qt5base-lts/tests/manual/widgets/itemviews/delegate/example.cpp
Jani Heikkinen 83a5694dc2 Update copyright headers
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.

Outdated header.LGPL removed (use header.LGPL21 instead)

Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)

Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination

Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
2015-02-11 06:49:51 +00:00

113 lines
3.9 KiB
C++

/****************************************************************************
**
** Copyright (C) 2012 Thorbjørn Lund Martsum - tmartsum[at]gmail.com
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QLineEdit>
#include <QApplication>
#include <QTableView>
#include <QStandardItemModel>
#include <QItemDelegate>
#include <QDebug>
#include <QComboBox>
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);
m_combobox = new QComboBox(0);
m_combobox->addItem(QString::fromUtf8("item1"));
m_combobox->addItem(QString::fromUtf8("item2"));
}
protected:
QWidget* createEditor(QWidget *p, const QStyleOptionViewItem &o, const QModelIndex &i) const
{
// doubleclick rownumber 3 (last row) to see the difference.
if (i.row() == 3) {
m_combobox->setParent(p);
m_combobox->setGeometry(o.rect);
return m_combobox;
} else {
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* w, const QModelIndex &) const
{
QComboBox *combobox = qobject_cast<QComboBox*>(w);
if (combobox) {
qDebug() << "Try to show popup at once";
// Now we could try to make a call to
// QCoreApplication::processEvents();
// But it does not matter. The fix:
// https://codereview.qt-project.org/40608
// is blocking QComboBox from reacting to this doubleclick edit event
// and we need to do that since the mouseReleaseEvent has not yet happened,
// and therefore cannot be processed.
combobox->showPopup();
}
}
~ExampleDelegate() { delete m_editor; }
mutable ExampleEditor *m_editor;
mutable QComboBox *m_combobox;
};
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();
}