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             : #include <com/sun/star/util/XModifyListener.hpp>
      21             : 
      22             : #include "listenercalls.hxx"
      23             : 
      24             : using namespace com::sun::star;
      25             : 
      26             : //------------------------------------------------------------------------
      27             : 
      28           0 : ScUnoListenerCalls::ScUnoListenerCalls()
      29             : {
      30           0 : }
      31             : 
      32           0 : ScUnoListenerCalls::~ScUnoListenerCalls()
      33             : {
      34             :     OSL_ENSURE( aEntries.empty(), "unhandled listener calls remaining" );
      35           0 : }
      36             : 
      37           0 : void ScUnoListenerCalls::Add( const uno::Reference<util::XModifyListener>& rListener,
      38             :                                 const lang::EventObject& rEvent )
      39             : {
      40           0 :     if ( rListener.is() )
      41           0 :         aEntries.push_back( ScUnoListenerEntry( rListener, rEvent ) );
      42           0 : }
      43             : 
      44           0 : void ScUnoListenerCalls::ExecuteAndClear()
      45             : {
      46             :     //  Execute all stored calls and remove them from the list.
      47             :     //  During each modified() call, Add may be called again.
      48             :     //  These new calls are executed here, too.
      49             : 
      50           0 :     if (!aEntries.empty())
      51             :     {
      52           0 :         std::list<ScUnoListenerEntry>::iterator aItr(aEntries.begin());
      53           0 :         std::list<ScUnoListenerEntry>::iterator aEndItr(aEntries.end());
      54           0 :         while ( aItr != aEndItr )
      55             :         {
      56           0 :             ScUnoListenerEntry aEntry = *aItr;
      57             :             try
      58             :             {
      59           0 :                 aEntry.xListener->modified( aEntry.aEvent );
      60             :             }
      61           0 :             catch ( const uno::RuntimeException& )
      62             :             {
      63             :                 // the listener is an external object and may throw a RuntimeException
      64             :                 // for reasons we don't know
      65             :             }
      66             : 
      67             :             //  New calls that are added during the modified() call are appended to the end
      68             :             //  of aEntries, so the loop will catch them, too (as long as erase happens
      69             :             //  after modified).
      70             : 
      71           0 :             aItr = aEntries.erase(aItr);
      72           0 :         }
      73             :     }
      74           0 : }
      75             : 
      76             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */