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 * 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
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#ifndef INCLUDED_EXTENSIONS_SOURCE_BIBLIOGRAPHY_LOADLISTENERADAPTER_HXX
#define INCLUDED_EXTENSIONS_SOURCE_BIBLIOGRAPHY_LOADLISTENERADAPTER_HXX

#include <osl/mutex.hxx>
#include <com/sun/star/lang/XComponent.hpp>
#include <cppuhelper/implbase.hxx>
#include <com/sun/star/form/XLoadable.hpp>


namespace bib
{


    class OComponentAdapterBase;

    class OComponentListener
    {
        friend class OComponentAdapterBase;

    private:
        OComponentAdapterBase*  m_pAdapter;
        ::osl::Mutex&           m_rMutex;
    protected:
        explicit OComponentListener( ::osl::Mutex& _rMutex )
            :m_pAdapter( nullptr )
            ,m_rMutex( _rMutex )
        {
        }

        virtual ~OComponentListener();

    protected:
        void setAdapter( OComponentAdapterBase* _pAdapter );
    };

    class OComponentAdapterBase
    {
        friend class OComponentListener;

    private:
        css::uno::Reference< css::lang::XComponent >  m_xComponent;
        OComponentListener*                 m_pListener;
        sal_Int32                           m_nLockCount;
        bool                                m_bListening    : 1;

        // impl method for dispose - virtual, 'cause you at least need to remove the listener from the broadcaster
        virtual void disposing() = 0;

    protected:
        // attribute access for derivees
        const css::uno::Reference< css::lang::XComponent >&
                                getComponent() const    { return m_xComponent; }
        OComponentListener*     getListener()           { return m_pListener; }

        // to be called by derivees which started listening at the component
        virtual void    startComponentListening() = 0;

        virtual ~OComponentAdapterBase();

    public:
        explicit OComponentAdapterBase(
            const css::uno::Reference< css::lang::XComponent >& _rxComp
        );

        // late construction
        // can be called from within you ctor, to have you're object fully initialized at the moment of
        // the call (which would not be the case when calling this ctor)
        void Init( OComponentListener* _pListener );

    // base for ref-counting, implemented by OComponentAdapter
        virtual void SAL_CALL acquire(  ) throw () = 0;
        virtual void SAL_CALL release(  ) throw () = 0;

    // helper
        /// get the lock count
        sal_Int32   locked() const { return m_nLockCount; }

        /// dispose the object - stop listening and such
        void dispose();

    protected:
    // XEventListener
        virtual void SAL_CALL disposing( const  css::lang::EventObject& Source ) throw( css::uno::RuntimeException, std::exception);
    };

    class OLoadListener : public OComponentListener
    {
        friend class OLoadListenerAdapter;

    protected:
        explicit OLoadListener( ::osl::Mutex& _rMutex ) : OComponentListener( _rMutex ) { }

    // XLoadListener equivalents
        virtual void _loaded( const css::lang::EventObject& aEvent ) = 0;
        virtual void _unloading( const css::lang::EventObject& aEvent ) = 0;
        virtual void _unloaded( const css::lang::EventObject& aEvent ) = 0;
        virtual void _reloading( const css::lang::EventObject& aEvent ) = 0;
        virtual void _reloaded( const css::lang::EventObject& aEvent ) = 0;
    };

    typedef ::cppu::WeakImplHelper< css::form::XLoadListener >    OLoadListenerAdapter_Base;
    class OLoadListenerAdapter
        :public OLoadListenerAdapter_Base
        ,public OComponentAdapterBase
    {
    protected:
        OLoadListener*      getLoadListener( )  { return static_cast< OLoadListener* >( getListener() ); }

    protected:
        virtual void    disposing() override;
        virtual void    startComponentListening() override;

    public:
        explicit OLoadListenerAdapter(
            const css::uno::Reference< css::form::XLoadable >& _rxLoadable
        );


        virtual void SAL_CALL acquire(  ) throw () override;
        virtual void SAL_CALL release(  ) throw () override;

    protected:
    // XEventListener
        virtual void SAL_CALL disposing( const  css::lang::EventObject& _rSource ) throw( css::uno::RuntimeException, std::exception) override;

    // XLoadListener
        virtual void SAL_CALL loaded( const css::lang::EventObject& aEvent ) throw (css::uno::RuntimeException, std::exception) override;
        virtual void SAL_CALL unloading( const css::lang::EventObject& aEvent ) throw (css::uno::RuntimeException, std::exception) override;
        virtual void SAL_CALL unloaded( const css::lang::EventObject& aEvent ) throw (css::uno::RuntimeException, std::exception) override;
        virtual void SAL_CALL reloading( const css::lang::EventObject& aEvent ) throw (css::uno::RuntimeException, std::exception) override;
        virtual void SAL_CALL reloaded( const css::lang::EventObject& aEvent ) throw (css::uno::RuntimeException, std::exception) override;
    };


}   // namespace bib


#endif // INCLUDED_EXTENSIONS_SOURCE_BIBLIOGRAPHY_LOADLISTENERADAPTER_HXX

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