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gaia/apps/ftu/js/services_launcher.js

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+/* global utils */
+/* exported ServicesLauncher */
+'use strict';
+
+var FTU_APP_ORIGIN = document.location.protocol + '//' +
+    document.location.host;
+
+var ServicesLauncher = (function(document) {
+    var extensionFrame = document.querySelector('#iframe_extensions');
+    var oauthFrame = document.querySelector('#iframe_oauth');
+
+    var BASE_IMPORT = '/shared/pages/import/import.html?ftu=1';
+    function getServiceURI(service) {
+      return BASE_IMPORT + '&service=' + service;
+    }
+
+    var access_token, currentURI, currentService;
+
+
+    function open() {
+      extensionFrame.className = 'opening';
+    }
+
+    function load(targetService) {
+      currentService = targetService;
+      currentURI = getServiceURI(targetService);
+
+      window.addEventListener('message', messageHandler);
+      oauthFrame.contentWindow.postMessage({
+        type: 'start',
+        data: {
+          from: 'friends',
+          service: targetService
+        }
+      }, FTU_APP_ORIGIN);
+    }
+
+    function unload() {
+      window.removeEventListener('message', messageHandler);
+      extensionFrame.src = null;
+    }
+
+    function close(messageId) {
+      extensionFrame.addEventListener('transitionend', function tclose() {
+        extensionFrame.removeEventListener('transitionend', tclose);
+        extensionFrame.src = null;
+        if (messageId) {
+          utils.status.show(messageId);
+        }
+      });
+      extensionFrame.className = 'closing';
+      window.removeEventListener('message', messageHandler);
+    }
+
+
+    // This function can also be executed when other messages arrive
+    // That's why we cannot call notifySettings outside the switch block
+    function messageHandler(e) {
+      if (e.origin !== FTU_APP_ORIGIN) {
+        return;
+      }
+      var data = e.data;
+
+      switch (data.type) {
+        case 'ready':
+          open();
+          break;
+
+        case 'abort':
+          unload();
+          break;
+
+        case 'window_close':
+          close(data.messageId);
+          break;
+
+        case 'authenticated':
+          extensionFrame.src = currentURI;
+          access_token = data.data;
+          break;
+
+        case 'messaging_ready':
+          extensionFrame.contentWindow.postMessage({
+            type: 'token',
+            data: access_token
+          }, FTU_APP_ORIGIN);
+          break;
+      }
+    }
+
+    return {
+      start: load
+    };
+
+  })(document);