classe TreeItem;
class TreeModel : public QAbstractItemModel
{
    Q_OBJECT

public:
    explicit TreeModel(const QString &data, QObject *parent = 0);
    ~TreeModel();

    QVariant data(const QModelIndex &index, int role) const Q_DECL_OVERRIDE;
    Qt::ItemFlags flags(const QModelIndex &index) const Q_DECL_OVERRIDE;
    QVariant headerData(int section, Qt::Orientation orientation,
                        int role = Qt::DisplayRole) const Q_DECL_OVERRIDE;
    QModelIndex index(int row, int column,
                      const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
    QModelIndex parent(const QModelIndex &index) const Q_DECL_OVERRIDE;
    int rowCount(const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
    int columnCount(const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
    QHash<int, QByteArray> roleNames() const;


    enum TreeRoles {

        titleRole,
        summaryRole
    };

private:
    void setupModelData(const QStringList &lines, TreeItem *parent);

    TreeItem *rootItem;
};
//! [0]

TreeModel::TreeModel(const QString &data, QObject *parent)
    : QAbstractItemModel(parent)
{
    QList<QVariant> rootData;
    rootData << "Title" << "Summary";
    rootItem = new TreeItem(rootData);
    setupModelData(data.split(QString("n")), rootItem);
}
//! [0]

//! [1]
TreeModel::~TreeModel()
{
    delete rootItem;
}
//! [1]

//! [2]
int TreeModel::columnCount(const QModelIndex &parent) const
{
    if (parent.isValid())
        return static_cast<TreeItem*>(parent.internalPointer())->columnCount();
    else
        return rootItem->columnCount();
}
//! [2]

//! [3]

//! [3]

//! [4]
Qt::ItemFlags TreeModel::flags(const QModelIndex &index) const
{
    if (!index.isValid())
        return 0;

    return QAbstractItemModel::flags(index);
}
//! [4]

//! [5]
QVariant TreeModel::headerData(int section, Qt::Orientation orientation,
                               int role) const
{
    if (orientation == Qt::Horizontal && role == Qt::DisplayRole)
        return rootItem->data(section);

    return QVariant();
}
//! [5]

//! [6]
QModelIndex TreeModel::index(int row, int column, const QModelIndex &parent)
            const
{
    if (!hasIndex(row, column, parent))
        return QModelIndex();

    TreeItem *parentItem;

    if (!parent.isValid())
        parentItem = rootItem;
    else
        parentItem = static_cast<TreeItem*>(parent.internalPointer());

    TreeItem *childItem = parentItem->child(row);
    if (childItem)
        return createIndex(row, column, childItem);
    else
        return QModelIndex();
}
//! [6]

//! [7]
QModelIndex TreeModel::parent(const QModelIndex &index) const
{
    if (!index.isValid())
        return QModelIndex();

    TreeItem *childItem = static_cast<TreeItem*>(index.internalPointer());
    TreeItem *parentItem = childItem->parentItem();

    if (parentItem == rootItem)
        return QModelIndex();

    return createIndex(parentItem->row(), 0, parentItem);
}
//! [7]

//! [8]
int TreeModel::rowCount(const QModelIndex &parent) const
{
    TreeItem *parentItem;
    if (parent.column() > 0)
        return 0;

    if (!parent.isValid())
        parentItem = rootItem;
    else
        parentItem = static_cast<TreeItem*>(parent.internalPointer());

    return parentItem->childCount();
}
//! [8]

void TreeModel::setupModelData(const QStringList &lines, TreeItem *parent)
{
    QList<TreeItem*> parents;
    QList<int> indentations;
    parents << parent;
    indentations << 0;

    int number = 0;

    while (number < lines.count()) {
        int position = 0;
        while (position < lines[number].length()) {
            if (lines[number].at(position) != ' ')
                break;
            position++;
        }

        QString lineData = lines[number].mid(position).trimmed();

        if (!lineData.isEmpty()) {
            // Read the column data from the rest of the line.
            QStringList columnStrings = lineData.split("t", QString::SkipEmptyParts);
            QList<QVariant> columnData;
            for (int column = 0; column < columnStrings.count(); ++column)
                columnData << columnStrings[column];

            if (position > indentations.last()) {
                // The last child of the current parent is now the new parent
                // unless the current parent has no children.

                if (parents.last()->childCount() > 0) {
                    parents << parents.last()->child(parents.last()->childCount()-1);
                    indentations << position;
                }
            } else {
                while (position < indentations.last() && parents.count() > 0) {
                    parents.pop_back();
                    indentations.pop_back();
                }
            }

            // Append a new item to the current parent's list of children.
            parents.last()->appendChild(new TreeItem(columnData, parents.last()));
        }

        ++number;
    }
}

QVariant TreeModel::data(const QModelIndex & index, int role) const {
    if (!index.isValid())
         return QVariant();
    TreeItem *item = static_cast<TreeItem*>(index.internalPointer());
    if (index.isValid()) {
        switch (role) {
        case titleRole:
            return item->data(0);
        case summaryRole:
            return item->data(0);
        }
    }
    return QVariant();
}

QHash<int, QByteArray> TreeModel::roleNames() const {
    QHash<int, QByteArray> roles;

    roles[titleRole] = "title";
    roles[summaryRole] = "summary";

    return roles;
}

class TreeItem
{
public:
    explicit TreeItem(const QList<QVariant> &data, TreeItem *parentItem = 0);
    ~TreeItem();

    void appendChild(TreeItem *child);

    TreeItem *child(int row);
    int childCount() const;
    int columnCount() const;
    QVariant data(int column) const;
    int row() const;
    TreeItem *parentItem();


private:
    QList<TreeItem*> m_childItems;
    QList<QVariant> m_itemData;
    TreeItem *m_parentItem;
};

//! [0]
TreeItem::TreeItem(const QList<QVariant> &data, TreeItem *parent)
{
    m_parentItem = parent;
    m_itemData = data;
}
//! [0]

//! [1]
TreeItem::~TreeItem()
{
    qDeleteAll(m_childItems);
}
//! [1]

//! [2]
void TreeItem::appendChild(TreeItem *item)
{
    m_childItems.append(item);
}
//! [2]

//! [3]
TreeItem *TreeItem::child(int row)
{
    return m_childItems.value(row);
}
//! [3]

//! [4]
int TreeItem::childCount() const
{
    return m_childItems.count();
}
//! [4]

//! [5]
int TreeItem::columnCount() const
{
    return m_itemData.count();
}
//! [5]

//! [6]
QVariant TreeItem::data(int column) const
{
    return m_itemData.value(column);
}
//! [6]

//! [7]
TreeItem *TreeItem::parentItem()
{
    return m_parentItem;
}
//! [7]

//! [8]
int TreeItem::row() const
{
    if (m_parentItem)
        return m_parentItem->m_childItems.indexOf(const_cast<TreeItem*>(this));

    return 0;
}
//! [8]

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QtQml>
#include <QQuickView>
#include "QQuickWidget"
#include <QFile>

#include "treemodel.h"


MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    QQuickWidget *view = new QQuickWidget;
    QQmlContext *ctxt = view->rootContext();


    QFile file("default.txt");
    file.open(QIODevice::ReadOnly);
    TreeModel model(file.readAll());
    file.close();
    ctxt->setContextProperty("myModel", &model);
    view->setSource(QUrl::fromLocalFile("main.qml"));
    view->setGeometry(0, 200, 600, 400);
    view->setResizeMode(QQuickWidget::SizeRootObjectToView);
    ui->dockWidget->setWidget(view);
}

MainWindow::~MainWindow()
{
    delete ui;
}

import QtQuick 2.0
import QtQml.Models 2.2
import QtQuick.Controls 1.5

Rectangle {
    id : rootRectangle
    visible: true
    color:"red"


    TreeView {
        id: view
        anchors.fill: parent
        model: myModel

        TableViewColumn {
            title: "title"
            role: "title"
            resizable: true
        }

        TableViewColumn {
            title: "summary"
            role: "summary"
            resizable: true
            horizontalAlignment : Text.AlignRight
            width: 70
        }

    }

}