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ooo340 / winaccessibility / source / service / msaaservice_impl.cxx

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/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright IBM Corporation 2010.
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#include <cppuhelper/implbase3.hxx>
#include <cppuhelper/factory.hxx>
#include <cppuhelper/implementationentry.hxx>

#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/accessibility/XMSAAService.hpp>

#include <com/sun/star/awt/XExtendedToolkit.hpp>
#include <vcl/svapp.hxx>

using namespace ::rtl; // for OUString
using namespace ::com::sun::star; // for odk interfaces
using namespace ::com::sun::star::uno; // for basic types
using namespace ::com::sun::star::accessibility;

using namespace ::com::sun::star::awt;

// MT: Shouldn't there be an include for this?
typedef sal_Int32 HWND;

#include "AccTopWindowListener.hxx"
#include "g_msacc.hxx"

extern void FreeTopWindowListener();
extern long GetMSComPtr(long hWnd, long lParam, long wParam);
extern void handleWindowOpened_impl( long pAcc);


namespace my_sc_impl
{

// extern Sequence< OUString > SAL_CALL  getSupportedServiceNames_MSAAServiceImpl();
// extern OUString SAL_CALL getImplementationName_MSAAServiceImpl();
// extern Reference< XInterface > SAL_CALL create_MSAAServiceImpl( Reference< XComponentContext > const & xContext ) SAL_THROW( () );

static Sequence< OUString > getSupportedServiceNames_MSAAServiceImpl()
{
    static Sequence < OUString > *pNames = 0;
    if( ! pNames )
    {
        //		MutexGuard guard( Mutex::getGlobalMutex() );
        if( !pNames )
        {
            static Sequence< OUString > seqNames(1);
            seqNames.getArray()[0] = OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.accessibility.MSAAService"));
            pNames = &seqNames;
        }
    }
    return *pNames;
}

static OUString getImplementationName_MSAAServiceImpl()
{
    static OUString *pImplName = 0;
    if( ! pImplName )
    {
        //		MutexGuard guard( Mutex::getGlobalMutex() );
        if( ! pImplName )
        {
            static OUString implName( RTL_CONSTASCII_USTRINGPARAM("com.sun.star.accessibility.my_sc_implementation.MSAAService") );
            pImplName = &implName;
        }
    }
    return *pImplName;
}

class MSAAServiceImpl : public ::cppu::WeakImplHelper3<
            XMSAAService, lang::XServiceInfo, lang::XInitialization >
{
    OUString m_arg;
public:
    // focus on three given interfaces,
    // no need to implement XInterface, XTypeProvider, XWeak
    MSAAServiceImpl ();
    virtual ~MSAAServiceImpl( void );
    // XInitialization will be called upon createInstanceWithArguments[AndContext]()
    virtual void SAL_CALL initialize( Sequence< Any > const & args )
    throw (Exception);
    // XMSAAService
    virtual sal_Int32 SAL_CALL getAccObjectPtr (long hWnd, long lParam, long wParam)
    throw (RuntimeException);
    virtual void SAL_CALL handleWindowOpened(sal_Int32)
    throw (RuntimeException);
    // XServiceInfo
    virtual OUString SAL_CALL getImplementationName()
    throw (RuntimeException);
    virtual sal_Bool SAL_CALL supportsService( OUString const & serviceName )
    throw (RuntimeException);
    virtual Sequence< OUString > SAL_CALL getSupportedServiceNames()
    throw (RuntimeException);
};

void MSAAServiceImpl::initialize( Sequence< Any > const & args ) throw (Exception)
{
    if (1 != args.getLength())
    {
        throw lang::IllegalArgumentException(
            OUString( RTL_CONSTASCII_USTRINGPARAM("give a string instanciating this component!") ),
            (::cppu::OWeakObject *)this, // resolve to XInterface reference
            0 ); // argument pos
    }
    if (! (args[ 0 ] >>= m_arg))
    {
        throw lang::IllegalArgumentException(
            OUString( RTL_CONSTASCII_USTRINGPARAM("no string given as argument!") ),
            (::cppu::OWeakObject *)this, // resolve to XInterface reference
            0 ); // argument pos
    }
}

sal_Int32 MSAAServiceImpl::getAccObjectPtr ( long hWnd, long lParam, long wParam) throw (RuntimeException)
{
    return GetMSComPtr(hWnd, lParam, wParam);
}

/**
   * Implemention of handleWindowOpened,the method will be invoked when a top window
   * opened and AT starts up.
   */
void MSAAServiceImpl::handleWindowOpened( sal_Int32 pAcc)
{
    handleWindowOpened_impl(pAcc);
}

OUString MSAAServiceImpl::getImplementationName() throw (RuntimeException)
{
    // unique implementation name
    return OUString( RTL_CONSTASCII_USTRINGPARAM("com.sun.star.accessibility.my_sc_impl.MSAAService") );
}

sal_Bool MSAAServiceImpl::supportsService( OUString const & serviceName ) throw (RuntimeException)
{
    // this object only supports one service, so the test is simple
    return serviceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM("com.sun.star.accessibility.MSAAService") );
}

Sequence< OUString > MSAAServiceImpl::getSupportedServiceNames() throw (RuntimeException)
{
    return getSupportedServiceNames_MSAAServiceImpl();
}

Reference< XInterface > SAL_CALL create_MSAAServiceImpl( Reference< XComponentContext > const & /*xContext*/ ) SAL_THROW( () )
{
    MSAAServiceImpl* xxx = new MSAAServiceImpl();
    //return static_cast< lang::XTypeProvider * >(  xxx );
    Reference< XMSAAService > p( xxx );
    return p;
}

MSAAServiceImpl::MSAAServiceImpl()
{
    Reference< XExtendedToolkit > xToolkit =
        Reference< XExtendedToolkit >(Application::GetVCLToolkit(), UNO_QUERY);

    if(xToolkit.is())
    {
        AccTopWindowListener *accListener;
        accListener = new AccTopWindowListener();
        g_pTop = accListener;
        Reference< XTopWindowListener> x(accListener);
        xToolkit->addTopWindowListener(x);
    }
}

MSAAServiceImpl::~MSAAServiceImpl()
{

    // As all folders and streams contain references to their parents,
    // we must remove these references so that they will be deleted when
    // the hash_map of the root folder is cleared, releasing all subfolders
    // and substreams which in turn release theirs, etc. When xRootFolder is
    // released when this destructor completes, the folder tree should be
    // deleted fully (and automagically).
    FreeTopWindowListener();


}

}

/* shared lib exports implemented without helpers in service_impl1.cxx */
namespace my_sc_impl
{
static struct ::cppu::ImplementationEntry s_component_entries [] =
    {
        {
            create_MSAAServiceImpl, getImplementationName_MSAAServiceImpl,
            getSupportedServiceNames_MSAAServiceImpl, ::cppu::createSingleComponentFactory,
            0, 0
        },
        {
            create_MSAAServiceImpl, getImplementationName_MSAAServiceImpl,
            getSupportedServiceNames_MSAAServiceImpl, ::cppu::createSingleComponentFactory,
            0, 0
        },
        { 0, 0, 0, 0, 0, 0 }
    };
}

extern "C"
{
    void SAL_CALL component_getImplementationEnvironment(
        sal_Char const ** ppEnvTypeName, uno_Environment ** /*ppEnv*/ )
    {
        *ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
    }
/*    
    sal_Bool SAL_CALL component_writeInfo(
        lang::XMultiServiceFactory * xMgr, registry::XRegistryKey * xRegistry )
    {
        return ::cppu::component_writeInfoHelper(
                   xMgr, xRegistry, ::my_sc_impl::s_component_entries );
    }
*/ 
    void * SAL_CALL component_getFactory(
        sal_Char const * implName, lang::XMultiServiceFactory * xMgr,
        registry::XRegistryKey * xRegistry )
    {
        return ::cppu::component_getFactoryHelper(
                   implName, xMgr, xRegistry, ::my_sc_impl::s_component_entries );
    }
}