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.Collection;

import java.util.List;

import java.util.UUID;

import org.springframework.security.core.GrantedAuthority;

import com.vaadin.data.Item;

import com.vaadin.data.util.BeanContainer;

import com.vaadin.data.util.GeneratedPropertyContainer;

import com.vaadin.data.util.PropertyValueGenerator;

import com.vaadin.navigator.View;

import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;

import com.vaadin.server.Page;

import com.vaadin.spring.annotation.SpringView;

import com.vaadin.ui.AbstractSelect;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Component;

import com.vaadin.ui.CssLayout;

import com.vaadin.ui.HorizontalLayout;

import com.vaadin.ui.Label;

import com.vaadin.ui.ListSelect;

import com.vaadin.ui.Notification;

import com.vaadin.ui.TextField;

import com.vaadin.ui.VerticalLayout;

import com.vaadin.ui.themes.ValoTheme;

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

import eu.etaxonomy.cdm.api.service.pager.Pager;

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

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

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

import eu.etaxonomy.cdm.service.UserHelperAccess;

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

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

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

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

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

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

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

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

import eu.etaxonomy.cdm.vaadin.view.AbstractPageView;

/**

 * @author a.kohlbecker

 * @since Mar 2, 2017

 *

 */

@SpringView(name=ListViewBean.NAME)

public class ListViewBean extends AbstractPageView<ListPresenter> implements ListView, View, AccessRestrictedView {

    private static final long serialVersionUID = 3543300933072824713L;

    public static final String NAME = "list";

    Mode viewMode = Mode.all;

    private CssLayout listContainer;

    private HorizontalLayout toolBar;

    private PagerComponent pagerTop;

    private Label filterInstructionLabel = new Label("Filter the registrations by");

    private ListSelect registrationStatusFilter = null;

    private ListSelect submitterFilter = null; // must be null, the presenter relies on this

    private TextField identifierFilter = new TextFieldNFix("Identifier");

    private TextField taxonNameFilter = new TextFieldNFix("Name");

    private TextField referenceFilter = new TextFieldNFix("Publication");

    private AbstractSelect statusTypeFilter;

    public ListViewBean() {

        super();

    }

    @Override

    protected void initContent() {

        getLayout().setId(NAME);

        toolBar = new HorizontalLayout();

        toolBar.addComponent(filterInstructionLabel);

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

        boolean userIsAdmin = UserHelperAccess.userHelper().userIsAdmin();

        if(userIsCurator || userIsAdmin){

            submitterFilter = new ListSelect("Submitter");

            submitterFilter.setRows(1);

            submitterFilter.addValueChangeListener(e -> updateResults(null, null));

            toolBar.addComponent(submitterFilter);

        }

        if(viewMode.equals(Mode.all)){

            registrationStatusFilter = new ListSelect("Registration status", Arrays.asList(RegistrationStatus.values()));

            registrationStatusFilter.setNullSelectionAllowed(true);

            registrationStatusFilter.setRows(1);

            registrationStatusFilter.addValueChangeListener(e -> updateResults(null, null));

            toolBar.addComponent(registrationStatusFilter);

        }

        statusTypeFilter = new ListSelect("Type Status");

        ((ListSelect)statusTypeFilter).setRows(3);

        statusTypeFilter.setMultiSelect(true);

        statusTypeFilter.setNullSelectionAllowed(true);

        statusTypeFilter.addValueChangeListener(e -> updateResults(null, null));

        statusTypeFilter.setDescription("Strg + Click to unselect");

        toolBar.addComponents(identifierFilter, taxonNameFilter, statusTypeFilter);

        int textChangeTimeOut = 200;

        identifierFilter.addTextChangeListener(e -> updateResults(identifierFilter, e.getText()));

        identifierFilter.setTextChangeTimeout(textChangeTimeOut);

        taxonNameFilter.addTextChangeListener(e -> updateResults(taxonNameFilter, e.getText()));

        identifierFilter.setTextChangeTimeout(textChangeTimeOut);

        toolBar.setSpacing(true);

        toolBar.iterator().forEachRemaining( c -> c.addStyleName(ValoTheme.LABEL_TINY));

        addContentComponent(toolBar, null);

        pagerTop =  new PagerComponent(new PagerComponent.PagerClickListener() {

            @Override

            public void pageIndexClicked(Integer index) {

                getViewEventBus().publish(ListViewBean.this, new PagingEvent(ListViewBean.this, index));

            }

        });

        addContentComponent(pagerTop, null);

        ((VerticalLayout)getLayout()).setComponentAlignment(pagerTop, Alignment.MIDDLE_CENTER);

        listContainer = new CssLayout();

        listContainer.setId("registration-list");

        listContainer.setWidth(100, Unit.PERCENTAGE);

        addContentComponent(listContainer, 1f);

    }

    /**

     * @return

     */

    private void updateResults(TextField field, String newText) {

        getViewEventBus().publish(this, new UpdateResultsEvent(field, newText, this));

    }

    @Override

    protected String getHeaderText() {

        return "Registrations";

    }

    @Override

    protected String getSubHeaderText() {

        return "This is the list of all your registrations in progress.";

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void enter(ViewChangeEvent event) {

        getPresenter().onViewEnter();

    }

    @Override

    public void populate(Pager<RegistrationDTO> regDtoPager) {

        ArrayList<RegistrationDTO> regDtos = new ArrayList<RegistrationDTO>(regDtoPager.getRecords());

        pagerTop.updatePager(regDtoPager);

        populateList(regDtos);

    }

    public void populateList(Collection<RegistrationDTO> registrations) {

        listContainer.removeAllComponents();

        boolean isCurator = UserHelperAccess.userHelper().userIs(new RoleProber(RolesAndPermissions.ROLE_CURATION)) || UserHelperAccess.userHelper().userIsAdmin();

        for(RegistrationDTO regDto : registrations) {

            RegistrationItem item = new RegistrationItem(regDto, this);

            item.getSubmitterLabel().setVisible(isCurator);

            item.setWidth(100, Unit.PERCENTAGE);

            item.getBlockedByButton().addClickListener(e -> getViewEventBus().publish(

                    this,

                    new ShowDetailsEvent<Registration, UUID>(

                            e, Registration.class, regDto.getUuid(), "blockedBy"

                            )

                    ));

            listContainer.addComponent(item);

        }

    }

    @Override

    public void openDetailsPopup(String caption, List<String> messages){

        StringBuffer sb = new StringBuffer();

        sb.append("<div class=\"details-popup-content\">");

        messages.forEach(s -> sb.append(s).append("</br>"));

        sb.append("</div>");

        new Notification(caption, sb.toString(), Notification.Type.HUMANIZED_MESSAGE, true).show(Page.getCurrent());

    }

    /**

     * @param registrationItems

     * @return

     */

    @Deprecated

    private GeneratedPropertyContainer buildGeneratedProperties(

            BeanContainer<String, RegistrationDTO> registrationItems) {

        GeneratedPropertyContainer gpContainer = new GeneratedPropertyContainer(registrationItems);

        gpContainer.addGeneratedProperty("operation", new PropertyValueGenerator<String>() {

            @Override

            public String getValue(Item item, Object itemId, Object propertyId) {

                return "Open";

            }

            @Override

            public Class<String> getType() {

                return String.class;

            }

          });

        return gpContainer;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public boolean allowAnonymousAccess() {

        return false;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public Collection<Collection<GrantedAuthority>> allowedGrantedAuthorities() {

        return null;

    }

    /**

     * @return the identifierFilter

     */

    @Override

    public TextField getIdentifierFilter() {

        return identifierFilter;

    }

    /**

     * @return the taxonNameFilter

     */

    @Override

    public TextField getTaxonNameFilter() {

        return taxonNameFilter;

    }

    /**

     * @return the referenceFilter

     */

    @Override

    public TextField getReferenceFilter() {

        return referenceFilter;

    }

    /**

     * @return the registrationStatusFilter

     */

    @Override

    public ListSelect getRegistrationStatusFilter() {

        return registrationStatusFilter;

    }

    /**

     * @return the submitterFilter

     */

    @Override

    public ListSelect getSubmitterFilter() {

        return submitterFilter;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void setViewMode(Mode mode) {

        viewMode = mode;

    }

    @Override

    public Mode getViewMode() {

        return viewMode;

    }

    @Override

    public RegistrationItem getRegistrationItem(UUID registrationUuid){

        for(Component c : listContainer){

            RegistrationItem item = (RegistrationItem)c;

            if(registrationUuid.equals(item.getRegistrationUuid())){

                return item;

            }

        }

        return null;

    }

    /**

     * @return the statusTypeFilter for the TypeDesignation.statusType

     */

    @Override

    public AbstractSelect getStatusTypeFilter() {

        return statusTypeFilter;

    }

}