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diff --git a/dbaccess/source/ui/inc/directsql.hxx b/dbaccess/source/ui/inc/directsql.hxx
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+++ b/dbaccess/source/ui/inc/directsql.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_DBACCESS_SOURCE_UI_INC_DIRECTSQL_HXX
+#define INCLUDED_DBACCESS_SOURCE_UI_INC_DIRECTSQL_HXX
+
+#include <sal/config.h>
+
+#include <comphelper/syntaxhighlight.hxx>
+#include <sal/log.hxx>
+#include <svtools/colorcfg.hxx>
+#include <vcl/timer.hxx>
+#include <vcl/weld.hxx>
+#include <deque>
+
+#include <com/sun/star/sdbc/XConnection.hpp>
+#include <unotools/eventlisteneradapter.hxx>
+#include <osl/mutex.hxx>
+
+#include <svx/weldeditview.hxx>
+
+struct ImplSVEvent;
+
+namespace dbaui
+{
+    class SQLEditView : public WeldEditView
+    {
+    private:
+        void DoBracketHilight(sal_uInt16 nKey);
+    public:
+        SQLEditView();
+        virtual bool KeyInput(const KeyEvent& rKEvt) override;
+    };
+
+    // DirectSQLDialog
+    class DirectSQLDialog final
+            : public weld::GenericDialogController
+            , public ::utl::OEventListenerAdapter
+    {
+        ::osl::Mutex    m_aMutex;
+
+        std::unique_ptr<weld::Button> m_xExecute;
+        std::unique_ptr<weld::ComboBox> m_xSQLHistory;
+        std::unique_ptr<weld::TextView> m_xStatus;
+        std::unique_ptr<weld::CheckButton> m_xShowOutput;
+        std::unique_ptr<weld::TextView> m_xOutput;
+        std::unique_ptr<weld::Button> m_xClose;
+        std::unique_ptr<SQLEditView> m_xSQL;
+        std::unique_ptr<weld::CustomWeld> m_xSQLEd;
+
+        Timer m_aUpdateDataTimer;
+        const SyntaxHighlighter m_aHighlighter;
+        const svtools::ColorConfig m_aColorConfig;
+
+        typedef std::deque< OUString >  StringQueue;
+        StringQueue     m_aStatementHistory;    // previous statements
+        StringQueue     m_aNormalizedHistory;   // previous statements, normalized to be used in the list box
+
+        sal_Int32       m_nStatusCount;
+        bool            m_bInUpdate;
+
+        css::uno::Reference< css::sdbc::XConnection >
+                        m_xConnection;
+
+        ImplSVEvent* m_pClosingEvent;
+
+    public:
+        DirectSQLDialog(
+            weld::Window* _pParent,
+            const css::uno::Reference< css::sdbc::XConnection >& _rxConn);
+        virtual ~DirectSQLDialog() override;
+
+        /// number of history entries
+        sal_Int32 getHistorySize() const;
+
+    private:
+        void executeCurrent();
+        void switchToHistory(sal_Int32 _nHistoryPos);
+
+        Color GetColorValue(TokenType aToken);
+
+        void UpdateData();
+
+        // OEventListenerAdapter
+        virtual void _disposing( const css::lang::EventObject& _rSource ) override;
+
+        DECL_LINK( OnExecute, weld::Button&, void );
+        DECL_LINK( OnClose, void*, void );
+        DECL_LINK( OnCloseClick, weld::Button&, void );
+        DECL_LINK( OnListEntrySelected, weld::ComboBox&, void );
+        DECL_LINK( OnStatementModified, LinkParamNone*, void );
+        DECL_LINK( ImplUpdateDataHdl, Timer*, void );
+
+        /// adds a statement to the statement history
+        void implAddToStatementHistory(const OUString& _rStatement);
+
+        /// ensures that our history has at most m_nHistoryLimit entries
+        void implEnsureHistoryLimit();
+
+        /// executes the statement given, adds the status to the status list
+        void implExecuteStatement(const OUString& _rStatement);
+
+        /// adds a status text to the status list
+        void addStatusText(const OUString& _rMessage);
+
+        /// adds a status text to the output list
+        void addOutputText(const OUString& _rMessage);
+
+        /// displays resultset
+        void display(const css::uno::Reference< css::sdbc::XResultSet >& xRS);
+
+#ifdef DBG_UTIL
+        const char* impl_CheckInvariants() const;
+#endif
+    };
+
+#ifdef DBG_UTIL
+#define CHECK_INVARIANTS(methodname)    \
+    {   \
+        const char* pError = impl_CheckInvariants();    \
+        if (pError) \
+            SAL_WARN("dbaccess.ui", methodname ": " << pError);   \
+    }
+#else
+#define CHECK_INVARIANTS(methodname)
+#endif
+
+}   // namespace dbaui
+
+#endif // INCLUDED_DBACCESS_SOURCE_UI_INC_DIRECTSQL_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */