/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** use the contact form at http://qt.digia.com/contact-us.
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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****************************************************************************/

#ifndef BASEVALIDATINGLINEEDIT_H
#define BASEVALIDATINGLINEEDIT_H

#include "utils_global.h"

#include "fancylineedit.h"

namespace Utils {

struct BaseValidatingLineEditPrivate;

class QTCREATOR_UTILS_EXPORT BaseValidatingLineEdit : public FancyLineEdit
{
    Q_OBJECT
    Q_PROPERTY(QString initialText READ initialText WRITE setInitialText DESIGNABLE true)
    Q_PROPERTY(QColor errorColor READ errorColor WRITE setErrorColor DESIGNABLE true)

public:
    enum State { Invalid, DisplayingInitialText, Valid };

    explicit BaseValidatingLineEdit(QWidget *parent = 0);
    virtual ~BaseValidatingLineEdit();


    State state() const;
    bool isValid() const;
    QString errorMessage() const;

    QString initialText() const;
    void setInitialText(const QString &);

    QColor errorColor() const;
    void setErrorColor(const  QColor &);

    // Trigger an update (after changing settings)
    void triggerChanged();

    static QColor textColor(const QWidget *w);
    static void setTextColor(QWidget *w, const QColor &c);

signals:
    void validChanged();
    void validChanged(bool validState);
    void validReturnPressed();

protected:
    virtual bool validate(const QString &value, QString *errorMessage) const = 0;
    virtual QString fixInputString(const QString &string);

protected slots:
    // Custom behaviour can be added here. The base implementation must
    // be called.
    virtual void slotReturnPressed();
    virtual void slotChanged(const QString &t);

private:
    BaseValidatingLineEditPrivate *m_bd;
};

} // namespace Utils

#endif // BASEVALIDATINGLINEEDIT_H