passedit.h

/***************************************************************************
 * PassEdit class - QLineEdit operating as a pair for editing passwords.
 *
 *   Copyright (C) 2021 by AK-47
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 * This file is part of the gazelle-installer.
 ***************************************************************************/
#pragma once

#include <QLineEdit>

class PassEdit : public QObject
{
    Q_OBJECT
private:
    enum EntropyThreshold { Negligible = 0, VeryWeak = 40, Weak = 70, Strong = 100, VeryStrong = 130 };

    QLineEdit *master = nullptr;
    QLineEdit *slave = nullptr;
    QAction *actionEye = nullptr;
    QAction *actionGauge = nullptr;
    QString gentext;
    int min;
    bool lastValid = false;
    void generate() noexcept;
    void masterContextMenu(QPoint pos) noexcept;
    void masterTextChanged(const QString &text) noexcept;
    void slaveTextChanged(const QString &text) noexcept;
    void eyeToggled(bool checked) noexcept;
    bool eventFilter(QObject *watched, QEvent *event) noexcept override;

public:
    PassEdit(QLineEdit *master, QLineEdit *slave, int min = 0, QObject *parent = nullptr) noexcept;
    [[nodiscard]] inline int minimum() const
    {
        return min;
    }
    [[nodiscard]] inline bool valid() const noexcept
    {
        return lastValid;
    }
    [[nodiscard]] inline bool confirmed() const noexcept
    {
        return (slave->text() == master->text());
    }
    [[nodiscard]] inline bool lengthOK() const noexcept
    {
        return (master->text().length() >= min);
    }
    inline int length()
    {
        return master->text().length();
    }
signals:
    void validationChanged(bool valid);
};