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/* This file is part of the KDE libraries
Copyright (C) 2002 Joseph Wenninger <jowenn@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef _KATE_CODEFOLDING_HELPERS_
#define _KATE_CODEFOLDING_HELPERS_
//BEGIN INCLUDES + FORWARDS
#include <qptrlist.h>
#include <qvaluelist.h>
#include <qobject.h>
#include <qintdict.h>
#include <qmemarray.h>
class KateCodeFoldingTree;
class KateTextCursor;
class KateBuffer;
class QString;
//END
class KateHiddenLineBlock
{
public:
unsigned int start;
unsigned int length;
};
class KateLineInfo
{
public:
bool topLevel;
bool startsVisibleBlock;
bool startsInVisibleBlock;
bool endsBlock;
bool invalidBlockEnd;
};
class KateCodeFoldingNode
{
friend class KateCodeFoldingTree;
public:
KateCodeFoldingNode ();
KateCodeFoldingNode (KateCodeFoldingNode *par, signed char typ, unsigned int sLRel);
~KateCodeFoldingNode ();
inline int nodeType () { return type;}
inline bool isVisible () {return visible;}
inline KateCodeFoldingNode *getParentNode () {return parentNode;}
bool getBegin (KateCodeFoldingTree *tree, KateTextCursor* begin);
bool getEnd (KateCodeFoldingTree *tree, KateTextCursor *end);
/**
* accessors for the child nodes
*/
protected:
inline bool noChildren () const { return m_children.isEmpty(); }
inline uint childCount () const { return m_children.size(); }
inline KateCodeFoldingNode *child (uint index) const { return m_children[index]; }
inline int findChild (KateCodeFoldingNode *node, uint start = 0) const { return m_children.find (node, start); }
inline void appendChild (KateCodeFoldingNode *node) { m_children.resize(m_children.size()+1); m_children[m_children.size()-1] = node; }
void insertChild (uint index, KateCodeFoldingNode *node);
KateCodeFoldingNode *takeChild (uint index);
void clearChildren ();
int cmpPos(KateCodeFoldingTree *tree, uint line, uint col);
/**
* data members
*/
private:
KateCodeFoldingNode *parentNode;
unsigned int startLineRel;
unsigned int endLineRel;
unsigned int startCol;
unsigned int endCol;
bool startLineValid;
bool endLineValid;
signed char type; // 0 -> toplevel / invalid
bool visible;
bool deleteOpening;
bool deleteEnding;
QMemArray<KateCodeFoldingNode*> m_children;
};
class KateCodeFoldingTree : public QObject
{
friend class KateCodeFoldingNode;
Q_OBJECT
public:
KateCodeFoldingTree (KateBuffer *buffer);
~KateCodeFoldingTree ();
KateCodeFoldingNode *findNodeForLine (unsigned int line);
unsigned int getRealLine (unsigned int virtualLine);
unsigned int getVirtualLine (unsigned int realLine);
unsigned int getHiddenLinesCount (unsigned int docLine);
bool isTopLevel (unsigned int line);
void lineHasBeenInserted (unsigned int line);
void lineHasBeenRemoved (unsigned int line);
void debugDump ();
void getLineInfo (KateLineInfo *info,unsigned int line);
unsigned int getStartLine (KateCodeFoldingNode *node);
void fixRoot (int endLRel);
void clear ();
KateCodeFoldingNode *findNodeForPosition(unsigned int line, unsigned int column);
private:
KateCodeFoldingNode m_root;
KateBuffer *m_buffer;
QIntDict<unsigned int> lineMapping;
QIntDict<bool> dontIgnoreUnchangedLines;
QPtrList<KateCodeFoldingNode> markedForDeleting;
QPtrList<KateCodeFoldingNode> nodesForLine;
QValueList<KateHiddenLineBlock> hiddenLines;
unsigned int hiddenLinesCountCache;
bool something_changed;
bool hiddenLinesCountCacheValid;
static bool trueVal;
KateCodeFoldingNode *findNodeForLineDescending (KateCodeFoldingNode *, unsigned int, unsigned int, bool oneStepOnly=false);
bool correctEndings (signed char data, KateCodeFoldingNode *node, unsigned int line, unsigned int endCol, int insertPos);
void dumpNode (KateCodeFoldingNode *node, const QString &prefix);
void addOpening (KateCodeFoldingNode *node, signed char nType,QMemArray<uint>* list, unsigned int line,unsigned int charPos);
void addOpening_further_iterations (KateCodeFoldingNode *node,signed char nType, QMemArray<uint>*
list,unsigned int line,int current,unsigned int startLine,unsigned int charPos);
void incrementBy1 (KateCodeFoldingNode *node, KateCodeFoldingNode *after);
void decrementBy1 (KateCodeFoldingNode *node, KateCodeFoldingNode *after);
void cleanupUnneededNodes (unsigned int line);
/**
* if returns true, this node has been deleted !!
*/
bool removeEnding (KateCodeFoldingNode *node,unsigned int line);
/**
* if returns true, this node has been deleted !!
*/
bool removeOpening (KateCodeFoldingNode *node,unsigned int line);
void findAndMarkAllNodesforRemovalOpenedOrClosedAt (unsigned int line);
void findAllNodesOpenedOrClosedAt (unsigned int line);
void addNodeToFoundList (KateCodeFoldingNode *node,unsigned int line,int childpos);
void addNodeToRemoveList (KateCodeFoldingNode *node,unsigned int line);
void addHiddenLineBlock (KateCodeFoldingNode *node,unsigned int line);
bool existsOpeningAtLineAfter(unsigned int line, KateCodeFoldingNode *node);
void dontDeleteEnding (KateCodeFoldingNode*);
void dontDeleteOpening (KateCodeFoldingNode*);
void updateHiddenSubNodes (KateCodeFoldingNode *node);
void moveSubNodesUp (KateCodeFoldingNode *node);
public slots:
void updateLine (unsigned int line,QMemArray<uint>* regionChanges, bool *updated, bool changed,bool colschanged);
void toggleRegionVisibility (unsigned int);
void collapseToplevelNodes ();
void expandToplevelNodes (int numLines);
int collapseOne (int realLine);
void expandOne (int realLine, int numLines);
/**
Ensures that all nodes surrounding @p line are open
*/
void ensureVisible( uint line );
signals:
void regionVisibilityChangedAt (unsigned int);
void regionBeginEndAddedRemoved (unsigned int);
};
#endif
// kate: space-indent on; indent-width 2; replace-tabs on;
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