/*
  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) version 3 or any later version
  accepted by the membership of KDE e.V. (or its successor appro-
  ved by the membership of KDE e.V.), which shall act as a proxy
  defined in Section 14 of version 3 of the license.

  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, see http://www.gnu.org/licenses/.
*/

/*
  Copyright (C) 2012 Eike Hein <hein@kde.org>
*/

#ifndef TOPICEDIT_H
#define TOPICEDIT_H


#include <KTextEdit>

class Channel;

class QEvent;

class KMessageWidget;


class TopicEdit : public KTextEdit
{
    Q_OBJECT

    public:
        explicit TopicEdit(QWidget* parent = 0);
        ~TopicEdit() override;

        Channel* channel() const;
        void setChannel(Channel* channel);

        int maximumLength() const;
        void setMaximumLength(int length);

        QSize minimumSizeHint() const override;

        bool eventFilter(QObject* watched, QEvent* event) override;


    protected:
        void moveEvent(QMoveEvent* event) override;


    private Q_SLOTS:
        void contentsChanged(int position, int charsRemoved, int charsAdded);
        void trimExcessText();
        void moveCursorToEnd();

    private:
        bool colorizeExcessText();
        void resetTextColorization();

        void showWarning();
        void hideWarning();
        void updateWarningGeometry();

        int m_maximumLength;
        int m_maxCursorPos;

        KMessageWidget* m_warning;
        QWidget* m_warningUndercarriage;

        Channel* m_channel;
};

#endif
