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    
017    package org.apache.tapestry5.beanvalidator;
018    
019    import org.apache.tapestry5.annotations.SetupRender;
020    import org.apache.tapestry5.corelib.components.Form;
021    import org.apache.tapestry5.corelib.components.FormFragment;
022    import org.apache.tapestry5.model.MutableComponentModel;
023    import org.apache.tapestry5.plastic.MethodAdvice;
024    import org.apache.tapestry5.plastic.MethodInvocation;
025    import org.apache.tapestry5.plastic.PlasticClass;
026    import org.apache.tapestry5.plastic.PlasticMethod;
027    import org.apache.tapestry5.services.TransformConstants;
028    import org.apache.tapestry5.services.javascript.JavaScriptSupport;
029    import org.apache.tapestry5.services.transform.ComponentClassTransformWorker2;
030    import 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     */
036    public 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    }