thehub/hub-qt/qvalidatedlineedit.h

/*
 * This file is part of the Flowee project
 * Copyright (C) 2011-2015 The Bitcoin Core developers
 *
 * 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 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
 * 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/>.
 */

#ifndef FLOWEE_QT_QVALIDATEDLINEEDIT_H
#define FLOWEE_QT_QVALIDATEDLINEEDIT_H

#include <QLineEdit>

/** Line edit that can be marked as "invalid" to show input validation feedback. When marked as invalid,
   it will get a red background until it is focused.
 */
class QValidatedLineEdit : public QLineEdit
{
    Q_OBJECT

public:
    explicit QValidatedLineEdit(QWidget *parent);
    void clear();
    void setCheckValidator(const QValidator *v);
    bool isValid();

protected:
    void focusInEvent(QFocusEvent *evt);
    void focusOutEvent(QFocusEvent *evt);

private:
    bool valid;
    const QValidator *checkValidator;

public Q_SLOTS:
    void setValid(bool valid);
    void setEnabled(bool enabled);

Q_SIGNALS:
    void validationDidChange(QValidatedLineEdit *validatedLineEdit);
    
private Q_SLOTS:
    void markValid();
    void checkValidity();
};

#endif