svx/source/form/formdispatchinterceptor.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 <formdispatchinterceptor.hxx>
  21
  22 namespace svxform
  23 {
  24     using ::com::sun::star::uno::Reference;
  25     using ::com::sun::star::uno::UNO_QUERY;
  26     using ::com::sun::star::uno::Sequence;
  27     using ::com::sun::star::frame::XDispatchProviderInterception;
  28     using ::com::sun::star::frame::XDispatchProviderInterceptor;
  29     using ::com::sun::star::lang::XComponent;
  30     using ::com::sun::star::util::URL;
  31     using ::com::sun::star::frame::XDispatch;
  32     using ::com::sun::star::frame::DispatchDescriptor;
  33     using ::com::sun::star::frame::XDispatchProvider;
  34     using ::com::sun::star::lang::EventObject;
  35
  36     DispatchInterceptionMultiplexer::DispatchInterceptionMultiplexer(
  37                 const Reference< XDispatchProviderInterception >& _rxToIntercept, DispatchInterceptor* _pMaster )
  38         :DispatchInterceptionMultiplexer_BASE(_pMaster && _pMaster->getInterceptorMutex() ? *_pMaster->getInterceptorMutex() : m_aFallback)
  39         ,m_aFallback()
  40         ,m_pMutex( _pMaster && _pMaster->getInterceptorMutex() ? _pMaster->getInterceptorMutex() : &m_aFallback )
  41         ,m_xIntercepted(_rxToIntercept)
  42         ,m_bListening(false)
  43         ,m_pMaster(_pMaster)
  44     {
  45
  46         ::osl::MutexGuard aGuard( *m_pMutex );
  47         osl_atomic_increment(&m_refCount);
  48         if (_rxToIntercept.is())
  49         {
  50             _rxToIntercept->registerDispatchProviderInterceptor(static_cast<XDispatchProviderInterceptor*>(this));
  51             // this should make us the top-level dispatch-provider for the component, via a call to our
  52             // setDispatchProvider we should have got a fallback for requests we (i.e. our master) cannot fulfill
  53             Reference< XComponent> xInterceptedComponent(_rxToIntercept, UNO_QUERY);
  54             if (xInterceptedComponent.is())
  55             {
  56                 xInterceptedComponent->addEventListener(this);
  57                 m_bListening = true;
  58             }
  59         }
  60         osl_atomic_decrement(&m_refCount);
  61     }
  62
  63
  64     DispatchInterceptionMultiplexer::~DispatchInterceptionMultiplexer()
  65     {
  66         if (!rBHelper.bDisposed)
  67             dispose();
  68
  69     }
  70
  71
  72     Reference< XDispatch > SAL_CALL DispatchInterceptionMultiplexer::queryDispatch( const URL& aURL, const OUString& aTargetFrameName, sal_Int32 nSearchFlags )
  73     {
  74         ::osl::MutexGuard aGuard( *m_pMutex );
  75         Reference< XDispatch> xResult;
  76         // ask our 'real' interceptor
  77         if (m_pMaster)
  78             xResult = m_pMaster->interceptedQueryDispatch( aURL, aTargetFrameName, nSearchFlags);
  79
  80         // ask our slave provider
  81         if (!xResult.is() && m_xSlaveDispatcher.is())
  82             xResult = m_xSlaveDispatcher->queryDispatch(aURL, aTargetFrameName, nSearchFlags);
  83
  84         return xResult;
  85     }
  86
  87
  88     Sequence< Reference< XDispatch > > SAL_CALL
  89     DispatchInterceptionMultiplexer::queryDispatches( const Sequence< DispatchDescriptor >& aDescripts )
  90     {
  91         ::osl::MutexGuard aGuard( *m_pMutex );
  92         Sequence< Reference< XDispatch> > aReturn(aDescripts.getLength());
  93         std::transform(aDescripts.begin(), aDescripts.end(), aReturn.begin(),
  94             [this](const DispatchDescriptor& rDescript) -> Reference< XDispatch> {
  95                 return queryDispatch(rDescript.FeatureURL, rDescript.FrameName, rDescript.SearchFlags); });
  96         return aReturn;
  97     }
  98
  99
 100     Reference< XDispatchProvider > SAL_CALL DispatchInterceptionMultiplexer::getSlaveDispatchProvider(  )
 101     {
 102         ::osl::MutexGuard aGuard( *m_pMutex );
 103         return m_xSlaveDispatcher;
 104     }
 105
 106
 107     void SAL_CALL DispatchInterceptionMultiplexer::setSlaveDispatchProvider(const Reference< XDispatchProvider>& xNewDispatchProvider)
 108     {
 109         ::osl::MutexGuard aGuard( *m_pMutex );
 110         m_xSlaveDispatcher = xNewDispatchProvider;
 111     }
 112
 113
 114     Reference< XDispatchProvider> SAL_CALL DispatchInterceptionMultiplexer::getMasterDispatchProvider()
 115     {
 116         ::osl::MutexGuard aGuard( *m_pMutex );
 117         return m_xMasterDispatcher;
 118     }
 119
 120
 121     void SAL_CALL DispatchInterceptionMultiplexer::setMasterDispatchProvider(const Reference< XDispatchProvider>& xNewSupplier)
 122     {
 123         ::osl::MutexGuard aGuard( *m_pMutex );
 124         m_xMasterDispatcher = xNewSupplier;
 125     }
 126
 127
 128     void SAL_CALL DispatchInterceptionMultiplexer::disposing(const EventObject& Source)
 129     {
 130         if (m_bListening)
 131         {
 132             Reference< XDispatchProviderInterception > xIntercepted(m_xIntercepted.get(), UNO_QUERY);
 133             if (Source.Source == xIntercepted)
 134                 ImplDetach();
 135         }
 136     }
 137
 138
 139     void DispatchInterceptionMultiplexer::ImplDetach()
 140     {
 141         ::osl::MutexGuard aGuard( *m_pMutex );
 142         OSL_ENSURE(m_bListening, "DispatchInterceptionMultiplexer::ImplDetach: invalid call!");
 143
 144         // deregister ourself from the interception component
 145         Reference< XDispatchProviderInterception > xIntercepted(m_xIntercepted.get(), UNO_QUERY);
 146         if (xIntercepted.is())
 147             xIntercepted->releaseDispatchProviderInterceptor(static_cast<XDispatchProviderInterceptor*>(this));
 148
 149     //  m_xIntercepted.clear();
 150             // Don't reset m_xIntercepted: It may be needed by our owner to check for which object we were
 151             // responsible. As we hold the object with a weak reference only, this should be no problem.
 152             // 88936 - 23.07.2001 - frank.schoenheit@sun.com
 153         m_pMaster = nullptr;
 154         m_pMutex = &m_aFallback;
 155         m_bListening = false;
 156     }
 157
 158
 159     void DispatchInterceptionMultiplexer::disposing()
 160     {
 161         // remove ourself as event listener from the interception component
 162         if (m_bListening)
 163         {
 164             Reference< XComponent> xInterceptedComponent(m_xIntercepted.get(), UNO_QUERY);
 165             if (xInterceptedComponent.is())
 166                 xInterceptedComponent->removeEventListener(static_cast<XEventListener*>(this));
 167
 168             // detach from the interception component
 169             ImplDetach();
 170         }
 171     }
 172
 173
 174 }
 175
 176
 177 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */