AccountInput.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2012 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.contacts.zul.contact;
 
import org.turro.contacts.Contact;
import org.turro.contacts.db.ContactsPU;
import org.turro.elephant.db.WhereClause;
import org.turro.i18n.I_;
import org.zkoss.lang.Strings;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.WrongValueException;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zul.Constraint;
import org.zkoss.zul.Textbox;
 
public class AccountInput extends Textbox {
  
  private Contact contact;
 
  public AccountInput(final Contact contact) throws WrongValueException {
    super(contact.getEmailAccount());
    this.contact = contact;
    setCols(30);
    Constraint ctt = new Constraint() {
      @Override
      public void validate(Component comp, Object value) throws WrongValueException {
        if(!isReadonly() && !Strings.isEmpty((String) value)) {
          if(exists((String) value)) {
            setText("");
            throw new WrongValueException(AccountInput.this, I_.get("Login already exists"));
          }
        }
      }
    };
    setConstraint(ctt);
    addEventListener(Events.ON_CHANGE, new EventListener<Event>() {
      @Override
      public void onEvent(Event event) throws Exception {
        contact.setEmailAccount(getValue());
      }
    });
  }
 
  private boolean exists(String value) {
    WhereClause wc = new WhereClause();
    wc.addClause("select distinct c from Contact as c");
    wc.addClause("where c.id <> :id and c.emailAccount = :email");
    wc.addNamedValue("id", contact.getId());
    wc.addNamedValue("email", value);
    return !new ContactsPU().getResultList(wc).isEmpty();
  }
 
}