LCOV - code coverage report
Current view: top level - solver/unxlngi6.pro/inc/comphelper - weakeventlistener.hxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 0 22 0.0 %
Date: 2012-08-25 Functions: 0 11 0.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 20 0.0 %

           Branch data     Line data    Source code
       1                 :            : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 :            : /*
       3                 :            :  * This file is part of the LibreOffice project.
       4                 :            :  *
       5                 :            :  * This Source Code Form is subject to the terms of the Mozilla Public
       6                 :            :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7                 :            :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8                 :            :  *
       9                 :            :  * This file incorporates work covered by the following license notice:
      10                 :            :  *
      11                 :            :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12                 :            :  *   contributor license agreements. See the NOTICE file distributed
      13                 :            :  *   with this work for additional information regarding copyright
      14                 :            :  *   ownership. The ASF licenses this file to you under the Apache
      15                 :            :  *   License, Version 2.0 (the "License"); you may not use this file
      16                 :            :  *   except in compliance with the License. You may obtain a copy of
      17                 :            :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18                 :            :  */
      19                 :            : 
      20                 :            : #ifndef COMPHELPER_WEAKEVENTLISTENER_HXX
      21                 :            : #define COMPHELPER_WEAKEVENTLISTENER_HXX
      22                 :            : 
      23                 :            : #include <cppuhelper/compbase1.hxx>
      24                 :            : #include <com/sun/star/lang/XComponent.hpp>
      25                 :            : #include <com/sun/star/uno/XWeak.hpp>
      26                 :            : #include <cppuhelper/weakref.hxx>
      27                 :            : #include <comphelper/broadcasthelper.hxx>
      28                 :            : #include "comphelper/comphelperdllapi.h"
      29                 :            : 
      30                 :            : //.........................................................................
      31                 :            : namespace comphelper
      32                 :            : {
      33                 :            : //.........................................................................
      34                 :            : 
      35                 :            :     //=====================================================================
      36                 :            :     //= OWeakListenerAdapterBase
      37                 :            :     //=====================================================================
      38                 :            :     /** (the base for) an adapter which allows to add as listener to a foreign component, without
      39                 :            :         being held hard.
      40                 :            : 
      41                 :            :         <p>The idea is that this adapter is added as listener to a foreign component, which usually
      42                 :            :         holds it's listener hard. The adapter itself knows the real listener as weak reference,
      43                 :            :         thus not affecting it's life time.</p>
      44                 :            :     */
      45                 :            :     class OWeakListenerAdapterBase : public OBaseMutex
      46                 :            :     {
      47                 :            :     private:
      48                 :            :         ::com::sun::star::uno::WeakReference< ::com::sun::star::uno::XInterface >
      49                 :            :                 m_aListener;
      50                 :            :         ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >
      51                 :            :                 m_xBroadcaster;
      52                 :            : 
      53                 :            :     protected:
      54                 :            :         inline ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >
      55                 :          0 :                 getListener( ) const
      56                 :            :         {
      57                 :          0 :             return m_aListener.get();
      58                 :            :         }
      59                 :            : 
      60                 :            :         inline const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >&
      61                 :          0 :                 getBroadcaster( ) const
      62                 :            :         {
      63                 :          0 :             return m_xBroadcaster;
      64                 :            :         }
      65                 :            : 
      66                 :          0 :         inline void resetListener( )
      67                 :            :         {
      68                 :          0 :             m_aListener.clear();
      69                 :          0 :         }
      70                 :            : 
      71                 :            : 
      72                 :            :     protected:
      73                 :          0 :         inline OWeakListenerAdapterBase(
      74                 :            :             const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XWeak >& _rxListener,
      75                 :            :             const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _rxBroadcaster
      76                 :            :         )
      77                 :            :             :m_aListener    (  _rxListener )
      78         [ #  # ]:          0 :             ,m_xBroadcaster ( _rxBroadcaster )
      79                 :            :         {
      80                 :          0 :         }
      81                 :            : 
      82                 :            :     protected:
      83                 :            :         virtual ~OWeakListenerAdapterBase();
      84                 :            :     };
      85                 :            : 
      86                 :            : 
      87                 :            :     //=====================================================================
      88                 :            :     //= OWeakListenerAdapter
      89                 :            :     //=====================================================================
      90                 :            :     template< class BROADCASTER, class LISTENER >
      91                 :            :     /** yet another base for weak listener adapters, this time with some type safety
      92                 :            : 
      93                 :            :         <p>Note that derived classes need to overwrite all virtual methods of their interface
      94                 :            :         except XEventListener::disposing, and forward it to their master listener.</p>
      95                 :            : 
      96                 :            :         <p>Addtionally, derived classes need to add themself as listener to the broadcaster,
      97                 :            :         as this can't be done in a generic way</p>
      98                 :            :     */
      99 [ #  # ][ #  # ]:          0 :     class OWeakListenerAdapter
     100                 :            :             :public ::cppu::WeakComponentImplHelper1 < LISTENER >
     101                 :            :             ,public OWeakListenerAdapterBase
     102                 :            :     {
     103                 :            :     protected:
     104                 :            :         /** ctor
     105                 :            :             <p>Note that derived classes still need to add themself as listener to the broadcaster,
     106                 :            :             as this can't be done in a generic way</p>
     107                 :            :         */
     108                 :            :         OWeakListenerAdapter(
     109                 :            :             const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XWeak >& _rxListener,
     110                 :            :             const ::com::sun::star::uno::Reference< BROADCASTER >& _rxBroadcaster
     111                 :            :         );
     112                 :            : 
     113                 :            :     protected:
     114                 :          0 :         inline  ::com::sun::star::uno::Reference< LISTENER > getListener( ) const
     115                 :            :         {
     116         [ #  # ]:          0 :             return  ::com::sun::star::uno::Reference< LISTENER >( OWeakListenerAdapterBase::getListener(), ::com::sun::star::uno::UNO_QUERY );
     117                 :            :         }
     118                 :            : 
     119                 :            :         // XEventListener overridables
     120                 :            :         virtual void SAL_CALL disposing( const ::com::sun::star::lang::EventObject& Source ) throw (::com::sun::star::uno::RuntimeException);
     121                 :            : 
     122                 :            :     protected:
     123                 :            :         // OComponentHelper overridables
     124                 :            :         // to be overridden, again - the derived class should revoke the listener from the broadcaster
     125                 :            :         virtual void SAL_CALL disposing( ) = 0;
     126                 :            :     };
     127                 :            : 
     128                 :            :     //=====================================================================
     129                 :            :     //= OWeakEventListenerAdapter
     130                 :            :     //=====================================================================
     131                 :            :     typedef OWeakListenerAdapter    <   ::com::sun::star::lang::XComponent
     132                 :            :                                     ,   ::com::sun::star::lang::XEventListener
     133                 :            :                                     >   OWeakEventListenerAdapter_Base;
     134                 :            :     /** the most simple listener adapter: for XEventListeners at XComponents
     135                 :            :     */
     136         [ #  # ]:          0 :     class COMPHELPER_DLLPUBLIC OWeakEventListenerAdapter : public OWeakEventListenerAdapter_Base
     137                 :            :     {
     138                 :            :     public:
     139                 :            :         OWeakEventListenerAdapter(
     140                 :            :             ::com::sun::star::uno::Reference< ::com::sun::star::uno::XWeak > _rxListener,
     141                 :            :             ::com::sun::star::uno::Reference< ::com::sun::star::lang::XComponent > _rxBroadcaster
     142                 :            :         );
     143                 :            : 
     144                 :            :         // nothing to do except an own ctor - the forwarding of the "disposing" is already done
     145                 :            :         // in the base class
     146                 :            : 
     147                 :            :     protected:
     148                 :            :         using OWeakEventListenerAdapter_Base::disposing;
     149                 :            :         virtual void SAL_CALL disposing( );
     150                 :            :     };
     151                 :            : 
     152                 :            :     //=====================================================================
     153                 :            :     //= OWeakListenerAdapter
     154                 :            :     //=====================================================================
     155                 :            :     //---------------------------------------------------------------------
     156                 :            :     template< class BROADCASTER, class LISTENER >
     157                 :          0 :     OWeakListenerAdapter< BROADCASTER, LISTENER >::OWeakListenerAdapter(
     158                 :            :         const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XWeak >& _rxListener,
     159                 :            :         const ::com::sun::star::uno::Reference< BROADCASTER >& _rxBroadcaster
     160                 :            :     )
     161                 :            :         : ::cppu::WeakComponentImplHelper1< LISTENER >( m_aMutex )
     162         [ #  # ]:          0 :         , OWeakListenerAdapterBase( _rxListener, _rxBroadcaster )
     163                 :            :     {
     164                 :          0 :     }
     165                 :            : 
     166                 :            :     //---------------------------------------------------------------------
     167                 :            :     template< class BROADCASTER, class LISTENER >
     168                 :          0 :     void SAL_CALL OWeakListenerAdapter< BROADCASTER, LISTENER >::disposing( const ::com::sun::star::lang::EventObject& _rSource ) throw (::com::sun::star::uno::RuntimeException)
     169                 :            :     {
     170         [ #  # ]:          0 :         ::com::sun::star::uno::Reference< LISTENER > xListener( getListener() );
     171         [ #  # ]:          0 :         if ( xListener.is() )
     172 [ #  # ][ #  # ]:          0 :             xListener->disposing( _rSource );
     173                 :          0 :     }
     174                 :            : 
     175                 :            : //.........................................................................
     176                 :            : }   // namespace comphelper
     177                 :            : //.........................................................................
     178                 :            : 
     179                 :            : #endif// COMPHELPER_WEAKEVENTLISTENER_HXX
     180                 :            : 
     181                 :            : 
     182                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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