imagedelegate.cpp Example File

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#include <QtWidgets>

#include "imagedelegate.h"
#include "iconpreviewarea.h"

ImageDelegate::ImageDelegate(QObject *parent)
    : QItemDelegate(parent)
{
}

QWidget *ImageDelegate::createEditor(QWidget *parent,
                                     const QStyleOptionViewItem & /* option */,
                                     const QModelIndex &index) const
{
    QComboBox *comboBox = new QComboBox(parent);
    if (index.column() == 1)
        comboBox->addItems(IconPreviewArea::iconModeNames());
    else if (index.column() == 2)
        comboBox->addItems(IconPreviewArea::iconStateNames());

    connect(comboBox, QOverload<int>::of(&QComboBox::activated),
            this, &ImageDelegate::emitCommitData);

    return comboBox;
}

void ImageDelegate::setEditorData(QWidget *editor,
                                  const QModelIndex &index) const
{
    QComboBox *comboBox = qobject_cast<QComboBox *>(editor);
    if (!comboBox)
        return;

    int pos = comboBox->findText(index.model()->data(index).toString(),
                                 Qt::MatchExactly);
    comboBox->setCurrentIndex(pos);
}

void ImageDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                 const QModelIndex &index) const
{
    QComboBox *comboBox = qobject_cast<QComboBox *>(editor);
    if (!comboBox)
        return;

    model->setData(index, comboBox->currentText());
}

void ImageDelegate::emitCommitData()
{
    emit commitData(qobject_cast<QWidget *>(sender()));
}