/* -*- 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 "accessibletabbar.hxx"

#include "accessibletabbarpagelist.hxx"

#include <svtools/tabbar.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/awt/XDevice.hpp>

#include <com/sun/star/awt/XVclWindowPeer.hpp>

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

#include <comphelper/accessiblecontexthelper.hxx>

#include <cppuhelper/supportsservice.hxx>

#include <unotools/accessiblerelationsethelper.hxx>

#include <i18nlangtag/languagetag.hxx>

#include <o3tl/safeint.hxx>

#include <vcl/svapp.hxx>

#include <vcl/settings.hxx>

#include <vcl/unohelp.hxx>

#include <vcl/vclevent.hxx>

namespace accessibility

{

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;

AccessibleTabBar::AccessibleTabBar(TabBar* pTabBar)

    : AccessibleTabBarBase(pTabBar)

{

    if ( m_pTabBar )

        m_aAccessibleChildren.assign(m_pTabBar->GetAccessibleChildWindowCount() + 1, {});

}

void AccessibleTabBar::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )

{

    Any aOldValue, aNewValue;

    switch ( rVclWindowEvent.GetId() )

    {

        case VclEventId::WindowEnabled:

        {

            aNewValue <<= AccessibleStateType::SENSITIVE;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

            aNewValue <<= AccessibleStateType::ENABLED;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

        }

        break;

        case VclEventId::WindowDisabled:

        {

            aOldValue <<= AccessibleStateType::ENABLED;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

            aOldValue <<= AccessibleStateType::SENSITIVE;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

        }

        break;

        case VclEventId::WindowGetFocus:

        {

            aNewValue <<= AccessibleStateType::FOCUSED;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

        }

        break;

        case VclEventId::WindowLoseFocus:

        {

            aOldValue <<= AccessibleStateType::FOCUSED;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

        }

        break;

        case VclEventId::WindowShow:

        {

            aNewValue <<= AccessibleStateType::SHOWING;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

        }

        break;

        case VclEventId::WindowHide:

        {

            aOldValue <<= AccessibleStateType::SHOWING;

            NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

        }

        break;

        default:

        {

            AccessibleTabBarBase::ProcessWindowEvent( rVclWindowEvent );

        }

        break;

    }

}

void AccessibleTabBar::FillAccessibleStateSet( sal_Int64& rStateSet )

{

    if ( !m_pTabBar )

        return;

    if ( m_pTabBar->IsEnabled() )

    {

        rStateSet |= AccessibleStateType::ENABLED;

        rStateSet |= AccessibleStateType::SENSITIVE;

    }

    rStateSet |= AccessibleStateType::FOCUSABLE;

    if ( m_pTabBar->HasFocus() )

        rStateSet |= AccessibleStateType::FOCUSED;

    rStateSet |= AccessibleStateType::VISIBLE;

    if ( m_pTabBar->IsVisible() )

        rStateSet |= AccessibleStateType::SHOWING;

    if ( m_pTabBar->GetStyle() & WB_SIZEABLE )

        rStateSet |= AccessibleStateType::RESIZABLE;

}

// OAccessible

awt::Rectangle AccessibleTabBar::implGetBounds()

{

    awt::Rectangle aBounds;

    if ( m_pTabBar )

        aBounds = vcl::unohelper::ConvertToAWTRect(

            tools::Rectangle(m_pTabBar->GetPosPixel(), m_pTabBar->GetSizePixel()));

    return aBounds;

}

// XComponent

void AccessibleTabBar::disposing()

{

    AccessibleTabBarBase::disposing();

    // dispose all children

    for (const rtl::Reference<comphelper::OAccessible>& pChild : m_aAccessibleChildren)

    {

        if (pChild.is())

            pChild->dispose();

    }

    m_aAccessibleChildren.clear();

}

// XAccessibleContext

sal_Int64 AccessibleTabBar::getAccessibleChildCount()

{

    OExternalLockGuard aGuard( this );

    return m_aAccessibleChildren.size();

}

Reference< XAccessible > AccessibleTabBar::getAccessibleChild( sal_Int64 i )

{

    OExternalLockGuard aGuard( this );

    if ( i < 0 || o3tl::make_unsigned(i) >= m_aAccessibleChildren.size() )

        throw IndexOutOfBoundsException();

    rtl::Reference<comphelper::OAccessible> pChild = m_aAccessibleChildren[i];

    if (!pChild.is())

    {

        if ( m_pTabBar )

        {

            sal_Int32 nCount = m_pTabBar->GetAccessibleChildWindowCount();

            if ( i < nCount )

            {

                vcl::Window* pChildWin

                    = m_pTabBar->GetAccessibleChildWindow(static_cast<sal_uInt16>(i));

                if (pChildWin)

                    pChild = pChildWin->GetAccessible();

            }

            else if ( i == nCount )

            {

                pChild = new AccessibleTabBarPageList(m_pTabBar, i);

            }

            // insert into child list

            m_aAccessibleChildren[i] = pChild;

        }

    }

    return pChild;

}

Reference< XAccessible > AccessibleTabBar::getAccessibleParent(  )

{

    OExternalLockGuard aGuard( this );

    Reference< XAccessible > xParent;

    if ( m_pTabBar )

        xParent = m_pTabBar->GetAccessibleParent();

    return xParent;

}

sal_Int64 AccessibleTabBar::getAccessibleIndexInParent(  )

{

    OExternalLockGuard aGuard( this );

    sal_Int64 nIndexInParent = -1;

    if ( m_pTabBar )

    {

        vcl::Window* pParent = m_pTabBar->GetAccessibleParentWindow();

        if ( pParent )

        {

            for ( sal_uInt16 i = 0, nCount = pParent->GetAccessibleChildWindowCount(); i < nCount; ++i )

            {

                vcl::Window* pChild = pParent->GetAccessibleChildWindow( i );

                if ( pChild == static_cast< vcl::Window* >( m_pTabBar ) )

                {

                    nIndexInParent = i;

                    break;

                }

            }

        }

    }

    return nIndexInParent;

}

sal_Int16 AccessibleTabBar::getAccessibleRole(  )

{

    OExternalLockGuard aGuard( this );

    return AccessibleRole::PANEL;

}

OUString AccessibleTabBar::getAccessibleDescription( )

{

    OExternalLockGuard aGuard( this );

    if (m_pTabBar)

        return m_pTabBar->GetAccessibleDescription();

    return OUString();

}

OUString AccessibleTabBar::getAccessibleName(  )

{

    OExternalLockGuard aGuard( this );

    if (m_pTabBar)

        return m_pTabBar->GetAccessibleName();

    return OUString();

}

Reference< XAccessibleRelationSet > AccessibleTabBar::getAccessibleRelationSet(  )

{

    OExternalLockGuard aGuard( this );

    return new utl::AccessibleRelationSetHelper;

}

sal_Int64 AccessibleTabBar::getAccessibleStateSet(  )

{

    OExternalLockGuard aGuard( this );

    sal_Int64 nStateSet = 0;

    if ( !rBHelper.bDisposed && !rBHelper.bInDispose )

    {

        FillAccessibleStateSet( nStateSet );

    }

    else

    {

        nStateSet |= AccessibleStateType::DEFUNC;

    }

    return nStateSet;

}

Locale AccessibleTabBar::getLocale(  )

{

    OExternalLockGuard aGuard( this );

    return Application::GetSettings().GetLanguageTag().getLocale();

}

// XAccessibleComponent

Reference< XAccessible > AccessibleTabBar::getAccessibleAtPoint( const awt::Point& rPoint )

{

    OExternalLockGuard aGuard( this );

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

    {

        Reference< XAccessible > xAcc = getAccessibleChild( i );

        if ( xAcc.is() )

        {

            Reference< XAccessibleComponent > xComp( xAcc->getAccessibleContext(), UNO_QUERY );

            if ( xComp.is() )

            {

                tools::Rectangle aRect = vcl::unohelper::ConvertToVCLRect(xComp->getBounds());

                Point aPos = vcl::unohelper::ConvertToVCLPoint(rPoint);

                if ( aRect.Contains( aPos ) )

                {

                    return xAcc;

                }

            }

        }

    }

    return nullptr;

}

void AccessibleTabBar::grabFocus(  )

{

    OExternalLockGuard aGuard( this );

    if ( m_pTabBar )

        m_pTabBar->GrabFocus();

}

sal_Int32 AccessibleTabBar::getForeground(  )

{

    OExternalLockGuard aGuard( this );

    Color nColor;

    if ( m_pTabBar )

    {

        if ( m_pTabBar->IsControlForeground() )

            nColor = m_pTabBar->GetControlForeground();

        else

        {

            vcl::Font aFont;

            if ( m_pTabBar->IsControlFont() )

                aFont = m_pTabBar->GetControlFont();

            else

                aFont = m_pTabBar->GetFont();

            nColor = aFont.GetColor();

        }

    }

    return sal_Int32(nColor);

}

sal_Int32 AccessibleTabBar::getBackground(  )

{

    OExternalLockGuard aGuard( this );

    Color nColor;

    if ( m_pTabBar )

    {

        if ( m_pTabBar->IsControlBackground() )

            nColor = m_pTabBar->GetControlBackground();

        else

            nColor = m_pTabBar->GetBackground().GetColor();

    }

    return sal_Int32(nColor);

}

// XAccessibleExtendedComponent

OUString AccessibleTabBar::getTitledBorderText(  )

{

    OExternalLockGuard aGuard( this );

    OUString sText;

    if ( m_pTabBar )

        sText = m_pTabBar->GetText();

    return sText;

}

OUString AccessibleTabBar::getToolTipText(  )

{

    OExternalLockGuard aGuard( this );

    OUString sText;

    if ( m_pTabBar )

        sText = m_pTabBar->GetQuickHelpText();

    return sText;

}

}   // namespace accessibility

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