DaoHtmlTree.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2013 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.jpa.iterator;
 
import java.lang.reflect.ParameterizedType;
import java.util.List;
import org.turro.string.ObjectString;
import org.turro.string.Strings;
import org.turro.collections.Item;
import org.turro.elephant.calendar.ElephantCalendar;
import org.turro.elephant.context.IConstructor;
import org.turro.jpa.Dao;
import org.turro.marker.ElephantMarker;
import org.turro.visual.EmptyVisualElements;
import org.turro.visual.VisualElements;
 
public abstract class DaoHtmlTree<E, ID> extends DaoTree<E, ID> {
 
  protected IConstructor constructor;
  protected ElephantMarker marker;
 
  private String treeTemplate, fullTemplate;
  private ID itemID;
  private final Class<ID> idClass;
  
  public DaoHtmlTree(Dao dao, ElephantMarker marker) {
    super(dao);
    this.marker = marker;
    this.constructor = marker.getConstructor();
    this.idClass = (Class<ID>) ((ParameterizedType) getClass()
            .getGenericSuperclass()).getActualTypeArguments()[1];
  }
 
  public String getTreeTemplate() {
    return Strings.isBlank(treeTemplate) ? "tree" : treeTemplate;
  }
 
  public void setTreeTemplate(String treeTemplate) {
    this.treeTemplate = treeTemplate;
  }
 
  public String getFullTemplate() {
    return Strings.isBlank(fullTemplate) ? "full" : fullTemplate;
  }
 
  public void setFullTemplate(String fullTemplate) {
    this.fullTemplate = fullTemplate;
  }
  
  public void render() {
    marker.put("iterator", this);
    itemID = (ID) ObjectString.parseString(constructor.getParameter("item"), idClass, false);
    if(itemID != null) {
      renderItem(marker, getEntity(itemID));
    } else {
      if(!isEmpty()) {
        renderTree(marker, getItems());
      }
    }
  }
 
  public String parse() {
    marker.put("iterator", this);
    itemID = (ID) ObjectString.parseString(constructor.getParameter("item"), idClass, false);
    if(itemID != null) {
      return parseItem(marker, getEntity(itemID));
    } else {
      if(!isEmpty()) {
        return parseTree(marker, getItems());
      }
    }
    return "";
  }
 
  /* Visuals */
 
  public VisualElements getVisuals() {
    if(_visuals == null) {
      _visuals = loadVisuals();
    }
    return _visuals;
  }
  
  private VisualElements _visuals;
  
  protected VisualElements loadVisuals() {
    return new EmptyVisualElements();
  }
  
  /* End visuals */
  
  public void renderSelected() {}
  public String parseSelected() { return ""; }
  
  protected abstract void renderTree(ElephantMarker marker, List<Item<E, ID>> items);
  protected abstract void renderItem(ElephantMarker marker, E item);
 
  protected abstract String parseTree(ElephantMarker marker, List<Item<E, ID>> items);
  protected abstract String parseItem(ElephantMarker marker, E item);
  
}