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#include <qdebug.h>

#include <QApplication>

#include <QLineEdit>

#include <QValidator>

#include "ui_validators.h"

class ValidatorWidget : public QWidget, public Ui::ValidatorsForm

{

    Q_OBJECT

public:

    ValidatorWidget(QWidget *parent = 0);

private slots:

    void updateValidator();

    void updateDoubleValidator();

    void _setLocale(const QLocale &l) { setLocale(l); updateValidator(); updateDoubleValidator(); }

private:

    QIntValidator *validator;

    QDoubleValidator *doubleValidator;

};

ValidatorWidget::ValidatorWidget(QWidget *parent)

    : QWidget(parent)

{

    setupUi(this);

    connect(localeSelector, SIGNAL(localeSelected(QLocale)), this, SLOT(_setLocale(QLocale)));

    connect(minVal, SIGNAL(editingFinished()), this, SLOT(updateValidator()));

    connect(maxVal, SIGNAL(editingFinished()), this, SLOT(updateValidator()));

    connect(editor, SIGNAL(editingFinished()), ledWidget, SLOT(flash()));

    connect(doubleMaxVal, SIGNAL(editingFinished()), this, SLOT(updateDoubleValidator()));

    connect(doubleMinVal, SIGNAL(editingFinished()), this, SLOT(updateDoubleValidator()));

    connect(doubleDecimals, SIGNAL(valueChanged(int)), this, SLOT(updateDoubleValidator()));

    connect(doubleFormat, SIGNAL(activated(int)), this, SLOT(updateDoubleValidator()));

    connect(doubleEditor, SIGNAL(editingFinished()), doubleLedWidget, SLOT(flash()));

    validator = 0;

    doubleValidator = 0;

    updateValidator();

    updateDoubleValidator();

};

void ValidatorWidget::updateValidator()

{

    QIntValidator *v = new QIntValidator(minVal->value(), maxVal->value(), this);

    v->setLocale(locale());

    editor->setValidator(v);

    delete validator;

    validator = v;

    QString s = editor->text();

    int i = 0;

    if (validator->validate(s, i) == QValidator::Invalid) {

        editor->clear();

    } else {

        editor->setText(s);

    }

}

void ValidatorWidget::updateDoubleValidator()

{

    QDoubleValidator *v

        = new QDoubleValidator(doubleMinVal->value(), doubleMaxVal->value(),

                                doubleDecimals->value(), this);

    v->setNotation(static_cast<QDoubleValidator::Notation>(doubleFormat->currentIndex()));

    v->setLocale(locale());

    doubleEditor->setValidator(v);

    delete doubleValidator;

    doubleValidator = v;

    QString s = doubleEditor->text();

    int i = 0;

    if (doubleValidator->validate(s, i) == QValidator::Invalid) {

        doubleEditor->clear();

    } else {

        doubleEditor->setText(s);

    }

}

int main(int argc, char **argv)

{

    Q_INIT_RESOURCE(validators);

    QApplication app(argc, argv);

    ValidatorWidget w;

    w.show();

    return app.exec();

}

#include "main.moc"