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)

    final Link<Void> addBehaviorLink = new Link<Void>("addBehaviorLink")
    {
      @Override
      public void onClick()
      {
        targetComponent.add(new Behavior()
        {


          /**
           * @see org.apache.wicket.behavior.AbstractBehavior#isTemporary(Component)
           */

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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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        add(password);
        add(confirmPasswordLabel);
        add(confirmPassword);


        final WebMarkupContainer mandatoryPassword = new WebMarkupContainer("mandatory_pwd");
        mandatoryPassword.add(new Behavior() {


            private static final long serialVersionUID = 1469628524240283489L;


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

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                            image = new Image("icon", "statuses/inactive.png");
                            alt = "failure icon";
                            title = "failure";
                    }


                    image.add(new Behavior() {


                        private static final long serialVersionUID = 1469628524240283489L;


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

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                        ? attr.getValues().toString()
                        : attr.getValues().get(0);
            }
        }


        Component label = new Label("value", value).add(new Behavior() {


            private static final long serialVersionUID = 1469628524240283489L;


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

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        final Fragment frag;
        if (image == null) {
            frag = new Fragment(id, "emptyFrag", this);
        } else {
            image.add(new Behavior() {


                private static final long serialVersionUID = 1469628524240283489L;


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

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                        image = new Image("icon", "../statuses/inactive.png");
                        alt = "inactive icon";
                        title = "Disabled";
                }


                image.add(new Behavior() {


                    private static final long serialVersionUID = 1469628524240283489L;


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

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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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    Form<Void> form = new Form<Void>("form");
    add(form);


    tree = createTree(provider, new FooExpansionModel());
    tree.add(new Behavior()
    {
      private static final long serialVersionUID = 1L;


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

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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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