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      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 
     27 }  // namespace
     28 
     29 MostVisitedIframeSource::MostVisitedIframeSource() {
     30 }
     31 
     32 MostVisitedIframeSource::~MostVisitedIframeSource() {
     33 }
     34 
     35 const int MostVisitedIframeSource::kNumMostVisited = 8;
     36 const char MostVisitedIframeSource::kMostVisitedHistogramName[] =
     37     "NewTabPage.MostVisited";
     38 
     39 std::string MostVisitedIframeSource::GetSource() const {
     40   return chrome::kChromeSearchMostVisitedHost;
     41 }
     42 
     43 void MostVisitedIframeSource::StartDataRequest(
     44     const std::string& path_and_query,
     45     int render_process_id,
     46     int render_frame_id,
     47     const content::URLDataSource::GotDataCallback& callback) {
     48   GURL url(chrome::kChromeSearchMostVisitedUrl + path_and_query);
     49   std::string path(url.path());
     50   if (path == kTitleHTMLPath) {
     51     SendResource(IDR_MOST_VISITED_TITLE_HTML, callback);
     52   } else if (path == kTitleCSSPath) {
     53     SendResource(IDR_MOST_VISITED_TITLE_CSS, callback);
     54   } else if (path == kTitleJSPath) {
     55     SendResource(IDR_MOST_VISITED_TITLE_JS, callback);
     56   } else if (path == kThumbnailHTMLPath) {
     57     SendResource(IDR_MOST_VISITED_THUMBNAIL_HTML, callback);
     58   } else if (path == kThumbnailCSSPath) {
     59     SendResource(IDR_MOST_VISITED_THUMBNAIL_CSS, callback);
     60   } else if (path == kThumbnailJSPath) {
     61     SendJSWithOrigin(IDR_MOST_VISITED_THUMBNAIL_JS, render_process_id,
     62                      render_frame_id, callback);
     63   } else if (path == kUtilJSPath) {
     64     SendResource(IDR_MOST_VISITED_UTIL_JS, callback);
     65   } else if (path == kCommonCSSPath) {
     66     SendResource(IDR_MOST_VISITED_IFRAME_CSS, callback);
     67   } else {
     68     callback.Run(NULL);
     69   }
     70 }
     71 
     72 bool MostVisitedIframeSource::ServesPath(const std::string& path) const {
     73   return path == kTitleHTMLPath || path == kTitleCSSPath ||
     74          path == kTitleJSPath || path == kThumbnailHTMLPath ||
     75          path == kThumbnailCSSPath || path == kThumbnailJSPath ||
     76          path == kUtilJSPath || path == kCommonCSSPath;
     77 }
     78