chrome/browser/resources/about_invalidations.js

   1 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 cr.define('chrome.invalidations', function() {
   6
   7   function quote(str) {
   8     return '\"' + str + '\"';
   9   }
  10
  11   function nowTimeString() {
  12     return '[' + new Date().getTime() + '] ';
  13   }
  14
  15   /**
  16    * Appends a string to a textarea log.
  17    *
  18    * @param {string} logMessage The string to be appended.
  19    */
  20   function appendToLog(logMessage) {
  21     var invalidationsLog = $('invalidations-log');
  22     invalidationsLog.value += logMessage + '\n';
  23   }
  24
  25   /**
  26    * Shows the current state of the InvalidatorService
  27    *
  28    * @param {string} newState The string to be displayed and logged.
  29    */
  30   function updateState(newState) {
  31     var logMessage = nowTimeString() +
  32       'Invalidations service state changed to ' + quote(newState);
  33
  34     appendToLog(logMessage);
  35     $('invalidations-state').textContent = newState;
  36     currentInvalidationState = newState;
  37   }
  38
  39   /**
  40    * Adds to the log the latest invalidations received
  41    *
  42    * @param {Array of Object} allInvalidations The array of ObjectId
  43    * that contains the invalidations received by the InvalidatorService
  44    */
  45   function logInvalidations(allInvalidations) {
  46     for (var i = 0; i < allInvalidations.length; i++) {
  47       var inv = allInvalidations[i];
  48       if (inv.hasOwnProperty('objectId')) {
  49         var logMessage = nowTimeString() +
  50           'Received Invalidation with type ' +
  51           quote(inv.objectId.name) +
  52           ' version ' +
  53           quote((inv.isUnknownVersion ? 'Unknown' : inv.version)) +
  54           ' with payload ' +
  55           quote(inv.payload);
  56
  57         appendToLog(logMessage);
  58       }
  59     }
  60   }
  61
  62   /**
  63    * Function that notifies the Invalidator Logger that the UI is
  64    * ready to receive real-time notifications.
  65    */
  66   function onLoadWork() {
  67     chrome.send('doneLoading');
  68   }
  69
  70   return {
  71     updateState: updateState,
  72     logInvalidations: logInvalidations,
  73     onLoadWork: onLoadWork
  74   };
  75 });
  76
  77 document.addEventListener('DOMContentLoaded', chrome.invalidations.onLoadWork);