001/* 002 * (C) Copyright 2014 Nuxeo SA (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl-2.1.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Anahide Tchertchian 016 */ 017package org.nuxeo.ecm.platform.forms.layout.facelets; 018 019import javax.faces.context.FacesContext; 020import javax.faces.event.PhaseEvent; 021import javax.faces.event.PhaseId; 022import javax.faces.event.PhaseListener; 023 024/** 025 * Phase listener that empties the map of widget ids generated by the layout system to avoid duplicate when process of 026 * facelet handlers is done twice. 027 * <p> 028 * Process is done twice on ajax requests, when performing phase restore and then phase render response => empty the map 029 * before rendering response. 030 * 031 * @since 6.0 032 */ 033public class LayoutPhaseListener implements PhaseListener { 034 035 private static final long serialVersionUID = 1L; 036 037 @Override 038 public PhaseId getPhaseId() { 039 return PhaseId.RENDER_RESPONSE; 040 } 041 042 @Override 043 public void beforePhase(PhaseEvent event) { 044 FacesContext context = event.getFacesContext(); 045 NuxeoLayoutIdManagerBean bean = lookupIdBean(context); 046 bean.resetIds(); 047 } 048 049 protected static NuxeoLayoutIdManagerBean lookupIdBean(FacesContext ctx) { 050 String expr = "#{" + NuxeoLayoutIdManagerBean.NAME + "}"; 051 NuxeoLayoutIdManagerBean bean = (NuxeoLayoutIdManagerBean) ctx.getApplication().evaluateExpressionGet(ctx, 052 expr, Object.class); 053 if (bean == null) { 054 throw new RuntimeException("Managed bean not found: " + expr); 055 } 056 return bean; 057 } 058 059 @Override 060 public void afterPhase(PhaseEvent event) { 061 } 062 063}