001/* 002 * (C) Copyright 2006-2008 Nuxeo SAS (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.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 * Alexandre Russel 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.ecm.platform.annotations.gwt.client.model; 021 022import java.util.ArrayList; 023import java.util.Collections; 024import java.util.Comparator; 025import java.util.List; 026 027import org.nuxeo.ecm.platform.annotations.gwt.client.configuration.AnnotationFilter; 028import org.nuxeo.ecm.platform.annotations.gwt.client.model.AnnotationChangeListener.ChangeEvent; 029 030import com.google.gwt.core.client.GWT; 031 032/** 033 * @author Alexandre Russel 034 */ 035public class AnnotationModel implements AnnotationChangeNotifier { 036 037 private static final Comparator<Annotation> ANNOTATION_DATE_COMPARATOR = new Comparator<Annotation>() { 038 public int compare(Annotation o1, Annotation o2) { 039 return o1.getDate().compareTo(o2.getDate()); 040 } 041 }; 042 043 private Annotation newAnnotation; 044 045 private List<Annotation> annotations = new ArrayList<Annotation>(); 046 047 private List<Annotation> filteredAnnotations; 048 049 private AnnotationFilter filter; 050 051 private List<AnnotationChangeListener> listeners = new ArrayList<AnnotationChangeListener>(); 052 053 public void addChangeListener(AnnotationChangeListener listener) { 054 listeners.add(listener); 055 } 056 057 public Annotation getNewAnnotation() { 058 return newAnnotation; 059 } 060 061 public void setNewAnnotation(Annotation newAnnotation) { 062 this.newAnnotation = newAnnotation; 063 notifyListener(ChangeEvent.annotation); 064 } 065 066 private void notifyListener(ChangeEvent ce) { 067 GWT.log("Notifying listener.", null); 068 for (AnnotationChangeListener listener : listeners) { 069 listener.onChange(this, ce); 070 } 071 } 072 073 public List<Annotation> getAnnotations() { 074 if (filteredAnnotations != null) { 075 return filteredAnnotations; 076 } else { 077 return annotations; 078 } 079 } 080 081 public List<Annotation> getUnfilteredAnnotations() { 082 return annotations; 083 } 084 085 public void setAnnotations(List<Annotation> annotations) { 086 Collections.sort(annotations, ANNOTATION_DATE_COMPARATOR); 087 this.annotations = annotations; 088 089 int id = 0; 090 for (Annotation annotation : annotations) { 091 annotation.setId(id++); 092 } 093 094 if (filter != null) { 095 filteredAnnotations = filterAnnotations(filter); 096 } 097 notifyListener(ChangeEvent.annotationList); 098 } 099 100 public List<Annotation> filterAnnotations(AnnotationFilter filter) { 101 List<Annotation> filteredAnnotations = new ArrayList<Annotation>(); 102 for (Annotation annotation : annotations) { 103 if (filter.accept(annotation)) { 104 filteredAnnotations.add(annotation); 105 } 106 } 107 return filteredAnnotations; 108 } 109 110 public void setFilter(AnnotationFilter filter) { 111 this.filter = filter; 112 filteredAnnotations = filterAnnotations(filter); 113 notifyListener(ChangeEvent.annotationList); 114 } 115 116 public AnnotationFilter getFilter() { 117 return filter; 118 } 119}