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gaia/tv_apps/fling-tutorial/js/index.js

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+/* global FTEWizard */
+(function (exports) {
+'use strict';
+
+window.addEventListener('load', function() {
+  var offlineContent = document.querySelector('#offline-content');
+  var mozIframe = document.querySelector('#moz-iframe[mozbrowser]');
+
+  if (navigator.onLine) {
+    mozIframe.classList.remove('hidden');
+
+    mozIframe.addEventListener('mozbrowserloadend', () => {
+      mozIframe.focus();
+    });
+
+    // The call of window.close by content inside iframe(even with mozbrowser)
+    // is not allowed and does't not trigger the mozbrowserclose event.
+    // As a result, we use the mozbrowserlocationchange event to observe
+    // when user finishes the tutorial.
+    mozIframe.addEventListener('mozbrowserlocationchange', (e) => {
+      if (e.detail === mozIframe.src + '#finished') {
+        window.close();
+      }
+    });
+
+    // The mozbrowserclose event would be trrigered when content inside iframe
+    // is crashed. When crashed, let's just leave this app.
+    mozIframe.addEventListener('mozbrowserclose', () => {
+      window.close();
+    });
+
+    mozIframe.src = 'https://casttv.services.mozilla.com';
+  } else {
+
+    offlineContent.classList.remove('hidden');
+
+    var tutorial = new FTEWizard('flingTutorial');
+    tutorial.init({
+      container: offlineContent,
+      pageClass: 'slide',
+      buttonsClass: 'slide-button',
+      launchEveryTime: true,
+      onfinish: function () {
+        window.close();
+      }.bind(tutorial)
+    });
+  }
+});
+
+})(window);