content/public/browser/appcache_service.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 CONTENT_PUBLIC_BROWSER_APPCACHE_SERVICE_H_
   6 #define CONTENT_PUBLIC_BROWSER_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 "content/common/content_export.h"
  14 #include "content/public/common/appcache_info.h"
  15 #include "net/base/completion_callback.h"
  16
  17 namespace content {
  18
  19 class AppCacheStorage;
  20
  21 // Refcounted container to avoid copying the collection in callbacks.
  22 struct CONTENT_EXPORT AppCacheInfoCollection
  23     : public base::RefCountedThreadSafe<AppCacheInfoCollection> {
  24   AppCacheInfoCollection();
  25
  26   std::map<GURL, AppCacheInfoVector> infos_by_origin;
  27
  28  private:
  29   friend class base::RefCountedThreadSafe<AppCacheInfoCollection>;
  30   virtual ~AppCacheInfoCollection();
  31 };
  32
  33 // Exposes a limited interface to the AppCacheService.
  34 // Call these methods only on the IO thread.
  35 class CONTENT_EXPORT AppCacheService {
  36  public:
  37   // Determines if a request for 'url' can be satisfied while offline.
  38   // This method always completes asynchronously.
  39   virtual void CanHandleMainResourceOffline(const GURL& url,
  40                                             const GURL& first_party,
  41                                             const net::CompletionCallback&
  42                                             callback) = 0;
  43
  44   // Populates 'collection' with info about all of the appcaches stored
  45   // within the service, 'callback' is invoked upon completion. The service
  46   // acquires a reference to the 'collection' until completion.
  47   // This method always completes asynchronously.
  48   virtual void GetAllAppCacheInfo(AppCacheInfoCollection* collection,
  49                                   const net::CompletionCallback& callback) = 0;
  50
  51   // Deletes the group identified by 'manifest_url', 'callback' is
  52   // invoked upon completion. Upon completion, the cache group and
  53   // any resources within the group are no longer loadable and all
  54   // subresource loads for pages associated with a deleted group
  55   // will fail. This method always completes asynchronously.
  56   virtual void DeleteAppCacheGroup(const GURL& manifest_url,
  57                                    const net::CompletionCallback& callback) = 0;
  58
  59  protected:
  60   virtual ~AppCacheService() {}
  61 };
  62
  63 }  // namespace content
  64
  65 #endif  // CONTENT_PUBLIC_BROWSER_APPCACHE_SERVICE_H_