TagLabel.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2021 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.tags;
 
import java.util.Collection;
import org.turro.string.Strings;
import org.turro.annotation.ElephantPlugin;
import org.turro.elephant.context.Application;
import org.turro.entities.Entities;
import org.turro.path.Path;
import org.turro.zkoss.label.LabelEditable;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.ext.AfterCompose;
import org.zkoss.zul.Hbox;
import org.zkoss.zul.Label;
 
@ElephantPlugin(label="tag-label")
public class TagLabel extends Hbox implements ITagCtrl, AfterCompose, EventListener {
 
  private TagSet set;
  private String entityPath, role;
  private Object entity;
 
  public TagLabel() {
    setSclass("z-valign-middle tagitLabel");
    setAlign("center");
  }
 
  @Override
  public void setEntity(Object entity) {
    this.entity = entity;
    if(entity instanceof String) {
      entityPath = (String) entity;
    } else {
      entityPath = Entities.getController(entity).getPath();
    }
  }
 
  @Override
  public void setEntityPath(String entityPath) {
    this.entityPath = entityPath;
  }
 
  @Override
  public void updateControls() {
    afterCompose();
  }
 
  @Override
  public void afterCompose() {
    Application app = Application.getApplication();
    role = new Path(entityPath).getRoot();
//    if(!app.isInRole(role + "-tagit:list")) {
//      setVisible(false);
//    }
    if(set == null) {
      Collection<String> choices = Tags.tagChoices(entityPath);
      getChildren().clear();
      set = Tags.getTags(entityPath);
      LabelEditable le;
      if(!set.isEmpty()) {
        appendChild(new Label("["));
        for(TagItem ti : set) {
          le = new LabelEditable(ti.getTagName());
          le.setEditable(app.isInRole(role + "-tagit:edit"));
          le.setEditorCols(12);
          le.setValues(choices);
          appendChild(le);
          le.addEventListener(Events.ON_CHANGE, this);
        }
        appendChild(new Label("]"));
      }
      if(app.isInRole(role + "-tagit:new")) {
        le = new LabelEditable("", "/_zul/images/tag_new.png");
        le.setEditorCols(12);
        le.setValues(choices);
        appendChild(le);
        le.addEventListener(Events.ON_CHANGE, this);
      }
      for(Object obj : getChildren()) {
        if(obj instanceof AfterCompose) {
          ((AfterCompose) obj).afterCompose();
        }
      }
    }
  }
 
  @Override
  public void onEvent(Event event) throws Exception {
    if(event.getData() instanceof LabelEditable) {
      LabelEditable le = (LabelEditable) event.getData();
      if(!Strings.isBlank(le.getLabel())) {
        if(!Strings.isBlank(le.getImage())) {
          // add tag
          Tags.addTag(entityPath, le.getLabel());
        } else {
          // change tag
          Tags.changeTag(entityPath, le.getOldLabel(), le.getLabel());
        }
      } else {
        if(!Strings.isBlank(le.getImage())) {
          // nothing, insertion cancelled
        } else {
          // delete tag
          if(Application.getApplication().isInRole(role + "-tagit:delete")) {
            Tags.removeTag(entityPath, le.getOldLabel());
          }
        }
      }
    }
    set = null;
    afterCompose();
  }
 
}