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/*
  Copyright (c) 2015-2016 Montel Laurent <montel@kde.org>

  This program is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License, version 2, as
  published by the Free Software Foundation.

  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
  General Public License for more details.

  You should have received a copy of the GNU General Public License along
  with this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifndef VIEWERPLUGININTERFACE_H
#define VIEWERPLUGININTERFACE_H

#include <QObject>
#include "messageviewer_export.h"
#include <KMime/Message>
#include <AkonadiCore/Item>

class QAction;
namespace MessageViewer
{
class ViewerPluginInterfacePrivate;
class MESSAGEVIEWER_EXPORT ViewerPluginInterface : public QObject
{
    Q_OBJECT
public:
    explicit ViewerPluginInterface(QObject *parent = Q_NULLPTR);
    ~ViewerPluginInterface();
    enum SpecificFeatureType {
        None = 0,
        NeedSelection = 2,
        NeedMessage = 4,
        NeedUrl = 8,
        All = 16
    };
    Q_FLAGS(SpecificFeatureTypes)
    Q_DECLARE_FLAGS(SpecificFeatureTypes, SpecificFeatureType)

    virtual void execute();

    virtual void setText(const QString &text);
    virtual QAction *action() const;
    virtual void setUrl(const QUrl &url);
    virtual void setMessage(const KMime::Message::Ptr &value);
    virtual void setMessageItem(const Akonadi::Item &item);
    virtual void closePlugin();
    virtual ViewerPluginInterface::SpecificFeatureTypes featureTypes() const = 0;
    virtual void updateAction(const Akonadi::Item &item);

protected:
    virtual void showWidget();
    void addHelpTextAction(QAction *act, const QString &text);

protected Q_SLOTS:
    void slotActivatePlugin();

Q_SIGNALS:
    void activatePlugin(MessageViewer::ViewerPluginInterface *);

private:
    ViewerPluginInterfacePrivate *const d;
};
}

#endif // VIEWERPLUGININTERFACE_H