/* -*- 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 <tools/gen.hxx>

#include <tools/debug.hxx>

#include <utility>

#include <vcl/svapp.hxx>

#include <vcl/settings.hxx>

#include <rtl/ustring.hxx>

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

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

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

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

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

#include <cppuhelper/supportsservice.hxx>

#include <i18nlangtag/languagetag.hxx>

#include <editeng/AccessibleEditableTextPara.hxx>

#include <editeng/eerdll.hxx>

#include <editeng/outliner.hxx>

#include <editeng/editrids.hrc>

#include <editeng/unoedsrc.hxx>

#include <svtools/colorcfg.hxx>

#include "AccessibleImageBullet.hxx"

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

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

namespace accessibility

{

AccessibleImageBullet::AccessibleImageBullet(uno::Reference<XAccessible> xParent,

                                             sal_Int64 nIndexInParent) :

    mnParagraphIndex( 0 ),

    mnIndexInParent(nIndexInParent),

    mpEditSource( nullptr ),

    maEEOffset( 0, 0 ),

    mxParent(std::move( xParent ))

{

    // these are always on

    mnStateSet = AccessibleStateType::VISIBLE;

    mnStateSet |= AccessibleStateType::SHOWING;

    mnStateSet |= AccessibleStateType::ENABLED;

    mnStateSet |= AccessibleStateType::SENSITIVE;

}

sal_Int64 SAL_CALL  AccessibleImageBullet::getAccessibleChildCount()

{

    return 0;

}

uno::Reference< XAccessible > SAL_CALL  AccessibleImageBullet::getAccessibleChild( sal_Int64 )

{

    throw lang::IndexOutOfBoundsException(u"No children available"_ustr,

                                          getXWeak() );

}

uno::Reference< XAccessible > SAL_CALL  AccessibleImageBullet::getAccessibleParent()

{

    return mxParent;

}

sal_Int64 SAL_CALL  AccessibleImageBullet::getAccessibleIndexInParent()

{

    return mnIndexInParent;

}

sal_Int16 SAL_CALL  AccessibleImageBullet::getAccessibleRole()

{

    return AccessibleRole::GRAPHIC;

}

OUString SAL_CALL  AccessibleImageBullet::getAccessibleDescription()

{

    // Get the string from the resource for the specified id.

    return EditResId(RID_SVXSTR_A11Y_IMAGEBULLET_DESCRIPTION);

}

OUString SAL_CALL  AccessibleImageBullet::getAccessibleName()

{

    // Get the string from the resource for the specified id.

    return EditResId(RID_SVXSTR_A11Y_IMAGEBULLET_NAME);

}

uno::Reference< XAccessibleRelationSet > SAL_CALL AccessibleImageBullet::getAccessibleRelationSet()

{

    // no relations, therefore empty

    return uno::Reference< XAccessibleRelationSet >();

}

sal_Int64 SAL_CALL AccessibleImageBullet::getAccessibleStateSet()

{

    SolarMutexGuard aGuard;

    // Create a copy of the state set and return it.

    return mnStateSet;

}

lang::Locale SAL_CALL AccessibleImageBullet::getLocale()

{

    SolarMutexGuard aGuard;

    DBG_ASSERT(GetParagraphIndex() >= 0,

               "AccessibleImageBullet::getLocale: paragraph index value overflow");

    // return locale of first character in the paragraph

    return LanguageTag(GetTextForwarder().GetLanguage( GetParagraphIndex(), 0 )).getLocale();

}

uno::Reference< XAccessible > SAL_CALL AccessibleImageBullet::getAccessibleAtPoint( const awt::Point& /*aPoint*/ )

{

    // as we have no children, empty reference

    return uno::Reference< XAccessible >();

}

awt::Rectangle AccessibleImageBullet::implGetBounds(  )

{

    DBG_ASSERT(GetParagraphIndex() >= 0,

               "AccessibleEditableTextPara::implGetBounds: index value overflow");

    SvxTextForwarder& rCacheTF = GetTextForwarder();

    EBulletInfo aBulletInfo = rCacheTF.GetBulletInfo( GetParagraphIndex() );

    tools::Rectangle aParentRect = rCacheTF.GetParaBounds( GetParagraphIndex() );

    if( aBulletInfo.nParagraph != EE_PARA_MAX &&

        aBulletInfo.bVisible &&

        aBulletInfo.nType == SVX_NUM_BITMAP )

    {

        tools::Rectangle aRect = aBulletInfo.aBounds;

        // subtract paragraph position (bullet pos is absolute in EditEngine/Outliner)

        aRect.Move( -aParentRect.Left(), -aParentRect.Top() );

        // convert to screen coordinates

        tools::Rectangle aScreenRect = AccessibleEditableTextPara::LogicToPixel( aRect,

                                                                          rCacheTF.GetMapMode(),

                                                                          GetViewForwarder() );

        // offset from shape/cell

        Point aOffset = maEEOffset;

        return awt::Rectangle( aScreenRect.Left() + aOffset.X(),

                               aScreenRect.Top() + aOffset.Y(),

                               aScreenRect.GetSize().Width(),

                               aScreenRect.GetSize().Height() );

    }

    return awt::Rectangle();

}

void SAL_CALL AccessibleImageBullet::grabFocus(  )

{

    throw uno::RuntimeException(u"Not focusable"_ustr, getXWeak());

}

sal_Int32 SAL_CALL AccessibleImageBullet::getForeground(  )

{

    // #104444# Added to XAccessibleComponent interface

    svtools::ColorConfig aColorConfig;

    Color nColor = aColorConfig.GetColorValue( svtools::FONTCOLOR ).nColor;

    return static_cast<sal_Int32>(nColor);

}

sal_Int32 SAL_CALL AccessibleImageBullet::getBackground(  )

{

    // #104444# Added to XAccessibleComponent interface

    Color aColor( Application::GetSettings().GetStyleSettings().GetWindowColor() );

    // the background is transparent

    aColor.SetAlpha(0);

    return static_cast<sal_Int32>( aColor );

}

void AccessibleImageBullet::SetEEOffset( const Point& rOffset )

{

    maEEOffset = rOffset;

}

void SAL_CALL AccessibleImageBullet::dispose()

{

    mxParent = nullptr;

    mpEditSource = nullptr;

    OAccessible::dispose();

}

void AccessibleImageBullet::SetEditSource( SvxEditSource* pEditSource )

{

    mpEditSource = pEditSource;

    if( !mpEditSource )

    {

        // going defunct

        UnSetState( AccessibleStateType::SHOWING );

        UnSetState( AccessibleStateType::VISIBLE );

        SetState( AccessibleStateType::INVALID );

        SetState( AccessibleStateType::DEFUNC );

    }

}

void AccessibleImageBullet::SetState( const sal_Int64 nStateId )

{

    if( !(mnStateSet & nStateId) )

    {

        mnStateSet |= nStateId;

        NotifyAccessibleEvent(AccessibleEventId::STATE_CHANGED, uno::Any(), uno::Any(nStateId));

    }

}

void AccessibleImageBullet::UnSetState( const sal_Int64 nStateId )

{

    if( mnStateSet & nStateId )

    {

        mnStateSet &= ~nStateId;

        NotifyAccessibleEvent(AccessibleEventId::STATE_CHANGED, uno::Any(nStateId), uno::Any());

    }

}

void AccessibleImageBullet::SetParagraphIndex( sal_Int32 nIndex )

{

    uno::Any aOldDesc;

    uno::Any aOldName;

    try

    {

        aOldDesc <<= getAccessibleDescription();

        aOldName <<= getAccessibleName();

    }

    catch( const uno::Exception& ) {} // optional behaviour

    sal_Int32 nOldIndex = mnParagraphIndex;

    mnParagraphIndex = nIndex;

    try

    {

        if( nOldIndex != nIndex )

        {

            // index and therefore description changed

            NotifyAccessibleEvent(AccessibleEventId::DESCRIPTION_CHANGED, aOldDesc, uno::Any(getAccessibleDescription()));

            NotifyAccessibleEvent(AccessibleEventId::NAME_CHANGED, aOldName, uno::Any(getAccessibleName()));

        }

    }

    catch( const uno::Exception& ) {} // optional behaviour

}

SvxEditSource& AccessibleImageBullet::GetEditSource() const

{

    if( !mpEditSource )

        throw uno::RuntimeException(u"No edit source, object is defunct"_ustr,

                                    cppu::getXWeak

                                      ( const_cast< AccessibleImageBullet* > (this) ) );  // disambiguate hierarchy

    return *mpEditSource;

}

SvxTextForwarder& AccessibleImageBullet::GetTextForwarder() const

{

    SvxEditSource& rEditSource = GetEditSource();

    SvxTextForwarder* pTextForwarder = rEditSource.GetTextForwarder();

    if( !pTextForwarder )

        throw uno::RuntimeException(u"Unable to fetch text forwarder, object is defunct"_ustr,

                                    cppu::getXWeak

                                      ( const_cast< AccessibleImageBullet* > (this) ) );  // disambiguate hierarchy

    if( !pTextForwarder->IsValid() )

        throw uno::RuntimeException(u"Text forwarder is invalid, object is defunct"_ustr,

                                    cppu::getXWeak

                                      ( const_cast< AccessibleImageBullet* > (this) ) );  // disambiguate hierarchy

    return *pTextForwarder;

}

SvxViewForwarder& AccessibleImageBullet::GetViewForwarder() const

{

    SvxEditSource& rEditSource = GetEditSource();

    SvxViewForwarder* pViewForwarder = rEditSource.GetViewForwarder();

    if( !pViewForwarder )

    {

        throw uno::RuntimeException(u"Unable to fetch view forwarder, object is defunct"_ustr,

                                    cppu::getXWeak

                                      ( const_cast< AccessibleImageBullet* > (this) ) );  // disambiguate hierarchy

    }

    if( !pViewForwarder->IsValid() )

        throw uno::RuntimeException(u"View forwarder is invalid, object is defunct"_ustr,

                                    cppu::getXWeak

                                      ( const_cast< AccessibleImageBullet* > (this) ) ); // disambiguate hierarchy

    return *pViewForwarder;

}

} // end of namespace accessibility

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