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     DBG_NAME(DispatchInterceptionMultiplexer)
  54     //------------------------------------------------------------------------
  55     DispatchInterceptionMultiplexer::DispatchInterceptionMultiplexer(
  56                 const Reference< XDispatchProviderInterception >& _rxToIntercept, DispatchInterceptor* _pMaster )
  57         :DispatchInterceptionMultiplexer_BASE(_pMaster && _pMaster->getInterceptorMutex() ? *_pMaster->getInterceptorMutex() : m_aFallback)
  58         ,m_aFallback()
  59         ,m_pMutex( _pMaster && _pMaster->getInterceptorMutex() ? _pMaster->getInterceptorMutex() : &m_aFallback )
  60         ,m_xIntercepted(_rxToIntercept)
  61         ,m_bListening(sal_False)
  62         ,m_pMaster(_pMaster)
  63     {
  64         DBG_CTOR(DispatchInterceptionMultiplexer,NULL);
  65
  66         ::osl::MutexGuard aGuard( *m_pMutex );
  67         ::comphelper::increment(m_refCount);
  68         if (_rxToIntercept.is())
  69         {
  70             _rxToIntercept->registerDispatchProviderInterceptor((XDispatchProviderInterceptor*)this);
  71             // this should make us the top-level dispatch-provider for the component, via a call to our
  72             // setDispatchProvider we should have got an fallback for requests we (i.e. our master) cannot fullfill
  73             Reference< XComponent> xInterceptedComponent(_rxToIntercept, UNO_QUERY);
  74             if (xInterceptedComponent.is())
  75             {
  76                 xInterceptedComponent->addEventListener(this);
  77                 m_bListening = sal_True;
  78             }
  79         }
  80         ::comphelper::decrement(m_refCount);
  81     }
  82
  83     //------------------------------------------------------------------------
  84     DispatchInterceptionMultiplexer::~DispatchInterceptionMultiplexer()
  85     {
  86         if (!rBHelper.bDisposed)
  87             dispose();
  88
  89         DBG_DTOR(DispatchInterceptionMultiplexer,NULL);
  90     }
  91
  92     //------------------------------------------------------------------------------
  93     Reference< XDispatch > SAL_CALL DispatchInterceptionMultiplexer::queryDispatch( const URL& aURL, const OUString& aTargetFrameName, sal_Int32 nSearchFlags ) throw(RuntimeException)
  94     {
  95         ::osl::MutexGuard aGuard( *m_pMutex );
  96         Reference< XDispatch> xResult;
  97         // ask our 'real' interceptor
  98         if (m_pMaster)
  99             xResult = m_pMaster->interceptedQueryDispatch( aURL, aTargetFrameName, nSearchFlags);
 100
 101         // ask our slave provider
 102         if (!xResult.is() && m_xSlaveDispatcher.is())
 103             xResult = m_xSlaveDispatcher->queryDispatch(aURL, aTargetFrameName, nSearchFlags);
 104
 105         return xResult;
 106     }
 107
 108     //------------------------------------------------------------------------------
 109     Sequence< Reference< XDispatch > > SAL_CALL
 110     DispatchInterceptionMultiplexer::queryDispatches( const Sequence< DispatchDescriptor >& aDescripts ) throw(RuntimeException)
 111     {
 112         ::osl::MutexGuard aGuard( *m_pMutex );
 113         Sequence< Reference< XDispatch> > aReturn(aDescripts.getLength());
 114         Reference< XDispatch>* pReturn = aReturn.getArray();
 115         const DispatchDescriptor* pDescripts = aDescripts.getConstArray();
 116         for (sal_Int16 i=0; i<aDescripts.getLength(); ++i, ++pReturn, ++pDescripts)
 117         {
 118             *pReturn = queryDispatch(pDescripts->FeatureURL, pDescripts->FrameName, pDescripts->SearchFlags);
 119         }
 120         return aReturn;
 121     }
 122
 123     //------------------------------------------------------------------------------
 124     Reference< XDispatchProvider > SAL_CALL DispatchInterceptionMultiplexer::getSlaveDispatchProvider(  ) throw(RuntimeException)
 125     {
 126         ::osl::MutexGuard aGuard( *m_pMutex );
 127         return m_xSlaveDispatcher;
 128     }
 129
 130     //------------------------------------------------------------------------------
 131     void SAL_CALL DispatchInterceptionMultiplexer::setSlaveDispatchProvider(const Reference< XDispatchProvider>& xNewDispatchProvider) throw( RuntimeException )
 132     {
 133         ::osl::MutexGuard aGuard( *m_pMutex );
 134         m_xSlaveDispatcher = xNewDispatchProvider;
 135     }
 136
 137     //------------------------------------------------------------------------------
 138     Reference< XDispatchProvider> SAL_CALL DispatchInterceptionMultiplexer::getMasterDispatchProvider(void) throw( RuntimeException )
 139     {
 140         ::osl::MutexGuard aGuard( *m_pMutex );
 141         return m_xMasterDispatcher;
 142     }
 143
 144     //------------------------------------------------------------------------------
 145     void SAL_CALL DispatchInterceptionMultiplexer::setMasterDispatchProvider(const Reference< XDispatchProvider>& xNewSupplier) throw( RuntimeException )
 146     {
 147         ::osl::MutexGuard aGuard( *m_pMutex );
 148         m_xMasterDispatcher = xNewSupplier;
 149     }
 150
 151     //------------------------------------------------------------------------------
 152     void SAL_CALL DispatchInterceptionMultiplexer::disposing(const EventObject& Source) throw( RuntimeException )
 153     {
 154         if (m_bListening)
 155         {
 156             Reference< XDispatchProviderInterception > xIntercepted(m_xIntercepted.get(), UNO_QUERY);
 157             if (Source.Source == xIntercepted)
 158                 ImplDetach();
 159         }
 160     }
 161
 162     //------------------------------------------------------------------------------
 163     void DispatchInterceptionMultiplexer::ImplDetach()
 164     {
 165         ::osl::MutexGuard aGuard( *m_pMutex );
 166         OSL_ENSURE(m_bListening, "DispatchInterceptionMultiplexer::ImplDetach: invalid call!");
 167
 168         // deregister ourself from the interception component
 169         Reference< XDispatchProviderInterception > xIntercepted(m_xIntercepted.get(), UNO_QUERY);
 170         if (xIntercepted.is())
 171             xIntercepted->releaseDispatchProviderInterceptor(static_cast<XDispatchProviderInterceptor*>(this));
 172
 173     //  m_xIntercepted = Reference< XDispatchProviderInterception >();
 174             // Don't reset m_xIntercepted: It may be needed by our owner to check for which object we were
 175             // responsible. As we hold the object with a weak reference only, this should be no problem.
 176             // 88936 - 23.07.2001 - frank.schoenheit@sun.com
 177         m_pMaster = NULL;
 178         m_pMutex = &m_aFallback;
 179         m_bListening = sal_False;
 180     }
 181
 182     //------------------------------------------------------------------------------
 183     void DispatchInterceptionMultiplexer::disposing()
 184     {
 185         // remove ourself as event listener from the interception component
 186         if (m_bListening)
 187         {
 188             Reference< XComponent> xInterceptedComponent(m_xIntercepted.get(), UNO_QUERY);
 189             if (xInterceptedComponent.is())
 190                 xInterceptedComponent->removeEventListener(static_cast<XEventListener*>(this));
 191
 192             // detach from the interception component
 193             ImplDetach();
 194         }
 195     }
 196
 197 //........................................................................
 198 } // namespace svxform
 199 //........................................................................
 200
 201 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */