/* -*- 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/accessiblemenucomponent.hxx>

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

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

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

#include <comphelper/accessiblecontexthelper.hxx>

#include <unotools/accessiblerelationsethelper.hxx>

#include <vcl/svapp.hxx>

#include <vcl/window.hxx>

#include <vcl/menu.hxx>

#include <vcl/settings.hxx>

#include <vcl/unohelp.hxx>

#include <i18nlangtag/languagetag.hxx>

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

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

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

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

using namespace ::comphelper;

bool OAccessibleMenuComponent::IsEnabled()

{

    return true;

}

bool OAccessibleMenuComponent::IsVisible()

{

    bool bVisible = false;

    if ( m_pMenu )

        bVisible = m_pMenu->IsMenuVisible();

    return bVisible;

}

void OAccessibleMenuComponent::FillAccessibleStateSet( sal_Int64& rStateSet )

{

    if ( IsEnabled() )

    {

        rStateSet |= AccessibleStateType::ENABLED;

        rStateSet |= AccessibleStateType::SENSITIVE;

    }

    rStateSet |= AccessibleStateType::FOCUSABLE;

    if ( IsFocused() )

        rStateSet |= AccessibleStateType::FOCUSED;

    if ( IsVisible() )

    {

        rStateSet |= AccessibleStateType::VISIBLE;

        rStateSet |= AccessibleStateType::SHOWING;

    }

    rStateSet |= AccessibleStateType::OPAQUE;

}

// OAccessible

awt::Rectangle OAccessibleMenuComponent::implGetBounds()

{

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

    if ( m_pMenu )

    {

        vcl::Window* pWindow = m_pMenu->GetWindow();

        if ( pWindow )

        {

            // get bounding rectangle of the window in screen coordinates

            AbsoluteScreenPixelRectangle aRect = pWindow->GetWindowExtentsAbsolute();

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

            // get position of the accessible parent in screen coordinates

            Reference< XAccessible > xParent = getAccessibleParent();

            if ( xParent.is() )

            {

                Reference< XAccessibleComponent > xParentComponent( xParent->getAccessibleContext(), UNO_QUERY );

                if ( xParentComponent.is() )

                {

                    awt::Point aParentScreenLoc = xParentComponent->getLocationOnScreen();

                    // calculate position of the window relative to the accessible parent

                    aBounds.X -= aParentScreenLoc.X;

                    aBounds.Y -= aParentScreenLoc.Y;

                }

            }

        }

    }

    return aBounds;

}

// XAccessibleContext

sal_Int64 OAccessibleMenuComponent::getAccessibleChildCount()

{

    OExternalLockGuard aGuard( this );

    return GetChildCount();

}

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

{

    OExternalLockGuard aGuard( this );

    if ( i < 0 || i >= GetChildCount() )

        throw IndexOutOfBoundsException();

    return GetChild( i );

}

Reference< XAccessible > OAccessibleMenuComponent::getAccessibleParent(  )

{

    OExternalLockGuard aGuard( this );

    Reference< XAccessible > xParent;

    if ( m_pMenu )

    {

        vcl::Window* pWindow = m_pMenu->GetWindow();

        if ( pWindow )

            xParent = pWindow->GetAccessibleParent();

    }

    return xParent;

}

sal_Int16 OAccessibleMenuComponent::getAccessibleRole(  )

{

    OExternalLockGuard aGuard( this );

    return AccessibleRole::UNKNOWN;

}

OUString OAccessibleMenuComponent::getAccessibleDescription( )

{

    OExternalLockGuard aGuard( this );

    OUString sDescription;

    if ( m_pMenu )

    {

        vcl::Window* pWindow = m_pMenu->GetWindow();

        if ( pWindow )

            sDescription = pWindow->GetAccessibleDescription();

    }

    return sDescription;

}

OUString OAccessibleMenuComponent::getAccessibleName(  )

{

    OExternalLockGuard aGuard( this );

    return OUString();

}

Reference< XAccessibleRelationSet > OAccessibleMenuComponent::getAccessibleRelationSet(  )

{

    OExternalLockGuard aGuard( this );

    return new utl::AccessibleRelationSetHelper;

}

Locale OAccessibleMenuComponent::getLocale(  )

{

    OExternalLockGuard aGuard( this );

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

}

// XAccessibleComponent

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

{

    OExternalLockGuard aGuard( this );

    return GetChildAt( rPoint );

}

awt::Point OAccessibleMenuComponent::getLocationOnScreen(  )

{

    OExternalLockGuard aGuard( this );

    awt::Point aPos;

    if ( m_pMenu )

    {

        vcl::Window* pWindow = m_pMenu->GetWindow();

        if ( pWindow )

        {

            AbsoluteScreenPixelRectangle aRect = pWindow->GetWindowExtentsAbsolute();

            aPos = vcl::unohelper::ConvertToAWTPoint(aRect.TopLeft());

        }

    }

    return aPos;

}

void OAccessibleMenuComponent::grabFocus(  )

{

    OExternalLockGuard aGuard( this );

    if ( m_pMenu )

    {

        vcl::Window* pWindow = m_pMenu->GetWindow();

        if ( pWindow )

            pWindow->GrabFocus();

    }

}

sal_Int32 OAccessibleMenuComponent::getForeground(  )

{

    OExternalLockGuard aGuard( this );

    const StyleSettings& rStyleSettings = Application::GetSettings().GetStyleSettings();

    Color nColor = rStyleSettings.GetMenuTextColor();

    return sal_Int32(nColor);

}

sal_Int32 OAccessibleMenuComponent::getBackground(  )

{

    OExternalLockGuard aGuard( this );

    return 0;

}

// XAccessibleSelection

void OAccessibleMenuComponent::selectAccessibleChild( sal_Int64 nChildIndex )

{

    OExternalLockGuard aGuard( this );

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

        throw IndexOutOfBoundsException();

    SelectChild( nChildIndex );

}

sal_Bool OAccessibleMenuComponent::isAccessibleChildSelected( sal_Int64 nChildIndex )

{

    OExternalLockGuard aGuard( this );

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

        throw IndexOutOfBoundsException();

    return IsChildSelected( nChildIndex );

}

void OAccessibleMenuComponent::clearAccessibleSelection(  )

{

    OExternalLockGuard aGuard( this );

    DeSelectAll();

}

void OAccessibleMenuComponent::selectAllAccessibleChildren(  )

{

    // This method makes no sense in a menu, and so does nothing.

}

sal_Int64 OAccessibleMenuComponent::getSelectedAccessibleChildCount(  )

{

    OExternalLockGuard aGuard( this );

    sal_Int64 nRet = 0;

    for ( sal_Int64 i = 0, nCount = GetChildCount(); i < nCount; i++ )

    {

        if ( IsChildSelected( i ) )

            ++nRet;

    }

    return nRet;

}

Reference< XAccessible > OAccessibleMenuComponent::getSelectedAccessibleChild( sal_Int64 nSelectedChildIndex )

{

    OExternalLockGuard aGuard( this );

    if ( nSelectedChildIndex < 0 || nSelectedChildIndex >= getSelectedAccessibleChildCount() )

        throw IndexOutOfBoundsException();

    Reference< XAccessible > xChild;

    for ( sal_Int64 i = 0, j = 0, nCount = GetChildCount(); i < nCount; i++ )

    {

        if ( IsChildSelected( i ) && ( j++ == nSelectedChildIndex ) )

        {

            xChild = GetChild( i );

            break;

        }

    }

    return xChild;

}

void OAccessibleMenuComponent::deselectAccessibleChild( sal_Int64 nChildIndex )

{

    OExternalLockGuard aGuard( this );

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

        throw IndexOutOfBoundsException();

    DeSelectAll();

}

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