001//
002// Copyright 2010 GOT5 (Gang Of Tapestry 5)
003//
004// Licensed under the Apache License, Version 2.0 (the "License");
005// you may not use this file except in compliance with the License.
006// You may obtain a copy of the License at
007//
008//      http://www.apache.org/licenses/LICENSE-2.0
009//
010// Unless required by applicable law or agreed to in writing, software
011// distributed under the License is distributed on an "AS IS" BASIS,
012// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013// See the License for the specific language governing permissions and
014// limitations under the License.
015//
016
017package org.apache.tapestry5.beanvalidator;
018
019import org.apache.tapestry5.annotations.SetupRender;
020import org.apache.tapestry5.corelib.components.Form;
021import org.apache.tapestry5.corelib.components.FormFragment;
022import org.apache.tapestry5.model.MutableComponentModel;
023import org.apache.tapestry5.plastic.MethodAdvice;
024import org.apache.tapestry5.plastic.MethodInvocation;
025import org.apache.tapestry5.plastic.PlasticClass;
026import org.apache.tapestry5.plastic.PlasticMethod;
027import org.apache.tapestry5.services.TransformConstants;
028import org.apache.tapestry5.services.javascript.JavaScriptSupport;
029import org.apache.tapestry5.services.transform.ComponentClassTransformWorker2;
030import org.apache.tapestry5.services.transform.TransformationSupport;
031
032/**
033 * Respectfully borrowed from the tapestry5-jquery project
034 * https://github.com/got5/tapestry5-jquery/blob/master/src/main/java/org/got5/tapestry5/jquery/services/FormResourcesInclusionWorker.java
035 */
036public class FormResourcesInclusionWorker implements ComponentClassTransformWorker2
037{
038    private final JavaScriptSupport javaScriptSupport;
039
040    public FormResourcesInclusionWorker(JavaScriptSupport javaScriptSupport)
041    {
042        this.javaScriptSupport = javaScriptSupport;
043    }
044
045    public void transform(PlasticClass plasticClass, TransformationSupport support, MutableComponentModel model)
046    {
047        if (model.getComponentClassName().equals(Form.class.getName()) ||
048                model.getComponentClassName().equals(FormFragment.class.getName()))
049        {
050            PlasticMethod setupRender = plasticClass.introduceMethod(TransformConstants.SETUP_RENDER_DESCRIPTION);
051
052            setupRender.addAdvice(new MethodAdvice()
053            {
054                public void advise(MethodInvocation invocation)
055                {
056                    javaScriptSupport.importStack(BeanValidatorStack.STACK_ID);
057
058                    invocation.proceed();
059                }
060            });
061
062            model.addRenderPhase(SetupRender.class);
063        }
064    }
065}