Examples of org.apache.wicket.ajax.markup.html.AjaxFallbackLink

Package org.apache.wicket.ajax.markup.html

Examples of org.apache.wicket.ajax.markup.html.AjaxFallbackLink

org.apache.wicket.ajax.markup.html.AjaxFallbackLink
An ajax link that will degrade to a normal request if ajax is not available or javascript is disabled.
If JavaScript is enabled then the registered JavaScript event 'click' handler will be used, otherwise the 'href' attribute if the markup element is an <a>, <area> or <link>. AjaxFallbackLink doesn't fallback if the markup element is none of the three above.
@since 1.2 @author Igor Vaynberg (ivaynberg) @param < T> type of model object

  public void testAjaxFallbackLinkClick()
  {
    final Page page = new MockPageWithLink();


    // Create a link, which we test is actually invoked
    page.add(new AjaxFallbackLink("ajaxLink")
    {
      private static final long serialVersionUID = 1L;


      public void onClick(AjaxRequestTarget target)
      {

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  public void testFallbackLinkWithAjaxDisabled()
  {
    final Page page = new MockPageWithLink();


    // Create a link, which we test is actually invoked
    page.add(new AjaxFallbackLink("ajaxLink")
    {
      private static final long serialVersionUID = 1L;


      public void onClick(AjaxRequestTarget target)
      {

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  {
    // add the listview container for the todo items.
    showItems = new TodoItemsContainer("showItems");
    add(showItems);


    add(new AjaxFallbackLink("ajaxback")
    {
      /**
       * @see org.apache.wicket.ajax.markup.html.AjaxFallbackLink#onClick(org.apache.wicket.ajax.AjaxRequestTarget)
       */
      public void onClick(AjaxRequestTarget target)

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        }
      };
    }
    else
    {
      return new AjaxFallbackLink(id)
      {
        private static final long serialVersionUID = 1L;


        /**
         * @see org.apache.wicket.ajax.markup.html.AjaxFallbackLink#onClick(org.apache.wicket.ajax.AjaxRequestTarget)

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    // AjaxFallbackLinks is processed like an AjaxLink if isAjax is true
    // If it's not handling of the linkComponent is passed through to the
    // Link.
    else if (linkComponent instanceof AjaxFallbackLink && isAjax)
    {
      AjaxFallbackLink link = (AjaxFallbackLink)linkComponent;


      setupRequestAndResponse();
      RequestCycle requestCycle = createRequestCycle();
      AjaxRequestTarget target = new AjaxRequestTarget(link.getPage());
      requestCycle.setRequestTarget(target);


      link.onClick(target);


      // process the request target
      target.respond(requestCycle);
    }
    // if the link is an AjaxSubmitLink, we need to find the form
    // from it using reflection so we know what to submit.
    else if (linkComponent instanceof AjaxSubmitLink)
    {
      // If it's not ajax we fail
      if (isAjax == false)
      {
        fail("Link " + path + "is an AjaxSubmitLink and " +
            "will not be invoked when AJAX (javascript) is disabled.");
      }


      AjaxSubmitLink link = (AjaxSubmitLink)linkComponent;


      // We cycle through the attached behaviors and select the
      // LAST matching behavior as the one we handle.
      List behaviors = link.getBehaviors();
      AjaxFormSubmitBehavior ajaxFormSubmitBehavior = null;
      for (Iterator iter = behaviors.iterator(); iter.hasNext();)
      {
        Object behavior = iter.next();
        if (behavior instanceof AjaxFormSubmitBehavior)

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    setVersioned(false);
  }


  protected WebMarkupContainer newLink(String linkId, final int index)
  {
    return new AjaxFallbackLink(linkId)
    {


      private static final long serialVersionUID = 1L;


      public void onClick(AjaxRequestTarget target)

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        }
      };
    }
    else
    {
      return new AjaxFallbackLink(id)
      {
        private static final long serialVersionUID = 1L;


        /**
         * @see org.apache.wicket.ajax.markup.html.AjaxFallbackLink#onClick(org.apache.wicket.ajax.AjaxRequestTarget)

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    protected void populateItem(LoopItem item)
    {
      // Use an AjaxFallbackLink for rating to make voting work even
      // without Ajax.
      AjaxFallbackLink link = new AjaxFallbackLink("link")
      {
        private static final long serialVersionUID = 1L;


        public void onClick(AjaxRequestTarget target)
        {
          LoopItem item = (LoopItem)getParent();


          // adjust the rating, and provide the target to the subclass
          // of our rating component, so other components can also get
          // updated in case of an AJAX event.


          onRated(item.getIteration() + 1, target);


          // if we process an AJAX event, update this panel
          if (target != null)
          {
            target.addComponent(RatingPanel.this.get("rater"));
          }
        }


        public boolean isEnabled()
        {
          return !((Boolean)hasVoted.getObject()).booleanValue();
        }
      };


      int iteration = item.getIteration();


      // add the star image, which is either active (highlighted) or
      // inactive (no star)
      link.add(new WebMarkupContainer("star").add(new SimpleAttributeModifier("src",
          (onIsStarActive(iteration)
              ? getActiveStarUrl(iteration)
              : getInactiveStarUrl(iteration)))));
      item.add(link);
    }

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                // odd/even alternate style
                item.add(new SimpleAttributeModifier("class",
                        item.getIndex() % 2 == 0 ? "even" : "odd"));
                
                // navigation/selection links
                AjaxFallbackLink link = new IndicatingAjaxFallbackLink("nameLink") {


                    @Override
                    public void onClick(AjaxRequestTarget target) {
                        linkNameClicked((File) item.getModelObject(), target);
                    }
                    
                };
                link.add(new Label("name", item.getModel()) {
                    @Override
                    public IConverter getConverter(Class type) {
                        return FILE_NAME_CONVERTER;
                    }
                });

View Full Code Here

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