chart2/source/tools/ModifyListenerCallBack.cxx

   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 "ModifyListenerCallBack.hxx"
  22 #include "MutexContainer.hxx"
  23 #include <cppuhelper/compbase1.hxx>
  24
  25 using namespace ::com::sun::star;
  26 using ::com::sun::star::uno::Reference;
  27
  28 namespace chart {
  29
  30 typedef ::cppu::WeakComponentImplHelper1<
  31         ::com::sun::star::util::XModifyListener >
  32     ModifyListenerCallBack_Base;
  33
  34 class ModifyListenerCallBack_impl
  35     : public ::chart::MutexContainer
  36     , public ModifyListenerCallBack_Base
  37 {
  38 public:
  39     explicit ModifyListenerCallBack_impl( const Link& rCallBack );
  40     virtual ~ModifyListenerCallBack_impl();
  41
  42     void startListening( const Reference< util::XModifyBroadcaster >& xBroadcaster );
  43     void stopListening();
  44
  45     //XModifyListener
  46     virtual void SAL_CALL modified( const lang::EventObject& aEvent ) throw (uno::RuntimeException);
  47
  48     //XEventListener
  49     virtual void SAL_CALL disposing( const lang::EventObject& Source ) throw (uno::RuntimeException);
  50
  51     using ::cppu::WeakComponentImplHelperBase::disposing;
  52
  53 private:
  54     Link m_aLink;//will be callef on modify
  55     Reference< util::XModifyBroadcaster > m_xBroadcaster;//broadcaster to listen at
  56 };
  57
  58
  59 ModifyListenerCallBack_impl::ModifyListenerCallBack_impl( const Link& rCallBack )
  60                         : ModifyListenerCallBack_Base( m_aMutex )
  61                         , m_aLink( rCallBack )
  62                         , m_xBroadcaster(0)
  63 {
  64 }
  65
  66 ModifyListenerCallBack_impl::~ModifyListenerCallBack_impl()
  67 {
  68 }
  69
  70 //XModifyListener
  71 void SAL_CALL ModifyListenerCallBack_impl::modified( const lang::EventObject& /*aEvent*/ ) throw (uno::RuntimeException)
  72 {
  73     m_aLink.Call(0);
  74 }
  75
  76 //XEventListener
  77 void SAL_CALL ModifyListenerCallBack_impl::disposing( const lang::EventObject& /*Source*/ ) throw (uno::RuntimeException)
  78 {
  79     m_xBroadcaster.clear();
  80 }
  81
  82 void ModifyListenerCallBack_impl::startListening( const ::com::sun::star::uno::Reference< ::com::sun::star::util::XModifyBroadcaster >& xBroadcaster )
  83 {
  84     if( m_xBroadcaster == xBroadcaster )
  85         return;
  86
  87     stopListening();
  88     m_xBroadcaster = xBroadcaster;
  89     if( m_xBroadcaster.is() )
  90         m_xBroadcaster->addModifyListener( this );
  91 }
  92 void ModifyListenerCallBack_impl::stopListening()
  93 {
  94     if( m_xBroadcaster.is() )
  95     {
  96         m_xBroadcaster->removeModifyListener( this );
  97         m_xBroadcaster.clear();
  98     }
  99 }
 100
 101 //-------------------------------------------
 102
 103 ModifyListenerCallBack::ModifyListenerCallBack( const Link& rCallBack )
 104                         : pModifyListener_impl( new ModifyListenerCallBack_impl(rCallBack) )
 105                         , m_xModifyListener( pModifyListener_impl )
 106 {
 107 }
 108
 109 ModifyListenerCallBack::~ModifyListenerCallBack()
 110 {
 111     stopListening();
 112 }
 113
 114 void ModifyListenerCallBack::startListening( const ::com::sun::star::uno::Reference< ::com::sun::star::util::XModifyBroadcaster >& xBroadcaster )
 115 {
 116     pModifyListener_impl->startListening( xBroadcaster );
 117 }
 118 void ModifyListenerCallBack::stopListening()
 119 {
 120     pModifyListener_impl->stopListening();
 121 }
 122
 123 } // namespace chart
 124
 125 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */