annis.gui.admin.OptionalDateTimeField.java Source code

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Here is the source code for annis.gui.admin.OptionalDateTimeField.java

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/*
 * Copyright 2014 Corpuslinguistic working group Humboldt University Berlin.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package annis.gui.admin;

import annis.gui.converter.DateTimeConverter;
import com.vaadin.data.Property;
import com.vaadin.ui.CheckBox;
import com.vaadin.ui.Component;
import com.vaadin.ui.CustomField;
import com.vaadin.ui.DateField;
import com.vaadin.ui.HorizontalLayout;
import java.util.Objects;
import org.joda.time.DateTime;

/**
 *
 * @author Thomas Krause <krauseto@hu-berlin.de>
 */
public class OptionalDateTimeField extends CustomField<DateTime> {

    private final DateField dateField;
    private final CheckBox checkBox;
    private final HorizontalLayout layout;

    public OptionalDateTimeField() {
        this("");
    }

    public OptionalDateTimeField(String checkboxCaption) {
        dateField = new DateField();
        dateField.setConverter(new DateTimeConverter());
        dateField.setDateFormat("yyyy-MM-dd");
        dateField.setImmediate(true);
        dateField.setPropertyDataSource(OptionalDateTimeField.this);

        checkBox = new CheckBox(checkboxCaption);
        checkBox.addValueChangeListener(new ValueChangeListener() {
            @Override
            public void valueChange(Property.ValueChangeEvent event) {
                if (Objects.equals(event.getProperty().getValue(), Boolean.TRUE)) {
                    if (getValue() == null) {
                        // only set something if changed
                        setValue(DateTime.now());
                    }
                } else {
                    if (getValue() != null) {
                        // only set something if changed
                        setValue(null);
                    }
                }
            }
        });

        layout = new HorizontalLayout(dateField, checkBox);
    }

    @Override
    protected Component initContent() {
        return layout;
    }

    public void setCheckboxCaption(String caption) {
        checkBox.setCaption(caption);
    }

    @Override
    protected void setInternalValue(DateTime newValue) {
        super.setInternalValue(newValue);
        dateField.setEnabled(newValue != null);
        checkBox.setValue(newValue != null);
    }

    @Override
    public Class<? extends DateTime> getType() {
        return DateTime.class;
    }

}