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/*
    This file is part of libqopensync.

    Copyright (c) 2005 Tobias Koenig <tokoe@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 QSYNC_GROUP_H
#define QSYNC_GROUP_H

#include <qdatetime.h>
#include <qstringlist.h>

#include <libqopensync/filter.h>
#include <libqopensync/member.h>

class OSyncGroup;

namespace QSync {

/**
  @internal
 */
class GroupConfig
{
  friend class Group;

  public:
    GroupConfig();

    QStringList activeObjectTypes() const;
    void setActiveObjectTypes( const QStringList &objectTypes );

  private:
    OSyncGroup *mGroup;
};


class Group
{
  friend class Engine;
  friend class Environment;

  public:
    enum LockType
    {
      LockOk,
      Locked,
      LockStale
    };

    Group();
    ~Group();

    /**
      Returns whether the object is a valid group.
     */
    bool isValid() const;

    class Iterator
    {
      friend class Group;

      public:
        Iterator( Group *group )
          : mGroup( group ), mPos( -1 )
        {
        }

        Iterator( const Iterator &it )
        {
          mGroup = it.mGroup;
          mPos = it.mPos;
        }

        Member operator*() 
        {
          return mGroup->memberAt( mPos );
        }

        Iterator &operator++() { mPos++; return *this; }
        Iterator &operator++( int ) { mPos++; return *this; }
        Iterator &operator--() { mPos--; return *this; }
        Iterator &operator--( int ) { mPos--; return *this; }
        bool operator==( const Iterator &it ) { return mGroup == it.mGroup && mPos == it.mPos; }
        bool operator!=( const Iterator &it ) { return mGroup == it.mGroup && mPos != it.mPos; }

      private:
        Group *mGroup;
        int mPos;
    };

    /**
      Returns an iterator pointing to the first item in the member list.
      This iterator equals end() if the member list is empty.
     */
    Iterator begin();

    /**
      Returns an iterator pointing past the last item in the member list.
      This iterator equals begin() if the member list is empty.
     */
    Iterator end();

    /**
      Sets the name of the group.
     */
    void setName( const QString &name );

    /**
      Returns the name of the group.
     */
    QString name() const;

    /**
      Sets the time of the last successfull synchronization.
     */
    void setLastSynchronization( const QDateTime &dateTime );

    /**
      Returns the time of the last successfull synchronization.
     */
    QDateTime lastSynchronization() const;

    /**
      Locks the group.

      @returns The the result of the locking request.
     */
    LockType lock();

    /**
      Unlocks the group.

      @param removeFile Whether the lock file shall be removed.
     */
    void unlock( bool removeFile = true );

    /**
      Adds a new member to the group.

      @returns the new member.
     */
    Member addMember();

    /**
      Removes a member from the group.
     */
    void removeMember( const Member &member );

    /**
      Returns the number of members.
     */
    int memberCount() const;

    /**
      Returns the member at position @param pos.
     */
    Member memberAt( int pos ) const;

    /**
      Returns the number of filters.
     */
    int filterCount() const;

    /**
      Returns the filter at position @param pos.
     */
    Filter filterAt( int pos );

    /**
      Set, if the object type with given name is enabled for synchronisation for
      this group.
     */
    void setObjectTypeEnabled( const QString &objectType, bool enabled );

    /**
      Returns whether the object type with given name is enabled for synchronisation for
      this group.
     */
    bool isObjectTypeEnabled( const QString &objectType ) const;

    /**
      Saves the configuration to hard disc.
     */
    Result save();

    /**
      Returns the config object of this group.

      Note: This method is only available for OpenSync 0.19 and 0.20.
     */
    GroupConfig config() const;

    bool operator==( const Group &group ) const { return mGroup == group.mGroup; }

  private:
    OSyncGroup *mGroup;
};

}

#endif