1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31/**
32 * @constructor
33 * @extends {WebInspector.View}
34 * @param {WebInspector.NetworkRequest} request
35 */
36WebInspector.RequestTimingView = function(request)
37{
38    WebInspector.View.call(this);
39    this.element.addStyleClass("resource-timing-view");
40
41    this._request = request;
42}
43
44WebInspector.RequestTimingView.prototype = {
45    wasShown: function()
46    {
47        this._request.addEventListener(WebInspector.NetworkRequest.Events.TimingChanged, this._refresh, this);
48
49        if (!this._request.timing) {
50            if (!this._emptyView) {
51                this._emptyView = new WebInspector.EmptyView(WebInspector.UIString("This request has no detailed timing info."));
52                this._emptyView.show(this.element);
53                this.innerView = this._emptyView;
54            }
55            return;
56        }
57
58        if (this._emptyView) {
59            this._emptyView.detach();
60            delete this._emptyView;
61        }
62
63        this._refresh();
64    },
65
66    willHide: function()
67    {
68        this._request.removeEventListener(WebInspector.NetworkRequest.Events.TimingChanged, this._refresh, this);
69    },
70
71    _refresh: function()
72    {
73        if (this._tableElement)
74            this._tableElement.parentElement.removeChild(this._tableElement);
75
76        this._tableElement = WebInspector.RequestTimingView.createTimingTable(this._request);
77        this.element.appendChild(this._tableElement);
78    },
79
80    __proto__: WebInspector.View.prototype
81}
82
83
84WebInspector.RequestTimingView.createTimingTable = function(request)
85{
86    var tableElement = document.createElement("table");
87    var rows = [];
88
89    function addRow(title, className, start, end)
90    {
91        var row = {};
92        row.title = title;
93        row.className = className;
94        row.start = start;
95        row.end = end;
96        rows.push(row);
97    }
98
99    if (request.timing.proxyStart !== -1)
100        addRow(WebInspector.UIString("Proxy"), "proxy", request.timing.proxyStart, request.timing.proxyEnd);
101
102    if (request.timing.dnsStart !== -1)
103        addRow(WebInspector.UIString("DNS Lookup"), "dns", request.timing.dnsStart, request.timing.dnsEnd);
104
105    if (request.timing.connectStart !== -1) {
106        if (request.connectionReused)
107            addRow(WebInspector.UIString("Blocking"), "connecting", request.timing.connectStart, request.timing.connectEnd);
108        else {
109            var connectStart = request.timing.connectStart;
110            // Connection includes DNS, subtract it here.
111            if (request.timing.dnsStart !== -1)
112                connectStart += request.timing.dnsEnd - request.timing.dnsStart;
113            addRow(WebInspector.UIString("Connecting"), "connecting", connectStart, request.timing.connectEnd);
114        }
115    }
116
117    if (request.timing.sslStart !== -1)
118        addRow(WebInspector.UIString("SSL"), "ssl", request.timing.sslStart, request.timing.sslEnd);
119
120    var sendStart = request.timing.sendStart;
121    if (request.timing.sslStart !== -1)
122        sendStart += request.timing.sslEnd - request.timing.sslStart;
123
124    addRow(WebInspector.UIString("Sending"), "sending", request.timing.sendStart, request.timing.sendEnd);
125    addRow(WebInspector.UIString("Waiting"), "waiting", request.timing.sendEnd, request.timing.receiveHeadersEnd);
126    addRow(WebInspector.UIString("Receiving"), "receiving", (request.responseReceivedTime - request.timing.requestTime) * 1000, (request.endTime - request.timing.requestTime) * 1000);
127
128    const chartWidth = 200;
129    var total = (request.endTime - request.timing.requestTime) * 1000;
130    var scale = chartWidth / total;
131
132    for (var i = 0; i < rows.length; ++i) {
133        var tr = document.createElement("tr");
134        tableElement.appendChild(tr);
135
136        var td = document.createElement("td");
137        td.textContent = rows[i].title;
138        tr.appendChild(td);
139
140        td = document.createElement("td");
141        td.width = chartWidth + "px";
142
143        var row = document.createElement("div");
144        row.className = "network-timing-row";
145        td.appendChild(row);
146
147        var bar = document.createElement("span");
148        bar.className = "network-timing-bar " + rows[i].className;
149        bar.style.left = scale * rows[i].start + "px";
150        bar.style.right = scale * (total - rows[i].end) + "px";
151        bar.style.backgroundColor = rows[i].color;
152        bar.textContent = "\u200B"; // Important for 0-time items to have 0 width.
153        row.appendChild(bar);
154
155        var title = document.createElement("span");
156        title.className = "network-timing-bar-title";
157        if (total - rows[i].end < rows[i].start)
158            title.style.right = (scale * (total - rows[i].end) + 3) + "px";
159        else
160            title.style.left = (scale * rows[i].start + 3) + "px";
161        title.textContent = Number.secondsToString((rows[i].end - rows[i].start) / 1000);
162        row.appendChild(title);
163
164        tr.appendChild(td);
165    }
166    return tableElement;
167}
168