// -*- C++ -*-
/**
 * \file qt_helpers.h
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author Dekel Tsur
 * \author Richard Heck
 *
 * Full author contact details are available in file CREDITS.
 */

#ifndef QTHELPERS_H
#define QTHELPERS_H

#include "Length.h"
#include "support/qstring_helpers.h"

#include <string>

class QComboBox;
class QLineEdit;
class QCheckBox;
class QString;
class QWidget;

class LengthCombo;

namespace lyx {

/// method to get a Length from widgets (LengthCombo)
std::string widgetsToLength(QLineEdit const * input, LengthCombo const * combo);
/// method to get a Length from widgets (QComboBox)
Length widgetsToLength(QLineEdit const * input, QComboBox const * combo);

//FIXME It would be nice if defaultUnit were a default argument
/// method to set widgets from a Length
void lengthToWidgets(QLineEdit * input, LengthCombo * combo,
	Length const & len, Length::UNIT default_unit);
/// method to set widgets from a string
void lengthToWidgets(QLineEdit * input, LengthCombo * combo,
	std::string const & len, Length::UNIT default_unit);
/// method to set widgets from a Length with optional "auto" if zero
void lengthAutoToWidgets(QLineEdit * input, LengthCombo * combo,
	Length const & len, Length::UNIT defaultUnit);

/// colors a widget red if invalid
void setValid(QWidget * widget, bool valid);


/**
 * qt_ - i18nize string and convert to QString
 *
 * Use this in qt4/ instead of _()
 */
QString const qt_(char const * str, const char * comment = 0);


/**
 * qt_ - i18nize string and convert to QString
 *
 * Use this in qt4/ instead of _()
 */
QString const qt_(std::string const & str);

} // namespace lyx

#endif // QTHELPERS_H