File: event.h

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/* This file is part of the KDE project
   Copyright (C) 1999 Simon Hausmann <hausmann@kde.org>
             (C) 1999 David Faure <faure@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/
#ifndef __kparts_event_h__
#define __kparts_event_h__

#include <qevent.h>

#include <kdelibs_export.h>

class QWidget;

namespace KParts
{
class Part;

/**
 * Base class for all KParts events.
 */
class KPARTS_EXPORT Event : public QCustomEvent
{
public:
  Event( const char *eventName );

  virtual const char *eventName() const;

  static bool test( const QEvent *event );
  static bool test( const QEvent *event, const char *name );
};

/**
 * This event is sent to a Part when its GUI has been activated or deactivated.
 * This is related to PartActivateEvent, but the difference is that
 * GUIActivateEvent happens later (when the GUI is actually built),
 * only for parts that have GUI elements, and only if using KParts::MainWindow.
 * @see KParts::Part::guiActivateEvent()
 */
class KPARTS_EXPORT GUIActivateEvent : public Event
{
public:
  GUIActivateEvent( bool activated ) : Event( s_strGUIActivateEvent ), m_bActivated( activated ) {}

  bool activated() const { return m_bActivated; }

  static bool test( const QEvent *event ) { return Event::test( event, s_strGUIActivateEvent ); }

private:
  static const char *s_strGUIActivateEvent;
  bool m_bActivated;
};

/**
 * This event is sent by the part manager when the active part changes.
 * Each time the active part changes, it will send first a PartActivateEvent
 * with activated=false, part=oldActivePart, widget=oldActiveWidget
 * and then another PartActivateEvent
 * with activated=true, part=newPart, widget=newWidget.
 * @see KParts::Part::partActivateEvent
 */
class KPARTS_EXPORT PartActivateEvent : public Event
{
public:
  PartActivateEvent( bool activated, Part *part, QWidget *widget ) : Event( s_strPartActivateEvent ), m_bActivated( activated ), m_part( part ), m_widget( widget ) {}

  bool activated() const { return m_bActivated; }

  Part *part() const { return m_part; }
  QWidget *widget() const { return m_widget; }

  static bool test( const QEvent *event ) { return Event::test( event, s_strPartActivateEvent ); }

private:
  static const char *s_strPartActivateEvent;
  bool m_bActivated;
  Part *m_part;
  QWidget *m_widget;
};

/**
 * This event is sent when a part is selected or deselected.
 * @see KParts::PartManager::setSelectionPolicy
 */
class KPARTS_EXPORT PartSelectEvent : public Event
{
public:
  PartSelectEvent( bool selected, Part *part, QWidget *widget ) : Event( s_strPartSelectEvent ), m_bSelected( selected ), m_part( part ), m_widget( widget ) {}

  bool selected() const { return m_bSelected; }

  Part *part() const { return m_part; }
  QWidget *widget() const { return m_widget; }

  static bool test( const QEvent *event ) { return Event::test( event, s_strPartSelectEvent ); }

private:
  static const char *s_strPartSelectEvent;
  bool m_bSelected;
  Part *m_part;
  QWidget *m_widget;
};

} // namespace

#endif