chrome/browser/browsing_data/browsing_data_appcache_helper.h

   1 // Copyright (c) 2012 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_BROWSING_DATA_BROWSING_DATA_APPCACHE_HELPER_H_
   6 #define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_APPCACHE_HELPER_H_
   7
   8 #include <map>
   9
  10 #include "base/callback.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "content/public/browser/appcache_service.h"
  13 #include "url/gurl.h"
  14
  15 namespace content {
  16 class BrowserContext;
  17 }
  18
  19 // This class fetches appcache information on behalf of a caller
  20 // on the UI thread.
  21 class BrowsingDataAppCacheHelper
  22     : public base::RefCountedThreadSafe<BrowsingDataAppCacheHelper> {
  23  public:
  24   typedef std::map<GURL, content::AppCacheInfoVector> OriginAppCacheInfoMap;
  25
  26   using FetchCallback =
  27       base::Callback<void(scoped_refptr<content::AppCacheInfoCollection>)>;
  28
  29   explicit BrowsingDataAppCacheHelper(content::BrowserContext* browser_context);
  30
  31   virtual void StartFetching(const FetchCallback& completion_callback);
  32   virtual void DeleteAppCacheGroup(const GURL& manifest_url);
  33
  34  protected:
  35   friend class base::RefCountedThreadSafe<BrowsingDataAppCacheHelper>;
  36   virtual ~BrowsingDataAppCacheHelper();
  37
  38  private:
  39   void StartFetchingOnIOThread(const FetchCallback& completion_callback);
  40   void DeleteAppCacheGroupOnIOThread(const GURL& manifest_url);
  41
  42   content::AppCacheService* appcache_service_;
  43
  44   DISALLOW_COPY_AND_ASSIGN(BrowsingDataAppCacheHelper);
  45 };
  46
  47 // This class is a thin wrapper around BrowsingDataAppCacheHelper that does not
  48 // fetch its information from the appcache service, but gets them passed as
  49 // a parameter during construction.
  50 class CannedBrowsingDataAppCacheHelper : public BrowsingDataAppCacheHelper {
  51  public:
  52   explicit CannedBrowsingDataAppCacheHelper(
  53       content::BrowserContext* browser_context);
  54
  55   // Add an appcache to the set of canned caches that is returned by this
  56   // helper.
  57   void AddAppCache(const GURL& manifest_url);
  58
  59   // Clears the list of canned caches.
  60   void Reset();
  61
  62   // True if no appcaches are currently stored.
  63   bool empty() const;
  64
  65   // Returns the number of app cache resources.
  66   size_t GetAppCacheCount() const;
  67
  68   // Returns a current map with the |AppCacheInfoVector|s per origin.
  69   const OriginAppCacheInfoMap& GetOriginAppCacheInfoMap() const;
  70
  71   // BrowsingDataAppCacheHelper methods.
  72   void StartFetching(const FetchCallback& completion_callback) override;
  73   void DeleteAppCacheGroup(const GURL& manifest_url) override;
  74
  75  private:
  76   ~CannedBrowsingDataAppCacheHelper() override;
  77
  78   scoped_refptr<content::AppCacheInfoCollection> info_collection_;
  79
  80   DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataAppCacheHelper);
  81 };
  82
  83 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_APPCACHE_HELPER_H_