Examples of org.apache.wicket.behavior.Behavior

org.apache.wicket.behavior.Behavior
Behaviors are kind of plug-ins for Components. They allow functionality 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 which 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.
You also cannot modify a components model with a behavior.
@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)

   * @return form component for chaining
   */
  public final FormComponent<T> remove(final IValidator<? super T> validator)
  {
    Args.notNull(validator, "validator");
    Behavior match = null;
    for (Behavior behavior : getBehaviors())
    {
      if (behavior.equals(validator))
      {
        match = behavior;

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          {
            invokeMethod(target, curSubscription, component);
          }
          else
          {
            Behavior behavior = component.getBehaviorById(behaviorIndex);
            invokeMethod(target, curSubscription, behavior);
          }
        }
        else
        {

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   * @return form component for chaining
   */
  public final FormComponent<T> remove(final IValidator<? super T> validator)
  {
    Args.notNull(validator, "validator");
    Behavior match = null;
    for (Behavior behavior : getBehaviors())
    {
      if (behavior.equals(validator))
      {
        match = behavior;

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


      // Apply behavior modifiers
      List<? extends Behavior> behaviors = getBehaviors();
      if ((behaviors != null) && !behaviors.isEmpty() && !tag.isClose() &&
        (isIgnoreAttributeModifier() == false))
      {
        tag = tag.mutable();
        for (Behavior behavior : behaviors)
        {
          // Components may reject some behavior components
          if (isBehaviorAccepted(behavior))
          {
            behavior.onComponentTag(this, tag);
          }
        }
      }


      if ((tag instanceof WicketTag) && !tag.isClose() &&

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   * @return form component for chaining
   */
  public final FormComponent<T> remove(final IValidator<? super T> validator)
  {
    Args.notNull(validator, "validator");
    Behavior match = null;
    for (Behavior behavior : getBehaviors())
    {
      if (behavior.equals(validator))
      {
        match = behavior;

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   */
  public void remove(final IFormValidator validator)
  {
    Args.notNull(validator, "validator");


    Behavior match = null;
    for (Behavior behavior : getBehaviors())
    {
      if (behavior.equals(validator))
      {
        match = behavior;

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    }
    else
    {
      try
      {
        Behavior behavior = getComponent().getBehaviorById(behaviorId);
        listenerInterface.invoke(getComponent(), behavior);
      }
      catch (IndexOutOfBoundsException e)
      {
        throw new WicketRuntimeException("Couldn't find component behavior.", e);

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   * @param fc
   *            form component
   */
  public final void enableFocusTracking(final FormComponent<?> fc)
  {
    fc.add(new Behavior()
    {
      private static final long serialVersionUID = 1L;


      @Override
      public void onComponentTag(final Component component, final ComponentTag tag)

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    Component nodeComponent = newNodeComponent(NODE_COMPONENT_ID,
      (IModel<Object>)item.getDefaultModel());
    item.add(nodeComponent);


    // add behavior that conditionally adds the "selected" CSS class name
    item.add(new Behavior()
    {
      private static final long serialVersionUID = 1L;


      @Override
      public void onComponentTag(Component component, ComponentTag tag)

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          }
          onJunctionLinkClicked(target, node);
          updateTree(target);
        }
      });
      junctionLink.add(new Behavior()
      {
        private static final long serialVersionUID = 1L;


        @Override
        public void onComponentTag(Component component, ComponentTag tag)

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