/****************************************************************************
**
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** 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
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** 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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** $QT_END_LICENSE$
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****************************************************************************/

#ifndef QMDISUBWINDOW_H
#define QMDISUBWINDOW_H

#include <QtWidgets/qwidget.h>

QT_BEGIN_NAMESPACE


#ifndef QT_NO_MDIAREA

class QMenu;
class QMdiArea;

namespace QMdi { class ControlContainer; }
class QMdiSubWindowPrivate;
class Q_WIDGETS_EXPORT QMdiSubWindow : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(int keyboardSingleStep READ keyboardSingleStep WRITE setKeyboardSingleStep)
    Q_PROPERTY(int keyboardPageStep READ keyboardPageStep WRITE setKeyboardPageStep)
public:
    enum SubWindowOption {
        AllowOutsideAreaHorizontally = 0x1, // internal
        AllowOutsideAreaVertically = 0x2, // internal
        RubberBandResize = 0x4,
        RubberBandMove = 0x8
    };
    Q_DECLARE_FLAGS(SubWindowOptions, SubWindowOption)

    QMdiSubWindow(QWidget *parent = 0, Qt::WindowFlags flags = 0);
    ~QMdiSubWindow();

    QSize sizeHint() const Q_DECL_OVERRIDE;
    QSize minimumSizeHint() const Q_DECL_OVERRIDE;

    void setWidget(QWidget *widget);
    QWidget *widget() const;

    QWidget *maximizedButtonsWidget() const; // internal
    QWidget *maximizedSystemMenuIconWidget() const; // internal

    bool isShaded() const;

    void setOption(SubWindowOption option, bool on = true);
    bool testOption(SubWindowOption) const;

    void setKeyboardSingleStep(int step);
    int keyboardSingleStep() const;

    void setKeyboardPageStep(int step);
    int keyboardPageStep() const;

#ifndef QT_NO_MENU
    void setSystemMenu(QMenu *systemMenu);
    QMenu *systemMenu() const;
#endif

    QMdiArea *mdiArea() const;

Q_SIGNALS:
    void windowStateChanged(Qt::WindowStates oldState, Qt::WindowStates newState);
    void aboutToActivate();

public Q_SLOTS:
#ifndef QT_NO_MENU
    void showSystemMenu();
#endif
    void showShaded();

protected:
    bool eventFilter(QObject *object, QEvent *event) Q_DECL_OVERRIDE;
    bool event(QEvent *event) Q_DECL_OVERRIDE;
    void showEvent(QShowEvent *showEvent) Q_DECL_OVERRIDE;
    void hideEvent(QHideEvent *hideEvent) Q_DECL_OVERRIDE;
    void changeEvent(QEvent *changeEvent) Q_DECL_OVERRIDE;
    void closeEvent(QCloseEvent *closeEvent) Q_DECL_OVERRIDE;
    void leaveEvent(QEvent *leaveEvent) Q_DECL_OVERRIDE;
    void resizeEvent(QResizeEvent *resizeEvent) Q_DECL_OVERRIDE;
    void timerEvent(QTimerEvent *timerEvent) Q_DECL_OVERRIDE;
    void moveEvent(QMoveEvent *moveEvent) Q_DECL_OVERRIDE;
    void paintEvent(QPaintEvent *paintEvent) Q_DECL_OVERRIDE;
    void mousePressEvent(QMouseEvent *mouseEvent) Q_DECL_OVERRIDE;
    void mouseDoubleClickEvent(QMouseEvent *mouseEvent) Q_DECL_OVERRIDE;
    void mouseReleaseEvent(QMouseEvent *mouseEvent) Q_DECL_OVERRIDE;
    void mouseMoveEvent(QMouseEvent *mouseEvent) Q_DECL_OVERRIDE;
    void keyPressEvent(QKeyEvent *keyEvent) Q_DECL_OVERRIDE;
#ifndef QT_NO_CONTEXTMENU
    void contextMenuEvent(QContextMenuEvent *contextMenuEvent) Q_DECL_OVERRIDE;
#endif
    void focusInEvent(QFocusEvent *focusInEvent) Q_DECL_OVERRIDE;
    void focusOutEvent(QFocusEvent *focusOutEvent) Q_DECL_OVERRIDE;
    void childEvent(QChildEvent *childEvent) Q_DECL_OVERRIDE;

private:
    Q_DISABLE_COPY(QMdiSubWindow)
    Q_DECLARE_PRIVATE(QMdiSubWindow)
    Q_PRIVATE_SLOT(d_func(), void _q_updateStaysOnTopHint())
    Q_PRIVATE_SLOT(d_func(), void _q_enterInteractiveMode())
    Q_PRIVATE_SLOT(d_func(), void _q_processFocusChanged(QWidget *, QWidget *))
    friend class QMdiAreaPrivate;
#ifndef QT_NO_TABBAR
    friend class QMdiAreaTabBar;
#endif
    friend class QMdi::ControlContainer;
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QMdiSubWindow::SubWindowOptions)

QT_END_NAMESPACE

#endif // QT_NO_MDIAREA

#endif // QMDISUBWINDOW_H