Examples of org.apache.wicket.behavior.IBehavior

org.apache.wicket.behavior.IBehavior
Behaviors are kind of plug-ins for Components. They allow to be added to a component and get essential events forwarded by the component. they can be bound to a concrete component (using the bind method is called when the behavior is attached), but they don't need to. They can modify the components markup by changing the rendered ComponentTag. Behaviors can have their own models as well, and they are notified when these are to be detached by the component.
It is recommended that you extend from {@link org.apache.wicket.behavior.AbstractBehavior}instead of directly implementing this interface.
@see org.apache.wicket.behavior.IBehaviorListener @see org.apache.wicket.markup.html.IHeaderContributor @see org.apache.wicket.behavior.AbstractAjaxBehavior @see org.apache.wicket.AttributeModifier @author Ralf Ebert @author Eelco Hillenius @author Igor Vaynberg (ivaynberg)

      if (tag.hasBehaviors())
      {
        Iterator<? extends IBehavior> tagBehaviors = tag.getBehaviors();
        while (tagBehaviors.hasNext())
        {
          final IBehavior behavior = tagBehaviors.next();
          if (behavior.isEnabled(this))
          {
            behavior.onComponentTag(this, tag);
          }
          behavior.detach(this);
        }
      }


      // Write the tag
      tag.writeOutput(getResponse(), stripWicketTags, findMarkupStream().getWicketNamespace());

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      if (tag.hasBehaviors())
      {
        Iterator<? extends IBehavior> tagBehaviors = tag.getBehaviors();
        while (tagBehaviors.hasNext())
        {
          final IBehavior behavior = tagBehaviors.next();
          if (behavior.isEnabled(this))
          {
            behavior.onComponentTag(this, tag);
          }
          behavior.detach(this);
        }
      }


      // Write the tag
      tag.writeOutput(getResponse(), stripWicketTags, findMarkupStream().getWicketNamespace());

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    final List<IBehavior> behaviors = component.getBehaviorsRawList();
    IBehaviorListener behaviorListener = null;


    if (behaviors.size() > idAsInt)
    {
      IBehavior behavior = behaviors.get(idAsInt);
      if (behavior instanceof IBehaviorListener)
      {
        behaviorListener = (IBehaviorListener)behavior;
      }
    }

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    // matches the event parameter.
    AjaxEventBehavior ajaxEventBehavior = null;
    List behaviors = component.getBehaviors();
    for (Iterator iter = behaviors.iterator(); iter.hasNext();)
    {
      IBehavior behavior = (IBehavior)iter.next();


      // AjaxEventBehavior is the one to look for
      if (behavior instanceof AjaxEventBehavior)
      {
        AjaxEventBehavior tmp = (AjaxEventBehavior)behavior;

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      if (tag.hasBehaviors())
      {
        Iterator<? extends IBehavior> tagBehaviors = tag.getBehaviors();
        while (tagBehaviors.hasNext())
        {
          final IBehavior behavior = tagBehaviors.next();
          if (behavior.isEnabled(this))
          {
            behavior.onComponentTag(this, tag);
          }
          behavior.detach(this);
        }
      }


      // Write the tag
      tag.writeOutput(getResponse(), !needToRenderTag(null),

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    }
    else
    {
      try
      {
        IBehavior behavior = getComponent().getBehaviors().get(behaviorIndex);
        listenerInterface.invoke(getComponent(), behavior);
      }
      catch (IndexOutOfBoundsException e)
      {
        throw new WicketRuntimeException("Couldn't find component behavior.");

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              // go through the behaviors and invoke IBehavior.afterRender
              List behaviors = item.getBehaviors();
              for (Iterator i = behaviors.iterator(); i.hasNext();)
              {
                IBehavior behavior = (IBehavior)i.next();
                behavior.afterRender(item);
              }
            }
          });
          //
        }

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    List behaviors = getBehaviors();
    if (behaviors != null)
    {
      for (Iterator i = behaviors.iterator(); i.hasNext();)
      {
        IBehavior behavior = (IBehavior)i.next();


        // Always detach models, 'accepted' or not. Otherwise, if they
        // are accepted during render, but not here - something can go
        // undetached, and calling isEnabled can also lead to nasty side
        // effects. See for instance Timo's comment on
        // http://issues.apache.org/jira/browse/WICKET-673
        behavior.detach(this);


        if (behavior.isTemporary())
        {
          removeBehavior(behavior);
        }
      }
    }

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    final Iterator behaviors = getBehaviors().iterator();


    while (behaviors.hasNext())
    {
      IBehavior behavior = (IBehavior)behaviors.next();
      if (!behavior.getStatelessHint(this))
      {
        return false;
      }
    }
    return true;

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        List behaviors = getBehaviors();
        if (behaviors != null)
        {
          for (Iterator i = behaviors.iterator(); i.hasNext();)
          {
            IBehavior behavior = (IBehavior)i.next();
            if (isBehaviorAccepted(behavior))
            {
              try
              {
                behavior.exception(this, ex);
              }
              catch (Throwable ex2)
              {
                log.error("Error while cleaning up after exception", ex2);
              }

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