/****************************************************************************
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
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****************************************************************************/

#ifndef QQUICKLOADER_P_H
#define QQUICKLOADER_P_H

#include "qquickimplicitsizeitem_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QQuickLoaderPrivate;
class Q_AUTOTEST_EXPORT QQuickLoader : public QQuickImplicitSizeItem
{
    Q_OBJECT
    Q_ENUMS(Status)

    Q_PROPERTY(bool active READ active WRITE setActive NOTIFY activeChanged)
    Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
    Q_PROPERTY(QQmlComponent *sourceComponent READ sourceComponent WRITE setSourceComponent RESET resetSourceComponent NOTIFY sourceComponentChanged)
    Q_PROPERTY(QObject *item READ item NOTIFY itemChanged)
    Q_PROPERTY(Status status READ status NOTIFY statusChanged)
    Q_PROPERTY(qreal progress READ progress NOTIFY progressChanged)
    Q_PROPERTY(bool asynchronous READ asynchronous WRITE setAsynchronous NOTIFY asynchronousChanged)

public:
    QQuickLoader(QQuickItem *parent = 0);
    virtual ~QQuickLoader();

    bool active() const;
    void setActive(bool newVal);

    Q_INVOKABLE void setSource(QQmlV8Function *);

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

    QQmlComponent *sourceComponent() const;
    void setSourceComponent(QQmlComponent *);
    void resetSourceComponent();

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

    bool asynchronous() const;
    void setAsynchronous(bool a);

    QObject *item() const;

Q_SIGNALS:
    void itemChanged();
    void activeChanged();
    void sourceChanged();
    void sourceComponentChanged();
    void statusChanged();
    void progressChanged();
    void loaded();
    void asynchronousChanged();

protected:
    void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry);
    void componentComplete();

private:
    void setSource(const QUrl &sourceUrl, bool needsClear);
    void loadFromSource();
    void loadFromSourceComponent();
    Q_DISABLE_COPY(QQuickLoader)
    Q_DECLARE_PRIVATE(QQuickLoader)
    Q_PRIVATE_SLOT(d_func(), void _q_sourceLoaded())
    Q_PRIVATE_SLOT(d_func(), void _q_updateSize())
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QQuickLoader)

QT_END_HEADER

#endif // QQUICKLOADER_P_H
