/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"

#include "formdispatchinterceptor.hxx"

/** === begin UNO includes === **/
/** === end UNO includes === **/

#include <tools/debug.hxx>

//........................................................................
namespace svxform
{
//........................................................................

	/** === begin UNO using === **/
	using ::com::sun::star::uno::Reference;
	using ::com::sun::star::uno::XInterface;
	using ::com::sun::star::uno::UNO_QUERY;
	using ::com::sun::star::uno::UNO_QUERY_THROW;
	using ::com::sun::star::uno::UNO_SET_THROW;
	using ::com::sun::star::uno::Exception;
	using ::com::sun::star::uno::RuntimeException;
	using ::com::sun::star::uno::Any;
	using ::com::sun::star::uno::makeAny;
	using ::com::sun::star::uno::Sequence;
	using ::com::sun::star::uno::Type;
    using ::com::sun::star::frame::XDispatchProviderInterception;
    using ::com::sun::star::frame::XDispatchProviderInterceptor;
    using ::com::sun::star::lang::XComponent;
    using ::com::sun::star::util::URL;
    using ::com::sun::star::frame::XDispatch;
    using ::com::sun::star::frame::DispatchDescriptor;
    using ::com::sun::star::frame::XDispatchProvider;
    using ::com::sun::star::lang::EventObject;
	/** === end UNO using === **/

    //========================================================================
    //= DispatchInterceptionMultiplexer
    //========================================================================

    DBG_NAME(DispatchInterceptionMultiplexer)
    //------------------------------------------------------------------------
    DispatchInterceptionMultiplexer::DispatchInterceptionMultiplexer(
			    const Reference< XDispatchProviderInterception >& _rxToIntercept, DispatchInterceptor* _pMaster )
	    :DispatchInterceptionMultiplexer_BASE(_pMaster && _pMaster->getInterceptorMutex() ? *_pMaster->getInterceptorMutex() : m_aFallback)
        ,m_aFallback()
        ,m_pMutex( _pMaster && _pMaster->getInterceptorMutex() ? _pMaster->getInterceptorMutex() : &m_aFallback )
	    ,m_xIntercepted(_rxToIntercept)
	    ,m_bListening(sal_False)
	    ,m_pMaster(_pMaster)
    {
	    DBG_CTOR(DispatchInterceptionMultiplexer,NULL);

	    ::osl::MutexGuard aGuard( *m_pMutex );
	    ::comphelper::increment(m_refCount);
	    if (_rxToIntercept.is())
	    {
		    _rxToIntercept->registerDispatchProviderInterceptor((XDispatchProviderInterceptor*)this);
		    // this should make us the top-level dispatch-provider for the component, via a call to our
		    // setDispatchProvider we should have got an fallback for requests we (i.e. our master) cannot fullfill
		    Reference< XComponent> xInterceptedComponent(_rxToIntercept, UNO_QUERY);
		    if (xInterceptedComponent.is())
		    {
			    xInterceptedComponent->addEventListener(this);
			    m_bListening = sal_True;
		    }
	    }
	    ::comphelper::decrement(m_refCount);
    }

    //------------------------------------------------------------------------
    DispatchInterceptionMultiplexer::~DispatchInterceptionMultiplexer()
    {
	    if (!rBHelper.bDisposed)
		    dispose();

	    DBG_DTOR(DispatchInterceptionMultiplexer,NULL);
    }

    //------------------------------------------------------------------------------
    Reference< XDispatch > SAL_CALL DispatchInterceptionMultiplexer::queryDispatch( const URL& aURL, const ::rtl::OUString& aTargetFrameName, sal_Int32 nSearchFlags ) throw(RuntimeException)
    {
	    ::osl::MutexGuard aGuard( *m_pMutex );
	    Reference< XDispatch> xResult;
	    // ask our 'real' interceptor
	    if (m_pMaster)
		    xResult = m_pMaster->interceptedQueryDispatch( aURL, aTargetFrameName, nSearchFlags);

	    // ask our slave provider
	    if (!xResult.is() && m_xSlaveDispatcher.is())
		    xResult = m_xSlaveDispatcher->queryDispatch(aURL, aTargetFrameName, nSearchFlags);

	    return xResult;
    }

    //------------------------------------------------------------------------------
    Sequence< Reference< XDispatch > > SAL_CALL
    DispatchInterceptionMultiplexer::queryDispatches( const Sequence< DispatchDescriptor >& aDescripts ) throw(RuntimeException)
    {
	    ::osl::MutexGuard aGuard( *m_pMutex );
	    Sequence< Reference< XDispatch> > aReturn(aDescripts.getLength());
	    Reference< XDispatch>* pReturn = aReturn.getArray();
	    const DispatchDescriptor* pDescripts = aDescripts.getConstArray();
	    for (sal_Int16 i=0; i<aDescripts.getLength(); ++i, ++pReturn, ++pDescripts)
	    {
		    *pReturn = queryDispatch(pDescripts->FeatureURL, pDescripts->FrameName, pDescripts->SearchFlags);
	    }
	    return aReturn;
    }

    //------------------------------------------------------------------------------
    Reference< XDispatchProvider > SAL_CALL DispatchInterceptionMultiplexer::getSlaveDispatchProvider(	) throw(RuntimeException)
    {
	    ::osl::MutexGuard aGuard( *m_pMutex );
	    return m_xSlaveDispatcher;
    }

    //------------------------------------------------------------------------------
    void SAL_CALL DispatchInterceptionMultiplexer::setSlaveDispatchProvider(const Reference< XDispatchProvider>& xNewDispatchProvider) throw( RuntimeException )
    {
	    ::osl::MutexGuard aGuard( *m_pMutex );
	    m_xSlaveDispatcher = xNewDispatchProvider;
    }

    //------------------------------------------------------------------------------
    Reference< XDispatchProvider> SAL_CALL DispatchInterceptionMultiplexer::getMasterDispatchProvider(void) throw( RuntimeException )
    {
	    ::osl::MutexGuard aGuard( *m_pMutex );
	    return m_xMasterDispatcher;
    }

    //------------------------------------------------------------------------------
    void SAL_CALL DispatchInterceptionMultiplexer::setMasterDispatchProvider(const Reference< XDispatchProvider>& xNewSupplier) throw( RuntimeException )
    {
	    ::osl::MutexGuard aGuard( *m_pMutex );
	    m_xMasterDispatcher = xNewSupplier;
    }

    //------------------------------------------------------------------------------
    void SAL_CALL DispatchInterceptionMultiplexer::disposing(const EventObject& Source) throw( RuntimeException )
    {
	    if (m_bListening)
	    {
		    Reference< XDispatchProviderInterception > xIntercepted(m_xIntercepted.get(), UNO_QUERY);
		    if (Source.Source == xIntercepted)
			    ImplDetach();
	    }
    }

    //------------------------------------------------------------------------------
    void DispatchInterceptionMultiplexer::ImplDetach()
    {
	    ::osl::MutexGuard aGuard( *m_pMutex );
	    OSL_ENSURE(m_bListening, "DispatchInterceptionMultiplexer::ImplDetach: invalid call!");

	    // deregister ourself from the interception component
	    Reference< XDispatchProviderInterception > xIntercepted(m_xIntercepted.get(), UNO_QUERY);
	    if (xIntercepted.is())
		    xIntercepted->releaseDispatchProviderInterceptor(static_cast<XDispatchProviderInterceptor*>(this));

    //	m_xIntercepted = Reference< XDispatchProviderInterception >();
		    // Don't reset m_xIntercepted: It may be needed by our owner to check for which object we were
		    // responsible. As we hold the object with a weak reference only, this should be no problem.
		    // 88936 - 23.07.2001 - frank.schoenheit@sun.com
	    m_pMaster = NULL;
        m_pMutex = &m_aFallback;
	    m_bListening = sal_False;
    }

    //------------------------------------------------------------------------------
    void DispatchInterceptionMultiplexer::disposing()
    {
	    // remove ourself as event listener from the interception component
	    if (m_bListening)
	    {
		    Reference< XComponent> xInterceptedComponent(m_xIntercepted.get(), UNO_QUERY);
		    if (xInterceptedComponent.is())
			    xInterceptedComponent->removeEventListener(static_cast<XEventListener*>(this));

		    // detach from the interception component
		    ImplDetach();
	    }
    }

//........................................................................
} // namespace svxform
//........................................................................