messageitemsetmanager.h 2.3 KB
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/******************************************************************************
 *
 *  Copyright 2008 Szymon Tomasz Stefanek <pragma@kvirc.net>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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.
 *
 *******************************************************************************/

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#ifndef MESSAGELIST_CORE_MESSAGEITEMSETMANAGER_H
#define MESSAGELIST_CORE_MESSAGEITEMSETMANAGER_H
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#include <QHash>
#include <QList>

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namespace MessageList {
namespace Core {
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class MessageItem;

typedef long int MessageItemSetReference;

/**
 * This class manages sets of messageitem references.
 * It can be used to create a set, add some messages to it
 * and get a reference that later can be used to retrieve
 * the stored messages.
 *
 * It's used by Model to keep track of jobs requested
 * from outside that operate on sets of MessageItem instances.
 * Model takes care of removing the deleted MessageItem objects
 * from the sets in order to avoid invalid references.
 */
class MessageItemSetManager
{
public:
    MessageItemSetManager();
    ~MessageItemSetManager();

private:
    QHash< MessageItemSetReference, QHash< MessageItem *, MessageItem * > * > *mSets;

public:
    void clearAllSets();
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    Q_REQUIRED_RESULT int setCount() const;
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    void removeSet(MessageItemSetReference ref);
    void removeMessageItemFromAllSets(MessageItem *mi);
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    Q_REQUIRED_RESULT QList< MessageItem * > messageItems(MessageItemSetReference ref);
    Q_REQUIRED_RESULT MessageItemSetReference createSet();
    Q_REQUIRED_RESULT bool addMessageItem(MessageItemSetReference ref, MessageItem *mi);
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};
} // namespace Core
} // namespace MessageList

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#endif //!__MESSAGELIST_CORE_MESSAGEITEMSETMANAGER_H