001/*
002 * (C) Copyright 2010 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 *     Thierry Delprat
018 */
019package org.nuxeo.ecm.webapp.tree;
020
021import java.io.IOException;
022import java.io.Serializable;
023
024import javax.faces.context.FacesContext;
025import javax.servlet.http.HttpServletResponse;
026
027import org.jboss.seam.annotations.Install;
028import org.jboss.seam.annotations.Name;
029import org.jboss.seam.annotations.Scope;
030
031import static org.jboss.seam.ScopeType.SESSION;
032
033@Name("treeInvalidator")
034@Scope(SESSION)
035@Install(precedence = Install.FRAMEWORK)
036public class TreeInvalidatorBean implements Serializable {
037
038    private static final long serialVersionUID = 1L;
039
040    protected boolean needsInvalidation = false;
041
042    public String forceTreeRefresh() throws IOException {
043
044        needsInvalidation = true;
045
046        FacesContext context = FacesContext.getCurrentInstance();
047        HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();
048        response.setContentType("application/xml; charset=UTF-8");
049        response.getWriter().write("<response>OK</response>");
050        context.responseComplete();
051
052        return null;
053    }
054
055    public boolean needsInvalidation() {
056        return needsInvalidation;
057    }
058
059    public void invalidationDone() {
060        needsInvalidation = false;
061    }
062
063}