File: calendarclipboard.h

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/*
   Copyright (C) 2012 Sérgio Martins <iamsergio@gmail.com>

   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 _AKONADI_CALENDAR_CLIPBOARD_H
#define _AKONADI_CALENDAR_CLIPBOARD_H

#include "calendarbase.h"
#include "akonadi-calendar_export.h"

#include <kcalcore/incidence.h>
#include <QObject>

namespace Akonadi
{

class IncidenceChanger;

/**
 * @short Class to copy or cut calendar incidences.
 *
 * @author Sérgio Martins <iamsergio@gmail.com>
 * @since 4.11
 */
class AKONADI_CALENDAR_EXPORT CalendarClipboard : public QObject
{
    Q_OBJECT
public:

    enum Mode {
        SingleMode = 0, ///< Only the specified incidence is cut/copied.
        RecursiveMode,  ///< The specified incidence's children are also cut/copied
        AskMode         ///< The user is asked if he wants children to be cut/copied too
    };

    /**
     * Constructs a new CalendarClipboard.
     * @param calendar calendar containing incidences
     * @param changer incidence changer that will delete incidences while copying.
     *        If 0, an internal one will be created.
     * @param parent QObject parent
     */
    explicit CalendarClipboard(const Akonadi::CalendarBase::Ptr &calendar,
                               Akonadi::IncidenceChanger *changer = nullptr,
                               QObject *parent = nullptr);
    /**
     * Destroys the CalendarClipboard instance.
     */
    ~CalendarClipboard();

    /**
     * Copies the specified incidence into the clipboard and then deletes it from akonadi.
     * The incidence must be present in the calendar.
     * After it's deletion from akonadi, signal cutFinished() is emitted.
     * @param incidence to cut
     * @param mode how to treat child incidences. Defaults to #RecursiveMode
     * @see cutFinished().
     */
    void cutIncidence(const KCalCore::Incidence::Ptr &incidence,
                      CalendarClipboard::Mode mode = RecursiveMode);

    /**
     * Copies the specified incidence into the clipboard.
     * @param incidence the incidence to copy
     * @param mode how to treat child incidences. Defaults to #RecursiveMode
     * @return true on success
     */
    bool copyIncidence(const KCalCore::Incidence::Ptr &incidence,
                       CalendarClipboard::Mode mode = RecursiveMode);

    /**
     * Returns if there's any ical mime data available for pasting.
     */
    Q_REQUIRED_RESULT bool pasteAvailable() const;

Q_SIGNALS:
    /**
     * Emitted after cutIncidences() finishes.
     * @param success true if the cut was successful
     * @param errorMessage if @p success if false, contains the error message, empty otherwise.
     */
    void cutFinished(bool success, const QString &errorMessage);

private:
    class Private;
    Private *const d;
};

}

#endif