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             : 
      21             : #include <comphelper/SelectionMultiplex.hxx>
      22             : #include <osl/diagnose.h>
      23             : 
      24             : 
      25             : namespace comphelper
      26             : {
      27             : 
      28             : 
      29             : using namespace ::com::sun::star::uno;
      30             : using namespace ::com::sun::star::lang;
      31             : using namespace ::com::sun::star::view;
      32             : 
      33           0 : OSelectionChangeListener::~OSelectionChangeListener()
      34             : {
      35           0 :     if (m_pAdapter)
      36           0 :         m_pAdapter->dispose();
      37           0 : }
      38             : 
      39             : 
      40           0 : void OSelectionChangeListener::_disposing(const EventObject&)
      41             :     throw (RuntimeException, std::exception)
      42             : {
      43             :     // nothing to do here
      44           0 : }
      45             : 
      46             : 
      47           0 : void OSelectionChangeListener::setAdapter(OSelectionChangeMultiplexer* pAdapter)
      48             : {
      49           0 :     if (m_pAdapter)
      50             :     {
      51           0 :         ::osl::MutexGuard aGuard(m_rMutex);
      52           0 :         m_pAdapter->release();
      53           0 :         m_pAdapter = NULL;
      54             :     }
      55             : 
      56           0 :     if (pAdapter)
      57             :     {
      58           0 :         ::osl::MutexGuard aGuard(m_rMutex);
      59           0 :         m_pAdapter = pAdapter;
      60           0 :         m_pAdapter->acquire();
      61             :     }
      62           0 : }
      63             : 
      64           0 : OSelectionChangeMultiplexer::OSelectionChangeMultiplexer(OSelectionChangeListener* _pListener, const  Reference< XSelectionSupplier>& _rxSet, bool _bAutoReleaseSet)
      65             :             :m_xSet(_rxSet)
      66             :             ,m_pListener(_pListener)
      67             :             ,m_nLockCount(0)
      68             :             ,m_bListening(false)
      69           0 :             ,m_bAutoSetRelease(_bAutoReleaseSet)
      70             : {
      71           0 :     m_pListener->setAdapter(this);
      72           0 :     osl_atomic_increment(&m_refCount);
      73             :     {
      74           0 :         Reference< XSelectionChangeListener> xPreventDelete(this);
      75           0 :         m_xSet->addSelectionChangeListener(xPreventDelete);
      76             :     }
      77           0 :     osl_atomic_decrement(&m_refCount);
      78           0 : }
      79             : 
      80             : 
      81           0 : OSelectionChangeMultiplexer::~OSelectionChangeMultiplexer()
      82             : {
      83           0 : }
      84             : 
      85             : 
      86           0 : void OSelectionChangeMultiplexer::lock()
      87             : {
      88           0 :     ++m_nLockCount;
      89           0 : }
      90             : 
      91             : 
      92           0 : void OSelectionChangeMultiplexer::unlock()
      93             : {
      94           0 :     --m_nLockCount;
      95           0 : }
      96             : 
      97             : 
      98           0 : void OSelectionChangeMultiplexer::dispose()
      99             : {
     100           0 :     if (m_bListening)
     101             :     {
     102           0 :         Reference< XSelectionChangeListener> xPreventDelete(this);
     103             : 
     104           0 :         m_xSet->removeSelectionChangeListener(xPreventDelete);
     105             : 
     106           0 :         m_pListener->setAdapter(NULL);
     107             : 
     108           0 :         m_pListener = NULL;
     109           0 :         m_bListening = false;
     110             : 
     111           0 :         if (m_bAutoSetRelease)
     112           0 :             m_xSet = NULL;
     113             :     }
     114           0 : }
     115             : 
     116             : // XEventListener
     117             : 
     118           0 : void SAL_CALL OSelectionChangeMultiplexer::disposing( const  EventObject& _rSource) throw( RuntimeException, std::exception)
     119             : {
     120           0 :     if (m_pListener)
     121             :     {
     122             :          // tell the listener
     123           0 :         if (!locked())
     124           0 :             m_pListener->_disposing(_rSource);
     125             :         // disconnect the listener
     126           0 :         if (m_pListener)    // may have been reset whilest calling into _disposing
     127           0 :             m_pListener->setAdapter(NULL);
     128             :     }
     129             : 
     130           0 :     m_pListener = NULL;
     131           0 :     m_bListening = false;
     132             : 
     133           0 :     if (m_bAutoSetRelease)
     134           0 :         m_xSet = NULL;
     135           0 : }
     136             : 
     137             : // XSelectionChangeListener
     138             : 
     139           0 : void SAL_CALL OSelectionChangeMultiplexer::selectionChanged( const  EventObject& _rEvent ) throw( RuntimeException, std::exception)
     140             : {
     141           0 :     if (m_pListener && !locked())
     142           0 :         m_pListener->_selectionChanged(_rEvent);
     143           0 : }
     144             : 
     145             : }
     146             : 
     147             : 
     148             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */