InputEnum.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.dialog;
 
import java.util.Arrays;
import org.turro.i18n.I_;
import org.zkoss.zk.ui.ext.AfterCompose;
import org.zkoss.zul.Radio;
import org.zkoss.zul.Radiogroup;
 
public class InputEnum<V extends Enum<V>> extends Radiogroup implements AfterCompose {
 
  private V[] values;
  private boolean populated;
  private V internalValue;
 
  public InputEnum(V[] values) {
    this.values = values;
  }
 
  public V getObjectValue() {
    if(!populated) {
      return internalValue;
    } else {
      int i = getSelectedIndex();
      return i > -1 ? values[i] : null;
    }
  }
 
  public void setObjectValue(V objectValue) {
    if(!populated) {
      this.internalValue = objectValue;
    } else {
      setSelectedIndex(Arrays.binarySearch(values, objectValue));
    }
  }
 
  protected void populateList() {
    if(values == null) return;
    for(V v : values) {
      Radio r  = new Radio(getString(v), getImage(v));
      appendChild(r);
    }
  }
 
  protected String getString(V v) {
    return I_.byKey(v.toString());
  }
 
  protected String getImage(V v) {
    return null;
  }
 
  @Override
  public void afterCompose() {
    populateList();
    populated = true;
    if(internalValue != null) {
      setObjectValue(internalValue);
      internalValue = null;
    }
  }
 
}