text: #ifndef DIMINUTIVECOINAMOUNTFIELD_H
  #define DIMINUTIVECOINAMOUNTFIELD_H
  
  #include <QWidget>
  
  QT_BEGIN_NAMESPACE
  class QDoubleSpinBox;
  class QValueComboBox;
  QT_END_NAMESPACE
  
  /** Widget for entering diminutivecoin amounts.
    */
  class DiminutiveCoinAmountField: public QWidget
  {
      Q_OBJECT
  
      Q_PROPERTY(qint64 value READ value WRITE setValue NOTIFY textChanged USER true)
  
  public:
      explicit DiminutiveCoinAmountField(QWidget *parent = 0);
  
      qint64 value(bool *valid=0) const;
      void setValue(qint64 value);
  
      /** Mark current value as invalid in UI. */
      void setValid(bool valid);
      /** Perform input validation, mark field as invalid if entered value is not valid. */
      bool validate();
  
      /** Change unit used to display amount. */
      void setDisplayUnit(int unit);
  
      /** Make field empty and ready for new input. */
      void clear();
  
      /** Qt messes up the tab chain by default in some cases (issue https://bugreports.qt-project.org/browse/QTBUG-10907),
          in these cases we have to set it up manually.
      */
      QWidget *setupTabChain(QWidget *prev);
  
  signals:
      void textChanged();
  
  protected:
      /** Intercept focus-in event and ',' key presses */
      bool eventFilter(QObject *object, QEvent *event);
  
  private:
      QDoubleSpinBox *amount;
      QValueComboBox *unit;
      int currentUnit;
  
      void setText(const QString &text);
      QString text() const;
  
  private slots:
      void unitChanged(int idx);
  
  };
  
  #endif // DIMINUTIVECOINAMOUNTFIELD_H
  