Clang: Add refactoring project updater

The project parts are now first used by the pch manager and then notified
by the pch manager to the refactoring plugin.

Change-Id: I88074d8891cd0de9721497bbafee0deffc0b6339
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>

src/plugins/cpptools/cppmodelmanager.h

@@ -27,6 +27,7 @@
 
 #include "cpptools_global.h"
 
+#include "cppmodelmanagerinterface.h"
 #include "refactoringengineinterface.h"
 #include "projectinfo.h"
 #include "projectpart.h"
@@ -83,7 +84,8 @@ enum class RefactoringEngineType : int
 };
 
 class CPPTOOLS_EXPORT CppModelManager final : public CPlusPlus::CppModelManagerBase,
-        public RefactoringEngineInterface
+        public RefactoringEngineInterface,
+        public CppModelManagerInterface
 {
     Q_OBJECT
 

src/plugins/cpptools/cppmodelmanagerinterface.h

@@ -0,0 +1,40 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 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 "projectpart.h"
+
+namespace CppTools {
+
+class CppModelManagerInterface
+{
+public:
+    virtual ProjectPart::Ptr projectPartForId(const QString &projectPartId) const = 0;
+
+protected:
+    ~CppModelManagerInterface() = default;
+};
+}

src/plugins/cpptools/cpptools.pro

@@ -100,7 +100,8 @@ HEADERS += \
     cursorineditor.h \
     wrappablelineedit.h \
     usages.h \
-    cpptools_clangtidychecks.h
+    cpptools_clangtidychecks.h \
+    cppmodelmanagerinterface.h
 
 SOURCES += \
     abstracteditorsupport.cpp \