/* -*- 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 <memory>
#include <i18nlangtag/languagetag.hxx>
#include <vcl/commandevent.hxx>
#include <vcl/builder.hxx>
#include <vcl/decoview.hxx>
#include <vcl/event.hxx>
#include <vcl/menu.hxx>
#include <vcl/specialchars.hxx>
#include <vcl/timer.hxx>
#include <vcl/vclevent.hxx>
#include <vcl/xtextedt.hxx>
#include <vcl/textview.hxx>
#include <vcl/ptrstyle.hxx>

#include <svl/undo.hxx>
#include <svl/lstner.hxx>
#include <vcl/uitest/uiobject.hxx>

#include <vcl/settings.hxx>
#include <vcl/toolkit/scrbar.hxx>
#include <vcl/toolkit/vclmedit.hxx>
#include <vcl/weld.hxx>
#include <osl/diagnose.h>
#include <tools/json_writer.hxx>

class ImpVclMEdit : public SfxListener
{
private:
    VclPtr<VclMultiLineEdit>   pVclMultiLineEdit;

    VclPtr<TextWindow>         mpTextWindow;
    VclPtr<ScrollBar>          mpHScrollBar;
    VclPtr<ScrollBar>          mpVScrollBar;
    VclPtr<ScrollBarBox>       mpScrollBox;

    tools::Long                mnTextWidth;
    mutable Selection   maSelection;

protected:
    virtual void        Notify( SfxBroadcaster& rBC, const SfxHint& rHint ) override;
    void                ImpUpdateScrollBarVis( WinBits nWinStyle );
    void                ImpInitScrollBars();
    void                ImpSetScrollBarRanges();
    void                ImpSetHScrollBarThumbPos();
    DECL_LINK(    ScrollHdl, ScrollBar*, void );

public:
                ImpVclMEdit( VclMultiLineEdit* pVclMultiLineEdit, WinBits nWinStyle );
                virtual ~ImpVclMEdit() override;

    void        SetModified( bool bMod );

    void        SetReadOnly( bool bRdOnly );
    bool        IsReadOnly() const;

    void        SetMaxTextLen(sal_Int32 nLen);
    sal_Int32   GetMaxTextLen() const;

    void        SetMaxTextWidth(tools::Long nMaxWidth);

    void        InsertText( const OUString& rStr );
    OUString    GetSelected() const;
    OUString    GetSelected( LineEnd aSeparator ) const;

    void        SetSelection( const Selection& rSelection );
    const Selection& GetSelection() const;

    void        Cut();
    void        Copy();
    void        Paste();

    void        SetText( const OUString& rStr );
    OUString    GetText() const;
    OUString    GetText( LineEnd aSeparator ) const;
    OUString    GetTextLines( LineEnd aSeparator ) const;

    void        Resize();
    void        GetFocus();

    bool        HandleCommand( const CommandEvent& rCEvt );

    void        Enable( bool bEnable );

    Size        CalcMinimumSize() const;
    Size        CalcBlockSize( sal_uInt16 nColumns, sal_uInt16 nLines ) const;
    void        GetMaxVisColumnsAndLines( sal_uInt16& rnCols, sal_uInt16& rnLines ) const;

    void        SetAlign( WinBits nWinStyle );

    void        InitFromStyle( WinBits nWinStyle );

    TextWindow* GetTextWindow() { return mpTextWindow; }
    ScrollBar&  GetHScrollBar() { return *mpHScrollBar; }
    ScrollBar&  GetVScrollBar() { return *mpVScrollBar; }
};

ImpVclMEdit::ImpVclMEdit( VclMultiLineEdit* pEdt, WinBits nWinStyle )
    : pVclMultiLineEdit(pEdt)
    , mpTextWindow(VclPtr<TextWindow>::Create(pEdt))
    , mpHScrollBar(VclPtr<ScrollBar>::Create(pVclMultiLineEdit, WB_HSCROLL|WB_DRAG))
    , mpVScrollBar(VclPtr<ScrollBar>::Create(pVclMultiLineEdit, WB_VSCROLL|WB_DRAG))
    , mpScrollBox(VclPtr<ScrollBarBox>::Create(pVclMultiLineEdit, WB_SIZEABLE))
    , mnTextWidth(0)
{
    mpVScrollBar->SetScrollHdl( LINK( this, ImpVclMEdit, ScrollHdl ) );
    mpHScrollBar->SetScrollHdl( LINK( this, ImpVclMEdit, ScrollHdl ) );
    mpTextWindow->Show();
    InitFromStyle( nWinStyle );
    StartListening( *mpTextWindow->GetTextEngine() );
}

void ImpVclMEdit::ImpUpdateScrollBarVis( WinBits nWinStyle )
{
    const bool bHaveVScroll = mpVScrollBar->IsVisible();
    const bool bHaveHScroll = mpHScrollBar->IsVisible();
    const bool bHaveScrollBox = mpScrollBox->IsVisible();

    bool bNeedVScroll = ( nWinStyle & WB_VSCROLL ) == WB_VSCROLL;
    const bool bNeedHScroll = ( nWinStyle & WB_HSCROLL ) == WB_HSCROLL;

    const bool bAutoVScroll = ( nWinStyle & WB_AUTOVSCROLL ) == WB_AUTOVSCROLL;
    if ( !bNeedVScroll && bAutoVScroll )
    {
        TextEngine& rEngine( *mpTextWindow->GetTextEngine() );
        tools::Long nOverallTextHeight(0);
        for ( sal_uInt32 i=0; i<rEngine.GetParagraphCount(); ++i )
            nOverallTextHeight += rEngine.GetTextHeight( i );
        if ( nOverallTextHeight > mpTextWindow->GetOutputSizePixel().Height() )
            bNeedVScroll = true;
    }

    const bool bNeedScrollBox = bNeedVScroll && bNeedHScroll;

    bool bScrollbarsChanged = false;
    if ( bHaveVScroll != bNeedVScroll )
    {
        mpVScrollBar->Show(bNeedVScroll);
        bScrollbarsChanged = true;
    }

    if ( bHaveHScroll != bNeedHScroll )
    {
        mpHScrollBar->Show(bNeedHScroll);
        bScrollbarsChanged = true;
    }

    if ( bHaveScrollBox != bNeedScrollBox )
    {
        mpScrollBox->Show(bNeedScrollBox);
    }

    if ( bScrollbarsChanged )
    {
        ImpInitScrollBars();
        Resize();
    }
}

void ImpVclMEdit::InitFromStyle( WinBits nWinStyle )
{
    ImpUpdateScrollBarVis( nWinStyle );
    SetAlign( nWinStyle );

    if ( nWinStyle & WB_NOHIDESELECTION )
        mpTextWindow->SetAutoFocusHide( false );
    else
        mpTextWindow->SetAutoFocusHide( true );

    if ( nWinStyle & WB_READONLY )
        mpTextWindow->GetTextView()->SetReadOnly( true );
    else
        mpTextWindow->GetTextView()->SetReadOnly( false );

    if ( nWinStyle & WB_IGNORETAB )
    {
        mpTextWindow->SetIgnoreTab( true );
    }
    else
    {
        mpTextWindow->SetIgnoreTab( false );
        // #103667# VclMultiLineEdit has the flag, but focusable window also needs this flag
        WinBits nStyle = mpTextWindow->GetStyle();
        nStyle |= WB_NODIALOGCONTROL;
        mpTextWindow->SetStyle( nStyle );
    }
}

ImpVclMEdit::~ImpVclMEdit()
{
    EndListening( *mpTextWindow->GetTextEngine() );
    mpTextWindow.disposeAndClear();
    mpHScrollBar.disposeAndClear();
    mpVScrollBar.disposeAndClear();
    mpScrollBox.disposeAndClear();
    pVclMultiLineEdit.disposeAndClear();
}

void ImpVclMEdit::ImpSetScrollBarRanges()
{
    const tools::Long nTextHeight = mpTextWindow->GetTextEngine()->GetTextHeight();
    mpVScrollBar->SetRange( Range( 0, nTextHeight-1 ) );

    mpHScrollBar->SetRange( Range( 0, mnTextWidth-1 ) );
}

void ImpVclMEdit::ImpInitScrollBars()
{
    static const sal_Unicode sampleChar = { 'x' };

    ImpSetScrollBarRanges();

    Size aCharBox;
    aCharBox.setWidth( mpTextWindow->GetTextWidth( OUString(sampleChar) ) );
    aCharBox.setHeight( mpTextWindow->GetTextHeight() );
    Size aOutSz = mpTextWindow->GetOutputSizePixel();

    mpHScrollBar->SetVisibleSize( aOutSz.Width() );
    mpHScrollBar->SetPageSize( aOutSz.Width() * 8 / 10 );
    mpHScrollBar->SetLineSize( aCharBox.Width()*10 );
    ImpSetHScrollBarThumbPos();

    mpVScrollBar->SetVisibleSize( aOutSz.Height() );
    mpVScrollBar->SetPageSize( aOutSz.Height() * 8 / 10 );
    mpVScrollBar->SetLineSize( aCharBox.Height() );
    mpVScrollBar->SetThumbPos( mpTextWindow->GetTextView()->GetStartDocPos().Y() );
}

void ImpVclMEdit::ImpSetHScrollBarThumbPos()
{
    tools::Long nX = mpTextWindow->GetTextView()->GetStartDocPos().X();
    if ( !mpTextWindow->GetTextEngine()->IsRightToLeft() )
        mpHScrollBar->SetThumbPos( nX );
    else
        mpHScrollBar->SetThumbPos( mnTextWidth - mpHScrollBar->GetVisibleSize() - nX );

}

IMPL_LINK( ImpVclMEdit, ScrollHdl, ScrollBar*, pCurScrollBar, void )
{
    tools::Long nDiffX = 0, nDiffY = 0;

    if ( pCurScrollBar == mpVScrollBar )
        nDiffY = mpTextWindow->GetTextView()->GetStartDocPos().Y() - pCurScrollBar->GetThumbPos();
    else if ( pCurScrollBar == mpHScrollBar )
        nDiffX = mpTextWindow->GetTextView()->GetStartDocPos().X() - pCurScrollBar->GetThumbPos();

    mpTextWindow->GetTextView()->Scroll( nDiffX, nDiffY );
    // mpTextWindow->GetTextView()->ShowCursor( false, true );
}

void ImpVclMEdit::SetAlign( WinBits nWinStyle )
{
    bool bRTL = AllSettings::GetLayoutRTL();
    mpTextWindow->GetTextEngine()->SetRightToLeft( bRTL );

    if ( nWinStyle & WB_CENTER )
        mpTextWindow->GetTextEngine()->SetTextAlign( TxtAlign::Center );
    else if ( nWinStyle & WB_RIGHT )
        mpTextWindow->GetTextEngine()->SetTextAlign( !bRTL ? TxtAlign::Right : TxtAlign::Left );
    else if ( nWinStyle & WB_LEFT )
        mpTextWindow->GetTextEngine()->SetTextAlign( !bRTL ? TxtAlign::Left : TxtAlign::Right );
}

void ImpVclMEdit::SetModified( bool bMod )
{
    mpTextWindow->GetTextEngine()->SetModified( bMod );
}

void ImpVclMEdit::SetReadOnly( bool bRdOnly )
{
    mpTextWindow->GetTextView()->SetReadOnly( bRdOnly );
    // TODO: Adjust color?
}

bool ImpVclMEdit::IsReadOnly() const
{
    return mpTextWindow->GetTextView()->IsReadOnly();
}

void ImpVclMEdit::SetMaxTextLen(sal_Int32 nLen)
{
    mpTextWindow->GetTextEngine()->SetMaxTextLen(nLen);
}

sal_Int32 ImpVclMEdit::GetMaxTextLen() const
{
    return mpTextWindow->GetTextEngine()->GetMaxTextLen();
}

void ImpVclMEdit::InsertText( const OUString& rStr )
{
    mpTextWindow->GetTextView()->InsertText( rStr );
}

OUString ImpVclMEdit::GetSelected() const
{
    return mpTextWindow->GetTextView()->GetSelected();
}

OUString ImpVclMEdit::GetSelected( LineEnd aSeparator ) const
{
    return mpTextWindow->GetTextView()->GetSelected( aSeparator );
}

void ImpVclMEdit::SetMaxTextWidth(tools::Long nMaxWidth)
{
    mpTextWindow->GetTextEngine()->SetMaxTextWidth(nMaxWidth);
}

void ImpVclMEdit::Resize()
{
    int nIteration = 1;
    do
    {
        WinBits nWinStyle( pVclMultiLineEdit->GetStyle() );
        if ( ( nWinStyle & WB_AUTOVSCROLL ) == WB_AUTOVSCROLL )
            ImpUpdateScrollBarVis( nWinStyle );

        Size aSz = pVclMultiLineEdit->GetOutputSizePixel();
        Size aEditSize = aSz;
        tools::Long nSBWidth = pVclMultiLineEdit->GetSettings().GetStyleSettings().GetScrollBarSize();
        nSBWidth = pVclMultiLineEdit->CalcZoom( nSBWidth );

        if (mpHScrollBar->IsVisible())
            aSz.AdjustHeight( -(nSBWidth+1) );
        if (mpVScrollBar->IsVisible())
            aSz.AdjustWidth( -(nSBWidth+1) );

        if (!mpHScrollBar->IsVisible())
            mpTextWindow->GetTextEngine()->SetMaxTextWidth( aSz.Width() );
        else
            mpHScrollBar->setPosSizePixel( 0, aEditSize.Height()-nSBWidth, aSz.Width(), nSBWidth );

        Point aTextWindowPos;
        if (mpVScrollBar->IsVisible())
        {
            if( AllSettings::GetLayoutRTL() )
            {
                mpVScrollBar->setPosSizePixel( 0, 0, nSBWidth, aSz.Height() );
                aTextWindowPos.AdjustX(nSBWidth );
            }
            else
                mpVScrollBar->setPosSizePixel( aEditSize.Width()-nSBWidth, 0, nSBWidth, aSz.Height() );
        }

        if (mpScrollBox->IsVisible())
            mpScrollBox->setPosSizePixel( aSz.Width(), aSz.Height(), nSBWidth, nSBWidth );

        Size aTextWindowSize( aSz );
        if ( aTextWindowSize.Width() < 0 )
            aTextWindowSize.setWidth( 0 );
        if ( aTextWindowSize.Height() < 0 )
            aTextWindowSize.setHeight( 0 );

        Size aOldTextWindowSize( mpTextWindow->GetSizePixel() );
        mpTextWindow->SetPosSizePixel( aTextWindowPos, aTextWindowSize );
        if ( aOldTextWindowSize == aTextWindowSize )
            break;

        // Changing the text window size might effectively have changed the need for
        // scrollbars, so do another iteration.
        ++nIteration;
        OSL_ENSURE( nIteration < 3, "ImpVclMEdit::Resize: isn't this expected to terminate with the second iteration?" );

    } while ( nIteration <= 3 );    // artificial break after four iterations

    ImpInitScrollBars();
}

void ImpVclMEdit::GetFocus()
{
    mpTextWindow->GrabFocus();
}

void ImpVclMEdit::Cut()
{
    if ( !mpTextWindow->GetTextView()->IsReadOnly() )
        mpTextWindow->GetTextView()->Cut();
}

void ImpVclMEdit::Copy()
{
    mpTextWindow->GetTextView()->Copy();
}

void ImpVclMEdit::Paste()
{
    if ( !mpTextWindow->GetTextView()->IsReadOnly() )
        mpTextWindow->GetTextView()->Paste();
}

void ImpVclMEdit::SetText( const OUString& rStr )
{
    bool bWasModified = mpTextWindow->GetTextEngine()->IsModified();
    mpTextWindow->GetTextEngine()->SetText( rStr );
    if ( !bWasModified )
        mpTextWindow->GetTextEngine()->SetModified( false );

    mpTextWindow->GetTextView()->SetSelection( TextSelection() );

    WinBits nWinStyle( pVclMultiLineEdit->GetStyle() );
    if ( ( nWinStyle & WB_AUTOVSCROLL ) == WB_AUTOVSCROLL )
        ImpUpdateScrollBarVis( nWinStyle );
}

OUString ImpVclMEdit::GetText() const
{
    return mpTextWindow->GetTextEngine()->GetText();
}

OUString ImpVclMEdit::GetText( LineEnd aSeparator ) const
{
    return mpTextWindow->GetTextEngine()->GetText( aSeparator );
}

OUString ImpVclMEdit::GetTextLines( LineEnd aSeparator ) const
{
    return mpTextWindow->GetTextEngine()->GetTextLines( aSeparator );
}

void ImpVclMEdit::Notify( SfxBroadcaster&, const SfxHint& rHint )
{
    const TextHint* pTextHint = dynamic_cast<const TextHint*>(&rHint);
    if ( !pTextHint )
        return;

    switch (pTextHint->GetId())
    {
        case SfxHintId::TextViewScrolled:
            if (mpHScrollBar->IsVisible())
                ImpSetHScrollBarThumbPos();
            if (mpVScrollBar->IsVisible())
                mpVScrollBar->SetThumbPos( mpTextWindow->GetTextView()->GetStartDocPos().Y() );
            break;

        case SfxHintId::TextHeightChanged:
            if ( mpTextWindow->GetTextView()->GetStartDocPos().Y() )
            {
                tools::Long nOutHeight = mpTextWindow->GetOutputSizePixel().Height();
                tools::Long nTextHeight = mpTextWindow->GetTextEngine()->GetTextHeight();
                if ( nTextHeight < nOutHeight )
                    mpTextWindow->GetTextView()->Scroll( 0, mpTextWindow->GetTextView()->GetStartDocPos().Y() );
            }
            ImpSetScrollBarRanges();
            break;

        case SfxHintId::TextFormatted:
            if (mpHScrollBar->IsVisible())
            {
                const tools::Long nWidth = mpTextWindow->GetTextEngine()->CalcTextWidth();
                if ( nWidth != mnTextWidth )
                {
                    mnTextWidth = nWidth;
                    mpHScrollBar->SetRange( Range( 0, mnTextWidth-1 ) );
                    ImpSetHScrollBarThumbPos();
                }
            }
            break;

        case SfxHintId::TextModified:
            ImpUpdateScrollBarVis(pVclMultiLineEdit->GetStyle());
            pVclMultiLineEdit->Modify();
            break;

        case SfxHintId::TextViewSelectionChanged:
            pVclMultiLineEdit->SelectionChanged();
            break;

        case SfxHintId::TextViewCaretChanged:
            pVclMultiLineEdit->CaretChanged();
            break;

        default: break;
    }
}

void ImpVclMEdit::SetSelection( const Selection& rSelection )
{
    OUString aText = mpTextWindow->GetTextEngine()->GetText();

    Selection aNewSelection( rSelection );
    if ( aNewSelection.Min() < 0 )
        aNewSelection.Min() = 0;
    else if ( aNewSelection.Min() > aText.getLength() )
        aNewSelection.Min() = aText.getLength();
    if ( aNewSelection.Max() < 0 )
        aNewSelection.Max() = 0;
    else if ( aNewSelection.Max() > aText.getLength() )
        aNewSelection.Max() = aText.getLength();

    tools::Long nEnd = std::max( aNewSelection.Min(), aNewSelection.Max() );
    TextSelection aTextSel;
    sal_uInt32 nPara = 0;
    sal_Int32 nChar = 0;
    tools::Long x = 0;
    while ( x <= nEnd )
    {
        if ( x == aNewSelection.Min() )
            aTextSel.GetStart() = TextPaM( nPara, nChar );
        if ( x == aNewSelection.Max() )
            aTextSel.GetEnd() = TextPaM( nPara, nChar );

        if ( ( x < aText.getLength() ) && ( aText[ x ] == '\n' ) )
        {
            nPara++;
            nChar = 0;
        }
        else
            nChar++;
        x++;
    }
    mpTextWindow->GetTextView()->SetSelection( aTextSel );
}

const Selection& ImpVclMEdit::GetSelection() const
{
    maSelection = Selection();
    TextSelection aTextSel( mpTextWindow->GetTextView()->GetSelection() );
    aTextSel.Justify();
    // flatten selection => every line-break a character

    ExtTextEngine* pExtTextEngine = mpTextWindow->GetTextEngine();
    // paragraphs before
    for ( sal_uInt32 n = 0; n < aTextSel.GetStart().GetPara(); ++n )
    {
        maSelection.Min() += pExtTextEngine->GetTextLen( n );
        maSelection.Min()++;
    }

    // first paragraph with selection
    maSelection.Max() = maSelection.Min();
    maSelection.Min() += aTextSel.GetStart().GetIndex();

    for ( sal_uInt32 n = aTextSel.GetStart().GetPara(); n < aTextSel.GetEnd().GetPara(); ++n )
    {
        maSelection.Max() += pExtTextEngine->GetTextLen( n );
        maSelection.Max()++;
    }

    maSelection.Max() += aTextSel.GetEnd().GetIndex();

    return maSelection;
}

Size ImpVclMEdit::CalcMinimumSize() const
{
    Size aSz(   mpTextWindow->GetTextEngine()->CalcTextWidth(),
                mpTextWindow->GetTextEngine()->GetTextHeight() );

    if (mpHScrollBar->IsVisible())
        aSz.AdjustHeight(mpHScrollBar->GetSizePixel().Height() );
    if (mpVScrollBar->IsVisible())
        aSz.AdjustWidth(mpVScrollBar->GetSizePixel().Width() );

    return aSz;
}

Size ImpVclMEdit::CalcBlockSize( sal_uInt16 nColumns, sal_uInt16 nLines ) const
{
    static const sal_Unicode sampleChar = 'X';

    Size aSz;
    Size aCharSz;
    aCharSz.setWidth( mpTextWindow->GetTextWidth( OUString(sampleChar) ) );
    aCharSz.setHeight( mpTextWindow->GetTextHeight() );

    if ( nLines )
        aSz.setHeight( nLines*aCharSz.Height() );
    else
        aSz.setHeight( mpTextWindow->GetTextEngine()->GetTextHeight() );

    if ( nColumns )
        aSz.setWidth( nColumns*aCharSz.Width() );
    else
        aSz.setWidth( mpTextWindow->GetTextEngine()->CalcTextWidth() );

    if (mpHScrollBar->IsVisible())
        aSz.AdjustHeight(mpHScrollBar->GetSizePixel().Height() );
    if (mpVScrollBar->IsVisible())
        aSz.AdjustWidth(mpVScrollBar->GetSizePixel().Width() );

    return aSz;
}

void ImpVclMEdit::GetMaxVisColumnsAndLines( sal_uInt16& rnCols, sal_uInt16& rnLines ) const
{
    static const sal_Unicode sampleChar = { 'x' };
    Size aOutSz = mpTextWindow->GetOutputSizePixel();
    Size aCharSz( mpTextWindow->GetTextWidth( OUString(sampleChar) ), mpTextWindow->GetTextHeight() );
    rnCols = static_cast<sal_uInt16>(aOutSz.Width()/aCharSz.Width());
    rnLines = static_cast<sal_uInt16>(aOutSz.Height()/aCharSz.Height());
}

void ImpVclMEdit::Enable( bool bEnable )
{
    mpTextWindow->Enable( bEnable );
    if (mpHScrollBar->IsVisible())
        mpHScrollBar->Enable( bEnable );
    if (mpVScrollBar->IsVisible())
        mpVScrollBar->Enable( bEnable );
}

bool ImpVclMEdit::HandleCommand( const CommandEvent& rCEvt )
{
    bool bDone = false;
    CommandEventId nCommand = rCEvt.GetCommand();
    if (nCommand == CommandEventId::Wheel ||
        nCommand == CommandEventId::StartAutoScroll ||
        nCommand == CommandEventId::AutoScroll ||
        nCommand == CommandEventId::GesturePan)
    {
        ScrollBar* pHScrollBar = mpHScrollBar->IsVisible() ? mpHScrollBar.get() : nullptr;
        ScrollBar* pVScrollBar = mpVScrollBar->IsVisible() ? mpVScrollBar.get() : nullptr;
        mpTextWindow->HandleScrollCommand(rCEvt, pHScrollBar, pVScrollBar);
        bDone = true;
    }
    return bDone;
}

TextWindow::TextWindow(Edit* pParent)
    : Window(pParent)
    , mxParent(pParent)
{
    mbInMBDown = false;
    mbFocusSelectionHide = false;
    mbIgnoreTab = false;
    mbActivePopup = false;
    mbSelectOnTab = true;

    SetPointer( PointerStyle::Text );

    mpExtTextEngine.reset(new ExtTextEngine);
    mpExtTextEngine->SetMaxTextLen(EDIT_NOLIMIT);
    if( pParent->GetStyle() & WB_BORDER )
        mpExtTextEngine->SetLeftMargin( 2 );
    mpExtTextEngine->SetLocale( GetSettings().GetLanguageTag().getLocale() );
    mpExtTextView.reset(new TextView( mpExtTextEngine.get(), this ));
    mpExtTextEngine->InsertView( mpExtTextView.get() );
    mpExtTextEngine->EnableUndo( true );
    mpExtTextView->ShowCursor();

    Color aBackgroundColor = GetSettings().GetStyleSettings().GetWorkspaceColor();
    SetBackground( aBackgroundColor );
    pParent->SetBackground( aBackgroundColor );
}

TextWindow::~TextWindow()
{
    disposeOnce();
}

void TextWindow::dispose()
{
    mxParent.clear();
    mpExtTextView.reset();
    mpExtTextEngine.reset();
    Window::dispose();
}

void TextWindow::MouseMove( const MouseEvent& rMEvt )
{
    mpExtTextView->MouseMove( rMEvt );
    Window::MouseMove( rMEvt );
}

void TextWindow::MouseButtonDown( const MouseEvent& rMEvt )
{
    mbInMBDown = true;  // so that GetFocus does not select everything
    mpExtTextView->MouseButtonDown( rMEvt );
    GrabFocus();
    mbInMBDown = false;
}

void TextWindow::MouseButtonUp( const MouseEvent& rMEvt )
{
    mpExtTextView->MouseButtonUp( rMEvt );
}

void TextWindow::KeyInput( const KeyEvent& rKEvent )
{
    bool bDone = false;
    sal_uInt16 nCode = rKEvent.GetKeyCode().GetCode();
    if ( nCode == css::awt::Key::SELECT_ALL ||
         ( (nCode == KEY_A) && rKEvent.GetKeyCode().IsMod1() && !rKEvent.GetKeyCode().IsMod2() )
       )
    {
        mpExtTextView->SetSelection( TextSelection( TextPaM( 0, 0 ), TextPaM( TEXT_PARA_ALL, TEXT_INDEX_ALL ) ) );
        bDone = true;
    }
    else if ( (nCode == KEY_S) && rKEvent.GetKeyCode().IsShift() && rKEvent.GetKeyCode().IsMod1() )
    {
        if ( vcl::GetGetSpecialCharsFunction() )
        {
            // to maintain the selection
            mbActivePopup = true;
            OUString aChars = vcl::GetGetSpecialCharsFunction()(GetFrameWeld(), GetFont());
            if (!aChars.isEmpty())
            {
                mpExtTextView->InsertText( aChars );
                mpExtTextView->GetTextEngine()->SetModified( true );
            }
            mbActivePopup = false;
            bDone = true;
        }
    }
    else if ( nCode == KEY_TAB )
    {
        if ( !mbIgnoreTab || rKEvent.GetKeyCode().IsMod1() )
            bDone = mpExtTextView->KeyInput( rKEvent  );
    }
    else
    {
        bDone = mpExtTextView->KeyInput( rKEvent  );
    }

    if ( !bDone )
        Window::KeyInput( rKEvent );
}

void TextWindow::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
{
    mpExtTextView->Paint(rRenderContext, rRect);
}

void TextWindow::Resize()
{
}

void TextWindow::Command( const CommandEvent& rCEvt )
{
    if ( rCEvt.GetCommand() == CommandEventId::ContextMenu )
    {
        VclPtr<PopupMenu> pPopup = mxParent->CreatePopupMenu();
        bool bEnableCut = true;
        bool bEnableCopy = true;
        bool bEnableDelete = true;
        bool bEnablePaste = true;
        bool bEnableSpecialChar = true;
        bool bEnableUndo = true;

        if ( !mpExtTextView->HasSelection() )
        {
            bEnableCut = false;
            bEnableCopy = false;
            bEnableDelete = false;
        }
        if ( mpExtTextView->IsReadOnly() )
        {
            bEnableCut = false;
            bEnablePaste = false;
            bEnableDelete = false;
            bEnableSpecialChar = false;
        }
        if ( !mpExtTextView->GetTextEngine()->HasUndoManager() || !mpExtTextView->GetTextEngine()->GetUndoManager().GetUndoActionCount() )
        {
            bEnableUndo = false;
        }
        pPopup->EnableItem(pPopup->GetItemId("cut"), bEnableCut);
        pPopup->EnableItem(pPopup->GetItemId("copy"), bEnableCopy);
        pPopup->EnableItem(pPopup->GetItemId("delete"), bEnableDelete);
        pPopup->EnableItem(pPopup->GetItemId("paste"), bEnablePaste);
        pPopup->EnableItem(pPopup->GetItemId("specialchar"), bEnableSpecialChar);
        pPopup->EnableItem(pPopup->GetItemId("undo"), bEnableUndo);
        pPopup->ShowItem(pPopup->GetItemId("specialchar"), !vcl::GetGetSpecialCharsFunction());

        mbActivePopup = true;
        Point aPos = rCEvt.GetMousePosPixel();
        if ( !rCEvt.IsMouseEvent() )
        {
            // Sometime do show Menu centered in the selection !!!
            Size aSize = GetOutputSizePixel();
            aPos = Point( aSize.Width()/2, aSize.Height()/2 );
        }
        sal_uInt16 n = pPopup->Execute( this, aPos );
        OString sCommand = pPopup->GetItemIdent(n);
        if (sCommand == "undo")
        {
            mpExtTextView->Undo();
            mpExtTextEngine->SetModified( true );
            mpExtTextEngine->Broadcast( TextHint( SfxHintId::TextModified ) );
        }
        else if (sCommand == "cut")
        {
            mpExtTextView->Cut();
            mpExtTextEngine->SetModified( true );
            mpExtTextEngine->Broadcast( TextHint( SfxHintId::TextModified ) );
        }
        else if (sCommand == "copy")
        {
            mpExtTextView->Copy();
        }
        else if (sCommand == "paste")
        {
            mpExtTextView->Paste();
            mpExtTextEngine->SetModified( true );
            mpExtTextEngine->Broadcast( TextHint( SfxHintId::TextModified ) );
        }
        else if (sCommand == "delete")
        {
            mpExtTextView->DeleteSelected();
            mpExtTextEngine->SetModified( true );
            mpExtTextEngine->Broadcast( TextHint( SfxHintId::TextModified ) );
        }
        else if (sCommand == "selectall")
        {
            mpExtTextView->SetSelection( TextSelection( TextPaM( 0, 0 ), TextPaM( TEXT_PARA_ALL, TEXT_INDEX_ALL ) ) );
        }
        else if (sCommand == "specialchar")
        {
            OUString aChars = vcl::GetGetSpecialCharsFunction()(GetFrameWeld(), GetFont());
            if (!aChars.isEmpty())
            {
                mpExtTextView->InsertText( aChars );
                mpExtTextEngine->SetModified( true );
                mpExtTextEngine->Broadcast( TextHint( SfxHintId::TextModified ) );
            }
        }
        pPopup.clear();
        mbActivePopup = false;
    }
    else
    {
        mpExtTextView->Command( rCEvt );
    }
    Window::Command( rCEvt );
}

void TextWindow::GetFocus()
{
    Window::GetFocus();
    if ( mbActivePopup )
        return;

    bool bGotoCursor = !mpExtTextView->IsReadOnly();
    if ( mbFocusSelectionHide && IsReallyVisible() && mbSelectOnTab && !mbInMBDown )
    {
        // select everything, but do not scroll
        bool bAutoScroll = mpExtTextView->IsAutoScroll();
        mpExtTextView->SetAutoScroll( false );
        mpExtTextView->SetSelection( TextSelection( TextPaM( 0, 0 ), TextPaM( TEXT_PARA_ALL, TEXT_INDEX_ALL ) ) );
        mpExtTextView->SetAutoScroll( bAutoScroll );
        bGotoCursor = false;
    }
    mpExtTextView->SetPaintSelection( true );
    mpExtTextView->ShowCursor( bGotoCursor );
}

void TextWindow::LoseFocus()
{
    Window::LoseFocus();

    if ( mbFocusSelectionHide && !mbActivePopup && mpExtTextView )
        mpExtTextView->SetPaintSelection( false );
}

VclMultiLineEdit::VclMultiLineEdit( vcl::Window* pParent, WinBits nWinStyle )
    : Edit( pParent, nWinStyle )
{
    SetType( WindowType::MULTILINEEDIT );
    pImpVclMEdit.reset(new ImpVclMEdit( this, nWinStyle ));
    ImplInitSettings( true );

    SetCompoundControl( true );
    SetStyle( ImplInitStyle( nWinStyle ) );
}

VclMultiLineEdit::~VclMultiLineEdit()
{
    disposeOnce();
}

void VclMultiLineEdit::dispose()
{
    pImpVclMEdit.reset();
    Edit::dispose();
}

WinBits VclMultiLineEdit::ImplInitStyle( WinBits nStyle )
{
    if ( !(nStyle & WB_NOTABSTOP) )
        nStyle |= WB_TABSTOP;

    if ( !(nStyle & WB_NOGROUP) )
        nStyle |= WB_GROUP;

    if ( !(nStyle & WB_IGNORETAB ))
        nStyle |= WB_NODIALOGCONTROL;

    return nStyle;
}

void VclMultiLineEdit::ApplySettings(vcl::RenderContext& rRenderContext)
{
    const StyleSettings& rStyleSettings = rRenderContext.GetSettings().GetStyleSettings();

    // The Font has to be adjusted, as the TextEngine does not take care of
    // TextColor/Background

    Color aTextColor = rStyleSettings.GetFieldTextColor();
    if (IsControlForeground())
        aTextColor = GetControlForeground();

    if (!IsEnabled())
        aTextColor = rStyleSettings.GetDisableColor();

    vcl::Font aFont = rStyleSettings.GetFieldFont();
    aFont.SetTransparent(IsPaintTransparent());
    ApplyControlFont(rRenderContext, aFont);

    vcl::Font theFont = rRenderContext.GetFont();
    theFont.SetColor(aTextColor);
    if (IsPaintTransparent())
        theFont.SetFillColor(COL_TRANSPARENT);
    else
        theFont.SetFillColor(IsControlBackground() ? GetControlBackground() : rStyleSettings.GetFieldColor());

    pImpVclMEdit->GetTextWindow()->SetFont(theFont);
    // FIXME: next call causes infinite invalidation loop, rethink how to properly fix this situation
    // pImpVclMEdit->GetTextWindow()->GetTextEngine()->SetFont(theFont);
    pImpVclMEdit->GetTextWindow()->SetTextColor(aTextColor);

    if (IsPaintTransparent())
    {
        pImpVclMEdit->GetTextWindow()->SetPaintTransparent(true);
        pImpVclMEdit->GetTextWindow()->SetBackground();
        pImpVclMEdit->GetTextWindow()->SetControlBackground();
        rRenderContext.SetBackground();
        SetControlBackground();
    }
    else
    {
        if (IsControlBackground())
            pImpVclMEdit->GetTextWindow()->SetBackground(GetControlBackground());
        else
            pImpVclMEdit->GetTextWindow()->SetBackground(rStyleSettings.GetFieldColor());
        // also adjust for VclMultiLineEdit as the TextComponent might hide Scrollbars
        rRenderContext.SetBackground(pImpVclMEdit->GetTextWindow()->GetBackground());
    }
}

void VclMultiLineEdit::ImplInitSettings(bool bBackground)
{
    const StyleSettings& rStyleSettings = GetSettings().GetStyleSettings();

    // The Font has to be adjusted, as the TextEngine does not take care of
    // TextColor/Background

    Color aTextColor = rStyleSettings.GetFieldTextColor();
    if (IsControlForeground())
        aTextColor = GetControlForeground();
    if (!IsEnabled())
        aTextColor = rStyleSettings.GetDisableColor();

    vcl::Font aFont = rStyleSettings.GetFieldFont();
    aFont.SetTransparent(IsPaintTransparent());
    ApplyControlFont(*GetOutDev(), aFont);

    vcl::Font TheFont = GetFont();
    TheFont.SetColor(aTextColor);
    if (IsPaintTransparent())
        TheFont.SetFillColor(COL_TRANSPARENT);
    else
        TheFont.SetFillColor(IsControlBackground() ? GetControlBackground() : rStyleSettings.GetFieldColor());
    pImpVclMEdit->GetTextWindow()->SetFont(TheFont);
    pImpVclMEdit->GetTextWindow()->GetTextEngine()->SetFont(TheFont);
    pImpVclMEdit->GetTextWindow()->SetTextColor(aTextColor);

    if (!bBackground)
        return;

    if (IsPaintTransparent())
    {
        pImpVclMEdit->GetTextWindow()->SetPaintTransparent(true);
        pImpVclMEdit->GetTextWindow()->SetBackground();
        pImpVclMEdit->GetTextWindow()->SetControlBackground();
        SetBackground();
        SetControlBackground();
    }
    else
    {
        if (IsControlBackground())
            pImpVclMEdit->GetTextWindow()->SetBackground(GetControlBackground());
        else
            pImpVclMEdit->GetTextWindow()->SetBackground(rStyleSettings.GetFieldColor());
        // also adjust for VclMultiLineEdit as the TextComponent might hide Scrollbars
        SetBackground(pImpVclMEdit->GetTextWindow()->GetBackground());
    }
}

void VclMultiLineEdit::Modify()
{
    aModifyHdlLink.Call( *this );

    CallEventListeners( VclEventId::EditModify );
}

void VclMultiLineEdit::SelectionChanged()
{
    CallEventListeners(VclEventId::EditSelectionChanged);
}

void VclMultiLineEdit::CaretChanged()
{
    CallEventListeners(VclEventId::EditCaretChanged);
}

void VclMultiLineEdit::SetModifyFlag()
{
    pImpVclMEdit->SetModified( true );
}

void VclMultiLineEdit::SetReadOnly( bool bReadOnly )
{
    pImpVclMEdit->SetReadOnly( bReadOnly );
    Edit::SetReadOnly( bReadOnly );

    // #94921# ReadOnly can be overwritten in InitFromStyle() when WB not set.
    WinBits nStyle = GetStyle();
    if ( bReadOnly )
        nStyle |= WB_READONLY;
    else
        nStyle &= ~WB_READONLY;
    SetStyle( nStyle );
}

bool VclMultiLineEdit::IsReadOnly() const
{
    if (!pImpVclMEdit)  // might be called from within the dtor, when pImpVclMEdit == NULL is a valid state
        return true;

    return pImpVclMEdit->IsReadOnly();
}

void VclMultiLineEdit::SetMaxTextLen(sal_Int32 nMaxLen)
{
    pImpVclMEdit->SetMaxTextLen(nMaxLen);
}

void VclMultiLineEdit::SetMaxTextWidth(tools::Long nMaxWidth)
{
    pImpVclMEdit->SetMaxTextWidth(nMaxWidth );
}

sal_Int32 VclMultiLineEdit::GetMaxTextLen() const
{
    return pImpVclMEdit->GetMaxTextLen();
}

void VclMultiLineEdit::ReplaceSelected( const OUString& rStr )
{
    pImpVclMEdit->InsertText( rStr );
}

void VclMultiLineEdit::DeleteSelected()
{
    pImpVclMEdit->InsertText( OUString() );
}

OUString VclMultiLineEdit::GetSelected() const
{
    return pImpVclMEdit->GetSelected();
}

OUString VclMultiLineEdit::GetSelected( LineEnd aSeparator ) const
{
    return pImpVclMEdit->GetSelected( aSeparator );
}

void VclMultiLineEdit::Cut()
{
    pImpVclMEdit->Cut();
}

void VclMultiLineEdit::Copy()
{
    pImpVclMEdit->Copy();
}

void VclMultiLineEdit::Paste()
{
    pImpVclMEdit->Paste();
}

void VclMultiLineEdit::SetText( const OUString& rStr )
{
    pImpVclMEdit->SetText( rStr );
}

OUString VclMultiLineEdit::GetText() const
{
    return pImpVclMEdit ? pImpVclMEdit->GetText() : OUString();
}

OUString VclMultiLineEdit::GetText( LineEnd aSeparator ) const
{
    return pImpVclMEdit ? pImpVclMEdit->GetText( aSeparator ) : OUString();
}

OUString VclMultiLineEdit::GetTextLines( LineEnd aSeparator ) const
{
    return pImpVclMEdit ? pImpVclMEdit->GetTextLines( aSeparator ) : OUString();
}

void VclMultiLineEdit::Resize()
{
    pImpVclMEdit->Resize();
}

void VclMultiLineEdit::GetFocus()
{
    if ( !pImpVclMEdit )  // might be called from within the dtor, when pImpVclMEdit == NULL is a valid state
        return;

    pImpVclMEdit->GetFocus();
}

void VclMultiLineEdit::SetSelection( const Selection& rSelection )
{
    pImpVclMEdit->SetSelection( rSelection );
}

const Selection& VclMultiLineEdit::GetSelection() const
{
    return pImpVclMEdit->GetSelection();
}

Size VclMultiLineEdit::CalcMinimumSize() const
{
    Size aSz = pImpVclMEdit->CalcMinimumSize();

    sal_Int32 nLeft, nTop, nRight, nBottom;
    static_cast<vcl::Window*>(const_cast<VclMultiLineEdit *>(this))->GetBorder( nLeft, nTop, nRight, nBottom );
    aSz.AdjustWidth(nLeft+nRight );
    aSz.AdjustHeight(nTop+nBottom );

    return aSz;
}

Size VclMultiLineEdit::CalcAdjustedSize( const Size& rPrefSize ) const
{
    Size aSz = rPrefSize;
    sal_Int32 nLeft, nTop, nRight, nBottom;
    static_cast<vcl::Window*>(const_cast<VclMultiLineEdit *>(this))->GetBorder( nLeft, nTop, nRight, nBottom );

    // center vertically for whole lines

    tools::Long nHeight = aSz.Height() - nTop - nBottom;
    tools::Long nLineHeight = pImpVclMEdit->CalcBlockSize( 1, 1 ).Height();
    tools::Long nLines = nHeight / nLineHeight;
    if ( nLines < 1 )
        nLines = 1;

    aSz.setHeight( nLines * nLineHeight );
    aSz.AdjustHeight(nTop+nBottom );

    return aSz;
}

Size VclMultiLineEdit::CalcBlockSize( sal_uInt16 nColumns, sal_uInt16 nLines ) const
{
    Size aSz = pImpVclMEdit->CalcBlockSize( nColumns, nLines );

    sal_Int32 nLeft, nTop, nRight, nBottom;
    static_cast<vcl::Window*>(const_cast<VclMultiLineEdit *>(this))->GetBorder( nLeft, nTop, nRight, nBottom );
    aSz.AdjustWidth(nLeft+nRight );
    aSz.AdjustHeight(nTop+nBottom );
    return aSz;
}

void VclMultiLineEdit::GetMaxVisColumnsAndLines( sal_uInt16& rnCols, sal_uInt16& rnLines ) const
{
    pImpVclMEdit->GetMaxVisColumnsAndLines( rnCols, rnLines );
}

void VclMultiLineEdit::StateChanged( StateChangedType nType )
{
    if( nType == StateChangedType::Enable )
    {
        pImpVclMEdit->Enable( IsEnabled() );
        ImplInitSettings( false );
    }
    else if( nType == StateChangedType::ReadOnly )
    {
        pImpVclMEdit->SetReadOnly( IsReadOnly() );
    }
    else if ( nType == StateChangedType::Zoom )
    {
        pImpVclMEdit->GetTextWindow()->SetZoom( GetZoom() );
        ImplInitSettings( false );
        Resize();
    }
    else if ( nType == StateChangedType::ControlFont )
    {
        ImplInitSettings( false );
        Resize();
        Invalidate();
    }
    else if ( nType == StateChangedType::ControlForeground )
    {
        ImplInitSettings( false );
        Invalidate();
    }
    else if ( nType == StateChangedType::ControlBackground )
    {
        ImplInitSettings( true );
        Invalidate();
    }
    else if ( nType == StateChangedType::Style )
    {
        pImpVclMEdit->InitFromStyle( GetStyle() );
        SetStyle( ImplInitStyle( GetStyle() ) );
    }
    else if ( nType == StateChangedType::InitShow )
    {
        if( IsPaintTransparent() )
        {
            pImpVclMEdit->GetTextWindow()->SetPaintTransparent( true );
            pImpVclMEdit->GetTextWindow()->SetBackground();
            pImpVclMEdit->GetTextWindow()->SetControlBackground();
            SetBackground();
            SetControlBackground();
        }
    }

    Control::StateChanged( nType );
}

void VclMultiLineEdit::DataChanged( const DataChangedEvent& rDCEvt )
{
    if ( (rDCEvt.GetType() == DataChangedEventType::SETTINGS) &&
         (rDCEvt.GetFlags() & AllSettingsFlags::STYLE) )
    {
        ImplInitSettings( true );
        Resize();
        Invalidate();
    }
    else
        Control::DataChanged( rDCEvt );
}

void VclMultiLineEdit::Draw( OutputDevice* pDev, const Point& rPos, SystemTextColorFlags nFlags )
{
    ImplInitSettings(true);

    Point aPos = pDev->LogicToPixel( rPos );
    Size aSize = GetSizePixel();

    vcl::Font aFont = pImpVclMEdit->GetTextWindow()->GetDrawPixelFont(pDev);
    aFont.SetTransparent( true );

    pDev->Push();
    pDev->SetMapMode();
    pDev->SetFont( aFont );
    pDev->SetTextFillColor();

    // Border/Background
    pDev->SetLineColor();
    pDev->SetFillColor();
    bool bBorder = (GetStyle() & WB_BORDER);
    bool bBackground = IsControlBackground();
    if ( bBorder || bBackground )
    {
        tools::Rectangle aRect( aPos, aSize );
        if ( bBorder )
        {
            DecorationView aDecoView( pDev );
            aRect = aDecoView.DrawFrame( aRect, DrawFrameStyle::DoubleIn );
        }
        if ( bBackground )
        {
            pDev->SetFillColor( GetControlBackground() );
            pDev->DrawRect( aRect );
        }
    }

    pDev->SetSystemTextColor(nFlags, IsEnabled());

    OUString aText = GetText();
    Size aTextSz( pDev->GetTextWidth( aText ), pDev->GetTextHeight() );
    sal_uLong nLines = static_cast<sal_uLong>(aSize.Height() / aTextSz.Height());
    if ( !nLines )
        nLines = 1;
    aTextSz.setHeight( nLines*aTextSz.Height() );
    tools::Long nOnePixel = GetDrawPixel( pDev, 1 );
    tools::Long nOffX = 3*nOnePixel;
    tools::Long nOffY = 2*nOnePixel;

    // Clipping?
    if ( ( nOffY < 0  ) || ( (nOffY+aTextSz.Height()) > aSize.Height() ) || ( (nOffX+aTextSz.Width()) > aSize.Width() ) )
    {
        tools::Rectangle aClip( aPos, aSize );
        if ( aTextSz.Height() > aSize.Height() )
            aClip.AdjustBottom(aTextSz.Height() - aSize.Height() + 1 );  // so that HP-printer does not 'optimize-away'
        pDev->IntersectClipRegion( aClip );
    }

    ExtTextEngine aTE;
    aTE.SetText( GetText() );
    aTE.SetMaxTextWidth( aSize.Width() );
    aTE.SetFont( aFont );
    aTE.SetTextAlign( pImpVclMEdit->GetTextWindow()->GetTextEngine()->GetTextAlign() );
    aTE.Draw( pDev, Point( aPos.X() + nOffX, aPos.Y() + nOffY ) );

    pDev->Pop();
}

bool VclMultiLineEdit::EventNotify( NotifyEvent& rNEvt )
{
    bool bDone = false;
    if( rNEvt.GetType() == NotifyEventType::COMMAND )
    {
        bDone = pImpVclMEdit->HandleCommand( *rNEvt.GetCommandEvent() );
    }
    return bDone || Edit::EventNotify( rNEvt );
}

bool VclMultiLineEdit::PreNotify( NotifyEvent& rNEvt )
{
    bool bDone = false;

    if( ( rNEvt.GetType() == NotifyEventType::KEYINPUT ) && ( !GetTextView()->IsCursorEnabled() ) )
    {
        const KeyEvent& rKEvent = *rNEvt.GetKeyEvent();
        if ( !rKEvent.GetKeyCode().IsShift() && ( rKEvent.GetKeyCode().GetGroup() == KEYGROUP_CURSOR ) )
        {
            bDone = true;
            TextSelection aSel = pImpVclMEdit->GetTextWindow()->GetTextView()->GetSelection();
            if ( aSel.HasRange() )
            {
                aSel.GetStart() = aSel.GetEnd();
                pImpVclMEdit->GetTextWindow()->GetTextView()->SetSelection( aSel );
            }
            else
            {
                switch ( rKEvent.GetKeyCode().GetCode() )
                {
                    case KEY_UP:
                    {
                        if ( pImpVclMEdit->GetVScrollBar().IsVisible() )
                            pImpVclMEdit->GetVScrollBar().DoScrollAction( ScrollType::LineUp );
                    }
                    break;
                    case KEY_DOWN:
                    {
                        if ( pImpVclMEdit->GetVScrollBar().IsVisible() )
                            pImpVclMEdit->GetVScrollBar().DoScrollAction( ScrollType::LineDown );
                    }
                    break;
                    case KEY_PAGEUP :
                    {
                        if ( pImpVclMEdit->GetVScrollBar().IsVisible() )
                            pImpVclMEdit->GetVScrollBar().DoScrollAction( ScrollType::PageUp );
                    }
                    break;
                    case KEY_PAGEDOWN:
                    {
                        if ( pImpVclMEdit->GetVScrollBar().IsVisible() )
                            pImpVclMEdit->GetVScrollBar().DoScrollAction( ScrollType::PageDown );
                    }
                    break;
                    case KEY_LEFT:
                    {
                        if ( pImpVclMEdit->GetHScrollBar().IsVisible() )
                            pImpVclMEdit->GetHScrollBar().DoScrollAction( ScrollType::LineUp );
                    }
                    break;
                    case KEY_RIGHT:
                    {
                        if ( pImpVclMEdit->GetHScrollBar().IsVisible() )
                            pImpVclMEdit->GetHScrollBar().DoScrollAction( ScrollType::LineDown );
                    }
                    break;
                    case KEY_HOME:
                    {
                        if ( rKEvent.GetKeyCode().IsMod1() )
                            pImpVclMEdit->GetTextWindow()->GetTextView()->
                                SetSelection( TextSelection( TextPaM( 0, 0 ) ) );
                    }
                    break;
                    case KEY_END:
                    {
                        if ( rKEvent.GetKeyCode().IsMod1() )
                            pImpVclMEdit->GetTextWindow()->GetTextView()->
                                SetSelection( TextSelection( TextPaM( TEXT_PARA_ALL, TEXT_INDEX_ALL ) ) );
                    }
                    break;
                    default:
                    {
                        bDone = false;
                    }
                }
            }
        }
    }

    return bDone || Edit::PreNotify( rNEvt );
}

// Internals for derived classes, e.g. TextComponent

ExtTextEngine* VclMultiLineEdit::GetTextEngine() const
{
    return pImpVclMEdit->GetTextWindow()->GetTextEngine();
}

TextView* VclMultiLineEdit::GetTextView() const
{
    return pImpVclMEdit->GetTextWindow()->GetTextView();
}

ScrollBar& VclMultiLineEdit::GetVScrollBar() const
{
    return pImpVclMEdit->GetVScrollBar();
}

void VclMultiLineEdit::EnableFocusSelectionHide( bool bHide )
{
    pImpVclMEdit->GetTextWindow()->SetAutoFocusHide( bHide );
}

void VclMultiLineEdit::DisableSelectionOnFocus()
{
    pImpVclMEdit->GetTextWindow()->DisableSelectionOnFocus();
}

void VclMultiLineEdit::EnableCursor( bool bEnable )
{
    GetTextView()->EnableCursor( bEnable );
}

bool VclMultiLineEdit::CanUp() const
{
    TextView* pTextView = GetTextView();
    const TextSelection& rTextSelection = pTextView->GetSelection();
    TextPaM aPaM(rTextSelection.GetEnd());
    return aPaM != pTextView->CursorUp(aPaM);
}

bool VclMultiLineEdit::CanDown() const
{
    TextView* pTextView = GetTextView();
    const TextSelection& rTextSelection = pTextView->GetSelection();
    TextPaM aPaM(rTextSelection.GetEnd());
    return aPaM != pTextView->CursorDown(aPaM);
}

TextWindow* VclMultiLineEdit::GetTextWindow()
{
    return pImpVclMEdit->GetTextWindow();
}

FactoryFunction VclMultiLineEdit::GetUITestFactory() const
{
    return MultiLineEditUIObject::create;
}

bool VclMultiLineEdit::set_property(const OString &rKey, const OUString &rValue)
{
    if (rKey == "cursor-visible")
        EnableCursor(toBool(rValue));
    else if (rKey == "accepts-tab")
        pImpVclMEdit->GetTextWindow()->SetIgnoreTab(!toBool(rValue));
    else
        return Edit::set_property(rKey, rValue);
    return true;
}

void VclMultiLineEdit::DumpAsPropertyTree(tools::JsonWriter& rJsonWriter)
{
    Edit::DumpAsPropertyTree(rJsonWriter);

    rJsonWriter.put("cursor", pImpVclMEdit->GetTextWindow()->GetTextView()->IsCursorEnabled());
}

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