/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: UndoEnv.hxx,v $
 * $Revision: 1.4 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
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 ************************************************************************/
#ifndef INCLUDED_UNDOENV_HXX
#define INCLUDED_UNDOENV_HXX

#include <com/sun/star/beans/XPropertyChangeListener.hpp>
#include <com/sun/star/beans/PropertyChangeEvent.hpp>
#include <com/sun/star/container/XContainerListener.hpp>
#include <com/sun/star/report/XReportDefinition.hpp>
#include <memory>
#include <svtools/lstner.hxx>

namespace rptui
{
    class OXUndoEnvironmentImpl;

    //========================================================================
    class REPORTDESIGN_DLLPUBLIC OXUndoEnvironment
        : public ::cppu::WeakImplHelper3<   ::com::sun::star::beans::XPropertyChangeListener
                                        ,   ::com::sun::star::container::XContainerListener
                                        ,   ::com::sun::star::util::XModifyListener
                                        >
        , public SfxListener
    {
        const ::std::auto_ptr<OXUndoEnvironmentImpl> m_pImpl;

        OXUndoEnvironment(const OXUndoEnvironment&);
        OXUndoEnvironment& operator=(const OXUndoEnvironment&);

    protected:
        virtual ~OXUndoEnvironment();

    public:
        OXUndoEnvironment(OReportModel& _rModel);

        class OUndoEnvLock
        {
            OXUndoEnvironment& m_rUndoEnv;
        public:
            OUndoEnvLock(OXUndoEnvironment& _rUndoEnv): m_rUndoEnv(_rUndoEnv){m_rUndoEnv.Lock();}
            ~OUndoEnvLock(){ m_rUndoEnv.UnLock(); }
        };

        void Lock();
        void UnLock();
        sal_Bool IsLocked() const;

        // access control
        struct Accessor { friend class OReportModel; private: Accessor() { } };
        void Clear(const Accessor& _r);

        void AddElement(const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>& Element);
        void RemoveElement(const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>& Element);

        void AddSection( const ::com::sun::star::uno::Reference< ::com::sun::star::report::XSection>& _xSection);
        void RemoveSection( const ::com::sun::star::uno::Reference< ::com::sun::star::report::XSection>& _xSection );
        /** removes the section from the page out of the undo env
        *
        * \param _pPage
        */
        void RemoveSection(OReportPage* _pPage);

    protected:
        // XEventListener
        virtual void SAL_CALL disposing(const ::com::sun::star::lang::EventObject& Source) throw( ::com::sun::star::uno::RuntimeException );

        // XPropertyChangeListener
        virtual void SAL_CALL propertyChange(const ::com::sun::star::beans::PropertyChangeEvent& evt) throw(::com::sun::star::uno::RuntimeException);

        // XContainerListener
        virtual void SAL_CALL elementInserted(const ::com::sun::star::container::ContainerEvent& rEvent) throw(::com::sun::star::uno::RuntimeException);
        virtual void SAL_CALL elementReplaced(const ::com::sun::star::container::ContainerEvent& rEvent) throw(::com::sun::star::uno::RuntimeException);
        virtual void SAL_CALL elementRemoved(const ::com::sun::star::container::ContainerEvent& rEvent) throw(::com::sun::star::uno::RuntimeException);

        // XModifyListener
        virtual void SAL_CALL modified( const ::com::sun::star::lang::EventObject& aEvent ) throw (::com::sun::star::uno::RuntimeException);

        void ModeChanged();

        virtual void Notify( SfxBroadcaster& rBC, const SfxHint& rHint );

    private:
        void TogglePropertyListening(const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>& Element);

        void    implSetModified();

        void    switchListening( const ::com::sun::star::uno::Reference< ::com::sun::star::container::XIndexAccess >& _rxContainer, bool _bStartListening ) SAL_THROW(());
        void    switchListening( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _rxObject, bool _bStartListening ) SAL_THROW(());

        ::std::vector< ::com::sun::star::uno::Reference< ::com::sun::star::container::XChild> >::const_iterator
            getSection(const ::com::sun::star::uno::Reference< ::com::sun::star::container::XChild>& _xContainer) const;
    };

}
#endif //