/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL3$
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** packaging of this file. Please review the following information to
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
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****************************************************************************/

#ifndef QQUICKPOPUPWINDOW_H
#define QQUICKPOPUPWINDOW_H

#include <QtCore/QPointer>
#include <QtQuick/qquickitem.h>
#include <QtQuick/qquickwindow.h>

QT_BEGIN_NAMESPACE

class QQuickPopupWindow : public QQuickWindow
{
    Q_OBJECT
    Q_PROPERTY(QQuickItem *popupContentItem READ popupContentItem WRITE setPopupContentItem)
    Q_CLASSINFO("DefaultProperty", "popupContentItem")
    Q_PROPERTY(QQuickItem *parentItem READ parentItem WRITE setParentItem)

public:
    QQuickPopupWindow();

    QQuickItem *popupContentItem() const { return m_contentItem; }
    void setPopupContentItem(QQuickItem *popupContentItem);

    QQuickItem *parentItem() const { return m_parentItem; }
    virtual void setParentItem(QQuickItem *);

public Q_SLOTS:
    virtual void show();
    void dismissPopup();

Q_SIGNALS:
    void popupDismissed();
    void geometryChanged();

protected:
    void mousePressEvent(QMouseEvent *) Q_DECL_OVERRIDE;
    void mouseReleaseEvent(QMouseEvent *) Q_DECL_OVERRIDE;
    void mouseMoveEvent(QMouseEvent *) Q_DECL_OVERRIDE;
    void exposeEvent(QExposeEvent *) Q_DECL_OVERRIDE;
    void hideEvent(QHideEvent *) Q_DECL_OVERRIDE;
    bool event(QEvent *) Q_DECL_OVERRIDE;
    virtual bool shouldForwardEventAfterDismiss(QMouseEvent *) const;

protected Q_SLOTS:
    void updateSize();
    void applicationStateChanged(Qt::ApplicationState state);

private:
    void forwardEventToTransientParent(QMouseEvent *);

    QQuickItem *m_parentItem;
    QPointer<QQuickItem> m_contentItem;
    bool m_mouseMoved;
    bool m_needsActivatedEvent;
    bool m_dismissed;
    bool m_pressed;
};

QT_END_NAMESPACE

#endif // QQUICKPOPUPWINDOW_H