1 /* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef IDBDatabaseCallbacks_h 27 #define IDBDatabaseCallbacks_h 28 29 #include "platform/heap/Handle.h" 30 #include "wtf/PassRefPtr.h" 31 32 namespace blink { 33 34 class DOMError; 35 class IDBDatabase; 36 37 class IDBDatabaseCallbacks : public GarbageCollectedFinalized<IDBDatabaseCallbacks> { 38 public: 39 static IDBDatabaseCallbacks* create(); 40 virtual ~IDBDatabaseCallbacks(); 41 void trace(Visitor*); 42 43 // IDBDatabaseCallbacks 44 virtual void onForcedClose(); 45 virtual void onVersionChange(int64_t oldVersion, int64_t newVersion); 46 47 virtual void onAbort(int64_t transactionId, PassRefPtrWillBeRawPtr<DOMError>); 48 virtual void onComplete(int64_t transactionId); 49 50 void connect(IDBDatabase*); 51 52 protected: 53 // Exposed to subclasses for unit tests. 54 IDBDatabaseCallbacks(); 55 56 private: 57 // The initial IDBOpenDBRequest, final IDBDatabase, and/or 58 // WebIDBDatabaseCallbacks have strong references to an IDBDatabaseCallbacks 59 // object. 60 // Oilpan: We'd like to delete an IDBDatabase object by a 61 // GC. WebIDBDatabaseCallbacks can survive the GC, and IDBDatabaseCallbacks 62 // can survive too. m_database should be a weak reference to avoid that an 63 // IDBDatabase survives the GC with the IDBDatabaseCallbacks. 64 WeakMember<IDBDatabase> m_database; 65 }; 66 67 } // namespace blink 68 69 #endif // IDBDatabaseCallbacks_h 70
