RelatedControl.java

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/*
 * 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.related;
 
import org.turro.elephant.entities.db.Related;
import org.turro.entities.Entities;
import org.zkoss.zk.ui.HtmlBasedComponent;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.ext.AfterCompose;
import org.zkoss.zul.Vlayout;
 
public class RelatedControl extends Vlayout implements AfterCompose {
 
  private String entityPath;
  private boolean allowMultiple = false, atRight = true;
  private IAddRelated newControl = null;
 
  public String getEntityPath() {
    return entityPath;
  }
 
  public void setEntityPath(String entityPath) {
    this.entityPath = entityPath;
  }
  
  public void setEntity(Object entity) {
    setEntityPath(Entities.getController(entity).getPath());
  }
 
  public void setNewControl(IAddRelated newControl) {
    this.newControl = newControl;
  }
 
  public void setAllowMultiple(boolean allowMultiple) {
    this.allowMultiple = allowMultiple;
  }
 
  @Override
  public void afterCompose() {
    showRelations();
    addEventListener(Events.ON_CHANGE, (Event event) -> {
      showRelations();
    });
  }
 
  private void showRelations() {
    getChildren().clear();
    HtmlBasedComponent tmpCtrl = (newControl != null ? newControl.getControl(this) : null);
    for(Related rp : Relateds.from(entityPath).destinations()) {
      if(!allowMultiple) tmpCtrl = null;
      appendChild(new RelatedLine(rp, true, (atRight ? tmpCtrl : null)));
      tmpCtrl = null;
    }
    for(Related rp : Relateds.from(entityPath).origins()) {
      if(!allowMultiple) tmpCtrl = null;
      appendChild(new RelatedLine(rp, false, (atRight ? tmpCtrl : null)));
      tmpCtrl = null;
    }
    if(tmpCtrl != null) {
      appendChild(tmpCtrl);
      if(tmpCtrl instanceof AfterCompose) {
        ((AfterCompose) tmpCtrl).afterCompose();
      }
    }
  }
  
}