chrome/browser/android/popular_sites.h

   1 // Copyright 2015 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 #ifndef CHROME_BROWSER_ANDROID_POPULAR_SITES_H_
   6 #define CHROME_BROWSER_ANDROID_POPULAR_SITES_H_
   7
   8 #include <vector>
   9
  10 #include "base/callback.h"
  11 #include "base/macros.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "base/strings/string16.h"
  15 #include "url/gurl.h"
  16
  17 namespace base {
  18 class FilePath;
  19 }
  20
  21 namespace net {
  22 class URLRequestContextGetter;
  23 }
  24
  25 class FileDownloader;
  26 class Profile;
  27
  28 // Downloads and provides a list of suggested popular sites, for display on
  29 // the NTP when there are not enough personalized suggestions. Caches the
  30 // downloaded file on disk to avoid re-downloading on every startup.
  31 class PopularSites {
  32  public:
  33   struct Site {
  34     Site(const base::string16& title,
  35          const GURL& url,
  36          const GURL& favicon_url,
  37          const GURL& thumbnail_url);
  38     ~Site();
  39
  40     base::string16 title;
  41     GURL url;
  42     GURL favicon_url;
  43     GURL thumbnail_url;
  44   };
  45
  46   using FinishedCallback = base::Callback<void(bool /* success */)>;
  47
  48   PopularSites(Profile* profile,
  49                const std::string& filename,
  50                net::URLRequestContextGetter* request_context,
  51                const FinishedCallback& callback);
  52   ~PopularSites();
  53
  54   const std::vector<Site>& sites() const { return sites_; }
  55
  56  private:
  57   void OnDownloadDone(const base::FilePath& path, bool success);
  58   void OnJsonParsed(scoped_ptr<std::vector<Site>> sites);
  59
  60   FinishedCallback callback_;
  61   scoped_ptr<FileDownloader> downloader_;
  62   std::vector<Site> sites_;
  63
  64   base::WeakPtrFactory<PopularSites> weak_ptr_factory_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(PopularSites);
  67 };
  68
  69 #endif  // CHROME_BROWSER_ANDROID_POPULAR_SITES_H_