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<html>
<!--notification_tester.html
Script with javascript functions for creating and canceling notifications.
Also can be used to request permission for notifications.
-->
<script>

// Array of all notifications this page has created.
var g_notifications = [];
// Whether the site has requested and been granted permission.
var g_permissionGranted = false;

// Creates a notification with a iconUrl, title, text, and replaceId.
// Returns an id for the notification, which can be used to cancel it with
// |cancelNotification|. If two notifications are created with the same
// replaceId, the second one should replace the first.
function createNotification(iconUrl, title, text, replaceId) {
  try {
    var note = webkitNotifications.createNotification(iconUrl,
                                                      title,
                                                      text);
  } catch (exception)  {
    sendResultToTest(-1);
    return;
  }
  createNotificationHelper(note, replaceId, true);
}

// Cancels a notification with the given id. The notification must be showing,
// as opposed to waiting to be shown in the display queue.
// Returns '1' on success.
function cancelNotification(id) {
  if (id < 0 || id > g_notifications.length) {
    var errorMsg = "Attempted to cancel notification with invalid ID.\n" +
        "ID: " + id + "\n# of notifications: " + g_notifications.length;
    sendResultToTest(errorMsg);
  }
  g_notifications[id].onclose = function() {
    sendResultToTest(1);
  }
  g_notifications[id].cancel();
}

// Requests permission for this origin to create notifications.
function requestPermission() {
  window.webkitNotifications.requestPermission(onPermissionGranted);
  sendResultToTest(1);
}

// Waits for the permission to create notifications to be granted.
function waitForPermissionGranted() {
  if (g_permissionGranted) {
    sendResultToTest(1);
  } else {
    setTimeout(waitForPermissionGranted, 50);
  }
}

// Callback for requesting notification privileges.
function onPermissionGranted() {
  g_permissionGranted = true;
}

// Helper function that adds a notification to |g_notifications| and shows
// it. The index of the notification is sent back to the test, or -1 is sent
// back on error. If |waitForDisplay| is true, the response will not be sent
// until the notification is actually displayed.
function createNotificationHelper(note, replaceId, waitForDisplay) {
  function sendNotificationIdToTest() {
    sendResultToTest(g_notifications.length - 1);
  }
  g_notifications.push(note);
  note.replaceId = replaceId;
  if (waitForDisplay)
    note.ondisplay = sendNotificationIdToTest;
  note.onerror = function() {
    sendResultToTest(-1);
  }

  note.show();
  if (!waitForDisplay)
    sendNotificationIdToTest();
}

// Sends a result back to the main test logic.
function sendResultToTest(result) {
  // Convert the result to a string.
  var stringResult = "" + result;
  if (typeof stringResult != "string")
    stringResult = JSON.stringify(result);
  window.domAutomationController.send(stringResult);
}

</script>

<body>
This page is used for testing HTML5 notifications.
</body>
</html>