void TaskPadParameters::onButtonFace(const bool pressed) {
    PartDesign::Pad* pcPad = static_cast<PartDesign::Pad*>(PadView->getObject());
    Part::Feature* support = pcPad->getSupport();
    if (support == NULL) {
        // There is no support, so we can't select from it...
        return;
    }

    if (pressed) {
        Gui::Document* doc = Gui::Application::Instance->activeDocument();
        if (doc) {
            doc->setHide(PadView->getObject()->getNameInDocument());
            doc->setShow(support->getNameInDocument());
        }
        Gui::Selection().clearSelection();
        Gui::Selection().addSelectionGate
            (new ReferenceSelection(support, false, true, false));
    } else {
        Gui::Selection().rmvSelectionGate();
        Gui::Document* doc = Gui::Application::Instance->activeDocument();
        if (doc) {
            doc->setShow(PadView->getObject()->getNameInDocument());
            doc->setHide(support->getNameInDocument());
        }
    }

    // Update button if onButtonFace() is called explicitly
    ui->buttonFace->setChecked(pressed);
}

void DlgExtrusion::findShapes()
{
    App::Document* activeDoc = App::GetApplication().getActiveDocument();
    if (!activeDoc) return;
    Gui::Document* activeGui = Gui::Application::Instance->getDocument(activeDoc);
    this->document = activeDoc->getName();
    this->label = activeDoc->Label.getValue();

    std::vector<App::DocumentObject*> objs = activeDoc->getObjectsOfType
        (Part::Feature::getClassTypeId());
    for (std::vector<App::DocumentObject*>::iterator it = objs.begin(); it!=objs.end(); ++it) {
        const TopoDS_Shape& shape = static_cast<Part::Feature*>(*it)->Shape.getValue();
        if (canExtrude(shape)) {
            QTreeWidgetItem* item = new QTreeWidgetItem(ui->treeWidget);
            item->setText(0, QString::fromUtf8((*it)->Label.getValue()));
            item->setData(0, Qt::UserRole, QString::fromLatin1((*it)->getNameInDocument()));
            Gui::ViewProvider* vp = activeGui->getViewProvider(*it);
            if (vp)
                item->setIcon(0, vp->getIcon());
        }
    }
}

void CmdPointsPolyCut::activated(int iMsg)
{
    std::vector<App::DocumentObject*> docObj = Gui::Selection().getObjectsOfType(Points::Feature::getClassTypeId());
    for (std::vector<App::DocumentObject*>::iterator it = docObj.begin(); it != docObj.end(); ++it) {
        if (it == docObj.begin()) {
            Gui::Document* doc = getActiveGuiDocument();
            Gui::MDIView* view = doc->getActiveView();
            if (view->getTypeId().isDerivedFrom(Gui::View3DInventor::getClassTypeId())) {
                Gui::View3DInventorViewer* viewer = ((Gui::View3DInventor*)view)->getViewer();
                viewer->setEditing(true);
                viewer->startSelection(Gui::View3DInventorViewer::Lasso);
                viewer->addEventCallback(SoMouseButtonEvent::getClassTypeId(), PointsGui::ViewProviderPoints::clipPointsCallback);
            }
            else {
                return;
            }
        }

        Gui::ViewProvider* pVP = getActiveGuiDocument()->getViewProvider( *it );
        pVP->startEditing();
    }
}

void StdCmdDelete::activated(int iMsg)
{
    // go through all documents
    const SelectionSingleton& rSel = Selection();
    const std::vector<App::Document*> docs = App::GetApplication().getDocuments();
    for (std::vector<App::Document*>::const_iterator it = docs.begin(); it != docs.end(); ++it) {
        Gui::Document* pGuiDoc = Gui::Application::Instance->getDocument(*it);
        std::vector<Gui::SelectionObject> sel = rSel.getSelectionEx((*it)->getName());
        if (!sel.empty()) {
            (*it)->openTransaction("Delete");
            for (std::vector<Gui::SelectionObject>::iterator ft = sel.begin(); ft != sel.end(); ++ft) {
                Gui::ViewProvider* vp = pGuiDoc->getViewProvider(ft->getObject());
                if (vp) {
                    // ask the ViewProvider if its want to do some clean up
                    if (vp->onDelete(ft->getSubNames()))
                        doCommand(Doc,"App.getDocument(\"%s\").removeObject(\"%s\")"
                                  ,(*it)->getName(), ft->getFeatName());
                }
            }
            (*it)->commitTransaction();
        }
    }
}

    Py::Object interactiveFilletArc(const Py::Tuple& args)
    {
        Gui::Document* doc = Gui::Application::Instance->activeDocument();
        if (doc) {
            Gui::View3DInventor* view = qobject_cast<Gui::View3DInventor*>(doc->getActiveView());
            if (view) {
                Gui::View3DInventorViewer* viewer = view->getViewer();
                SoSeparator* scene = static_cast<SoSeparator*>(viewer->getSceneGraph());
                SoSeparator* node = new SoSeparator();
                SoBaseColor* rgb = new SoBaseColor();
                rgb->rgb.setValue(1,1,0);
                node->addChild(rgb);
                SoCoordinate3* coords = new SoCoordinate3();
                node->addChild(coords);
                node->addChild(new SoLineSet());
                scene->addChild(node);

                ObjectObserver* obs = new ObjectObserver(doc->getDocument()->getActiveObject(), coords);
                obs->attachDocument(doc->getDocument());
            }
        }
        return Py::None();
    }

void CmdFemDefineNodesSet::activated(int iMsg)
{
    std::vector<App::DocumentObject*> docObj = Gui::Selection().getObjectsOfType(Fem::FemMeshObject::getClassTypeId());

    for (std::vector<App::DocumentObject*>::iterator it = docObj.begin(); it != docObj.end(); ++it) {
        if (it == docObj.begin()) {
            Gui::Document* doc = getActiveGuiDocument();
            Gui::MDIView* view = doc->getActiveView();
            if (view->getTypeId().isDerivedFrom(Gui::View3DInventor::getClassTypeId())) {
                Gui::View3DInventorViewer* viewer = ((Gui::View3DInventor*)view)->getViewer();
                viewer->setEditing(true);
                viewer->startSelection(Gui::View3DInventorViewer::Clip);
                viewer->addEventCallback(SoMouseButtonEvent::getClassTypeId(), DefineNodesCallback);
            }
            else {
                return;
            }
        }

        //Gui::ViewProvider* pVP = getActiveGuiDocument()->getViewProvider(*it);
        //if (pVP->isVisible())
        //    pVP->startEditing();
    }
}

void Placement::revertTransformation()
{
    for (std::set<std::string>::iterator it = documents.begin(); it != documents.end(); ++it) {
        Gui::Document* document = Application::Instance->getDocument(it->c_str());
        if (!document) continue;

        std::vector<App::DocumentObject*> obj = document->getDocument()->
            getObjectsOfType(App::DocumentObject::getClassTypeId());
        if (!obj.empty()) {
            for (std::vector<App::DocumentObject*>::iterator it=obj.begin();it!=obj.end();++it) {
                std::map<std::string,App::Property*> props;
                (*it)->getPropertyMap(props);
                // search for the placement property
                std::map<std::string,App::Property*>::iterator jt;
                jt = std::find_if(props.begin(), props.end(), find_placement(this->propertyName));
                if (jt != props.end()) {
                    Base::Placement cur = static_cast<App::PropertyPlacement*>(jt->second)->getValue();
                    Gui::ViewProvider* vp = document->getViewProvider(*it);
                    if (vp) vp->setTransformation(cur.toMatrix());
                }
            }
        }
    }
}

void DlgEvaluateMeshImp::on_repairDuplicatedPointsButton_clicked()
{
    if (d->meshFeature) {
        const char* docName = App::GetApplication().getDocumentName(d->meshFeature->getDocument());
        const char* objName = d->meshFeature->getNameInDocument();
        Gui::Document* doc = Gui::Application::Instance->getDocument(docName);
        doc->openCommand("Remove duplicated points");
        try {
            Gui::Application::Instance->runCommand(
                true, "App.getDocument(\"%s\").getObject(\"%s\").removeDuplicatedPoints()"
                    , docName, objName);
        }
        catch (const Base::Exception& e) {
            QMessageBox::warning(this, tr("Duplicated points"), QString::fromLatin1(e.what()));
        }

        doc->commitCommand();
        doc->getDocument()->recompute();
    
        repairDuplicatedPointsButton->setEnabled(false);
        checkDuplicatedPointsButton->setChecked(false);
        removeViewProvider("MeshGui::ViewProviderMeshDuplicatedPoints");
    }
}

void CmdSketcherLeaveSketch::activated(int iMsg)
{
    Gui::Document *doc = getActiveGuiDocument();
    
    if (doc) {
        // checks if a Sketch Viewprovider is in Edit and is in no special mode
        SketcherGui::ViewProviderSketch* vp = dynamic_cast<SketcherGui::ViewProviderSketch*>(doc->getInEdit());
        if (vp && vp->getSketchMode() != ViewProviderSketch::STATUS_NONE)
            vp->purgeHandler();
    }
    
    openCommand("Sketch changed");
    doCommand(Gui,"Gui.activeDocument().resetEdit()");
    doCommand(Doc,"App.ActiveDocument.recompute()");
    commitCommand();

}

bool DrawingView::onMsg(const char* pMsg, const char** ppReturn)
{
    if (strcmp("ViewFit",pMsg) == 0) {
        viewAll();
        return true;
    }
    else if (strcmp("Save",pMsg) == 0) {
        Gui::Document *doc = getGuiDocument();
        if (doc) {
            doc->save();
            return true;
        }
    }
    else if (strcmp("SaveAs",pMsg) == 0) {
        Gui::Document *doc = getGuiDocument();
        if (doc) {
            doc->saveAs();
            return true;
        }
    }
    else  if(strcmp("Undo",pMsg) == 0 ) {
        Gui::Document *doc = getGuiDocument();
        if (doc) {
            doc->undo(1);
            return true;
        }
    }
    else  if(strcmp("Redo",pMsg) == 0 ) {
        Gui::Document *doc = getGuiDocument();
        if (doc) {
            doc->redo(1);
            return true;
        }
    }
    return false;
}

bool SweepWidget::accept()
{
    if (d->loop.isRunning())
        return false;
    Gui::SelectionFilter edgeFilter  ("SELECT Part::Feature SUBELEMENT Edge COUNT 1..");
    Gui::SelectionFilter partFilter  ("SELECT Part::Feature COUNT 1");
    bool matchEdge = edgeFilter.match();
    bool matchPart = partFilter.match();
    if (!matchEdge && !matchPart) {
        QMessageBox::critical(this, tr("Sweep path"), tr("Select one or more connected edges you want to sweep along."));
        return false;
    }

    // get the selected object
    std::string selection;
    std::string spineObject, spineLabel;
    const std::vector<Gui::SelectionObject>& result = matchEdge
        ? edgeFilter.Result[0] : partFilter.Result[0];
    selection = result.front().getAsPropertyLinkSubString();
    spineObject = result.front().getFeatName();
    spineLabel = result.front().getObject()->Label.getValue();

    QString list, solid, frenet;
    if (d->ui.checkSolid->isChecked())
        solid = QString::fromLatin1("True");
    else
        solid = QString::fromLatin1("False");

    if (d->ui.checkFrenet->isChecked())
        frenet = QString::fromLatin1("True");
    else
        frenet = QString::fromLatin1("False");

    QTextStream str(&list);

    int count = d->ui.selector->selectedTreeWidget()->topLevelItemCount();
    if (count < 1) {
        QMessageBox::critical(this, tr("Too few elements"), tr("At least one edge or wire is required."));
        return false;
    }
    for (int i=0; i<count; i++) {
        QTreeWidgetItem* child = d->ui.selector->selectedTreeWidget()->topLevelItem(i);
        QString name = child->data(0, Qt::UserRole).toString();
        if (name == QLatin1String(spineObject.c_str())) {
            QMessageBox::critical(this, tr("Wrong selection"), tr("'%1' cannot be used as profile and path.")
                .arg(QString::fromUtf8(spineLabel.c_str())));
            return false;
        }
        str << "App.getDocument('" << d->document.c_str() << "')." << name << ", ";
    }

    try {
        Gui::WaitCursor wc;
        QString cmd;
        cmd = QString::fromLatin1(
            "App.getDocument('%5').addObject('Part::Sweep','Sweep')\n"
            "App.getDocument('%5').ActiveObject.Sections=[%1]\n"
            "App.getDocument('%5').ActiveObject.Spine=%2\n"
            "App.getDocument('%5').ActiveObject.Solid=%3\n"
            "App.getDocument('%5').ActiveObject.Frenet=%4\n"
            )
            .arg(list)
            .arg(QLatin1String(selection.c_str()))
            .arg(solid)
            .arg(frenet)
            .arg(QString::fromLatin1(d->document.c_str()));

        Gui::Document* doc = Gui::Application::Instance->getDocument(d->document.c_str());
        if (!doc) throw Base::Exception("Document doesn't exist anymore");
        doc->openCommand("Sweep");
        Gui::Application::Instance->runPythonCode((const char*)cmd.toLatin1(), false, false);
        doc->getDocument()->recompute();
        App::DocumentObject* obj = doc->getDocument()->getActiveObject();
        if (obj && !obj->isValid()) {
            std::string msg = obj->getStatusString();
            doc->abortCommand();
            throw Base::Exception(msg);
        }
        doc->commitCommand();
    }
    catch (const Base::Exception& e) {
        QMessageBox::warning(this, tr("Input error"), QString::fromLatin1(e.what()));
        return false;
    }

    return true;
}

/**
 *  Constructs a VisualInspection as a child of 'parent', with the
 *  name 'name' and widget flags set to 'f'.
 */
VisualInspection::VisualInspection(QWidget* parent, Qt::WindowFlags fl)
    : QDialog(parent, fl), ui(new Ui_VisualInspection)
{
    ui->setupUi(this);
    connect(ui->treeWidgetActual, SIGNAL(itemClicked(QTreeWidgetItem*, int)), 
            this, SLOT(onActivateItem(QTreeWidgetItem*)));
    connect(ui->treeWidgetNominal, SIGNAL(itemClicked(QTreeWidgetItem*, int)), 
            this, SLOT(onActivateItem(QTreeWidgetItem*)));
    connect(ui->buttonBox, SIGNAL(helpRequested()),
            Gui::getMainWindow(), SLOT(whatsThis()));

    //FIXME: Not used yet
    ui->textLabel2->hide();
    ui->thickness->hide();
    ui->searchRadius->setUnit(Base::Unit::Length);
    ui->searchRadius->setRange(0, DBL_MAX);
    ui->thickness->setUnit(Base::Unit::Length);
    ui->thickness->setRange(0, DBL_MAX);

    App::Document* doc = App::GetApplication().getActiveDocument();
    // disable Ok button and enable of at least one item in each view is on
    buttonOk = ui->buttonBox->button(QDialogButtonBox::Ok);
    buttonOk->setDisabled(true);

    if (!doc) {
        ui->treeWidgetActual->setDisabled(true);
        ui->treeWidgetNominal->setDisabled(true);
        return;
    }

    Gui::Document* gui = Gui::Application::Instance->getDocument(doc);

    std::vector<App::DocumentObject*> obj = doc->getObjects();
    Base::Type point = Base::Type::fromName("Points::Feature");
    Base::Type mesh  = Base::Type::fromName("Mesh::Feature");
    Base::Type shape = Base::Type::fromName("Part::Feature");
    for (std::vector<App::DocumentObject*>::iterator it = obj.begin(); it != obj.end(); ++it) {
        if ((*it)->getTypeId().isDerivedFrom(point) ||
            (*it)->getTypeId().isDerivedFrom(mesh)  ||
            (*it)->getTypeId().isDerivedFrom(shape)) {
            Gui::ViewProvider* view = gui->getViewProvider(*it);
            QIcon px = view->getIcon();
            SingleSelectionItem* item1 = new SingleSelectionItem(ui->treeWidgetActual);
            item1->setText(0, QString::fromUtf8((*it)->Label.getValue()));
            item1->setData(0, Qt::UserRole, QString::fromLatin1((*it)->getNameInDocument()));
            item1->setCheckState(0, Qt::Unchecked);
            item1->setIcon(0, px);

            SingleSelectionItem* item2 = new SingleSelectionItem(ui->treeWidgetNominal);
            item2->setText(0, QString::fromUtf8((*it)->Label.getValue()));
            item2->setData(0, Qt::UserRole, QString::fromLatin1((*it)->getNameInDocument()));
            item2->setCheckState(0, Qt::Unchecked);
            item2->setIcon(0, px);

            item1->setCompetitiveItem(item2);
            item2->setCompetitiveItem(item1);
        }
    }

    loadSettings();
}

void Placement::slotActiveDocument(const Gui::Document& doc)
{
    documents.insert(doc.getDocument()->getName());
}

Gui::MDIView* ViewProviderDocumentObject::getViewOfNode(SoNode* node) const
{
    App::Document* pAppDoc = pcObject->getDocument();
    Gui::Document* pGuiDoc = Gui::Application::Instance->getDocument(pAppDoc);
    return pGuiDoc->getViewOfNode(node);
}

Gui::MDIView* ViewProviderDocumentObject::getEditingView() const
{
    App::Document* pAppDoc = pcObject->getDocument();
    Gui::Document* pGuiDoc = Gui::Application::Instance->getDocument(pAppDoc);
    return pGuiDoc->getEditingViewOfViewProvider(const_cast<ViewProviderDocumentObject*>(this));
}

void PropertyView::onSelectionChanged(const SelectionChanges& msg)
{
    if (msg.Type != SelectionChanges::AddSelection &&
        msg.Type != SelectionChanges::RmvSelection &&
        msg.Type != SelectionChanges::SetSelection &&
        msg.Type != SelectionChanges::ClrSelection)
        return;
    // group the properties by <name,id>
    std::map<std::pair<std::string, int>, std::vector<App::Property*> > propDataMap;
    std::map<std::pair<std::string, int>, std::vector<App::Property*> > propViewMap;
    std::vector<SelectionSingleton::SelObj> array = Gui::Selection().getCompleteSelection();
    for (std::vector<SelectionSingleton::SelObj>::const_iterator it = array.begin(); it != array.end(); ++it) {
        App::DocumentObject *ob=0;
        ViewProvider *vp=0;

        std::map<std::string,App::Property*> dataMap;
        std::map<std::string,App::Property*> viewMap;
        if ((*it).pObject) {
            (*it).pObject->getPropertyMap(dataMap);
            ob = (*it).pObject;

            // get also the properties of the associated view provider
            Gui::Document* doc = Gui::Application::Instance->getDocument(it->pDoc);
            vp = doc->getViewProvider((*it).pObject);
            if(!vp) continue;
            vp->getPropertyMap(viewMap);
        }

        // store the properties with <name,id> as key in a map
        std::map<std::string,App::Property*>::iterator pt;
        if (ob) {
            for (pt = dataMap.begin(); pt != dataMap.end(); ++pt) {
                std::pair<std::string, int> nameType = std::make_pair
                    <std::string, int>(pt->first, pt->second->getTypeId().getKey());
                if (!ob->isHidden(pt->second) && !pt->second->StatusBits.test(3))
                    propDataMap[nameType].push_back(pt->second);
            }
        }
        // the same for the view properties
        if (vp) {
            for(pt = viewMap.begin(); pt != viewMap.end(); ++pt) {
                std::pair<std::string, int> nameType = std::make_pair
                    <std::string, int>( pt->first, pt->second->getTypeId().getKey());
                if (!vp->isHidden(pt->second) && !pt->second->StatusBits.test(3))
                    propViewMap[nameType].push_back(pt->second);
            }
        }
    }

    // the property must be part of each selected object, i.e. the number
    // of selected objects is equal to the number of properties with same
    // name and id
    std::map<std::pair<std::string, int>, std::vector<App::Property*> >
        ::const_iterator it;
    std::map<std::string, std::vector<App::Property*> > dataProps;
    for (it = propDataMap.begin(); it != propDataMap.end(); ++it) {
        if (it->second.size() == array.size()) {
            dataProps[it->first.first] = it->second;
        }
    }
    propertyEditorData->buildUp(dataProps);

    std::map<std::string, std::vector<App::Property*> > viewProps;
    for (it = propViewMap.begin(); it != propViewMap.end(); ++it) {
        if (it->second.size() == array.size()) {
            viewProps[it->first.first] = it->second;
        }
    }
    propertyEditorView->buildUp(viewProps);
}

void VisualInspection::accept()
{
    onActivateItem(0);
    if (buttonOk->isEnabled()) {
        QDialog::accept();
        saveSettings();

        // collect all nominal geometries
        QStringList nominalNames;
        for (QTreeWidgetItemIterator it(ui->treeWidgetNominal); *it; it++) {
            SingleSelectionItem* sel = (SingleSelectionItem*)*it;
            if (sel->checkState(0) == Qt::Checked)
                nominalNames << sel->data(0, Qt::UserRole).toString();
        }

        double searchRadius = ui->searchRadius->value().getValue();
        double thickness = ui->thickness->value().getValue();

        // open a new command
        Gui::Document* doc = Gui::Application::Instance->activeDocument();
        doc->openCommand("Visual Inspection");

        // create a group
        Gui::Command::runCommand(
            Gui::Command::App, "App_activeDocument___InspectionGroup=App.ActiveDocument.addObject(\"Inspection::Group\",\"Inspection\")");
    
        // for each actual geometry create an inspection feature
        for (QTreeWidgetItemIterator it(ui->treeWidgetActual); *it; it++) {
            SingleSelectionItem* sel = (SingleSelectionItem*)*it;
            if (sel->checkState(0) == Qt::Checked) {
                QString actualName = sel->data(0, Qt::UserRole).toString();
                Gui::Command::doCommand(Gui::Command::App,
                    "App_activeDocument___InspectionGroup.newObject(\"Inspection::Feature\",\"%s_Inspect\")", (const char*)actualName.toLatin1());
                Gui::Command::doCommand(Gui::Command::App,
                    "App.ActiveDocument.ActiveObject.Actual=App.ActiveDocument.%s\n"
                    "App_activeDocument___activeObject___Nominals=list()\n"
                    "App.ActiveDocument.ActiveObject.SearchRadius=%.3f\n"
                    "App.ActiveDocument.ActiveObject.Thickness=%.3f\n", (const char*)actualName.toLatin1(), searchRadius, thickness);
                for (QStringList::Iterator it = nominalNames.begin(); it != nominalNames.end(); ++it) {
                    Gui::Command::doCommand(Gui::Command::App,
                        "App_activeDocument___activeObject___Nominals.append(App.ActiveDocument.%s)\n", (const char*)(*it).toLatin1());
                }
                Gui::Command::doCommand(Gui::Command::App,
                    "App.ActiveDocument.ActiveObject.Nominals=App_activeDocument___activeObject___Nominals\n"
                    "del App_activeDocument___activeObject___Nominals\n");
            }
        }

        Gui::Command::runCommand(Gui::Command::App,
            "del App_activeDocument___InspectionGroup\n");

        doc->commitCommand();
        doc->getDocument()->recompute();

        // hide the checked features
        for (QTreeWidgetItemIterator it(ui->treeWidgetActual); *it; it++) {
            SingleSelectionItem* sel = (SingleSelectionItem*)*it;
            if (sel->checkState(0) == Qt::Checked) {
                Gui::Command::doCommand(Gui::Command::App
                    , "Gui.ActiveDocument.getObject(\"%s\").Visibility=False"
                    , (const char*)sel->data(0, Qt::UserRole).toString().toLatin1());
            }
        }

        for (QTreeWidgetItemIterator it(ui->treeWidgetNominal); *it; it++) {
            SingleSelectionItem* sel = (SingleSelectionItem*)*it;
            if (sel->checkState(0) == Qt::Checked) {
                Gui::Command::doCommand(Gui::Command::App
                    , "Gui.ActiveDocument.getObject(\"%s\").Visibility=False"
                    , (const char*)sel->data(0, Qt::UserRole).toString().toLatin1());
            }
        }
    }
}

void CmdPartDesignBody::activated(int iMsg)
{
    Q_UNUSED(iMsg);
    if ( !PartDesignGui::assureModernWorkflow( getDocument() ) )
        return;
    App::Part *actPart = PartDesignGui::getActivePart ();
    App::Part* partOfBaseFeature = nullptr;

    std::vector<App::DocumentObject*> features =
        getSelection().getObjectsOfType(Part::Feature::getClassTypeId());
    App::DocumentObject* baseFeature = nullptr;
    bool viewAll = features.empty();


    if (!features.empty()) {
        if (features.size() == 1) {
            baseFeature = features[0];
            if ( baseFeature->isDerivedFrom ( PartDesign::Feature::getClassTypeId() ) &&
                    PartDesign::Body::findBodyOf ( baseFeature ) ) {
                // Prevent creating bodies based on features already belonging to other bodies
                QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                        QObject::tr("Body can't be based on a PartDesign feature."));
                baseFeature = nullptr;
            }
            else if (PartDesign::Body::findBodyOf ( baseFeature )){
                QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                        QObject::tr("%1 already belongs to a body, can't use it as base feature for another body.")
                                     .arg(QString::fromUtf8(baseFeature->Label.getValue())));
                baseFeature = nullptr;
            }
            else if ( baseFeature->isDerivedFrom ( Part::BodyBase::getClassTypeId() ) )  {
                // Prevent creating bodies based on bodies
                QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                        QObject::tr("Body can't be based on another body."));
                baseFeature = nullptr;
            }
            else {
                partOfBaseFeature = App::Part::getPartOfObject(baseFeature);
                if (partOfBaseFeature != 0  &&  partOfBaseFeature != actPart){
                    //prevent cross-part mess
                    QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                            QObject::tr("Base feature (%1) belongs to other part.")
                                         .arg(QString::fromUtf8(baseFeature->Label.getValue())));
                    baseFeature = nullptr;
                };
            }

        } else {
            QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Bad base feature"),
                QObject::tr("Body may be based no more than on one feature."));
            return;
        }
    }


    openCommand("Add a Body");

    std::string bodyName = getUniqueObjectName("Body");

    // add the Body feature itself, and make it active
    doCommand(Doc,"App.activeDocument().addObject('PartDesign::Body','%s')", bodyName.c_str());
    if (baseFeature) {
        if (partOfBaseFeature){
            //withdraw base feature from Part, otherwise visibility mandess results
            doCommand(Doc,"App.activeDocument().%s.removeObject(App.activeDocument().%s)",
                    partOfBaseFeature->getNameInDocument(), baseFeature->getNameInDocument());
        }
        doCommand(Doc,"App.activeDocument().%s.BaseFeature = App.activeDocument().%s",
                bodyName.c_str(), baseFeature->getNameInDocument());
    }
    addModule(Gui,"PartDesignGui"); // import the Gui module only once a session
    doCommand(Gui::Command::Gui, "Gui.activeView().setActiveObject('%s', App.activeDocument().%s)", 
            PDBODYKEY, bodyName.c_str());

    // Make the "Create sketch" prompt appear in the task panel
    doCommand(Gui,"Gui.Selection.clearSelection()");
    doCommand(Gui,"Gui.Selection.addSelection(App.ActiveDocument.%s)", bodyName.c_str());
    if (actPart) {
        doCommand(Doc,"App.activeDocument().%s.addObject(App.ActiveDocument.%s)",
                 actPart->getNameInDocument(), bodyName.c_str());
    }

    // The method 'SoCamera::viewBoundingBox' is still declared as protected in Coin3d versions
    // older than 4.0.
#if COIN_MAJOR_VERSION >= 4
    // if no part feature was there then auto-adjust the camera
    if (viewAll) {
        Gui::Document* doc = Gui::Application::Instance->getDocument(getDocument());
        Gui::View3DInventor* view = doc ? qobject_cast<Gui::View3DInventor*>(doc->getActiveView()) : nullptr;
        if (view) {
            SoCamera* camera = view->getViewer()->getCamera();
            SbViewportRegion vpregion = view->getViewer()->getViewportRegion();
            float aspectratio = vpregion.getViewportAspectRatio();

            float size = Gui::ViewProviderOrigin::defaultSize();
            SbBox3f bbox;
            bbox.setBounds(-size,-size,-size,size,size,size);
            camera->viewBoundingBox(bbox, aspectratio, 1.0f);
        }
    }
//.........这里部分代码省略.........

void Workbench::slotActiveDocument(const Gui::Document& Doc)
{
    switchToDocument(Doc.getDocument());
}

void ViewProviderBody::updateOriginDatumSize () {
    PartDesign::Body *body = static_cast<PartDesign::Body *> ( getObject() );
    
    // Use different bounding boxes for datums and for origins:
    Gui::Document* gdoc = Gui::Application::Instance->getDocument(getObject()->getDocument());
    if(!gdoc) 
        return;
    
    Gui::MDIView* view = gdoc->getViewOfViewProvider(this);
    if(!view)
        return;
    
    Gui::View3DInventorViewer* viewer = static_cast<Gui::View3DInventor*>(view)->getViewer();
    SoGetBoundingBoxAction bboxAction(viewer->getSoRenderManager()->getViewportRegion());

    const auto & model = body->getFullModel ();

    // BBox for Datums is calculated from all visible objects but treating datums as their basepoints only
    SbBox3f bboxDatums = ViewProviderDatum::getRelevantBoundBox ( bboxAction, model );
    // BBox for origin should take into account datums size also
    SbBox3f bboxOrigins = bboxDatums;

    for(App::DocumentObject* obj : model) {
        if ( obj->isDerivedFrom ( Part::Datum::getClassTypeId () ) ) {
            ViewProvider *vp = Gui::Application::Instance->getViewProvider(obj);
            if (!vp) { continue; }

            ViewProviderDatum *vpDatum = static_cast <ViewProviderDatum *> (vp) ;

            vpDatum->setExtents ( bboxDatums );

            bboxAction.apply ( vp->getRoot () );
            bboxOrigins.extendBy ( bboxAction.getBoundingBox () );
        }
    }

    // get the bounding box values
    SbVec3f max = bboxOrigins.getMax();
    SbVec3f min = bboxOrigins.getMin();

    // obtain an Origin and it's ViewProvider
    App::Origin* origin = 0;
    Gui::ViewProviderOrigin* vpOrigin = 0;
    try {
        origin = body->getOrigin ();
        assert (origin);

        Gui::ViewProvider *vp = Gui::Application::Instance->getViewProvider(origin);
        if (!vp) {
            throw Base::Exception ("No view provider linked to the Origin");
        }
        assert ( vp->isDerivedFrom ( Gui::ViewProviderOrigin::getClassTypeId () ) );
        vpOrigin = static_cast <Gui::ViewProviderOrigin *> ( vp );
    } catch (const Base::Exception &ex) {
        Base::Console().Error ("%s\n", ex.what() );
        return;
    }

    // calculate the desired origin size
    Base::Vector3d size;

    for (uint_fast8_t i=0; i<3; i++) {
        size[i] = std::max ( fabs ( max[i] ), fabs ( min[i] ) );
        if (size[i] < Precision::Confusion() ) {
            size[i] = Gui::ViewProviderOrigin::defaultSize();
        }
    }

    vpOrigin->Size.setValue ( size*1.2 );
}