ContextTree.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.elephant.web;
 
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zul.Tree;
import org.zkoss.zul.Treechildren;
import org.zkoss.zul.Treeitem;
 
public class ContextTree extends Tree {
 
  private final Treechildren children;
 
  public ContextTree() {
    children = new Treechildren();
    appendChild(children);
    initiate();
  }
 
  private void initiate() {
    reload();
    addEventListener(Events.ON_SELECT, (Event event) -> {
      if(getSelectedItem() instanceof ContextItem) {
        ((ContextItem) getSelectedItem()).showContents();
      }
    });
  }
 
  public void reload() {
    children.getChildren().clear();
    addContext(ElContextMap.getRoot(), false).showContents();
  }
 
  public ContextItem addContext(ElContext context, boolean loadOnDemand) {
    ContextItem ci = new ContextItem(context, loadOnDemand);
    children.appendChild(ci);
    return ci;
  }
 
  public void selectPath(String path) {
    for(Treeitem item : getItems()) {
      ContextItem ci = (ContextItem) item;
      if(path.equals(ci.getElContext().getPath())) {
        setSelectedItem(item);
        break;
      }
    }
    Treeitem parent = getSelectedItem().getParentItem();
    while(parent != null) {
      parent.setOpen(true);
      parent = parent.getParentItem();
    }
  }
 
}