/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
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** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtTest>
#include <QtQuick>
#include <QtCore/private/qhooks_p.h>
#include <iostream>

static int qt_verbose = qgetenv("VERBOSE").toInt() != 0;

Q_GLOBAL_STATIC(QObjectList, qt_qobjects)

extern "C" Q_DECL_EXPORT void qt_addQObject(QObject *object)
{
    qt_qobjects->append(object);
}

extern "C" Q_DECL_EXPORT void qt_removeQObject(QObject *object)
{
    qt_qobjects->removeAll(object);
}

class tst_ObjectCount : public QObject
{
    Q_OBJECT

private slots:
    void init();
    void cleanup();

    void controls();
    void controls_data();

private:
    QQmlEngine engine;
};

void tst_ObjectCount::init()
{
    qtHookData[QHooks::AddQObject] = reinterpret_cast<quintptr>(&qt_addQObject);
    qtHookData[QHooks::RemoveQObject] = reinterpret_cast<quintptr>(&qt_removeQObject);

    // warmup
    QQmlComponent component(&engine);
    component.setData("import QtQuick 2.0; import QtQuick.Controls 1.3; Button {}", QUrl());
    delete component.create();
}

void tst_ObjectCount::cleanup()
{
    qtHookData[QHooks::AddQObject] = 0;
    qtHookData[QHooks::RemoveQObject] = 0;
}

static void printItems(const QList<QQuickItem *> &items)
{
    std::cout << "RESULT tst_ObjectCount::" << QTest::currentTestFunction() << "():\"" << QTest::currentDataTag() << "\":" << std::endl;
    std::cout << "     QQuickItems: " << items.count() << " (total of QObjects: " << qt_qobjects->count() << ")" << std::endl;

    if (qt_verbose) {
        foreach (QObject *object, *qt_qobjects)
            qInfo() << "\t" << object;
    }
}

void tst_ObjectCount::controls()
{
    QFETCH(QByteArray, data);

    QQmlComponent component(&engine);

    qt_qobjects->clear();

    component.setData(data, QUrl());
    QScopedPointer<QObject> object(component.create());
    QVERIFY2(object.data(), qPrintable(component.errorString()));

    QList<QQuickItem *> items;
    foreach (QObject *object, *qt_qobjects()) {
        QQuickItem *item = qobject_cast<QQuickItem *>(object);
        if (item)
            items += item;
    }
    printItems(items);
}

void tst_ObjectCount::controls_data()
{
    QTest::addColumn<QByteArray>("data");

    QTest::newRow("ApplicationWindow")
            << QByteArray("import QtQuick.Controls 1.3; ApplicationWindow { }");
    QTest::newRow("BusyIndicator")
            << QByteArray("import QtQuick.Controls 1.3; BusyIndicator { }");
    QTest::newRow("Button")
            << QByteArray("import QtQuick.Controls 1.3; Button { }");
    QTest::newRow("CheckBox")
            << QByteArray("import QtQuick.Controls 1.3; CheckBox { }");
    QTest::newRow("Dial")
            << QByteArray("import QtQuick.Extras 1.3; Dial { }");
    QTest::newRow("GroupBox")
            << QByteArray("import QtQuick.Controls 1.3; GroupBox { }");
    QTest::newRow("Label")
            << QByteArray("import QtQuick.Controls 1.3; Label { }");
    QTest::newRow("ProgressBar")
            << QByteArray("import QtQuick.Controls 1.3; ProgressBar { }");
    QTest::newRow("RadioButton")
            << QByteArray("import QtQuick.Controls 1.3; RadioButton { }");
    QTest::newRow("ScrollView")
            << QByteArray("import QtQuick.Controls 1.3; ScrollView { }");
    QTest::newRow("Slider")
            << QByteArray("import QtQuick.Controls 1.3; Slider { }");
    QTest::newRow("SpinBox")
            << QByteArray("import QtQuick.Controls 1.3; SpinBox { }");
    QTest::newRow("StackView")
            << QByteArray("import QtQuick.Controls 1.3; StackView { }");
    QTest::newRow("Switch")
            << QByteArray("import QtQuick.Controls 1.3; Switch { }");
    QTest::newRow("TabView")
            << QByteArray("import QtQuick.Controls 1.3; TabView { }");
    QTest::newRow("TextArea")
            << QByteArray("import QtQuick.Controls 1.3; TextArea { }");
    QTest::newRow("TextField")
            << QByteArray("import QtQuick.Controls 1.3; TextField { }");
    QTest::newRow("ToolBar")
            << QByteArray("import QtQuick.Controls 1.3; ToolBar { }");
    QTest::newRow("ToolButton")
            << QByteArray("import QtQuick.Controls 1.3; ToolButton { }");
    QTest::newRow("Tumbler")
            << QByteArray("import QtQuick.Extras 1.3; Tumbler { }");
}

QTEST_MAIN(tst_ObjectCount)

#include "tst_objectcount.moc"
