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+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html>
+<head>
+ <title>Indexed Database Test</title>
+
+ <script type="text/javascript">
+ function report(result) {
+ var message = { source: "iframe" };
+ message.result = result;
+ window.parent.postMessage(message, "*");
+ }
+
+ function runIndexedDBTest() {
+ var db = null;
+
+ // Create the data-store
+ function createDatastore() {
+ try {
+ var request = indexedDB.open(window.location.pathname, 1);
+ request.onupgradeneeded = function(event) {
+ event.target.result.createObjectStore("foo");
+ }
+ request.onsuccess = function(event) {
+ db = event.target.result;
+ createAndStoreBlob();
+ }
+ }
+ catch (e) {
+dump("EXCEPTION IN CREATION: " + e + "\n " + e.stack + "\n");
+ report(false);
+ }
+ }
+
+ function createAndStoreBlob() {
+ const BLOB_DATA = ["fun ", "times ", "all ", "around!"];
+ var blob = new Blob(BLOB_DATA, { type: "text/plain" });
+ var objectStore = db.transaction("foo", "readwrite").objectStore("foo");
+ objectStore.add({ blob: blob }, 42).onsuccess = refetchBlob;
+ }
+
+ function refetchBlob() {
+ var foo = db.transaction("foo").objectStore("foo");
+ foo.get(42).onsuccess = fetchedBlobCreateWorkerAndSendBlob;
+ }
+
+ function fetchedBlobCreateWorkerAndSendBlob(event) {
+ var idbBlob = event.target.result.blob;
+ var compositeBlob = new Blob(['I like the following blob: ', idbBlob],
+ { type: "text/fancy" });
+
+ function workerScript() {
+ onmessage = function(event) {
+ // Save the Blob to the worker's global scope.
+ self.holdOntoBlob = event.data;
+ // Send any message so we can serialize and keep our runtime behaviour
+ // consistent.
+ postMessage('kung fu death grip established');
+ }
+ }
+
+ var url =
+ URL.createObjectURL(new Blob(["(", workerScript.toSource(), ")()"]));
+
+ // Keep a reference to the worker on the window.
+ var worker = window.worker = new Worker(url);
+ worker.postMessage(compositeBlob);
+ worker.onmessage = workerLatchedBlobDeleteFromDB;
+ }
+
+ function workerLatchedBlobDeleteFromDB() {
+ // Delete the reference to the Blob from the database leaving the worker
+ // thread reference as the only live reference once a GC has cleaned
+ // out our references that we sent to the worker. The page that owns
+ // us triggers a GC just for that reason.
+ var objectStore = db.transaction("foo", "readwrite").objectStore("foo");
+ objectStore.delete(42).onsuccess = closeDBTellOwningThread;
+ }
+
+ function closeDBTellOwningThread(event) {
+ // Now that worker has latched the blob, clean up the database.
+ db.close();
+ db = null;
+ report('ready');
+ }
+
+ createDatastore();
+ }
+ </script>
+
+</head>
+
+<body onload="runIndexedDBTest();">
+</body>
+
+</html>