Initial commit

app/scripts/libs/maps.js

@@ -0,0 +1,120 @@
+'use strict';
+
+define([
+  'require',
+  'jquery',
+  'lodash',
+  'backbone'
+], function (require, $, _, Backbone) {
+  var gmaps;
+
+  function glatlng(latlng) {
+    if (_.isArray(latlng)) {
+      return new gmaps.LatLng(latlng[0], latlng[1]);
+    } else if (latlng instanceof Backbone.Model) {
+      return new gmaps.LatLng(latlng.get('lat'), latlng.get('long'));
+    } else {
+      return new gmaps.LatLng(latlng.lat, latlng.long);
+    }
+  }
+
+  var maps = {};
+
+  var deferred = $.Deferred();
+
+  var i = 0;
+  var Map = function (el, opts) {
+    var num = i;
+    deferred.done(function () {
+      maps[num] = new gmaps.Map(el, {
+          center: glatlng([0, 0]),
+          mapTypeId: gmaps.MapTypeId.ROADMAP,
+          zoom: 0,
+          streetViewControl: false,
+          mapTypeControl: false,
+          draggable: false,
+          scrollwheel: false,
+          zoomControl: false
+      });
+    });
+
+    return {
+      id: i++
+    }
+  };
+
+  var Line = function (attr) {
+    var data;
+    deferred.done(function () {
+      attr = attr || {};
+      attr.map = maps[attr.map.id];
+
+      data = new gmaps.Polyline(attr);
+    });
+
+    return {
+      clear: function () {
+        deferred.done(function () {
+          data.setPath([]);
+        });
+      },
+      add: function (latlng) {
+        deferred.done(function () {
+          data.getPath().push(glatlng(latlng));
+        });
+      }
+    };
+  };
+
+  var Bounds = function (map) {
+    var map;
+    var i;
+    var data;
+
+    var reset = function () {
+      i = 0;
+      map.setZoom(1);
+      map.setCenter(glatlng([0, 0]));
+    };
+
+    deferred.done(function () {
+      data = new gmaps.LatLngBounds();
+      map = maps[map.id];
+
+      reset();
+    });
+
+    return {
+      clear: function () {
+        deferred.done(function () {
+          reset();
+        });
+      },
+      add: function (latlng) {
+        deferred.done(function () {
+          data.extend(glatlng(latlng));
+          ++i;
+        });
+      },
+      use: function () {
+        deferred.done(function () {
+          if (i >= 2) {
+            map.fitBounds(data);
+          }
+        });
+      }
+    };
+  };
+
+  require(['libs/gmaps'], function (_gmaps) {
+    gmaps = _gmaps;
+    deferred.resolve();
+  });
+
+  return {
+    Map: Map,
+    Line: Line,
+    Bounds: Bounds
+  };
+
+});