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   explicit BrowsingDataAppCacheHelper(content::BrowserContext* browser_context);
  27
  28   virtual void StartFetching(const base::Closure& completion_callback);
  29   virtual void DeleteAppCacheGroup(const GURL& manifest_url);
  30
  31   content::AppCacheInfoCollection* info_collection() const {
  32     DCHECK(!is_fetching_);
  33     return info_collection_.get();
  34   }
  35
  36  protected:
  37   friend class base::RefCountedThreadSafe<BrowsingDataAppCacheHelper>;
  38   virtual ~BrowsingDataAppCacheHelper();
  39
  40   base::Closure completion_callback_;
  41   scoped_refptr<content::AppCacheInfoCollection> info_collection_;
  42
  43  private:
  44   void OnFetchComplete(int rv);
  45
  46   bool is_fetching_;
  47   content::AppCacheService* appcache_service_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(BrowsingDataAppCacheHelper);
  50 };
  51
  52 // This class is a thin wrapper around BrowsingDataAppCacheHelper that does not
  53 // fetch its information from the appcache service, but gets them passed as
  54 // a parameter during construction.
  55 class CannedBrowsingDataAppCacheHelper : public BrowsingDataAppCacheHelper {
  56  public:
  57   explicit CannedBrowsingDataAppCacheHelper(
  58       content::BrowserContext* browser_context);
  59
  60   // Add an appcache to the set of canned caches that is returned by this
  61   // helper.
  62   void AddAppCache(const GURL& manifest_url);
  63
  64   // Clears the list of canned caches.
  65   void Reset();
  66
  67   // True if no appcaches are currently stored.
  68   bool empty() const;
  69
  70   // Returns the number of app cache resources.
  71   size_t GetAppCacheCount() const;
  72
  73   // Returns a current map with the |AppCacheInfoVector|s per origin.
  74   const OriginAppCacheInfoMap& GetOriginAppCacheInfoMap() const;
  75
  76   // BrowsingDataAppCacheHelper methods.
  77   void StartFetching(const base::Closure& completion_callback) override;
  78   void DeleteAppCacheGroup(const GURL& manifest_url) override;
  79
  80  private:
  81   ~CannedBrowsingDataAppCacheHelper() override;
  82
  83   DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataAppCacheHelper);
  84 };
  85
  86 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_APPCACHE_HELPER_H_