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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** 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 packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/


#include <QtTest/QtTest>
#include <QtGui/QGuiApplication>
#include <QtGui/QWindow>
#include <QDebug>

class tst_QGuiApplication: public QObject
{
    Q_OBJECT

private slots:
    void focusObject();
    void allWindows();
    void topLevelWindows();
};

class DummyWindow : public QWindow
{
public:
    DummyWindow() : m_focusObject(0) {}

    virtual QObject *focusObject() const
    {
        return m_focusObject;
    }

    void setFocusObject(QObject *object)
    {
        m_focusObject = object;
        emit focusObjectChanged(object);
    }

    QObject *m_focusObject;
};


void tst_QGuiApplication::focusObject()
{
    int argc = 0;
    QGuiApplication app(argc, 0);

    QObject obj1, obj2, obj3;
    DummyWindow window1;
    DummyWindow window2;
    window1.show();

    QSignalSpy spy(&app, SIGNAL(focusObjectChanged(QObject *)));


    // verify active window focus propagates to qguiapplication
    QTest::qWaitForWindowShown(&window1);
    window1.requestActivateWindow();
    QTRY_COMPARE(app.focusWindow(), &window1);

    window1.setFocusObject(&obj1);
    QCOMPARE(app.focusObject(), &obj1);
    QCOMPARE(spy.count(), 1);

    spy.clear();
    window1.setFocusObject(&obj2);
    QCOMPARE(app.focusObject(), &obj2);
    QCOMPARE(spy.count(), 1);

    spy.clear();
    window2.setFocusObject(&obj3);
    QCOMPARE(app.focusObject(), &obj2); // not yet changed
    window2.show();
    QTest::qWaitForWindowShown(&window2);
    QTRY_COMPARE(app.focusWindow(), &window2);
    QCOMPARE(app.focusObject(), &obj3);
    QCOMPARE(spy.count(), 1);

    // focus change on unfocused window does not show
    spy.clear();
    window1.setFocusObject(&obj1);
    QCOMPARE(spy.count(), 0);
    QCOMPARE(app.focusObject(), &obj3);
}

void tst_QGuiApplication::allWindows()
{
    int argc = 0;
    QGuiApplication app(argc, 0);
    QWindow *window1 = new QWindow;
    QWindow *window2 = new QWindow(window1);
    QVERIFY(app.allWindows().contains(window1));
    QVERIFY(app.allWindows().contains(window2));
    QCOMPARE(app.allWindows().count(), 2);
    delete window1;
    window1 = 0;
    window2 = 0;
    QVERIFY(!app.allWindows().contains(window2));
    QVERIFY(!app.allWindows().contains(window1));
    QCOMPARE(app.allWindows().count(), 0);
}

void tst_QGuiApplication::topLevelWindows()
{
    int argc = 0;
    QGuiApplication app(argc, 0);
    QWindow *window1 = new QWindow;
    QWindow *window2 = new QWindow(window1);
    QVERIFY(app.topLevelWindows().contains(window1));
    QVERIFY(!app.topLevelWindows().contains(window2));
    QCOMPARE(app.topLevelWindows().count(), 1);
    delete window1;
    window1 = 0;
    window2 = 0;
    QVERIFY(!app.topLevelWindows().contains(window2));
    QVERIFY(!app.topLevelWindows().contains(window1));
    QCOMPARE(app.topLevelWindows().count(), 0);
}

QTEST_APPLESS_MAIN(tst_QGuiApplication)
#include "tst_qguiapplication.moc"