/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   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 .

 */

#include <controls/table/AccessibleGridControl.hxx>

#include <controls/table/AccessibleGridControlTable.hxx>

#include <controls/table/AccessibleGridControlHeader.hxx>

#include <com/sun/star/accessibility/AccessibleEventId.hpp>

#include <com/sun/star/accessibility/AccessibleRole.hpp>

#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>

#include <utility>

#include <vcl/svapp.hxx>

#include <vcl/unohelp.hxx>

namespace accessibility

{

using namespace ::com::sun::star::uno;

using namespace ::com::sun::star;

using namespace ::com::sun::star::lang;

using namespace ::com::sun::star::accessibility;

using namespace ::vcl;

AccessibleGridControl::AccessibleGridControl(

            const css::uno::Reference< css::accessibility::XAccessible >& _rxParent,

            svt::table::TableControl& _rTable)

    : AccessibleGridControlBase(_rxParent, _rTable, AccessibleTableControlObjType::GRIDCONTROL)

{

}

void SAL_CALL AccessibleGridControl::disposing()

{

    SolarMutexGuard g;

    if ( m_xTable.is() )

    {

        m_xTable->dispose();

        m_xTable.clear();

    }

    if ( m_xRowHeaderBar.is() )

    {

        m_xRowHeaderBar->dispose();

        m_xRowHeaderBar.clear();

    }

    if ( m_xColumnHeaderBar.is() )

    {

        m_xColumnHeaderBar->dispose();

        m_xColumnHeaderBar.clear();

    }

    AccessibleGridControlBase::disposing();

}

sal_Int64 AccessibleGridControl::implGetAccessibleChildCount()

{

    return m_aTable.GetAccessibleControlCount();

}

// css::accessibility::XAccessibleContext ---------------------------------------------------------

sal_Int64 SAL_CALL AccessibleGridControl::getAccessibleChildCount()

{

    SolarMutexGuard aSolarGuard;

    ensureAlive();

    return implGetAccessibleChildCount();

}

css::uno::Reference< css::accessibility::XAccessible > SAL_CALL

AccessibleGridControl::getAccessibleChild( sal_Int64 nChildIndex )

{

    SolarMutexGuard aSolarGuard;

    if (nChildIndex<0 || nChildIndex>=implGetAccessibleChildCount())

        throw IndexOutOfBoundsException();

    css::uno::Reference< css::accessibility::XAccessible > xChild;

    if (isAlive())

    {

        if(nChildIndex == 0 && m_aTable.HasColHeader())

        {

            if(!m_xColumnHeaderBar.is())

            {

                m_xColumnHeaderBar = new AccessibleGridControlHeader(

                    this, m_aTable, AccessibleTableControlObjType::COLUMNHEADERBAR);

            }

            xChild = m_xColumnHeaderBar.get();

        }

        else if(m_aTable.HasRowHeader() && (nChildIndex == 1 || nChildIndex == 0))

        {

            if(!m_xRowHeaderBar.is())

            {

                m_xRowHeaderBar = new AccessibleGridControlHeader(

                    this, m_aTable, AccessibleTableControlObjType::ROWHEADERBAR);

            }

            xChild = m_xRowHeaderBar.get();

        }

        else

        {

            if(!m_xTable.is())

            {

                m_xTable = new AccessibleGridControlTable(this, m_aTable);

            }

            xChild = m_xTable.get();

        }

    }

    return xChild;

}

sal_Int16 SAL_CALL AccessibleGridControl::getAccessibleRole()

{

    SolarMutexGuard g;

    ensureAlive();

    return AccessibleRole::PANEL;

}

// css::accessibility::XAccessibleComponent -------------------------------------------------------

css::uno::Reference< css::accessibility::XAccessible > SAL_CALL

AccessibleGridControl::getAccessibleAtPoint( const awt::Point& rPoint )

{

    SolarMutexGuard aSolarGuard;

    ensureAlive();

    // try whether point is in one of the fixed children

    // (table, header bars, corner control)

    Point aPoint(vcl::unohelper::ConvertToVCLPoint(rPoint));

    const sal_Int64 nChildCount = implGetAccessibleChildCount();

    for (sal_Int64 nIndex = 0; nIndex < nChildCount; ++nIndex)

    {

        css::uno::Reference<css::accessibility::XAccessible> xCurrChild = getAccessibleChild(nIndex);

        css::uno::Reference<css::accessibility::XAccessibleComponent> xCurrChildComp(

            xCurrChild, uno::UNO_QUERY);

        if (xCurrChildComp.is()

            && vcl::unohelper::ConvertToVCLRect(xCurrChildComp->getBounds()).Contains(aPoint))

            return xCurrChild;

    }

    return nullptr;

}

void SAL_CALL AccessibleGridControl::grabFocus()

{

    SolarMutexGuard aSolarGuard;

    ensureAlive();

    m_aTable.GrabFocus();

}

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

OUString SAL_CALL AccessibleGridControl::getImplementationName()

{

    return u"com.sun.star.accessibility.AccessibleGridControl"_ustr;

}

// internal virtual methods ---------------------------------------------------

AbsoluteScreenPixelRectangle AccessibleGridControl::implGetBoundingBoxOnScreen()

{

    return m_aTable.GetWindowExtentsAbsolute();

}

// internal helper methods ----------------------------------------------------

void AccessibleGridControl::commitCellEvent(sal_Int16 _nEventId,const Any& _rNewValue,const Any& _rOldValue)

{

    sal_Int64 nChildCount = implGetAccessibleChildCount();

    assert(nChildCount != 0);

    for (sal_Int64 i = 0; i < nChildCount; i++)

    {

        css::uno::Reference<css::accessibility::XAccessible> xAccessible = getAccessibleChild(i);

        if (css::uno::Reference<css::accessibility::XAccessible>(m_xTable) == xAccessible)

        {

            Reference<XAccessible> xCell = m_xTable->getAccessibleCellAt(

                m_aTable.GetCurrentRow(), m_aTable.GetCurrentColumn());

            AccessibleGridControlTableCell* pCell

                = static_cast<AccessibleGridControlTableCell*>(xCell.get());

            pCell->commitEvent(_nEventId, _rNewValue, _rOldValue);

        }

    }

}

void AccessibleGridControl::commitTableEvent(sal_Int16 _nEventId,const Any& _rNewValue,const Any& _rOldValue)

{

    if ( !m_xTable.is() )

        return;

    if(_nEventId == AccessibleEventId::ACTIVE_DESCENDANT_CHANGED)

    {

        const sal_Int32 nCurrentRow = m_aTable.GetCurrentRow();

        const sal_Int32 nCurrentCol = m_aTable.GetCurrentColumn();

        css::uno::Reference< css::accessibility::XAccessible > xChild;

        if (nCurrentRow > -1 && nCurrentCol > -1)

            xChild = m_xTable->getAccessibleCellAt(nCurrentRow, nCurrentCol);

        m_xTable->commitEvent(_nEventId, Any(xChild),_rOldValue);

    }

    else

        m_xTable->commitEvent(_nEventId,_rNewValue,_rOldValue);

}

}   // namespace accessibility

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