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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the examples of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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    18 ** General Public License version 2.1 as published by the Free Software

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    40 ****************************************************************************/

    41 

    42 #include <qdebug.h>

    43 #include <QApplication>

    44 #include <QLineEdit>

    45 #include <QValidator>

    46 

    47 #include "ui_validators.h"

    48 

    49 class ValidatorWidget : public QWidget, public Ui::ValidatorsForm

    50 {

    51     Q_OBJECT

    52 public:

    53     ValidatorWidget(QWidget *parent = 0);

    54 

    55 private slots:

    56     void updateValidator();

    57     void updateDoubleValidator();

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

    59 

    60 private:

    61     QIntValidator *validator;

    62     QDoubleValidator *doubleValidator;

    63 };

    64 

    65 ValidatorWidget::ValidatorWidget(QWidget *parent)

    66     : QWidget(parent)

    67 {

    68     setupUi(this);

    69 

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

    71 

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

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

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

    75 

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

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

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

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

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

    81 

    82     validator = 0;

    83     doubleValidator = 0;

    84     updateValidator();

    85     updateDoubleValidator();

    86 };

    87 

    88 void ValidatorWidget::updateValidator()

    89 {

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

    91     v->setLocale(locale());

    92     editor->setValidator(v);

    93     delete validator;

    94     validator = v;

    95 

    96     QString s = editor->text();

    97     int i = 0;

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

    99         editor->clear();

   100     } else {

   101         editor->setText(s);

   102     }

   103 }

   104 

   105 void ValidatorWidget::updateDoubleValidator()

   106 {

   107     QDoubleValidator *v

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

   109                                 doubleDecimals->value(), this);

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

   111     v->setLocale(locale());

   112     doubleEditor->setValidator(v);

   113     delete doubleValidator;

   114     doubleValidator = v;

   115 

   116     QString s = doubleEditor->text();

   117     int i = 0;

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

   119         doubleEditor->clear();

   120     } else {

   121         doubleEditor->setText(s);

   122     }

   123 }

   124 

   125 int main(int argc, char **argv)

   126 {

   127     Q_INIT_RESOURCE(validators);

   128 

   129     QApplication app(argc, argv);

   130 

   131     ValidatorWidget w;

   132     w.show();

   133 

   134     return app.exec();

   135 }

   136 

   137 #include "main.moc"