AgileVentures/LocalSupport

View on GitHub
app/assets/javascripts/maps.js

Summary

Maintainability
A
2 hrs
Test Coverage
//= require google-infobox/google-infobox
//= require google_maps/custom_marker

var map;
var openedInfoBox = null;
var markers = [];
var Settings = {
  id: 'map-canvas'
};

var OrganisationMap = {
  initMap: function initMap() {
    Settings.zoom = parseInt($("#marker_data").data().zoom || '12', 10)
    Settings.lat = parseFloat($("#marker_data").data().latitude || '51.5978')
    Settings.lng = parseFloat($("#marker_data").data().longitude || '-0.3370')
    Settings.geojsonUrl1 = $("#marker_data").data().geojsonUrl1 
    Settings.geojsonUrl2 = $("#marker_data").data().geojsonUrl2
    map = new google.maps.Map(document.getElementById(Settings.id), {
      center: {lat: Settings.lat, lng: Settings.lng},
      zoom: Settings.zoom
    });

    // jQuery.getJSON( "/assets/topo_E09000033.json", function( data ) {
    //   geoJsonObject = topojson.feature(data, data.objects.E09000033)
    //   map.data.addGeoJson(geoJsonObject); 
    // });

    // to convert topo to geo locally can do the following in node
    // const topo = require('topojson')
    // const fs = require('fs')
    // var topo = fs.readFileSync("./app/assets/javascripts/topo_E09000033.json");
    // var topoContent = JSON.parse(topo);
    // geoJsonObject = topojson.feature(topoContent, topoContent.objects.E09000033)
    // fs.writeFileSync("./app/assets/javascripts/geo_topo_E09000033.json", JSON.stringify(geoJsonObject))
    if(Settings.geojsonUrl1){
      map.data.loadGeoJson(Settings.geojsonUrl1); 
      map.data.loadGeoJson(Settings.geojsonUrl2); 

      map.data.setStyle(function(feature) {
        var color = feature.getProperty('color') || '#A9CE9C';
        return {
          fillOpacity: 0.75,
          fillColor: color,
          strokeWeight: 1
        }
      });

      // Set mouseover event for each feature.
      map.data.addListener('mousedown', function(event) {
        console.log(event.feature.getProperty('LSOA11CD'))
      });
    }

    var markerData = $("#marker_data").data().markers

    var marker

    var ib = new InfoBox();
    var ibOptions = {
      pixelOffset: new google.maps.Size(-140, 10)
    };

    var boxText = document.createElement("div");
    boxText.setAttribute("class", "arrow_box")
    ibOptions.content = boxText;

    markerData.forEach(function(item) {
      var latLng = new google.maps.LatLng(item.lat, item.lng);

      marker = new CustomMarker(
        latLng,
        map,
        {
          content: item.custom_marker
        }
      );

      google.maps.event.addListener(marker, 'click', function() {
        openedInfoBox = ib;
        ib.setOptions(ibOptions);
        boxText.innerHTML = item.infowindow;
        $(ib.content_).find('.close').click(function(){
          ib.close();
          openedInfoBox = null;
        });
        ib.open(map, this);
        map.panTo(ib.getPosition());
      });

      markers.push(marker);
    });
  },
  centerMap: function centerMap(coordinates) {
    map.setCenter({ lat: coordinates['lat'], lng: coordinates['lng'] });
  },
  closeInfoBox: function closeInfoBox() {
    if (openedInfoBox !== null)
      openedInfoBox.close();
  },
  getVolOpCoordinates: function getVolOpCoordinates (volop) {
    return {
      lat: parseFloat($(volop).attr('data-lat')),
      lng: parseFloat($(volop).attr('data-lng'))
    };
  },
  openInfoBox: function openInfoBox(coordinates) {
    $.each(markers, function(key, value) {
      if (value.latlng.lat().toFixed(6) === coordinates['lat'].toFixed(6)
          && value.latlng.lng().toFixed(6) === coordinates['lng'].toFixed(6))
        google.maps.event.trigger(value, 'click');
    });
  },
  updateInfoBox: function updateInfoBox(volop) {
    if ($(volop).attr('data-lat') !== '' && $(volop).attr('data-lng') !== '') {
      var coordinates = this.getVolOpCoordinates(volop);
      this.centerMap(coordinates);
      this.openInfoBox(coordinates);
    }
  },
  init: function init() {
    if (($('#content').height() - 14) >= 400) {
      $('#map-canvas').height($('#content').height() - 14);
    }

      // _.debounce(function() {
      // }, 300)
    $('.center-map-on-op').mouseenter(function() {
      OrganisationMap.updateInfoBox(this);
    })
    .mouseleave(function() {
      OrganisationMap.closeInfoBox();
    });
  }
}

google.maps.event.addDomListener(window, "load", OrganisationMap.initMap);

var debouceOpenInfoBox = _.debounce(function(volop) {
    if ($(volop).attr('data-lat') !== '' && $(volop).attr('data-lng') !== '') {
      centerMap(getVolOpCoordinates(volop));
      openInfoBox(getVolOpCoordinates(volop));
     }
}, 300);

$(document).ready(function() {
  OrganisationMap.init();
});