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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the Qt3Support module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef Q3GLIST_H
#define Q3GLIST_H
#include <Qt3Support/q3ptrcollection.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Qt3SupportLight)
class Q_COMPAT_EXPORT Q3LNode
{
friend class Q3GList;
friend class Q3GListIterator;
friend class Q3GListStdIterator;
public:
Q3PtrCollection::Item getData() { return data; }
private:
Q3PtrCollection::Item data;
Q3LNode *prev;
Q3LNode *next;
Q3LNode( Q3PtrCollection::Item d ) { data = d; }
};
class Q3GListIteratorList; // internal helper class
class Q_COMPAT_EXPORT Q3GList : public Q3PtrCollection // doubly linked generic list
{
friend class Q3GListIterator;
friend class Q3GListIteratorList;
friend class Q3GVector; // needed by Q3GVector::toList
public:
uint count() const; // return number of nodes
#ifndef QT_NO_DATASTREAM
QDataStream &read( QDataStream & ); // read list from stream
QDataStream &write( QDataStream & ) const; // write list to stream
#endif
protected:
Q3GList(); // create empty list
Q3GList( const Q3GList & ); // make copy of other list
virtual ~Q3GList();
Q3GList &operator=( const Q3GList & ); // assign from other list
bool operator==( const Q3GList& ) const;
void inSort( Q3PtrCollection::Item ); // add item sorted in list
void append( Q3PtrCollection::Item ); // add item at end of list
bool insertAt( uint index, Q3PtrCollection::Item ); // add item at i'th position
void relinkNode( Q3LNode * ); // relink as first item
bool removeNode( Q3LNode * ); // remove node
bool remove( Q3PtrCollection::Item = 0 ); // remove item (0=current)
bool removeRef( Q3PtrCollection::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, Q3PtrCollection::Item ); // replace item at position i with item
Q3PtrCollection::Item takeNode( Q3LNode * ); // take out node
Q3PtrCollection::Item take(); // take out current item
Q3PtrCollection::Item takeAt( uint index ); // take out item at i'th pos
Q3PtrCollection::Item takeFirst(); // take out first item
Q3PtrCollection::Item takeLast(); // take out last item
void sort(); // sort all items;
void clear(); // remove all items
int findRef( Q3PtrCollection::Item, bool = true ); // find exact item in list
int find( Q3PtrCollection::Item, bool = true ); // find equal item in list
uint containsRef( Q3PtrCollection::Item ) const; // get number of exact matches
uint contains( Q3PtrCollection::Item ) const; // get number of equal matches
Q3PtrCollection::Item at( uint index ); // access item at i'th pos
int at() const; // get current index
Q3LNode *currentNode() const; // get current node
Q3PtrCollection::Item get() const; // get current item
Q3PtrCollection::Item cfirst() const; // get ptr to first list item
Q3PtrCollection::Item clast() const; // get ptr to last list item
Q3PtrCollection::Item first(); // set first item in list curr
Q3PtrCollection::Item last(); // set last item in list curr
Q3PtrCollection::Item next(); // set next item in list curr
Q3PtrCollection::Item prev(); // set prev item in list curr
void toVector( Q3GVector * ) const; // put items in vector
virtual int compareItems( Q3PtrCollection::Item, Q3PtrCollection::Item );
#ifndef QT_NO_DATASTREAM
virtual QDataStream &read( QDataStream &, Q3PtrCollection::Item & );
virtual QDataStream &write( QDataStream &, Q3PtrCollection::Item ) const;
#endif
Q3LNode* begin() const { return firstNode; }
Q3LNode* end() const { return 0; }
Q3LNode* erase( Q3LNode* it );
private:
void prepend( Q3PtrCollection::Item ); // add item at start of list
void heapSortPushDown( Q3PtrCollection::Item* heap, int first, int last );
Q3LNode *firstNode; // first node
Q3LNode *lastNode; // last node
Q3LNode *curNode; // current node
int curIndex; // current index
uint numNodes; // number of nodes
Q3GListIteratorList *iterators; // list of iterators
Q3LNode *locate( uint ); // get node at i'th pos
Q3LNode *unlink(); // unlink node
};
inline uint Q3GList::count() const
{
return numNodes;
}
inline bool Q3GList::removeFirst()
{
first();
return remove();
}
inline bool Q3GList::removeLast()
{
last();
return remove();
}
inline int Q3GList::at() const
{
return curIndex;
}
inline Q3PtrCollection::Item Q3GList::at( uint index )
{
Q3LNode *n = locate( index );
return n ? n->data : 0;
}
inline Q3LNode *Q3GList::currentNode() const
{
return curNode;
}
inline Q3PtrCollection::Item Q3GList::get() const
{
return curNode ? curNode->data : 0;
}
inline Q3PtrCollection::Item Q3GList::cfirst() const
{
return firstNode ? firstNode->data : 0;
}
inline Q3PtrCollection::Item Q3GList::clast() const
{
return lastNode ? lastNode->data : 0;
}
/*****************************************************************************
Q3GList stream functions
*****************************************************************************/
#ifndef QT_NO_DATASTREAM
Q_COMPAT_EXPORT QDataStream &operator>>( QDataStream &, Q3GList & );
Q_COMPAT_EXPORT QDataStream &operator<<( QDataStream &, const Q3GList & );
#endif
/*****************************************************************************
Q3GListIterator class
*****************************************************************************/
class Q_COMPAT_EXPORT Q3GListIterator // Q3GList iterator
{
friend class Q3GList;
friend class Q3GListIteratorList;
protected:
Q3GListIterator( const Q3GList & );
Q3GListIterator( const Q3GListIterator & );
Q3GListIterator &operator=( const Q3GListIterator & );
~Q3GListIterator();
bool atFirst() const; // test if at first item
bool atLast() const; // test if at last item
Q3PtrCollection::Item toFirst(); // move to first item
Q3PtrCollection::Item toLast(); // move to last item
Q3PtrCollection::Item get() const; // get current item
Q3PtrCollection::Item operator()(); // get current and move to next
Q3PtrCollection::Item operator++(); // move to next item (prefix)
Q3PtrCollection::Item operator+=(uint); // move n positions forward
Q3PtrCollection::Item operator--(); // move to prev item (prefix)
Q3PtrCollection::Item operator-=(uint); // move n positions backward
protected:
Q3GList *list; // reference to list
private:
Q3LNode *curNode; // current node in list
};
inline bool Q3GListIterator::atFirst() const
{
return curNode == list->firstNode;
}
inline bool Q3GListIterator::atLast() const
{
return curNode == list->lastNode;
}
inline Q3PtrCollection::Item Q3GListIterator::get() const
{
return curNode ? curNode->data : 0;
}
class Q_COMPAT_EXPORT Q3GListStdIterator
{
public:
inline Q3GListStdIterator( Q3LNode* n ) : node( n ){}
inline operator Q3LNode* () { return node; }
protected:
inline Q3LNode *next() { return node->next; }
Q3LNode *node;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // Q3GLIST_H
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