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