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_DOM_STORAGE_CONTEXT_H_ 6 #define CONTENT_PUBLIC_BROWSER_DOM_STORAGE_CONTEXT_H_ 7 8 #include <string> 9 #include <vector> 10 11 #include "base/callback.h" 12 13 class GURL; 14 15 namespace content { 16 17 class BrowserContext; 18 struct LocalStorageUsageInfo; 19 class SessionStorageNamespace; 20 struct SessionStorageUsageInfo; 21 22 // Represents the per-BrowserContext Local Storage data. 23 class DOMStorageContext { 24 public: 25 typedef base::Callback< 26 void(const std::vector<LocalStorageUsageInfo>&)> 27 GetLocalStorageUsageCallback; 28 29 typedef base::Callback< 30 void(const std::vector<SessionStorageUsageInfo>&)> 31 GetSessionStorageUsageCallback; 32 33 // Returns a collection of origins using local storage to the given callback. 34 virtual void GetLocalStorageUsage( 35 const GetLocalStorageUsageCallback& callback) = 0; 36 37 // Returns a collection of origins using session storage to the given 38 // callback. 39 virtual void GetSessionStorageUsage( 40 const GetSessionStorageUsageCallback& callback) = 0; 41 42 // Deletes the local storage data for the given origin. 43 virtual void DeleteLocalStorage(const GURL& origin) = 0; 44 45 // Deletes the session storage data identified by |usage_info|. 46 virtual void DeleteSessionStorage( 47 const SessionStorageUsageInfo& usage_info) = 0; 48 49 // If this is called, sessionStorage data will be stored on disk, and can be 50 // restored after a browser restart (with RecreateSessionStorage). This 51 // function must be called right after DOMStorageContextWrapper is created, 52 // and before it's used. 53 virtual void SetSaveSessionStorageOnDisk() = 0; 54 55 // Creates a SessionStorageNamespace with the given |persistent_id|. Used 56 // after tabs are restored by session restore. When created, the 57 // SessionStorageNamespace with the correct |persistent_id| will be 58 // associated with the persisted sessionStorage data. 59 virtual scoped_refptr<SessionStorageNamespace> RecreateSessionStorage( 60 const std::string& persistent_id) = 0; 61 62 // Starts deleting sessionStorages which don't have an associated 63 // SessionStorageNamespace alive. Called when SessionStorageNamespaces have 64 // been created after a session restore, or a session restore won't happen. 65 virtual void StartScavengingUnusedSessionStorage() = 0; 66 67 protected: 68 virtual ~DOMStorageContext() {} 69 }; 70 71 } // namespace content 72 73 #endif // CONTENT_PUBLIC_BROWSER_DOM_STORAGE_CONTEXT_H_ 74
