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/****************************************************************************
**
** Definition of TQGList and TQGListIterator classes
**
** Created : 920624
**
** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA.
**
** This file is part of the tools module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file. Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#ifndef TQGLIST_H
#define TQGLIST_H
#ifndef TQT_H
#include "tqptrcollection.h"
#endif // TQT_H
class TQ_EXPORT TQLNode
{
friend class TQGList;
friend class TQGListIterator;
friend class TQGListStdIterator;
public:
TQPtrCollection::Item getData() { return data; }
private:
TQPtrCollection::Item data;
TQLNode *prev;
TQLNode *next;
TQLNode( TQPtrCollection::Item d ) { data = d; }
};
class TQGListIteratorList; // internal helper class
class TQ_EXPORT TQGList : public TQPtrCollection // doubly linked generic list
{
friend class TQGListIterator;
friend class TQGListIteratorList;
friend class TQGVector; // needed by TQGVector::toList
public:
uint count() const; // return number of nodes
#ifndef TQT_NO_DATASTREAM
TQDataStream &read( TQDataStream & ); // read list from stream
TQDataStream &write( TQDataStream & ) const; // write list to stream
#endif
protected:
TQGList(); // create empty list
TQGList( const TQGList & ); // make copy of other list
virtual ~TQGList();
TQGList &operator=( const TQGList & ); // assign from other list
bool operator==( const TQGList& ) const;
void inSort( TQPtrCollection::Item ); // add item sorted in list
void append( TQPtrCollection::Item ); // add item at end of list
bool insertAt( uint index, TQPtrCollection::Item ); // add item at i'th position
void relinkNode( TQLNode * ); // relink as first item
bool removeNode( TQLNode * ); // remove node
bool remove( TQPtrCollection::Item = 0 ); // remove item (0=current)
bool removeRef( TQPtrCollection::Item = 0 ); // remove item (0=current)
bool removeFirst(); // remove first item
bool removeLast(); // remove last item
bool removeAt( uint ); // remove item at i'th position
bool replaceAt( uint, TQPtrCollection::Item ); // replace item at position i with item
TQPtrCollection::Item takeNode( TQLNode * ); // take out node
TQPtrCollection::Item take(); // take out current item
TQPtrCollection::Item takeAt( uint index ); // take out item at i'th pos
TQPtrCollection::Item takeFirst(); // take out first item
TQPtrCollection::Item takeLast(); // take out last item
void sort(); // sort all items;
void clear(); // remove all items
int findRef( TQPtrCollection::Item, bool = TRUE ); // find exact item in list
int find( TQPtrCollection::Item, bool = TRUE ); // find equal item in list
uint containsRef( TQPtrCollection::Item ) const; // get number of exact matches
uint contains( TQPtrCollection::Item ) const; // get number of equal matches
TQPtrCollection::Item at( uint index ); // access item at i'th pos
int at() const; // get current index
TQLNode *currentNode() const; // get current node
TQPtrCollection::Item get() const; // get current item
TQPtrCollection::Item cfirst() const; // get ptr to first list item
TQPtrCollection::Item clast() const; // get ptr to last list item
TQPtrCollection::Item first(); // set first item in list curr
TQPtrCollection::Item last(); // set last item in list curr
TQPtrCollection::Item next(); // set next item in list curr
TQPtrCollection::Item prev(); // set prev item in list curr
void toVector( TQGVector * ) const; // put items in vector
virtual int compareItems( TQPtrCollection::Item, TQPtrCollection::Item );
#ifndef TQT_NO_DATASTREAM
virtual TQDataStream &read( TQDataStream &, TQPtrCollection::Item & );
virtual TQDataStream &write( TQDataStream &, TQPtrCollection::Item ) const;
#endif
TQLNode* begin() const { return firstNode; }
TQLNode* end() const { return 0; }
TQLNode* erase( TQLNode* it );
private:
void prepend( TQPtrCollection::Item ); // add item at start of list
void heapSortPushDown( TQPtrCollection::Item* heap, int first, int last );
TQLNode *firstNode; // first node
TQLNode *lastNode; // last node
TQLNode *curNode; // current node
int curIndex; // current index
uint numNodes; // number of nodes
TQGListIteratorList *iterators; // list of iterators
TQLNode *locate( uint ); // get node at i'th pos
TQLNode *unlink(); // unlink node
};
inline uint TQGList::count() const
{
return numNodes;
}
inline bool TQGList::removeFirst()
{
first();
return remove();
}
inline bool TQGList::removeLast()
{
last();
return remove();
}
inline int TQGList::at() const
{
return curIndex;
}
inline TQPtrCollection::Item TQGList::at( uint index )
{
TQLNode *n = locate( index );
return n ? n->data : 0;
}
inline TQLNode *TQGList::currentNode() const
{
return curNode;
}
inline TQPtrCollection::Item TQGList::get() const
{
return curNode ? curNode->data : 0;
}
inline TQPtrCollection::Item TQGList::cfirst() const
{
return firstNode ? firstNode->data : 0;
}
inline TQPtrCollection::Item TQGList::clast() const
{
return lastNode ? lastNode->data : 0;
}
/*****************************************************************************
TQGList stream functions
*****************************************************************************/
#ifndef TQT_NO_DATASTREAM
TQ_EXPORT TQDataStream &operator>>( TQDataStream &, TQGList & );
TQ_EXPORT TQDataStream &operator<<( TQDataStream &, const TQGList & );
#endif
/*****************************************************************************
TQGListIterator class
*****************************************************************************/
class TQ_EXPORT TQGListIterator // TQGList iterator
{
friend class TQGList;
friend class TQGListIteratorList;
protected:
TQGListIterator( const TQGList & );
TQGListIterator( const TQGListIterator & );
TQGListIterator &operator=( const TQGListIterator & );
~TQGListIterator();
bool atFirst() const; // test if at first item
bool atLast() const; // test if at last item
TQPtrCollection::Item toFirst(); // move to first item
TQPtrCollection::Item toLast(); // move to last item
TQPtrCollection::Item get() const; // get current item
TQPtrCollection::Item operator()(); // get current and move to next
TQPtrCollection::Item operator++(); // move to next item (prefix)
TQPtrCollection::Item operator+=(uint); // move n positions forward
TQPtrCollection::Item operator--(); // move to prev item (prefix)
TQPtrCollection::Item operator-=(uint); // move n positions backward
protected:
TQGList *list; // reference to list
private:
TQLNode *curNode; // current node in list
};
inline bool TQGListIterator::atFirst() const
{
return curNode == list->firstNode;
}
inline bool TQGListIterator::atLast() const
{
return curNode == list->lastNode;
}
inline TQPtrCollection::Item TQGListIterator::get() const
{
return curNode ? curNode->data : 0;
}
class TQ_EXPORT TQGListStdIterator
{
public:
inline TQGListStdIterator( TQLNode* n ) : node( n ){}
inline operator TQLNode* () { return node; }
protected:
inline TQLNode *next() { return node->next; }
TQLNode *node;
};
#endif // TQGLIST_H
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