Make C++ code style configurable.

Change-Id: Iaf08edb2361146e6b5e1cbafdb716a23c938875b
Done-with: Jarek Kobus
Task-number: QTCREATORBUG-2670
Task-number: QTCREATORBUG-4310
Task-number: QTCREATORBUG-2763
Task-number: QTCREATORBUG-3623
Task-number: QTCREATORBUG-567
Reviewed-on: http://codereview.qt.nokia.com/74
Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@nokia.com>
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

src/plugins/cpptools/cppcodestylepreferences.cpp

@@ -0,0 +1,86 @@
+#include "cppcodestylepreferences.h"
+
+using namespace CppTools;
+
+static const char *settingsSuffixKey = "CodeStyleSettings";
+
+static const char *currentFallbackKey = "CurrentFallback";
+
+CppCodeStylePreferences::CppCodeStylePreferences(const QList<TextEditor::IFallbackPreferences *> &fallbacks, QObject *parent) :
+    IFallbackPreferences(fallbacks, parent)
+{
+    connect(this, SIGNAL(currentValueChanged(QVariant)),
+            this, SLOT(slotCurrentValueChanged(QVariant)));
+}
+
+QVariant CppCodeStylePreferences::value() const
+{
+    QVariant v;
+    v.setValue(settings());
+    return v;
+}
+
+void CppCodeStylePreferences::setValue(const QVariant &data)
+{
+    if (!data.canConvert<CppCodeStyleSettings>())
+        return;
+
+    setSettings(data.value<CppCodeStyleSettings>());
+}
+
+CppCodeStyleSettings CppCodeStylePreferences::settings() const
+{
+    return m_data;
+}
+
+void CppCodeStylePreferences::setSettings(const CppCodeStyleSettings &data)
+{
+    if (m_data == data)
+        return;
+
+    m_data = data;
+
+    QVariant v;
+    v.setValue(data);
+    emit valueChanged(v);
+    emit settingsChanged(m_data);
+    if (!currentFallback()) {
+        emit currentValueChanged(v);
+    }
+}
+
+CppCodeStyleSettings CppCodeStylePreferences::currentSettings() const
+{
+    QVariant v = currentValue();
+    if (!v.canConvert<CppCodeStyleSettings>()) {
+        // warning
+        return CppCodeStyleSettings();
+    }
+    return v.value<CppCodeStyleSettings>();
+}
+
+void CppCodeStylePreferences::slotCurrentValueChanged(const QVariant &value)
+{
+    if (!value.canConvert<CppCodeStyleSettings>())
+        return;
+
+    emit currentSettingsChanged(value.value<CppCodeStyleSettings>());
+}
+
+QString CppCodeStylePreferences::settingsSuffix() const
+{
+    return settingsSuffixKey;
+}
+
+void CppCodeStylePreferences::toMap(const QString &prefix, QVariantMap *map) const
+{
+    m_data.toMap(prefix, map);
+    map->insert(prefix + QLatin1String(currentFallbackKey), currentFallbackId());
+}
+
+void CppCodeStylePreferences::fromMap(const QString &prefix, const QVariantMap &map)
+{
+    m_data.fromMap(prefix, map);
+    setCurrentFallback(map.value(prefix + QLatin1String(currentFallbackKey), QLatin1String("Global")).toString());
+}
+