porymap/include/core/validator.h
2024-12-16 14:34:45 -05:00

66 lines
2.3 KiB
C++

#ifndef VALIDATOR_H
#define VALIDATOR_H
/*
This file contains our subclasses of QValidator.
- PrefixValidator is for input widgets that want to enforce a particular prefix.
It differs from a QRegularExpressionValidator with a prefix in the regex because
it will automatically enforce the prefix in fixup() if it isn't present.
It's preferable to QLineEdit's input mask because it won't affect cursor behavior.
- IdentifierValidator is for validating that input text can be used for the name of an identifier in the project.
(i.e., starts with a letter or underscore, then may continue with letters, numbers, or underscores).
Unless a prefix is specified this is a normal QRegularExpressionValidator, we only have a subclass because we use it so often.
- UppercaseValidator is just a validator that uppercases input text.
*/
#include <QValidator>
class PrefixValidator : public QRegularExpressionValidator {
Q_OBJECT
public:
explicit PrefixValidator(const QString &prefix, QObject *parent = nullptr)
: QRegularExpressionValidator(parent), m_prefix(prefix) {};
explicit PrefixValidator(const QString &prefix, const QRegularExpression &re, QObject *parent = nullptr)
: QRegularExpressionValidator(re, parent), m_prefix(prefix) {};
~PrefixValidator() {};
virtual QValidator::State validate(QString &input, int &) const override;
virtual void fixup(QString &input) const override;
QString prefix() const { return m_prefix; }
void setPrefix(const QString &prefix);
bool isValid(QString &input) const;
private:
QString m_prefix;
bool missingPrefix(const QString &input) const;
};
class IdentifierValidator : public PrefixValidator {
Q_OBJECT
public:
explicit IdentifierValidator(QObject *parent = nullptr)
: PrefixValidator("", re_identifier, parent) {};
explicit IdentifierValidator(const QString &prefix, QObject *parent = nullptr)
: PrefixValidator(prefix, re_identifier, parent) {};
~IdentifierValidator() {};
private:
static const QRegularExpression re_identifier;
};
class UppercaseValidator : public QValidator {
virtual QValidator::State validate(QString &input, int &) const override {
input = input.toUpper();
return QValidator::Acceptable;
}
};
#endif // VALIDATOR_H