/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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 *************************************************************/



#ifndef _DBACCESS_UI_DIRECTSQL_HXX_
#define _DBACCESS_UI_DIRECTSQL_HXX_

#ifndef _SV_DIALOG_HXX
#include <vcl/dialog.hxx>
#endif
#ifndef _SVEDIT_HXX 
#include <svtools/editsyntaxhighlighter.hxx>
#endif
#ifndef _SV_FIXED_HXX 
#include <vcl/fixed.hxx>
#endif
#ifndef _SV_LSTBOX_HXX 
#include <vcl/lstbox.hxx>
#endif
#ifndef _SV_BUTTON_HXX 
#include <vcl/button.hxx>
#endif
#ifndef _COMPHELPER_STLTYPES_HXX_ 
#include <comphelper/stl_types.hxx>
#endif
#include <deque>

#ifndef _COM_SUN_STAR_SDBC_XCONNECTION_HPP_
#include <com/sun/star/sdbc/XConnection.hpp>
#endif
#ifndef _UNOTOOLS_EVENTLISTENERADAPTER_HXX_ 
#include <unotools/eventlisteneradapter.hxx>
#endif
#ifndef _DBAUI_MODULE_DBU_HXX_
#include "moduledbu.hxx"
#endif
#ifndef _OSL_MUTEX_HXX_
#include <osl/mutex.hxx>
#endif

//........................................................................
namespace dbaui
{
//........................................................................

	//====================================================================
	//= DirectSQLDialog
	//====================================================================
	class DirectSQLDialog
			:public ModalDialog
			,public ::utl::OEventListenerAdapter
	{
	protected:
        OModuleClient m_aModuleClient;
		::osl::Mutex	m_aMutex;

		FixedLine		m_aFrame;
		FixedText		m_aSQLLabel;
		MultiLineEditSyntaxHighlight	m_aSQL;
		PushButton		m_aExecute;
		FixedText		m_aHistoryLabel;
		ListBox*		m_pSQLHistory;
		FixedLine		m_aStatusFrame;
		MultiLineEdit	m_aStatus;
		FixedLine		m_aButtonSeparator;
		HelpButton		m_aHelp;
		PushButton		m_aClose;

		typedef ::std::deque< String >	StringQueue;
		StringQueue		m_aStatementHistory;	// previous statements
		StringQueue		m_aNormalizedHistory;	// previous statements, normalized to be used in the list box

		sal_Int32		m_nHistoryLimit;
		sal_Int32		m_nStatusCount;

		::com::sun::star::uno::Reference< ::com::sun::star::sdbc::XConnection >
						m_xConnection;

	public:
		DirectSQLDialog(
			Window* _pParent,
			const ::com::sun::star::uno::Reference< ::com::sun::star::sdbc::XConnection >& _rxConn);
		~DirectSQLDialog();

		/// number of history entries
		sal_Int32 getHistorySize() const;

	protected:
		void executeCurrent();
		void switchToHistory(sal_Int32 _nHistoryPos, sal_Bool _bUpdateListBox = sal_True);

		// OEventListenerAdapter
		virtual void _disposing( const ::com::sun::star::lang::EventObject& _rSource );

	protected:
		DECL_LINK( OnExecute, void* );
		DECL_LINK( OnClose, void* );
		DECL_LINK( OnListEntrySelected, void* );
		DECL_LINK( OnStatementModified, void* );

	private:
		/// adds a statement to the statement history
		void implAddToStatementHistory(const String& _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 String& _rStatement);

		/// adds a status text to the status list
		void addStatusText(const String& _rMessage);

#ifdef DBG_UTIL
		const sal_Char* impl_CheckInvariants() const;
#endif
	};

	//====================================================================
#ifdef DBG_UTIL
#define CHECK_INVARIANTS(methodname)	\
	{	\
		const sal_Char* pError = impl_CheckInvariants();	\
		if (pError)	\
			OSL_ENSURE(sal_False, (ByteString(methodname) += ByteString(": ") += ByteString(pError)).GetBuffer());	\
	}
#else
#define CHECK_INVARIANTS(methodname)
#endif

//........................................................................
}	// namespace dbaui
//........................................................................

#endif // _DBACCESS_UI_DIRECTSQL_HXX_