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