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 * bstefanescu 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.ecm.webengine.model.impl; 021 022import java.util.ArrayList; 023import java.util.List; 024import java.util.Vector; 025 026/** 027 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 028 */ 029public class TypeConfigurationProvider { 030 031 protected final List<TypeDescriptor> types; 032 033 protected final List<AdapterDescriptor> services; 034 035 protected final List<TypeRegistry> registries; 036 037 public TypeConfigurationProvider() { 038 types = new ArrayList<TypeDescriptor>(); 039 services = new ArrayList<AdapterDescriptor>(); 040 registries = new Vector<TypeRegistry>(); 041 } 042 043 public void flushCache() { 044 // do nothing 045 } 046 047 public synchronized boolean isEmpty() { 048 return types.isEmpty() && services.isEmpty(); 049 } 050 051 public synchronized void registerType(TypeDescriptor td) { 052 types.add(td); 053 fireTypeRegistered(td); 054 } 055 056 public synchronized void unregisterType(TypeDescriptor td) { 057 if (types.remove(td)) { 058 fireTypeUnregistered(td); 059 } 060 } 061 062 public synchronized void registerAction(AdapterDescriptor ad) { 063 services.add(ad); 064 fireServiceRegistered(ad); 065 } 066 067 public synchronized void unregisterAction(AdapterDescriptor ad) { 068 if (services.remove(ad)) { 069 fireServiceUnregistered(ad); 070 } 071 } 072 073 public void addRegistry(TypeRegistry registry) { 074 registries.add(registry); 075 } 076 077 public void removeRegistry(TypeRegistry listener) { 078 registries.remove(listener); 079 } 080 081 public synchronized void install(TypeRegistry registry) { 082 for (TypeDescriptor td : types) { 083 registry.registerType(td); 084 } 085 for (AdapterDescriptor ad : services) { 086 registry.registerAdapter(ad); 087 } 088 addRegistry(registry); 089 } 090 091 protected void fireServiceRegistered(AdapterDescriptor ad) { 092 if (registries.isEmpty()) { 093 return; 094 } 095 for (TypeRegistry reg : registries.toArray(new TypeRegistry[registries.size()])) { 096 reg.registerAdapter(ad); 097 } 098 } 099 100 protected void fireServiceUnregistered(AdapterDescriptor ad) { 101 if (registries.isEmpty()) { 102 return; 103 } 104 for (TypeRegistry reg : registries.toArray(new TypeRegistry[registries.size()])) { 105 reg.unregisterAdapter(ad); 106 } 107 } 108 109 protected void fireTypeRegistered(TypeDescriptor td) { 110 if (registries.isEmpty()) { 111 return; 112 } 113 for (TypeRegistry listener : registries.toArray(new TypeRegistry[registries.size()])) { 114 listener.registerType(td); 115 } 116 } 117 118 protected void fireTypeUnregistered(TypeDescriptor td) { 119 if (registries.isEmpty()) { 120 return; 121 } 122 for (TypeRegistry listener : registries.toArray(new TypeRegistry[registries.size()])) { 123 listener.unregisterType(td); 124 } 125 } 126 127}