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.Collection;

import java.util.UUID;

import org.springframework.security.core.GrantedAuthority;

import org.vaadin.viritin.fields.LazyComboBox;

import com.vaadin.navigator.View;

import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;

import com.vaadin.spring.annotation.SpringView;

import com.vaadin.ui.AbstractSelect;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Button;

import com.vaadin.ui.ComboBox;

import com.vaadin.ui.CssLayout;

import com.vaadin.ui.HorizontalLayout;

import com.vaadin.ui.Label;

import com.vaadin.ui.OptionGroup;

import com.vaadin.ui.VerticalLayout;

import com.vaadin.ui.themes.ValoTheme;

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

import eu.etaxonomy.cdm.persistence.query.MatchMode;

import eu.etaxonomy.cdm.ref.TypedEntityReference;

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

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

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

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

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

import eu.etaxonomy.vaadin.event.EditorActionType;

/**

 * @author a.kohlbecker

 * @since Mar 2, 2017

 *

 */

@SpringView(name=StartRegistrationViewBean.NAME)

public class StartRegistrationViewBean extends AbstractPageView<StartRegistrationPresenter>

    implements StartRegistrationView, AccessRestrictedView, View {

    private static final long serialVersionUID = -9055865292188732909L;

    public static final String NAME = "regStart";

    public static final String SUBHEADER_DEEFAULT = "Any valid nomenclatural act can only be etablished in a publication. "

            + "To start a new registration process, please choose an existing one or create a new publication.";

    private LazyComboBox<TypedEntityReference<Reference>> referenceCombobox;

    private OptionGroup searchModeOptions = new OptionGroup("Search mode");

    private Button newPublicationButton;

    private Button removeNewPublicationButton;

    private Label newPublicationLabel;

    private Button continueButton;

    private static final String ELEMENT_WIDTH = "330px";

    public StartRegistrationViewBean() {

        super();

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void initContent() {

        getLayout().setId(NAME);

        VerticalLayout vlayout = new VerticalLayout();

        vlayout.setSpacing(true);

        vlayout.setMargin(true);

        HorizontalLayout publicationLayout = new HorizontalLayout();

        publicationLayout.setSpacing(true);

        Class<TypedEntityReference<Reference>> type = (Class<TypedEntityReference<Reference>>) new TypedEntityReference<Reference>(Reference.class, null).getClass();

        referenceCombobox = new LazyComboBox<TypedEntityReference<Reference>>(type) {

            @Override

            protected void setSelectInstance(AbstractSelect select) {

                if(select instanceof ComboBox){

                    ComboBox combobox = (ComboBox)select;

                    // uncomment the below line to set a defined width for the ComboBox popup

                    // combobox.setPopupWidth("200%");

                }

                super.setSelectInstance(select);

            }

        };

        referenceCombobox.setWidth(ELEMENT_WIDTH);

        referenceCombobox.setBuffered(false);

        referenceCombobox.addValueChangeListener( e -> {

            boolean isValueSelected = e.getProperty().getValue() != null;

            continueButton.setEnabled(isValueSelected);

        });

        searchModeOptions.addItems(MatchMode.BEGINNING, MatchMode.ANYWHERE);

        searchModeOptions.setValue(MatchMode.BEGINNING);

        searchModeOptions.addStyleName(ValoTheme.OPTIONGROUP_HORIZONTAL);

        searchModeOptions.addStyleName(EditValoTheme.OPTIONGROUP_CAPTION_FIX);

        searchModeOptions.addValueChangeListener(e -> getPresenter().updateReferenceSearchMode((MatchMode)e.getProperty().getValue()));

        newPublicationButton = new Button("New");

        newPublicationButton.addClickListener( e -> getViewEventBus().publish(this,

                new ReferenceEditorAction(EditorActionType.ADD, newPublicationButton, null, this)

                ));

        newPublicationButton.setCaption("New");

        newPublicationButton.setWidth(ELEMENT_WIDTH);

        newPublicationLabel = new Label();

        newPublicationLabel.setVisible(false);

        removeNewPublicationButton = new Button("Delete");

        removeNewPublicationButton.setStyleName(ValoTheme.BUTTON_DANGER);

        removeNewPublicationButton.setWidth(ELEMENT_WIDTH);

        removeNewPublicationButton.addClickListener( e -> getViewEventBus().publish(this,

                new ReferenceEditorAction(EditorActionType.REMOVE, removeNewPublicationButton, null, this)

                ));

        removeNewPublicationButton.setVisible(false);

        Label labelLeft = new Label("Choose from existing publications");

        Label labelRight = new Label("Create a new publication");

        labelLeft.setWidth(ELEMENT_WIDTH);

        labelRight.setWidth(ELEMENT_WIDTH);

        CssLayout leftContainer = new CssLayout(labelLeft, referenceCombobox, searchModeOptions);

        CssLayout rightContainer = new CssLayout(labelRight, newPublicationButton, removeNewPublicationButton, newPublicationLabel);

        leftContainer.setWidth(ELEMENT_WIDTH);

        rightContainer.setWidth(ELEMENT_WIDTH);

        publicationLayout.addComponents(

                leftContainer,

                rightContainer

                );

        publicationLayout.setComponentAlignment(leftContainer, Alignment.TOP_RIGHT);

        publicationLayout.setComponentAlignment(rightContainer, Alignment.TOP_LEFT);

        continueButton = new Button("Continue");

        continueButton.setStyleName(ValoTheme.BUTTON_PRIMARY + " " + ValoTheme.BUTTON_HUGE);

        continueButton.setEnabled(false);

        continueButton.addClickListener(e -> {

            UUID refUuid = null;

            referenceCombobox.commit();

            if(referenceCombobox.getValue() != null){

                refUuid = referenceCombobox.getValue().getUuid();

            }

            getViewEventBus().publish(this,

                new RegistrationEditorAction(EditorActionType.ADD,

                        // passing the refId is hack, bit for some reason the presenter is always referring to the wrong view

                        refUuid,

                        continueButton,

                        null,

                        StartRegistrationViewBean.this)

                );

              }

            );

        vlayout.addComponents(publicationLayout, continueButton);

        vlayout.setComponentAlignment(publicationLayout, Alignment.TOP_CENTER);

        vlayout.setComponentAlignment(continueButton, Alignment.TOP_CENTER);

        addContentComponent(vlayout, 1f);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public boolean allowAnonymousAccess() {

        return false;

    }

    /**

     * {@inheritDoc}

     */

    @Override

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

        return null;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected String getHeaderText() {

        return "New Registration";

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected String getSubHeaderText() {

        return SUBHEADER_DEEFAULT;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void enter(ViewChangeEvent event) {

        getPresenter().handleViewEntered();

    }

    // ------- StartRegistrationView interface methods ----- //

    /**

     * @return the referenceCombobox

     */

    @Override

    public LazyComboBox<TypedEntityReference<Reference>> getReferenceCombobox() {

        return referenceCombobox;

    }

    /**

     * @return the newPublicationButton

     */

    @Override

    public Button getNewPublicationButton() {

        return newPublicationButton;

    }

    /**

     * @return the newPublicationButton

     */

    @Override

    public Button getRemoveNewPublicationButton() {

        return removeNewPublicationButton;

    }

    /**

     * @return the newPublicationButton

     */

    @Override

    public Button getContinueButton() {

        return continueButton;

    }

    /**

     * @return the newPublicationLabel

     */

    @Override

    public Label getNewPublicationLabel() {

        return newPublicationLabel;

    }

}