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#include <qtest.h>
#include <QtTest/QSignalSpy>
#include <QtDeclarative/qdeclarativeengine.h>
#include <QtDeclarative/qdeclarativecomponent.h>
#include <private/qdeclarativeflickable_p.h>
#include <private/qdeclarativevaluetype_p.h>
#include <QtGui/qgraphicswidget.h>
#include <math.h>

#ifdef Q_OS_SYMBIAN
// In Symbian OS test data is located in applications private dir
#define SRCDIR "."
#endif

class tst_qdeclarativeflickable : public QObject
{
    Q_OBJECT
public:
    tst_qdeclarativeflickable();

private slots:
    void create();
    void horizontalViewportSize();
    void verticalViewportSize();
    void properties();
    void boundsBehavior();
    void maximumFlickVelocity();
    void flickDeceleration();
    void pressDelay();
    void flickableDirection();
    void qgraphicswidget();

private:
    QDeclarativeEngine engine;

    template<typename T>
    T *findItem(QGraphicsObject *parent, const QString &objectName);
};

tst_qdeclarativeflickable::tst_qdeclarativeflickable()
{
}

void tst_qdeclarativeflickable::create()
{
    QDeclarativeEngine engine;
    QDeclarativeComponent c(&engine, QUrl::fromLocalFile(SRCDIR "/data/flickable01.qml"));
    QDeclarativeFlickable *obj = qobject_cast<QDeclarativeFlickable*>(c.create());

    QVERIFY(obj != 0);
    QCOMPARE(obj->isAtXBeginning(), true);
    QCOMPARE(obj->isAtXEnd(), false);
    QCOMPARE(obj->isAtYBeginning(), true);
    QCOMPARE(obj->isAtYEnd(), false);
    QCOMPARE(obj->contentX(), 0.);
    QCOMPARE(obj->contentY(), 0.);

    QCOMPARE(obj->horizontalVelocity(), 0.);
    QCOMPARE(obj->verticalVelocity(), 0.);

    QCOMPARE(obj->isInteractive(), true);
    QCOMPARE(obj->boundsBehavior(), QDeclarativeFlickable::DragAndOvershootBounds);
    QCOMPARE(obj->pressDelay(), 0);
    QCOMPARE(obj->maximumFlickVelocity(), 2000.);

    delete obj;
}

void tst_qdeclarativeflickable::horizontalViewportSize()
{
    QDeclarativeEngine engine;
    QDeclarativeComponent c(&engine, QUrl::fromLocalFile(SRCDIR "/data/flickable02.qml"));
    QDeclarativeFlickable *obj = qobject_cast<QDeclarativeFlickable*>(c.create());

    QVERIFY(obj != 0);
    QCOMPARE(obj->contentWidth(), 800.);
    QCOMPARE(obj->contentHeight(), 300.);
    QCOMPARE(obj->isAtXBeginning(), true);
    QCOMPARE(obj->isAtXEnd(), false);
    QCOMPARE(obj->isAtYBeginning(), true);
    QCOMPARE(obj->isAtYEnd(), false);

    delete obj;
}

void tst_qdeclarativeflickable::verticalViewportSize()
{
    QDeclarativeEngine engine;
    QDeclarativeComponent c(&engine, QUrl::fromLocalFile(SRCDIR "/data/flickable03.qml"));
    QDeclarativeFlickable *obj = qobject_cast<QDeclarativeFlickable*>(c.create());

    QVERIFY(obj != 0);
    QCOMPARE(obj->contentWidth(), 200.);
    QCOMPARE(obj->contentHeight(), 1200.);
    QCOMPARE(obj->isAtXBeginning(), true);
    QCOMPARE(obj->isAtXEnd(), false);
    QCOMPARE(obj->isAtYBeginning(), true);
    QCOMPARE(obj->isAtYEnd(), false);

    delete obj;
}

void tst_qdeclarativeflickable::properties()
{
    QDeclarativeEngine engine;
    QDeclarativeComponent c(&engine, QUrl::fromLocalFile(SRCDIR "/data/flickable04.qml"));
    QDeclarativeFlickable *obj = qobject_cast<QDeclarativeFlickable*>(c.create());

    QVERIFY(obj != 0);
    QCOMPARE(obj->isInteractive(), false);
    QCOMPARE(obj->boundsBehavior(), QDeclarativeFlickable::StopAtBounds);
    QCOMPARE(obj->pressDelay(), 200);
    QCOMPARE(obj->maximumFlickVelocity(), 2000.);

    QVERIFY(obj->property("ok").toBool() == false);
    QMetaObject::invokeMethod(obj, "check");
    QVERIFY(obj->property("ok").toBool() == true);

    delete obj;
}

void tst_qdeclarativeflickable::boundsBehavior()
{
    QDeclarativeComponent component(&engine);
    component.setData("import QtQuick 1.0; Flickable { boundsBehavior: Flickable.StopAtBounds }", QUrl::fromLocalFile(""));
    QDeclarativeFlickable *flickable = qobject_cast<QDeclarativeFlickable*>(component.create());
    QSignalSpy spy(flickable, SIGNAL(boundsBehaviorChanged()));

    QVERIFY(flickable);
    QVERIFY(flickable->boundsBehavior() == QDeclarativeFlickable::StopAtBounds);

    flickable->setBoundsBehavior(QDeclarativeFlickable::DragAndOvershootBounds);
    QVERIFY(flickable->boundsBehavior() == QDeclarativeFlickable::DragAndOvershootBounds);
    QCOMPARE(spy.count(),1);
    flickable->setBoundsBehavior(QDeclarativeFlickable::DragAndOvershootBounds);
    QCOMPARE(spy.count(),1);

    flickable->setBoundsBehavior(QDeclarativeFlickable::DragOverBounds);
    QVERIFY(flickable->boundsBehavior() == QDeclarativeFlickable::DragOverBounds);
    QCOMPARE(spy.count(),2);
    flickable->setBoundsBehavior(QDeclarativeFlickable::DragOverBounds);
    QCOMPARE(spy.count(),2);

    flickable->setBoundsBehavior(QDeclarativeFlickable::StopAtBounds);
    QVERIFY(flickable->boundsBehavior() == QDeclarativeFlickable::StopAtBounds);
    QCOMPARE(spy.count(),3);
    flickable->setBoundsBehavior(QDeclarativeFlickable::StopAtBounds);
    QCOMPARE(spy.count(),3);
}

void tst_qdeclarativeflickable::maximumFlickVelocity()
{
    QDeclarativeComponent component(&engine);
    component.setData("import QtQuick 1.0; Flickable { maximumFlickVelocity: 1.0; }", QUrl::fromLocalFile(""));
    QDeclarativeFlickable *flickable = qobject_cast<QDeclarativeFlickable*>(component.create());
    QSignalSpy spy(flickable, SIGNAL(maximumFlickVelocityChanged()));

    QVERIFY(flickable);
    QCOMPARE(flickable->maximumFlickVelocity(), 1.0);

    flickable->setMaximumFlickVelocity(2.0);
    QCOMPARE(flickable->maximumFlickVelocity(), 2.0);
    QCOMPARE(spy.count(),1);
    flickable->setMaximumFlickVelocity(2.0);
    QCOMPARE(spy.count(),1);
}

void tst_qdeclarativeflickable::flickDeceleration()
{
    QDeclarativeComponent component(&engine);
    component.setData("import QtQuick 1.0; Flickable { flickDeceleration: 1.0; }", QUrl::fromLocalFile(""));
    QDeclarativeFlickable *flickable = qobject_cast<QDeclarativeFlickable*>(component.create());
    QSignalSpy spy(flickable, SIGNAL(flickDecelerationChanged()));

    QVERIFY(flickable);
    QCOMPARE(flickable->flickDeceleration(), 1.0);

    flickable->setFlickDeceleration(2.0);
    QCOMPARE(flickable->flickDeceleration(), 2.0);
    QCOMPARE(spy.count(),1);
    flickable->setFlickDeceleration(2.0);
    QCOMPARE(spy.count(),1);
}

void tst_qdeclarativeflickable::pressDelay()
{
    QDeclarativeComponent component(&engine);
    component.setData("import QtQuick 1.0; Flickable { pressDelay: 100; }", QUrl::fromLocalFile(""));
    QDeclarativeFlickable *flickable = qobject_cast<QDeclarativeFlickable*>(component.create());
    QSignalSpy spy(flickable, SIGNAL(pressDelayChanged()));

    QVERIFY(flickable);
    QCOMPARE(flickable->pressDelay(), 100);

    flickable->setPressDelay(200);
    QCOMPARE(flickable->pressDelay(), 200);
    QCOMPARE(spy.count(),1);
    flickable->setPressDelay(200);
    QCOMPARE(spy.count(),1);
}

void tst_qdeclarativeflickable::flickableDirection()
{
    QDeclarativeComponent component(&engine);
    component.setData("import QtQuick 1.0; Flickable { flickableDirection: Flickable.VerticalFlick; }", QUrl::fromLocalFile(""));
    QDeclarativeFlickable *flickable = qobject_cast<QDeclarativeFlickable*>(component.create());
    QSignalSpy spy(flickable, SIGNAL(flickableDirectionChanged()));

    QVERIFY(flickable);
    QCOMPARE(flickable->flickableDirection(), QDeclarativeFlickable::VerticalFlick);

    flickable->setFlickableDirection(QDeclarativeFlickable::HorizontalAndVerticalFlick);
    QCOMPARE(flickable->flickableDirection(), QDeclarativeFlickable::HorizontalAndVerticalFlick);
    QCOMPARE(spy.count(),1);

    flickable->setFlickableDirection(QDeclarativeFlickable::AutoFlickDirection);
    QCOMPARE(flickable->flickableDirection(), QDeclarativeFlickable::AutoFlickDirection);
    QCOMPARE(spy.count(),2);

    flickable->setFlickableDirection(QDeclarativeFlickable::HorizontalFlick);
    QCOMPARE(flickable->flickableDirection(), QDeclarativeFlickable::HorizontalFlick);
    QCOMPARE(spy.count(),3);

    flickable->setFlickableDirection(QDeclarativeFlickable::HorizontalFlick);
    QCOMPARE(flickable->flickableDirection(), QDeclarativeFlickable::HorizontalFlick);
    QCOMPARE(spy.count(),3);
}

void tst_qdeclarativeflickable::qgraphicswidget()
{
    QDeclarativeEngine engine;
    QDeclarativeComponent c(&engine, QUrl::fromLocalFile(SRCDIR "/data/flickableqgraphicswidget.qml"));
    QDeclarativeFlickable *flickable = qobject_cast<QDeclarativeFlickable*>(c.create());

    QVERIFY(flickable != 0);
    QGraphicsWidget *widget = findItem<QGraphicsWidget>(flickable->contentItem(), "widget1");
    QVERIFY(widget);
}

template<typename T>
T *tst_qdeclarativeflickable::findItem(QGraphicsObject *parent, const QString &objectName)
{
    const QMetaObject &mo = T::staticMetaObject;
    //qDebug() << parent->childItems().count() << "children";
    for (int i = 0; i < parent->childItems().count(); ++i) {
        QGraphicsObject *item = qobject_cast<QGraphicsObject*>(parent->childItems().at(i));
        if(!item)
            continue;
        //qDebug() << "try" << item;
        if (mo.cast(item) && (objectName.isEmpty() || item->objectName() == objectName)) {
            return static_cast<T*>(item);
        }
        item = findItem<T>(item, objectName);
        if (item)
            return static_cast<T*>(item);
    }

    return 0;
}

QTEST_MAIN(tst_qdeclarativeflickable)

#include "tst_qdeclarativeflickable.moc"