/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
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** use the contact form at http://qt.digia.com/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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****************************************************************************/

#ifndef QSTACKEDLAYOUT_H
#define QSTACKEDLAYOUT_H

#include <QtWidgets/qlayout.h>

QT_BEGIN_NAMESPACE


class QStackedLayoutPrivate;

class Q_WIDGETS_EXPORT QStackedLayout : public QLayout
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QStackedLayout)
    Q_ENUMS(StackingMode)
    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentChanged)
    Q_PROPERTY(StackingMode stackingMode READ stackingMode WRITE setStackingMode)
    QDOC_PROPERTY(int count READ count)

public:
    enum StackingMode {
        StackOne,
        StackAll
    };

    QStackedLayout();
    explicit QStackedLayout(QWidget *parent);
    explicit QStackedLayout(QLayout *parentLayout);
    ~QStackedLayout();

    int addWidget(QWidget *w);
    int insertWidget(int index, QWidget *w);

    QWidget *currentWidget() const;
    int currentIndex() const;
#ifdef Q_NO_USING_KEYWORD
    inline QWidget *widget() { return QLayout::widget(); }
#else
    using QLayout::widget;
#endif
    QWidget *widget(int) const;
    int count() const;

    StackingMode stackingMode() const;
    void setStackingMode(StackingMode stackingMode);

    // abstract virtual functions:
    void addItem(QLayoutItem *item);
    QSize sizeHint() const;
    QSize minimumSize() const;
    QLayoutItem *itemAt(int) const;
    QLayoutItem *takeAt(int);
    void setGeometry(const QRect &rect);
    bool hasHeightForWidth() const;
    int heightForWidth(int width) const;

Q_SIGNALS:
    void widgetRemoved(int index);
    void currentChanged(int index);

public Q_SLOTS:
    void setCurrentIndex(int index);
    void setCurrentWidget(QWidget *w);

private:
    Q_DISABLE_COPY(QStackedLayout)
};

QT_END_NAMESPACE

#endif // QSTACKEDLAYOUT_H
