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_QUOTA_CLIENT_H_ 6 #define WEBKIT_BROWSER_APPCACHE_APPCACHE_QUOTA_CLIENT_H_ 7 8 #include <deque> 9 #include <map> 10 #include <string> 11 12 #include "base/gtest_prod_util.h" 13 #include "base/memory/ref_counted.h" 14 #include "base/memory/scoped_ptr.h" 15 #include "net/base/completion_callback.h" 16 #include "webkit/browser/appcache/appcache_storage.h" 17 #include "webkit/browser/quota/quota_client.h" 18 #include "webkit/browser/quota/quota_task.h" 19 #include "webkit/browser/webkit_storage_browser_export.h" 20 #include "webkit/common/quota/quota_types.h" 21 22 namespace content { 23 class AppCacheQuotaClientTest; 24 } 25 26 namespace appcache { 27 28 class AppCacheServiceImpl; 29 class AppCacheStorageImpl; 30 class AppCacheQuotaClientTest; 31 32 // A QuotaClient implementation to integrate the appcache service 33 // with the quota management system. The QuotaClient interface is 34 // used on the IO thread by the quota manager. This class deletes 35 // itself when both the quota manager and the appcache service have 36 // been destroyed. 37 class AppCacheQuotaClient : public quota::QuotaClient { 38 public: 39 typedef std::deque<base::Closure> RequestQueue; 40 41 virtual ~AppCacheQuotaClient(); 42 43 // QuotaClient method overrides 44 virtual ID id() const OVERRIDE; 45 virtual void OnQuotaManagerDestroyed() OVERRIDE; 46 virtual void GetOriginUsage(const GURL& origin, 47 quota::StorageType type, 48 const GetUsageCallback& callback) OVERRIDE; 49 virtual void GetOriginsForType(quota::StorageType type, 50 const GetOriginsCallback& callback) OVERRIDE; 51 virtual void GetOriginsForHost(quota::StorageType type, 52 const std::string& host, 53 const GetOriginsCallback& callback) OVERRIDE; 54 virtual void DeleteOriginData(const GURL& origin, 55 quota::StorageType type, 56 const DeletionCallback& callback) OVERRIDE; 57 virtual bool DoesSupport(quota::StorageType type) const OVERRIDE; 58 59 private: 60 friend class content::AppCacheQuotaClientTest; 61 friend class AppCacheServiceImpl; // for NotifyAppCacheIsDestroyed 62 friend class AppCacheStorageImpl; // for NotifyAppCacheIsReady 63 64 WEBKIT_STORAGE_BROWSER_EXPORT 65 explicit AppCacheQuotaClient(AppCacheServiceImpl* service); 66 67 void DidDeleteAppCachesForOrigin(int rv); 68 void GetOriginsHelper(quota::StorageType type, 69 const std::string& opt_host, 70 const GetOriginsCallback& callback); 71 void ProcessPendingRequests(); 72 void DeletePendingRequests(); 73 const AppCacheStorage::UsageMap* GetUsageMap(); 74 net::CancelableCompletionCallback* GetServiceDeleteCallback(); 75 76 // For use by appcache internals during initialization and shutdown. 77 WEBKIT_STORAGE_BROWSER_EXPORT void NotifyAppCacheReady(); 78 WEBKIT_STORAGE_BROWSER_EXPORT void NotifyAppCacheDestroyed(); 79 80 // Prior to appcache service being ready, we have to queue 81 // up reqeusts and defer acting on them until we're ready. 82 RequestQueue pending_batch_requests_; 83 RequestQueue pending_serial_requests_; 84 85 // And once it's ready, we can only handle one delete request at a time, 86 // so we queue up additional requests while one is in already in progress. 87 DeletionCallback current_delete_request_callback_; 88 scoped_ptr<net::CancelableCompletionCallback> service_delete_callback_; 89 90 AppCacheServiceImpl* service_; 91 bool appcache_is_ready_; 92 bool quota_manager_is_destroyed_; 93 94 DISALLOW_COPY_AND_ASSIGN(AppCacheQuotaClient); 95 }; 96 97 } // namespace appcache 98 99 #endif // WEBKIT_BROWSER_APPCACHE_APPCACHE_QUOTA_CLIENT_H_ 100