chrome/browser/search/most_visited_iframe_source.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/search/most_visited_iframe_source.h"
   6
   7 #include "base/metrics/histogram.h"
   8 #include "base/strings/string_number_conversions.h"
   9 #include "base/strings/stringprintf.h"
  10 #include "chrome/common/url_constants.h"
  11 #include "content/public/browser/user_metrics.h"
  12 #include "grit/browser_resources.h"
  13 #include "net/base/url_util.h"
  14 #include "url/gurl.h"
  15
  16 namespace {
  17
  18 const char kTitleHTMLPath[] = "/title.html";
  19 const char kTitleCSSPath[] = "/title.css";
  20 const char kTitleJSPath[] = "/title.js";
  21 const char kThumbnailHTMLPath[] = "/thumbnail.html";
  22 const char kThumbnailCSSPath[] = "/thumbnail.css";
  23 const char kThumbnailJSPath[] = "/thumbnail.js";
  24 const char kUtilJSPath[] = "/util.js";
  25 const char kCommonCSSPath[] = "/common.css";
  26 const char kLogHTMLPath[] = "/log.html";
  27 const char kMostVisitedHistogramWithProvider[] = "NewTabPage.MostVisited.%s";
  28
  29 }  // namespace
  30
  31 MostVisitedIframeSource::MostVisitedIframeSource() {
  32 }
  33
  34 MostVisitedIframeSource::~MostVisitedIframeSource() {
  35 }
  36
  37 const int MostVisitedIframeSource::kNumMostVisited = 8;
  38 const char MostVisitedIframeSource::kMostVisitedHistogramName[] =
  39     "NewTabPage.MostVisited";
  40
  41 std::string MostVisitedIframeSource::GetSource() const {
  42   return chrome::kChromeSearchMostVisitedHost;
  43 }
  44
  45 void MostVisitedIframeSource::StartDataRequest(
  46     const std::string& path_and_query,
  47     int render_process_id,
  48     int render_frame_id,
  49     const content::URLDataSource::GotDataCallback& callback) {
  50   GURL url(chrome::kChromeSearchMostVisitedUrl + path_and_query);
  51   std::string path(url.path());
  52   if (path == kTitleHTMLPath) {
  53     SendResource(IDR_MOST_VISITED_TITLE_HTML, callback);
  54   } else if (path == kTitleCSSPath) {
  55     SendResource(IDR_MOST_VISITED_TITLE_CSS, callback);
  56   } else if (path == kTitleJSPath) {
  57     SendResource(IDR_MOST_VISITED_TITLE_JS, callback);
  58   } else if (path == kThumbnailHTMLPath) {
  59     SendResource(IDR_MOST_VISITED_THUMBNAIL_HTML, callback);
  60   } else if (path == kThumbnailCSSPath) {
  61     SendResource(IDR_MOST_VISITED_THUMBNAIL_CSS, callback);
  62   } else if (path == kThumbnailJSPath) {
  63     SendJSWithOrigin(IDR_MOST_VISITED_THUMBNAIL_JS, render_process_id,
  64                      render_frame_id, callback);
  65   } else if (path == kUtilJSPath) {
  66     SendResource(IDR_MOST_VISITED_UTIL_JS, callback);
  67   } else if (path == kCommonCSSPath) {
  68     SendResource(IDR_MOST_VISITED_IFRAME_CSS, callback);
  69   } else if (path == kLogHTMLPath) {
  70     // Log the clicked MostVisited element by position.
  71     std::string str_position;
  72     int position;
  73     if (net::GetValueForKeyInQuery(url, "pos", &str_position) &&
  74         base::StringToInt(str_position, &position)) {
  75       // Log the Most Visited click.
  76       UMA_HISTOGRAM_ENUMERATION(kMostVisitedHistogramName, position,
  77                                 kNumMostVisited);
  78       // If a specific provider is specified, log the metric specific to the
  79       // provider.
  80       std::string provider;
  81       if (net::GetValueForKeyInQuery(url, "pr", &provider))
  82         LogMostVisitedProviderClick(position, provider);
  83
  84       // Records the action. This will be available as a time-stamped stream
  85       // server-side and can be used to compute time-to-long-dwell.
  86       content::RecordAction(base::UserMetricsAction("MostVisited_Clicked"));
  87     }
  88     callback.Run(NULL);
  89   } else {
  90     callback.Run(NULL);
  91   }
  92 }
  93
  94 bool MostVisitedIframeSource::ServesPath(const std::string& path) const {
  95   return path == kTitleHTMLPath || path == kTitleCSSPath ||
  96          path == kTitleJSPath || path == kThumbnailHTMLPath ||
  97          path == kThumbnailCSSPath || path == kThumbnailJSPath ||
  98          path == kUtilJSPath || path == kCommonCSSPath || path == kLogHTMLPath;
  99 }
 100
 101 void MostVisitedIframeSource::LogMostVisitedProviderClick(
 102     int position,
 103     const std::string& provider) {
 104   std::string histogram_name =
 105       MostVisitedIframeSource::GetHistogramNameForProvider(provider);
 106   base::HistogramBase* counter = base::LinearHistogram::FactoryGet(
 107       histogram_name, 1,
 108       MostVisitedIframeSource::kNumMostVisited,
 109       MostVisitedIframeSource::kNumMostVisited + 1,
 110       base::Histogram::kUmaTargetedHistogramFlag);
 111   counter->Add(position);
 112 }
 113
 114 // static
 115 std::string MostVisitedIframeSource::GetHistogramNameForProvider(
 116     const std::string& provider) {
 117   return base::StringPrintf(kMostVisitedHistogramWithProvider,
 118                             provider.c_str());
 119 }