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      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 WEBKIT_BROWSER_APPCACHE_APPCACHE_SERVICE_H_
      6 #define WEBKIT_BROWSER_APPCACHE_APPCACHE_SERVICE_H_
      7 
      8 #include <map>
      9 #include <set>
     10 
     11 #include "base/memory/ref_counted.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "webkit/browser/webkit_storage_browser_export.h"
     14 #include "webkit/common/appcache/appcache_interfaces.h"
     15 
     16 namespace appcache {
     17 
     18 class AppCacheStorage;
     19 
     20 // Refcounted container to avoid copying the collection in callbacks.
     21 struct WEBKIT_STORAGE_BROWSER_EXPORT AppCacheInfoCollection
     22     : public base::RefCountedThreadSafe<AppCacheInfoCollection> {
     23   AppCacheInfoCollection();
     24 
     25   std::map<GURL, AppCacheInfoVector> infos_by_origin;
     26 
     27  private:
     28   friend class base::RefCountedThreadSafe<AppCacheInfoCollection>;
     29   virtual ~AppCacheInfoCollection();
     30 };
     31 
     32 // Class that manages the application cache service. Sends notifications
     33 // to many frontends. One instance per user-profile. Each instance has
     34 // exclusive access to its cache_directory on disk.
     35 class WEBKIT_STORAGE_BROWSER_EXPORT AppCacheService {
     36  public:
     37   virtual ~AppCacheService() { }
     38 
     39   // Determines if a request for 'url' can be satisfied while offline.
     40   // This method always completes asynchronously.
     41   virtual void CanHandleMainResourceOffline(const GURL& url,
     42                                             const GURL& first_party,
     43                                             const net::CompletionCallback&
     44                                             callback) = 0;
     45 
     46   // Populates 'collection' with info about all of the appcaches stored
     47   // within the service, 'callback' is invoked upon completion. The service
     48   // acquires a reference to the 'collection' until until completion.
     49   // This method always completes asynchronously.
     50   virtual void GetAllAppCacheInfo(AppCacheInfoCollection* collection,
     51                                   const net::CompletionCallback& callback) = 0;
     52 
     53   // Deletes the group identified by 'manifest_url', 'callback' is
     54   // invoked upon completion. Upon completion, the cache group and
     55   // any resources within the group are no longer loadable and all
     56   // subresource loads for pages associated with a deleted group
     57   // will fail. This method always completes asynchronously.
     58   virtual void DeleteAppCacheGroup(const GURL& manifest_url,
     59                                    const net::CompletionCallback& callback) = 0;
     60 };
     61 
     62 }  // namespace appcache
     63 
     64 #endif  // WEBKIT_BROWSER_APPCACHE_APPCACHE_SERVICE_H_
     65