Clang: Introduce switching/adding of warning configurations

A warning configuration is a list of command line (warning) options for
libclang. Three non-editable built-in configurations are provided by
default. The user can copy a configuration to customize it.

This is still a global setting and it changes take effect after
re-opening a document. Both issues will be addressed in follow-up
changes.

Change-Id: I86667d7dc39ad31b88666454220e6da563797740
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

src/plugins/cpptools/clangdiagnosticconfigswidget.h

@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "clangdiagnosticconfig.h"
+#include "clangdiagnosticconfigsmodel.h"
+
+#include <QWidget>
+
+namespace CppTools {
+namespace Internal {
+
+namespace Ui { class ClangDiagnosticConfigsWidget; }
+
+class ClangDiagnosticConfigsWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ClangDiagnosticConfigsWidget(const ClangDiagnosticConfigs &customConfigs,
+                                          const Core::Id &configToSelect,
+                                          QWidget *parent = 0);
+
+    Core::Id currentConfigId() const;
+    ClangDiagnosticConfigs customConfigs() const;
+
+    ~ClangDiagnosticConfigsWidget();
+
+private slots:
+    void onCurrentConfigChanged(int);
+    void onCopyButtonClicked();
+    void onRemoveButtonClicked();
+
+    void onDiagnosticOptionsEdited();
+
+private:
+    void syncWidgetsToModel(const Core::Id &configToSelect = Core::Id());
+    void syncConfigChooserToModel(const Core::Id &configToSelect = Core::Id());
+    void syncOtherWidgetsToComboBox();
+
+    bool isConfigChooserEmpty() const;
+    const ClangDiagnosticConfig &currentConfig() const;
+
+private:
+    Ui::ClangDiagnosticConfigsWidget *m_ui;
+    ClangDiagnosticConfigsModel m_diagnosticConfigsModel;
+};
+
+} // Internal namespace
+} // CppTools namespace