Re: Feedback panel and form buttons in Wicket 6

[Martin Makundi]

It is possible to add feedback panel automatically by implementing
org.apache.wicket.ajax.IListener

Here are are some examples:


/**
   * TODO Suggest for jira addition, see
   *
   * 
http://apache-wicket.1842946.n4.nabble.com/HowTo-inject-FeedbackPanel-td2295430.html
   *
   * @author Martin
   *
   * Copyright (c) Koodaripalvelut.com Finland 2008
   */
  public static class TopMostVisibleFeedbackPanelAjaxAutoAdderListener
implements IListener {
    private IFeedbackMessageFilter feedbackMessageFilter;

    /**
     * @see 
org.apache.wicket.ajax.AjaxRequestTarget.IListener#onBeforeRespond(java.util.Map,
org.apache.wicket.ajax.AjaxRequestTarget)
     */
    @Override
    public void onBeforeRespond(Map<String, Component> map,
AjaxRequestTarget target) {
      FeedbackMessages feedbackMessages = Session.get().getFeedbackMessages();

      List<FeedbackMessage> messages =
feedbackMessages.messages(feedbackMessageFilter);

      if (!messages.isEmpty()) {
        Object feedbackPanel = null;

        for (FeedbackMessage feedbackMessage : messages) {
          Component component = feedbackMessage.getReporter();
          if (component != null) {
            feedbackPanel = addFeedbackPanel(target, component);
          }
        }

        if (feedbackPanel == null) {
          // Some messages still want to become visible, try finding
feedbackpanel from page
          addFeedbackPanel(target, target.getPage());
        }
      }
    }

    /**
     * @param target
     * @param component
     * @return Object
     */
    private Object addFeedbackPanel(AjaxRequestTarget target,
Component component) {
      Object feedbackPanel = new
VisitTopMostMarkupContainerPageOrModalWindowHavingVisibleChild(component,
IFeedback.class).getFoundChild();

      if (feedbackPanel instanceof Component) {
        if (!((Component) feedbackPanel).getOutputMarkupId()) {
          Utils.errorLog(TakpApplication.class, "Cannot update
feedbackComponent that does not have setOutputMarkupId(" +
component.getMarkupId() + ") property set to true. Component: " +
component.getPageRelativePath() + ": " + component);
        } else {
          target.addComponent((Component) feedbackPanel); // Add
feedbackPanel to the ajax request target
          return feedbackPanel;
        }
      }

      return null;
    }

    /**
     * @param feedbackMessageFilter the feedbackMessageFilter to set
     * @return NearestFeedbackPanelAjaxAutoAdderListener
     */
    public TopMostVisibleFeedbackPanelAjaxAutoAdderListener
setFeedbackMessageFilter(IFeedbackMessageFilter feedbackMessageFilter)
{
      this.feedbackMessageFilter = feedbackMessageFilter;
      return this;
    }

    /**
     * @return the feedbackMessageFilter
     */
    public IFeedbackMessageFilter getFeedbackMessageFilter() {
      return feedbackMessageFilter;
    }

    /**
     * @see 
org.apache.wicket.ajax.AjaxRequestTarget.IListener#onAfterRespond(java.util.Map,
org.apache.wicket.ajax.AjaxRequestTarget.IJavascriptResponse)
     */
    @Override
    public void onAfterRespond(Map<String, Component> map,
org.apache.wicket.ajax.AjaxRequestTarget.IJavascriptResponse response)
{
      // Override if necessary
    }
  }


/**
   * @author Martin
   *
   * Copyright (c) Koodaripalvelut.com Finland 2008
   */
  public static class
ErrorComponentAndNearestFeedbackPanelAjaxAutoAdderListener extends
TopMostVisibleFeedbackPanelAjaxAutoAdderListener {
    /**
     * @see 
com.tustor.tuntinetti.view.TakpApplication.TopMostVisibleFeedbackPanelAjaxAutoAdderListener#onBeforeRespond(java.util.Map,
org.apache.wicket.ajax.AjaxRequestTarget)
     */
    @Override
    public void onBeforeRespond(Map<String, Component> map,
AjaxRequestTarget target) {
      super.onBeforeRespond(map, target);
      WicketUtils.ajaxRefreshErrorComponents(target);
    }
  }

/**
   * @param target
   */
  public static void ajaxRefreshErrorComponents(AjaxRequestTarget target) {
    List<FeedbackMessage> feedbackMessages =
Session.get().getFeedbackMessages().messages(new
ErrorLevelFeedbackMessageFilter(FeedbackMessage.ERROR));

    for (FeedbackMessage feedbackMessage : feedbackMessages) {
      if (feedbackMessage.getReporter() instanceof FormComponent) {
        if (feedbackMessage.getReporter().getOutputMarkupId()) {
          target.addComponent(feedbackMessage.getReporter());
        } else {
          Utils.errorLog(WicketUtils.class, "Cannot update component
that does not have setOutputMarkupId property set to true. Component:
"
              + feedbackMessage.getReporter().getPageRelativePath());
        }
      }
    }
  }

2013/5/16 Ernesto Reinaldo Barreiro <reier...@gmail.com>:
> Paul,
>
> Maybe you might want use "AJAX event" to "automatically"  add feedback to
> target.... So, that you can safely forget;-)
>
> Cheers,
>
> Ernesto
>
> On Thu, May 16, 2013 at 12:30 AM, Paul Bors <p...@bors.ws> wrote:
>
>> Nevermind that... I forogt to add the feedback panel to the target :)
>>
>> ~ Thank you,
>>    Paul Bors
>>
>>
>> On Wed, May 15, 2013 at 4:26 PM, Paul Bors <p...@bors.ws> wrote:
>>
>> > I'm a bit confused, how come if I call error() from inside by form button
>> > and then refresh the feedback panel via ajax my error is not showing up?
>> >
>> > I always end up having to drop the error in the user's session.
>> >
>> > ~ Thank you,
>> >    Paul Bors
>> >
>>
>
>
>
> --
> Regards - Ernesto Reinaldo Barreiro

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