Initial commit

lib/assets/javascripts/builder/data/custom-baselayer-model.js

@@ -0,0 +1,66 @@
+/* global Image */
+
+var Backbone = require('backbone');
+var _ = require('underscore');
+
+module.exports = Backbone.Model.extend({
+
+  getAttributes: function () {
+    return JSON.parse(JSON.stringify(this.attributes));
+  },
+
+  _generateClassName: function (urlTemplate) {
+    if (urlTemplate) {
+      return urlTemplate.replace(/\s+/g, '').replace(/[^a-zA-Z_0-9 ]/g, '').toLowerCase();
+    } else return '';
+  },
+
+  parse: function (data) {
+    var attrs = {};
+
+    _.extend(attrs, data.options, {
+      id: data.id,
+      className: this._generateClassName(data.options.urlTemplate),
+      type: 'Tiled',
+      order: data.order,
+      parent_id: data.parent_id
+    });
+
+    return attrs;
+  },
+
+  toJSON: function () {
+    var layerOptions = _.clone(_.omit(this.attributes, ['order', 'id']));
+    var json = {
+      kind: 'tiled',
+      options: layerOptions,
+      order: this.get('order'),
+      id: this.id
+    };
+
+    return json;
+  },
+
+  getValue: function () {
+    return this.get('val');
+  },
+
+  /**
+   * validateTemplateURL - Validates current urlTemplate of layer.
+   *
+   * @param {Object} callbacks with success and error functions defined to be called depending on validation outcome.
+   */
+  validateTemplateURL: function (callbacks) {
+    var subdomains = ['a', 'b', 'c'];
+    var image = new Image();
+    image.onload = callbacks.success;
+    image.onerror = callbacks.error;
+    image.src = this.get('urlTemplate').replace(/\{s\}/g, function () {
+      return subdomains[Math.floor(Math.random() * 3)];
+    })
+      .replace(/\{x\}/g, '0')
+      .replace(/\{y\}/g, '0')
+      .replace(/\{z\}/g, '0');
+  }
+
+});