root/Source/modules/webdatabase/SQLTransaction.h

INCLUDED FROM

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#ifndef SQLTransaction_h
#define SQLTransaction_h

#include "bindings/v8/ScriptWrappable.h"
#include "heap/Handle.h"
#include "modules/webdatabase/AbstractSQLTransaction.h"
#include "modules/webdatabase/SQLCallbackWrapper.h"
#include "modules/webdatabase/SQLStatement.h"
#include "modules/webdatabase/SQLTransactionStateMachine.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefPtr.h"

namespace WebCore {

class AbstractSQLTransactionBackend;
class Database;
class ExceptionState;
class SQLErrorData;
class SQLStatementCallback;
class SQLStatementErrorCallback;
class SQLTransactionCallback;
class SQLTransactionErrorCallback;
class SQLValue;
class VoidCallback;

class SQLTransaction FINAL : public AbstractSQLTransaction, public SQLTransactionStateMachine<SQLTransaction>, public ScriptWrappable {
public:
    static PassRefPtrWillBeRawPtr<SQLTransaction> create(Database*, PassOwnPtr<SQLTransactionCallback>,
        PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<SQLTransactionErrorCallback>,
        bool readOnly);
    virtual void trace(Visitor*) OVERRIDE;

    void performPendingCallback();

    void executeSQL(const String& sqlStatement, const Vector<SQLValue>& arguments,
        PassOwnPtr<SQLStatementCallback>, PassOwnPtr<SQLStatementErrorCallback>, ExceptionState&);

    Database* database() { return m_database.get(); }

    PassOwnPtr<SQLTransactionErrorCallback> releaseErrorCallback();

private:
    SQLTransaction(Database*, PassOwnPtr<SQLTransactionCallback>,
        PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<SQLTransactionErrorCallback>,
        bool readOnly);

    void clearCallbackWrappers();

    // APIs called from the backend published via AbstractSQLTransaction:
    virtual void requestTransitToState(SQLTransactionState) OVERRIDE;
    virtual bool hasCallback() const OVERRIDE;
    virtual bool hasSuccessCallback() const OVERRIDE;
    virtual bool hasErrorCallback() const OVERRIDE;
    virtual void setBackend(AbstractSQLTransactionBackend*) OVERRIDE;

    // State Machine functions:
    virtual StateFunction stateFunctionFor(SQLTransactionState) OVERRIDE;
    bool computeNextStateAndCleanupIfNeeded();

    // State functions:
    SQLTransactionState deliverTransactionCallback();
    SQLTransactionState deliverTransactionErrorCallback();
    SQLTransactionState deliverStatementCallback();
    SQLTransactionState deliverQuotaIncreaseCallback();
    SQLTransactionState deliverSuccessCallback();

    SQLTransactionState unreachableState();
    SQLTransactionState sendToBackendState();

    SQLTransactionState nextStateForTransactionError();

    RefPtrWillBeMember<Database> m_database;
    RefPtrWillBeMember<AbstractSQLTransactionBackend> m_backend;
    SQLCallbackWrapper<SQLTransactionCallback> m_callbackWrapper;
    SQLCallbackWrapper<VoidCallback> m_successCallbackWrapper;
    SQLCallbackWrapper<SQLTransactionErrorCallback> m_errorCallbackWrapper;

    bool m_executeSqlAllowed;
    OwnPtr<SQLErrorData> m_transactionError;

    bool m_readOnly;
};

} // namespace WebCore

#endif // SQLTransaction_h