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