/* -*- 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 <utility>

#include <vcl/accessibletableprovider.hxx>

#include <cppuhelper/supportsservice.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/accessibility/IllegalAccessibleComponentStateException.hpp>

#include <unotools/accessiblerelationsethelper.hxx>

#include <vcl/accessibility/AccessibleBrowseBoxBase.hxx>

#include <vcl/unohelp.hxx>

#include <vcl/window.hxx>

#include <vcl/svapp.hxx>

using ::com::sun::star::uno::Reference;

using ::com::sun::star::uno::Sequence;

using ::com::sun::star::uno::Any;

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

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

using namespace ::comphelper;

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

// Ctor/Dtor/disposing

AccessibleBrowseBoxBase::AccessibleBrowseBoxBase(

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

    ::vcl::IAccessibleTableProvider& rBrowseBox,

    const css::uno::Reference<css::awt::XWindow>& xFocusWindow, AccessibleBrowseBoxObjType eObjType)

    : AccessibleBrowseBoxBase(xParent, rBrowseBox, xFocusWindow, eObjType,

                              rBrowseBox.GetAccessibleObjectName(eObjType),

                              rBrowseBox.GetAccessibleObjectDescription(eObjType))

{

}

AccessibleBrowseBoxBase::AccessibleBrowseBoxBase(

        css::uno::Reference< css::accessibility::XAccessible >  rxParent,

        ::vcl::IAccessibleTableProvider&                      rBrowseBox,

        css::uno::Reference< css::awt::XWindow >  _xFocusWindow,

        AccessibleBrowseBoxObjType      eObjType,

        OUString           rName,

        OUString           rDescription ) :

    ImplInheritanceHelper(),

    mxParent(std::move( rxParent )),

    mpBrowseBox( &rBrowseBox ),

    m_xFocusWindow(std::move(_xFocusWindow)),

    maName(std::move( rName )),

    maDescription(std::move( rDescription )),

    meObjType( eObjType )

{

    if ( m_xFocusWindow.is() )

        m_xFocusWindow->addFocusListener( this );

}

void SAL_CALL AccessibleBrowseBoxBase::disposing()

{

    ::osl::MutexGuard aGuard( getMutex() );

    if ( m_xFocusWindow.is() )

    {

        SolarMutexGuard aSolarGuard;

        m_xFocusWindow->removeFocusListener( this );

    }

    OAccessible::disposing();

    mxParent = nullptr;

    mpBrowseBox = nullptr;

}

css::awt::Rectangle AccessibleBrowseBoxBase::implGetBounds()

{

    return vcl::unohelper::ConvertToAWTRect(implGetBoundingBox());

}

// css::accessibility::XAccessibleContext

Reference< css::accessibility::XAccessible > SAL_CALL AccessibleBrowseBoxBase::getAccessibleParent()

{

    ::osl::MutexGuard aGuard( getMutex() );

    ensureIsAlive();

    return mxParent;

}

OUString SAL_CALL AccessibleBrowseBoxBase::getAccessibleDescription()

{

    ::osl::MutexGuard aGuard( getMutex() );

    ensureIsAlive();

    return maDescription;

}

OUString SAL_CALL AccessibleBrowseBoxBase::getAccessibleName()

{

    ::osl::MutexGuard aGuard( getMutex() );

    ensureIsAlive();

    return maName;

}

Reference< css::accessibility::XAccessibleRelationSet > SAL_CALL

AccessibleBrowseBoxBase::getAccessibleRelationSet()

{

    ::osl::MutexGuard aGuard( getMutex() );

    ensureIsAlive();

    // BrowseBox does not have relations.

    return new utl::AccessibleRelationSetHelper;

}

sal_Int64 SAL_CALL

AccessibleBrowseBoxBase::getAccessibleStateSet()

{

    SolarMethodGuard aGuard( getMutex() );

    // don't check whether alive -> StateSet may contain DEFUNC

    return implCreateStateSet();

}

lang::Locale SAL_CALL AccessibleBrowseBoxBase::getLocale()

{

    ::osl::MutexGuard aGuard( getMutex() );

    ensureIsAlive();

    if( mxParent.is() )

    {

        css::uno::Reference< css::accessibility::XAccessibleContext >

            xParentContext( mxParent->getAccessibleContext() );

        if( xParentContext.is() )

            return xParentContext->getLocale();

    }

    throw IllegalAccessibleComponentStateException();

}

// css::accessibility::XAccessibleComponent

void SAL_CALL AccessibleBrowseBoxBase::focusGained( const css::awt::FocusEvent& )

{

    css::uno::Any aFocused;

    css::uno::Any aEmpty;

    aFocused <<= FOCUSED;

    commitEvent(AccessibleEventId::STATE_CHANGED,aFocused,aEmpty);

}

void SAL_CALL AccessibleBrowseBoxBase::focusLost( const css::awt::FocusEvent& )

{

    css::uno::Any aFocused;

    css::uno::Any aEmpty;

    aFocused <<= FOCUSED;

    commitEvent(AccessibleEventId::STATE_CHANGED,aEmpty,aFocused);

}

// XServiceInfo

sal_Bool SAL_CALL AccessibleBrowseBoxBase::supportsService(

        const OUString& rServiceName )

{

    return cppu::supportsService(this, rServiceName);

}

Sequence< OUString > SAL_CALL AccessibleBrowseBoxBase::getSupportedServiceNames()

{

    return { u"com.sun.star.accessibility.AccessibleContext"_ustr };

}

// other public methods

void AccessibleBrowseBoxBase::setAccessibleName( const OUString& rName )

{

    ::osl::ClearableMutexGuard aGuard( getMutex() );

    Any aOld;

    aOld <<= maName;

    maName = rName;

    aGuard.clear();

    commitEvent(

        AccessibleEventId::NAME_CHANGED,

        uno::Any( maName ),

        aOld );

}

void AccessibleBrowseBoxBase::setAccessibleDescription( const OUString& rDescription )

{

    ::osl::ClearableMutexGuard aGuard( getMutex() );

    Any aOld;

    aOld <<= maDescription;

    maDescription = rDescription;

    aGuard.clear();

    commitEvent(

        AccessibleEventId::DESCRIPTION_CHANGED,

        uno::Any( maDescription ),

        aOld );

}

// internal virtual methods

bool AccessibleBrowseBoxBase::implIsShowing()

{

    bool bShowing = false;

    if( mxParent.is() )

    {

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

            xParentComp( mxParent->getAccessibleContext(), uno::UNO_QUERY );

        if( xParentComp.is() )

            bShowing = implGetBoundingBox().Overlaps(

                vcl::unohelper::ConvertToVCLRect(xParentComp->getBounds()));

    }

    return bShowing;

}

sal_Int64 AccessibleBrowseBoxBase::implCreateStateSet()

{

    sal_Int64 nStateSet = 0;

    if( isAlive() )

    {

        // SHOWING done with mxParent

        if( implIsShowing() )

            nStateSet |= AccessibleStateType::SHOWING;

        // BrowseBox fills StateSet with states depending on object type

        mpBrowseBox->FillAccessibleStateSet( nStateSet, getType() );

    }

    else

        nStateSet |= AccessibleStateType::DEFUNC;

    return nStateSet;

}

// internal helper methods

bool AccessibleBrowseBoxBase::isAlive() const

{

    return OAccessible::isAlive() && mpBrowseBox;

}

void AccessibleBrowseBoxBase::ensureIsAlive() const

{

    if( !isAlive() )

        throw lang::DisposedException();

}

void AccessibleBrowseBoxBase::commitEvent(

        sal_Int16 _nEventId, const Any& _rNewValue, const Any& _rOldValue )

{

    NotifyAccessibleEvent(_nEventId, _rOldValue, _rNewValue);

}

sal_Int16 SAL_CALL AccessibleBrowseBoxBase::getAccessibleRole()

{

    osl::MutexGuard aGuard( getMutex() );

    ensureIsAlive();

    sal_Int16 nRole = AccessibleRole::UNKNOWN;

    switch ( meObjType )

    {

        case AccessibleBrowseBoxObjType::RowHeaderCell:

            nRole = AccessibleRole::ROW_HEADER;

            break;

        case AccessibleBrowseBoxObjType::ColumnHeaderCell:

            nRole = AccessibleRole::COLUMN_HEADER;

            break;

        case AccessibleBrowseBoxObjType::ColumnHeaderBar:

        case AccessibleBrowseBoxObjType::RowHeaderBar:

        case AccessibleBrowseBoxObjType::Table:

            nRole = AccessibleRole::TABLE;

            break;

        case AccessibleBrowseBoxObjType::TableCell:

            nRole = AccessibleRole::TABLE_CELL;

            break;

        case AccessibleBrowseBoxObjType::BrowseBox:

            nRole = AccessibleRole::PANEL;

            break;

        case AccessibleBrowseBoxObjType::CheckBoxCell:

            nRole = AccessibleRole::CHECK_BOX;

            break;

    }

    return nRole;

}

Reference<XAccessible > SAL_CALL AccessibleBrowseBoxBase::getAccessibleAtPoint( const css::awt::Point& )

{

    return nullptr;

}

void SAL_CALL AccessibleBrowseBoxBase::disposing( const css::lang::EventObject& )

{

    m_xFocusWindow = nullptr;

}

sal_Int32 SAL_CALL AccessibleBrowseBoxBase::getForeground(  )

{

    SolarMethodGuard aGuard(getMutex());

    ensureIsAlive();

    Color nColor;

    vcl::Window* pInst = mpBrowseBox->GetWindowInstance();

    if ( pInst )

    {

        if ( pInst->IsControlForeground() )

            nColor = pInst->GetControlForeground();

        else

        {

            vcl::Font aFont;

            if ( pInst->IsControlFont() )

                aFont = pInst->GetControlFont();

            else

                aFont = pInst->GetFont();

            nColor = aFont.GetColor();

        }

    }

    return sal_Int32(nColor);

}

sal_Int32 SAL_CALL AccessibleBrowseBoxBase::getBackground(  )

{

    SolarMethodGuard aGuard(getMutex());

    ensureIsAlive();

    Color nColor;

    vcl::Window* pInst = mpBrowseBox->GetWindowInstance();

    if ( pInst )

    {

        if ( pInst->IsControlBackground() )

            nColor = pInst->GetControlBackground();

        else

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

    }

    return sal_Int32(nColor);

}

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