Java tutorial
/* * (C) Copyright 2006-2008 Nuxeo SA (http://nuxeo.com/) and others. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Contributors: * <a href="mailto:at@nuxeo.com">Anahide Tchertchian</a> * * $Id: $ */ package org.nuxeo.ecm.directory.ui; import java.util.ArrayList; import java.util.Collections; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.nuxeo.ecm.directory.api.ui.DirectoryUI; import org.nuxeo.ecm.directory.api.ui.DirectoryUIDescriptor; import org.nuxeo.ecm.directory.api.ui.DirectoryUIManager; import org.nuxeo.runtime.model.ComponentContext; import org.nuxeo.runtime.model.ComponentInstance; import org.nuxeo.runtime.model.DefaultComponent; /** * Component managing directory ui information * * @author Anahide Tchertchian */ public class DirectoryUIManagerImpl extends DefaultComponent implements DirectoryUIManager { private static final long serialVersionUID = 1L; private static final Log log = LogFactory.getLog(DirectoryUIManagerImpl.class); protected static final String DIRECTORIES_EP_NAME = "directories"; protected Map<String, DirectoryUI> registry; @Override @SuppressWarnings("unchecked") public <T> T getAdapter(Class<T> adapter) { if (adapter.isAssignableFrom(DirectoryUIManager.class)) { return (T) this; } return null; } @Override public void activate(ComponentContext context) { super.activate(context); registry = new LinkedHashMap<String, DirectoryUI>(); } @Override public void deactivate(ComponentContext context) { registry = null; super.deactivate(context); } @Override public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { if (!extensionPoint.equals(DIRECTORIES_EP_NAME)) { log.warn("Unknown extension point: " + extensionPoint); return; } DirectoryUIDescriptor desc = (DirectoryUIDescriptor) contribution; String name = desc.getName(); boolean disabled = Boolean.FALSE.equals(desc.isEnabled()); if (registry.containsKey(name)) { log.info("Overriding " + name); } if (disabled) { registry.remove(name); } else { registry.put(name, desc); } } @Override public void unregisterContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { if (!extensionPoint.equals(DIRECTORIES_EP_NAME)) { log.warn("Unknown extension point: " + extensionPoint); return; } DirectoryUIDescriptor desc = (DirectoryUIDescriptor) contribution; registry.remove(desc.getName()); } public DirectoryUI getDirectoryInfo(String directoryName) { return registry.get(directoryName); } public List<String> getDirectoryNames() { List<String> dirNames = new ArrayList<String>(registry.keySet()); Collections.sort(dirNames, String.CASE_INSENSITIVE_ORDER); return dirNames; } }