#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow),
    m_scene(NULL),
    m_view(NULL),
    m_table(NULL),
    m_aGraphicItemGroup(NULL)

{
    ui->setupUi(this);

    // create our scene
    m_scene = new QGraphicsScene(this);
    m_scene->addText("Hello, world!");

    // create a simple QTableWidget, 2 rows, 2 columns, filled with "x"
    m_table = new QTableWidget;
    m_table->setColumnCount(2);
    m_table->setRowCount(2);
    for (int i=0;i<2;++i)
        for (int j=0;i<2;++i) {
            QTableWidgetItem* item = new QTableWidgetItem("x");
            m_table->setItem(i,j,item);
        }

    // create a simple QGraphicItem and add it to the scene
    m_aGraphicItemGroup = new QGraphicsItemGroup();
    m_scene->addItem(m_aGraphicItemGroup);

    // create a proxy that will contain our QTableWidget
    // add the proxy not to the scene, but to the QGrpahicItem we just added
    QGraphicsProxyWidget* tableProxy = new QGraphicsProxyWidget();
    tableProxy->setParentItem(m_aGraphicItemGroup);
    tableProxy->setWidget(m_table);

    // create a menu action that will delete the QGrpahicItem from the scene
    QMenu* deleteMenu = menuBar()->addMenu("Menu");
    QAction* deleteItem = new QAction("Delete Item",deleteMenu);
    connect(deleteItem,SIGNAL(triggered(bool)),SLOT(deleteItem()));
    deleteMenu->addAction(deleteItem);

    // creates the view with your scene, and add it to the main window
    m_view = new QGraphicsView(m_scene);
    setCentralWidget(m_view);
}

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

void MainWindow::deleteItem()
{
    if (m_aGraphicItemGroup != NULL) {
        delete m_aGraphicItemGroup;
        m_aGraphicItemGroup = NULL;
    }
}