Method checkValues

src/frontend/spreadsheet/FunctionValuesDialog.cpp:189–233

}

void FunctionValuesDialog::checkValues() {
	if (ui.teEquation->toPlainText().simplified().isEmpty()) {
		m_okButton->setToolTip(i18n("Empty formula expression"));
		m_okButton->setEnabled(false);
		return;
	}

	// check whether the formula syntax is correct
	if (!ui.teEquation->isValid()) {
		m_okButton->setToolTip(i18n("Incorrect formula syntax: ") + ui.teEquation->errorMessage());
		m_okButton->setEnabled(false);
		return;
	}

	// check if expression uses variables
	if (ui.teEquation->expressionUsesVariables()) {
		// check the variables
		for (int i = 0; i < m_variableDataColumns.size(); ++i) {
			const auto& varName = m_variableLineEdits.at(i)->text();

			// ignore empty
			if (varName.isEmpty())
				continue;

			// check whether a valid column was provided for the variable
			auto* cb = m_variableDataColumns.at(i);
			auto* aspect = static_cast<AbstractAspect*>(cb->currentModelIndex().internalPointer());
			if (!aspect) {
				m_okButton->setToolTip(i18n("Select a valid column"));
				m_okButton->setEnabled(false);
				return;
			}

			// check whether the variable name is correct
			if (!validVariableName(m_variableLineEdits.at(i))) {
				m_okButton->setToolTip(i18n("Variable name can contain letters, digits and '_' only and should start with a letter"));
				m_okButton->setEnabled(false);
				return;
			}
		}
	}

	m_okButton->setToolTip(i18n("Generate function values"));
	m_okButton->setEnabled(true);
}

void FunctionValuesDialog::showConstants() {
	QMenu menu;