QTDropdownDelegate.cpp

/*
 * QTDropdownDelegate.cpp
 * This file is part of ProbabilisticTraceAlignment
 *
 * Copyright (C) 2020 - Giacomo Bergami
 *
 * ProbabilisticTraceAlignment is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * ProbabilisticTraceAlignment is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with ProbabilisticTraceAlignment. If not, see <http://www.gnu.org/licenses/>.
 */

 
//
// Created by giacomo on 12/11/20.
//

#include "QTDropdownDelegate.h"

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/*
    delegate.cpp

    A delegate that allows the user to change integer values from the model
    using a spin box widget.
*/

#include "QTDropdownDelegate.h"
#include "ConfigurationFile.h"

#include <QComboBox>
#include <gui/QTBuilder.h>

//! [0]
QTDropdownDelegate::QTDropdownDelegate(QObject *parent)
        : QStyledItemDelegate(parent)
{
}
//! [0]

//! [1]
QWidget *QTDropdownDelegate::createEditor(QWidget *parent,
                                         const QStyleOptionViewItem &/* option */,
                                         const QModelIndex &/* index */) const
{
    QComboBox *editor = getDropdownMenuFromEnum<LogOperations>();
    editor->setParent(parent);
    editor->setFrame(false);
    return editor;
}
//! [1]

//! [2]
void QTDropdownDelegate::setEditorData(QWidget *editor,
                                      const QModelIndex &index) const
{
    QString value = index.model()->data(index, Qt::EditRole).toString();
    QComboBox *spinBox = static_cast<QComboBox*>(editor);
    int idx = spinBox->findText(value);
    if (idx != -1) {
        spinBox->setCurrentIndex(idx);
    }
}
//! [2]

//! [3]
void QTDropdownDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                     const QModelIndex &index) const
{
    QComboBox *spinBox = static_cast<QComboBox*>(editor);
    model->setData(index, spinBox->currentText(), Qt::EditRole);
}
//! [3]

//! [4]
void QTDropdownDelegate::updateEditorGeometry(QWidget *editor,
                                             const QStyleOptionViewItem &option,
                                             const QModelIndex &/* index */) const
{
    editor->setGeometry(option.rect);
}
//! [4]