Answer below:

   James Carman Wrote:

   Couldn't you use a VelocityPanel to generate your markup and have it
   parse the markup after it's generated to avoid the whole "need to use
   the right markup ids" part? I was thinking about doing something like
   this for generating dynamic editor forms (a la Trails) for objects,
   since Wicket doesn't like you putting TextFields on <spans> (you must
   use an <input> tag). I was going to have a Velocity script that
   decides what type of tag to spit out based on the type of component in
   the list.

What I found simple, which I perhaps did not explain clearly.. Where to only 
accept basePanels in forexample addMenu method, that way a base panel would 
look something like this:



public class BasePanelItem extends Panel {

        public final static String ITEM_ID = "item";

        public AccordionPanelItem() {
                super(ITEM_ID);
        }

Now we have the id fixed...

Then the user only need add what ever user wants when user extends basePanelItem.. So this solves that too... And the problem with attaching to wrong tags are solved too... There might be some overhead because each time you want todo something special you need to create a panel, but I think it's worth it..

PS, youve seen the web beans project right? http://wicketwebbeans.sourceforge.net/



regards Nino


Nino Saturnino Martinez Vazquez Wael wrote:
Sure there a dozens of ways todo this, mine is just one of them. Im starting a new thread since it'll be more exposed then.

The idea is following:

Parent:

public class BasePage extends WebPage {

  protected final String LINK_LABEL_ID = "linkText";
  protected final String LINK_ID = "link";

  protected final String FOOTER_ID = "item";
  protected final String HEADER_ID = "item";

protected List<WebMarkupContainer> generalAccordionItem = new ArrayList<WebMarkupContainer>();

protected List<WebMarkupContainer> footer = new ArrayList<WebMarkupContainer>(); protected List<WebMarkupContainer> header = new ArrayList<WebMarkupContainer>();

  private AccordionPanel accordionPanel;

  /**
   * Constructor that is invoked when page is invoked without a session.
   *
   * @param parameters
   *            Page parameters
   */
  public BasePage() {
      accordionPanel = new AccordionPanel("accordionMenu");
      add(accordionPanel);

      add(new ListView("footerContent", footer) {
          @Override
          protected void populateItem(ListItem item) {
WebMarkupContainer webMarkupContainer = (WebMarkupContainer) item
                      .getModelObject();
              item.add(webMarkupContainer);

          }
      });
      add(new ListView("headerContent", header) {
          @Override
          protected void populateItem(ListItem item) {
WebMarkupContainer webMarkupContainer = (WebMarkupContainer) item
                      .getModelObject();
              item.add(webMarkupContainer);

          }
      });

}
  protected void addMenu(AccordionPanelItem accordionPanelItem) {
      accordionPanel.addMenu(accordionPanelItem);
  };

  protected void addFooter(WebMarkupContainer webMarkupContainer) {
      footer.add(webMarkupContainer);
  };
  protected void addHeader(WebMarkupContainer webMarkupContainer) {
      header.add(webMarkupContainer);
  };

Subs/Children then calls the methods... Problem with this technique is that you need to use the right markup id's.. To make sure they are always set, and giving full control to the child/sub on what to add, I'd suggest that you create a BasePanel which encapsules the id, and then required that instead of a markupcontainer, that way subs/child only need to have panels that extend the basepanel...

But it depends on your needs, mine weren't that tricky..


regards Nino


--
-Wicket for love
-Jme for fun

Nino Martinez Wael
Java Specialist @ Jayway DK
http://www.jayway.dk
+45 2936 7684


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