Moved the mouse navigation option to the Behaviour settings page

It used to be hidden on the Display settings page.

Task-number: QTCREATORBUG-135

src/plugins/texteditor/behaviorsettings.cpp

@@ -0,0 +1,74 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "behaviorsettings.h"
+
+#include <QtCore/QSettings>
+#include <QtCore/QString>
+
+static const char * const mouseNavigationKey = "MouseNavigation";
+static const char * const groupPostfix = "BehaviorSettings";
+
+namespace TextEditor {
+
+BehaviorSettings::BehaviorSettings() :
+    m_mouseNavigation(true)
+{
+}
+
+void BehaviorSettings::toSettings(const QString &category, QSettings *s) const
+{
+    QString group = QLatin1String(groupPostfix);
+    if (!category.isEmpty())
+        group.insert(0, category);
+    s->beginGroup(group);
+    s->setValue(QLatin1String(mouseNavigationKey), m_mouseNavigation);
+    s->endGroup();
+}
+
+void BehaviorSettings::fromSettings(const QString &category, const QSettings *s)
+{
+    QString group = QLatin1String(groupPostfix);
+    if (!category.isEmpty())
+        group.insert(0, category);
+    group += QLatin1Char('/');
+
+    *this = BehaviorSettings(); // Assign defaults
+
+    m_mouseNavigation = s->value(group + QLatin1String(mouseNavigationKey), m_mouseNavigation).toBool();
+}
+
+bool BehaviorSettings::equals(const BehaviorSettings &ds) const
+{
+    return m_mouseNavigation == ds.m_mouseNavigation
+        ;
+}
+
+} // namespace TextEditor
+