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 "net/base/completion_callback.h"
  14 #include "url/gurl.h"
  15
  16 namespace content {
  17 class BrowserContext;
  18 }
  19
  20 // This class fetches appcache information on behalf of a caller
  21 // on the UI thread.
  22 class BrowsingDataAppCacheHelper
  23     : public base::RefCountedThreadSafe<BrowsingDataAppCacheHelper> {
  24  public:
  25   typedef std::map<GURL, content::AppCacheInfoVector> OriginAppCacheInfoMap;
  26
  27   explicit BrowsingDataAppCacheHelper(content::BrowserContext* browser_context);
  28
  29   virtual void StartFetching(const base::Closure& completion_callback);
  30   virtual void DeleteAppCacheGroup(const GURL& manifest_url);
  31
  32   content::AppCacheInfoCollection* info_collection() const {
  33     DCHECK(!is_fetching_);
  34     return info_collection_.get();
  35   }
  36
  37  protected:
  38   friend class base::RefCountedThreadSafe<BrowsingDataAppCacheHelper>;
  39   virtual ~BrowsingDataAppCacheHelper();
  40
  41   base::Closure completion_callback_;
  42   scoped_refptr<content::AppCacheInfoCollection> info_collection_;
  43
  44  private:
  45   void OnFetchComplete(int rv);
  46
  47   bool is_fetching_;
  48   content::AppCacheService* appcache_service_;
  49   net::CancelableCompletionCallback appcache_info_callback_;
  50
  51   DISALLOW_COPY_AND_ASSIGN(BrowsingDataAppCacheHelper);
  52 };
  53
  54 // This class is a thin wrapper around BrowsingDataAppCacheHelper that does not
  55 // fetch its information from the appcache service, but gets them passed as
  56 // a parameter during construction.
  57 class CannedBrowsingDataAppCacheHelper : public BrowsingDataAppCacheHelper {
  58  public:
  59   explicit CannedBrowsingDataAppCacheHelper(
  60       content::BrowserContext* browser_context);
  61
  62   // Add an appcache to the set of canned caches that is returned by this
  63   // helper.
  64   void AddAppCache(const GURL& manifest_url);
  65
  66   // Clears the list of canned caches.
  67   void Reset();
  68
  69   // True if no appcaches are currently stored.
  70   bool empty() const;
  71
  72   // Returns the number of app cache resources.
  73   size_t GetAppCacheCount() const;
  74
  75   // Returns a current map with the |AppCacheInfoVector|s per origin.
  76   const OriginAppCacheInfoMap& GetOriginAppCacheInfoMap() const;
  77
  78   // BrowsingDataAppCacheHelper methods.
  79   virtual void StartFetching(const base::Closure& completion_callback) override;
  80   virtual void DeleteAppCacheGroup(const GURL& manifest_url) override;
  81
  82  private:
  83   virtual ~CannedBrowsingDataAppCacheHelper();
  84
  85   DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataAppCacheHelper);
  86 };
  87
  88 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_APPCACHE_HELPER_H_