/* -*- 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 <accessibility/vclxaccessiblelistitem.hxx>

#include <accessibility/IComboListBoxHelper.hxx>

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

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

#include <cppuhelper/supportsservice.hxx>

#include <utility>

#include <vcl/svapp.hxx>

#include <vcl/toolkit/lstbox.hxx>

#include <vcl/unohelp.hxx>

#include <vcl/unohelp2.hxx>

#include <vcl/settings.hxx>

#include <unotools/accessiblerelationsethelper.hxx>

#include <i18nlangtag/languagetag.hxx>

namespace

{

    /// @throws css::lang::IndexOutOfBoundsException

    void checkIndex_Impl( sal_Int32 _nIndex, std::u16string_view _sText )

    {

        if ( _nIndex < 0 || _nIndex > static_cast<sal_Int32>(_sText.size()) )

            throw css::lang::IndexOutOfBoundsException();

    }

}

// class VCLXAccessibleListItem ------------------------------------------

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

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

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

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

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

// Ctor() and Dtor()

VCLXAccessibleListItem::VCLXAccessibleListItem(sal_Int32 _nIndexInParent,

                                               rtl::Reference<VCLXAccessibleList> _xParent)

    : m_nIndexInParent(_nIndexInParent)

    , m_bSelected(false)

    , m_bVisible(false)

    , m_xParent(std::move(_xParent))

{

    assert(m_xParent.is());

    IComboListBoxHelper* pListBoxHelper = m_xParent->getListBoxHelper();

    if (pListBoxHelper)

        m_sEntryText = pListBoxHelper->GetEntry(_nIndexInParent);

}

void VCLXAccessibleListItem::SetSelected( bool _bSelected )

{

    if ( m_bSelected != _bSelected )

    {

        Any aOldValue;

        Any aNewValue;

        if ( m_bSelected )

            aOldValue <<= AccessibleStateType::SELECTED;

        else

            aNewValue <<= AccessibleStateType::SELECTED;

        m_bSelected = _bSelected;

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

    }

}

void VCLXAccessibleListItem::SetVisible( bool _bVisible )

{

    if ( m_bVisible != _bVisible )

    {

        Any aOldValue, aNewValue;

        m_bVisible = _bVisible;

        (_bVisible ? aNewValue : aOldValue ) <<= AccessibleStateType::VISIBLE;

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

        (_bVisible ? aNewValue : aOldValue ) <<= AccessibleStateType::SHOWING;

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

    }

}

void VCLXAccessibleListItem::NotifyAccessibleEvent( sal_Int16 _nEventId,

                                                    const css::uno::Any& _aOldValue,

                                                    const css::uno::Any& _aNewValue )

{

    comphelper::OAccessible::NotifyAccessibleEvent(_nEventId, _aOldValue, _aNewValue);

}

// OCommonAccessibleText

OUString VCLXAccessibleListItem::implGetText()

{

    return m_sEntryText;

}

Locale VCLXAccessibleListItem::implGetLocale()

{

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

}

void VCLXAccessibleListItem::implGetSelection( sal_Int32& nStartIndex, sal_Int32& nEndIndex )

{

    nStartIndex = 0;

    nEndIndex = 0;

}

awt::Rectangle VCLXAccessibleListItem::implGetBounds()

{

    tools::Rectangle aRect;

    IComboListBoxHelper* pListBoxHelper = m_xParent.is() ? m_xParent->getListBoxHelper() : nullptr;

    if (pListBoxHelper)

    {

        aRect = pListBoxHelper->GetBoundingRectangle(m_nIndexInParent);

        // convert position relative to the combobox/listbox (parent's parent) to position relative

        // to direct parent by subtracting parent's relative position in the combobox/listbox

        aRect -= vcl::unohelper::ConvertToVCLPoint(m_xParent->getLocation());

    }

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

}

// XComponent

void SAL_CALL VCLXAccessibleListItem::disposing()

{

    m_sEntryText.clear();

    m_xParent = nullptr;

    OAccessible::disposing();

}

// XAccessibleContext

sal_Int64 SAL_CALL VCLXAccessibleListItem::getAccessibleChildCount(  )

{

    return 0;

}

Reference< XAccessible > SAL_CALL VCLXAccessibleListItem::getAccessibleChild( sal_Int64 )

{

    return Reference< XAccessible >();

}

Reference< XAccessible > SAL_CALL VCLXAccessibleListItem::getAccessibleParent(  )

{

    SolarMutexGuard aSolarGuard;

    return m_xParent;

}

sal_Int64 SAL_CALL VCLXAccessibleListItem::getAccessibleIndexInParent(  )

{

    return m_nIndexInParent;

}

sal_Int16 SAL_CALL VCLXAccessibleListItem::getAccessibleRole(  )

{

    return AccessibleRole::LIST_ITEM;

    //  return AccessibleRole::LABEL;

}

OUString SAL_CALL VCLXAccessibleListItem::getAccessibleDescription(  )

{

    // no description for every item

    return OUString();

}

OUString SAL_CALL VCLXAccessibleListItem::getAccessibleName(  )

{

    SolarMutexGuard aSolarGuard;

    // entry text == accessible name

    return m_sEntryText;

}

Reference< XAccessibleRelationSet > SAL_CALL VCLXAccessibleListItem::getAccessibleRelationSet(  )

{

    return new utl::AccessibleRelationSetHelper;

}

sal_Int64 SAL_CALL VCLXAccessibleListItem::getAccessibleStateSet(  )

{

    SolarMutexGuard aSolarGuard;

    sal_Int64 nStateSet = 0;

    if (isAlive())

    {

        nStateSet |= AccessibleStateType::TRANSIENT;

        IComboListBoxHelper* pListBoxHelper = m_xParent.is() ? m_xParent->getListBoxHelper() : nullptr;

        if (pListBoxHelper && pListBoxHelper->IsEnabled())

        {

            nStateSet |= AccessibleStateType::SELECTABLE;

            nStateSet |= AccessibleStateType::ENABLED;

            nStateSet |= AccessibleStateType::SENSITIVE;

        }

        if ( m_bSelected )

            nStateSet |= AccessibleStateType::SELECTED;

        if ( m_bVisible )

        {

            nStateSet |= AccessibleStateType::VISIBLE;

            nStateSet |= AccessibleStateType::SHOWING;

        }

    }

    else

        nStateSet |= AccessibleStateType::DEFUNC;

    return nStateSet;

}

Locale SAL_CALL VCLXAccessibleListItem::getLocale(  )

{

    SolarMutexGuard aSolarGuard;

    return implGetLocale();

}

// XAccessibleComponent

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

{

    return Reference< XAccessible >();

}

void SAL_CALL VCLXAccessibleListItem::grabFocus(  )

{

    // no focus for each item

}

// XAccessibleText

sal_Int32 SAL_CALL VCLXAccessibleListItem::getCaretPosition()

{

    return -1;

}

sal_Bool SAL_CALL VCLXAccessibleListItem::setCaretPosition( sal_Int32 nIndex )

{

    SolarMutexGuard aSolarGuard;

    if ( !implIsValidRange( nIndex, nIndex, m_sEntryText.getLength() ) )

        throw IndexOutOfBoundsException();

    return false;

}

sal_Unicode SAL_CALL VCLXAccessibleListItem::getCharacter( sal_Int32 nIndex )

{

    SolarMutexGuard aSolarGuard;

    return OCommonAccessibleText::implGetCharacter( m_sEntryText, nIndex );

}

Sequence< PropertyValue > SAL_CALL VCLXAccessibleListItem::getCharacterAttributes( sal_Int32 nIndex, const Sequence< OUString >& )

{

    SolarMutexGuard aSolarGuard;

    if ( !implIsValidIndex( nIndex, m_sEntryText.getLength() ) )

        throw IndexOutOfBoundsException();

    return Sequence< PropertyValue >();

}

awt::Rectangle SAL_CALL VCLXAccessibleListItem::getCharacterBounds( sal_Int32 nIndex )

{

    SolarMutexGuard aSolarGuard;

    if ( !implIsValidIndex( nIndex, m_sEntryText.getLength() ) )

        throw IndexOutOfBoundsException();

    awt::Rectangle aBounds( 0, 0, 0, 0 );

    IComboListBoxHelper* pListBoxHelper = m_xParent.is() ? m_xParent->getListBoxHelper() : nullptr;

    if (pListBoxHelper)

    {

        tools::Rectangle aCharRect = pListBoxHelper->GetEntryCharacterBounds( m_nIndexInParent, nIndex );

        tools::Rectangle aItemRect = pListBoxHelper->GetBoundingRectangle(m_nIndexInParent);

        aCharRect.Move( -aItemRect.Left(), -aItemRect.Top() );

        aBounds = vcl::unohelper::ConvertToAWTRect(aCharRect);

    }

    return aBounds;

}

sal_Int32 SAL_CALL VCLXAccessibleListItem::getCharacterCount()

{

    SolarMutexGuard aSolarGuard;

    return m_sEntryText.getLength();

}

sal_Int32 SAL_CALL VCLXAccessibleListItem::getIndexAtPoint( const awt::Point& aPoint )

{

    SolarMutexGuard aSolarGuard;

    sal_Int32 nIndex = -1;

    IComboListBoxHelper* pListBoxHelper = m_xParent.is() ? m_xParent->getListBoxHelper() : nullptr;

    if (pListBoxHelper)

    {

        sal_Int32 nPos = LISTBOX_ENTRY_NOTFOUND;

        tools::Rectangle aItemRect = pListBoxHelper->GetBoundingRectangle(m_nIndexInParent);

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

        aPnt += aItemRect.TopLeft();

        sal_Int32 nI = pListBoxHelper->GetIndexForPoint( aPnt, nPos );

        if ( nI != -1 && m_nIndexInParent == nPos )

            nIndex = nI;

    }

    return nIndex;

}

OUString SAL_CALL VCLXAccessibleListItem::getSelectedText()

{

    return OUString();

}

sal_Int32 SAL_CALL VCLXAccessibleListItem::getSelectionStart()

{

    return 0;

}

sal_Int32 SAL_CALL VCLXAccessibleListItem::getSelectionEnd()

{

    return 0;

}

sal_Bool SAL_CALL VCLXAccessibleListItem::setSelection( sal_Int32 nStartIndex, sal_Int32 nEndIndex )

{

    SolarMutexGuard aSolarGuard;

    if ( !implIsValidRange( nStartIndex, nEndIndex, m_sEntryText.getLength() ) )

        throw IndexOutOfBoundsException();

    return false;

}

OUString SAL_CALL VCLXAccessibleListItem::getText()

{

    SolarMutexGuard aSolarGuard;

    return m_sEntryText;

}

OUString VCLXAccessibleListItem::getTextRangeImpl(sal_Int32 nStartIndex, sal_Int32 nEndIndex)

{

    return OCommonAccessibleText::implGetTextRange(m_sEntryText, nStartIndex, nEndIndex);

}

OUString SAL_CALL VCLXAccessibleListItem::getTextRange( sal_Int32 nStartIndex, sal_Int32 nEndIndex )

{

    SolarMutexGuard aSolarGuard;

    return getTextRangeImpl(nStartIndex, nEndIndex);

}

css::accessibility::TextSegment SAL_CALL VCLXAccessibleListItem::getTextAtIndex( sal_Int32 nIndex, sal_Int16 aTextType )

{

    SolarMutexGuard aSolarGuard;

    return OCommonAccessibleText::getTextAtIndex( nIndex, aTextType );

}

css::accessibility::TextSegment SAL_CALL VCLXAccessibleListItem::getTextBeforeIndex( sal_Int32 nIndex, sal_Int16 aTextType )

{

    SolarMutexGuard aSolarGuard;

    return OCommonAccessibleText::getTextBeforeIndex( nIndex, aTextType );

}

css::accessibility::TextSegment SAL_CALL VCLXAccessibleListItem::getTextBehindIndex( sal_Int32 nIndex, sal_Int16 aTextType )

{

    SolarMutexGuard aSolarGuard;

    return OCommonAccessibleText::getTextBehindIndex( nIndex, aTextType );

}

sal_Bool SAL_CALL VCLXAccessibleListItem::copyText( sal_Int32 nStartIndex, sal_Int32 nEndIndex )

{

    SolarMutexGuard aSolarGuard;

    checkIndex_Impl( nStartIndex, m_sEntryText );

    checkIndex_Impl( nEndIndex, m_sEntryText );

    bool bRet = false;

    IComboListBoxHelper* pListBoxHelper = m_xParent.is() ? m_xParent->getListBoxHelper() : nullptr;

    if (pListBoxHelper)

    {

        Reference< datatransfer::clipboard::XClipboard > xClipboard = pListBoxHelper->GetClipboard();

        if ( xClipboard.is() )

        {

            OUString sText(getTextRangeImpl(nStartIndex, nEndIndex));

            rtl::Reference<vcl::unohelper::TextDataObject> pDataObj = new vcl::unohelper::TextDataObject( sText );

            SolarMutexReleaser aReleaser;

            xClipboard->setContents( pDataObj, nullptr );

            Reference< datatransfer::clipboard::XFlushableClipboard > xFlushableClipboard( xClipboard, uno::UNO_QUERY );

            if( xFlushableClipboard.is() )

                xFlushableClipboard->flushClipboard();

            bRet = true;

        }

    }

    return bRet;

}

sal_Bool VCLXAccessibleListItem::scrollSubstringTo( sal_Int32, sal_Int32, AccessibleScrollType )

{

    return false;

}

// AF (Oct. 29 2002): Return black as constant foreground color.  This is an

// initial implementation and has to be substituted by code that determines

// the color that is actually used.

sal_Int32 SAL_CALL VCLXAccessibleListItem::getForeground()

{

    return sal_Int32(COL_BLACK);

}

// AF (Oct. 29 2002): Return white as constant background color.  This is an

// initial implementation and has to be substituted by code that determines

// the color that is actually used.

sal_Int32 SAL_CALL VCLXAccessibleListItem::getBackground()

{

    return sal_Int32(COL_WHITE);

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */