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#include <qtest.h>

#include <QtTest/QSignalSpy>

#include <QStandardItemModel>

#include <QtDeclarative/qdeclarativeengine.h>

#include <QtDeclarative/qdeclarativecomponent.h>

#include <QtDeclarative/qdeclarativecontext.h>

#include <QtDeclarative/qdeclarativeexpression.h>

#include <QtDeclarative/qdeclarativeview.h>

#include <private/qdeclarativelistview_p.h>

#include <private/qdeclarativetext_p.h>

#include <private/qdeclarativevisualitemmodel_p.h>

#include <private/qdeclarativevaluetype_p.h>

#include <math.h>

static void initStandardTreeModel(QStandardItemModel *model)

{

    QStandardItem *item;

    item = new QStandardItem(QLatin1String("Row 1 Item"));

    model->insertRow(0, item);

    item = new QStandardItem(QLatin1String("Row 2 Item"));

    item->setCheckable(true);

    model->insertRow(1, item);

    QStandardItem *childItem = new QStandardItem(QLatin1String("Row 2 Child Item"));

    item->setChild(0, childItem);

    item = new QStandardItem(QLatin1String("Row 3 Item"));

    item->setIcon(QIcon());

    model->insertRow(2, item);

}

class tst_qdeclarativevisualdatamodel : public QObject

{

    Q_OBJECT

public:

    tst_qdeclarativevisualdatamodel();

private slots:

    void rootIndex();

    void objectListModel();

private:

    QDeclarativeEngine engine;

    template<typename T>

    T *findItem(QGraphicsObject *parent, const QString &objectName, int index);

};

class DataObject : public QObject

{

    Q_OBJECT

    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)

    Q_PROPERTY(QString color READ color WRITE setColor NOTIFY colorChanged)

public:

    DataObject(QObject *parent=0) : QObject(parent) {}

    DataObject(const QString &name, const QString &color, QObject *parent=0)

        : QObject(parent), m_name(name), m_color(color) { }

    QString name() const { return m_name; }

    void setName(const QString &name) {

        if (name != m_name) {

            m_name = name;

            emit nameChanged();

        }

    }

    QString color() const { return m_color; }

    void setColor(const QString &color) {

        if (color != m_color) {

            m_color = color;

            emit colorChanged();

        }

    }

signals:

    void nameChanged();

    void colorChanged();

private:

    QString m_name;

    QString m_color;

};

tst_qdeclarativevisualdatamodel::tst_qdeclarativevisualdatamodel()

{

}

void tst_qdeclarativevisualdatamodel::rootIndex()

{

    QDeclarativeEngine engine;

    QDeclarativeComponent c(&engine, QUrl::fromLocalFile(SRCDIR "/data/visualdatamodel.qml"));

    QStandardItemModel model;

    initStandardTreeModel(&model);

    engine.rootContext()->setContextProperty("myModel", &model);

    QDeclarativeVisualDataModel *obj = qobject_cast<QDeclarativeVisualDataModel*>(c.create());

    QVERIFY(obj != 0);

    QMetaObject::invokeMethod(obj, "setRoot");

    QVERIFY(qvariant_cast<QModelIndex>(obj->rootIndex()) == model.index(0,0));

    QMetaObject::invokeMethod(obj, "setRootToParent");

    QVERIFY(qvariant_cast<QModelIndex>(obj->rootIndex()) == QModelIndex());

    delete obj;

}

void tst_qdeclarativevisualdatamodel::objectListModel()

{

    QDeclarativeView view;

    QList<QObject*> dataList;

    dataList.append(new DataObject("Item 1", "red"));

    dataList.append(new DataObject("Item 2", "green"));

    dataList.append(new DataObject("Item 3", "blue"));

    dataList.append(new DataObject("Item 4", "yellow"));

    QDeclarativeContext *ctxt = view.rootContext();

    ctxt->setContextProperty("myModel", QVariant::fromValue(dataList));

    view.setSource(QUrl::fromLocalFile(SRCDIR "/data/objectlist.qml"));

    QDeclarativeListView *listview = qobject_cast<QDeclarativeListView*>(view.rootObject());

    QVERIFY(listview != 0);

    QDeclarativeItem *viewport = listview->viewport();

    QVERIFY(viewport != 0);

    QDeclarativeText *name = findItem<QDeclarativeText>(viewport, "name", 0);

    QCOMPARE(name->text(), QString("Item 1"));

    dataList[0]->setProperty("name", QLatin1String("Changed"));

    QCOMPARE(name->text(), QString("Changed"));

}

template<typename T>

T *tst_qdeclarativevisualdatamodel::findItem(QGraphicsObject *parent, const QString &objectName, int index)

{

    const QMetaObject &mo = T::staticMetaObject;

    //qDebug() << parent->childItems().count() << "children";

    for (int i = 0; i < parent->childItems().count(); ++i) {

        QDeclarativeItem *item = qobject_cast<QDeclarativeItem*>(parent->childItems().at(i));

        if(!item)

            continue;

        //qDebug() << "try" << item;

        if (mo.cast(item) && (objectName.isEmpty() || item->objectName() == objectName)) {

            if (index != -1) {

                QDeclarativeExpression e(qmlContext(item), item, "index");

                if (e.evaluate().toInt() == index)

                    return static_cast<T*>(item);

            } else {

                return static_cast<T*>(item);

            }

        }

        item = findItem<T>(item, objectName, index);

        if (item)

        return static_cast<T*>(item);

    }

    return 0;

}

QTEST_MAIN(tst_qdeclarativevisualdatamodel)

#include "tst_qdeclarativevisualdatamodel.moc"