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 /*****************************************************************************
  *   Copyright 2007 - 2010 Craig Drummond <craig.p.drummond@gmail.com>       *
  *   Copyright 2013 - 2015 Yichao Yu <yyc1992@gmail.com>                     *
  *                                                                           *
  *   This program is free software; you can redistribute it and/or modify    *
  *   it under the terms of the GNU Lesser General Public License as          *
  *   published by the Free Software Foundation; either version 2.1 of the    *
  *   License, or (at your option) version 3, or any later version accepted   *
  *   by the membership of KDE e.V. (or its successor approved by the         *
  *   membership of KDE e.V.), which shall act as a proxy defined in          *
  *   Section 6 of version 3 of the license.                                  *
  *                                                                           *
  *   This program is distributed in the hope that it will be useful,         *
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU       *
  *   Lesser General Public License for more details.                         *
  *                                                                           *
  *   You should have received a copy of the GNU Lesser General Public        *
  *   License along with this library. If not,                                *
  *   see <http://www.gnu.org/licenses/>.                                     *
  *****************************************************************************/
 
 #ifndef __SHORTCUT_HANDLER_H__
 #define __SHORTCUT_HANDLER_H__
 
 #include <QObject>
 #include <QSet>
 #include <QList>
 
 class QWidget;
 
 namespace QtCurve {
 class ShortcutHandler: public QObject {
     Q_OBJECT
 
 public:
     explicit ShortcutHandler(QObject *parent=0);
     ~ShortcutHandler() override;
 
     bool hasSeenAlt(const QWidget *widget) const;
     bool
     isAltDown() const
     {
         return m_altDown;
     }
     bool showShortcut(const QWidget *widget) const;
 
 private Q_SLOTS:
     void widgetDestroyed(QObject *o);
 
 protected:
     void updateWidget(QWidget *w);
     bool eventFilter(QObject *watched, QEvent *event);
 
 private:
     bool m_altDown;
     QSet<QWidget*> m_seenAlt;
     QSet<QWidget*> m_updated;
     QList<QWidget*> m_openMenus;
 };
 }
 
 #endif