Initial commit

2020-06-15 10:58:47 +08:00
commit 4f1dfe7564
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+var _ = require('underscore');
+var Backbone = require('backbone');
+var moment = require('moment');
+var NASAView = require('./nasa-view');
+var CustomBaselayerModel = require('builder/data/custom-baselayer-model');
+
+var TYPES = {
+  day: {
+    url: 'http://map1.vis.earthdata.nasa.gov/wmts-webmerc/MODIS_Terra_CorrectedReflectance_TrueColor/default/<%- date %>/GoogleMapsCompatible_Level9/{z}/{y}/{x}.jpeg',
+    limit: '2012-05-01',
+    default: '2012-05-01',
+    attribution: '<a href="http://earthdata.nasa.gov/gibs" target="_blank">NASA EOSDIS GIBS</a>',
+    name: 'NASA Terra',
+    maxZoom: 9,
+    minZoom: 1
+  },
+  night: {
+    url: 'http://map1.vis.earthdata.nasa.gov/wmts-webmerc/VIIRS_CityLights_2012/default/<%- date %>/GoogleMapsCompatible_Level8/{z}/{y}/{x}.jpeg',
+    limit: '2012-05-01',
+    default: '2012-05-02',
+    attribution: '<a href="http://earthdata.nasa.gov/gibs" target="_blank">NASA EOSDIS GIBS</a>',
+    name: 'NASA Earth at night',
+    maxZoom: 8,
+    minZoom: 1
+  }
+};
+
+/**
+ * View model for NASA tab content.
+ */
+
+module.exports = Backbone.Model.extend({
+
+  defaults: {
+    name: 'nasa',
+    label: 'NASA',
+    layer: undefined, // gets set on dayOrNight/date changes
+    layerType: 'day',
+    date: undefined, // for date picker
+    current: undefined,
+    format: 'Y-m-d' // YYYY-MM-DD
+  },
+
+  initialize: function () {
+    this._initBinds();
+  },
+
+  createView: function (opts) {
+    if (!opts.submitButton) throw new Error('submitButton is required');
+
+    this._submitButton = opts.submitButton;
+
+    var utc = new Date().getTimezoneOffset();
+    var today = moment(new Date()).utcOffset(utc).format('YYYY-MM-DD');
+    var yesterday = moment(new Date()).utcOffset(utc).subtract(1, 'days').format('YYYY-MM-DD');
+
+    this.set({
+      current: today,
+      date: yesterday
+    });
+
+    return new NASAView({
+      model: this,
+      submitButton: this._submitButton
+    });
+  },
+
+  hasAlreadyAddedLayer: function (userLayers) {
+    var urlTemplate = this.get('layer').get('urlTemplate');
+    return _.any(userLayers.isCustomCategory(), function (customLayer) {
+      return customLayer.get('urlTemplate') === urlTemplate;
+    });
+  },
+
+  _initBinds: function () {
+    this.bind('change:date change:layerType', this._onChange, this);
+  },
+
+  _onChange: function () {
+    var dateStr = this.get('date');
+    var layerType = this.get('layerType');
+
+    var url = _.template(TYPES[layerType].url)({
+      date: dateStr
+    });
+
+    var name = TYPES[layerType].name;
+
+    if (layerType === 'day') {
+      name = name + ' ' + dateStr;
+    }
+
+    var layer = new CustomBaselayerModel({
+      urlTemplate: url,
+      attribution: TYPES[layerType].attribution,
+      maxZoom: TYPES[layerType].maxZoom,
+      minZoom: TYPES[layerType].minZoom,
+      name: name,
+      category: 'NASA',
+      type: 'Tiled'
+    });
+    layer.set('className', layer._generateClassName(url));
+
+    this.set('layer', layer);
+  }
+
+});