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.component;

import com.vaadin.data.fieldgroup.BeanFieldGroup;

import com.vaadin.data.util.BeanItem;

import com.vaadin.event.FieldEvents.TextChangeEvent;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Component;

import com.vaadin.ui.CssLayout;

import com.vaadin.ui.CustomField;

import com.vaadin.ui.GridLayout;

import com.vaadin.ui.Label;

import com.vaadin.ui.TextField;

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

import eu.etaxonomy.cdm.strategy.parser.TimePeriodParser;

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

/**

 * @author a.kohlbecker

 * @since Apr 6, 2017

 *

 */

public class TimePeriodField extends CustomField<TimePeriod> {

    private static final long serialVersionUID = -7377778547595966252L;

    private static final String PRIMARY_STYLE = "v-time-period-field";

    private BeanFieldGroup<TimePeriod> fieldGroup = new BeanFieldGroup<>(TimePeriod.class);

    TextField parseField = null;

    TextField freeText = null;

    Label toLabel = null;

    GridLayout grid = new GridLayout(3, 3);

    /**

     *

     */

    public TimePeriodField() {

        super();

    }

    /**

     * @param string

     */

    public TimePeriodField(String string) {

        this();

        setCaption(string);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected Component initContent() {

        super.setPrimaryStyleName(PRIMARY_STYLE);

        parseField = new TextField();

        parseField.setWidth(100, Unit.PERCENTAGE);

        parseField.setInputPrompt("This field will parse the entered time period");

        parseField.addTextChangeListener(e -> parseInput(e));

        PartialDateField startDate = new PartialDateField("Start");

        startDate.setInputPrompt("dd.mm.yyy");

        PartialDateField endDate = new PartialDateField("End");

        endDate.setInputPrompt("dd.mm.yyy");

        freeText = new TextField("FreeText");

        freeText.setWidth(100, Unit.PERCENTAGE);

        fieldGroup.bind(startDate, "start");

        fieldGroup.bind(endDate, "end");

        fieldGroup.bind(freeText, "freeText");

        toLabel = new Label("\u2014"); // EM DASH : 0x2014

        int row = 0;

        grid.addComponent(parseField, 0, row, 2, row);

        row++;

        grid.addComponent(startDate, 0, row);

        grid.addComponent(toLabel, 1, row);

        grid.setComponentAlignment(toLabel, Alignment.BOTTOM_CENTER);

        grid.addComponent(endDate, 2, row);

        row++;

        grid.addComponent(freeText, 0, row, 2, row);

        grid.iterator().forEachRemaining(c -> c.setStyleName(getStyleName()));

        CssLayout marginwrapper = new CssLayout();

        marginwrapper.setStyleName("margin-wrapper");

        marginwrapper.addComponent(grid);

        applyDefaultStyles();

        return marginwrapper;

    }

    /**

     * @param e

     * @return

     */

    private void parseInput(TextChangeEvent e) {

        if(!e.getText().isEmpty()){

            TimePeriod parsedPeriod = TimePeriodParser.parseString(e.getText());

            fieldGroup.setItemDataSource(new BeanItem<TimePeriod>(parsedPeriod));

        }

    }

    /**

     *

     */

    private void applyDefaultStyles() {

        if(parseField != null) {

            parseField.addStyleName(RegistrationStyles.HELPER_FIELD);

            toLabel.addStyleName("to-label");

        }

    }

    @Override

    protected void setInternalValue(TimePeriod newValue) {

        super.setInternalValue(newValue);

        fieldGroup.setItemDataSource(new BeanItem<TimePeriod>(newValue));

    }

    @Override

    public void setStyleName(String style) {

        super.setStyleName(style);

        grid.iterator().forEachRemaining(c -> c.setStyleName(style));

        applyDefaultStyles();

    }

    @Override

    public void addStyleName(String style) {

        super.addStyleName(style);

        grid.iterator().forEachRemaining(c -> c.addStyleName(style));

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public Class<? extends TimePeriod> getType() {

        return TimePeriod.class;

    }

}