/****************************************************************************
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** Copyright (C) 2015 The Qt Company Ltd.
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** 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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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
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****************************************************************************/

#ifndef QMENU_H
#define QMENU_H

#include <QtGui/qwidget.h>
#include <QtCore/qstring.h>
#include <QtGui/qicon.h>
#include <QtGui/qaction.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE


#ifndef QT_NO_MENU

class QMenuPrivate;
class QStyleOptionMenuItem;

class Q_GUI_EXPORT QMenu : public QWidget
{
private:
    Q_OBJECT
    Q_DECLARE_PRIVATE(QMenu)

    Q_PROPERTY(bool tearOffEnabled READ isTearOffEnabled WRITE setTearOffEnabled)
    Q_PROPERTY(QString title READ title WRITE setTitle)
    Q_PROPERTY(QIcon icon READ icon WRITE setIcon)
    Q_PROPERTY(bool separatorsCollapsible READ separatorsCollapsible WRITE setSeparatorsCollapsible)

public:
    explicit QMenu(QWidget *parent = Q_NULLPTR);
    explicit QMenu(const QString &title, QWidget *parent = Q_NULLPTR);
    ~QMenu();

#ifdef Q_NO_USING_KEYWORD
    inline void addAction(QAction *action) { QWidget::addAction(action); }
#else
    using QWidget::addAction;
#endif
    QAction *addAction(const QString &text);
    QAction *addAction(const QIcon &icon, const QString &text);
    QAction *addAction(const QString &text, const QObject *receiver, const char* member, const QKeySequence &shortcut = QKeySequence());
    QAction *addAction(const QIcon &icon, const QString &text, const QObject *receiver, const char* member, const QKeySequence &shortcut = QKeySequence());

    QAction *addMenu(QMenu *menu);
    QMenu *addMenu(const QString &title);
    QMenu *addMenu(const QIcon &icon, const QString &title);

    QAction *addSeparator();

    QAction *insertMenu(QAction *before, QMenu *menu);
    QAction *insertSeparator(QAction *before);

    bool isEmpty() const;
    void clear();

    void setTearOffEnabled(bool);
    bool isTearOffEnabled() const;

    bool isTearOffMenuVisible() const;
    void hideTearOffMenu();

    void setDefaultAction(QAction *);
    QAction *defaultAction() const;

    void setActiveAction(QAction *act);
    QAction *activeAction() const;

    void popup(const QPoint &pos, QAction *at = Q_NULLPTR);
    QAction *exec();
    QAction *exec(const QPoint &pos, QAction *at = Q_NULLPTR);

    static QAction *exec(const QList<QAction*> &actions, const QPoint &pos,
            QAction *at = Q_NULLPTR, QWidget *parent = Q_NULLPTR);

    QSize sizeHint() const;

    QRect actionGeometry(QAction *) const;
    QAction *actionAt(const QPoint &) const;

    QAction *menuAction() const;

    QString title() const;
    void setTitle(const QString &title);

    QIcon icon() const;
    void setIcon(const QIcon &icon);

    bool separatorsCollapsible() const;
    void setSeparatorsCollapsible(bool collapse);

Q_SIGNALS:
    void aboutToShow();
    void aboutToHide();
    void triggered(QAction *action);
    void hovered(QAction *action);

protected:
    int columnCount() const;

    void changeEvent(QEvent *);
    void keyPressEvent(QKeyEvent *);
    void mouseReleaseEvent(QMouseEvent *);
    void mousePressEvent(QMouseEvent *);
    void mouseMoveEvent(QMouseEvent *);
#ifndef QT_NO_WHEELEVENT
    void wheelEvent(QWheelEvent *);
#endif
    void enterEvent(QEvent *);
    void leaveEvent(QEvent *);
    void hideEvent(QHideEvent *);
    void paintEvent(QPaintEvent *);
    void actionEvent(QActionEvent *);
    void timerEvent(QTimerEvent *);
    bool event(QEvent *);
    bool focusNextPrevChild(bool next);
    void initStyleOption(QStyleOptionMenuItem *option, const QAction *action) const;

private Q_SLOTS:
    void internalSetSloppyAction();
    void internalDelayedPopup();

private:
    Q_PRIVATE_SLOT(d_func(), void _q_actionTriggered())
    Q_PRIVATE_SLOT(d_func(), void _q_actionHovered())
    Q_PRIVATE_SLOT(d_func(), void _q_overrideMenuActionDestroyed())


protected:
    QMenu(QMenuPrivate &dd, QWidget* parent = Q_NULLPTR);

private:
    Q_DISABLE_COPY(QMenu)

    friend class QMenuBar;
    friend class QMenuBarPrivate;
    friend class QTornOffMenu;
    friend class QComboBox;
    friend class QAction;
    friend class QToolButtonPrivate;
};

#endif // QT_NO_MENU

QT_END_NAMESPACE

QT_END_HEADER

#endif // QMENU_H