/**************************************************************
 *
 * 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_sfx2.hxx"
#include <sfx2/querystatus.hxx>
#include <svl/poolitem.hxx>
#include <svl/eitem.hxx>
#include <svl/stritem.hxx>
#include <svl/intitem.hxx>
#include <svl/itemset.hxx>
#include <svtools/itemdel.hxx>
#include <svl/visitem.hxx>
#include <cppuhelper/weak.hxx>
#include <comphelper/processfactory.hxx>
#include <vos/mutex.hxx>
#include <vcl/svapp.hxx>
#include <com/sun/star/util/XURLTransformer.hpp>
#include <com/sun/star/frame/status/ItemStatus.hpp>
#include <com/sun/star/frame/status/ItemState.hpp>
#include <com/sun/star/frame/status/Visibility.hpp>

using ::rtl::OUString;
using namespace ::cppu;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::frame;
using namespace ::com::sun::star::frame::status;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::util;

class SfxQueryStatus_Impl : public ::com::sun::star::frame::XStatusListener	,
					        public ::com::sun::star::lang::XTypeProvider	,
					        public ::cppu::OWeakObject
{
    public:
	    SFX_DECL_XINTERFACE_XTYPEPROVIDER

        SfxQueryStatus_Impl( const ::com::sun::star::uno::Reference< ::com::sun::star::frame::XDispatchProvider >& rDispatchProvider, sal_uInt16 nSlotId, const rtl::OUString& aCommand );
        virtual ~SfxQueryStatus_Impl();

        // Query method
        SfxItemState QueryState( SfxPoolItem*& pPoolItem );

        // XEventListener
	    virtual void SAL_CALL disposing(const ::com::sun::star::lang::EventObject& Source) throw( ::com::sun::star::uno::RuntimeException );

        // XStatusListener
	    virtual void SAL_CALL statusChanged(const ::com::sun::star::frame::FeatureStateEvent& Event) throw( ::com::sun::star::uno::RuntimeException );

    private:
        SfxQueryStatus_Impl( const SfxQueryStatus& );
        SfxQueryStatus_Impl();
        SfxQueryStatus_Impl& operator=( const SfxQueryStatus& );

        sal_Bool                                                                   m_bQueryInProgress;
        SfxItemState                                                               m_eState;
        SfxPoolItem*                                                               m_pItem;
        sal_uInt16                                                                     m_nSlotID;
        osl::Condition                                                             m_aCondition;
        ::com::sun::star::util::URL                                                m_aCommand;
        com::sun::star::uno::Reference< com::sun::star::frame::XDispatch >         m_xDispatch;
};

SFX_IMPL_XINTERFACE_2( SfxQueryStatus_Impl, OWeakObject, ::com::sun::star::frame::XStatusListener, ::com::sun::star::lang::XEventListener )
SFX_IMPL_XTYPEPROVIDER_2( SfxQueryStatus_Impl, ::com::sun::star::frame::XStatusListener, ::com::sun::star::lang::XEventListener )

SfxQueryStatus_Impl::SfxQueryStatus_Impl( const Reference< XDispatchProvider >& rDispatchProvider, sal_uInt16 nSlotId, const OUString& rCommand ) :
    cppu::OWeakObject(),
    m_bQueryInProgress( sal_False ),
    m_eState( SFX_ITEM_DISABLED ),
    m_pItem( 0 ),
    m_nSlotID( nSlotId )
{
    m_aCommand.Complete = rCommand;
    Reference < XURLTransformer > xTrans( ::comphelper::getProcessServiceFactory()->createInstance(
                                            rtl::OUString::createFromAscii("com.sun.star.util.URLTransformer" )), UNO_QUERY );
    xTrans->parseStrict( m_aCommand );
    if ( rDispatchProvider.is() )
        m_xDispatch = rDispatchProvider->queryDispatch( m_aCommand, rtl::OUString(), 0 );
    m_aCondition.reset();
}

SfxQueryStatus_Impl::~SfxQueryStatus_Impl()
{
}

void SAL_CALL SfxQueryStatus_Impl::disposing( const EventObject& )
throw( RuntimeException )
{
    ::vos::OGuard aGuard( Application::GetSolarMutex() );
    m_xDispatch.clear();
}

void SAL_CALL SfxQueryStatus_Impl::statusChanged( const FeatureStateEvent& rEvent)
throw( RuntimeException )
{
    ::vos::OGuard aGuard( Application::GetSolarMutex() );

    m_pItem  = NULL;
    m_eState = SFX_ITEM_DISABLED;

    if ( rEvent.IsEnabled )
	{
		m_eState = SFX_ITEM_AVAILABLE;
		::com::sun::star::uno::Type pType =	rEvent.State.getValueType();

		if ( pType == ::getBooleanCppuType() )
		{
			sal_Bool bTemp = false;
			rEvent.State >>= bTemp ;
			m_pItem = new SfxBoolItem( m_nSlotID, bTemp );
		}
		else if ( pType == ::getCppuType((const sal_uInt16*)0) )
		{
			sal_uInt16 nTemp = 0;
			rEvent.State >>= nTemp ;
			m_pItem = new SfxUInt16Item( m_nSlotID, nTemp );
		}
		else if ( pType == ::getCppuType((const sal_uInt32*)0) )
		{
			sal_uInt32 nTemp = 0;
			rEvent.State >>= nTemp ;
			m_pItem = new SfxUInt32Item( m_nSlotID, nTemp );
		}
		else if ( pType == ::getCppuType((const ::rtl::OUString*)0) )
		{
			::rtl::OUString sTemp ;
			rEvent.State >>= sTemp ;
			m_pItem = new SfxStringItem( m_nSlotID, sTemp );
		}
        else if ( pType == ::getCppuType((const ::com::sun::star::frame::status::ItemStatus*)0) )
        {
            ItemStatus aItemStatus;
            rEvent.State >>= aItemStatus;
            m_eState = aItemStatus.State;
            m_pItem = new SfxVoidItem( m_nSlotID );
        }
        else if ( pType == ::getCppuType((const ::com::sun::star::frame::status::Visibility*)0) )
        {
            Visibility aVisibilityStatus;
            rEvent.State >>= aVisibilityStatus;
            m_pItem = new SfxVisibilityItem( m_nSlotID, aVisibilityStatus.bVisible );
        }
		else
        {
            m_eState = SFX_ITEM_UNKNOWN;
			m_pItem  = new SfxVoidItem( m_nSlotID );
        }
	}

	if ( m_pItem )
        DeleteItemOnIdle( m_pItem );

    try
    {
        m_aCondition.set();
        m_xDispatch->removeStatusListener( Reference< XStatusListener >( static_cast< cppu::OWeakObject* >( this ), UNO_QUERY ),
                                           m_aCommand );
    }
    catch ( Exception& )
    {
    }
}

// Query method
SfxItemState SfxQueryStatus_Impl::QueryState( SfxPoolItem*& rpPoolItem )
{
    ::vos::OGuard aGuard( Application::GetSolarMutex() );
    if ( !m_bQueryInProgress )
    {
        m_pItem  = NULL;
        m_eState = SFX_ITEM_DISABLED;

        if ( m_xDispatch.is() )
        {
            try
            {
                m_aCondition.reset();
                m_bQueryInProgress = sal_True;
                m_xDispatch->addStatusListener( Reference< XStatusListener >( static_cast< cppu::OWeakObject* >( this ), UNO_QUERY ),
                                                m_aCommand );
            }
            catch ( Exception& )
            {
                m_aCondition.set();
            }
        }
        else
            m_aCondition.set();
    }

    m_aCondition.wait();

    m_bQueryInProgress = sal_False;
    rpPoolItem = m_pItem;
    return m_eState;
}

//*************************************************************************

SfxQueryStatus::SfxQueryStatus( const Reference< XDispatchProvider >& rDispatchProvider, sal_uInt16 nSlotId, const OUString& rCommand )
{
    m_pSfxQueryStatusImpl = new SfxQueryStatus_Impl( rDispatchProvider, nSlotId, rCommand );
    m_xStatusListener     = Reference< XStatusListener >(
                                static_cast< cppu::OWeakObject* >( m_pSfxQueryStatusImpl ),
                                UNO_QUERY );
}

SfxQueryStatus::~SfxQueryStatus()
{
}

SfxItemState SfxQueryStatus::QueryState( SfxPoolItem*& rpPoolItem )
{
    ::vos::OGuard aGuard( Application::GetSolarMutex() );
    return m_pSfxQueryStatusImpl->QueryState( rpPoolItem );
}