vcl/source/app/vclevent.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 "vcl/vclevent.hxx"
  21 #include "vcl/window.hxx"
  22
  23 #include "svdata.hxx"
  24
  25 #include <com/sun/star/accessibility/XAccessible.hpp>
  26
  27 using ::com::sun::star::uno::Reference;
  28 using ::com::sun::star::accessibility::XAccessible;
  29
  30 TYPEINIT0(VclSimpleEvent);
  31 TYPEINIT1(VclWindowEvent, VclSimpleEvent);
  32 TYPEINIT1(VclMenuEvent, VclSimpleEvent);
  33
  34 VclAccessibleEvent::VclAccessibleEvent( sal_uLong n, const Reference<XAccessible>& rxAccessible ) :
  35     VclSimpleEvent(n),
  36     mxAccessible(rxAccessible)
  37 {
  38 }
  39
  40 VclAccessibleEvent::~VclAccessibleEvent()
  41 {
  42 }
  43
  44
  45 void VclEventListeners::Call( VclSimpleEvent* pEvent ) const
  46 {
  47     if ( m_aListeners.empty() )
  48         return;
  49
  50     // Copy the list, because this can be destroyed when calling a Link...
  51     std::list<Link<>> aCopy( m_aListeners );
  52     std::list<Link<>>::iterator aIter( aCopy.begin() );
  53     std::list<Link<>>::const_iterator aEnd( aCopy.end() );
  54     if( pEvent->IsA( VclWindowEvent::StaticType() ) )
  55     {
  56         VclWindowEvent* pWinEvent = static_cast<VclWindowEvent*>(pEvent);
  57         ImplDelData aDel( pWinEvent->GetWindow() );
  58         while ( aIter != aEnd && ! aDel.IsDead() )
  59         {
  60             Link<> &rLink = *aIter;
  61             // check this hasn't been removed in some re-enterancy scenario fdo#47368
  62             if( std::find(m_aListeners.begin(), m_aListeners.end(), rLink) != m_aListeners.end() )
  63                 rLink.Call( pEvent );
  64             ++aIter;
  65         }
  66     }
  67     else
  68     {
  69         while ( aIter != aEnd )
  70         {
  71             Link<> &rLink = *aIter;
  72             if( std::find(m_aListeners.begin(), m_aListeners.end(), rLink) != m_aListeners.end() )
  73                 rLink.Call( pEvent );
  74             ++aIter;
  75         }
  76     }
  77 }
  78
  79 bool VclEventListeners::Process( VclSimpleEvent* pEvent ) const
  80 {
  81     if ( m_aListeners.empty() )
  82         return false;
  83
  84     bool bProcessed = false;
  85     // Copy the list, because this can be destroyed when calling a Link...
  86     std::list<Link<>> aCopy( m_aListeners );
  87     std::list<Link<>>::iterator aIter( aCopy.begin() );
  88     std::list<Link<>>::const_iterator aEnd( aCopy.end() );
  89     while ( aIter != aEnd )
  90     {
  91         if( (*aIter).Call( pEvent ) != 0 )
  92         {
  93             bProcessed = true;
  94             break;
  95         }
  96         ++aIter;
  97     }
  98     return bProcessed;
  99 }
 100
 101 void VclEventListeners::addListener( const Link<>& rListener )
 102 {
 103     m_aListeners.push_back( rListener );
 104 }
 105
 106 void VclEventListeners::removeListener( const Link<>& rListener )
 107 {
 108     m_aListeners.remove( rListener );
 109 }
 110
 111 VclEventListeners2::VclEventListeners2()
 112 {
 113 }
 114
 115 VclEventListeners2::~VclEventListeners2()
 116 {
 117 }
 118
 119 void VclEventListeners2::addListener( const Link<>& i_rLink )
 120 {
 121     // ensure uniqueness
 122     for( std::list< Link<> >::const_iterator it = m_aListeners.begin(); it != m_aListeners.end(); ++it )
 123     {
 124         if( *it == i_rLink )
 125             return;
 126     }
 127     m_aListeners.push_back( i_rLink );
 128 }
 129
 130 void VclEventListeners2::removeListener( const Link<>& i_rLink )
 131 {
 132     size_t n = m_aIterators.size();
 133     for( size_t i = 0; i < n; i++ )
 134     {
 135         if( m_aIterators[i].m_aIt != m_aListeners.end() && *m_aIterators[i].m_aIt == i_rLink )
 136         {
 137             m_aIterators[i].m_bWasInvalidated = true;
 138             ++m_aIterators[i].m_aIt;
 139         }
 140     }
 141     m_aListeners.remove( i_rLink );
 142 }
 143
 144 void VclEventListeners2::callListeners( VclSimpleEvent* i_pEvent )
 145 {
 146     vcl::DeletionListener aDel( this );
 147
 148     m_aIterators.push_back(ListenerIt(m_aListeners.begin()));
 149     size_t nIndex = m_aIterators.size() - 1;
 150     while( ! aDel.isDeleted() && m_aIterators[ nIndex ].m_aIt != m_aListeners.end() )
 151     {
 152         m_aIterators[ nIndex ].m_aIt->Call( i_pEvent );
 153         if( m_aIterators[ nIndex ].m_bWasInvalidated )
 154             // check if the current element was removed and the iterator increased in the meantime
 155             m_aIterators[ nIndex ].m_bWasInvalidated = false;
 156         else
 157             ++m_aIterators[ nIndex ].m_aIt;
 158     }
 159     m_aIterators.pop_back();
 160 }
 161
 162
 163 VclWindowEvent::VclWindowEvent( vcl::Window* pWin, sal_uLong n, void* pDat ) : VclSimpleEvent(n)
 164 {
 165     pWindow = pWin; pData = pDat;
 166 }
 167
 168 VclWindowEvent::~VclWindowEvent() {}
 169
 170 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */