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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms and
** conditions see http://www.qt.io/terms-conditions. For further information
** use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "classnamevalidatinglineedit.h"
#include <utils/qtcassert.h>
#include <QDebug>
#include <QRegExp>
/*!
\class Utils::ClassNameValidatingLineEdit
\brief The ClassNameValidatingLineEdit class implements a line edit that
validates a C++ class name and emits a signal
to derive suggested file names from it.
*/
namespace Utils {
struct ClassNameValidatingLineEditPrivate {
ClassNameValidatingLineEditPrivate();
QRegExp m_nameRegexp;
QString m_namespaceDelimiter;
bool m_namespacesEnabled;
bool m_lowerCaseFileName;
bool m_forceFirstCapitalLetter;
};
// Match something like "Namespace1::Namespace2::ClassName".
ClassNameValidatingLineEditPrivate:: ClassNameValidatingLineEditPrivate() :
m_namespaceDelimiter(QLatin1String("::")),
m_namespacesEnabled(false),
m_lowerCaseFileName(true),
m_forceFirstCapitalLetter(false)
{
}
// --------------------- ClassNameValidatingLineEdit
ClassNameValidatingLineEdit::ClassNameValidatingLineEdit(QWidget *parent) :
FancyLineEdit(parent),
d(new ClassNameValidatingLineEditPrivate)
{
updateRegExp();
}
ClassNameValidatingLineEdit::~ClassNameValidatingLineEdit()
{
delete d;
}
bool ClassNameValidatingLineEdit::namespacesEnabled() const
{
return d->m_namespacesEnabled;
}
void ClassNameValidatingLineEdit::setNamespacesEnabled(bool b)
{
d->m_namespacesEnabled = b;
}
/**
* @return Language-specific namespace delimiter, e.g. '::' or '.'
*/
QString ClassNameValidatingLineEdit::namespaceDelimiter()
{
return d->m_namespaceDelimiter;
}
/**
* @brief Sets language-specific namespace delimiter, e.g. '::' or '.'
* Do not use identifier characters in delimiter
*/
void ClassNameValidatingLineEdit::setNamespaceDelimiter(const QString &delimiter)
{
d->m_namespaceDelimiter = delimiter;
}
bool ClassNameValidatingLineEdit::validate(const QString &value, QString *errorMessage) const
{
QTC_ASSERT(d->m_nameRegexp.isValid(), return false);
if (!d->m_namespacesEnabled && value.contains(d->m_namespaceDelimiter)) {
if (errorMessage)
*errorMessage = tr("The class name must not contain namespace delimiters.");
return false;
} else if (value.isEmpty()) {
if (errorMessage)
*errorMessage = tr("Please enter a class name.");
return false;
} else if (!d->m_nameRegexp.exactMatch(value)) {
if (errorMessage)
*errorMessage = tr("The class name contains invalid characters.");
return false;
}
return true;
}
void ClassNameValidatingLineEdit::handleChanged(const QString &t)
{
if (isValid()) {
// Suggest file names, strip namespaces
QString fileName = d->m_lowerCaseFileName ? t.toLower() : t;
if (d->m_namespacesEnabled) {
const int namespaceIndex = fileName.lastIndexOf(d->m_namespaceDelimiter);
if (namespaceIndex != -1)
fileName.remove(0, namespaceIndex + d->m_namespaceDelimiter.size());
}
emit updateFileName(fileName);
}
}
QString ClassNameValidatingLineEdit::fixInputString(const QString &string)
{
if (!forceFirstCapitalLetter())
return string;
QString fixedString = string;
if (!string.isEmpty() && string.at(0).isLower())
fixedString[0] = string.at(0).toUpper();
return fixedString;
}
void ClassNameValidatingLineEdit::updateRegExp() const
{
const QString pattern(QLatin1String("%1(%2%1)*"));
d->m_nameRegexp.setPattern(pattern.arg(QLatin1String("[a-zA-Z_][a-zA-Z0-9_]*"))
.arg(QRegExp::escape(d->m_namespaceDelimiter)));
}
QString ClassNameValidatingLineEdit::createClassName(const QString &name)
{
// Remove spaces and convert the adjacent characters to uppercase
QString className = name;
QRegExp spaceMatcher(QLatin1String(" +(\\w)"), Qt::CaseSensitive, QRegExp::RegExp2);
QTC_CHECK(spaceMatcher.isValid());
int pos;
while ((pos = spaceMatcher.indexIn(className)) != -1) {
className.replace(pos, spaceMatcher.matchedLength(),
spaceMatcher.cap(1).toUpper());
}
// Filter out any remaining invalid characters
className.remove(QRegExp(QLatin1String("[^a-zA-Z0-9_]")));
// If the first character is numeric, prefix the name with a "_"
if (className.at(0).isNumber()) {
className.prepend(QLatin1Char('_'));
} else {
// Convert the first character to uppercase
className.replace(0, 1, className.left(1).toUpper());
}
return className;
}
bool ClassNameValidatingLineEdit::lowerCaseFileName() const
{
return d->m_lowerCaseFileName;
}
void ClassNameValidatingLineEdit::setLowerCaseFileName(bool v)
{
d->m_lowerCaseFileName = v;
}
bool ClassNameValidatingLineEdit::forceFirstCapitalLetter() const
{
return d->m_forceFirstCapitalLetter;
}
void ClassNameValidatingLineEdit::setForceFirstCapitalLetter(bool b)
{
d->m_forceFirstCapitalLetter = b;
}
} // namespace Utils
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