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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#ifndef BASEVALIDATINGLINEEDIT_H
#define BASEVALIDATINGLINEEDIT_H
#include "utils_global.h"
#include <QtGui/QLineEdit>
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 QTCREATOR_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 &);
// 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;
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
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