Edit data from a custom QAbstractTableModel through a modal dialog

marinamarina

I have a subclass of QDialog that I'd like to use as the table editor. I subclassed QAbstractTableModel so I can manipulate a QHash <int, triplet>. triplet is a custom class.

I tried subclassing QStyledItemDelegate as well, but I couldn't get it to actually set data. so I tried ading a slot to the table model that creates the dialog, gets the data and calls setData, with the slot being activated by a double click signal. I got the dialog to show, but the data wasn't being set.

I'm now trying to have setData call that function and now I can't even get the editor to show! please, advise. here's the editor header
@
#ifndef TABLE_EDITOR_H
#define TABLE_EDITOR_H
#include <QComboBox>
#include <QDialog>
#include <QPushButton>
#include <QGroupBox>
#include "triplet.h"
#include "table_model.h"

class table_editor: public QDialog
{
Q_OBJECT

    public:
        table_editor();
        QMap<QString, signed int> shifts;
        QComboBox* n_state;
        QComboBox* n_symbol;
        QComboBox* move;
        triplet setTriplet();

    signals:
        void editingFinished();

    protected:
        void paintEvent(QPaintEvent* e) {
            QWidget::paintEvent(e);
        }

    private:
        triplet t;
    };

#endif // TABLE_EDITOR_H
@
editor source
@
#include <QGroupBox>
#include <QDialogButtonBox>
#include <QLineEdit>
#include <QLabel>

table_editor::table_editor()
{
QFormLayout *layout = new QFormLayout();
n_state=new QComboBox();
n_symbol=new QComboBox();
move = new QComboBox();
layout->addRow(new QLabel("Iduće stanje: "), n_state);
layout->addRow(new QLabel("Izlazni simbol: "), n_symbol);
layout->addRow(new QLabel("Pomak: "), move);

QPushButton *ok = new QPushButton("Prihvati");
QPushButton *cancel = new QPushButton("Odustani");

QDialogButtonBox *buttonBox = new QDialogButtonBox();
buttonBox->addButton(ok, QDialogButtonBox::AcceptRole);
buttonBox->addButton(cancel, QDialogButtonBox::RejectRole);

connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

layout->addRow(buttonBox);
//layout->addWidget(buttonBox);
this->setLayout(layout);

connect(buttonBox, SIGNAL(accepted()), this, SIGNAL(editingFinished()));

}

triplet table_editor::setTriplet()
{
t.nextState=n_state->currentText().toInt();
t.nextSymbol=n_symbol->currentText();
t.shift=shifts.value(move->currentText());
return t;
}
@

the slot, belonging to the table model
@
triplet table_model::activate_editor()
{
table_editor *edit= new table_editor();
edit->setModal(true);
edit->setGeometry(200, 200, 100, 100);
edit->n_state->addItems(table_model::get_state());
edit->n_symbol->addItems(table_model::get_symbols());
edit->move->addItems(table_model::get_move_options());

connect(edit, SIGNAL(editingFinished()),
        this, SLOT(commitAndCloseEditor()));
edit->exec&#40;&#41;;
triplet *t = new triplet(&#41;;
t->nextState=edit->n_state->currentText().toInt();
t->nextSymbol=edit->n_symbol->currentText();
t->shift=edit->shifts.value(edit->move->currentText());
return *t;

}
@
and how I'm calling it right now from setData
@
bool table_model::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (index.isValid() && role == Qt::EditRole) {
const int a=index.column()*100+index.row();
triplet t = activate_editor();
_table->insert(a, t);
emit dataChanged(index, index);
return true;
}
return false;
}
@

I googled, tried, and failed. Could you help?