1 /* 2 * Copyright (C) 2010 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 IDBCursor_h 27 #define IDBCursor_h 28 29 #include "bindings/core/v8/ScriptValue.h" 30 #include "bindings/core/v8/ScriptWrappable.h" 31 #include "modules/indexeddb/IDBKey.h" 32 #include "modules/indexeddb/IDBRequest.h" 33 #include "modules/indexeddb/IndexedDB.h" 34 #include "public/platform/WebIDBCursor.h" 35 #include "public/platform/WebIDBTypes.h" 36 #include "wtf/PassRefPtr.h" 37 #include "wtf/RefPtr.h" 38 39 namespace blink { 40 41 class ExceptionState; 42 class IDBAny; 43 class IDBTransaction; 44 class ExecutionContext; 45 class SharedBuffer; 46 class WebBlobInfo; 47 48 class IDBCursor : public GarbageCollectedFinalized<IDBCursor>, public ScriptWrappable { 49 DEFINE_WRAPPERTYPEINFO(); 50 public: 51 static WebIDBCursorDirection stringToDirection(const String& modeString, ExceptionState&); 52 53 static IDBCursor* create(PassOwnPtr<WebIDBCursor>, WebIDBCursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*); 54 virtual ~IDBCursor(); 55 void dispose(); 56 void trace(Visitor*); contextWillBeDestroyed()57 void contextWillBeDestroyed() { m_backend.clear(); } 58 59 // Implement the IDL 60 const String& direction() const; 61 ScriptValue key(ScriptState*); 62 ScriptValue primaryKey(ScriptState*); 63 ScriptValue value(ScriptState*); 64 ScriptValue source(ScriptState*) const; 65 66 IDBRequest* update(ScriptState*, const ScriptValue&, ExceptionState&); 67 void advance(unsigned long, ExceptionState&); 68 void continueFunction(ScriptState*, const ScriptValue& key, ExceptionState&); 69 void continuePrimaryKey(ScriptState*, const ScriptValue& key, const ScriptValue& primaryKey, ExceptionState&); 70 IDBRequest* deleteFunction(ScriptState*, ExceptionState&); 71 isKeyDirty()72 bool isKeyDirty() const { return m_keyDirty; } isPrimaryKeyDirty()73 bool isPrimaryKeyDirty() const { return m_primaryKeyDirty; } isValueDirty()74 bool isValueDirty() const { return m_valueDirty; } 75 76 void continueFunction(IDBKey*, IDBKey* primaryKey, ExceptionState&); 77 void postSuccessHandlerCallback(); 78 bool isDeleted() const; 79 void close(); 80 void setValueReady(IDBKey*, IDBKey* primaryKey, PassRefPtr<SharedBuffer> value, PassOwnPtr<Vector<WebBlobInfo> >); idbPrimaryKey()81 IDBKey* idbPrimaryKey() const { return m_primaryKey; } request()82 IDBRequest* request() const { return m_request.get(); } isKeyCursor()83 virtual bool isKeyCursor() const { return true; } isCursorWithValue()84 virtual bool isCursorWithValue() const { return false; } 85 86 protected: 87 IDBCursor(PassOwnPtr<WebIDBCursor>, WebIDBCursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*); 88 89 private: 90 IDBObjectStore* effectiveObjectStore() const; 91 void handleBlobAcks(); 92 93 OwnPtr<WebIDBCursor> m_backend; 94 Member<IDBRequest> m_request; 95 const WebIDBCursorDirection m_direction; 96 Member<IDBAny> m_source; 97 Member<IDBTransaction> m_transaction; 98 bool m_gotValue; 99 bool m_keyDirty; 100 bool m_primaryKeyDirty; 101 bool m_valueDirty; 102 Member<IDBKey> m_key; 103 Member<IDBKey> m_primaryKey; 104 RefPtr<SharedBuffer> m_value; 105 OwnPtr<Vector<WebBlobInfo> > m_blobInfo; 106 }; 107 108 } // namespace blink 109 110 #endif // IDBCursor_h 111