WebMap.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 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.impl.navigation;
 
import java.io.IOException;
import java.util.SortedSet;
import org.turro.elephant.context.IConstructor;
import org.turro.elephant.impl.context.ContextAdapter;
import org.turro.elephant.web.ElContext;
import org.turro.elephant.web.ElContextMap;
import org.turro.html.HTMLHelper;
 
public class WebMap {
 
  protected IConstructor constructor;
  protected int maxLevels;
 
  public WebMap(IConstructor constructor) {
    this.constructor = constructor;
  }
 
  public void draw() throws IOException {
    draw(3);
  }
 
  //TODO: intelligent draw: stack items depending on children count
  public void draw(int maxLevels) throws IOException {
    this.maxLevels = maxLevels;
    HTMLHelper hp = new HTMLHelper(constructor);
    ElContext root = ElContextMap.getRoot();
    hp.startTable("cellspacing='5px' width='100%' class='wmap'");
    hp.startTableRow("class='wmap'");
    SortedSet<ElContext> ctxs = new ContextAdapter(root.getChildren()).getVisible();
    int level = 0;
    boolean hasSingles = false;
    int ctxCount = 0;
    for(ElContext ctx : ctxs) {
      if(new ContextAdapter(ctx.getChildren()).getVisible().size() == 0) {
        hasSingles = true;
      } else {
        ctxCount++;
      }
    }
    if(hasSingles) {
      ctxCount++;
    }
    for(ElContext ctx : ctxs) {
      if(new ContextAdapter(ctx.getChildren()).getVisible().size() > 0) {
        hp.startTableCol("style='width:" + ((int)Math.ceil(100 / ctxCount)) + "%'")
          .startTag("ul", "class='wmap" + level + "'")
          .startTag("li", "class='wmap" + level + "'")
          .startAnchor(ctx.getWebPath(), ctx.getName(), "wmap" + level)
          .write(ctx.getName())
          .endTag();
        doChildren(hp, ctx, level + 1);
        hp.endTag("ul");
      }
    }
    if(hasSingles) {
      hp.startTableCol("style='width:" + ((int)Math.ceil(100 / ctxCount)) + "%'");
      for(ElContext ctx : ctxs) {
        if(new ContextAdapter(ctx.getChildren()).getVisible().size() == 0) {
          hp.startTag("ul", "class='wmap" + level + "'")
            .startTag("li", "class='wmap" + level + "'")
            .startAnchor(ctx.getWebPath(), ctx.getName(), "wmap" + level)
            .write(ctx.getName())
            .endTag();
          doChildren(hp, ctx, level + 1);
          hp.endTag("ul");
        }
      }
    }
    hp.endAllTags();
  }
 
  private void doChildren(HTMLHelper hp, ElContext current, int level) {
    if(level < maxLevels) {
      SortedSet<ElContext> ctxs= new ContextAdapter(current.getChildren()).getVisible();
      if (ctxs.size() > 0) {
        for(ElContext ctx : ctxs) {
          hp.startTag("ul", "class='wmap" + level + "'")
            .startTag("li", "class='wmap" + level + "'")
            .startAnchor(ctx.getWebPath(), ctx.getName(), "wmap" + level)
            .write(ctx.getName())
            .endTag();
          doChildren(hp, ctx, level + 1);
          hp.endTag("ul");
        }
      }
    }
  }
 
}