SessionTags.java

Go to the documentation of this file.

/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2022 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.elephant.web.tags;
 
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.turro.elephant.context.AbstractSessionObject;
import org.turro.elephant.context.IConstructor;
import org.turro.elephant.web.context.WebContext;
import org.turro.string.Strings;
 
public class SessionTags extends AbstractSessionObject<SessionTags> {
 
  public List<String> tags() {
    return tags;
  }
  
  public String path() {
    return tags.stream().collect(Collectors.joining("/"));
  }
  
  public String first() {
    return !tags.isEmpty() ? tags.get(0) : null;
  }
  
  public String current() {
    return !tags.isEmpty() ? tags.get(tags.size() - 1) : null;
  }
  
  public String previous() {
    return tags.size() > 1 ? tags.get(tags.size() - 2) : null;
  }
  
  public void removeLast() {
    if(!tags.isEmpty()) {
      tags.remove(tags.size() -1);
    }
  }
  
  public void add(WebContext context) {
    if(context != null) {
      add(context.getWebTag());
    }
  }
  
  public void add(String tag) {
    if(!Strings.isBlank(tag)) {
      tags.add(tag);
    }
  }
  
  /* Factory */
  
  public static String key() {
    return "web-tags";
  }
  
  public static SessionTags get() {
    return AbstractSessionObject.get(key(), () -> new SessionTags());
  }
 
  public static SessionTags get(HttpServletRequest request, HttpServletResponse response) {
    return AbstractSessionObject.get(request, response, key(), () -> new SessionTags());
  }
 
  public static SessionTags get(IConstructor constructor) {
    return AbstractSessionObject.get(constructor, key(), () -> new SessionTags());
  }
  
  public static void remove() {
    AbstractSessionObject.remove(key());
  }
 
  public static void remove(HttpServletRequest request, HttpServletResponse response) {
    AbstractSessionObject.remove(request, response, key());
  }
 
  public static void remove(IConstructor constructor) {
    AbstractSessionObject.remove(constructor, key());
  }
  
  private final List<String> tags;
  
  private SessionTags() {
    this.tags = new ArrayList<>();
  }
 
}