libreoffice/forms/source/xforms/propertysetbase.cxx

/*************************************************************************
 *
 *  $RCSfile: propertysetbase.cxx,v $
 *
 *  $Revision: 1.3 $
 *
 *  last change: $Author: vg $ $Date: 2005-03-23 11:38:13 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  This library 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 for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (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.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
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 *  Contributor(s): _______________________________________
 *
 *
 ************************************************************************/

#include "propertysetbase.hxx"

#include <cppuhelper/typeprovider.hxx>  // for getImplementationId()

#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/beans/XMultiPropertySet.hpp>
#include <com/sun/star/beans/XPropertyState.hpp>
#include <com/sun/star/uno/Reference.hxx>

#ifndef _TOOLS_DEBUG_HXX
#include <tools/debug.hxx>
#endif

#include <vector>

using com::sun::star::uno::Any;
using com::sun::star::uno::Type;
using com::sun::star::uno::Sequence;
using com::sun::star::uno::Reference;
using com::sun::star::uno::Exception;
using com::sun::star::uno::RuntimeException;
using com::sun::star::lang::IllegalArgumentException;
using com::sun::star::beans::Property;
using com::sun::star::beans::XPropertySetInfo;

oslInterlockedCount SAL_CALL PropertyAccessorBase::acquire()
{
    return ++m_refCount;
}

oslInterlockedCount SAL_CALL PropertyAccessorBase::release()
{
    if ( --m_refCount == 0 )
    {
        delete this;
        return 0;
    }
    return m_refCount;
}

PropertySetBase::PropertySetBase( )
    :m_pProperties( NULL )
{
}

PropertySetBase::~PropertySetBase( )
{
    DELETEZ( m_pProperties );
}

cppu::IPropertyArrayHelper& SAL_CALL PropertySetBase::getInfoHelper()
{
    if ( !m_pProperties )
    {
        DBG_ASSERT( !m_aProperties.empty(), "PropertySetBase::getInfoHelper: no registered properties!" );
        m_pProperties = new cppu::OPropertyArrayHelper( m_aProperties.begin(), m_aProperties.size(), sal_False );
    }
    return *m_pProperties;
}

Reference< XPropertySetInfo > SAL_CALL PropertySetBase::getPropertySetInfo(  ) throw(RuntimeException)
{
    return cppu::OPropertySetHelper::createPropertySetInfo( getInfoHelper() );
}

void PropertySetBase::registerProperty( const Property& rProperty,
    const ::rtl::Reference< PropertyAccessorBase >& rAccessor )
{
    DBG_ASSERT( rAccessor.get(), "PropertySetBase::registerProperty: invalid property accessor, this will crash!" );
    m_aAccessors.insert( PropertyAccessors::value_type( rProperty.Handle, rAccessor ) );

    DBG_ASSERT( ( rAccessor->isWriteable() == true )
                == ( ( rProperty.Attributes & com::sun::star::beans::PropertyAttribute::READONLY ) == 0 ),
        "PropertySetBase::registerProperty: inconsistence!" );

    m_aProperties.push_back( rProperty );
}

void PropertySetBase::notifyAndCachePropertyValue( sal_Int32 nHandle )
{
    ::osl::ClearableMutexGuard aGuard( GetMutex() );

    PropertyValueCache::iterator aPos = m_aCache.find( nHandle );
    if ( aPos == m_aCache.end() )
    {   // method has never before been invoked for this property
        try
        {
            // determine the type of this property
            ::cppu::IPropertyArrayHelper& rPropertyMetaData = getInfoHelper();
            ::rtl::OUString sPropName;
            OSL_VERIFY( rPropertyMetaData.fillPropertyMembersByHandle( &sPropName, NULL, nHandle ) );
            Property aProperty = rPropertyMetaData.getPropertyByName( sPropName );
            // default construct a value of this type
            Any aEmptyValue( NULL, aProperty.Type );
            // insert into the cache
            aPos = m_aCache.insert( PropertyValueCache::value_type( nHandle, aEmptyValue ) ).first;
        }
        catch( Exception& )
        {
            DBG_ERROR( "PropertySetBase::notifyAndCachePropertyValue: this is not expected to fail!" );
        }
    }
    Any aOldValue = aPos->second;
    // determine the current value
    Any aNewValue;
    getFastPropertyValue( aNewValue, nHandle );
    // remember the old value
    aPos->second = aNewValue;

    aGuard.clear();
    if ( aNewValue != aOldValue )
        firePropertyChange( nHandle, aNewValue, aOldValue );
}

void PropertySetBase::initializePropertyValueCache( sal_Int32 nHandle )
{
    Any aCurrentValue;
    getFastPropertyValue( aCurrentValue, nHandle );

#if OSL_DEBUG_LEVEL > 0
    ::std::pair< PropertyValueCache::iterator, bool > aInsertResult =
#endif
    m_aCache.insert( PropertyValueCache::value_type( nHandle, aCurrentValue ) );
    DBG_ASSERT( aInsertResult.second, "PropertySetBase::initializePropertyValueCache: already cached a value for this property!" );
}

PropertyAccessorBase& PropertySetBase::locatePropertyHandler( sal_Int32 nHandle ) const
{
    PropertyAccessors::const_iterator aPropertyPos = m_aAccessors.find( nHandle );
    DBG_ASSERT( aPropertyPos != m_aAccessors.end() && aPropertyPos->second.get(),
        "PropertySetBase::locatePropertyHandler: accessor map is corrupted!" );
        // neither should this be called for handles where there is no accessor, nor should a
        // NULL accssor be in the map
    return *aPropertyPos->second;
}

sal_Bool SAL_CALL PropertySetBase::convertFastPropertyValue( Any& rConvertedValue, Any& rOldValue, sal_Int32 nHandle,
    const Any& rValue )
    throw (IllegalArgumentException)
{
    PropertyAccessorBase& rAccessor = locatePropertyHandler( nHandle );
    if ( !rAccessor.approveValue( rValue ) )
        throw IllegalArgumentException( ::rtl::OUString(), *this, 0 );

    rAccessor.getValue( rOldValue );
    if ( rOldValue != rValue )
    {
        rConvertedValue = rValue;   // no conversion at all
        return sal_True;
    }
    return sal_False;
}

void SAL_CALL PropertySetBase::setFastPropertyValue_NoBroadcast( sal_Int32 nHandle, const Any& rValue )
    throw (Exception)
{
    PropertyAccessorBase& rAccessor = locatePropertyHandler( nHandle );
    rAccessor.setValue( rValue );
}

void SAL_CALL PropertySetBase::getFastPropertyValue( Any& rValue, sal_Int32 nHandle ) const
{
    PropertyAccessorBase& rAccessor = locatePropertyHandler( nHandle );
    rAccessor.getValue( rValue );
}