RowsJoinerProxy.cpp - /* * -* "THE BEER-WARE LICENSE"...

/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* [email protected] wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return Oleksandr Iakovliev
* ----------------------------------------------------------------------------
*/
#include <QtCore>
#include "RowsJoinerProxy.h"
class RowsJoinerProxy::Private {
public:
RowsJoinerProxy * instance;
QList<QAbstractItemModel *> models;
int columnCount;
int rowCount;
struct Addr;
typedef QSharedPointer<Addr> AddrPtr;
typedef QList<AddrPtr> AddrRow;
typedef QList<AddrRow> AddrMatrix;
struct Addr {
Addr(const QAbstractItemModel * _m, void * _p)
:m(_m),p(_p),root(true) {}
const QAbstractItemModel * m;
void * p;
bool root;
AddrMatrix down;
};
AddrMatrix tops;
int topRowShift(const QAbstractItemModel *) const;
void checkExpand(AddrMatrix &, int row, int col);
AddrPtr initAddrFromSource(QModelIndex source);
};
RowsJoinerProxy::RowsJoinerProxy(QObject * parent)
:QAbstractItemModel(parent)
{
d = new Private;
d->instance = this;
d->columnCount = -1;
d->rowCount = -1;
}
RowsJoinerProxy::~RowsJoinerProxy() {
while(d->models.size())
removeSourceModel(d->models.back());
delete d;
}
QList<QAbstractItemModel *> RowsJoinerProxy::models() const { return d-
>models; }
int RowsJoinerProxy::indexOf(QAbstractItemModel * m) const { return d-
>models.indexOf(m); }
void RowsJoinerProxy::insertSourceModel(QAbstractItemModel * m, int idx)
{

if (!m)
return;
if (idx < 0)
d->models.append(m);
else d->models.insert(idx, m);
connect(m, SIGNAL(rowsAboutToBeInserted(QModelIndex, int, int)),
this, SLOT(s_rowsAboutToBeInserted(QModelIndex, int, int)));
connect(m, SIGNAL(rowsInserted(QModelIndex, int, int)),
this, SLOT(s_rowsInserted(QModelIndex, int, int)));
connect(m, SIGNAL(rowsAboutToBeRemoved(QModelIndex, int, int)),
this, SLOT(s_rowsAboutToBeRemoved(QModelIndex, int, int)));
connect(m, SIGNAL(rowsRemoved(QModelIndex, int, int)),
this, SLOT(s_rowsRemoved(QModelIndex, int, int)));
connect(m, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
this, SLOT(s_dataChanged(QModelIndex,QModelIndex)));
connect(m, SIGNAL(modelReset()),
this, SLOT(s_modelReset()));
connect(m, SIGNAL(layoutAboutToBeChanged()),
this, SIGNAL(layoutAboutToBeChanged()));
connect(m, SIGNAL(layoutChanged()),
this, SIGNAL(layoutChanged()));
connect(m, SIGNAL(destroyed(QObject *)),
this, SLOT(s_destroyed(QObject *)));
d->columnCount = -1;
d->rowCount = -1;
d->tops.clear();
reset();
}
void RowsJoinerProxy::removeSourceModel(QAbstractItemModel * m)
{
if (!m)
return;
disconnect(m,