C++ iterator::row方法代码示例

void CommandDataModel::removeRows(QModelIndexList indices)
{
    while (!indices.empty()) {
        const int row = indices.takeFirst().row();
        if (row >= mCommands.size())
            continue;

        beginRemoveRows(QModelIndex(), row, row);
        mCommands.removeAt(row);

        // Decrement later indices since we removed a row
        for (QModelIndexList::iterator i = indices.begin(); i != indices.end();
                                                                            ++i)
            if (i->row() > row)
                *i = i->sibling(i->row() - 1, i->column());

        endRemoveRows();
    }
}

void TourWidgetPrivate::updateButtonsStates()
{
    QModelIndexList selectedIndexes = m_tourUi.m_listView->selectionModel()->selectedIndexes();
    if ( selectedIndexes.isEmpty() ) {
        m_tourUi.m_actionDelete->setEnabled( false );
        m_tourUi.m_actionMoveDown->setEnabled( false );
        m_tourUi.m_actionMoveUp->setEnabled( false );
    } else {
        m_tourUi.m_actionDelete->setEnabled( true );
        qSort( selectedIndexes.begin(), selectedIndexes.end(), qLess<QModelIndex>() );
        QModelIndexList::iterator end = selectedIndexes.end()-1;
        QModelIndexList::iterator start = selectedIndexes.begin();
        m_tourUi.m_actionMoveUp->setEnabled( ( start->row() != 0 ) ); // if we can move up enable action else disable.
        GeoDataObject *rootObject =  rootIndexObject();
        if ( rootObject && rootObject->nodeType() == GeoDataTypes::GeoDataPlaylistType ) {
            GeoDataPlaylist *playlist = static_cast<GeoDataPlaylist*>( rootObject );
            m_tourUi.m_actionMoveDown->setEnabled( ( end->row() != playlist->size()-1 ) ); // if we can move down enable action else disable.
        }
    }
}

void LineEditDialog::on_deselectPlyButton_pressed()
{
	QModelIndexList selected = this->selectedPlyView->selectionModel()->selectedIndexes();
	QStringList list = _allPly->stringList();

	for (QModelIndexList::iterator it = selected.begin(); it != selected.end(); ++it)
	{
		list.append(it->data().toString());

		_selPly->removeRow(it->row());
	}
	_allPly->setStringList(list);
}

void GMSHPrefsDialog::on_selectGeoButton_pressed()
{
	QModelIndexList selected = this->allGeoView->selectionModel()->selectedIndexes();
	QStringList list = _selGeo->stringList();

	for (QModelIndexList::iterator it = selected.begin(); it != selected.end(); ++it)
	{
		list.append(it->data().toString());

		_allGeo->removeRow(it->row());
	}
	_selGeo->setStringList(list);
}

void DoubleList::on_m_pAddB_clicked()
{
    QItemSelectionModel* pSelMdl (m_pAvailableG->selectionModel());
    QModelIndexList lSel (pSelMdl->selection().indexes());

    set<int> sSelPos; // the rows must be sorted

    for (QModelIndexList::iterator it = lSel.begin(), end = lSel.end(); it != end; ++it)
    {
        int nRow (it->row());
        CB_ASSERT (nRow >= 0);
        sSelPos.insert(nRow);
    }

    add(sSelPos);
}

void DoubleList::on_m_pDeleteB_clicked()
{
    if (m_listPainter.m_vSel.empty()) { return; }
    QItemSelectionModel* pSelMdl (m_pSelectedG->selectionModel());
    QModelIndexList lSel (pSelMdl->selection().indexes());

    set<int> sSelPos; // the rows must be sorted and the last must be processed first, so removal of elements doesn't change the row number for the remaining ones

    for (QModelIndexList::iterator it = lSel.begin(), end = lSel.end(); it != end; ++it)
    {
        int nRow (it->row());
        CB_ASSERT (nRow >= 0);
        sSelPos.insert(nRow);
    }

    remove(sSelPos);
}

void FilesModel::fixSelection() // deselects cells that are selected but are on a different row from the "current" cell and selects the file name
{
    // it works OK when getFltHandlers() is empty
    QItemSelectionModel* pSelModel (m_pCommonData->m_pFilesG->selectionModel());
    QModelIndexList lstSel (pSelModel->selection().indexes());
    QModelIndex crt (m_pCommonData->m_pFilesG->selectionModel()->currentIndex());
    int nCrtRow (crt.row());
    int nCrtCol (crt.column());

    if (0 == nCrtCol)
    {
        for (QModelIndexList::iterator it = lstSel.begin(), end = lstSel.end(); it != end; ++it)
        {
            if (0 != it->column())
            {
                pSelModel->select(*it, QItemSelectionModel::Deselect);
            }
        }
    }
    else
    {
        set<int> sSelectableColumns;
        sSelectableColumns.insert(0);
        for (int i = 0, n = cSize(m_pCommonData->getCrtNotes()); i < n; ++i) // ttt2 poor performance
        {
            const Note* pNote (m_pCommonData->getCrtNotes()[i]);
            sSelectableColumns.insert(m_pCommonData->findPos(pNote) + 1);
        }

        for (QModelIndexList::iterator it = lstSel.begin(), end = lstSel.end(); it != end; ++it)
        {
            if ((it->row() != nCrtRow && 0 != it->column()) || 0 == sSelectableColumns.count(it->column()))
            {
                pSelModel->select(*it, QItemSelectionModel::Deselect);
            }
        }

        if (nCrtRow >= 0)
        {
            pSelModel->select(index(nCrtRow, 0), QItemSelectionModel::Select);
        }
    }
}

void TourWidgetPrivate::moveDown()
{
    GeoDataObject *rootObject = rootIndexObject();
    if ( rootObject && rootObject->nodeType() == GeoDataTypes::GeoDataPlaylistType ) {
        GeoDataPlaylist *playlist = static_cast<GeoDataPlaylist*>( rootObject );
        QModelIndex playlistIndex = m_widget->model()->treeModel()->index( playlist );
        QModelIndexList selected = m_tourUi.m_listView->selectionModel()->selectedIndexes();
        qSort( selected.begin(), selected.end(), qGreater<QModelIndex>() );
        QModelIndexList::iterator end = selected.end();
        QModelIndexList::iterator iter = selected.begin();
        for( ; iter != end; ++iter ) {
            int const index = iter->row();
            Q_ASSERT( index < playlist->size()-1 );
            m_widget->model()->treeModel()->swapTourPrimitives( playlistIndex, index, index+1 );
        }
        m_isChanged = true;
        m_tourUi.m_actionSaveTour->setEnabled( true );
        updateButtonsStates();
    }
}

void TourWidgetPrivate::deleteSelected()
{
    QString title = QObject::tr( "Remove Selected Items" );
    QString text = QObject::tr( "Are you sure want to remove selected items?" );
    QPointer<QMessageBox> dialog = new QMessageBox( QMessageBox::Question, title, text, QMessageBox::Yes | QMessageBox::No, q );
    dialog->setDefaultButton( QMessageBox::No );
    if ( dialog->exec() == QMessageBox::Yes ) {
        GeoDataObject *rootObject =  rootIndexObject();
        if ( rootObject && rootObject->nodeType() == GeoDataTypes::GeoDataPlaylistType ) {
            GeoDataPlaylist *playlist = static_cast<GeoDataPlaylist*>( rootObject );
            QModelIndex playlistIndex = m_widget->model()->treeModel()->index( playlist );
            QModelIndexList selected = m_tourUi.m_listView->selectionModel()->selectedIndexes();
            qSort( selected.begin(), selected.end(), qGreater<QModelIndex>() );
            QModelIndexList::iterator end = selected.end();
            QModelIndexList::iterator iter = selected.begin();
            for( ; iter != end; ++iter ) {
                m_widget->model()->treeModel()->removeTourPrimitive( playlistIndex, iter->row() );
            }
            m_isChanged = true;
            m_tourUi.m_actionSaveTour->setEnabled( true );
        }
    }
    delete dialog;
}

void FilesModel::matchSelToNotes()
{
    QItemSelectionModel* pNotesSelModel (m_pCommonData->m_pNotesG->selectionModel());
    QModelIndexList notesLstSel (pNotesSelModel->selection().indexes());

    set<int> sSel;
    for (QModelIndexList::iterator it = notesLstSel.begin(), end = notesLstSel.end(); it != end; ++it)
    {
//cout << "cell sel at " << it->row() << "x" << it->column() << endl;
        const Note* pNote (m_pCommonData->getCrtNotes()[it->row()]);
        int nPos (m_pCommonData->findPos(pNote));
        sSel.insert(nPos);
    }

    m_pCommonData->m_pFilesG->selectionModel()->clearSelection();

    for (set<int>::const_iterator it = sSel.begin(), end = sSel.end(); it != end; ++it)
    {
        m_pCommonData->m_pFilesG->selectionModel()->select(index(m_pCommonData->getFilesGCrtRow(), *it + 1), QItemSelectionModel::Select);
//cout << "selecting " << m_pCommonData->getFilesGCrtRow() << "x" << *it + 1 << endl;
    }

    m_pCommonData->m_pFilesG->selectionModel()->select(index(m_pCommonData->getFilesGCrtRow(), 0), QItemSelectionModel::Select);
}