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assets/webapps/test-startup-limit.gaiamobile.org/js/worker.js

@@ -0,0 +1,40 @@
+var db;
+
+var getCount = new Promise(resolve => {
+  console.log('Will open indexedDB');
+  var request = indexedDB.open('counter');
+
+  request.onupgradeneeded = event => {
+    console.log('Populating indexedDB');
+    db = event.target.result;
+    var store = db.createObjectStore('count');
+    store.add(0, 'count');
+  };
+
+  request.onsuccess = () => {
+    console.log('Reading count from indexedDB');
+    db = request.result;
+    var transaction = db.transaction(['count'], 'readonly');
+    var store = transaction.objectStore('count');
+    var get = store.get('count');
+    get.onsuccess = () => resolve(get.result);
+  };
+});
+
+function setCount(count) {
+  var transaction = db.transaction(['count'], 'readwrite');
+  var store = transaction.objectStore('count');
+  store.put(count, 'count');
+}
+
+self.onmessage = event => {
+  console.log(`Will call ${event.data.method}`);
+  switch (event.data.method) {
+    case 'getCount':
+      getCount.then(postMessage);
+      break;
+    case 'setCount':
+      setCount(event.data.params[0]);
+      break;
+  }
+}