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// Copyright (c) 2013 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.
/**
* Maintains the stats table.
* @param {SsrcInfoManager} ssrcInfoManager The source of the ssrc info.
*/
var StatsTable = (function(ssrcInfoManager) {
'use strict';
/**
* @param {SsrcInfoManager} ssrcInfoManager The source of the ssrc info.
* @constructor
*/
function StatsTable(ssrcInfoManager) {
/**
* @type {SsrcInfoManager}
* @private
*/
this.ssrcInfoManager_ = ssrcInfoManager;
}
StatsTable.prototype = {
/**
* Adds |report| to the stats table of |peerConnectionElement|.
*
* @param {!Element} peerConnectionElement The root element.
* @param {!Object} report The object containing stats, which is the object
* containing timestamp and values, which is an array of strings, whose
* even index entry is the name of the stat, and the odd index entry is
* the value.
*/
addStatsReport: function(peerConnectionElement, report) {
var statsTable = this.ensureStatsTable_(peerConnectionElement, report);
if (report.stats) {
this.addStatsToTable_(statsTable,
report.stats.timestamp, report.stats.values);
}
},
/**
* Ensure the DIV container for the stats tables is created as a child of
* |peerConnectionElement|.
*
* @param {!Element} peerConnectionElement The root element.
* @return {!Element} The stats table container.
* @private
*/
ensureStatsTableContainer_: function(peerConnectionElement) {
var containerId = peerConnectionElement.id + '-table-container';
var container = $(containerId);
if (!container) {
container = document.createElement('div');
container.id = containerId;
container.className = 'stats-table-container';
var head = document.createElement('div');
head.textContent = 'Stats Tables';
container.appendChild(head);
peerConnectionElement.appendChild(container);
}
return container;
},
/**
* Ensure the stats table for track specified by |report| of PeerConnection
* |peerConnectionElement| is created.
*
* @param {!Element} peerConnectionElement The root element.
* @param {!Object} report The object containing stats, which is the object
* containing timestamp and values, which is an array of strings, whose
* even index entry is the name of the stat, and the odd index entry is
* the value.
* @return {!Element} The stats table element.
* @private
*/
ensureStatsTable_: function(peerConnectionElement, report) {
var tableId = peerConnectionElement.id + '-table-' + report.id;
var table = $(tableId);
if (!table) {
var container = this.ensureStatsTableContainer_(peerConnectionElement);
var details = document.createElement('details');
container.appendChild(details);
var summary = document.createElement('summary');
summary.textContent = report.id;
details.appendChild(summary);
table = document.createElement('table');
details.appendChild(table);
table.id = tableId;
table.border = 1;
table.innerHTML = '<tr><th colspan=2></th></tr>';
table.rows[0].cells[0].textContent = 'Statistics ' + report.id;
if (report.type == 'ssrc') {
table.insertRow(1);
table.rows[1].innerHTML = '<td colspan=2></td>';
this.ssrcInfoManager_.populateSsrcInfo(
table.rows[1].cells[0], GetSsrcFromReport(report));
}
}
return table;
},
/**
* Update |statsTable| with |time| and |statsData|.
*
* @param {!Element} statsTable Which table to update.
* @param {number} time The number of miliseconds since epoch.
* @param {Array.<string>} statsData An array of stats name and value pairs.
* @private
*/
addStatsToTable_: function(statsTable, time, statsData) {
var date = new Date(time);
this.updateStatsTableRow_(statsTable, 'timestamp', date.toLocaleString());
for (var i = 0; i < statsData.length - 1; i = i + 2) {
this.updateStatsTableRow_(statsTable, statsData[i], statsData[i + 1]);
}
},
/**
* Update the value column of the stats row of |rowName| to |value|.
* A new row is created is this is the first report of this stats.
*
* @param {!Element} statsTable Which table to update.
* @param {string} rowName The name of the row to update.
* @param {string} value The new value to set.
* @private
*/
updateStatsTableRow_: function(statsTable, rowName, value) {
var trId = statsTable.id + '-' + rowName;
var trElement = $(trId);
if (!trElement) {
trElement = document.createElement('tr');
trElement.id = trId;
statsTable.firstChild.appendChild(trElement);
trElement.innerHTML = '<td>' + rowName + '</td><td></td>';
}
trElement.cells[1].textContent = value;
// Highlights the table for the active connection.
if (rowName == 'googActiveConnection' && value == 'true')
statsTable.parentElement.classList.add('stats-table-active-connection');
}
};
return StatsTable;
})();
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