/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
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** This file is part of the QtDeclarative module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL21$
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** following information to ensure the GNU Lesser General Public License
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****************************************************************************/

#ifndef QDECLARATIVEVIEW_H
#define QDECLARATIVEVIEW_H

#include <QtCore/qdatetime.h>
#include <QtCore/qurl.h>
#include <QtWidgets/qgraphicssceneevent.h>
#include <QtWidgets/qgraphicsview.h>
#include <QtWidgets/qwidget.h>
#include <QtDeclarative/qdeclarativedebug.h>

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QGraphicsObject;
class QDeclarativeEngine;
class QDeclarativeContext;
class QDeclarativeError;

class QDeclarativeViewPrivate;
class Q_DECLARATIVE_EXPORT QDeclarativeView : public QGraphicsView
{
    Q_OBJECT
    Q_PROPERTY(ResizeMode resizeMode READ resizeMode WRITE setResizeMode)
    Q_PROPERTY(Status status READ status NOTIFY statusChanged)
    Q_PROPERTY(QUrl source READ source WRITE setSource DESIGNABLE true)
    Q_ENUMS(ResizeMode Status)
public:
    explicit QDeclarativeView(QWidget *parent = Q_NULLPTR);
    explicit QDeclarativeView(const QUrl &source, QWidget *parent = Q_NULLPTR);
    virtual ~QDeclarativeView();

    QUrl source() const;
    void setSource(const QUrl&);

    QDeclarativeEngine* engine() const;
    QDeclarativeContext* rootContext() const;

    QGraphicsObject *rootObject() const;

    enum ResizeMode { SizeViewToRootObject, SizeRootObjectToView };
    ResizeMode resizeMode() const;
    void setResizeMode(ResizeMode);

    enum Status { Null, Ready, Loading, Error };
    Status status() const;

    QList<QDeclarativeError> errors() const;

    QSize sizeHint() const;
    QSize initialSize() const;

Q_SIGNALS:
    void sceneResized(QSize size); // ???
    void statusChanged(QDeclarativeView::Status);

private Q_SLOTS:
    void continueExecute();

protected:
    virtual void resizeEvent(QResizeEvent *);
    virtual void paintEvent(QPaintEvent *event);
    virtual void timerEvent(QTimerEvent*);
    virtual void setRootObject(QObject *obj);
    virtual bool eventFilter(QObject *watched, QEvent *e);

private:
    Q_DISABLE_COPY(QDeclarativeView)
    Q_DECLARE_PRIVATE(QDeclarativeView)
};

QT_END_NAMESPACE

#endif // QDECLARATIVEVIEW_H