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/v8/ScriptValue.h" 30 #include "bindings/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 WebBlobInfo; 42 43 } // namespace blink 44 45 namespace WebCore { 46 47 class ExceptionState; 48 class IDBAny; 49 class IDBTransaction; 50 class ExecutionContext; 51 class SharedBuffer; 52 53 class IDBCursor : public GarbageCollectedFinalized<IDBCursor>, public ScriptWrappable { 54 public: 55 static const AtomicString& directionNext(); 56 static const AtomicString& directionNextUnique(); 57 static const AtomicString& directionPrev(); 58 static const AtomicString& directionPrevUnique(); 59 60 static blink::WebIDBCursorDirection stringToDirection(const String& modeString, ExceptionState&); 61 static const AtomicString& directionToString(unsigned short mode); 62 63 static IDBCursor* create(PassOwnPtr<blink::WebIDBCursor>, blink::WebIDBCursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*); 64 virtual ~IDBCursor(); 65 void trace(Visitor*); contextWillBeDestroyed()66 void contextWillBeDestroyed() { m_backend.clear(); } 67 68 // Implement the IDL direction()69 const String& direction() const { return directionToString(m_direction); } 70 ScriptValue key(ScriptState*); 71 ScriptValue primaryKey(ScriptState*); 72 ScriptValue value(ScriptState*); 73 ScriptValue source(ScriptState*) const; 74 75 IDBRequest* update(ScriptState*, ScriptValue&, ExceptionState&); 76 void advance(unsigned long, ExceptionState&); 77 void continueFunction(ScriptState*, const ScriptValue& key, ExceptionState&); 78 void continuePrimaryKey(ScriptState*, const ScriptValue& key, const ScriptValue& primaryKey, ExceptionState&); 79 IDBRequest* deleteFunction(ScriptState*, ExceptionState&); 80 isKeyDirty()81 bool isKeyDirty() const { return m_keyDirty; } isPrimaryKeyDirty()82 bool isPrimaryKeyDirty() const { return m_primaryKeyDirty; } isValueDirty()83 bool isValueDirty() const { return m_valueDirty; } 84 85 void continueFunction(IDBKey*, IDBKey* primaryKey, ExceptionState&); 86 void postSuccessHandlerCallback(); 87 bool isDeleted() const; 88 void close(); 89 void setValueReady(IDBKey*, IDBKey* primaryKey, PassRefPtr<SharedBuffer> value, PassOwnPtr<Vector<blink::WebBlobInfo> >); idbPrimaryKey()90 IDBKey* idbPrimaryKey() const { return m_primaryKey; } request()91 IDBRequest* request() const { return m_request.get(); } isKeyCursor()92 virtual bool isKeyCursor() const { return true; } isCursorWithValue()93 virtual bool isCursorWithValue() const { return false; } 94 95 protected: 96 IDBCursor(PassOwnPtr<blink::WebIDBCursor>, blink::WebIDBCursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*); 97 98 private: 99 IDBObjectStore* effectiveObjectStore() const; 100 void handleBlobAcks(); 101 102 OwnPtr<blink::WebIDBCursor> m_backend; 103 Member<IDBRequest> m_request; 104 const blink::WebIDBCursorDirection m_direction; 105 Member<IDBAny> m_source; 106 Member<IDBTransaction> m_transaction; 107 bool m_gotValue; 108 bool m_keyDirty; 109 bool m_primaryKeyDirty; 110 bool m_valueDirty; 111 Member<IDBKey> m_key; 112 Member<IDBKey> m_primaryKey; 113 RefPtr<SharedBuffer> m_value; 114 OwnPtr<Vector<blink::WebBlobInfo> > m_blobInfo; 115 }; 116 117 } // namespace WebCore 118 119 #endif // IDBCursor_h 120