strong-arc
Version:
A visual suite for the StrongLoop API Platform
170 lines (143 loc) • 6.42 kB
JavaScript
/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @constructor
* @extends {WebInspector.VBox}
* @param {!WebInspector.NetworkRequest} request
*/
WebInspector.RequestTimingView = function(request)
{
WebInspector.VBox.call(this);
this.element.classList.add("resource-timing-view");
this._request = request;
}
WebInspector.RequestTimingView.prototype = {
wasShown: function()
{
this._request.addEventListener(WebInspector.NetworkRequest.Events.TimingChanged, this._refresh, this);
this._request.addEventListener(WebInspector.NetworkRequest.Events.FinishedLoading, this._refresh, this);
if (!this._request.timing) {
if (!this._emptyView) {
this._emptyView = new WebInspector.EmptyView(WebInspector.UIString("This request has no detailed timing info."));
this._emptyView.show(this.element);
this.innerView = this._emptyView;
}
return;
}
if (this._emptyView) {
this._emptyView.detach();
delete this._emptyView;
}
this._refresh();
},
willHide: function()
{
this._request.removeEventListener(WebInspector.NetworkRequest.Events.TimingChanged, this._refresh, this);
this._request.removeEventListener(WebInspector.NetworkRequest.Events.FinishedLoading, this._refresh, this);
},
_refresh: function()
{
if (this._tableElement)
this._tableElement.remove();
this._tableElement = WebInspector.RequestTimingView.createTimingTable(this._request);
this.element.appendChild(this._tableElement);
},
__proto__: WebInspector.VBox.prototype
}
/**
* @param {!WebInspector.NetworkRequest} request
* @return {!Element}
*/
WebInspector.RequestTimingView.createTimingTable = function(request)
{
var tableElement = document.createElementWithClass("table", "network-timing-table");
/**
* @param {string} title
* @param {string} className
* @param {number} start
* @param {number} end
*/
function addRow(title, className, start, end)
{
var tr = tableElement.createChild("tr");
tr.createChild("td").createTextChild(title);
var td = tr.createChild("td");
td.width = chartWidth + "px";
var row = td.createChild("div", "network-timing-row");
var bar = row.createChild("span", "network-timing-bar " + className);
bar.style.left = Math.floor(scale * start) + "px";
bar.style.right = Math.floor(scale * (total - end)) + "px";
bar.textContent = "\u200B"; // Important for 0-time items to have 0 width.
var label = row.createChild("span", "network-timing-bar-title");
if (total - end < start)
label.style.right = (scale * (total - end)) + "px";
else
label.style.left = (scale * start) + "px";
label.textContent = Number.secondsToString((end - start) / 1000, true);
}
/**
* @param {!Array.<number>} numbers
* @return {number|undefined}
*/
function firstPositive(numbers)
{
for (var i = 0; i < numbers.length; ++i) {
if (numbers[i] > 0)
return numbers[i];
}
return undefined;
}
var timing = request.timing;
var blocking = firstPositive([timing.dnsStart, timing.connectStart, timing.sendStart]);
var endTime = firstPositive([request.endTime, request.responseReceivedTime, timing.requestTime]);
var total = (endTime - timing.requestTime) * 1000;
const chartWidth = 200;
var scale = chartWidth / total;
if (blocking > 0)
addRow(WebInspector.UIString("Stalled"), "blocking", 0, blocking);
if (timing.proxyStart !== -1)
addRow(WebInspector.UIString("Proxy negotiation"), "proxy", timing.proxyStart, timing.proxyEnd);
if (timing.dnsStart !== -1)
addRow(WebInspector.UIString("DNS Lookup"), "dns", timing.dnsStart, timing.dnsEnd);
if (timing.connectStart !== -1)
addRow(WebInspector.UIString("Initial connection"), "connecting", timing.connectStart, timing.connectEnd);
if (timing.sslStart !== -1)
addRow(WebInspector.UIString("SSL"), "ssl", timing.sslStart, timing.sslEnd);
addRow(WebInspector.UIString("Request sent"), "sending", timing.sendStart, timing.sendEnd);
addRow(WebInspector.UIString("Waiting (TTFB)"), "waiting", timing.sendEnd, timing.receiveHeadersEnd);
if (request.endTime !== -1)
addRow(WebInspector.UIString("Content Download"), "receiving", (request.responseReceivedTime - timing.requestTime) * 1000, total);
if (!request.finished) {
var cell = tableElement.createChild("tr").createChild("td", "caution");
cell.colSpan = 2;
cell.createTextChild(WebInspector.UIString("CAUTION: request is not finished yet!"));
}
return tableElement;
}