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      1 // Copyright 2012 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 /**
      6  * Javascript for user_actions.html, served from chrome://user-actions/
      7  * This is used to debug user actions recording. It displays a live
      8  * stream of all user action events that occur in chromium while the
      9  * chrome://user-actions/ page is open.
     10  *
     11  * The simple object defined in this javascript file listens for
     12  * callbacks from the C++ code saying that a new user action was seen.
     13  */
     14 
     15 cr.define('userActions', function() {
     16   'user strict';
     17 
     18   /**
     19    * Appends a row to the output table listing the user action observed
     20    * and the current timestamp.
     21    * @param {string} userAction the name of the user action observed.
     22    */
     23   function observeUserAction(userAction) {
     24     var table = $('user-actions-table');
     25     var tr = document.createElement('tr');
     26     var td = document.createElement('td');
     27     td.textContent = userAction;
     28     tr.appendChild(td);
     29     td = document.createElement('td');
     30     td.textContent = Date.now() / 1000;  // in seconds since epoch
     31     tr.appendChild(td);
     32     table.appendChild(tr);
     33   }
     34 
     35   return {
     36     observeUserAction: observeUserAction
     37   };
     38 });
     39