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.cocoon.components.ContextHelper; 025import org.apache.cocoon.environment.Request; 026 027import org.ametys.core.observation.Event; 028import org.ametys.core.observation.Observer; 029import org.ametys.web.ObservationConstants; 030import org.ametys.web.repository.site.Site; 031 032/** 033 * Memorizes previous value of the autoposting site parameter to be able to compare it later. 034 */ 035public class TagAutopostingSiteParameterObserverPart1 extends AbstractLogEnabled implements Observer, Contextualizable 036{ 037 /** Site autoposting request attribute name */ 038 public static final String SITE_TAGS_AUTOPOSTING_REQUEST_ATTR = "site.updating.autoposting.old.value"; 039 040 /** The avalon context */ 041 protected Context _context; 042 043 @Override 044 public void contextualize(Context context) throws ContextException 045 { 046 _context = context; 047 } 048 049 @Override 050 public boolean supports(Event event) 051 { 052 return event.getId().equals(ObservationConstants.EVENT_SITE_UPDATING); 053 } 054 055 @Override 056 public int getPriority(Event event) 057 { 058 return MAX_PRIORITY + 3000; 059 } 060 061 public void observe(Event event, Map<String, Object> transientVars) throws Exception 062 { 063 Site site = (Site) event.getArguments().get(ObservationConstants.ARGS_SITE); 064 Boolean autoposting = site.getValue("tags-autoposting"); 065 066 // Saving previous "autoposting" parameter value as a request attribute. 067 Request request = ContextHelper.getRequest(_context); 068 request.setAttribute(SITE_TAGS_AUTOPOSTING_REQUEST_ATTR, autoposting); 069 070 } 071} 072