/****************************************************************************
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** Copyright (C) 2012 Thorbjørn Lund Martsum - tmartsum[at]gmail.com
** Contact: http://www.qt-project.org/legal
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** This file is part of the test suite of the Qt Toolkit.
**
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
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#include <QtWidgets/QtWidgets>

class ExampleEditor : public QLineEdit
{
public:
    ExampleEditor(QWidget *parent = 0):QLineEdit(parent) { qDebug() << "ctor"; }
    ~ExampleEditor() { QApplication::instance()->quit(); }
};

class ExampleDelegate : public QItemDelegate
{
public:
    ExampleDelegate():QItemDelegate() { m_editor = new ExampleEditor(0); }
protected:
    QWidget* createEditor(QWidget *p, const QStyleOptionViewItem &o, const QModelIndex &) const
    {
        m_editor->setParent(p);
        m_editor->setGeometry(o.rect);
        return m_editor;
    }
    void destroyEditor(QWidget *editor, const QModelIndex &) const
    {
        editor->setParent(0);
        qDebug() << "intercepted destroy :)";
    }

    // Avoid setting data - and therefore show that the editor keeps its state.
    void setEditorData(QWidget*, const QModelIndex &) const { }

    ~ExampleDelegate() { delete m_editor; }
    mutable ExampleEditor *m_editor;
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QTableView tv;
    QStandardItemModel m;
    m.setRowCount(4);
    m.setColumnCount(2);
    tv.setModel(&m);
    tv.show();
    tv.setItemDelegate(new ExampleDelegate());
    app.exec();
}
