pp_Property.h

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/* -*- mode: C++; tab-width: 4; c-basic-offset: 4; -*- */

/* AbiWord
 * Copyright (C) 1998-2000 AbiSource, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */



#ifndef PP_PROPERTY_H
#define PP_PROPERTY_H

// make sure we don't get caught in a BASEDON loop
#define pp_BASEDON_DEPTH_LIMIT  10

#include "ut_types.h"
#include "ut_misc.h"
#include "ut_units.h"

#include "pp_PropertyMap.h"

class PP_AttrProp;
class PD_Document;

// PP_Property captures knowledge of the various CSS properties,
// such as their initial/default values and whether they are
// inherited.

typedef enum {
    Property_type_bool,
    Property_type_int,
    Property_type_size,
    Property_type_color
    } tProperty_type;


class ABI_EXPORT PP_PropertyType
{
public:
    PP_PropertyType() {};
    virtual ~PP_PropertyType() {};

public:
    virtual tProperty_type getType() const = 0;

    static PP_PropertyType *createPropertyType(tProperty_type Type, const gchar *p_init);
};

class ABI_EXPORT PP_PropertyTypeBool : public PP_PropertyType
{

public:
    PP_PropertyTypeBool(const gchar *p_init);

    tProperty_type getType() const {return Property_type_bool;}

    bool getState() const {return State;}


private:

    bool State;
};

class ABI_EXPORT PP_PropertyTypeInt : public PP_PropertyType
{

public:
    PP_PropertyTypeInt(const gchar *p_init);

    tProperty_type getType() const {return Property_type_int;}

    int getValue() const {return Value;}


private:

    int Value;
};

class ABI_EXPORT PP_PropertyTypeSize : public PP_PropertyType
{

public:
    PP_PropertyTypeSize(const gchar *p_init);

    tProperty_type getType() const {return Property_type_size;}

    double getValue() const {return Value;}
    UT_Dimension getDim() const {return Dim;}


private:

    double Value;
    UT_Dimension Dim;
};

class ABI_EXPORT PP_PropertyTypeColor : public PP_PropertyType
{

public:
    PP_PropertyTypeColor(const gchar *p_init);

    tProperty_type getType() const {return Property_type_color;}

    const UT_RGBColor &getColor() const {return Color;}


private:

    UT_RGBColor Color;
};



typedef unsigned int tPropLevel;

// the m_iLevel member of PP_Property should be set by or-ing the
// following constants
#define PP_LEVEL_CHAR  0x00000001
#define PP_LEVEL_BLOCK 0x00000002
#define PP_LEVEL_SECT  0x00000004
#define PP_LEVEL_DOC   0x00000008
#define PP_LEVEL_TABLE 0x00000010
#define PP_LEVEL_OBJ   0x00000020
#define PP_LEVEL_IMG   0x00000040
#define PP_LEVEL_FIELD 0x00000080
#define PP_LEVEL_FRAME 0x00000100

class ABI_EXPORT PP_Property
{
public:
    const gchar *           m_pszName;
    const gchar *           m_pszInitial;
    bool                m_bInherit;
    PP_PropertyType *   m_pProperty;
    tPropLevel          m_iLevel;
    ~PP_Property();

    inline const gchar *    getName() const {return m_pszName;}
    inline const gchar *    getInitial() const {return m_pszInitial;}
    const PP_PropertyType * getInitialType (tProperty_type Type) const;
    inline bool             canInherit() const {return m_bInherit;}
    inline tPropLevel       getLevel() const {return m_iLevel;}
};

ABI_EXPORT const PP_Property * PP_lookupProperty(const gchar * pszName);

ABI_EXPORT void PP_resetInitialBiDiValues(const gchar * pszValue);

ABI_EXPORT void PP_setDefaultFontFamily(const char* pszFamily);

ABI_EXPORT const gchar * PP_evalProperty(const gchar * pszName,
                                 const PP_AttrProp * pSpanAttrProp,
                                 const PP_AttrProp * pBlockAttrProp,
                                 const PP_AttrProp * pSectionAttrProp,
                                 const PD_Document * pDoc,
                                 bool bExpandStyles=false);


ABI_EXPORT const PP_PropertyType * PP_evalPropertyType(const gchar * pszName,
                                 const PP_AttrProp * pSpanAttrProp,
                                 const PP_AttrProp * pBlockAttrProp,
                                 const PP_AttrProp * pSectionAttrProp,
                                 tProperty_type Type,
                                 const PD_Document * pDoc=NULL,
                                 bool bExpandStyles=false);

ABI_EXPORT UT_uint32        PP_getPropertyCount();
ABI_EXPORT const gchar * PP_getNthPropertyName(UT_uint32 n);
ABI_EXPORT tPropLevel       PP_getNthPropertyLevel(UT_uint32 n);
#endif /* PP_PROPERTY_H */