add method to activate 3d view when setting active object list

src/Gui/Application.cpp

@@ -279,15 +279,6 @@ struct PyMethodDef FreeCADGui_methods[] = {
     {NULL, NULL, 0, NULL}  /* sentinel */
 };
 
-
-Gui::MDIView* Application::activeView(void) const
-{
-    if (activeDocument())
-        return activeDocument()->getActiveView();
-    else
-        return NULL;
-}
-
 } // namespace Gui
 
 Application::Application(bool GUIenabled)
@@ -812,6 +803,37 @@ bool Application::sendHasMsgToActiveView(const char* pMsg)
     return pView ? pView->onHasMsg(pMsg) : false;
 }
 
+Gui::MDIView* Application::activeView(void) const
+{
+    if (activeDocument())
+        return activeDocument()->getActiveView();
+    else
+        return NULL;
+}
+
+/**
+ * @brief Application::activateView
+ * Activates a view of the given type of the active document.
+ * If a view of this type doesn't exist and \a create is true
+ * a new view of this type will be created.
+ * @param type
+ * @param create
+ */
+void Application::activateView(const Base::Type& type, bool create)
+{
+    Document* doc = activeDocument();
+    if (doc) {
+        MDIView* mdiView = doc->getActiveView();
+        if (mdiView && mdiView->isDerivedFrom(type))
+            return;
+        std::list<MDIView*> mdiViews = doc->getMDIViewsOfType(type);
+        if (!mdiViews.empty())
+            doc->setActiveWindow(mdiViews.back());
+        else if (create)
+            doc->createView(type);
+    }
+}
+
 /// Getter for the active view
 Gui::Document* Application::activeDocument(void) const
 {