EDIT

/**

* Copyright (C) 2017 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.vaadin.view.registration;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.EnumSet;

import java.util.HashMap;

import java.util.HashSet;

import java.util.List;

import java.util.Map;

import java.util.Objects;

import java.util.Set;

import java.util.Stack;

import java.util.UUID;

import org.apache.log4j.Logger;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.transaction.TransactionStatus;

import org.vaadin.spring.events.EventScope;

import org.vaadin.spring.events.annotation.EventBusListenerMethod;

import com.vaadin.server.SystemError;

import com.vaadin.spring.annotation.SpringComponent;

import com.vaadin.spring.annotation.ViewScope;

import com.vaadin.ui.AbstractField;

import com.vaadin.ui.Button;

import com.vaadin.ui.Label;

import com.vaadin.ui.UI;

import com.vaadin.ui.VerticalLayout;

import com.vaadin.ui.Window;

import eu.etaxonomy.cdm.api.service.INameService;

import eu.etaxonomy.cdm.api.service.IRegistrationService;

import eu.etaxonomy.cdm.api.service.config.RegistrationStatusTransitions;

import eu.etaxonomy.cdm.api.service.dto.RegistrationDTO;

import eu.etaxonomy.cdm.api.service.dto.RegistrationWorkingSet;

import eu.etaxonomy.cdm.api.service.exception.RegistrationValidationException;

import eu.etaxonomy.cdm.api.service.name.TypeDesignationSetManager.TypeDesignationWorkingSetType;

import eu.etaxonomy.cdm.api.service.registration.IRegistrationWorkingSetService;

import eu.etaxonomy.cdm.api.utility.RoleProber;

import eu.etaxonomy.cdm.api.utility.UserHelper;

import eu.etaxonomy.cdm.ext.common.ExternalServiceException;

import eu.etaxonomy.cdm.ext.registration.messages.IRegistrationMessageService;

import eu.etaxonomy.cdm.model.common.User;

import eu.etaxonomy.cdm.model.name.NameTypeDesignation;

import eu.etaxonomy.cdm.model.name.Rank;

import eu.etaxonomy.cdm.model.name.Registration;

import eu.etaxonomy.cdm.model.name.RegistrationStatus;

import eu.etaxonomy.cdm.model.name.TaxonName;

import eu.etaxonomy.cdm.model.name.TaxonNameFactory;

import eu.etaxonomy.cdm.model.name.TypeDesignationBase;

import eu.etaxonomy.cdm.model.reference.Reference;

import eu.etaxonomy.cdm.model.reference.ReferenceType;

import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;

import eu.etaxonomy.cdm.ref.EntityReference;

import eu.etaxonomy.cdm.ref.TypedEntityReference;

import eu.etaxonomy.cdm.service.CdmFilterablePagingProvider;

import eu.etaxonomy.cdm.service.CdmStore;

import eu.etaxonomy.cdm.service.UserHelperAccess;

import eu.etaxonomy.cdm.vaadin.component.CdmBeanItemContainerFactory;

import eu.etaxonomy.cdm.vaadin.component.registration.RegistrationItem;

import eu.etaxonomy.cdm.vaadin.component.registration.RegistrationStatusFieldInstantiator;

import eu.etaxonomy.cdm.vaadin.component.registration.RegistrationStatusSelect;

import eu.etaxonomy.cdm.vaadin.event.AbstractEditorAction.EditorActionContext;

import eu.etaxonomy.cdm.vaadin.event.EditorActionTypeFilter;

import eu.etaxonomy.cdm.vaadin.event.EntityChangeEvent;

import eu.etaxonomy.cdm.vaadin.event.ReferenceEditorAction;

import eu.etaxonomy.cdm.vaadin.event.RegistrationEditorAction;

import eu.etaxonomy.cdm.vaadin.event.ShowDetailsEvent;

import eu.etaxonomy.cdm.vaadin.event.ShowDetailsEventEntityTypeFilter;

import eu.etaxonomy.cdm.vaadin.event.TaxonNameEditorAction;

import eu.etaxonomy.cdm.vaadin.event.TypeDesignationWorkingsetEditorAction;

import eu.etaxonomy.cdm.vaadin.event.registration.RegistrationWorkingsetAction;

import eu.etaxonomy.cdm.vaadin.permission.RolesAndPermissions;

import eu.etaxonomy.cdm.vaadin.theme.EditValoTheme;

import eu.etaxonomy.cdm.vaadin.ui.RegistrationUIDefaults;

import eu.etaxonomy.cdm.vaadin.ui.config.TaxonNamePopupEditorConfig;

import eu.etaxonomy.cdm.vaadin.util.CdmTitleCacheCaptionGenerator;

import eu.etaxonomy.cdm.vaadin.view.name.NameTypeDesignationEditorView;

import eu.etaxonomy.cdm.vaadin.view.name.NameTypeDesignationPopupEditor;

import eu.etaxonomy.cdm.vaadin.view.name.SpecimenTypeDesignationWorkingsetPopupEditor;

import eu.etaxonomy.cdm.vaadin.view.name.TaxonNamePopupEditor;

import eu.etaxonomy.cdm.vaadin.view.name.TypeDesignationWorkingsetEditorIdSet;

import eu.etaxonomy.cdm.vaadin.view.reference.ReferencePopupEditor;

import eu.etaxonomy.vaadin.mvp.AbstractPopupEditor;

import eu.etaxonomy.vaadin.mvp.AbstractPresenter;

import eu.etaxonomy.vaadin.mvp.AbstractView;

import eu.etaxonomy.vaadin.mvp.BeanInstantiator;

import eu.etaxonomy.vaadin.ui.navigation.NavigationEvent;

import eu.etaxonomy.vaadin.ui.view.DoneWithPopupEvent;

import eu.etaxonomy.vaadin.ui.view.DoneWithPopupEvent.Reason;

/**

 * @author a.kohlbecker

 * @since Mar 3, 2017

 *

 */

@SpringComponent

@ViewScope

public class RegistrationWorkingsetPresenter extends AbstractPresenter<RegistrationWorkingsetView> {

    private static final Logger logger = Logger.getLogger(RegistrationWorkingsetPresenter.class);

    private static final List<String> REGISTRATION_INIT_STRATEGY = Arrays.asList(

            "$",

            "blockedBy",

            "name.combinationAuthorship",

            "name.exCombinationAuthorship",

            "name.basionymAuthorship",

            "name.exBasionymAuthorship"

            );

    private static final long serialVersionUID = 1L;

    @Autowired

    private IRegistrationWorkingSetService regWorkingSetService;

    @Autowired

    private IRegistrationMessageService messageService;

    /**

     * @return the regWorkingSetService

     */

    public IRegistrationWorkingSetService getWorkingSetService() {

        return regWorkingSetService;

    }

    private RegistrationWorkingSet workingset;

    private TaxonName newTaxonNameForRegistration = null;

    private Map<NameTypeDesignationPopupEditor, UUID> nameTypeDesignationPopupEditorRegistrationUUIDMap = new HashMap<>();

    /**

     *

     */

    public RegistrationWorkingsetPresenter() {

    }

    /**

     * Always create a new Store

     *

     * @return

     */

    protected CdmStore<Registration, IRegistrationService> getRegistrationStore(){

        return new CdmStore<Registration, IRegistrationService>(getRepo(), getRepo().getRegistrationService());

    }

    /**

     * Always create a new Store

     *

     * @return

     */

    protected CdmStore<TaxonName, INameService> getTaxonNameStore(){

        return new  CdmStore<TaxonName, INameService>(getRepo(), getRepo().getNameService());

    }

    /**

     * Checks

     * <ol>

     * <li>if there is NOT any registration for this name created in the current registration system</li>

     * <li>Checks if the name belongs to the current workingset</li>

     * </ol>

     * If both checks are successful the method returns <code>true</code>.

     */

    public boolean canCreateNameRegistrationFor(TaxonName name) {

        return !getRepo().getRegistrationService().checkRegistrationExistsFor(name) && checkWokingsetContainsProtologe(name);

    }

    /**

     * @param name

     * @return

     */

    public boolean checkWokingsetContainsProtologe(TaxonName name) {

        Reference nomRef = name.getNomenclaturalReference();

        UUID citationUuid = workingset.getCitationUuid();

        // @formatter:off

        return nomRef != null && (

                // nomref matches

                nomRef.getUuid().equals(citationUuid) ||

                // nomref.inreference matches

                (nomRef.getType() != null && nomRef.getType() == ReferenceType.Section && nomRef.getInReference() != null && nomRef.getInReference().getUuid().equals(citationUuid))

                );

        // @formatter:on

    }

    /**

     * @param doReload TODO

     *

     */

    protected void refreshView(boolean doReload) {

        if(workingset == null){

            return; // nothing to do

        }

        if(doReload){

            loadWorkingSet(workingset.getCitationUuid());

        }

        applyWorkingset();

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void handleViewEntered() {

        super.handleViewEntered();

        // TODO currently cannot specify type more precisely, see AbstractSelect

        // FIXME externalize into class file!!!!!!!!!!!!

        getView().setStatusComponentInstantiator(new RegistrationStatusFieldInstantiator<Object>(){

            private static final long serialVersionUID = 7099181280977511048L;

            @Override

            public AbstractField<Object> create(RegistrationDTO regDto) {

                CdmBeanItemContainerFactory selectFieldFactory = new CdmBeanItemContainerFactory(getRepo());

                // submitters have GrantedAuthorities like REGISTRATION(PREPARATION).[UPDATE]{ab4459eb-3b96-40ba-bfaa-36915107d59e}

                UserHelper userHelper = UserHelperAccess.userHelper();

                Set<RegistrationStatus> availableStatus = new HashSet<>();

                boolean canChangeStatus = userHelper.userHasPermission(regDto.registration(), CRUD.UPDATE);

                availableStatus.add(regDto.getStatus());

                if(canChangeStatus){

                    if(userHelper.userIsAdmin()){

                        availableStatus.addAll(Arrays.asList(RegistrationStatus.values()));

                    } else {

                        availableStatus.addAll(RegistrationStatusTransitions.possibleTransitions(regDto.getStatus()));

                    }

                }

                RegistrationStatusSelect select = new RegistrationStatusSelect(null, selectFieldFactory.buildBeanItemContainer(

                        RegistrationStatus.class,

                        availableStatus.toArray(new RegistrationStatus[availableStatus.size()]))

                        );

                select.addValueChangeListener(e -> saveRegistrationStatusChange(regDto.getUuid(), e.getProperty().getValue()));

                select.setEnabled(canChangeStatus);

                select.setNullSelectionAllowed(false);

                return select;

            }

        });

        loadWorkingSet(getView().getCitationUuid());

        applyWorkingset();

    }

    private void applyWorkingset(){

         getView().setWorkingset(workingset);

        // PagingProviders and CacheGenerator for the existingNameCombobox

        activateComboboxes();

        // update the messages

        updateMessages();

    }

    /**

     *

     */

    protected void activateComboboxes() {

        CdmFilterablePagingProvider<TaxonName, TaxonName> pagingProvider = new CdmFilterablePagingProvider<TaxonName, TaxonName>(

                getRepo().getNameService());

        pagingProvider.setInitStrategy(Arrays.asList("registrations", "nomenclaturalReference", "nomenclaturalReference.inReference"));

        CdmTitleCacheCaptionGenerator<TaxonName> titleCacheGenerator = new CdmTitleCacheCaptionGenerator<TaxonName>();

        getView().getAddExistingNameCombobox().setCaptionGenerator(titleCacheGenerator);

        getView().getAddExistingNameCombobox().loadFrom(pagingProvider, pagingProvider, pagingProvider.getPageSize());

    }

    /**

     *

     */

    protected void updateMessages() {

        User user = UserHelperAccess.userHelper().user();

        for (UUID registrationUuid : getView().getRegistrationItemMap().keySet()) {

            Button messageButton = getView().getRegistrationItemMap().get(registrationUuid).regItemButtons.getMessagesButton();

            RegistrationDTO regDto = workingset.getRegistrationDTO(registrationUuid).get();

            try {

                int messageCount = messageService.countActiveMessagesFor(regDto.registration(), user);

                boolean activeMessages = messageCount > 0;

                boolean currentUserIsSubmitter = regDto.getSubmitterUserName() != null && regDto.getSubmitterUserName().equals(UserHelperAccess.userHelper().userName());

                boolean currentUserIsCurator = UserHelperAccess.userHelper().userIs(new RoleProber(RolesAndPermissions.ROLE_CURATION));

                messageButton.setEnabled(false);

                if(currentUserIsCurator){

                    if(currentUserIsSubmitter){

                        messageButton.setDescription("No point sending messages to your self.");

                    } else {

                        messageButton.setEnabled(true);

                        messageButton.setDescription("Open the messages dialog.");

                    }

                } else {

                    messageButton.setDescription("Sorry, only a curator can start a conversation.");

                }

                if(activeMessages){

                    messageButton.setEnabled(true);

                    messageButton.addStyleName(EditValoTheme.BUTTON_HIGHLITE);

                    String who = currentUserIsSubmitter ? "curator" : "submitter";

                    messageButton.setDescription("The " + who + " is looking forward to your reply.");

                }

            } catch (ExternalServiceException e) {

                messageButton.setComponentError(new SystemError(e.getMessage(), e));

            }

        }

    }

    /**

     * @param referenceID

     */

    protected void loadWorkingSet(UUID referenceUuid) {

        try {

            workingset = getWorkingSetService().loadWorkingSetByReferenceUuid(referenceUuid, true);

        } catch (RegistrationValidationException error) {

            logger.error(error);

            Window errorDialog = new Window("Validation Error");

            errorDialog.setModal(true);

            VerticalLayout subContent = new VerticalLayout();

            subContent.setMargin(true);

            errorDialog.setContent(subContent);

            subContent.addComponent(new Label(error.getMessage()));

            UI.getCurrent().addWindow(errorDialog);

        }

        if(workingset == null || workingset.getCitationUuid() == null){

            Reference citation = getRepo().getReferenceService().find(referenceUuid);

            workingset = new RegistrationWorkingSet(citation);

        }

    }

    private void saveRegistrationStatusChange(UUID uuid, Object value) {

        Registration reg = getRepo().getRegistrationService().load(uuid);

        if(reg == null){

            // registration was not yet persisted, ignore

            return;

        }

        if(value != null && value instanceof RegistrationStatus){

            if(!Objects.equals(value, reg.getStatus())){

                reg.setStatus((RegistrationStatus)value);

                getRegistrationStore().saveBean(reg, (AbstractView)getView());

                refreshView(true);

            }

        } else {

            // only log here as error

            logger.error("Ivalid attempt to set RegistrationStatus to " + Objects.toString(value.toString(), "NULL"));

        }

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Add.class)

    public void onReferenceEditorActionAdd(ReferenceEditorAction event) {

        if(!checkFromOwnView(event)){

            return;

        }

        ReferencePopupEditor popup = openPopupEditor(ReferencePopupEditor.class, event);

        popup.withReferenceTypes(RegistrationUIDefaults.PRINTPUB_REFERENCE_TYPES);

        popup.loadInEditor(null);

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Edit.class)

    public void onReferenceEditorActionEdit(ReferenceEditorAction event) {

        if(!checkFromOwnView(event)){

            return;

        }

        ReferencePopupEditor popup = openPopupEditor(ReferencePopupEditor.class, event);

        popup.withReferenceTypes(RegistrationUIDefaults.PRINTPUB_REFERENCE_TYPES);

        popup.withDeleteButton(true);

        popup.loadInEditor(event.getEntityUuid());

    }

    @EventBusListenerMethod

    public void onDoneWithReferencePopupEditor(DoneWithPopupEvent event) throws RegistrationValidationException{

        if(event.getPopup() instanceof ReferencePopupEditor){

            if(event.getReason().equals(Reason.SAVE)){

                refreshView(true);

            }

        }

    }

    @EventBusListenerMethod

    public void onDoneWithSpecimenTypeDesignationWorkingsetPopupEditor(DoneWithPopupEvent event) throws RegistrationValidationException{

        if(event.getPopup() instanceof SpecimenTypeDesignationWorkingsetPopupEditor){

            if(event.getReason().equals(Reason.SAVE)){

                refreshView(true);

            }

        }

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Edit.class)

    public void onRegistrationEditorAction(RegistrationEditorAction event) {

        if(!checkFromOwnView(event)){

            return;

        }

        RegistrationPopupEditor popup = openPopupEditor(RegistrationPopupEditor.class, event);

        popup.loadInEditor(event.getEntityUuid());

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Edit.class)

    public void onTaxonNameEditorActionEdit(TaxonNameEditorAction event) {

        if(!checkFromOwnView(event)){

            return;

        }

        TaxonNamePopupEditor popup = openPopupEditor(TaxonNamePopupEditor.class, event);

        popup.setParentEditorActionContext(event.getContext());

        popup.withDeleteButton(true);

        TaxonNamePopupEditorConfig.configureForNomenclaturalAct(popup);

        popup.loadInEditor(event.getEntityUuid());

        if(event.hasSource() && event.getSource().isReadOnly()){

            // avoid resetting readonly to false

            popup.setReadOnly(true);

        }

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Add.class)

    public void onTaxonNameEditorActionAdd(TaxonNameEditorAction event) {

        if(!checkFromOwnView(event)){

            return;

        }

        getView().getAddNewNameRegistrationButton().setEnabled(false);

        newTaxonNameForRegistration = TaxonNameFactory.NewNameInstance(RegistrationUIDefaults.NOMENCLATURAL_CODE, Rank.SPECIES());

        newTaxonNameForRegistration.setNomenclaturalReference(getRepo().getReferenceService().find(workingset.getCitationUuid()));

        EntityChangeEvent nameSaveEvent = getTaxonNameStore().saveBean(newTaxonNameForRegistration, (AbstractView) getView());

        newTaxonNameForRegistration = getRepo().getNameService().find(nameSaveEvent.getEntityUuid());

        TaxonNamePopupEditor popup = openPopupEditor(TaxonNamePopupEditor.class, event);

        popup.setParentEditorActionContext(event.getContext());

        popup.grantToCurrentUser(EnumSet.of(CRUD.UPDATE,CRUD.DELETE));

        popup.withDeleteButton(true);

        TaxonNamePopupEditorConfig.configureForNomenclaturalAct(popup);

        popup.loadInEditor(newTaxonNameForRegistration.getUuid());

    }

    /**

     * Creates a new <code>Registration</code> for a new name that has just been edited

     * using the <code>TaxonNamePopupEditor</code>. The new name was previously created

     * in this presenter as <code>newTaxonNameForRegistration</code> (see {@link #onTaxonNameEditorActionAdd(TaxonNameEditorAction)})

     * and is either filled with data (<code>Reason.SAVE</code>) or it is still empty

     * (<code>Reason.CANCEL</code>).

     *

     *

     * @param event

     * @throws RegistrationValidationException

     */

    @EventBusListenerMethod

    public void onDoneWithTaxonnameEditor(DoneWithPopupEvent event) throws RegistrationValidationException{

        if(event.getPopup() instanceof TaxonNamePopupEditor){

            try {

                TransactionStatus txStatus = getRepo().startTransaction();

                if(event.getReason().equals(Reason.SAVE)){

                    if(newTaxonNameForRegistration != null){

                        UUID taxonNameUuid = newTaxonNameForRegistration.getUuid();

                        getRepo().getSession().refresh(newTaxonNameForRegistration);

                        Registration reg = getRepo().getRegistrationService().createRegistrationForName(taxonNameUuid);

                        // reload workingset into current session

                        loadWorkingSet(workingset.getCitationUuid());

                        workingset.add(reg);

                    }

                    refreshView(true);

                } else if(event.getReason().equals(Reason.CANCEL)){

                    if(newTaxonNameForRegistration != null){

                        // clean up

                        getTaxonNameStore().deleteBean(newTaxonNameForRegistration, (AbstractView) getView());

                    }

                }

                getRepo().commitTransaction(txStatus);

            } finally {

                getRepo().getSession().clear(); // #7702

            }

            newTaxonNameForRegistration = null;

            getView().getAddNewNameRegistrationButton().setEnabled(true);

        }

    }

    /**

     * Creates a new Registration for an exiting (previously published) name.

     *

     * @param event

     * @throws RegistrationValidationException

     */

    @EventBusListenerMethod

    public void onRegistrationWorkflowEventActionStart(RegistrationWorkingsetAction event) throws RegistrationValidationException {

        if(!event.isStart()){

            return;

        }

        getView().getAddExistingNameCombobox().commit(); // update the chosen value in the datasource

        TaxonName typifiedName = getView().getAddExistingNameCombobox().getValue();

        if(typifiedName != null){

            boolean doReloadWorkingSet = false;

            Reference citation = getRepo().getReferenceService().find(workingset.getCitationUuid());

            // here we completely ignore the ExistingNameRegistrationType since the user should not have the choice

            // to create a typification only registration in the working (publication) set which contains

            // the protologe. This is known from the nomenclatural reference.

            if(canCreateNameRegistrationFor(typifiedName)){

                // the citation which is the base for workingset contains the protologe of the name and the name has not

                // been registered before:

                // create a registration for the name and the first typifications

                Registration newRegistrationWithExistingName = getRepo().getRegistrationService().createRegistrationForName(typifiedName.getUuid());

                workingset.add(new RegistrationDTO(newRegistrationWithExistingName, typifiedName, citation));

                doReloadWorkingSet = true;

            } else {

                if(!checkWokingsetContainsProtologe(typifiedName)){

                    // create a typification only registration

                    Registration typificationOnlyRegistration = getRepo().getRegistrationService().newRegistration();

                    if(!getRepo().getRegistrationService().checkRegistrationExistsFor(typifiedName)){

                        // oops, yet no registration for this name, so we create it as blocking registration:

                        Registration blockingNameRegistration = getRepo().getRegistrationService().createRegistrationForName(typifiedName.getUuid());

                        typificationOnlyRegistration.getBlockedBy().add(blockingNameRegistration);

                    }

                    RegistrationDTO regDTO = new RegistrationDTO(typificationOnlyRegistration, typifiedName, citation);

                    workingset.add(regDTO);

                }

            }

            // tell the view to update the workingset

            refreshView(doReloadWorkingSet);

            getView().getAddExistingNameRegistrationButton().setEnabled(false);

        } else {

            logger.error("Seletced name is NULL");

        }

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Edit.class)

    public void onTypeDesignationsEditorActionEdit(TypeDesignationWorkingsetEditorAction event) {

        if(!checkFromOwnView(event)){

            return;

        }

        if(event.getWorkingSetType() == TypeDesignationWorkingSetType.SPECIMEN_TYPE_DESIGNATION_WORKINGSET ){

            SpecimenTypeDesignationWorkingsetPopupEditor popup = openPopupEditor(SpecimenTypeDesignationWorkingsetPopupEditor.class, event);

            popup.setParentEditorActionContext(event.getContext());

            popup.withDeleteButton(true);

            popup.loadInEditor(new TypeDesignationWorkingsetEditorIdSet(event.getRegistrationUuid(), event.getBaseEntityRef()));

            if(event.hasSource()){

                // propagate readonly state from source button to popup

                popup.setReadOnly(event.getSource().isReadOnly());

            }

        } else {

            NameTypeDesignationPopupEditor popup = openPopupEditor(NameTypeDesignationPopupEditor.class, event);

            popup.setParentEditorActionContext(event.getContext());

            popup.withDeleteButton(true);

            popup.loadInEditor(new TypeDesignationWorkingsetEditorIdSet(event.getRegistrationUuid(), event.getBaseEntityRef()));

            popup.getCitationCombobox().setEnabled(false);

            popup.getTypifiedNamesComboboxSelect().setEnabled(false);

            if(event.hasSource()){

                // propagate readonly state from source button to popup

                popup.setReadOnly(event.getSource().isReadOnly());

            }

            nameTypeDesignationPopupEditorRegistrationUUIDMap.put(popup, event.getRegistrationUuid());

        }

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Add.class)

    public void onTypeDesignationWorkingsetAdd(TypeDesignationWorkingsetEditorAction event) {

        if(!event.hasSource()){

            return;

        }

        if(event.getWorkingSetType() == TypeDesignationWorkingSetType.SPECIMEN_TYPE_DESIGNATION_WORKINGSET){

            SpecimenTypeDesignationWorkingsetPopupEditor popup = openPopupEditor(SpecimenTypeDesignationWorkingsetPopupEditor.class, event);

            popup.setParentEditorActionContext(event.getContext());

            TypeDesignationWorkingsetEditorIdSet identifierSet;

            UUID typifiedNameUuid;

            RegistrationDTO registrationDTO = workingset.getRegistrationDTO(event.getRegistrationUuid()).get();

            EntityReference typifiedNameRef = registrationDTO.getTypifiedNameRef();

            if(typifiedNameRef != null){

                // case for registrations without name, in which case the typifiedName is only defined via the typedesignations

                typifiedNameUuid = typifiedNameRef.getUuid();

            } else {

                // case of registrations with a name in the nomenclatural act.

                typifiedNameUuid = registrationDTO.getNameRef().getUuid();

            }

            identifierSet = new TypeDesignationWorkingsetEditorIdSet(

                    event.getRegistrationUuid(),

                    getView().getCitationUuid(),

                    typifiedNameUuid

                    );

            popup.grantToCurrentUser(EnumSet.of(CRUD.UPDATE, CRUD.DELETE));

            popup.loadInEditor(identifierSet);

            popup.withDeleteButton(true);

            if(event.hasSource()){

                // propagate readonly state from source component to popup

                popup.setReadOnly(event.getSource().isReadOnly());

            }

        } else {

            NameTypeDesignationPopupEditor popup = openPopupEditor(NameTypeDesignationPopupEditor.class, event);

            popup.setParentEditorActionContext(event.getContext());

            popup.withDeleteButton(true);

            popup.grantToCurrentUser(EnumSet.of(CRUD.UPDATE, CRUD.DELETE));

            RegistrationDTO regDto = workingset.getRegistrationDTO(event.getRegistrationUuid()).get();

            Reference citation = regDto.getCitation();

            nameTypeDesignationPopupEditorRegistrationUUIDMap.put(popup, event.getRegistrationUuid());

            popup.setBeanInstantiator(new BeanInstantiator<NameTypeDesignation>() {

                @Override

                public NameTypeDesignation createNewBean() {

                    TaxonName typifiedName = getRepo().getNameService().load(event.getTypifiedNameUuid(), Arrays.asList(new String[]{"typeDesignations", "homotypicalGroup"}));

                    NameTypeDesignation nameTypeDesignation  = NameTypeDesignation.NewInstance();

                    nameTypeDesignation.setCitation(citation);

                    nameTypeDesignation.getTypifiedNames().add(typifiedName);

                    return nameTypeDesignation;

                }

            });

            popup.loadInEditor(null);

            popup.getCitationCombobox().setEnabled(false);

            popup.getTypifiedNamesComboboxSelect().setEnabled(false);

            if(event.hasSource()){

                // propagate readonly state from source component to popup

                popup.setReadOnly(event.getSource().isReadOnly());

            }

        }

    }

    /**

     * Performs final actions after a TypeDesignationEditor which has been

     * opened to add a TypeDesignation to a Registration object which was

     * created for an previously published name. Prior adding a typedesignation,

     * the according Registration object is dangling, that has no association to

     * any entity denoting an nomenclatural act which has a reference to a

     * publication. This means that the registration object is not in the

     * working set.

     *

     *

     * @param event

     * @throws RegistrationValidationException

     */

    @EventBusListenerMethod

    public void onDoneWithTypeDesignationEditor(DoneWithPopupEvent event) throws RegistrationValidationException{

        if(event.getPopup() instanceof SpecimenTypeDesignationWorkingsetPopupEditor){

            if(event.getReason().equals(Reason.SAVE)){

                // NOTE: adding the SpecimenTypeDesignations to the registration is done in the

                // SpecimenTypeDesignationWorkingSetServiceImpl.save(SpecimenTypeDesignationWorkingSetDTO dto) method

                refreshView(true);

            } else if(event.getReason().equals(Reason.CANCEL)){

                // noting to do

            }

        } else if(event.getPopup() instanceof NameTypeDesignationPopupEditor){

            if(event.getReason().equals(Reason.SAVE)){

                UUID typeDesignationUuid = ((NameTypeDesignationPopupEditor)event.getPopup()).getBean().getUuid();

                getRepo().getSession().clear();

                UUID regUUID = nameTypeDesignationPopupEditorRegistrationUUIDMap.get(event.getPopup());

                getRepo().getRegistrationService().addTypeDesignation(regUUID, typeDesignationUuid);

                getRepo().getSession().clear();

                nameTypeDesignationPopupEditorRegistrationUUIDMap.remove(event.getPopup());

                refreshView(true);

            } else if(event.getReason().equals(Reason.CANCEL)){

                // noting to do

            }

        }

        // ignore other editors

    }

    @EventBusListenerMethod(filter = ShowDetailsEventEntityTypeFilter.RegistrationWorkingSet.class)

    public void onShowDetailsEventForRegistrationWorkingSet(ShowDetailsEvent<RegistrationWorkingSet,?> event) {

        if(event.getProperty().equals(RegistrationItem.VALIDATION_PROBLEMS)){

            List<String> messages = new ArrayList<>();

            for(RegistrationDTO dto : workingset.getRegistrationDTOs()){

                dto.getValidationProblems().forEach(m -> messages.add(dto.getSummary() + ": " + m));

            }

            getView().openDetailsPopup("Validation Problems", messages);

        }

    }

    @EventBusListenerMethod

    public void onEntityChangeEvent(EntityChangeEvent event){

        if(workingset == null){

            return;

        }

        if(Reference.class.isAssignableFrom(event.getEntityType())){

            if(workingset.getCitationUuid().equals(event.getEntityUuid())){

                if(event.isRemovedType()){

                    viewEventBus.publish(EventScope.UI, this, new NavigationEvent(StartRegistrationViewBean.NAME));

                } else {

                    refreshView(true);

                }

            }

        } else

        if(Registration.class.isAssignableFrom(event.getEntityType())){

            if(workingset.getRegistrations().stream().anyMatch(reg -> reg.getUuid() == event.getEntityUuid())){

                refreshView(true);

            }

        } else

        if(TaxonName.class.isAssignableFrom(event.getEntityType())){

            if(event.getType().equals(EntityChangeEvent.Type.CREATED)){

                // new name! create a blocking registration

                Stack<EditorActionContext>context = ((AbstractPopupEditor)event.getSourceView()).getEditorActionContext();

                EditorActionContext rootContext = context.get(0);

                if(rootContext.getParentView().equals(getView())){

                    Registration blockingRegistration = getRepo().getRegistrationService().createRegistrationForName(event.getEntityUuid());

                    TypedEntityReference<Registration> regReference = (TypedEntityReference<Registration>)rootContext.getParentEntity();

                    Registration registration = null;

                    for(int i = context.size()-1; i>0; i--){

                        if(NameTypeDesignationEditorView.class.isAssignableFrom(context.elementAt(i).getParentView().getClass())){

                            UUID registrationUUID = nameTypeDesignationPopupEditorRegistrationUUIDMap.get(context.elementAt(i).getParentView());

                            RegistrationDTO registrationDTO = workingset.getRegistrationDTO(registrationUUID).get();

                            registration = registrationDTO.registration();

                        }

                    }

                    if(registration == null){

                        throw new NullPointerException("Registration not found for the NameTypeDesignation");

                    }

                    registration.getBlockedBy().add(blockingRegistration);

                    getRepo().getRegistrationService().saveOrUpdate(registration);

                    logger.debug("Blocking registration created");

                } else {

                    logger.debug("Non blocking registration, since a new name for a new registration has been created");

                }

            }

            if(workingset.getRegistrationDTOs().stream().anyMatch(reg ->

                reg.getTypifiedNameRef() != null

                && reg.getTypifiedNameRef().getUuid().equals(event.getEntityUuid()))){

                    refreshView(true);

            }

        } else

        if(TypeDesignationBase.class.isAssignableFrom(event.getEntityType())){

            if(workingset.getRegistrationDTOs().stream().anyMatch(

                    reg -> reg.typeDesignations() != null && reg.typeDesignations().stream().anyMatch(

                            td -> td.getUuid() == event.getEntityUuid()

                            )

                        )

                    ){

                refreshView(true);

            }

        }

    }

    @EventBusListenerMethod(filter = ShowDetailsEventEntityTypeFilter.RegistrationDTO.class)

    public void onShowDetailsEventForRegistrationDTO(ShowDetailsEvent<RegistrationDTO, UUID> event) {

        // FIXME check from own view!!!

        if(getView() == null){

            return;

        }

        UUID registrationUuid = event.getIdentifier();

        RegistrationDTO regDto = getWorkingSetService().loadDtoByUuid(registrationUuid);

        if(event.getProperty().equals(RegistrationItem.BLOCKED_BY)){

            Set<RegistrationDTO> blockingRegs = getWorkingSetService().loadBlockingRegistrations(registrationUuid);

            getView().setBlockingRegistrations(registrationUuid, blockingRegs);

        } else if(event.getProperty().equals(RegistrationItem.MESSAGES)){

            RegistrationMessagesPopup popup = openPopupEditor(RegistrationMessagesPopup.class, null);

            popup.loadMessagesFor(regDto.getUuid());

        } else if(event.getProperty().equals(RegistrationItem.VALIDATION_PROBLEMS)){

            getView().openDetailsPopup("Validation Problems", regDto.getValidationProblems());

        }

    }

}