Initial import

src/libs/utils/classnamevalidatinglineedit.cpp

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+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+** 
+** Non-Open Source Usage  
+** 
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.  
+** 
+** GNU General Public License Usage 
+** 
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception version
+** 1.2, included in the file GPL_EXCEPTION.txt in this package.  
+** 
+***************************************************************************/
+#include "classnamevalidatinglineedit.h"
+
+#include <QtCore/QDebug>
+#include <QtCore/QRegExp>
+
+namespace Core {
+namespace Utils {
+
+struct ClassNameValidatingLineEditPrivate {
+    ClassNameValidatingLineEditPrivate();
+
+    const QRegExp m_nameRegexp;
+    const QString m_namespaceDelimiter;
+    bool m_namespacesEnabled;
+};
+
+// Match something like "Namespace1::Namespace2::ClassName".
+ClassNameValidatingLineEditPrivate:: ClassNameValidatingLineEditPrivate() :
+    m_nameRegexp(QLatin1String("[a-zA-Z_][a-zA-Z0-9_]*(::[a-zA-Z_][a-zA-Z0-9_]*)*")),
+    m_namespaceDelimiter(QLatin1String("::")),
+    m_namespacesEnabled(false)
+{
+    Q_ASSERT(m_nameRegexp.isValid());
+}
+
+// --------------------- ClassNameValidatingLineEdit
+ClassNameValidatingLineEdit::ClassNameValidatingLineEdit(QWidget *parent) :
+    Core::Utils::BaseValidatingLineEdit(parent),
+    m_d(new ClassNameValidatingLineEditPrivate)
+{
+}
+
+ClassNameValidatingLineEdit::~ClassNameValidatingLineEdit()
+{
+    delete m_d;
+}
+
+bool ClassNameValidatingLineEdit::namespacesEnabled() const
+{
+    return m_d->m_namespacesEnabled;
+}
+
+void ClassNameValidatingLineEdit::setNamespacesEnabled(bool b)
+{
+    m_d->m_namespacesEnabled = b;
+}
+
+bool ClassNameValidatingLineEdit::validate(const QString &value, QString *errorMessage) const
+{
+    if (!m_d->m_namespacesEnabled && value.contains(QLatin1Char(':'))) {
+        if (errorMessage)
+            *errorMessage = tr("The class name must not contain namespace delimiters.");
+        return false;
+    }
+    if (!m_d->m_nameRegexp.exactMatch(value)) {
+        if (errorMessage)
+            *errorMessage = tr("The class name contains invalid characters.");
+        return false;
+    }
+    return true;
+}
+
+void ClassNameValidatingLineEdit::slotChanged(const QString &t)
+{
+    Core::Utils::BaseValidatingLineEdit::slotChanged(t);
+    if (isValid()) {
+        // Suggest file names, strip namespaces
+        QString fileName = t.toLower();
+        if (m_d->m_namespacesEnabled) {
+            const int namespaceIndex = fileName.lastIndexOf(m_d->m_namespaceDelimiter);
+            if (namespaceIndex != -1)
+                fileName.remove(0, namespaceIndex + m_d->m_namespaceDelimiter.size());
+        }
+        emit updateFileName(fileName);
+    }
+}
+
+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);
+    Q_ASSERT(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;
+}
+
+}
+}