/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

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 * 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/vclxaccessiblecheckbox.hxx>

#include <svdata.hxx>

#include <strings.hrc>

#include <comphelper/accessiblecontexthelper.hxx>

#include <comphelper/accessiblekeybindinghelper.hxx>

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

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

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

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

#include <vcl/event.hxx>

#include <vcl/vclevent.hxx>

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;

// VCLXAccessibleCheckBox

VCLXAccessibleCheckBox::VCLXAccessibleCheckBox(CheckBox* pCheckBox)

    :ImplInheritanceHelper(pCheckBox)

{

    m_bChecked = IsChecked();

    m_bIndeterminate = IsIndeterminate();

}

bool VCLXAccessibleCheckBox::IsChecked() const

{

    VclPtr<CheckBox> pCheckBox = GetAs<CheckBox>();

    return pCheckBox && pCheckBox->IsChecked();

}

bool VCLXAccessibleCheckBox::IsIndeterminate() const

{

    VclPtr<CheckBox> pCheckBox = GetAs<CheckBox>();

    return pCheckBox && pCheckBox->GetState() == TRISTATE_INDET;

}

void VCLXAccessibleCheckBox::SetChecked( bool bChecked )

{

    if ( m_bChecked != bChecked )

    {

        Any aOldValue, aNewValue;

        if ( m_bChecked )

            aOldValue <<= AccessibleStateType::CHECKED;

        else

            aNewValue <<= AccessibleStateType::CHECKED;

        m_bChecked = bChecked;

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

    }

}

void VCLXAccessibleCheckBox::SetIndeterminate( bool bIndeterminate )

{

    if ( m_bIndeterminate != bIndeterminate )

    {

        Any aOldValue, aNewValue;

        if ( m_bIndeterminate )

            aOldValue <<= AccessibleStateType::INDETERMINATE;

        else

            aNewValue <<= AccessibleStateType::INDETERMINATE;

        m_bIndeterminate = bIndeterminate;

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

    }

}

void VCLXAccessibleCheckBox::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )

{

    switch ( rVclWindowEvent.GetId() )

    {

        case VclEventId::CheckboxToggle:

        {

            const sal_Int32 nOldValue = m_bIndeterminate ? 2 : (m_bChecked ? 1 : 0);

            SetChecked( IsChecked() );

            SetIndeterminate( IsIndeterminate() );

            const sal_Int32 nNewValue = m_bIndeterminate ? 2 : (m_bChecked ? 1 : 0);

            if (nOldValue != nNewValue)

                NotifyAccessibleEvent(AccessibleEventId::VALUE_CHANGED, Any(nOldValue), Any(nNewValue));

        }

        break;

        default:

            VCLXAccessibleTextComponent::ProcessWindowEvent( rVclWindowEvent );

   }

}

void VCLXAccessibleCheckBox::FillAccessibleStateSet( sal_Int64& rStateSet )

{

    VCLXAccessibleTextComponent::FillAccessibleStateSet( rStateSet );

    rStateSet |= AccessibleStateType::CHECKABLE;

    rStateSet |= AccessibleStateType::FOCUSABLE;

    if ( IsChecked() )

        rStateSet |= AccessibleStateType::CHECKED;

    if ( IsIndeterminate() )

        rStateSet |= AccessibleStateType::INDETERMINATE;

}

// XServiceInfo

OUString VCLXAccessibleCheckBox::getImplementationName()

{

    return u"com.sun.star.comp.toolkit.AccessibleCheckBox"_ustr;

}

Sequence< OUString > VCLXAccessibleCheckBox::getSupportedServiceNames()

{

    return { u"com.sun.star.awt.AccessibleCheckBox"_ustr };

}

// XAccessibleAction

sal_Int32 VCLXAccessibleCheckBox::getAccessibleActionCount( )

{

    OExternalLockGuard aGuard( this );

    return 1;

}

sal_Bool VCLXAccessibleCheckBox::doAccessibleAction ( sal_Int32 nIndex )

{

    OExternalLockGuard aGuard( this );

    if ( nIndex != 0 )

        throw IndexOutOfBoundsException();

    VclPtr<CheckBox> pCheckBox = GetAs<CheckBox>();

    if (pCheckBox)

    {

        sal_Int32 nValueMax = sal_Int32(1);

        if ( pCheckBox->IsTriStateEnabled() )

            nValueMax = sal_Int32(2);

        sal_Int32 nValue = static_cast<sal_Int32>(pCheckBox->GetState());

        ++nValue;

        if ( nValue > nValueMax )

            nValue = 0;

        pCheckBox->SetState(static_cast<TriState>(nValue));

    }

    return true;

}

OUString VCLXAccessibleCheckBox::getAccessibleActionDescription ( sal_Int32 nIndex )

{

    OExternalLockGuard aGuard( this );

    if ( nIndex != 0 )

        throw IndexOutOfBoundsException();

    if(IsChecked())

        return VclResId( RID_STR_ACC_ACTION_UNCHECK );

    else

        return VclResId( RID_STR_ACC_ACTION_CHECK );

}

Reference< XAccessibleKeyBinding > VCLXAccessibleCheckBox::getAccessibleActionKeyBinding( sal_Int32 nIndex )

{

    OExternalLockGuard aGuard( this );

    if ( nIndex != 0 )

        throw IndexOutOfBoundsException();

    rtl::Reference<OAccessibleKeyBindingHelper> pKeyBindingHelper = new OAccessibleKeyBindingHelper();

    VclPtr<vcl::Window> pWindow = GetWindow();

    if ( pWindow )

    {

        KeyEvent aKeyEvent = pWindow->GetActivationKey();

        vcl::KeyCode aKeyCode = aKeyEvent.GetKeyCode();

        if ( aKeyCode.GetCode() != 0 )

        {

            awt::KeyStroke aKeyStroke;

            aKeyStroke.Modifiers = 0;

            if ( aKeyCode.IsShift() )

                aKeyStroke.Modifiers |= awt::KeyModifier::SHIFT;

            if ( aKeyCode.IsMod1() )

                aKeyStroke.Modifiers |= awt::KeyModifier::MOD1;

            if ( aKeyCode.IsMod2() )

                aKeyStroke.Modifiers |= awt::KeyModifier::MOD2;

            if ( aKeyCode.IsMod3() )

                aKeyStroke.Modifiers |= awt::KeyModifier::MOD3;

            aKeyStroke.KeyCode = aKeyCode.GetCode();

            aKeyStroke.KeyChar = aKeyEvent.GetCharCode();

            aKeyStroke.KeyFunc = static_cast< sal_Int16 >( aKeyCode.GetFunction() );

            pKeyBindingHelper->AddKeyBinding( aKeyStroke );

        }

    }

    return pKeyBindingHelper;

}

// XAccessibleValue

Any VCLXAccessibleCheckBox::getCurrentValue(  )

{

    OExternalLockGuard aGuard( this );

    Any aValue;

    VclPtr<CheckBox> pCheckBox = GetAs<CheckBox>();

    if (pCheckBox)

        aValue <<= static_cast<sal_Int32>(pCheckBox->GetState());

    return aValue;

}

sal_Bool VCLXAccessibleCheckBox::setCurrentValue( const Any& aNumber )

{

    OExternalLockGuard aGuard( this );

    bool bReturn = false;

    VclPtr<CheckBox> pCheckBox = GetAs<CheckBox>();

    if (pCheckBox)

    {

        sal_Int32 nValue = 0, nValueMin = 0, nValueMax = 0;

        OSL_VERIFY( aNumber >>= nValue );

        nValueMax=implGetMaximumValue();

        if ( nValue < nValueMin )

            nValue = nValueMin;

        else if ( nValue > nValueMax )

            nValue = nValueMax;

        pCheckBox->SetState(static_cast<TriState>(nValue));

        bReturn = true;

    }

    return bReturn;

}

Any VCLXAccessibleCheckBox::getMaximumValue(  )

{

    OExternalLockGuard aGuard( this );

    Any aValue;

    aValue <<= implGetMaximumValue();

    return aValue;

}

sal_Int32 VCLXAccessibleCheckBox::implGetMaximumValue(  )

{

    VclPtr< CheckBox > pCheckBox = GetAs< CheckBox >();

    if ( pCheckBox && pCheckBox->IsTriStateEnabled() )

        return 2;

    return 1;

}

Any VCLXAccessibleCheckBox::getMinimumValue(  )

{

    OExternalLockGuard aGuard( this );

    Any aValue;

    aValue <<= sal_Int32(0);

    return aValue;

}

Any VCLXAccessibleCheckBox::getMinimumIncrement( )

{

    OExternalLockGuard aGuard( this );

    Any aValue;

    aValue <<= sal_Int32(1);

    return aValue;

}

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