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Demo

PageElement.java

package edu.virtualschool.jwaa.xml;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.log4j.Logger;
import org.jdom.Attribute;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.xpath.XPath;
import org.mortbay.html.Page;

import edu.virtualschool.jwaa.Fault;
import edu.virtualschool.jwaa.bean.DemoRole;

public class PageElement extends edu.virtualschool.jwaa.MetaPage  
{
  public final String id;
  public final PagesElement pages;
  public String text;
  public final Element element;
  public final List childPageList = new ArrayList();
  public FormElement form = null;
  boolean isCommited = false;

  final static Logger logger = Logger.getLogger(Page.class.getName());
  final static Outputter outputter = new Outputter(true);
  private static XPath formPath = null;
  private static XPath idrefPath = null;
  
  public PageElement(PagesElement pages, Element element) 
    throws ValidationFault, IOFault
  {
    super(
        PageElement.class,
        getURL(pages, element.getAttributeValue("id")),
        element.getAttributeValue("name"),
        element.getAttributeValue("title"),
        DemoRole.findRole(element.getAttributeValue("requiresRole"))
    );
    this.id = element.getAttributeValue("id");
    this.pages = pages;
    this.element = element;

    getApplication().dictionary.put(id, getLink().toString());

    List childList = element.getChildren("child", element.getNamespace());
    for (Iterator iterator = childList.iterator(); iterator.hasNext();)
    {
      Element child = (Element) iterator.next();
      String id = child.getAttributeValue("idref");
      if (id == null)
        throw new ValidationFault("child requires an idref attribute");
      childPageList.add(id);
      iterator.remove();
    }
  }
  final void commit() throws ValidationFault
  {
    if (isCommited)
      return;
    for (Iterator iterator = childPageList.iterator(); iterator.hasNext(); )
    {
      String id = (String)iterator.next();
      PageElement child = pages.getApplication().findPage(id);
      if (child == null)
        throw new ValidationFault("child "+ id + " of page "+this+" not found");
      addChildNode(child);
    }
    try
    {
      if (formPath == null)
        formPath = XPath.newInstance(".//form");
      List formList = formPath.selectNodes(element);
      if (formList.size() == 0)
        this.form = null;
      else if (formList.size() > 1)
        throw new ValidationFault("Multiple forms/page are not yet supported");
      else
      {
        Element formElement = (Element)formList.get(0);
        this.form = new FormElement(this, formElement);
      }
    }
    catch (IOFault e)
    {
      throw new ValidationFault(e.getMessage(), e);
    }
    catch (JDOMException e)
    {
      throw new ValidationFault(e.getMessage(), e);
    }
    try
    {
      if (idrefPath == null)
        idrefPath = XPath.newInstance(".//@idref");
      List idrefList = idrefPath.selectNodes(element);
      for (Iterator iterator = idrefList.iterator(); iterator.hasNext(); )
      {
        Attribute attr = (Attribute)iterator.next();
        String key = attr.getValue();
        String val = (String)getApplication().dictionary.get(key);
        if (val == null)
          throw new ValidationFault("idref=\""+key+" not found in page "+this);
        attr.setName("href");
        attr.setValue(val);
      }
      for (Iterator iterator = element.getAttributes().iterator(); iterator.hasNext(); )
      {
        iterator.next();
        iterator.remove();
      }
      element.setName("div");
      element.setAttribute("class", "page");
      String logicText = "";
      if (form != null)
        logicText = form.logicText+"\n";
      this.text = logicText + 
        "#header()\n"+
        outputter.output(element)+
        "#footer()\n";

//      XPath hrefPath = XPath.newInstance(".//@href");
//      List hrefList = hrefPath.selectNodes(element);
//      for (Iterator iterator = hrefList.iterator(); iterator.hasNext(); )
//      {
//        Attribute attr = (Attribute)iterator.next();
//        String value = attr.getValue();
//        attr.setValue("$self.encodeURL('"+value+"')");
//      }
    }
    catch (JDOMException e1)
    {
      throw new ValidationFault("JDOM fault", e1);
    }
    isCommited = true;
  }
  final static String getURL(PagesElement pages, String id)
    throws ValidationFault
  {
    if (id == null)
      throw new ValidationFault("page requires an id attribute");
    return pages.getApplication().getRoot().id+
        "/"+pages.getApplication().id + "/"+id;
  }
  public final String getId()
  {
    return id;
  }
  GenericForm getFormInstance(Controller page) throws Fault
  {
    if (form == null)
      return null;
    else
      return form.getFormInstance(page);
  }
  String getText()
  {
    return text;
  }
  public final String getFilePath()
  {
    return pages.fileMonitor.toString();
  }
  public PagesElement getPages()
  {
    return pages;
  }
  public final ApplicationElement getApplication()
  {
    ApplicationElement c = pages.getApplication();
    return c;
  }
  public final List getChildPageIDs()
  {
    return childPageList;
  }
  public String toString()
  {
    return id;
  }
}