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/***************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information (qt-info@nokia.com)
**
**
** Non-Open Source Usage
**
** Licensees may use this file in accordance with the Qt Beta Version
** License Agreement, Agreement version 2.2 provided with the Software or,
** alternatively, in accordance with the terms contained in a written
** agreement between you and Nokia.
**
** GNU General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the packaging
** of this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
**
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt GPL Exception version
** 1.2, included in the file GPL_EXCEPTION.txt in this package.
**
***************************************************************************/
#ifndef BASEVALIDATINGLINEEDIT_H
#define BASEVALIDATINGLINEEDIT_H
#include "utils_global.h"
#include <QtGui/QLineEdit>
namespace Core {
namespace Utils {
struct BaseValidatingLineEditPrivate;
/* Base class for validating line edits that performs validation in a virtual
* validate() function to be implemented in derived classes.
* When invalid, the text color will turn red and a tooltip will
* contain the error message. This approach is less intrusive than a
* QValidator which will prevent the user from entering certain characters.
*
* The widget has a concept of an "initialText" which can be something like
* "<Enter name here>". This results in state 'DisplayingInitialText', which
* is not valid, but is not marked red. */
class QWORKBENCH_UTILS_EXPORT BaseValidatingLineEdit : public QLineEdit {
Q_OBJECT
Q_DISABLE_COPY(BaseValidatingLineEdit)
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 &);
static QColor textColor(const QWidget *w);
static void setTextColor(QWidget *w, const QColor &c);
signals:
void validChanged();
void validReturnPressed();
protected:
virtual bool validate(const QString &value, QString *errorMessage) const = 0;
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;
};
}
}
#endif // BASEVALIDATINGLINEEDIT_H
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