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// Scintilla source code edit control
/** @file ContractionState.h
** Manages visibility of lines for folding and wrapping.
**/
// Copyright 1998-2007 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#ifndef CONTRACTIONSTATE_H
#define CONTRACTIONSTATE_H
#ifdef SCI_NAMESPACE
namespace Scintilla {
#endif
template<class T>
class SparseVector;
/**
*/
class ContractionState {
// These contain 1 element for every document line.
RunStyles *visible;
RunStyles *expanded;
RunStyles *heights;
SparseVector<const char *> *foldDisplayTexts;
Partitioning *displayLines;
int linesInDocument;
void EnsureData();
bool OneToOne() const {
// True when each document line is exactly one display line so need for
// complex data structures.
return visible == 0;
}
public:
ContractionState();
virtual ~ContractionState();
void Clear();
int LinesInDoc() const;
int LinesDisplayed() const;
int DisplayFromDoc(int lineDoc) const;
int DisplayLastFromDoc(int lineDoc) const;
int DocFromDisplay(int lineDisplay) const;
void InsertLine(int lineDoc);
void InsertLines(int lineDoc, int lineCount);
void DeleteLine(int lineDoc);
void DeleteLines(int lineDoc, int lineCount);
bool GetVisible(int lineDoc) const;
bool SetVisible(int lineDocStart, int lineDocEnd, bool isVisible);
bool HiddenLines() const;
const char *GetFoldDisplayText(int lineDoc) const;
bool SetFoldDisplayText(int lineDoc, const char *text);
bool GetExpanded(int lineDoc) const;
bool SetExpanded(int lineDoc, bool isExpanded);
bool GetFoldDisplayTextShown(int lineDoc) const;
int ContractedNext(int lineDocStart) const;
int GetHeight(int lineDoc) const;
bool SetHeight(int lineDoc, int height);
void ShowAll();
void Check() const;
};
#ifdef SCI_NAMESPACE
}
#endif
#endif
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