package org.jaxen.test;

import java.util.List;

import junit.framework.TestCase;

import org.jaxen.Navigator;
import org.jaxen.XPath;
import org.jaxen.jericho.DocumentNavigator;
import org.jaxen.jericho.JerichoXPath;

import au.id.jericho.lib.html.Element;
import au.id.jericho.lib.html.Source;

public class JerichoNavigatorTest extends TestCase {

  private String testUrl = "http://path.to.your/document.html";
  private String[] xpaths = new String[] {
    "/html/body",
    "//body",
    "/html/body/../head",
    "/html/head/title/text()",
    "//div[@class='articlecontent']",
    "//div[@class]"
  };

  public void testParsingVisitor() throws Exception {
    Navigator navigator = DocumentNavigator.getInstance();
    Source doc = (Source) navigator.getDocument(testUrl);
    for (int i = 0; i < xpaths.length; i++) {
      String xpath = xpaths[i];
      System.out.println("*** Evaluating: " + xpath);
      XPath expr = new JerichoXPath(xpath, navigator);
      Object result = expr.evaluate(doc);
      if (result instanceof Element) {
        System.out.println("Element: " + ((Element) result).getName());
      } else if (result instanceof List) {
        System.out.println("List: size=" + ((List) result).size());
        List elements = (List) result;
        for (int j = 0; j < elements.size(); j++) {
          Element element = (Element) elements.get(j);
          System.out.println("Element: " + ((Element) element).getName());
        }
      } else if (result instanceof String) {
        System.out.println("String: " + ((String) result));
      } else if (result instanceof Number) {
        System.out.println("Number: " + ((Number) result));
      } else if (result instanceof Boolean) {
        System.out.println("Boolean: " + ((Boolean) result));
      } else {
        System.out.println("Unknown: " + result == null ? 
          "NULL" : result.getClass().getName());
      }
    }
  }
}