EnumListbox.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 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.zkoss.input;
 
import org.turro.i18n.I_;
import org.zkoss.zul.Listitem;
 
public class EnumListbox<V extends Enum<V>> extends GenericListbox<V> {
 
  private V[] values;
  private boolean allowNull;
  private String nullLabel = "None";
 
  public EnumListbox(V[] values) {
    this.values = values;
  }
 
  public boolean isAllowNull() {
    return allowNull;
  }
 
  public void setAllowNull(boolean allowNull) {
    this.allowNull = allowNull;
  }
 
  public String getNullLabel() {
    return nullLabel;
  }
 
  public void setNullLabel(String nullLabel) {
    this.nullLabel = nullLabel;
  }
 
  public V[] getValues() {
    return values;
  }
 
  public void setValues(V[] values) {
    this.values = values;
  }
 
  @Override
  protected void populateList() {
    if(values == null) return;
    if(allowNull) {
      Listitem li = new Listitem(I_.get(nullLabel), null);
      appendChild(li);
    }
    for(V v : values) {
      Listitem li = new Listitem(getString(v), v);
      appendChild(li);
    }
  }
 
  protected String getString(V v) {
    return I_.byKey(v.toString());
  }
 
}