| /* |
| * 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.myfaces.extensions.scripting.jsf.annotation; |
| |
| |
| import org.apache.myfaces.extensions.scripting.core.api.AnnotationScanListener; |
| import org.apache.myfaces.extensions.scripting.jsf.annotation.purged.PurgedRenderer; |
| |
| import javax.faces.FactoryFinder; |
| import javax.faces.context.FacesContext; |
| import javax.faces.render.FacesRenderer; |
| import javax.faces.render.RenderKit; |
| import javax.faces.render.RenderKitFactory; |
| import javax.faces.render.Renderer; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.logging.Level; |
| |
| /** |
| * @author Werner Punz (latest modification by $Author$) |
| * @version $Revision$ $Date$ |
| */ |
| |
| public class RendererImplementationListener extends MapEntityAnnotationScanner implements AnnotationScanListener |
| { |
| private static final String PAR_FAMILY = "componentFamily"; |
| private static final String PAR_RENDERERTYPE = "rendererType"; |
| private static final String PAR_RENDERKITID = "renderKitId"; |
| |
| Map<AnnotationEntry, String> _inverseIndex = new HashMap<AnnotationEntry, String>(); |
| |
| public RendererImplementationListener() { |
| super(PAR_FAMILY, PAR_RENDERERTYPE, PAR_RENDERKITID); |
| } |
| |
| class AnnotationEntry { |
| String componentFamily; |
| String rendererType; |
| String renderKitId; |
| |
| AnnotationEntry(String componentFamily, String rendererType, String renderKitId) { |
| this.componentFamily = componentFamily; |
| this.rendererType = rendererType; |
| this.renderKitId = renderKitId; |
| } |
| |
| public boolean equals(Object incoming) { |
| if (!(incoming instanceof AnnotationEntry)) { |
| return false; |
| } |
| AnnotationEntry toCompare = (AnnotationEntry) incoming; |
| //handle null cases |
| if ((componentFamily == null && toCompare.getComponentFamily() != null) || |
| (componentFamily != null && toCompare.getComponentFamily() == null) || |
| (rendererType == null && toCompare.getRendererType() != null) || |
| (rendererType != null && toCompare.getRendererType() == null) || |
| (renderKitId == null && toCompare.getRenderKitId() != null) || |
| (renderKitId != null && toCompare.getRenderKitId() == null)) { |
| |
| return false; |
| } else if (componentFamily == null && toCompare.getComponentFamily() == null && |
| rendererType == null && toCompare.getRendererType() == null && |
| renderKitId == null && toCompare.getRenderKitId() == null) { |
| return true; |
| } |
| |
| return componentFamily.equals(toCompare.getComponentFamily()) && |
| rendererType.equals(toCompare.getRendererType()) && |
| renderKitId.equals(toCompare.getRenderKitId()); |
| } |
| |
| @Override |
| public int hashCode() { |
| /*we calculate the hashcoide to avoid double entries*/ |
| return (((componentFamily != null) ? componentFamily : "") |
| + "_" + |
| ((rendererType != null) ? rendererType : "") |
| + "_" + |
| ((renderKitId != null) ? renderKitId : "") |
| |
| ).hashCode(); |
| } |
| |
| public String getComponentFamily() { |
| return componentFamily; |
| } |
| |
| public String getRendererType() { |
| return rendererType; |
| } |
| |
| public String getRenderKitId() { |
| return renderKitId; |
| } |
| } |
| |
| public boolean supportsAnnotation(String annotation) { |
| return annotation.equals(FacesRenderer.class.getName()); |
| } |
| |
| public boolean supportsAnnotation(Class annotation) { |
| return annotation.equals(FacesRenderer.class); |
| } |
| |
| @Override |
| protected void addEntity(Class clazz, Map<String, Object> params) { |
| String value = (String) params.get(PAR_FAMILY); |
| String theDefault = (String) params.get(PAR_RENDERERTYPE); |
| |
| String renderKitId = getRenderKitId(params); |
| RenderKit renderKit = getRenderkit(renderKitId); |
| |
| AnnotationEntry entry = new AnnotationEntry(value, theDefault, renderKitId); |
| _inverseIndex.put(entry, clazz.getName()); |
| _alreadyRegistered.put(clazz.getName(), entry); |
| |
| if (_log.isLoggable(Level.FINEST)) { |
| _log.log(Level.FINEST, "addRenderer(" + renderKitId + ", " |
| + entry.getComponentFamily() + ", " + entry.getRendererType() |
| + ", " + clazz.getName() + ")"); |
| } |
| |
| try { |
| renderKit.addRenderer(entry.getComponentFamily(), entry.getRendererType(), (Renderer) clazz.newInstance()); |
| } catch (InstantiationException e) { |
| _log.log(Level.SEVERE, "", e); |
| } catch (IllegalAccessException e) { |
| _log.log(Level.SEVERE, "", e); |
| } |
| } |
| |
| private RenderKitFactory getRenderKitFactory() { |
| return (RenderKitFactory) FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY); |
| } |
| |
| @Override |
| protected boolean hasToReregister(Map params, Class clazz) { |
| String value = (String) params.get(PAR_FAMILY); |
| String theDefault = (String) params.get(PAR_RENDERERTYPE); |
| String renderKitId = (String) params.get(PAR_RENDERKITID); |
| |
| AnnotationEntry entry = new AnnotationEntry(value, theDefault, renderKitId); |
| |
| AnnotationEntry alreadyRegistered = (AnnotationEntry) _alreadyRegistered.get(clazz.getName()); |
| if (alreadyRegistered == null) { |
| return true; |
| } |
| //here the check if the new class is the same as the old one |
| return alreadyRegistered.equals(entry); |
| } |
| |
| private String getRenderKitId(Map<String, Object> params) { |
| String renderKitId = (String) params.get(PAR_RENDERKITID); |
| renderKitId = (renderKitId == null) ? getApplication().getDefaultRenderKitId() : renderKitId; |
| return renderKitId; |
| } |
| |
| private RenderKit getRenderkit(String renderKitId) { |
| RenderKitFactory factory = getRenderKitFactory(); |
| RenderKit renderKit = factory.getRenderKit(FacesContext.getCurrentInstance(), renderKitId); |
| return renderKit; |
| } |
| |
| @Override |
| public void purge(String className) { |
| super.purge(className); |
| AnnotationEntry entry = (AnnotationEntry) _alreadyRegistered.remove(className); |
| if (entry == null) { |
| return; |
| } |
| |
| RenderKit renderKit = getRenderkit(entry.getRenderKitId()); |
| try { |
| //by fetching the changed renderer we save a full rescan |
| String rendererClass = _inverseIndex.get(entry); |
| if (rendererClass != null && rendererClass.equals(className)) { |
| _inverseIndex.put(entry, PurgedRenderer.class.getName()); |
| renderKit.addRenderer(entry.getComponentFamily(), entry.getRendererType(), PurgedRenderer.class.newInstance()); |
| } |
| } catch (InstantiationException e) { |
| _log.log(Level.SEVERE, "", e); |
| } catch (IllegalAccessException e) { |
| _log.log(Level.SEVERE, "", e); |
| } |
| } |
| } |