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/*
    KNode, the KDE newsreader
    Copyright (c) 1999-2005 the KNode authors.
    See file AUTHORS for details

    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.
    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, US
*/

#ifndef KNFOLDERMANAGER_H
#define KNFOLDERMANAGER_H

#include <tqobject.h>
#include <tqvaluelist.h>

class KNFolder;
class KNArticleManager;
class KNCleanUp;


class KNFolderManager : public TQObject
{
  Q_OBJECT
  

  public:
    KNFolderManager(KNArticleManager *a);
    ~KNFolderManager();

    //folder access
    void setCurrentFolder(KNFolder *f);
    KNFolder* currentFolder() const       { return c_urrentFolder; }
    bool hasCurrentFolder() const         { return (c_urrentFolder!=0); }
    KNFolder* folder(int id);
    TQValueList<KNFolder*> folders() const { return mFolderList; }

    //standard folders
    KNFolder* root() const                { return mFolderList[0]; }
    KNFolder* drafts() const              { return mFolderList[1]; }
    KNFolder* outbox() const              { return mFolderList[2]; }
    KNFolder* sent() const                { return mFolderList[3]; }

    //header loading
    bool loadHeaders(KNFolder *f);
    bool unloadHeaders(KNFolder *f, bool force=true);
    bool loadDrafts()                     { return loadHeaders(drafts()); }
    bool loadOutbox()                     { return loadHeaders(outbox()); }
    bool loadSent()                       { return loadHeaders(sent()); }

    // returns the new folder
    KNFolder* newFolder(KNFolder *p);
    bool deleteFolder(KNFolder *f);
    void emptyFolder(KNFolder *f);
    bool moveFolder(KNFolder *f, KNFolder *p);

    //unsent articles
    int unsentForAccount(int accId);

    //compacting
    void compactFolder(KNFolder *f);
    void compactAll(KNCleanUp *cup);
    void compactAll();

    // import + export
    void importFromMBox(KNFolder *f);
    void exportToMBox(KNFolder *f);

    //synchronization
    void syncFolders();

  signals:
    // signals for the collection tree to update the UI
    void folderAdded(KNFolder *f);
    void folderRemoved(KNFolder *f);
    void folderActivated(KNFolder *f);

  protected:
    int loadCustomFolders();

    KNFolder  *c_urrentFolder;
    TQValueList<KNFolder*> mFolderList;
    int l_astId;
    KNArticleManager *a_rtManager;

};

#endif