1 // Copyright (c) 2013 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.
7 * Maintains the stats table.
8 * @param {SsrcInfoManager} ssrcInfoManager The source of the ssrc info.
10 var StatsTable = (function(ssrcInfoManager) {
14 * @param {SsrcInfoManager} ssrcInfoManager The source of the ssrc info.
17 function StatsTable(ssrcInfoManager) {
19 * @type {SsrcInfoManager}
22 this.ssrcInfoManager_ = ssrcInfoManager;
25 StatsTable.prototype = {
27 * Adds |report| to the stats table of |peerConnectionElement|.
29 * @param {!Element} peerConnectionElement The root element.
30 * @param {!Object} report The object containing stats, which is the object
31 * containing timestamp and values, which is an array of strings, whose
32 * even index entry is the name of the stat, and the odd index entry is
35 addStatsReport: function(peerConnectionElement, report) {
36 var statsTable = this.ensureStatsTable_(peerConnectionElement, report);
39 this.addStatsToTable_(statsTable,
40 report.stats.timestamp, report.stats.values);
45 * Ensure the DIV container for the stats tables is created as a child of
46 * |peerConnectionElement|.
48 * @param {!Element} peerConnectionElement The root element.
49 * @return {!Element} The stats table container.
52 ensureStatsTableContainer_: function(peerConnectionElement) {
53 var containerId = peerConnectionElement.id + '-table-container';
54 var container = $(containerId);
56 container = document.createElement('div');
57 container.id = containerId;
58 container.className = 'stats-table-container';
59 peerConnectionElement.appendChild(container);
65 * Ensure the stats table for track specified by |report| of PeerConnection
66 * |peerConnectionElement| is created.
68 * @param {!Element} peerConnectionElement The root element.
69 * @param {!Object} report The object containing stats, which is the object
70 * containing timestamp and values, which is an array of strings, whose
71 * even index entry is the name of the stat, and the odd index entry is
73 * @return {!Element} The stats table element.
76 ensureStatsTable_: function(peerConnectionElement, report) {
77 var tableId = peerConnectionElement.id + '-table-' + report.id;
78 var table = $(tableId);
80 var container = this.ensureStatsTableContainer_(peerConnectionElement);
81 table = document.createElement('table');
82 container.appendChild(table);
86 table.innerHTML = '<tr><th colspan=2></th></tr>';
87 table.rows[0].cells[0].textContent = 'Statistics ' + report.id;
88 if (report.type == 'ssrc') {
90 table.rows[1].innerHTML = '<td colspan=2></td>';
91 this.ssrcInfoManager_.populateSsrcInfo(
92 table.rows[1].cells[0], GetSsrcFromReport(report));
99 * Update |statsTable| with |time| and |statsData|.
101 * @param {!Element} statsTable Which table to update.
102 * @param {number} time The number of miliseconds since epoch.
103 * @param {Array.<string>} statsData An array of stats name and value pairs.
106 addStatsToTable_: function(statsTable, time, statsData) {
107 var date = Date(time);
108 this.updateStatsTableRow_(statsTable, 'timestamp', date.toLocaleString());
109 for (var i = 0; i < statsData.length - 1; i = i + 2) {
110 this.updateStatsTableRow_(statsTable, statsData[i], statsData[i + 1]);
115 * Update the value column of the stats row of |rowName| to |value|.
116 * A new row is created is this is the first report of this stats.
118 * @param {!Element} statsTable Which table to update.
119 * @param {string} rowName The name of the row to update.
120 * @param {string} value The new value to set.
123 updateStatsTableRow_: function(statsTable, rowName, value) {
124 var trId = statsTable.id + '-' + rowName;
125 var trElement = $(trId);
127 trElement = document.createElement('tr');
129 statsTable.firstChild.appendChild(trElement);
130 trElement.innerHTML = '<td>' + rowName + '</td><td></td>';
132 trElement.cells[1].textContent = value;