unotools/source/misc/closeveto.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 #include <unotools/closeveto.hxx>
  21
  22 #include <com/sun/star/util/XCloseable.hpp>
  23
  24 #include <cppuhelper/implbase1.hxx>
  25 #include <rtl/ref.hxx>
  26 #include <tools/diagnose_ex.h>
  27
  28 //......................................................................................................................
  29 namespace utl
  30 {
  31 //......................................................................................................................
  32
  33     using ::com::sun::star::uno::Reference;
  34     using ::com::sun::star::uno::XInterface;
  35     using ::com::sun::star::uno::UNO_QUERY;
  36     using ::com::sun::star::uno::UNO_QUERY_THROW;
  37     using ::com::sun::star::uno::UNO_SET_THROW;
  38     using ::com::sun::star::uno::Exception;
  39     using ::com::sun::star::uno::RuntimeException;
  40     using ::com::sun::star::uno::Any;
  41     using ::com::sun::star::uno::makeAny;
  42     using ::com::sun::star::uno::Sequence;
  43     using ::com::sun::star::uno::Type;
  44     using ::com::sun::star::util::XCloseable;
  45     using ::com::sun::star::util::XCloseListener;
  46     using ::com::sun::star::util::CloseVetoException;
  47     using ::com::sun::star::lang::EventObject;
  48
  49     //==================================================================================================================
  50     //= CloseListener_Impl
  51     //==================================================================================================================
  52     typedef ::cppu::WeakImplHelper1 <   XCloseListener
  53                                     >   CloseListener_Base;
  54     class SAL_DLLPRIVATE CloseListener_Impl : public CloseListener_Base
  55     {
  56     public:
  57         CloseListener_Impl()
  58             :m_bHasOwnership( false )
  59         {
  60         }
  61
  62         // XCloseListener
  63         virtual void SAL_CALL queryClosing( const EventObject& Source, ::sal_Bool GetsOwnership ) throw (CloseVetoException, RuntimeException);
  64         virtual void SAL_CALL notifyClosing( const EventObject& Source ) throw (RuntimeException);
  65
  66         // XEventListener
  67         virtual void SAL_CALL disposing( const EventObject& Source) throw (RuntimeException);
  68
  69         bool hasOwnership() const { return m_bHasOwnership; }
  70
  71     protected:
  72         ~CloseListener_Impl()
  73         {
  74         }
  75
  76     private:
  77         bool    m_bHasOwnership;
  78     };
  79
  80     //------------------------------------------------------------------------------------------------------------------
  81     void SAL_CALL CloseListener_Impl::queryClosing( const EventObject& i_source, ::sal_Bool i_deliverOwnership ) throw (CloseVetoException, RuntimeException)
  82     {
  83         (void)i_source;
  84
  85         if ( !m_bHasOwnership )
  86             m_bHasOwnership = i_deliverOwnership;
  87
  88         throw CloseVetoException();
  89     }
  90
  91     //------------------------------------------------------------------------------------------------------------------
  92     void SAL_CALL CloseListener_Impl::notifyClosing( const EventObject& i_source ) throw (RuntimeException)
  93     {
  94         (void)i_source;
  95     }
  96
  97     //------------------------------------------------------------------------------------------------------------------
  98     void SAL_CALL CloseListener_Impl::disposing( const EventObject& i_source ) throw (RuntimeException)
  99     {
 100         (void)i_source;
 101     }
 102
 103     //==================================================================================================================
 104     //= CloseVeto_Data
 105     //==================================================================================================================
 106     struct SAL_DLLPRIVATE CloseVeto_Data
 107     {
 108         Reference< XCloseable >                 xCloseable;
 109         ::rtl::Reference< CloseListener_Impl >  pListener;
 110     };
 111
 112     //==================================================================================================================
 113     //= operations
 114     //==================================================================================================================
 115     namespace
 116     {
 117         //--------------------------------------------------------------------------------------------------------------
 118         void lcl_init( CloseVeto_Data& i_data, const Reference< XInterface >& i_closeable )
 119         {
 120             i_data.xCloseable.set( i_closeable, UNO_QUERY );
 121             ENSURE_OR_RETURN_VOID( i_data.xCloseable.is(), "CloseVeto: the component is not closeable!" );
 122
 123             i_data.pListener = new CloseListener_Impl;
 124             i_data.xCloseable->addCloseListener( i_data.pListener.get() );
 125         }
 126
 127         //--------------------------------------------------------------------------------------------------------------
 128         void lcl_deinit( CloseVeto_Data& i_data )
 129         {
 130             if ( !i_data.xCloseable.is() )
 131                 return;
 132
 133             i_data.xCloseable->removeCloseListener( i_data.pListener.get() );
 134             if ( i_data.pListener->hasOwnership() )
 135             {
 136                 try
 137                 {
 138                     i_data.xCloseable->close( sal_True );
 139                 }
 140                 catch( const CloseVetoException& ) { }
 141                 catch( const Exception& )
 142                 {
 143                     DBG_UNHANDLED_EXCEPTION();
 144                 }
 145             }
 146         }
 147     }
 148
 149     //==================================================================================================================
 150     //= CloseVeto
 151     //==================================================================================================================
 152     //------------------------------------------------------------------------------------------------------------------
 153     CloseVeto::CloseVeto( const Reference< XInterface >& i_closeable )
 154         :m_pData( new CloseVeto_Data )
 155     {
 156         lcl_init( *m_pData, i_closeable );
 157     }
 158
 159     //------------------------------------------------------------------------------------------------------------------
 160     CloseVeto::~CloseVeto()
 161     {
 162         lcl_deinit( *m_pData );
 163     }
 164
 165 //......................................................................................................................
 166 } // namespace utl
 167 //......................................................................................................................
 168
 169 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */