xref: /aoo42x/main/accessibility/source/extended/listboxaccessible.cxx (revision 0841af79)

/**************************************************************
 *
 * 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_accessibility.hxx"
#include <accessibility/extended/listboxaccessible.hxx>
#include <svtools/svtreebx.hxx>

//........................................................................
namespace accessibility
{
//........................................................................

	//====================================================================
	//= ListBoxAccessibleBase
	//====================================================================
	//--------------------------------------------------------------------
	ListBoxAccessibleBase::ListBoxAccessibleBase( SvTreeListBox& _rWindow )
		:m_pWindow( &_rWindow )
	{
		m_pWindow->AddEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
	}

	//--------------------------------------------------------------------
	ListBoxAccessibleBase::~ListBoxAccessibleBase( )
	{
		if ( m_pWindow )
		{
			// cannot call "dispose" here, as it is abstract, so the VTABLE of the derived class
			// is not intact anymore
			// so we call our "disposing" only
			disposing();
		}
	}

	//--------------------------------------------------------------------
	IMPL_LINK( ListBoxAccessibleBase, WindowEventListener, VclSimpleEvent*, pEvent )
	{
    	DBG_ASSERT( pEvent && pEvent->ISA( VclWindowEvent ), "ListBoxAccessibleBase::WindowEventListener: unexpected WindowEvent!" );
    	if ( pEvent && pEvent->ISA( VclWindowEvent ) )
    	{
        	DBG_ASSERT( static_cast< VclWindowEvent* >( pEvent )->GetWindow() , "ListBoxAccessibleBase::WindowEventListener: no event window!" );
        	DBG_ASSERT( static_cast< VclWindowEvent* >( pEvent )->GetWindow() == m_pWindow, "ListBoxAccessibleBase::WindowEventListener: where did this come from?" );

        	ProcessWindowEvent( *static_cast< VclWindowEvent* >( pEvent ) );
    	}
    	return 0;
	}

	// -----------------------------------------------------------------------------
	void ListBoxAccessibleBase::disposing()
	{
		if ( m_pWindow )
			m_pWindow->RemoveEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
		m_pWindow = NULL;
	}

	// -----------------------------------------------------------------------------
	void ListBoxAccessibleBase::ProcessWindowEvent( const VclWindowEvent& _rVclWindowEvent )
	{
		if ( isAlive() )
		{
			switch ( _rVclWindowEvent.GetId() )
			{
				case  VCLEVENT_OBJECT_DYING :
				{
		            if ( m_pWindow )
					    m_pWindow->RemoveEventListener( LINK( this, ListBoxAccessibleBase, WindowEventListener ) );
		            m_pWindow = NULL;
					dispose();
					break;
				}
			}
		}
	}

//........................................................................
}	// namespace accessibility
//........................................................................