TimeLabel.java

/**
 * 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 org.brixcms.demo.web.tile.time;

import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.IModel;
import org.brixcms.jcr.api.JcrNode;
import org.brixcms.jcr.wrapper.BrixNode;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Label used to render time in {@link TimeTile}
 *
 * @author igor.vaynberg
 */
public class TimeLabel extends Label {
    private static final long serialVersionUID = 1L;

    /**
     * Constructor
     *
     * @param id        component id
     * @param nodeModel time tile node
     */
    public TimeLabel(String id, IModel<BrixNode> nodeModel) {
        super(id, new TimeStringModel(nodeModel));
    }

    /**
     * Constructs time expression string
     *
     * @author igor.vaynberg
     */
    private static class TimeStringModel extends AbstractReadOnlyModel<String> {
        private static final long serialVersionUID = 1L;

        /**
         * jcr tile node that contains the time expression format
         */
        private final IModel<BrixNode> tileNode;

        /**
         * Constructor
         *
         * @param tileNode
         */
        public TimeStringModel(IModel<BrixNode> tileNode) {
            super();
            this.tileNode = tileNode;
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public String getObject() {
            // get the tile's jcr node and retrieve the format expression
            JcrNode tileNode = this.tileNode.getObject();
            String format = tileNode.hasProperty("format") ? tileNode.getProperty("format")
                    .getString() : null;

            // create the time expression
            if (format == null) {
                format = "MM/dd/yyyy HH:mm:ss z";
            }
            DateFormat fmt = new SimpleDateFormat(format);
            return fmt.format(new Date());
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void detach() {
            // detach inner model
            tileNode.detach();

            super.detach();
        }
    }
}