Add caching endpoint calls for term search

assets/js/src/newsletter_editor/components/wordpress.js

@@ -0,0 +1,63 @@
+define('newsletter_editor/components/wordpress', [
+    'newsletter_editor/App',
+    'backbone',
+    'backbone.marionette',
+    'mailpoet',
+    'ajax'
+  ], function(EditorApplication, Backbone, Marionette, MailPoet) {
+
+  EditorApplication.module("components.wordpress", function(Module, App, Backbone, Marionette, $, _) {
+    "use strict";
+
+    var postTypesCache,
+        taxonomiesCache = [],
+        termsCache = [];
+
+    Module.getPostTypes = function() {
+      if (!postTypesCache) {
+        postTypesCache = MailPoet.Ajax.post({
+          endpoint: 'wordpress',
+          action: 'getPostTypes',
+          data: {},
+        }).then(function(types) {
+          return _.values(types);
+        });
+      }
+
+      return postTypesCache;
+    };
+
+    Module.getTaxonomies = function(postType) {
+      if (!taxonomiesCache[postType]) {
+        taxonomiesCache[postType] = MailPoet.Ajax.post({
+          endpoint: 'wordpress',
+          action: 'getTaxonomies',
+          data: {
+            postType: postType,
+          },
+        });
+      }
+
+      return taxonomiesCache[postType];
+    };
+
+    Module.getTerms = function(taxonomies) {
+      if (!termsCache[taxonomies]) {
+        termsCache[taxonomies] = MailPoet.Ajax.post({
+          endpoint: 'wordpress',
+          action: 'getTerms',
+          data: {
+            taxonomies: taxonomies,
+          },
+        });
+      }
+
+      return termsCache[taxonomies];
+    };
+
+    App.on('start', function(options) {
+      // Prefetch post types
+      Module.getPostTypes();
+    });
+  });
+});

webpack.config.js

@@ -84,6 +84,7 @@ config.push(_.extend({}, baseConfig, {
       'newsletter_editor/components/content.js',
       'newsletter_editor/components/heading.js',
       'newsletter_editor/components/save.js',
+      'newsletter_editor/components/wordpress.js',
       'newsletter_editor/behaviors/BehaviorsLookup.js',
       'newsletter_editor/behaviors/ColorPickerBehavior.js',
       'newsletter_editor/behaviors/ContainerDropZoneBehavior.js',