/**************************************************************
 * 
 * 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.
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 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_accessibility.hxx"
#include "accessibility/extended/accessibletabbarbase.hxx"
#ifndef ACCESSIBILITY_EXT_ACCESSIBLETABBARPAGELIST
#include "accessibility/extended/accessibletabbarpagelist.hxx"
#endif
#include <toolkit/helper/externallock.hxx>
#include <svtools/tabbar.hxx>

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

AccessibleTabBarBase::AccessibleTabBarBase( TabBar* pTabBar ) :
    AccessibleExtendedComponentHelper_BASE( new VCLExternalSolarLock() ),
    m_pTabBar( 0 )
{
    m_pExternalLock = static_cast< VCLExternalSolarLock* >( getExternalLock() );
    SetTabBarPointer( pTabBar );
}

AccessibleTabBarBase::~AccessibleTabBarBase()
{
    ClearTabBarPointer();
    DELETEZ( m_pExternalLock );
}

IMPL_LINK( AccessibleTabBarBase, WindowEventListener, VclSimpleEvent*, pEvent )
{
    VclWindowEvent* pWinEvent = dynamic_cast< VclWindowEvent* >( pEvent );
    DBG_ASSERT( pWinEvent, "AccessibleTabBarBase::WindowEventListener - unknown window event" );
    if( pWinEvent )
    {
        Window* pEventWindow = pWinEvent->GetWindow();
        DBG_ASSERT( pEventWindow, "AccessibleTabBarBase::WindowEventListener: no window!" );

        if( ( pWinEvent->GetId() == VCLEVENT_TABBAR_PAGEREMOVED ) &&
            ( (sal_uInt16)(sal_IntPtr) pWinEvent->GetData() == TabBar::PAGE_NOT_FOUND ) &&
            ( dynamic_cast< AccessibleTabBarPageList *> (this) != NULL ) )
        {
            return 0;
        }

        if ( !pEventWindow->IsAccessibilityEventsSuppressed() || (pWinEvent->GetId() == VCLEVENT_OBJECT_DYING) )
            ProcessWindowEvent( *pWinEvent );
    }
    return 0;
}

void AccessibleTabBarBase::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )
{
    if( rVclWindowEvent.GetId() == VCLEVENT_OBJECT_DYING )
        ClearTabBarPointer();
}

// XComponent

void AccessibleTabBarBase::disposing()
{
    AccessibleExtendedComponentHelper_BASE::disposing();
    ClearTabBarPointer();
}

// private

void AccessibleTabBarBase::SetTabBarPointer( TabBar* pTabBar )
{
    DBG_ASSERT( !m_pTabBar, "AccessibleTabBarBase::SetTabBarPointer - multiple call" );
    m_pTabBar = pTabBar;
    if( m_pTabBar )
        m_pTabBar->AddEventListener( LINK( this, AccessibleTabBarBase, WindowEventListener ) );
}

void AccessibleTabBarBase::ClearTabBarPointer()
{
    if( m_pTabBar )
    {
        m_pTabBar->RemoveEventListener( LINK( this, AccessibleTabBarBase, WindowEventListener ) );
        m_pTabBar = 0;
    }
}

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