#include "MDBModelSorter.h"
#include "MediaManagerUtils.h"

#include <QMap>
#include <QVariant>

MDBModelSorter::MDBModelSorter( const QDomNodeList& _nodes, QHash<int, int>& _mapping, int _column, int _role )
{
	nodes = &_nodes;
	mapping = &_mapping;
	column = _column;
	role = _role;
}

bool MDBModelSorter::operator()( const QVariant& left, const QVariant& right ) const
{
	return MediaManagerUtils::operator<( left, right );
}

void MDBModelSorter::sortAscending( const QMap<QVariant, int>& entries )
{
	// build ascending mapping
	QMap<QVariant, int>::const_iterator iterator = entries.constBegin();
	int row = 0;

	for ( ; iterator != entries.constEnd(); ++iterator ) {
		(*mapping)[ row++ ] = iterator.value();
	}
}

void MDBModelSorter::sortDescending( const QMap<QVariant, int>& entries )
{
	// build descending mapping
	QMap<QVariant, int>::const_iterator iterator = --entries.constEnd();
	int row = 0;

	for ( ; iterator != entries.constEnd(); --iterator ) {
		(*mapping)[ row++ ] = iterator.value();
	}
}