forms/source/inc/listenercontainers.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   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 #ifndef FORMS_SOURCE_INC_LISTENERCONTAINERS_HXX
  21 #define FORMS_SOURCE_INC_LISTENERCONTAINERS_HXX
  22
  23 #include <com/sun/star/form/XResetListener.hpp>
  24 #include <comphelper/listenernotification.hxx>
  25 #include <cppuhelper/weak.hxx>
  26
  27 //........................................................................
  28 namespace frm
  29 {
  30 //........................................................................
  31
  32     //=====================================================================
  33     //= EventListeners
  34     //=====================================================================
  35     template < class LISTENER >
  36     class EventListeners : public ::comphelper::OListenerContainerBase< LISTENER, ::com::sun::star::lang::EventObject >
  37     {
  38     public:
  39         typedef LISTENER                            ListenerClass;
  40         typedef ::com::sun::star::lang::EventObject EventClass;
  41         typedef ::comphelper::OListenerContainerBase< ListenerClass, EventClass >
  42                                                     EventListeners_Base;
  43
  44     private:
  45         ::cppu::OWeakObject&    m_rInstigator;
  46
  47     protected:
  48         ::cppu::OWeakObject&    getInstigator() { return m_rInstigator; }
  49
  50     protected:
  51         inline EventListeners( ::cppu::OWeakObject& _rInstigator, ::osl::Mutex& _rMutex )
  52             :EventListeners_Base( _rMutex )
  53             ,m_rInstigator( _rInstigator )
  54         {
  55         }
  56
  57         // still waiting to be overwritten
  58         virtual bool    implTypedNotify(
  59                             const ::com::sun::star::uno::Reference< ListenerClass >& _rxListener,
  60                             const EventClass& _rEvent
  61                         )   SAL_THROW( ( ::com::sun::star::uno::Exception ) ) = 0;
  62
  63     public:
  64         inline bool notify()
  65         {
  66             ::com::sun::star::lang::EventObject aEvent( m_rInstigator );
  67             return EventListeners_Base::notify( aEvent );
  68         }
  69
  70         inline void disposing()
  71         {
  72             ::com::sun::star::lang::EventObject aEvent( m_rInstigator );
  73             EventListeners_Base::disposing( aEvent );
  74         }
  75     protected:
  76         using EventListeners_Base::notify;
  77         using EventListeners_Base::disposing;
  78     };
  79
  80     //=====================================================================
  81     //= ResetListeners
  82     //=====================================================================
  83     typedef EventListeners  <   ::com::sun::star::form::XResetListener
  84                             >   ResetListeners_Base;
  85     class ResetListeners : public ResetListeners_Base
  86     {
  87     private:
  88         enum NotificationType
  89         {
  90             eApproval,
  91             eFinal
  92         };
  93         NotificationType        m_eCurrentNotificationType;
  94
  95     public:
  96         inline ResetListeners( ::cppu::OWeakObject& _rInstigator, ::osl::Mutex& _rMutex )
  97             :ResetListeners_Base( _rInstigator, _rMutex )
  98             ,m_eCurrentNotificationType( eApproval )
  99         {
 100         }
 101
 102         /** see whether all our listeners approve the reset
 103         */
 104         sal_Bool approveReset()
 105         {
 106             m_eCurrentNotificationType = eApproval;
 107             return notify();
 108         }
 109
 110         /** tell all our listeners that the reset happened
 111         */
 112         void resetted()
 113         {
 114             m_eCurrentNotificationType = eFinal;
 115             notify();
 116         }
 117
 118     protected:
 119         virtual bool    implTypedNotify(
 120                             const ::com::sun::star::uno::Reference< ::com::sun::star::form::XResetListener >& _rxListener,
 121                             const ::com::sun::star::lang::EventObject& _rEvent
 122                         )   SAL_THROW( ( ::com::sun::star::uno::Exception ) );
 123     };
 124
 125 //........................................................................
 126 } // namespace frm
 127 //........................................................................
 128
 129 #endif // FORMS_SOURCE_INC_LISTENERCONTAINERS_HXX
 130
 131 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */