ModelEditor: Refactor ComponentViewController

Move some generic code into separate controllers for later reuse.

Change-Id: Idc0df32e6efe6d8618f556619fa956aded568119
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/modeleditor/packageviewcontroller.h

@@ -0,0 +1,61 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 Jochen Becher
+** 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 <QObject>
+
+namespace qmt {
+class MObject;
+class ModelController;
+}
+
+namespace ModelEditor {
+namespace Internal {
+
+class ModelUtilities;
+
+class PackageViewController : public QObject
+{
+    Q_OBJECT
+    class PackageViewControllerPrivate;
+
+public:
+    explicit PackageViewController(QObject *parent = nullptr);
+    ~PackageViewController();
+
+    void setModelController(qmt::ModelController *modelController);
+    void setModelUtilities(ModelUtilities *modelUtilities);
+
+    void createAncestorDependencies(qmt::MObject *object1, qmt::MObject *object2);
+
+private:
+    bool haveMatchingStereotypes(const qmt::MObject *object1, const qmt::MObject *object2);
+
+    PackageViewControllerPrivate *d;
+};
+
+} // namespace Internal
+} // namespace ModelEditor