Assembly: Introduce 'Exploded Views'

src/Mod/Assembly/Gui/ViewProviderViewGroup.h

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+// SPDX-License-Identifier: LGPL-2.1-or-later
+/****************************************************************************
+ *                                                                          *
+ *   Copyright (c) 2023 Ondsel <development@ondsel.com>                     *
+ *                                                                          *
+ *   This file is part of FreeCAD.                                          *
+ *                                                                          *
+ *   FreeCAD is free software: you can redistribute it and/or modify it     *
+ *   under the terms of the GNU Lesser General Public License as            *
+ *   published by the Free Software Foundation, either version 2.1 of the   *
+ *   License, or (at your option) any later version.                        *
+ *                                                                          *
+ *   FreeCAD is distributed in the hope that it will be useful, but         *
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of             *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
+ *   Lesser General Public License for more details.                        *
+ *                                                                          *
+ *   You should have received a copy of the GNU Lesser General Public       *
+ *   License along with FreeCAD. If not, see                                *
+ *   <https://www.gnu.org/licenses/>.                                       *
+ *                                                                          *
+ ***************************************************************************/
+
+#ifndef ASSEMBLYGUI_VIEWPROVIDER_ViewProviderViewGroup_H
+#define ASSEMBLYGUI_VIEWPROVIDER_ViewProviderViewGroup_H
+
+#include <Mod/Assembly/AssemblyGlobal.h>
+
+#include <Gui/ViewProviderDocumentObjectGroup.h>
+
+
+namespace AssemblyGui
+{
+
+class AssemblyGuiExport ViewProviderViewGroup: public Gui::ViewProviderDocumentObjectGroup
+{
+    PROPERTY_HEADER_WITH_OVERRIDE(AssemblyGui::ViewProviderViewGroup);
+
+public:
+    ViewProviderViewGroup();
+    ~ViewProviderViewGroup() override;
+
+    /// deliver the icon shown in the tree view. Override from ViewProvider.h
+    QIcon getIcon() const override;
+
+    // Prevent dragging of the joints and dropping things inside the joint group.
+    bool canDragObjects() const override
+    {
+        return false;
+    };
+    bool canDropObjects() const override
+    {
+        return false;
+    };
+    bool canDragAndDropObject(App::DocumentObject*) const override
+    {
+        return false;
+    };
+
+    // protected:
+    /// get called by the container whenever a property has been changed
+    // void onChanged(const App::Property* prop) override;
+};
+
+}  // namespace AssemblyGui
+
+#endif  // ASSEMBLYGUI_VIEWPROVIDER_ViewProviderViewGroup_H