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//! [Quoting ModelView Tutorial]

// modelview.cpp

#include <QTreeView>

#include <QStandardItemModel>

#include <QStandardItem>

#include "modelview.h"

const int ROWS = 2;

const int COLUMNS = 3;

ModelView::ModelView(QWidget *parent)

    : QMainWindow(parent)

{

    treeView = new QTreeView(this);

    setCentralWidget(treeView);

    standardModel = new QStandardItemModel ;

    QList<QStandardItem *> preparedColumn =prepareColumn("first", "second", "third");

    QStandardItem *item = standardModel->invisibleRootItem();

    // adding a row to the invisible root item produces a root element

    item->appendRow(preparedColumn);

    QList<QStandardItem *> secondRow =prepareColumn("111", "222", "333");

    // adding a row to an item starts a subtree

    preparedColumn.first()->appendRow(secondRow);

    treeView->setModel(standardModel);

    treeView->expandAll();

}

QList<QStandardItem *> ModelView::prepareColumn(const QString &first,

                                                const QString &second,

                                                const QString &third)

{

    QList<QStandardItem *> colItems;

    colItems << new QStandardItem(first);

    colItems << new QStandardItem(second);

    colItems << new QStandardItem(third);

    return colItems;

}

//! [Quoting ModelView Tutorial]