summaryrefslogtreecommitdiffstats
path: root/chrome/renderer/loadtimes_extension_bindings.cc
blob: 1ad71ed313b107064d5a95a683533683f308b1ab (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
// Copyright (c) 2006-2009 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.

#include "chrome/renderer/loadtimes_extension_bindings.h"

#include <math.h>

#include "base/time.h"
#include "chrome/renderer/navigation_state.h"
#include "third_party/WebKit/WebKit/chromium/public/WebFrame.h"
#include "v8/include/v8.h"

using WebKit::WebDataSource;
using WebKit::WebFrame;
using WebKit::WebNavigationType;

// Values for CSI "tran" property
const int kTransitionLink = 0;
const int kTransitionForwardBack = 6;
const int kTransitionOther = 15;
const int kTransitionReload = 16;

namespace extensions_v8 {

static const char* const kLoadTimesExtensionName = "v8/LoadTimes";

class LoadTimesExtensionWrapper : public v8::Extension {
 public:
  // Creates an extension which adds a new function, chromium.GetLoadTimes()
  // This function returns an object containing the following members:
  // requestTime: The time the request to load the page was received
  // loadTime: The time the renderer started the load process
  // finishDocumentLoadTime: The time the document itself was loaded
  //                         (this is before the onload() method is fired)
  // finishLoadTime: The time all loading is done, after the onload()
  //                 method and all resources
  // navigationType: A string describing what user action initiated the load
  LoadTimesExtensionWrapper() :
    v8::Extension(kLoadTimesExtensionName,
      "var chrome;"
      "if (!chrome)"
      "  chrome = {};"
      "chrome.loadTimes = function() {"
      "  native function GetLoadTimes();"
      "  return GetLoadTimes();"
      "};"
      "chrome.csi = function() {"
      "  native function GetCSI();"
      "  return GetCSI();"
      "}") {}

  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
      v8::Handle<v8::String> name) {
    if (name->Equals(v8::String::New("GetLoadTimes"))) {
      return v8::FunctionTemplate::New(GetLoadTimes);
    } else if (name->Equals(v8::String::New("GetCSI"))) {
      return v8::FunctionTemplate::New(GetCSI);
    }
    return v8::Handle<v8::FunctionTemplate>();
  }

  static const char* GetNavigationType(WebNavigationType nav_type) {
    switch (nav_type) {
      case WebKit::WebNavigationTypeLinkClicked:
        return "LinkClicked";
      case WebKit::WebNavigationTypeFormSubmitted:
        return "FormSubmitted";
      case WebKit::WebNavigationTypeBackForward:
        return "BackForward";
      case WebKit::WebNavigationTypeReload:
        return "Reload";
      case WebKit::WebNavigationTypeFormResubmitted:
        return "Resubmitted";
      case WebKit::WebNavigationTypeOther:
        return "Other";
    }
    return "";
  }

  static int GetCSITransitionType(WebNavigationType nav_type) {
    switch (nav_type) {
      case WebKit::WebNavigationTypeLinkClicked:
      case WebKit::WebNavigationTypeFormSubmitted:
      case WebKit::WebNavigationTypeFormResubmitted:
        return kTransitionLink;
      case WebKit::WebNavigationTypeBackForward:
        return kTransitionForwardBack;
      case WebKit::WebNavigationTypeReload:
        return kTransitionReload;
      case WebKit::WebNavigationTypeOther:
        return kTransitionOther;
    }
    return kTransitionOther;
  }

  static v8::Handle<v8::Value> GetLoadTimes(const v8::Arguments& args) {
    WebFrame* frame = WebFrame::frameForCurrentContext();
    if (frame) {
      WebDataSource* data_source = frame->dataSource();
      if (data_source) {
        NavigationState* navigation_state =
            NavigationState::FromDataSource(data_source);
        v8::Local<v8::Object> load_times = v8::Object::New();
        load_times->Set(
            v8::String::New("requestTime"),
            v8::Number::New(navigation_state->request_time().ToDoubleT()));
        load_times->Set(
            v8::String::New("startLoadTime"),
            v8::Number::New(navigation_state->start_load_time().ToDoubleT()));
        load_times->Set(
            v8::String::New("commitLoadTime"),
            v8::Number::New(navigation_state->commit_load_time().ToDoubleT()));
        load_times->Set(
            v8::String::New("finishDocumentLoadTime"),
            v8::Number::New(
                navigation_state->finish_document_load_time().ToDoubleT()));
        load_times->Set(
            v8::String::New("finishLoadTime"),
            v8::Number::New(navigation_state->finish_load_time().ToDoubleT()));
        load_times->Set(
            v8::String::New("firstPaintTime"),
            v8::Number::New(navigation_state->first_paint_time().ToDoubleT()));
        load_times->Set(
            v8::String::New("firstPaintAfterLoadTime"),
            v8::Number::New(
                navigation_state->first_paint_after_load_time().ToDoubleT()));
        load_times->Set(
            v8::String::New("navigationType"),
            v8::String::New(GetNavigationType(data_source->navigationType())));
        load_times->Set(
            v8::String::New("wasFetchedViaSpdy"),
            v8::Boolean::New(navigation_state->was_fetched_via_spdy()));
        load_times->Set(
            v8::String::New("wasNpnNegotiated"),
            v8::Boolean::New(navigation_state->was_npn_negotiated()));
        load_times->Set(
            v8::String::New("wasAlternateProtocolAvailable"),
            v8::Boolean::New(
                navigation_state->was_alternate_protocol_available()));
        return load_times;
      }
    }
    return v8::Null();
  }

  static v8::Handle<v8::Value> GetCSI(const v8::Arguments& args) {
    WebFrame* frame = WebFrame::frameForCurrentContext();
    if (frame) {
      WebDataSource* data_source = frame->dataSource();
      if (data_source) {
        NavigationState* navigation_state =
            NavigationState::FromDataSource(data_source);
        v8::Local<v8::Object> csi = v8::Object::New();
        base::Time now = base::Time::Now();
        base::Time start = navigation_state->request_time().is_null() ?
            navigation_state->start_load_time() :
            navigation_state->request_time();
        base::Time onload = navigation_state->finish_document_load_time();
        base::TimeDelta page = now - start;
        csi->Set(
            v8::String::New("startE"),
            v8::Number::New(floor(start.ToDoubleT() * 1000)));
        csi->Set(
            v8::String::New("onloadT"),
            v8::Number::New(floor(onload.ToDoubleT() * 1000)));
        csi->Set(
          v8::String::New("pageT"),
          v8::Number::New(page.InMillisecondsF()));
        csi->Set(
            v8::String::New("tran"),
            v8::Number::New(
                GetCSITransitionType(data_source->navigationType())));

        return csi;
      }
    }
    return v8::Null();
  }
};

v8::Extension* LoadTimesExtension::Get() {
  return new LoadTimesExtensionWrapper();
}

}  // namespace extensions_v8