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/**
* Yudit Unicode Editor Source File
*
* GNU Copyright (C) 1997-2023 Gaspar Sinai <gaspar@yudit.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* dated June 1991. See file COPYYING for details.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef STextData_h
#define STextData_h
#include "stoolkit/SVector.h"
#include "stoolkit/STypes.h"
#include "stoolkit/SString.h"
#include "stoolkit/STextIndex.h"
#include "stoolkit/SCharClass.h"
#include "swindow/SColor.h"
#include "stoolkit/SGlyph.h"
#include "stoolkit/SParagraph.h"
#include "stoolkit/SLineTracker.h"
class STextDataEvent
{
public:
/* line per line events */
STextDataEvent (void);
STextDataEvent (const STextIndex& start, bool attribute=false);
~STextDataEvent ();
void clear();
void add (const STextDataEvent& evt);
void setRemaining (const STextIndex& remain);
bool valid;
bool attribute; // only attribute of text has changed.
STextIndex start;
/* a reversely calculated value */
STextIndex remaining;
};
class STextDataListener
{
public:
virtual void textChanged(void* src, const STextDataEvent& event) = 0;
virtual ~STextDataListener() {}
};
/**
* This STextData has a notion about glyphs and compositions.
*/
class STextData
{
public:
STextData (void);
STextData (const SString& utf8);
STextData operator = (const STextData & data);
virtual ~STextData ();
SString getText () const;
SString getText (const STextIndex& index) const;
SString getText (const STextIndex& begin, const STextIndex& end) const;
SV_UCS4 getChars (unsigned int line) const
{ return lines[line]->getChars (); }
STextIndex find (const SString& string);
const SGlyph& glyphAt (const STextIndex& index) const;
// we need only this
const SGlyph* peekGlyphAt (const STextIndex& index) const;
/* these, till fireEvent all work with events */
void move (const STextIndex& index);
/* moves the cursor to the end */
void setText (const SString& utf8);
void insert (const SString& data);
/* remove moves the cursor */
void remove (const STextIndex& index);
/* add a composing character */
bool addComposing(SS_UCS4 c, bool toleft);
/* remove a composing character */
SS_UCS4 removeComposing(bool toleft);
/* These just change the text */
void select (const STextIndex& index, bool is=true);
void underline (const STextIndex& index, bool is=true);
bool setParagraphSeparator (const SString& str);
bool isLR (unsigned int parag) const;
bool isLR (const STextIndex& index) const;
SEmbedState getEmbedState (const STextIndex& index) const;
void clear ();
void fireEvent ();
void clearEvent ();
unsigned int size() const;
unsigned int size(unsigned int line) const;
// For syntax, It will not expand line
unsigned int softSize (unsigned int line) const;
SS_UCS4 softCharAt (unsigned int line, unsigned int pos) const;
STextIndex getTextIndex (int charOffset=0, bool logical=false) const;
STextIndex getTextIndex(const STextIndex& base, int charOffset=0, bool logical=false) const;
STextIndex getMaxTextIndex(const STextDataEvent& evt) const;
STextIndex getMinTextIndex(const STextDataEvent& evt) const;
unsigned int toLogical (unsigned int line, unsigned int index);
SV_UINT getLogicalMap(unsigned int line) const;
// Set only
void addTextDataListener (STextDataListener* listener);
// Set only - lineExpanded is never called, it mmust be handled separately
void addLineTracker (SLineTracker* lt);
bool isProperLine (unsigned int line) const;
bool isVisible(unsigned int line) const;
void setVisible(unsigned int line);
bool isReordered (unsigned int line) const;
void setReordered(unsigned int line);
void setDocumentEmbedding(SS_Embedding e);
SS_Embedding getDocumentEmbedding() const;
bool isWhiteSpace (const STextIndex& index) const;
bool isDelimiter (const STextIndex& index) const;
bool canWrap (const STextIndex& index) const;
bool isNumber (const STextIndex& index) const;
bool isLetter (const STextIndex& index) const;
bool isTransparent (const STextIndex& index) const;
void setLineBreaks (unsigned int line, const SV_UCS4& breaks);
bool getInitialLR() const;
void setInitialLR(bool lr);
const STextDataEvent& getCurrentEvent () const { return event; }
bool isExpanded (unsigned int line) const
{ return lines[line]->isExpanded(); }
SS_ParaSep getParagraphSeparator (unsigned int line) const
{ return lines[line]->getParagraphSeparator (); }
private:
SS_Embedding embedding;
/* insert moves the cursor */
unsigned int properSize(unsigned int line) const;
void insert (const SGlyph& glyph);
bool setParagraphSeparator (SS_ParaSep ps);
void reShape (const STextIndex& index);
void reShapeOne (const STextIndex& index);
/* moves the cursor to the end */
void setText (const SV_UCS4& ucs4);
void setMaxLimits (STextDataEvent* evt, const STextIndex& index);
STextIndex reorder (const STextIndex& index);
/* These belong to the event being generated */
STextDataEvent event;
STextIndex textIndex;
/* should be a linked list */
SBinVector<SParagraph*> lines;
STextDataListener* listener;
SLineTracker* lineTracker;
};
#endif /* STextData_h */
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