QGListIterator Class Reference

The QGListIterator class is an internal class for implementing QListIterator. More...

#include <qglist.h>

Inheritance diagram for QGListIterator:

Protected Member Functions
	QGListIterator (const QGList &)
	QGListIterator (const QGListIterator &)
QGListIterator &	operator= (const QGListIterator &)
	~QGListIterator ()
bool	atFirst () const
bool	atLast () const
QCollection::Item	toFirst ()
QCollection::Item	toLast ()
QCollection::Item	get () const
QCollection::Item	operator() ()
QCollection::Item	operator++ ()
QCollection::Item	operator+= (uint)
QCollection::Item	operator-- ()
QCollection::Item	operator-= (uint)

Protected Attributes
QGList *	list

Private Attributes
QLNode *	curNode

Friends
class	QGList

Detailed Description

The QGListIterator class is an internal class for implementing QListIterator.

QGListIterator is a strictly internal class that does the heavy work for QListIterator.

Definition at line 212 of file qglist.h.

Constructor & Destructor Documentation

QGListIterator::QGListIterator ( const QGList &  l )

protected

Definition at line 1055 of file qglist.cpp.

{
    list = (QGList *)&l;                        // get reference to list
    curNode = list->firstNode;                  // set to first node
    if ( !list->iterators ) {
        list->iterators = new QGList;           // create iterator list
        CHECK_PTR( list->iterators );
    }
    list->iterators->append( this );            // attach iterator to list
}

QGListIterator::QGListIterator ( const QGListIterator &  it )

protected

Definition at line 1071 of file qglist.cpp.

{
    list = it.list;
    curNode = it.curNode;
    if ( list )
        list->iterators->append( this );        // attach iterator to list
}

QGListIterator::~QGListIterator ( )

protected

Definition at line 1101 of file qglist.cpp.

{
    if ( list )                                 // detach iterator from list
        list->iterators->removeRef(this);
}

Member Function Documentation

bool QGListIterator::atFirst ( ) const

inlineprotected

Definition at line 241 of file qglist.h.

{
    return curNode == list->firstNode;
}

bool QGListIterator::atLast ( ) const

inlineprotected

Definition at line 246 of file qglist.h.

{
    return curNode == list->lastNode;
}

QCollection::Item QGListIterator::get ( ) const

inlineprotected

Definition at line 251 of file qglist.h.

{
    return curNode ? curNode->data : 0;
}

QCollection::Item QGListIterator::operator() ( )

protected

Definition at line 1166 of file qglist.cpp.

{
    if ( !curNode )
        return 0;
    QCollection::Item d = curNode->getData();
    curNode = curNode->next;
    return  d;
}

QCollection::Item QGListIterator::operator++ ( )

protected

Definition at line 1180 of file qglist.cpp.

{
    if ( !curNode )
        return 0;
    curNode = curNode->next;
    return curNode ? curNode->getData() : 0;
}

QCollection::Item QGListIterator::operator+= ( uint  jumps )

protected

Definition at line 1193 of file qglist.cpp.

{
    while ( curNode && jumps-- )
        curNode = curNode->next;
    return curNode ? curNode->getData() : 0;
}

QCollection::Item QGListIterator::operator-- ( )

protected

Definition at line 1205 of file qglist.cpp.

{
    if ( !curNode )
        return 0;
    curNode = curNode->prev;
    return curNode ? curNode->getData() : 0;
}

QCollection::Item QGListIterator::operator-= ( uint  jumps )

protected

Definition at line 1218 of file qglist.cpp.

{
    while ( curNode && jumps-- )
        curNode = curNode->prev;
    return curNode ? curNode->getData() : 0;
}

QGListIterator & QGListIterator::operator= ( const QGListIterator &  it )

protected

Definition at line 1085 of file qglist.cpp.

{
    if ( list )                                 // detach from old list
        list->iterators->removeRef( this );
    list = it.list;
    curNode = it.curNode;
    if ( list )
        list->iterators->append( this );        // attach to new list
    return *this;
}

QCollection::Item QGListIterator::toFirst ( )

protected

Definition at line 1126 of file qglist.cpp.

{
    if ( !list ) {
#if defined(CHECK_NULL)
        qWarning( "QGListIterator::toFirst: List has been deleted" );
#endif
        return 0;
    }
    return list->firstNode ? (curNode = list->firstNode)->getData() : 0;
}

QCollection::Item QGListIterator::toLast ( )

protected

Definition at line 1142 of file qglist.cpp.

{
    if ( !list ) {
#if defined(CHECK_NULL)
        qWarning( "QGListIterator::toLast: List has been deleted" );
#endif
        return 0;
    }
    return list->lastNode ? (curNode = list->lastNode)->getData() : 0;
}

Friends And Related Function Documentation

friend class QGList

friend

Definition at line 214 of file qglist.h.

Member Data Documentation

QLNode* QGListIterator::curNode

private

Definition at line 237 of file qglist.h.

QGList* QGListIterator::list

protected

Definition at line 234 of file qglist.h.

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The documentation for this class was generated from the following files:

• doxygen-1.8.11/qtools/qglist.h
• doxygen-1.8.11/qtools/qglist.cpp