/* -*- 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/vclxaccessibletextcomponent.hxx>

#include <com/sun/star/accessibility/AccessibleEventId.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 <comphelper/accessiblecontexthelper.hxx>

#include <vcl/accessibility/characterattributeshelper.hxx>

#include <vcl/window.hxx>

#include <vcl/mnemonic.hxx>

#include <vcl/svapp.hxx>

#include <vcl/unohelp2.hxx>

#include <vcl/ctrl.hxx>

#include <vcl/settings.hxx>

#include <vcl/unohelp.hxx>

#include <vcl/vclevent.hxx>

#include <i18nlangtag/languagetag.hxx>

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

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

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

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

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

using namespace ::comphelper;

VCLXAccessibleTextComponent::VCLXAccessibleTextComponent(vcl::Window* pWindow)

    : ImplInheritanceHelper(pWindow)

{

    if ( pWindow )

        m_sText = removeMnemonicFromString( pWindow->GetText() );

}

void VCLXAccessibleTextComponent::SetText( const OUString& sText )

{

    Any aOldValue, aNewValue;

    bool bChanged = false;

    if (!PreferFullTextInTextChangedEvent())

    {

        bChanged = implInitTextChangedEvent(m_sText, sText, aOldValue, aNewValue);

    }

    else if (sText != m_sText)

    {

        // use the full old/new text as old/new value

        TextSegment aDeletedText(m_sText, 0, m_sText.getLength());

        aOldValue <<= aDeletedText;

        TextSegment aInsertedText(sText, 0, sText.getLength());

        aNewValue <<= aInsertedText;

        bChanged = true;

    }

    if (bChanged)

    {

        m_sText = sText;

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

    }

    // check whether accessible name has also changed, since text is (often) used as name as well

    const OUString sName = getAccessibleName();

    if (sName != m_sOldName)

    {

        NotifyAccessibleEvent(AccessibleEventId::NAME_CHANGED, Any(m_sOldName), Any(sName));

        m_sOldName = sName;

    }

}

void VCLXAccessibleTextComponent::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )

{

    switch ( rVclWindowEvent.GetId() )

    {

        case VclEventId::WindowFrameTitleChanged:

        {

            VCLXAccessibleComponent::ProcessWindowEvent( rVclWindowEvent );

            SetText( implGetText() );

        }

        break;

        default:

            VCLXAccessibleComponent::ProcessWindowEvent( rVclWindowEvent );

   }

}

// OCommonAccessibleText

OUString VCLXAccessibleTextComponent::implGetText()

{

    OUString aText;

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

    if ( pWindow )

        aText = removeMnemonicFromString( pWindow->GetText() );

    return aText;

}

lang::Locale VCLXAccessibleTextComponent::implGetLocale()

{

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

}

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

{

    nStartIndex = 0;

    nEndIndex = 0;

}

// XComponent

void VCLXAccessibleTextComponent::disposing()

{

    VCLXAccessibleComponent::disposing();

    m_sText.clear();

}

// XAccessibleText

sal_Int32 VCLXAccessibleTextComponent::getCaretPosition()

{

    return -1;

}

sal_Bool VCLXAccessibleTextComponent::setCaretPosition( sal_Int32 nIndex )

{

    return setSelection( nIndex, nIndex );

}

sal_Unicode VCLXAccessibleTextComponent::getCharacter( sal_Int32 nIndex )

{

    OExternalLockGuard aGuard( this );

    return OCommonAccessibleText::implGetCharacter( implGetText(), nIndex );

}

Sequence< PropertyValue > VCLXAccessibleTextComponent::getCharacterAttributes( sal_Int32 nIndex, const Sequence< OUString >& aRequestedAttributes )

{

    OExternalLockGuard aGuard( this );

    Sequence< PropertyValue > aValues;

    OUString sText( implGetText() );

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

        throw IndexOutOfBoundsException();

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

    if ( pWindow )

    {

        vcl::Font aFont = pWindow->GetControlFont();

        Color nBackColor = pWindow->GetControlBackground();

        Color nColor = pWindow->GetControlForeground();

        // MT: Code with default font was introduced with the IA2 CWS, but I am not convinced that this is the correct font...

        // Decide what to do when we have a concrete issue.

        /*

        Font aDefaultVCLFont;

        OutputDevice* pDev = Application::GetDefaultDevice();

        if ( pDev )

        {

            aDefaultVCLFont = pDev->GetSettings().GetStyleSettings().GetAppFont();

            if ( !aFont.GetName().Len() )

            {

                String aDefaultName = aDefaultVCLFont.GetName();

                aFont.SetName( aDefaultName );

            }

            if ( !aFont.GetHeight() )

            {

                aFont.SetHeight( aDefaultVCLFont.GetHeight() );

            }

            if ( aFont.GetWeight() == WEIGHT_DONTKNOW )

            {

                aFont.SetWeight( aDefaultVCLFont.GetWeight() );

            }

            //if nColor is -1, it may indicate that the default color black is using.

            if ( nColor == -1)

            {

                nColor = aDefaultVCLFont.GetColor().GetColor();

            }

        }

        */

        // MT: Adjustment stuff was introduced with the IA2 CWS, but adjustment is not a character attribute...

        // In case we reintroduce it, use adjustment as extra parameter for the CharacterAttributesHelper...

        /*

        WinBits aBits = GetWindow()->GetStyle();

        sal_Int16 nAdjust = -1;

        if ( aBits & WB_LEFT )

        {

            nAdjust = style::ParagraphAdjust_LEFT;

        }

        else if ( aBits & WB_RIGHT )

        {

            nAdjust = style::ParagraphAdjust_RIGHT;

        }

        else if ( aBits & WB_CENTER )

        {

            nAdjust = style::ParagraphAdjust_CENTER;

        }

        */

        aValues = CharacterAttributesHelper( aFont, sal_Int32(nBackColor), sal_Int32(nColor) )

            .GetCharacterAttributes( aRequestedAttributes );

    }

    return aValues;

}

awt::Rectangle VCLXAccessibleTextComponent::getCharacterBounds( sal_Int32 nIndex )

{

    OExternalLockGuard aGuard( this );

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

        throw IndexOutOfBoundsException();

    awt::Rectangle aRect;

    VclPtr< Control > pControl = GetAs< Control >();

    if ( pControl )

        aRect = vcl::unohelper::ConvertToAWTRect(pControl->GetCharacterBounds(nIndex));

    return aRect;

}

sal_Int32 VCLXAccessibleTextComponent::getCharacterCount()

{

    OExternalLockGuard aGuard( this );

    return implGetText().getLength();

}

sal_Int32 VCLXAccessibleTextComponent::getIndexAtPoint( const awt::Point& aPoint )

{

    OExternalLockGuard aGuard( this );

    sal_Int32 nIndex = -1;

    VclPtr< Control > pControl = GetAs< Control >();

    if ( pControl )

        nIndex = pControl->GetIndexForPoint(vcl::unohelper::ConvertToVCLPoint(aPoint));

    return nIndex;

}

OUString VCLXAccessibleTextComponent::getSelectedText()

{

    OExternalLockGuard aGuard( this );

    return OCommonAccessibleText::getSelectedText();

}

sal_Int32 VCLXAccessibleTextComponent::getSelectionStart()

{

    OExternalLockGuard aGuard( this );

    return OCommonAccessibleText::getSelectionStart();

}

sal_Int32 VCLXAccessibleTextComponent::getSelectionEnd()

{

    OExternalLockGuard aGuard( this );

    return OCommonAccessibleText::getSelectionEnd();

}

sal_Bool VCLXAccessibleTextComponent::setSelection( sal_Int32 nStartIndex, sal_Int32 nEndIndex )

{

    OExternalLockGuard aGuard( this );

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

        throw IndexOutOfBoundsException();

    return false;

}

OUString VCLXAccessibleTextComponent::getText()

{

    OExternalLockGuard aGuard( this );

    return implGetText();

}

OUString VCLXAccessibleTextComponent::getTextRange( sal_Int32 nStartIndex, sal_Int32 nEndIndex )

{

    OExternalLockGuard aGuard( this );

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

}

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

{

    OExternalLockGuard aGuard( this );

    return OCommonAccessibleText::getTextAtIndex( nIndex, aTextType );

}

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

{

    OExternalLockGuard aGuard( this );

    return OCommonAccessibleText::getTextBeforeIndex( nIndex, aTextType );

}

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

{

    OExternalLockGuard aGuard( this );

    return OCommonAccessibleText::getTextBehindIndex( nIndex, aTextType );

}

sal_Bool VCLXAccessibleTextComponent::copyText( sal_Int32 nStartIndex, sal_Int32 nEndIndex )

{

    OExternalLockGuard aGuard( this );

    bool bReturn = false;

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

    if ( pWindow )

    {

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

        if ( xClipboard.is() )

        {

            OUString sText( OCommonAccessibleText::implGetTextRange( implGetText(), 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();

            bReturn = true;

        }

    }

    return bReturn;

}

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

{

    return false;

}

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