xref: /aoo4110/main/accessibility/source/standard/vclxaccessiblestatusbar.cxx (revision b1cdbd2c)

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 *
 * 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/standard/vclxaccessiblestatusbar.hxx>
#include <accessibility/standard/vclxaccessiblestatusbaritem.hxx>
#include <toolkit/helper/convert.hxx>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <vcl/status.hxx>


using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::accessibility;
using namespace ::comphelper;


//	----------------------------------------------------
//	class VCLXAccessibleStatusBar
//	----------------------------------------------------

VCLXAccessibleStatusBar::VCLXAccessibleStatusBar( VCLXWindow* pVCLXWindow )
	:VCLXAccessibleComponent( pVCLXWindow )
{
	m_pStatusBar = static_cast< StatusBar* >( GetWindow() );

	if ( m_pStatusBar )
		m_aAccessibleChildren.assign( m_pStatusBar->GetItemCount(), Reference< XAccessible >() );
}

// -----------------------------------------------------------------------------

VCLXAccessibleStatusBar::~VCLXAccessibleStatusBar()
{
}

// -----------------------------------------------------------------------------

void VCLXAccessibleStatusBar::UpdateShowing( sal_Int32 i, sal_Bool bShowing )
{
	if ( i >= 0 && i < (sal_Int32)m_aAccessibleChildren.size() )
	{
		Reference< XAccessible > xChild( m_aAccessibleChildren[i] );
		if ( xChild.is() )
		{
			VCLXAccessibleStatusBarItem* pVCLXAccessibleStatusBarItem = static_cast< VCLXAccessibleStatusBarItem* >( xChild.get() );
			if ( pVCLXAccessibleStatusBarItem )
				pVCLXAccessibleStatusBarItem->SetShowing( bShowing );
		}
	}
}

// -----------------------------------------------------------------------------

void VCLXAccessibleStatusBar::UpdateItemName( sal_Int32 i )
{
	if ( i >= 0 && i < (sal_Int32)m_aAccessibleChildren.size() )
	{
		Reference< XAccessible > xChild( m_aAccessibleChildren[i] );
		if ( xChild.is() )
		{
			VCLXAccessibleStatusBarItem* pVCLXAccessibleStatusBarItem = static_cast< VCLXAccessibleStatusBarItem* >( xChild.get() );
			if ( pVCLXAccessibleStatusBarItem )
			{
				::rtl::OUString sItemName = pVCLXAccessibleStatusBarItem->GetItemName();
				pVCLXAccessibleStatusBarItem->SetItemName( sItemName );
			}
		}
	}
}

// -----------------------------------------------------------------------------

void VCLXAccessibleStatusBar::UpdateItemText( sal_Int32 i )
{
	if ( i >= 0 && i < (sal_Int32)m_aAccessibleChildren.size() )
	{
		Reference< XAccessible > xChild( m_aAccessibleChildren[i] );
		if ( xChild.is() )
		{
			VCLXAccessibleStatusBarItem* pVCLXAccessibleStatusBarItem = static_cast< VCLXAccessibleStatusBarItem* >( xChild.get() );
			if ( pVCLXAccessibleStatusBarItem )
			{
				::rtl::OUString sItemText = pVCLXAccessibleStatusBarItem->GetItemText();
				pVCLXAccessibleStatusBarItem->SetItemText( sItemText );
			}
		}
	}
}

// -----------------------------------------------------------------------------

void VCLXAccessibleStatusBar::InsertChild( sal_Int32 i )
{
	if ( i >= 0 && i <= (sal_Int32)m_aAccessibleChildren.size() )
	{
		// insert entry in child list
		m_aAccessibleChildren.insert( m_aAccessibleChildren.begin() + i, Reference< XAccessible >() );

		// send accessible child event
		Reference< XAccessible > xChild( getAccessibleChild( i ) );
		if ( xChild.is() )
		{
			Any aOldValue, aNewValue;
			aNewValue <<= xChild;
			NotifyAccessibleEvent( AccessibleEventId::CHILD, aOldValue, aNewValue );
		}
	}
}

// -----------------------------------------------------------------------------

void VCLXAccessibleStatusBar::RemoveChild( sal_Int32 i )
{
	if ( i >= 0 && i < (sal_Int32)m_aAccessibleChildren.size() )
	{
		// get the accessible of the removed page
		Reference< XAccessible > xChild( m_aAccessibleChildren[i] );

		// remove entry in child list
		m_aAccessibleChildren.erase( m_aAccessibleChildren.begin() + i );

		// send accessible child event
		if ( xChild.is() )
		{
			Any aOldValue, aNewValue;
			aOldValue <<= xChild;
			NotifyAccessibleEvent( AccessibleEventId::CHILD, aOldValue, aNewValue );

			Reference< XComponent > xComponent( xChild, UNO_QUERY );
			if ( xComponent.is() )
				xComponent->dispose();
		}
	}
}

// -----------------------------------------------------------------------------

void VCLXAccessibleStatusBar::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )
{
    switch ( rVclWindowEvent.GetId() )
    {
		case VCLEVENT_STATUSBAR_ITEMADDED:
        {
			if ( m_pStatusBar )
			{
                sal_uInt16 nItemId = (sal_uInt16)(sal_IntPtr) rVclWindowEvent.GetData();
				sal_uInt16 nItemPos = m_pStatusBar->GetItemPos( nItemId );
				InsertChild( nItemPos );
			}
        }
        break;
		case VCLEVENT_STATUSBAR_ITEMREMOVED:
        {
			if ( m_pStatusBar )
			{
                sal_uInt16 nItemId = (sal_uInt16)(sal_IntPtr) rVclWindowEvent.GetData();
				for ( sal_Int32 i = 0, nCount = getAccessibleChildCount(); i < nCount; ++i )
				{
					Reference< XAccessible > xChild( getAccessibleChild( i ) );
					if ( xChild.is() )
					{
						VCLXAccessibleStatusBarItem* pVCLXAccessibleStatusBarItem = static_cast< VCLXAccessibleStatusBarItem* >( xChild.get() );
						if ( pVCLXAccessibleStatusBarItem && pVCLXAccessibleStatusBarItem->GetItemId() == nItemId )
						{
							RemoveChild( i );
							break;
						}
					}
				}
			}
        }
        break;
		case VCLEVENT_STATUSBAR_ALLITEMSREMOVED:
        {
			for ( sal_Int32 i = m_aAccessibleChildren.size() - 1; i >= 0; --i )
				RemoveChild( i );
        }
        break;
		case VCLEVENT_STATUSBAR_SHOWITEM:
		case VCLEVENT_STATUSBAR_HIDEITEM:
		{
			if ( m_pStatusBar )
			{
                sal_uInt16 nItemId = (sal_uInt16)(sal_IntPtr) rVclWindowEvent.GetData();
				sal_uInt16 nItemPos = m_pStatusBar->GetItemPos( nItemId );
				UpdateShowing( nItemPos, rVclWindowEvent.GetId() == VCLEVENT_STATUSBAR_SHOWITEM );
			}
        }
        break;
		case VCLEVENT_STATUSBAR_SHOWALLITEMS:
		case VCLEVENT_STATUSBAR_HIDEALLITEMS:
		{
			for ( sal_uInt32 i = 0; i < m_aAccessibleChildren.size(); ++i )
				UpdateShowing( i, rVclWindowEvent.GetId() == VCLEVENT_STATUSBAR_SHOWALLITEMS );
        }
        break;
		case VCLEVENT_STATUSBAR_NAMECHANGED:
		{
			if ( m_pStatusBar )
			{
                sal_uInt16 nItemId = (sal_uInt16)(sal_IntPtr) rVclWindowEvent.GetData();
				sal_uInt16 nItemPos = m_pStatusBar->GetItemPos( nItemId );
				UpdateItemName( nItemPos );
			}
        }
        break;
		case VCLEVENT_STATUSBAR_DRAWITEM:
		{
			if ( m_pStatusBar )
			{
                sal_uInt16 nItemId = (sal_uInt16)(sal_IntPtr) rVclWindowEvent.GetData();
				sal_uInt16 nItemPos = m_pStatusBar->GetItemPos( nItemId );
				UpdateItemText( nItemPos );
			}
        }
        break;
		case VCLEVENT_OBJECT_DYING:
        {
			if ( m_pStatusBar )
			{
				m_pStatusBar = NULL;

				// dispose all children
				for ( sal_uInt32 i = 0; i < m_aAccessibleChildren.size(); ++i )
				{
					Reference< XComponent > xComponent( m_aAccessibleChildren[i], UNO_QUERY );
					if ( xComponent.is() )
						xComponent->dispose();
				}
				m_aAccessibleChildren.clear();
			}

			VCLXAccessibleComponent::ProcessWindowEvent( rVclWindowEvent );
        }
        break;
		default:
			VCLXAccessibleComponent::ProcessWindowEvent( rVclWindowEvent );
   }
}

// -----------------------------------------------------------------------------
// XComponent
// -----------------------------------------------------------------------------

void VCLXAccessibleStatusBar::disposing()
{
	VCLXAccessibleComponent::disposing();

	if ( m_pStatusBar )
	{
		m_pStatusBar = NULL;

		// dispose all children
		for ( sal_uInt32 i = 0; i < m_aAccessibleChildren.size(); ++i )
		{
			Reference< XComponent > xComponent( m_aAccessibleChildren[i], UNO_QUERY );
			if ( xComponent.is() )
				xComponent->dispose();
		}
		m_aAccessibleChildren.clear();
	}
}

// -----------------------------------------------------------------------------
// XServiceInfo
// -----------------------------------------------------------------------------

::rtl::OUString VCLXAccessibleStatusBar::getImplementationName() throw (RuntimeException)
{
	return ::rtl::OUString::createFromAscii( "com.sun.star.comp.toolkit.AccessibleStatusBar" );
}

// -----------------------------------------------------------------------------

Sequence< ::rtl::OUString > VCLXAccessibleStatusBar::getSupportedServiceNames() throw (RuntimeException)
{
	Sequence< ::rtl::OUString > aNames(1);
	aNames[0] = ::rtl::OUString::createFromAscii( "com.sun.star.awt.AccessibleStatusBar" );
	return aNames;
}

// -----------------------------------------------------------------------------
// XAccessibleContext
// -----------------------------------------------------------------------------

sal_Int32 VCLXAccessibleStatusBar::getAccessibleChildCount() throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return m_aAccessibleChildren.size();
}

// -----------------------------------------------------------------------------

Reference< XAccessible > VCLXAccessibleStatusBar::getAccessibleChild( sal_Int32 i ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	if ( i < 0 || i >= getAccessibleChildCount() )
		throw IndexOutOfBoundsException();

	Reference< XAccessible > xChild = m_aAccessibleChildren[i];
	if ( !xChild.is() )
	{
		if ( m_pStatusBar )
		{
			sal_uInt16 nItemId = m_pStatusBar->GetItemId( (sal_uInt16)i );

			xChild = new VCLXAccessibleStatusBarItem( m_pStatusBar, nItemId );

			// insert into status bar item list
			m_aAccessibleChildren[i] = xChild;
		}
	}

    return xChild;
}

// -----------------------------------------------------------------------------
// XAccessibleComponent
// -----------------------------------------------------------------------------

Reference< XAccessible > VCLXAccessibleStatusBar::getAccessibleAtPoint( const awt::Point& rPoint ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Reference< XAccessible > xChild;
	if ( m_pStatusBar )
	{
		sal_uInt16 nItemId = m_pStatusBar->GetItemId( VCLPoint( rPoint ) );
		sal_Int32 nItemPos = m_pStatusBar->GetItemPos( nItemId );
		if ( nItemPos >= 0 && nItemPos < (sal_Int32)m_aAccessibleChildren.size() )
			xChild = getAccessibleChild( nItemPos );
	}

	return xChild;
}

// -----------------------------------------------------------------------------