qTox/src/widget/form/tabcompleter.h

/*
    Copyright (C) 2005-2014 by the Quassel Project and Project Tox
    devel@quassel-irc.org and https://tox.im

    This file is part of qTox, a Qt-based graphical interface for Tox.

    This program is libre 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 3 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 COPYING file for more details.
*/

/* This file was taken from the Quassel IRC client source (src/uisupport), and
   was greatly simplified for use in qTox. */

#ifndef TABCOMPLETER_H
#define TABCOMPLETER_H

#include <QString>
#include <QMap>
#include <QObject> // I'm really confused why I need this

class ChatTextEdit;
class Group;

class TabCompleter : public QObject
{
    Q_OBJECT
public:
    explicit TabCompleter(ChatTextEdit* msgEdit, Group* group);

public slots:
    void complete();
    void reset();

private:
    struct SortableString {
        inline SortableString(const QString &n) : contents{n} {}
        bool operator<(const SortableString &other) const;
        QString contents;
    };

    ChatTextEdit* msgEdit;
    Group* group;
    bool enabled;
    const static QString nickSuffix;

    QMap<SortableString, QString> completionMap;
    QMap<SortableString, QString>::Iterator nextCompletion;
    int lastCompletionLength;

    void buildCompletionList();
};


#endif