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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
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_accessibility.hxx"

// includes --------------------------------------------------------------
#include <accessibility/standard/vclxaccessiblescrollbar.hxx>

#include <toolkit/awt/vclxwindows.hxx>
#include <accessibility/helper/accresmgr.hxx>
#include <accessibility/helper/accessiblestrings.hrc>

#include <unotools/accessiblestatesethelper.hxx>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <com/sun/star/awt/ScrollBarOrientation.hpp>
#include <cppuhelper/typeprovider.hxx>
#include <comphelper/sequence.hxx>
#include <vcl/scrbar.hxx>

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


// -----------------------------------------------------------------------------
// VCLXAccessibleScrollBar
// -----------------------------------------------------------------------------

VCLXAccessibleScrollBar::VCLXAccessibleScrollBar( VCLXWindow* pVCLWindow )
	:VCLXAccessibleComponent( pVCLWindow )
{
}

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

VCLXAccessibleScrollBar::~VCLXAccessibleScrollBar()
{
}

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

void VCLXAccessibleScrollBar::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )
{
    switch ( rVclWindowEvent.GetId() )
    {
		case VCLEVENT_SCROLLBAR_SCROLL:
        {
            NotifyAccessibleEvent( AccessibleEventId::VALUE_CHANGED, Any(), Any() );
        }
        break;
		default:
			VCLXAccessibleComponent::ProcessWindowEvent( rVclWindowEvent );
   }
}

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

void VCLXAccessibleScrollBar::FillAccessibleStateSet( utl::AccessibleStateSetHelper& rStateSet )
{
	VCLXAccessibleComponent::FillAccessibleStateSet( rStateSet );

	VCLXScrollBar* pVCLXScrollBar = static_cast< VCLXScrollBar* >( GetVCLXWindow() );
	if ( pVCLXScrollBar )
	{
        rStateSet.AddState( AccessibleStateType::FOCUSABLE );
		if ( pVCLXScrollBar->getOrientation() == ScrollBarOrientation::HORIZONTAL )
            rStateSet.AddState( AccessibleStateType::HORIZONTAL );
		else if ( pVCLXScrollBar->getOrientation() == ScrollBarOrientation::VERTICAL )
            rStateSet.AddState( AccessibleStateType::VERTICAL );
	}
}

// -----------------------------------------------------------------------------
// XInterface
// -----------------------------------------------------------------------------

IMPLEMENT_FORWARD_XINTERFACE2( VCLXAccessibleScrollBar, VCLXAccessibleComponent, VCLXAccessibleScrollBar_BASE )

// -----------------------------------------------------------------------------
// XTypeProvider
// -----------------------------------------------------------------------------

IMPLEMENT_FORWARD_XTYPEPROVIDER2( VCLXAccessibleScrollBar, VCLXAccessibleComponent, VCLXAccessibleScrollBar_BASE )

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

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

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

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

// -----------------------------------------------------------------------------
// XAccessibleAction
// -----------------------------------------------------------------------------

sal_Int32 VCLXAccessibleScrollBar::getAccessibleActionCount( ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return 4;
}

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

sal_Bool VCLXAccessibleScrollBar::doAccessibleAction ( sal_Int32 nIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	if ( nIndex < 0 || nIndex >= getAccessibleActionCount() )
        throw IndexOutOfBoundsException();

	sal_Bool bReturn = sal_False;
	ScrollBar* pScrollBar = static_cast< ScrollBar* >( GetWindow() );
	if ( pScrollBar )
	{
		ScrollType eScrollType;
		switch ( nIndex )
		{
			case 0:		eScrollType = SCROLL_LINEUP;	break;
			case 1:		eScrollType = SCROLL_LINEDOWN;	break;
			case 2:		eScrollType = SCROLL_PAGEUP;	break;
			case 3:		eScrollType = SCROLL_PAGEDOWN;	break;
			default:	eScrollType = SCROLL_DONTKNOW;	break;
		}
		if ( pScrollBar->DoScrollAction( eScrollType ) )
			bReturn = sal_True;
	}

	return bReturn;
}

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

::rtl::OUString VCLXAccessibleScrollBar::getAccessibleActionDescription ( sal_Int32 nIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	if ( nIndex < 0 || nIndex >= getAccessibleActionCount() )
        throw IndexOutOfBoundsException();

	::rtl::OUString sDescription;

	switch ( nIndex )
	{
		case 0:		sDescription = ::rtl::OUString( TK_RES_STRING( RID_STR_ACC_ACTION_DECLINE ) );		break;
		case 1:		sDescription = ::rtl::OUString( TK_RES_STRING( RID_STR_ACC_ACTION_INCLINE ) );		break;
		case 2:		sDescription = ::rtl::OUString( TK_RES_STRING( RID_STR_ACC_ACTION_DECBLOCK ) );		break;
		case 3:		sDescription = ::rtl::OUString( TK_RES_STRING( RID_STR_ACC_ACTION_INCBLOCK ) );		break;
		default:																						break;
	}

	return sDescription;
}

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

Reference< XAccessibleKeyBinding > VCLXAccessibleScrollBar::getAccessibleActionKeyBinding( sal_Int32 nIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	if ( nIndex < 0 || nIndex >= getAccessibleActionCount() )
        throw IndexOutOfBoundsException();

	return Reference< XAccessibleKeyBinding >();	
}

// -----------------------------------------------------------------------------
// XAccessibleValue
// -----------------------------------------------------------------------------

Any VCLXAccessibleScrollBar::getCurrentValue(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Any aValue;

	VCLXScrollBar* pVCLXScrollBar = static_cast< VCLXScrollBar* >( GetVCLXWindow() );
	if ( pVCLXScrollBar )
		aValue <<= (sal_Int32) pVCLXScrollBar->getValue();

	return aValue;
}

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

sal_Bool VCLXAccessibleScrollBar::setCurrentValue( const Any& aNumber ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	sal_Bool bReturn = sal_False;

	VCLXScrollBar* pVCLXScrollBar = static_cast< VCLXScrollBar* >( GetVCLXWindow() );
	if ( pVCLXScrollBar )
	{
		sal_Int32 nValue = 0, nValueMin = 0, nValueMax = 0;
		OSL_VERIFY( aNumber >>= nValue );
		OSL_VERIFY( getMinimumValue() >>= nValueMin );
		OSL_VERIFY( getMaximumValue() >>= nValueMax );

		if ( nValue < nValueMin )
			nValue = nValueMin;
		else if ( nValue > nValueMax )
			nValue = nValueMax;

		pVCLXScrollBar->setValue( nValue );
		bReturn = sal_True;
	}

	return bReturn;
}

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

Any VCLXAccessibleScrollBar::getMaximumValue(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Any aValue;

	VCLXScrollBar* pVCLXScrollBar = static_cast< VCLXScrollBar* >( GetVCLXWindow() );
	if ( pVCLXScrollBar )
		aValue <<= (sal_Int32) pVCLXScrollBar->getMaximum();
				
	return aValue;
}

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

Any VCLXAccessibleScrollBar::getMinimumValue(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Any aValue;
	aValue <<= (sal_Int32) 0;
	
	return aValue;
}

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