/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_editeng.hxx"

#include <algorithm>
#include <editeng/eeitem.hxx>
#include <com/sun/star/i18n/WordType.hpp>

#include <svl/itemset.hxx>
#include <editeng/editeng.hxx>
#include <editeng/editview.hxx>
#include <editeng/unoedhlp.hxx>
#include <editeng/editdata.hxx>
#include <editeng/outliner.hxx>
#include <editeng/editobj.hxx>		// nur fuer die GetText-Kruecke

#include <editeng/unofored.hxx>

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

//------------------------------------------------------------------------

SvxEditEngineForwarder::SvxEditEngineForwarder( EditEngine& rEngine ) :
	rEditEngine( rEngine )
{
}

SvxEditEngineForwarder::~SvxEditEngineForwarder()
{
	//	die EditEngine muss ggf. von aussen geloescht werden
}

sal_uInt16 SvxEditEngineForwarder::GetParagraphCount() const
{
	return rEditEngine.GetParagraphCount();
}

sal_uInt16 SvxEditEngineForwarder::GetTextLen( sal_uInt16 nParagraph ) const
{
	return rEditEngine.GetTextLen( nParagraph );
}

String SvxEditEngineForwarder::GetText( const ESelection& rSel ) const
{
	String aRet = rEditEngine.GetText( rSel, LINEEND_LF );
	aRet.ConvertLineEnd();
	return aRet;
}

SfxItemSet SvxEditEngineForwarder::GetAttribs( const ESelection& rSel, sal_Bool bOnlyHardAttrib ) const
{
	if( rSel.nStartPara == rSel.nEndPara )
	{
		sal_uInt8 nFlags = 0;
		switch( bOnlyHardAttrib )
		{
		case EditEngineAttribs_All:
			nFlags = GETATTRIBS_ALL;
			break;
		case EditEngineAttribs_HardAndPara:
			nFlags = GETATTRIBS_PARAATTRIBS|GETATTRIBS_CHARATTRIBS;
			break;
		case EditEngineAttribs_OnlyHard:
			nFlags = GETATTRIBS_CHARATTRIBS;
			break;
		default:
			DBG_ERROR("unknown flags for SvxOutlinerForwarder::GetAttribs");
		}

		return rEditEngine.GetAttribs( rSel.nStartPara, rSel.nStartPos, rSel.nEndPos, nFlags );
	}
	else
	{
		return rEditEngine.GetAttribs( rSel, bOnlyHardAttrib );
	}
}

SfxItemSet SvxEditEngineForwarder::GetParaAttribs( sal_uInt16 nPara ) const
{
	SfxItemSet aSet( rEditEngine.GetParaAttribs( nPara ) );

	sal_uInt16 nWhich = EE_PARA_START;
	while( nWhich <= EE_PARA_END )
	{
		if( aSet.GetItemState( nWhich, sal_True ) != SFX_ITEM_ON )
		{
			if( rEditEngine.HasParaAttrib( nPara, nWhich ) )
				aSet.Put( rEditEngine.GetParaAttrib( nPara, nWhich ) );
		}
		nWhich++;
	}

	return aSet;
}

void SvxEditEngineForwarder::SetParaAttribs( sal_uInt16 nPara, const SfxItemSet& rSet )
{
	rEditEngine.SetParaAttribs( nPara, rSet );
}

void SvxEditEngineForwarder::RemoveAttribs( const ESelection& rSelection, sal_Bool bRemoveParaAttribs, sal_uInt16 nWhich )
{
    rEditEngine.RemoveAttribs( rSelection, bRemoveParaAttribs, nWhich );
}    

SfxItemPool* SvxEditEngineForwarder::GetPool() const
{
	return rEditEngine.GetEmptyItemSet().GetPool();
}

void SvxEditEngineForwarder::GetPortions( sal_uInt16 nPara, SvUShorts& rList ) const
{
	rEditEngine.GetPortions( nPara, rList );
}

void SvxEditEngineForwarder::QuickInsertText( const String& rText, const ESelection& rSel )
{
	rEditEngine.QuickInsertText( rText, rSel );
}

void SvxEditEngineForwarder::QuickInsertLineBreak( const ESelection& rSel )
{
	rEditEngine.QuickInsertLineBreak( rSel );
}

void SvxEditEngineForwarder::QuickInsertField( const SvxFieldItem& rFld, const ESelection& rSel )
{
	rEditEngine.QuickInsertField( rFld, rSel );
}

void SvxEditEngineForwarder::QuickSetAttribs( const SfxItemSet& rSet, const ESelection& rSel )
{
	rEditEngine.QuickSetAttribs( rSet, rSel );
}

sal_Bool SvxEditEngineForwarder::IsValid() const
{ 
    // cannot reliably query EditEngine state 
    // while in the middle of an update
    return rEditEngine.GetUpdateMode();
}

XubString SvxEditEngineForwarder::CalcFieldValue( const SvxFieldItem& rField, sal_uInt16 nPara, sal_uInt16 nPos, Color*& rpTxtColor, Color*& rpFldColor )
{
	return rEditEngine.CalcFieldValue( rField, nPara, nPos, rpTxtColor, rpFldColor );
}

void SvxEditEngineForwarder::FieldClicked( const SvxFieldItem& rField, sal_uInt16 nPara, xub_StrLen nPos )
{
    rEditEngine.FieldClicked( rField, nPara, nPos );
}

sal_uInt16 GetSvxEditEngineItemState( EditEngine& rEditEngine, const ESelection& rSel, sal_uInt16 nWhich )
{
	EECharAttribArray aAttribs;

	const SfxPoolItem*	pLastItem = NULL;

	SfxItemState eState = SFX_ITEM_DEFAULT;

	// check all paragraphs inside the selection
	for( sal_uInt16 nPara = rSel.nStartPara; nPara <= rSel.nEndPara; nPara++ )
	{
		SfxItemState eParaState = SFX_ITEM_DEFAULT;

		// calculate start and endpos for this paragraph
		sal_uInt16 nPos = 0;
		if( rSel.nStartPara == nPara )
			nPos = rSel.nStartPos;

		sal_uInt16 nEndPos = rSel.nEndPos;
		if( rSel.nEndPara != nPara )
			nEndPos = rEditEngine.GetTextLen( nPara );


		// get list of char attribs
		rEditEngine.GetCharAttribs( nPara, aAttribs );

		sal_Bool bEmpty = sal_True;		// we found no item inside the selektion of this paragraph
		sal_Bool bGaps  = sal_False;	// we found items but theire gaps between them
		sal_uInt16 nLastEnd = nPos;

		const SfxPoolItem* pParaItem = NULL;

		for( sal_uInt16 nAttrib = 0; nAttrib < aAttribs.Count(); nAttrib++ )
		{
			struct EECharAttrib aAttrib = aAttribs.GetObject( nAttrib );
			DBG_ASSERT( aAttrib.pAttr, "GetCharAttribs gives corrupt data" );

			const sal_Bool bEmptyPortion = aAttrib.nStart == aAttrib.nEnd;
			if( (!bEmptyPortion && (aAttrib.nStart >= nEndPos)) || (bEmptyPortion && (aAttrib.nStart > nEndPos)) )
				break;	// break if we are already behind our selektion

			if( (!bEmptyPortion && (aAttrib.nEnd <= nPos)) || (bEmptyPortion && (aAttrib.nEnd < nPos)) )
				continue;	// or if the attribute ends before our selektion

			if( aAttrib.pAttr->Which() != nWhich )
				continue; // skip if is not the searched item

			// if we already found an item
			if( pParaItem )
			{
				// ... and its different to this one than the state is dont care
				if( *pParaItem != *aAttrib.pAttr )
					return SFX_ITEM_DONTCARE;
			}
			else
			{
				pParaItem = aAttrib.pAttr;
			}

			if( bEmpty )
				bEmpty = sal_False;

			if( !bGaps && aAttrib.nStart > nLastEnd )
				bGaps = sal_True;

			nLastEnd = aAttrib.nEnd;
		}

		if( !bEmpty && !bGaps && nLastEnd < ( nEndPos - 1 ) )
			bGaps = sal_True;
/*
		// since we have no portion with our item or if there were gaps
		if( bEmpty || bGaps )
		{
			// we need to check the paragraph item
			const SfxItemSet& rParaSet = rEditEngine.GetParaAttribs( nPara );
			if( rParaSet.GetItemState( nWhich ) == SFX_ITEM_SET )
			{
				eState = SFX_ITEM_SET;
				// get item from the paragraph
				const SfxPoolItem* pTempItem = rParaSet.GetItem( nWhich );
				if( pParaItem )
				{
					if( *pParaItem != *pTempItem )
						return SFX_ITEM_DONTCARE;
				} 
				else
				{
					pParaItem = pTempItem;
				}

				// set if theres no last item or if its the same
				eParaState = SFX_ITEM_SET;
			}
			else if( bEmpty )
			{
				eParaState = SFX_ITEM_DEFAULT;
			}
			else if( bGaps )
			{
				// gaps and item not set in paragraph, thats a dont care
				return SFX_ITEM_DONTCARE;
			}
		}
		else
		{
			eParaState = SFX_ITEM_SET;
		}
*/
		if( bEmpty )
			eParaState = SFX_ITEM_DEFAULT;
		else if( bGaps )
			eParaState = SFX_ITEM_DONTCARE;
		else
			eParaState = SFX_ITEM_SET;

		// if we already found an item check if we found the same
		if( pLastItem )
		{
			if( (pParaItem == NULL) || (*pLastItem != *pParaItem) )
				return SFX_ITEM_DONTCARE;
		}
		else
		{
			pLastItem = pParaItem;
			eState = eParaState;
		}
	}

	return eState;
}

sal_uInt16 SvxEditEngineForwarder::GetItemState( const ESelection& rSel, sal_uInt16 nWhich ) const
{
	return GetSvxEditEngineItemState( rEditEngine, rSel, nWhich );
}

sal_uInt16 SvxEditEngineForwarder::GetItemState( sal_uInt16 nPara, sal_uInt16 nWhich ) const
{
	const SfxItemSet& rSet = rEditEngine.GetParaAttribs( nPara );
	return rSet.GetItemState( nWhich );
}

LanguageType SvxEditEngineForwarder::GetLanguage( sal_uInt16 nPara, sal_uInt16 nIndex ) const
{
    return rEditEngine.GetLanguage(nPara, nIndex);
}

sal_uInt16 SvxEditEngineForwarder::GetFieldCount( sal_uInt16 nPara ) const
{
    return rEditEngine.GetFieldCount(nPara); 
}

EFieldInfo SvxEditEngineForwarder::GetFieldInfo( sal_uInt16 nPara, sal_uInt16 nField ) const
{
    return rEditEngine.GetFieldInfo( nPara, nField );
}

EBulletInfo SvxEditEngineForwarder::GetBulletInfo( sal_uInt16 ) const
{
    return EBulletInfo();
}

Rectangle SvxEditEngineForwarder::GetCharBounds( sal_uInt16 nPara, sal_uInt16 nIndex ) const
{
    // #101701#
    // EditEngine's 'internal' methods like GetCharacterBounds()
    // don't rotate for vertical text.
    Size aSize( rEditEngine.CalcTextWidth(), rEditEngine.GetTextHeight() );
    ::std::swap( aSize.Width(), aSize.Height() );
    bool bIsVertical( rEditEngine.IsVertical() == sal_True );

    // #108900# Handle virtual position one-past-the end of the string
    if( nIndex >= rEditEngine.GetTextLen(nPara) )
    {
        Rectangle aLast;

        if( nIndex )
        {
            // use last character, if possible
            aLast = rEditEngine.GetCharacterBounds( EPosition(nPara, nIndex-1) );

            // move at end of this last character, make one pixel wide
            aLast.Move( aLast.Right() - aLast.Left(), 0 );
            aLast.SetSize( Size(1, aLast.GetHeight()) );

            // take care for CTL
            aLast = SvxEditSourceHelper::EEToUserSpace( aLast, aSize, bIsVertical );
        }
        else
        {
            // #109864# Bounds must lie within the paragraph
            aLast = GetParaBounds( nPara );

            // #109151# Don't use paragraph height, but line height
            // instead. aLast is already CTL-correct
            if( bIsVertical)
                aLast.SetSize( Size( rEditEngine.GetLineHeight(nPara,0), 1 ) );
            else
                aLast.SetSize( Size( 1, rEditEngine.GetLineHeight(nPara,0) ) );
        }

        return aLast;
    }
    else
    {
        return SvxEditSourceHelper::EEToUserSpace( rEditEngine.GetCharacterBounds( EPosition(nPara, nIndex) ),
                                                   aSize, bIsVertical );
    }
}

Rectangle SvxEditEngineForwarder::GetParaBounds( sal_uInt16 nPara ) const
{
    const Point aPnt = rEditEngine.GetDocPosTopLeft( nPara );
    sal_uLong nWidth; 
    sal_uLong nHeight;
    sal_uLong nTextWidth;

    if( rEditEngine.IsVertical() )
    {
        // #101701#
        // Hargl. EditEngine's 'external' methods return the rotated
        // dimensions, 'internal' methods like GetTextHeight( n )
        // don't rotate.
        nWidth = rEditEngine.GetTextHeight( nPara );
        nHeight = rEditEngine.GetTextHeight();
        nTextWidth = rEditEngine.GetTextHeight();

        return Rectangle( nTextWidth - aPnt.Y() - nWidth, 0, nTextWidth - aPnt.Y(), nHeight );
    }
    else
    {
        nWidth = rEditEngine.CalcTextWidth();        
        nHeight = rEditEngine.GetTextHeight( nPara );

        return Rectangle( 0, aPnt.Y(), nWidth, aPnt.Y() + nHeight );
    }
}

MapMode SvxEditEngineForwarder::GetMapMode() const
{
    return rEditEngine.GetRefMapMode();
}

OutputDevice* SvxEditEngineForwarder::GetRefDevice() const
{
    return rEditEngine.GetRefDevice();
}

sal_Bool SvxEditEngineForwarder::GetIndexAtPoint( const Point& rPos, sal_uInt16& nPara, sal_uInt16& nIndex ) const
{
    // #101701#
    Size aSize( rEditEngine.CalcTextWidth(), rEditEngine.GetTextHeight() );
    ::std::swap( aSize.Width(), aSize.Height() );
    Point aEEPos( SvxEditSourceHelper::UserSpaceToEE( rPos, 
                                                      aSize,
                                                      rEditEngine.IsVertical() == sal_True ));

    EPosition aDocPos = rEditEngine.FindDocPosition( aEEPos );

    nPara = aDocPos.nPara;
    nIndex = aDocPos.nIndex;

    return sal_True;
}

sal_Bool SvxEditEngineForwarder::GetWordIndices( sal_uInt16 nPara, sal_uInt16 nIndex, sal_uInt16& nStart, sal_uInt16& nEnd ) const
{
    ESelection aRes = rEditEngine.GetWord( ESelection(nPara, nIndex, nPara, nIndex), com::sun::star::i18n::WordType::DICTIONARY_WORD );

    if( aRes.nStartPara == nPara &&
        aRes.nStartPara == aRes.nEndPara )
    {
        nStart = aRes.nStartPos;
        nEnd = aRes.nEndPos;

        return sal_True;
    }

    return sal_False;
}

sal_Bool SvxEditEngineForwarder::GetAttributeRun( sal_uInt16& nStartIndex, sal_uInt16& nEndIndex, sal_uInt16 nPara, sal_uInt16 nIndex ) const
{
    return SvxEditSourceHelper::GetAttributeRun( nStartIndex, nEndIndex, rEditEngine, nPara, nIndex );
}

sal_uInt16 SvxEditEngineForwarder::GetLineCount( sal_uInt16 nPara ) const
{
    return rEditEngine.GetLineCount(nPara);
}

sal_uInt16 SvxEditEngineForwarder::GetLineLen( sal_uInt16 nPara, sal_uInt16 nLine ) const
{
    return rEditEngine.GetLineLen(nPara, nLine);
}
    
void SvxEditEngineForwarder::GetLineBoundaries( /*out*/sal_uInt16 &rStart, /*out*/sal_uInt16 &rEnd, sal_uInt16 nPara, sal_uInt16 nLine ) const
{
    rEditEngine.GetLineBoundaries(rStart, rEnd, nPara, nLine);
}
    
sal_uInt16 SvxEditEngineForwarder::GetLineNumberAtIndex( sal_uInt16 nPara, sal_uInt16 nIndex ) const
{
    return rEditEngine.GetLineNumberAtIndex(nPara, nIndex);
}
    

sal_Bool SvxEditEngineForwarder::QuickFormatDoc( sal_Bool )
{
    rEditEngine.QuickFormatDoc();

    return sal_True;
}

sal_Bool SvxEditEngineForwarder::Delete( const ESelection& rSelection )
{
    rEditEngine.QuickDelete( rSelection );
    rEditEngine.QuickFormatDoc();

    return sal_True;
}

sal_Bool SvxEditEngineForwarder::InsertText( const String& rStr, const ESelection& rSelection )
{
    rEditEngine.QuickInsertText( rStr, rSelection );
    rEditEngine.QuickFormatDoc();

    return sal_True;
}

sal_Int16 SvxEditEngineForwarder::GetDepth( sal_uInt16 ) const
{
    // EditEngine does not support outline depth
    return -1;
}

sal_Bool SvxEditEngineForwarder::SetDepth( sal_uInt16, sal_Int16 nNewDepth )
{
    // EditEngine does not support outline depth
    return nNewDepth == -1 ? sal_True : sal_False;
}

const SfxItemSet * SvxEditEngineForwarder::GetEmptyItemSetPtr()
{
    return &rEditEngine.GetEmptyItemSet();
}

void SvxEditEngineForwarder::AppendParagraph()
{
    rEditEngine.InsertParagraph( rEditEngine.GetParagraphCount(), String::EmptyString() );
}

xub_StrLen SvxEditEngineForwarder::AppendTextPortion( sal_uInt16 nPara, const String &rText, const SfxItemSet & /*rSet*/ )
{
    xub_StrLen nLen = 0;

    sal_uInt16 nParaCount = rEditEngine.GetParagraphCount();
    DBG_ASSERT( nPara < nParaCount, "paragraph index out of bounds" );
    if (/*0 <= nPara && */nPara < nParaCount)
    {
        nLen = rEditEngine.GetTextLen( nPara );
        rEditEngine.QuickInsertText( rText, ESelection( nPara, nLen, nPara, nLen ) );
    }

    return nLen;
}

void SvxEditEngineForwarder::CopyText(const SvxTextForwarder& rSource)
{
    const SvxEditEngineForwarder* pSourceForwarder = dynamic_cast< const SvxEditEngineForwarder* >( &rSource );
    if( !pSourceForwarder )
        return;
    EditTextObject* pNewTextObject = pSourceForwarder->rEditEngine.CreateTextObject();
    rEditEngine.SetText( *pNewTextObject );
    delete pNewTextObject;
}    

//------------------------------------------------------------------------