/**************************************************************
 * 
 * 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/standard/vclxaccessibletabpage.hxx>
#include <toolkit/helper/externallock.hxx>
#include <toolkit/helper/convert.hxx>
#include <accessibility/helper/characterattributeshelper.hxx>

#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboard.hpp>
#include <com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp>

#include <unotools/accessiblestatesethelper.hxx>
#include <unotools/accessiblerelationsethelper.hxx>
#include <vcl/svapp.hxx>
#include <vcl/unohelp2.hxx>
#include <vcl/tabctrl.hxx>
#include <vcl/tabpage.hxx>

#include <memory>


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


// -----------------------------------------------------------------------------
// class VCLXAccessibleTabPage
// -----------------------------------------------------------------------------

VCLXAccessibleTabPage::VCLXAccessibleTabPage( TabControl* pTabControl, sal_uInt16 nPageId )
	:AccessibleTextHelper_BASE( new VCLExternalSolarLock() )
	,m_pTabControl( pTabControl )
	,m_nPageId( nPageId )
{
	m_pExternalLock = static_cast< VCLExternalSolarLock* >( getExternalLock() );
	m_bFocused	= IsFocused();
	m_bSelected = IsSelected();
    m_sPageText = GetPageText();
}

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

VCLXAccessibleTabPage::~VCLXAccessibleTabPage()
{
	delete m_pExternalLock;
	m_pExternalLock = NULL;
}

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

bool VCLXAccessibleTabPage::IsFocused()
{
    bool bFocused = false;

    if ( m_pTabControl && m_pTabControl->HasFocus() && m_pTabControl->GetCurPageId() == m_nPageId )
        bFocused = true;

    return bFocused;
}

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

bool VCLXAccessibleTabPage::IsSelected()
{
    bool bSelected = false;

    if ( m_pTabControl && m_pTabControl->GetCurPageId() == m_nPageId )
        bSelected = true;

    return bSelected;
}

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

void VCLXAccessibleTabPage::SetFocused( bool bFocused )
{
	if ( m_bFocused != bFocused )
	{
		Any aOldValue, aNewValue;
		if ( m_bFocused )
			aOldValue <<= AccessibleStateType::FOCUSED;
		else
			aNewValue <<= AccessibleStateType::FOCUSED;
		m_bFocused = bFocused;
		NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
	}
}

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

void VCLXAccessibleTabPage::SetSelected( bool bSelected )
{
	if ( m_bSelected != bSelected )
	{
		Any aOldValue, aNewValue;
		if ( m_bSelected )
			aOldValue <<= AccessibleStateType::SELECTED;
		else
			aNewValue <<= AccessibleStateType::SELECTED;
		m_bSelected = bSelected;
	    NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
	}
}

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

void VCLXAccessibleTabPage::SetPageText( const ::rtl::OUString& sPageText )
{
    Any aOldValue, aNewValue;
    if ( OCommonAccessibleText::implInitTextChangedEvent( m_sPageText, sPageText, aOldValue, aNewValue ) )
    {
        Any aOldName, aNewName;
        aOldName <<= m_sPageText;
        aNewName <<= sPageText;
        m_sPageText = sPageText;
        NotifyAccessibleEvent( AccessibleEventId::NAME_CHANGED, aOldName, aNewName );
        NotifyAccessibleEvent( AccessibleEventId::TEXT_CHANGED, aOldValue, aNewValue );
    }
}

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

::rtl::OUString VCLXAccessibleTabPage::GetPageText()
{
	::rtl::OUString sText;
	if ( m_pTabControl )
		sText = OutputDevice::GetNonMnemonicString( m_pTabControl->GetPageText( m_nPageId ) );

	return sText;
}

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

void VCLXAccessibleTabPage::Update( bool bNew )
{
    if ( m_pTabControl )
    {
        TabPage* pTabPage = m_pTabControl->GetTabPage( m_nPageId );
        if ( pTabPage )
        {
	        Reference< XAccessible > xChild( pTabPage->GetAccessible( bNew ) );
	        if ( xChild.is() )
	        {
		        Any aOldValue, aNewValue;                
                if ( bNew )
			        aNewValue <<= xChild;
                else
                    aOldValue <<= xChild;
		        NotifyAccessibleEvent( AccessibleEventId::CHILD, aOldValue, aNewValue );
	        }
        }                       
    }
}

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

void VCLXAccessibleTabPage::FillAccessibleStateSet( utl::AccessibleStateSetHelper& rStateSet )
{
	rStateSet.AddState( AccessibleStateType::ENABLED );
    rStateSet.AddState( AccessibleStateType::SENSITIVE );

	rStateSet.AddState( AccessibleStateType::FOCUSABLE );

	if ( IsFocused() )
		rStateSet.AddState( AccessibleStateType::FOCUSED );

	rStateSet.AddState( AccessibleStateType::VISIBLE );

	rStateSet.AddState( AccessibleStateType::SHOWING );

    rStateSet.AddState( AccessibleStateType::SELECTABLE );

	if ( IsSelected() )
	    rStateSet.AddState( AccessibleStateType::SELECTED );
}

// -----------------------------------------------------------------------------
// OCommonAccessibleComponent 
// -----------------------------------------------------------------------------

awt::Rectangle VCLXAccessibleTabPage::implGetBounds() throw (RuntimeException)
{
	awt::Rectangle aBounds( 0, 0, 0, 0 );	

	if ( m_pTabControl )
        aBounds = AWTRectangle( m_pTabControl->GetTabBounds( m_nPageId ) );

	return aBounds;
}

// -----------------------------------------------------------------------------
// OCommonAccessibleText
// -----------------------------------------------------------------------------

::rtl::OUString VCLXAccessibleTabPage::implGetText()
{
    return GetPageText();
}

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

lang::Locale VCLXAccessibleTabPage::implGetLocale()
{
	return Application::GetSettings().GetLocale();
}

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

void VCLXAccessibleTabPage::implGetSelection( sal_Int32& nStartIndex, sal_Int32& nEndIndex )
{
	nStartIndex = 0;
	nEndIndex = 0;
}

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

IMPLEMENT_FORWARD_XINTERFACE2( VCLXAccessibleTabPage, AccessibleTextHelper_BASE, VCLXAccessibleTabPage_BASE )

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

IMPLEMENT_FORWARD_XTYPEPROVIDER2( VCLXAccessibleTabPage, AccessibleTextHelper_BASE, VCLXAccessibleTabPage_BASE )

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

void VCLXAccessibleTabPage::disposing()
{
	AccessibleTextHelper_BASE::disposing();

	m_pTabControl = NULL;
    m_sPageText = ::rtl::OUString();
}

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

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

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

sal_Bool VCLXAccessibleTabPage::supportsService( const ::rtl::OUString& rServiceName ) throw (RuntimeException)
{
	Sequence< ::rtl::OUString > aNames( getSupportedServiceNames() );
	const ::rtl::OUString* pNames = aNames.getConstArray();
	const ::rtl::OUString* pEnd = pNames + aNames.getLength();
	for ( ; pNames != pEnd && !pNames->equals( rServiceName ); ++pNames )
		;

	return pNames != pEnd;
}

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

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

// -----------------------------------------------------------------------------
// XAccessible
// -----------------------------------------------------------------------------

Reference< XAccessibleContext > VCLXAccessibleTabPage::getAccessibleContext(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return this;
}

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

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

	sal_Int32 nCount = 0;
	if ( m_pTabControl )
	{
		TabPage* pTabPage = m_pTabControl->GetTabPage( m_nPageId );
		if ( pTabPage && pTabPage->IsVisible() )
            nCount = 1;
	}

	return nCount;
}

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

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

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

	Reference< XAccessible > xChild;
	if ( m_pTabControl )
	{
		TabPage* pTabPage = m_pTabControl->GetTabPage( m_nPageId );
		if ( pTabPage && pTabPage->IsVisible() )
            xChild = pTabPage->GetAccessible();
	}

	return xChild;
}

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

Reference< XAccessible > VCLXAccessibleTabPage::getAccessibleParent(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Reference< XAccessible > xParent;
	if ( m_pTabControl )
		xParent = m_pTabControl->GetAccessible();

	return xParent;
}

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

sal_Int32 VCLXAccessibleTabPage::getAccessibleIndexInParent(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	sal_Int32 nIndexInParent = -1;
	if ( m_pTabControl )
		nIndexInParent = m_pTabControl->GetPagePos( m_nPageId );

	return nIndexInParent;
}

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

sal_Int16 VCLXAccessibleTabPage::getAccessibleRole(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return AccessibleRole::PAGE_TAB;
}

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

::rtl::OUString VCLXAccessibleTabPage::getAccessibleDescription(	) throw (RuntimeException)
{
    OExternalLockGuard aGuard( this );

    ::rtl::OUString sDescription;
    if ( m_pTabControl )
        sDescription = m_pTabControl->GetHelpText( m_nPageId );

    return sDescription;
}

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

::rtl::OUString VCLXAccessibleTabPage::getAccessibleName(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

    return GetPageText();
}

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

Reference< XAccessibleRelationSet > VCLXAccessibleTabPage::getAccessibleRelationSet(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

    utl::AccessibleRelationSetHelper* pRelationSetHelper = new utl::AccessibleRelationSetHelper;
	Reference< XAccessibleRelationSet > xSet = pRelationSetHelper;
    return xSet;
}

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

Reference< XAccessibleStateSet > VCLXAccessibleTabPage::getAccessibleStateSet(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	utl::AccessibleStateSetHelper* pStateSetHelper = new utl::AccessibleStateSetHelper;
	Reference< XAccessibleStateSet > xSet = pStateSetHelper;

	if ( !rBHelper.bDisposed && !rBHelper.bInDispose )
	{
		FillAccessibleStateSet( *pStateSetHelper );
	}
	else
	{
        pStateSetHelper->AddState( AccessibleStateType::DEFUNC );
	}

	return xSet;
}

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

Locale VCLXAccessibleTabPage::getLocale(  ) throw (IllegalAccessibleComponentStateException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return Application::GetSettings().GetLocale();
}

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

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

	Reference< XAccessible > xChild;
	for ( sal_uInt32 i = 0, nCount = getAccessibleChildCount(); i < nCount; ++i )
	{
		Reference< XAccessible > xAcc = getAccessibleChild( i );
		if ( xAcc.is() )
		{			
			Reference< XAccessibleComponent > xComp( xAcc->getAccessibleContext(), UNO_QUERY );				
			if ( xComp.is() )
			{
				Rectangle aRect = VCLRectangle( xComp->getBounds() );
				Point aPos = VCLPoint( rPoint );
				if ( aRect.IsInside( aPos ) )
				{
					xChild = xAcc;
					break;
				}
			}
		}
	}

	return xChild;
}

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

void VCLXAccessibleTabPage::grabFocus(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	if ( m_pTabControl )
    {
		m_pTabControl->SelectTabPage( m_nPageId );
        m_pTabControl->GrabFocus();
    }
}

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

sal_Int32 VCLXAccessibleTabPage::getForeground(	) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	sal_Int32 nColor = 0;
	Reference< XAccessible > xParent = getAccessibleParent();
	if ( xParent.is() )
	{
		Reference< XAccessibleComponent > xParentComp( xParent->getAccessibleContext(), UNO_QUERY );
		if ( xParentComp.is() )
			nColor = xParentComp->getForeground();	
	}

	return nColor;
}

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

sal_Int32 VCLXAccessibleTabPage::getBackground(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	sal_Int32 nColor = 0;
	Reference< XAccessible > xParent = getAccessibleParent();
	if ( xParent.is() )
	{
		Reference< XAccessibleComponent > xParentComp( xParent->getAccessibleContext(), UNO_QUERY );
		if ( xParentComp.is() )
			nColor = xParentComp->getBackground();	
	}

	return nColor;
}

// -----------------------------------------------------------------------------
// XAccessibleExtendedComponent
// -----------------------------------------------------------------------------

Reference< awt::XFont > VCLXAccessibleTabPage::getFont(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Reference< awt::XFont > xFont;
	Reference< XAccessible > xParent = getAccessibleParent();
	if ( xParent.is() )
	{
		Reference< XAccessibleExtendedComponent > xParentComp( xParent->getAccessibleContext(), UNO_QUERY );
		if ( xParentComp.is() )
			xFont = xParentComp->getFont();	
	}

	return xFont;
}

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

::rtl::OUString VCLXAccessibleTabPage::getTitledBorderText(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return ::rtl::OUString();
}

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

::rtl::OUString VCLXAccessibleTabPage::getToolTipText(  ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return ::rtl::OUString();
}

// -----------------------------------------------------------------------------
// XAccessibleText
// -----------------------------------------------------------------------------

sal_Int32 VCLXAccessibleTabPage::getCaretPosition() throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	return -1;
}

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

sal_Bool VCLXAccessibleTabPage::setCaretPosition( sal_Int32 nIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

    if ( !implIsValidRange( nIndex, nIndex, implGetText().getLength() ) )
        throw IndexOutOfBoundsException();

	return sal_False;
}

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

Sequence< PropertyValue > VCLXAccessibleTabPage::getCharacterAttributes( sal_Int32 nIndex, const Sequence< ::rtl::OUString >& aRequestedAttributes ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	Sequence< PropertyValue > aValues;
	::rtl::OUString sText( implGetText() );

    if ( !implIsValidIndex( nIndex, sText.getLength() ) )
        throw IndexOutOfBoundsException();

	if ( m_pTabControl )
	{
		Font aFont = m_pTabControl->GetFont();
		sal_Int32 nBackColor = getBackground();
		sal_Int32 nColor = getForeground();
        ::std::auto_ptr< CharacterAttributesHelper > pHelper( new CharacterAttributesHelper( aFont, nBackColor, nColor ) );
		aValues = pHelper->GetCharacterAttributes( aRequestedAttributes );
	}

    return aValues;
}

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

awt::Rectangle VCLXAccessibleTabPage::getCharacterBounds( sal_Int32 nIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

    if ( !implIsValidIndex( nIndex, implGetText().getLength() ) )
        throw IndexOutOfBoundsException();

	awt::Rectangle aBounds( 0, 0, 0, 0 );
	if ( m_pTabControl )
	{
		Rectangle aPageRect = m_pTabControl->GetTabBounds( m_nPageId );
		Rectangle aCharRect = m_pTabControl->GetCharacterBounds( m_nPageId, nIndex );
		aCharRect.Move( -aPageRect.Left(), -aPageRect.Top() );
		aBounds = AWTRectangle( aCharRect );
	}

	return aBounds;
}

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

sal_Int32 VCLXAccessibleTabPage::getIndexAtPoint( const awt::Point& aPoint ) throw (RuntimeException)
{
	OExternalLockGuard aGuard( this );

	sal_Int32 nIndex = -1;
	if ( m_pTabControl )
	{
		sal_uInt16 nPageId = 0;
		Rectangle aPageRect = m_pTabControl->GetTabBounds( m_nPageId );
        Point aPnt( VCLPoint( aPoint ) );
		aPnt += aPageRect.TopLeft();
		sal_Int32 nI = m_pTabControl->GetIndexForPoint( aPnt, nPageId );
		if ( nI != -1 && m_nPageId == nPageId )
			nIndex = nI;
	}

    return nIndex;
}

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

sal_Bool VCLXAccessibleTabPage::setSelection( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

    if ( !implIsValidRange( nStartIndex, nEndIndex, implGetText().getLength() ) )
        throw IndexOutOfBoundsException();

	return sal_False;
}

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

sal_Bool VCLXAccessibleTabPage::copyText( sal_Int32 nStartIndex, sal_Int32 nEndIndex ) throw (IndexOutOfBoundsException, RuntimeException)
{
	OExternalLockGuard aGuard( this );

	sal_Bool bReturn = sal_False;

	if ( m_pTabControl )
	{
		Reference< datatransfer::clipboard::XClipboard > xClipboard = m_pTabControl->GetClipboard();
		if ( xClipboard.is() )
		{
			::rtl::OUString sText( getTextRange( nStartIndex, nEndIndex ) );

			::vcl::unohelper::TextDataObject* pDataObj = new ::vcl::unohelper::TextDataObject( sText );
			const sal_uInt32 nRef = Application::ReleaseSolarMutex();
			xClipboard->setContents( pDataObj, NULL );

			Reference< datatransfer::clipboard::XFlushableClipboard > xFlushableClipboard( xClipboard, uno::UNO_QUERY );
			if( xFlushableClipboard.is() )
				xFlushableClipboard->flushClipboard();
			
			Application::AcquireSolarMutex( nRef );

			bReturn = sal_True;
		}
	}

    return bReturn;
}

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