kde-playground/kdepim/libkdepim/addressline/recentaddresses.h

/*  -*- mode: C++; c-file-style: "gnu" -*-
 *
 *  Copyright (c) 2001-2003 Carsten Pfeiffer <pfeiffer@kde.org>
 *  Copyright (c) 2003 Zack Rusin <zack@kde.org>
 *
 *  KMail 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.
 *
 *  KMail 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
 *
 *  In addition, as a special exception, the copyright holders give
 *  permission to link the code of this program with any edition of
 *  the Qt library by Trolltech AS, Norway (or with modified versions
 *  of Qt that use the same license as Qt), and distribute linked
 *  combinations including the two.  You must obey the GNU General
 *  Public License in all respects for all of the code used other than
 *  Qt.  If you modify this file, you may extend this exception to
 *  your version of the file, but you are not obligated to do so.  If
 *  you do not wish to do so, delete this exception statement from
 *  your version.
 */
#ifndef KDEPIM_RECENTADDRESSES_H
#define KDEPIM_RECENTADDRESSES_H

#include "kdepim_export.h"
#include <kabc/addressee.h>
#include <KDialog>
#include <QStringList>
class KConfig;
class KPushButton;
class QListWidget;
class KLineEdit;

namespace KPIM {

class KDEPIM_EXPORT RecentAddressDialog : public KDialog
{
    Q_OBJECT
public:
    explicit RecentAddressDialog( QWidget *parent );
    ~RecentAddressDialog();

    void setAddresses( const QStringList &addrs );
    QStringList addresses() const;
    void addAddresses(KConfig *config);

private slots:
    void slotAddItem();
    void slotRemoveItem();
    void slotSelectionChanged();
    void slotTypedSomething(const QString&);

protected:
    void updateButtonState();
    bool eventFilter( QObject* o, QEvent* e );

private:
    void readConfig();
    void writeConfig();
    KPushButton* mNewButton, *mRemoveButton;
    QListWidget *mListView;
    KLineEdit *mLineEdit;
};

/**
 * Handles a list of "recent email-addresses". Simply set a max-count and
 * call @ref add() to add entries.
 *
 * @author Carsten Pfeiffer <pfeiffer@kde.org>
 */

class KDEPIM_EXPORT RecentAddresses
{
public:
    ~RecentAddresses();
    /**
     * @returns the only possible instance of this class.
     */
    static RecentAddresses *self( KConfig *config = 0 );

    /*
     * @return true if self() was called, i.e. a RecentAddresses instance exists
     */
    static bool exists();

    /**
     * @returns the list of recent addresses.
     * Note: an entry doesn't have to be one email address, it can be multiple,
     * like "Foo <foo@bar.org>, Bar Baz <bar@baz.org>".
     */
    QStringList     addresses() const;
    const KABC::Addressee::List &kabcAddresses() const
    { return m_addresseeList; }

    /**
     * Adds an entry to the list.
     * Note: an entry doesn't have to be one email address, it can be multiple,
     * like "Foo <foo@bar.org>, Bar Baz <bar@baz.org>".
     */
    void add( const QString &entry );

    /**
     * Sets the maximum number, the list can hold. The list adjusts to this
     * size if necessary. Default maximum is 40.
     */
    void setMaxCount( int count );

    /**
     * @returns the current maximum number of entries.
     */
    uint maxCount() const { return m_maxCount; }

    /**
     * Loads the list of recently used addresses from the configfile.
     * Automatically done on startup.
     */
    void load( KConfig * );

    /**
     * Saves the list of recently used addresses to the configfile.
     * Make sure to call KGlobal::config()->sync() afterwards, to really save.
     */
    void save( KConfig * );

    /**
     * Removes all entries from the history.
     */
    void clear();

private:
    explicit RecentAddresses( KConfig *config = 0 );

    KABC::Addressee::List m_addresseeList;

    void adjustSize();

    int m_maxCount;
};

}

#endif