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       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             : #include "controlfeatureinterception.hxx"
      21             : #include "urltransformer.hxx"
      22             : 
      23             : 
      24             : namespace frm
      25             : {
      26             : 
      27             : 
      28             :     using namespace ::com::sun::star::uno;
      29             :     using namespace ::com::sun::star::frame;
      30             :     using namespace ::com::sun::star::util;
      31             :     using namespace ::com::sun::star::lang;
      32             : 
      33             : 
      34             :     //= ControlFeatureInterception
      35             : 
      36             : 
      37           0 :     ControlFeatureInterception::ControlFeatureInterception( const Reference< XComponentContext >& _rxORB )
      38           0 :         :m_pUrlTransformer( new UrlTransformer( _rxORB ) )
      39             :     {
      40           0 :     }
      41             : 
      42             : 
      43           0 :     void SAL_CALL ControlFeatureInterception::registerDispatchProviderInterceptor( const Reference< XDispatchProviderInterceptor >& _rxInterceptor ) throw (RuntimeException )
      44             :     {
      45           0 :         if ( !_rxInterceptor.is() )
      46             :         {
      47             :             OSL_FAIL( "ControlFeatureInterception::registerDispatchProviderInterceptor: invalid interceptor!" );
      48           0 :             return;
      49             :         }
      50             : 
      51           0 :         if ( m_xFirstDispatchInterceptor.is() )
      52             :         {
      53             :             // there is already an interceptor; the new one will become its master
      54           0 :             Reference< XDispatchProvider > xFirstProvider( m_xFirstDispatchInterceptor, UNO_QUERY );
      55           0 :             _rxInterceptor->setSlaveDispatchProvider( xFirstProvider );
      56           0 :             m_xFirstDispatchInterceptor->setMasterDispatchProvider( xFirstProvider );
      57             :         }
      58             : 
      59             :         // we are the master of the chain's first interceptor
      60           0 :         m_xFirstDispatchInterceptor = _rxInterceptor;
      61           0 :         m_xFirstDispatchInterceptor->setMasterDispatchProvider( NULL );
      62             :             // it's the first of the interceptor chain
      63             :     }
      64             : 
      65             : 
      66           0 :     void SAL_CALL ControlFeatureInterception::releaseDispatchProviderInterceptor( const Reference< XDispatchProviderInterceptor >& _rxInterceptor ) throw (RuntimeException )
      67             :     {
      68           0 :         if ( !_rxInterceptor.is() )
      69             :         {
      70             :             OSL_FAIL( "ControlFeatureInterception::releaseDispatchProviderInterceptor: invalid interceptor!" );
      71           0 :             return;
      72             :         }
      73             : 
      74           0 :         Reference< XDispatchProviderInterceptor >  xChainWalk( m_xFirstDispatchInterceptor );
      75             : 
      76           0 :         if ( m_xFirstDispatchInterceptor == _rxInterceptor )
      77             :         {   // our chain will have a new first element
      78           0 :             Reference< XDispatchProviderInterceptor >  xSlave( m_xFirstDispatchInterceptor->getSlaveDispatchProvider(), UNO_QUERY );
      79           0 :             m_xFirstDispatchInterceptor = xSlave;
      80             :         }
      81             :         // do this before removing the interceptor from the chain as we won't know it's slave afterwards)
      82             : 
      83           0 :         while ( xChainWalk.is() )
      84             :         {
      85             :             // walk along the chain of interceptors and look for the interceptor that has to be removed
      86           0 :             Reference< XDispatchProviderInterceptor >  xSlave( xChainWalk->getSlaveDispatchProvider(), UNO_QUERY );
      87             : 
      88           0 :             if ( xChainWalk == _rxInterceptor )
      89             :             {
      90             :                 // old master may be an interceptor too
      91           0 :                 Reference< XDispatchProviderInterceptor >  xMaster( xChainWalk->getMasterDispatchProvider(), UNO_QUERY );
      92             : 
      93             :                 // unchain the interceptor that has to be removed
      94           0 :                 xChainWalk->setSlaveDispatchProvider( NULL );
      95           0 :                 xChainWalk->setMasterDispatchProvider( NULL );
      96             : 
      97             :                 // reconnect the chain
      98           0 :                 if ( xMaster.is() )
      99             :                 {
     100           0 :                     xMaster->setSlaveDispatchProvider( Reference< XDispatchProvider >::query( xSlave ) );
     101             :                 }
     102             : 
     103             :                 // if somebody has registered the same interceptor twice, then we will remove
     104             :                 // it once per call ...
     105           0 :                 break;
     106             :             }
     107             : 
     108           0 :             xChainWalk = xSlave;
     109           0 :         }
     110             :     }
     111             : 
     112             : 
     113           0 :     void ControlFeatureInterception::dispose()
     114             :     {
     115             :         // release all interceptors
     116           0 :         Reference< XDispatchProviderInterceptor > xInterceptor( m_xFirstDispatchInterceptor );
     117           0 :         m_xFirstDispatchInterceptor.clear();
     118           0 :         while ( xInterceptor.is() )
     119             :         {
     120             :             // tell the interceptor it has a new (means no) predecessor
     121           0 :             xInterceptor->setMasterDispatchProvider( NULL );
     122             : 
     123             :             // ask for it's successor
     124           0 :             Reference< XDispatchProvider > xSlave = xInterceptor->getSlaveDispatchProvider();
     125             :             // and give it the new (means no) successoert
     126           0 :             xInterceptor->setSlaveDispatchProvider( NULL );
     127             : 
     128             :             // start over with the next chain element
     129           0 :             xInterceptor = xInterceptor.query( xSlave );
     130           0 :         }
     131           0 :     }
     132             : 
     133           0 :     Reference< XDispatch > ControlFeatureInterception::queryDispatch( const URL& _rURL, const OUString& _rTargetFrameName, ::sal_Int32 _nSearchFlags ) SAL_THROW((RuntimeException))
     134             :     {
     135           0 :         Reference< XDispatch > xDispatcher;
     136           0 :         if ( m_xFirstDispatchInterceptor.is() )
     137           0 :             xDispatcher = m_xFirstDispatchInterceptor->queryDispatch( _rURL, _rTargetFrameName, _nSearchFlags );
     138           0 :         return xDispatcher;
     139             :     }
     140             : 
     141             : 
     142           0 :     Reference< XDispatch > ControlFeatureInterception::queryDispatch( const URL& _rURL ) SAL_THROW((RuntimeException))
     143             :     {
     144           0 :         return queryDispatch( _rURL, OUString(), 0 );
     145             :     }
     146             : 
     147             : 
     148           0 :     Reference< XDispatch > ControlFeatureInterception::queryDispatch( const sal_Char* _pAsciiURL ) SAL_THROW((RuntimeException))
     149             :     {
     150           0 :         return queryDispatch( m_pUrlTransformer->getStrictURLFromAscii( _pAsciiURL ) );
     151             :     }
     152             : 
     153             : 
     154             : } // namespace frm
     155             : 
     156             : 
     157             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */