PubCategoryItem.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2015 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.publication.zul.tree;
 
import java.util.Collection;
import org.turro.i18n.I_;
import org.turro.publication.entity.PublicationCategory;
import org.turro.publication.util.PublicationCategories;
import org.zkoss.zk.ui.ext.AfterCompose;
import org.zkoss.zul.Treechildren;
import org.zkoss.zul.Treeitem;
 
public class PubCategoryItem extends Treeitem implements AfterCompose {
 
  private Treechildren children;
 
  public PubCategoryItem(PublicationCategory category) {
    super();
    setValue(category);
    setLabel(category == null ? I_.get("All") : category.getName());
    setTooltiptext(getLabel());
  }
 
  @Override
  public PubCategoryTree getTree() {
    return (PubCategoryTree) super.getTree();
  }
 
  public PublicationCategory getCategory() {
    return (PublicationCategory) getValue();
  }
 
  public void showContents() {
    fillCategory();
    setOpen(true);
  }
 
  public void reloadContents() {
    if(children != null) {
      children.getChildren().clear();
      showContents();
    }
  }
 
  public boolean isLeaf() {
    return getCategory() != null;
  }
 
  public PubCategoryItem addCategory(PublicationCategory category) {
    PubCategoryItem cat = new PubCategoryItem(category);
    children.appendChild(cat);
    cat.afterCompose();
    return cat;
  }
 
  private void fillCategory() {
    if(children != null && children.getChildren().isEmpty()) {
      for(PublicationCategory cat : getCategoryChildren()) {
        addCategory(cat);
      }
    }
  }
 
  private void addChildrenSpace() {
    if(!isLeaf()) {
      children = new Treechildren();
      appendChild(children);
      fillCategory();
      setOpen(true);
    }
  }
 
  public Collection<PublicationCategory> getCategoryChildren() {
    return PublicationCategories.getPublicationCategories();
  }
 
  @Override
  public void afterCompose() {
    addChildrenSpace();
  }
 
}