/* This file is part of the dbusmenu-qt library
   Copyright 2009 Canonical
   Author: Aurelien Gateau <aurelien.gateau@canonical.com>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License (LGPL) 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.
*/
#include "dbusmenushortcut_p.h"

// Qt
#include <QKeySequence>

static const int QT_COLUMN = 0;
static const int DM_COLUMN = 1;

static void processKeyTokens(QStringList* tokens, int srcCol, int dstCol)
{
    struct Row {
        const char* zero;
        const char* one;
        const char* operator[](int col) const { return col == 0 ? zero : one; }
    };
    static const Row table[] =
    { {"Meta", "Super"},
      {"Ctrl", "Control"},
      // Special cases for compatibility with libdbusmenu-glib which uses
      // "plus" for "+" and "minus" for "-".
      // cf https://bugs.launchpad.net/libdbusmenu-qt/+bug/712565
      {"+", "plus"},
      {"-", "minus"},
      {nullptr, nullptr}
    };

    const Row* ptr = table;
    for (; ptr->zero != nullptr; ++ptr) {
        const char* from = (*ptr)[srcCol];
        const char* to = (*ptr)[dstCol];
        tokens->replaceInStrings(from, to);
    }
}

DBusMenuShortcut DBusMenuShortcut::fromKeySequence(const QKeySequence& sequence)
{
    QString string = sequence.toString();
    DBusMenuShortcut shortcut;
    QStringList tokens = string.split(QStringLiteral(", "));
    Q_FOREACH(QString token, tokens) {
        // Hack: Qt::CTRL | Qt::Key_Plus is turned into the string "Ctrl++",
        // but we don't want the call to token.split() to consider the
        // second '+' as a separator so we replace it with its final value.
        token.replace(QLatin1String("++"), QLatin1String("+plus"));
        QStringList keyTokens = token.split('+');
        processKeyTokens(&keyTokens, QT_COLUMN, DM_COLUMN);
        shortcut << keyTokens;
    }
    return shortcut;
}

QKeySequence DBusMenuShortcut::toKeySequence() const
{
    QStringList tmp;
    Q_FOREACH(const QStringList& keyTokens_, *this) {
        QStringList keyTokens = keyTokens_;
        processKeyTokens(&keyTokens, DM_COLUMN, QT_COLUMN);
        tmp << keyTokens.join(QLatin1String("+"));
    }
    QString string = tmp.join(QLatin1String(", "));
    return QKeySequence::fromString(string);
}