesRetrieved+=1;
            if (tilesRetrieved == tiles.length) {
              // we've got all the boundaries.
              $(self).trigger('boundaryDataRetrieved');
            }
          },
          error: function(jqXHR, textStatus, errorThrown) {
            window.swirrl.log("GET BOUNDARY TILE FAILURE: " + errorThrown);
            $(self).trigger('dataError');
          },
          timeout: 10000,
          dataType: 'json'
        }
      )
    });
  };