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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.classList.add("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.remove();
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    tableElement.className = "network-timing-table";
88    var rows = [];
89
90    function addRow(title, className, start, end)
91    {
92        var row = {};
93        row.title = title;
94        row.className = className;
95        row.start = start;
96        row.end = end;
97        rows.push(row);
98    }
99
100    var timing = request.timing;
101    var blocking = timing.dnsStart > 0 ? timing.dnsStart : timing.connectStart > 0 ? timing.connectStart : timing.sendStart;
102    if (blocking > 0)
103        addRow(WebInspector.UIString("Blocking"), "blocking", 0, blocking);
104
105    if (timing.proxyStart !== -1)
106        addRow(WebInspector.UIString("Proxy"), "proxy", timing.proxyStart, timing.proxyEnd);
107
108    if (timing.dnsStart !== -1)
109        addRow(WebInspector.UIString("DNS Lookup"), "dns", timing.dnsStart, timing.dnsEnd);
110
111    if (timing.connectStart !== -1)
112        addRow(WebInspector.UIString("Connecting"), "connecting", timing.connectStart, timing.connectEnd);
113
114    if (timing.sslStart !== -1)
115        addRow(WebInspector.UIString("SSL"), "ssl", timing.sslStart, timing.sslEnd);
116
117    addRow(WebInspector.UIString("Sending"), "sending", timing.sendStart, timing.sendEnd);
118    addRow(WebInspector.UIString("Waiting"), "waiting", timing.sendEnd, timing.receiveHeadersEnd);
119    addRow(WebInspector.UIString("Receiving"), "receiving", (request.responseReceivedTime - timing.requestTime) * 1000, (request.endTime - timing.requestTime) * 1000);
120
121    const chartWidth = 200;
122    var total = (request.endTime - timing.requestTime) * 1000;
123    var scale = chartWidth / total;
124
125    for (var i = 0; i < rows.length; ++i) {
126        var tr = document.createElement("tr");
127        tableElement.appendChild(tr);
128
129        var td = document.createElement("td");
130        td.textContent = rows[i].title;
131        tr.appendChild(td);
132
133        td = document.createElement("td");
134        td.width = chartWidth + "px";
135
136        var row = document.createElement("div");
137        row.className = "network-timing-row";
138        td.appendChild(row);
139
140        var bar = document.createElement("span");
141        bar.className = "network-timing-bar " + rows[i].className;
142        bar.style.left = Math.floor(scale * rows[i].start) + "px";
143        bar.style.right = Math.floor(scale * (total - rows[i].end)) + "px";
144        bar.style.backgroundColor = rows[i].color;
145        bar.textContent = "\u200B"; // Important for 0-time items to have 0 width.
146        row.appendChild(bar);
147
148        var title = document.createElement("span");
149        title.className = "network-timing-bar-title";
150        if (total - rows[i].end < rows[i].start)
151            title.style.right = (scale * (total - rows[i].end) + 3) + "px";
152        else
153            title.style.left = (scale * rows[i].start + 3) + "px";
154        title.textContent = Number.secondsToString((rows[i].end - rows[i].start) / 1000, true);
155        row.appendChild(title);
156
157        tr.appendChild(td);
158    }
159    return tableElement;
160}
161