/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.wicket.ajax.form;
import org.apache.wicket.Component;
import org.apache.wicket.WicketRuntimeException;
import org.apache.wicket.ajax.attributes.AjaxCallListener;
import org.apache.wicket.ajax.attributes.AjaxRequestAttributes;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.apache.wicket.markup.html.form.CheckBoxMultipleChoice;
import org.apache.wicket.markup.html.form.CheckGroup;
import org.apache.wicket.markup.html.form.FormComponent;
import org.apache.wicket.markup.html.form.RadioChoice;
import org.apache.wicket.markup.html.form.RadioGroup;
import org.apache.wicket.request.resource.JavaScriptResourceReference;
import org.apache.wicket.request.resource.ResourceReference;
/**
* This is a Ajax Component Update Behavior that is meant for choices/groups that are not one
* component in the html but many.
* <p>
* Use the normal {@link AjaxFormComponentUpdatingBehavior} for the normal single component fields
*
* @author jcompagner
* @author svenmeier
*
* @see org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior#onUpdate(org.apache.wicket.ajax.AjaxRequestTarget)
* @see org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior#onError(org.apache.wicket.ajax.AjaxRequestTarget, RuntimeException)
* @see RadioChoice
* @see CheckBoxMultipleChoice
* @see RadioGroup
* @see CheckGroup
*/
public abstract class AjaxFormChoiceComponentUpdatingBehavior extends
AjaxFormComponentUpdatingBehavior
{
private static final ResourceReference CHOICE_JS = new JavaScriptResourceReference(
AjaxFormChoiceComponentUpdatingBehavior.class, "AjaxFormChoiceComponentUpdatingBehavior.js");
private static final long serialVersionUID = 1L;
/**
* Construct.
*/
public AjaxFormChoiceComponentUpdatingBehavior()
{
super("click");
}
@Override
public void renderHead(Component component, IHeaderResponse response)
{
super.renderHead(component, response);
response.render(JavaScriptHeaderItem.forReference(CHOICE_JS));
}
@Override
protected void updateAjaxAttributes(AjaxRequestAttributes attributes)
{
super.updateAjaxAttributes(attributes);
attributes.getAjaxCallListeners().add(new AjaxCallListener()
{
private static final long serialVersionUID = 1L;
@Override
public CharSequence getPrecondition(Component component)
{
return String.format("return Wicket.Choice.acceptInput('%s', attrs)",
getFormComponent().getInputName());
}
});
attributes.getDynamicExtraParameters().add(
String.format("return Wicket.Choice.getInputValues('%s', attrs)",
getFormComponent().getInputName()));
}
/**
*
* @see org.apache.wicket.behavior.AbstractAjaxBehavior#onBind()
*/
@Override
protected void onBind()
{
super.onBind();
if (getComponent() instanceof RadioGroup || getComponent() instanceof CheckGroup)
{
getComponent().setRenderBodyOnly(false);
}
}
@Override
protected void checkComponent(FormComponent<?> component)
{
if (!AjaxFormChoiceComponentUpdatingBehavior.appliesTo(getComponent()))
{
throw new WicketRuntimeException("Behavior " + getClass().getName() +
" can only be added to an instance of a RadioChoice/CheckboxChoice/RadioGroup/CheckGroup");
}
}
/**
* @param component
* the component to check
* @return if the component applies to the {@link AjaxFormChoiceComponentUpdatingBehavior}
*/
static boolean appliesTo(Component component)
{
return (component instanceof RadioChoice) ||
(component instanceof CheckBoxMultipleChoice) || (component instanceof RadioGroup) ||
(component instanceof CheckGroup);
}
}