text: // 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
  
  namespace Scintilla {
  
  /**
  */
  class IContractionState {
  public:
  	virtual ~IContractionState() {};
  
  	virtual void Clear()=0;
  
  	virtual Sci::Line LinesInDoc() const=0;
  	virtual Sci::Line LinesDisplayed() const=0;
  	virtual Sci::Line DisplayFromDoc(Sci::Line lineDoc) const=0;
  	virtual Sci::Line DisplayLastFromDoc(Sci::Line lineDoc) const=0;
  	virtual Sci::Line DocFromDisplay(Sci::Line lineDisplay) const=0;
  
  	virtual void InsertLines(Sci::Line lineDoc, Sci::Line lineCount)=0;
  	virtual void DeleteLines(Sci::Line lineDoc, Sci::Line lineCount)=0;
  
  	virtual bool GetVisible(Sci::Line lineDoc) const=0;
  	virtual bool SetVisible(Sci::Line lineDocStart, Sci::Line lineDocEnd, bool isVisible)=0;
  	virtual bool HiddenLines() const=0;
  
  	virtual const char *GetFoldDisplayText(Sci::Line lineDoc) const=0;
  	virtual bool SetFoldDisplayText(Sci::Line lineDoc, const char *text)=0;
  
  	virtual bool GetExpanded(Sci::Line lineDoc) const=0;
  	virtual bool SetExpanded(Sci::Line lineDoc, bool isExpanded)=0;
  	virtual Sci::Line ContractedNext(Sci::Line lineDocStart) const=0;
  
  	virtual int GetHeight(Sci::Line lineDoc) const=0;
  	virtual bool SetHeight(Sci::Line lineDoc, int height)=0;
  
  	virtual void ShowAll()=0;
  };
  
  std::unique_ptr<IContractionState> ContractionStateCreate(bool largeDocument);
  
  }
  
  #endif
  