ext/scintilla/src/ContractionState.h

   1 // Scintilla source code edit control
   2 /** @file ContractionState.h
   3  ** Manages visibility of lines for folding and wrapping.
   4  **/
   5 // Copyright 1998-2007 by Neil Hodgson <neilh@scintilla.org>
   6 // The License.txt file describes the conditions under which this software may be distributed.
   7
   8 #ifndef CONTRACTIONSTATE_H
   9 #define CONTRACTIONSTATE_H
  10
  11 namespace Scintilla::Internal {
  12
  13 /**
  14 */
  15 class IContractionState {
  16 public:
  17         virtual ~IContractionState() {};
  18
  19         virtual void Clear()=0;
  20
  21         virtual Sci::Line LinesInDoc() const noexcept=0;
  22         virtual Sci::Line LinesDisplayed() const noexcept=0;
  23         virtual Sci::Line DisplayFromDoc(Sci::Line lineDoc) const noexcept=0;
  24         virtual Sci::Line DisplayLastFromDoc(Sci::Line lineDoc) const noexcept=0;
  25         virtual Sci::Line DocFromDisplay(Sci::Line lineDisplay) const noexcept=0;
  26
  27         virtual void InsertLines(Sci::Line lineDoc, Sci::Line lineCount)=0;
  28         virtual void DeleteLines(Sci::Line lineDoc, Sci::Line lineCount)=0;
  29
  30         virtual bool GetVisible(Sci::Line lineDoc) const noexcept=0;
  31         virtual bool SetVisible(Sci::Line lineDocStart, Sci::Line lineDocEnd, bool isVisible)=0;
  32         virtual bool HiddenLines() const noexcept=0;
  33
  34         virtual const char *GetFoldDisplayText(Sci::Line lineDoc) const noexcept=0;
  35         virtual bool SetFoldDisplayText(Sci::Line lineDoc, const char *text)=0;
  36
  37         virtual bool GetExpanded(Sci::Line lineDoc) const noexcept=0;
  38         virtual bool SetExpanded(Sci::Line lineDoc, bool isExpanded)=0;
  39         virtual bool ExpandAll()=0;
  40         virtual Sci::Line ContractedNext(Sci::Line lineDocStart) const noexcept =0;
  41
  42         virtual int GetHeight(Sci::Line lineDoc) const noexcept=0;
  43         virtual bool SetHeight(Sci::Line lineDoc, int height)=0;
  44
  45         virtual void ShowAll() noexcept=0;
  46 };
  47
  48 std::unique_ptr<IContractionState> ContractionStateCreate(bool largeDocument);
  49
  50 }
  51
  52 #endif