// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

var TaskLog = (function() {
'use strict';

var nextTaskLogSeq = 1;
var TaskLog = {};

function observeTaskLog() {
  chrome.send('observeTaskLog');
}

/**
 * Handles per-task log event.
 * @param {Object} taskLog a dictionary containing 'duration',
 * 'task_description', 'result_description' and 'details'.
 */
TaskLog.onTaskLogRecorded = function(taskLog) {
  var details = document.createElement('td');
  details.classList.add('task-log-details');

  var label = document.createElement('label');
  details.appendChild(label);

  var collapseCheck = document.createElement('input');
  collapseCheck.setAttribute('type', 'checkbox');
  collapseCheck.classList.add('task-log-collapse-check');
  label.appendChild(collapseCheck);

  var ul = document.createElement('ul');
  for (var i = 0; i < taskLog.details.length; ++i)
    ul.appendChild(createElementFromText('li', taskLog.details[i]));
  label.appendChild(ul);

  var tr = document.createElement('tr');
  tr.appendChild(createElementFromText(
      'td', taskLog.duration, {'class': 'task-log-duration'}));
  tr.appendChild(createElementFromText(
      'td', taskLog.task_description, {'class': 'task-log-description'}));
  tr.appendChild(createElementFromText(
      'td', taskLog.result_description, {'class': 'task-log-result'}));
  tr.appendChild(details);

  $('task-log-entries').appendChild(tr);
}

/**
 * Get initial sync service values and set listeners to get updated values.
 */
function main() {
  observeTaskLog();
}

document.addEventListener('DOMContentLoaded', main);
return TaskLog;
})();