001/* 002 * Copyright 2014 Anyware Services 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 */ 016package org.ametys.web.tags.observers; 017 018import java.util.Map; 019 020import org.apache.avalon.framework.context.Context; 021import org.apache.avalon.framework.context.ContextException; 022import org.apache.avalon.framework.context.Contextualizable; 023import org.apache.avalon.framework.logger.AbstractLogEnabled; 024import org.apache.avalon.framework.service.ServiceException; 025import org.apache.avalon.framework.service.ServiceManager; 026import org.apache.avalon.framework.service.Serviceable; 027import org.apache.cocoon.components.ContextHelper; 028import org.apache.cocoon.environment.Request; 029 030import org.ametys.core.observation.Event; 031import org.ametys.core.observation.Observer; 032import org.ametys.web.ObservationConstants; 033import org.ametys.web.repository.site.Site; 034import org.ametys.web.site.SiteConfigurationExtensionPoint; 035 036/** 037 * Memorizes previous value of the autoposting site parameter to be able to compare it later. 038 */ 039public class TagAutopostingSiteParameterObserverPart1 extends AbstractLogEnabled implements Observer, Contextualizable, Serviceable 040{ 041 /** Site autoposting request attribute name */ 042 public static final String SITE_TAGS_AUTOPOSTING_REQUEST_ATTR = "site.updating.autoposting.old.value"; 043 044 /** The avalon context */ 045 protected Context _context; 046 047 /** The site configuration EP */ 048 protected SiteConfigurationExtensionPoint _scep; 049 050 @Override 051 public void contextualize(Context context) throws ContextException 052 { 053 _context = context; 054 } 055 056 @Override 057 public void service(ServiceManager manager) throws ServiceException 058 { 059 _scep = (SiteConfigurationExtensionPoint) manager.lookup(SiteConfigurationExtensionPoint.ROLE); 060 } 061 062 @Override 063 public boolean supports(Event event) 064 { 065 return event.getId().equals(ObservationConstants.EVENT_SITE_UPDATING); 066 } 067 068 @Override 069 public int getPriority(Event event) 070 { 071 return MAX_PRIORITY + 3000; 072 } 073 074 public void observe(Event event, Map<String, Object> transientVars) throws Exception 075 { 076 Site site = (Site) event.getArguments().get(ObservationConstants.ARGS_SITE); 077 Boolean autoposting = _scep.getValueAsBoolean(site.getName(), "tags-autoposting"); 078 079 // Saving previous "autoposting" parameter value as a request attribute. 080 Request request = ContextHelper.getRequest(_context); 081 request.setAttribute(SITE_TAGS_AUTOPOSTING_REQUEST_ATTR, autoposting); 082 083 } 084} 085