Ben Murdoch | bb1529c | 2013-08-08 10:24:53 +0100 | [diff] [blame^] | 1 | // Copyright 2013 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_BROWSER_DOM_STORAGE_DOM_STORAGE_CONTEXT_WRAPPER_H_ |
| 6 | #define CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_CONTEXT_WRAPPER_H_ |
| 7 | |
| 8 | #include "base/memory/ref_counted.h" |
| 9 | #include "content/common/content_export.h" |
| 10 | #include "content/public/browser/dom_storage_context.h" |
| 11 | |
| 12 | namespace base { |
| 13 | class FilePath; |
| 14 | } |
| 15 | |
| 16 | namespace quota { |
| 17 | class SpecialStoragePolicy; |
| 18 | } |
| 19 | |
| 20 | namespace content { |
| 21 | |
| 22 | class DOMStorageContextImpl; |
| 23 | |
| 24 | // This is owned by BrowserContext (aka Profile) and encapsulates all |
| 25 | // per-profile dom storage state. |
| 26 | class CONTENT_EXPORT DOMStorageContextWrapper : |
| 27 | NON_EXPORTED_BASE(public DOMStorageContext), |
| 28 | public base::RefCountedThreadSafe<DOMStorageContextWrapper> { |
| 29 | public: |
| 30 | // If |data_path| is empty, nothing will be saved to disk. |
| 31 | DOMStorageContextWrapper(const base::FilePath& data_path, |
| 32 | quota::SpecialStoragePolicy* special_storage_policy); |
| 33 | |
| 34 | // DOMStorageContext implementation. |
| 35 | virtual void GetLocalStorageUsage( |
| 36 | const GetLocalStorageUsageCallback& callback) OVERRIDE; |
| 37 | virtual void GetSessionStorageUsage( |
| 38 | const GetSessionStorageUsageCallback& callback) OVERRIDE; |
| 39 | virtual void DeleteLocalStorage(const GURL& origin) OVERRIDE; |
| 40 | virtual void DeleteSessionStorage( |
| 41 | const SessionStorageUsageInfo& usage_info) OVERRIDE; |
| 42 | virtual void SetSaveSessionStorageOnDisk() OVERRIDE; |
| 43 | virtual scoped_refptr<SessionStorageNamespace> |
| 44 | RecreateSessionStorage(const std::string& persistent_id) OVERRIDE; |
| 45 | virtual void StartScavengingUnusedSessionStorage() OVERRIDE; |
| 46 | |
| 47 | // Called to free up memory that's not strictly needed. |
| 48 | void PurgeMemory(); |
| 49 | |
| 50 | // Used by content settings to alter the behavior around |
| 51 | // what data to keep and what data to discard at shutdown. |
| 52 | // The policy is not so straight forward to describe, see |
| 53 | // the implementation for details. |
| 54 | void SetForceKeepSessionState(); |
| 55 | |
| 56 | // Called when the BrowserContext/Profile is going away. |
| 57 | void Shutdown(); |
| 58 | |
| 59 | private: |
| 60 | friend class DOMStorageMessageFilter; // for access to context() |
| 61 | friend class SessionStorageNamespaceImpl; // ditto |
| 62 | friend class base::RefCountedThreadSafe<DOMStorageContextWrapper>; |
| 63 | |
| 64 | virtual ~DOMStorageContextWrapper(); |
| 65 | DOMStorageContextImpl* context() const { return context_.get(); } |
| 66 | |
| 67 | scoped_refptr<DOMStorageContextImpl> context_; |
| 68 | |
| 69 | DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageContextWrapper); |
| 70 | }; |
| 71 | |
| 72 | } // namespace content |
| 73 | |
| 74 | #endif // CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_CONTEXT_WRAPPER_H_ |