001/* 002 * (C) Copyright 2014 Nuxeo SA (http://nuxeo.com/) and others. 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 * Contributors: 017 * Anahide Tchertchian 018 */ 019package org.nuxeo.ecm.platform.forms.layout.facelets; 020 021import javax.faces.context.FacesContext; 022import javax.faces.event.PhaseEvent; 023import javax.faces.event.PhaseId; 024import javax.faces.event.PhaseListener; 025 026/** 027 * Phase listener that empties the map of widget ids generated by the layout system to avoid duplicate when process of 028 * facelet handlers is done twice. 029 * <p> 030 * Process is done twice on ajax requests, when performing phase restore and then phase render response => empty the map 031 * before rendering response. 032 * 033 * @since 6.0 034 */ 035public class LayoutPhaseListener implements PhaseListener { 036 037 private static final long serialVersionUID = 1L; 038 039 @Override 040 public PhaseId getPhaseId() { 041 return PhaseId.RENDER_RESPONSE; 042 } 043 044 @Override 045 public void beforePhase(PhaseEvent event) { 046 FacesContext context = event.getFacesContext(); 047 NuxeoLayoutIdManagerBean bean = lookupIdBean(context); 048 bean.resetIds(); 049 } 050 051 protected static NuxeoLayoutIdManagerBean lookupIdBean(FacesContext ctx) { 052 String expr = "#{" + NuxeoLayoutIdManagerBean.NAME + "}"; 053 NuxeoLayoutIdManagerBean bean = (NuxeoLayoutIdManagerBean) ctx.getApplication().evaluateExpressionGet(ctx, 054 expr, Object.class); 055 if (bean == null) { 056 throw new RuntimeException("Managed bean not found: " + expr); 057 } 058 return bean; 059 } 060 061 @Override 062 public void afterPhase(PhaseEvent event) { 063 } 064 065}