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 * 
 * 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
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#ifndef _TXTATTR_HXX
#define _TXTATTR_HXX

#include "svtools/svtdllapi.h"
#include <tools/color.hxx>
#include <vcl/vclenum.hxx>
#include <tools/string.hxx>
#include <tools/debug.hxx>

class Font;

#define TEXTATTR_INVALID	0
#define TEXTATTR_FONTCOLOR	1
#define TEXTATTR_HYPERLINK	2
#define TEXTATTR_FONTWEIGHT	3

#define TEXTATTR_USER_START 1000 //start id for user defined text attributes
#define TEXTATTR_PROTECTED  4


class SVT_DLLPUBLIC TextAttrib
{
private:
	sal_uInt16					mnWhich;

protected:
							TextAttrib( sal_uInt16 nWhich ) { mnWhich = nWhich; }
							TextAttrib( const TextAttrib& rAttr ) { mnWhich = rAttr.mnWhich; }

public:

	virtual					~TextAttrib();

	sal_uInt16					Which() const 	{ return mnWhich; }

	virtual void 			SetFont( Font& rFont ) const = 0;
	virtual TextAttrib*		Clone() const = 0;
	virtual int				operator==( const TextAttrib& rAttr ) const = 0;
	int						operator!=( const TextAttrib& rAttr ) const
								{ return !(*this == rAttr ); }
};



class SVT_DLLPUBLIC TextAttribFontColor : public TextAttrib
{
private:
	Color	maColor;

public:
							TextAttribFontColor( const Color& rColor );
							TextAttribFontColor( const TextAttribFontColor& rAttr );
							~TextAttribFontColor();
							
    const Color&            GetColor() const { return maColor; }
							
	virtual void 			SetFont( Font& rFont ) const;
	virtual TextAttrib*		Clone() const;
	virtual int				operator==( const TextAttrib& rAttr ) const;

};

class SVT_DLLPUBLIC TextAttribFontWeight : public TextAttrib
{
private:
	FontWeight	meWeight;

public:
							TextAttribFontWeight( FontWeight eWeight );
							TextAttribFontWeight( const TextAttribFontWeight& rAttr );
							~TextAttribFontWeight();

	virtual void 			SetFont( Font& rFont ) const;
	virtual TextAttrib*		Clone() const;
	virtual int				operator==( const TextAttrib& rAttr ) const;

    inline FontWeight getFontWeight() const { return meWeight; }
};


class TextAttribHyperLink : public TextAttrib
{
private:
	XubString	maURL;
	XubString	maDescription;
	Color		maColor;

public:
							TextAttribHyperLink( const XubString& rURL );
							TextAttribHyperLink( const XubString& rURL, const XubString& rDescription );
							TextAttribHyperLink( const TextAttribHyperLink& rAttr );
							~TextAttribHyperLink();

	void					SetURL( const XubString& rURL )				{ maURL = rURL; }
	const XubString&			GetURL() const 								{ return maURL; }

	void					SetDescription( const XubString& rDescr )	{ maDescription = rDescr; }
	const XubString&			GetDescription() const						{ return maDescription; }

	void					SetColor( const Color& rColor ) 			{ maColor = rColor; }
	const Color&			GetColor() const 							{ return maColor; }

	virtual void 			SetFont( Font& rFont ) const;
	virtual TextAttrib*		Clone() const;
	virtual int				operator==( const TextAttrib& rAttr ) const;
};

class SVT_DLLPUBLIC TextAttribProtect : public TextAttrib
{
public:
                            TextAttribProtect();
                            TextAttribProtect( const TextAttribProtect& rAttr );
                            ~TextAttribProtect();
                            
    virtual void            SetFont( Font& rFont ) const;
    virtual TextAttrib*     Clone() const;
    virtual int             operator==( const TextAttrib& rAttr ) const;

};


class TextCharAttrib
{
private:
	TextAttrib*		mpAttr;
	sal_uInt16 			mnStart;
	sal_uInt16 			mnEnd;

protected:

public:

					TextCharAttrib( const TextAttrib& rAttr, sal_uInt16 nStart, sal_uInt16 nEnd );
					TextCharAttrib( const TextCharAttrib& rTextCharAttrib );
					~TextCharAttrib();

	const TextAttrib&	GetAttr() const 		{ return *mpAttr; }

	sal_uInt16			Which() const 				{ return mpAttr->Which(); }

	sal_uInt16			GetStart() const			{ return mnStart; }
	sal_uInt16&			GetStart()					{ return mnStart; }

	sal_uInt16			GetEnd() const				{ return mnEnd; }
	sal_uInt16&			GetEnd()					{ return mnEnd; }

	inline sal_uInt16	GetLen() const;

	inline void		MoveForward( sal_uInt16 nDiff );
	inline void		MoveBackward( sal_uInt16 nDiff );

	inline void		Expand( sal_uInt16 nDiff );
	inline void		Collaps( sal_uInt16 nDiff );

	inline sal_Bool		IsIn( sal_uInt16 nIndex );
	inline sal_Bool		IsInside( sal_uInt16 nIndex );
	inline sal_Bool		IsEmpty();

};

inline sal_uInt16 TextCharAttrib::GetLen() const
{
	DBG_ASSERT( mnEnd >= mnStart, "TextCharAttrib: nEnd < nStart!" );
	return mnEnd-mnStart;
}

inline void TextCharAttrib::MoveForward( sal_uInt16 nDiff )
{
	DBG_ASSERT( ((long)mnEnd + nDiff) <= 0xFFFF, "TextCharAttrib: MoveForward?!" );
	mnStart = mnStart + nDiff;
	mnEnd = mnEnd + nDiff;
}

inline void TextCharAttrib::MoveBackward( sal_uInt16 nDiff )
{
	DBG_ASSERT( ((long)mnStart - nDiff) >= 0, "TextCharAttrib: MoveBackward?!" );
	mnStart = mnStart - nDiff;
	mnEnd = mnEnd - nDiff;
}

inline void	TextCharAttrib::Expand( sal_uInt16 nDiff )
{
	DBG_ASSERT( ( ((long)mnEnd + nDiff) <= (long)0xFFFF ), "TextCharAttrib: Expand?!" );
	mnEnd = mnEnd + nDiff;
}

inline void	TextCharAttrib::Collaps( sal_uInt16 nDiff )
{
	DBG_ASSERT( (long)mnEnd - nDiff >= (long)mnStart, "TextCharAttrib: Collaps?!" );
	mnEnd = mnEnd - nDiff;
}

inline sal_Bool TextCharAttrib::IsIn( sal_uInt16 nIndex )
{
	return ( ( mnStart <= nIndex ) && ( mnEnd >= nIndex ) );
}

inline sal_Bool TextCharAttrib::IsInside( sal_uInt16 nIndex )
{
	return ( ( mnStart < nIndex ) && ( mnEnd > nIndex ) );
}

inline sal_Bool TextCharAttrib::IsEmpty()
{
	return mnStart == mnEnd;
}

#endif // _TXTATTR_HXX