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 #include <tools/debug.hxx>
  23
  24
  25 namespace svxform
  26 {
  27
  28
  29     using ::com::sun::star::uno::Reference;
  30     using ::com::sun::star::uno::XInterface;
  31     using ::com::sun::star::uno::UNO_QUERY;
  32     using ::com::sun::star::uno::UNO_QUERY_THROW;
  33     using ::com::sun::star::uno::UNO_SET_THROW;
  34     using ::com::sun::star::uno::Exception;
  35     using ::com::sun::star::uno::RuntimeException;
  36     using ::com::sun::star::uno::Any;
  37     using ::com::sun::star::uno::makeAny;
  38     using ::com::sun::star::uno::Sequence;
  39     using ::com::sun::star::uno::Type;
  40     using ::com::sun::star::frame::XDispatchProviderInterception;
  41     using ::com::sun::star::frame::XDispatchProviderInterceptor;
  42     using ::com::sun::star::lang::XComponent;
  43     using ::com::sun::star::util::URL;
  44     using ::com::sun::star::frame::XDispatch;
  45     using ::com::sun::star::frame::DispatchDescriptor;
  46     using ::com::sun::star::frame::XDispatchProvider;
  47     using ::com::sun::star::lang::EventObject;
  48
  49
  50     //= DispatchInterceptionMultiplexer
  51
  52
  53
  54     DispatchInterceptionMultiplexer::DispatchInterceptionMultiplexer(
  55                 const Reference< XDispatchProviderInterception >& _rxToIntercept, DispatchInterceptor* _pMaster )
  56         :DispatchInterceptionMultiplexer_BASE(_pMaster && _pMaster->getInterceptorMutex() ? *_pMaster->getInterceptorMutex() : m_aFallback)
  57         ,m_aFallback()
  58         ,m_pMutex( _pMaster && _pMaster->getInterceptorMutex() ? _pMaster->getInterceptorMutex() : &m_aFallback )
  59         ,m_xIntercepted(_rxToIntercept)
  60         ,m_bListening(false)
  61         ,m_pMaster(_pMaster)
  62     {
  63
  64         ::osl::MutexGuard aGuard( *m_pMutex );
  65         ::comphelper::increment(m_refCount);
  66         if (_rxToIntercept.is())
  67         {
  68             _rxToIntercept->registerDispatchProviderInterceptor((XDispatchProviderInterceptor*)this);
  69             // this should make us the top-level dispatch-provider for the component, via a call to our
  70             // setDispatchProvider we should have got an fallback for requests we (i.e. our master) cannot fulfill
  71             Reference< XComponent> xInterceptedComponent(_rxToIntercept, UNO_QUERY);
  72             if (xInterceptedComponent.is())
  73             {
  74                 xInterceptedComponent->addEventListener(this);
  75                 m_bListening = true;
  76             }
  77         }
  78         ::comphelper::decrement(m_refCount);
  79     }
  80
  81
  82     DispatchInterceptionMultiplexer::~DispatchInterceptionMultiplexer()
  83     {
  84         if (!rBHelper.bDisposed)
  85             dispose();
  86
  87     }
  88
  89
  90     Reference< XDispatch > SAL_CALL DispatchInterceptionMultiplexer::queryDispatch( const URL& aURL, const OUString& aTargetFrameName, sal_Int32 nSearchFlags ) throw(RuntimeException, std::exception)
  91     {
  92         ::osl::MutexGuard aGuard( *m_pMutex );
  93         Reference< XDispatch> xResult;
  94         // ask our 'real' interceptor
  95         if (m_pMaster)
  96             xResult = m_pMaster->interceptedQueryDispatch( aURL, aTargetFrameName, nSearchFlags);
  97
  98         // ask our slave provider
  99         if (!xResult.is() && m_xSlaveDispatcher.is())
 100             xResult = m_xSlaveDispatcher->queryDispatch(aURL, aTargetFrameName, nSearchFlags);
 101
 102         return xResult;
 103     }
 104
 105
 106     Sequence< Reference< XDispatch > > SAL_CALL
 107     DispatchInterceptionMultiplexer::queryDispatches( const Sequence< DispatchDescriptor >& aDescripts ) throw(RuntimeException, std::exception)
 108     {
 109         ::osl::MutexGuard aGuard( *m_pMutex );
 110         Sequence< Reference< XDispatch> > aReturn(aDescripts.getLength());
 111         Reference< XDispatch>* pReturn = aReturn.getArray();
 112         const DispatchDescriptor* pDescripts = aDescripts.getConstArray();
 113         for (sal_Int16 i=0; i<aDescripts.getLength(); ++i, ++pReturn, ++pDescripts)
 114         {
 115             *pReturn = queryDispatch(pDescripts->FeatureURL, pDescripts->FrameName, pDescripts->SearchFlags);
 116         }
 117         return aReturn;
 118     }
 119
 120
 121     Reference< XDispatchProvider > SAL_CALL DispatchInterceptionMultiplexer::getSlaveDispatchProvider(  ) throw(RuntimeException, std::exception)
 122     {
 123         ::osl::MutexGuard aGuard( *m_pMutex );
 124         return m_xSlaveDispatcher;
 125     }
 126
 127
 128     void SAL_CALL DispatchInterceptionMultiplexer::setSlaveDispatchProvider(const Reference< XDispatchProvider>& xNewDispatchProvider) throw( RuntimeException, std::exception )
 129     {
 130         ::osl::MutexGuard aGuard( *m_pMutex );
 131         m_xSlaveDispatcher = xNewDispatchProvider;
 132     }
 133
 134
 135     Reference< XDispatchProvider> SAL_CALL DispatchInterceptionMultiplexer::getMasterDispatchProvider(void) throw( RuntimeException, std::exception )
 136     {
 137         ::osl::MutexGuard aGuard( *m_pMutex );
 138         return m_xMasterDispatcher;
 139     }
 140
 141
 142     void SAL_CALL DispatchInterceptionMultiplexer::setMasterDispatchProvider(const Reference< XDispatchProvider>& xNewSupplier) throw( RuntimeException, std::exception )
 143     {
 144         ::osl::MutexGuard aGuard( *m_pMutex );
 145         m_xMasterDispatcher = xNewSupplier;
 146     }
 147
 148
 149     void SAL_CALL DispatchInterceptionMultiplexer::disposing(const EventObject& Source) throw( RuntimeException, std::exception )
 150     {
 151         if (m_bListening)
 152         {
 153             Reference< XDispatchProviderInterception > xIntercepted(m_xIntercepted.get(), UNO_QUERY);
 154             if (Source.Source == xIntercepted)
 155                 ImplDetach();
 156         }
 157     }
 158
 159
 160     void DispatchInterceptionMultiplexer::ImplDetach()
 161     {
 162         ::osl::MutexGuard aGuard( *m_pMutex );
 163         OSL_ENSURE(m_bListening, "DispatchInterceptionMultiplexer::ImplDetach: invalid call!");
 164
 165         // deregister ourself from the interception component
 166         Reference< XDispatchProviderInterception > xIntercepted(m_xIntercepted.get(), UNO_QUERY);
 167         if (xIntercepted.is())
 168             xIntercepted->releaseDispatchProviderInterceptor(static_cast<XDispatchProviderInterceptor*>(this));
 169
 170     //  m_xIntercepted = Reference< XDispatchProviderInterception >();
 171             // Don't reset m_xIntercepted: It may be needed by our owner to check for which object we were
 172             // responsible. As we hold the object with a weak reference only, this should be no problem.
 173             // 88936 - 23.07.2001 - frank.schoenheit@sun.com
 174         m_pMaster = NULL;
 175         m_pMutex = &m_aFallback;
 176         m_bListening = false;
 177     }
 178
 179
 180     void DispatchInterceptionMultiplexer::disposing()
 181     {
 182         // remove ourself as event listener from the interception component
 183         if (m_bListening)
 184         {
 185             Reference< XComponent> xInterceptedComponent(m_xIntercepted.get(), UNO_QUERY);
 186             if (xInterceptedComponent.is())
 187                 xInterceptedComponent->removeEventListener(static_cast<XEventListener*>(this));
 188
 189             // detach from the interception component
 190             ImplDetach();
 191         }
 192     }
 193
 194
 195 } // namespace svxform
 196
 197
 198 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */