| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.netbeans.modules.editor.mimelookup.impl; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Method; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import org.netbeans.api.editor.mimelookup.MimePath; |
| import org.netbeans.spi.editor.mimelookup.InstanceProvider; |
| import org.netbeans.spi.editor.mimelookup.MimeLocation; |
| import org.openide.util.Exceptions; |
| import org.openide.util.Lookup; |
| |
| /** |
| * |
| * @author vita |
| */ |
| public class SwitchLookup extends Lookup { |
| |
| private static final Logger LOG = Logger.getLogger(SwitchLookup.class.getName()); |
| |
| /* package */ static final String ROOT_FOLDER = "Editors"; //NOI18N |
| |
| private MimePath mimePath; |
| |
| private final String LOCK = new String("SwitchLookup.LOCK"); //NOI18N |
| |
| private Map<Class<?>,Lookup> classLookups = new HashMap<Class<?>, Lookup>(); |
| private Map<List<String>,Lookup> pathsLookups = new HashMap<List<String>,Lookup>(); |
| |
| public SwitchLookup(MimePath mimePath) { |
| super(); |
| |
| this.mimePath = mimePath; |
| } |
| |
| public <T> Lookup.Result<T> lookup(Lookup.Template<T> template) { |
| return findLookup(template.getType()).lookup(template); |
| } |
| |
| public <T> T lookup(Class<T> clazz) { |
| return findLookup(clazz).lookup(clazz); |
| } |
| |
| private Lookup findLookup(Class<?> clazz) { |
| synchronized (LOCK) { |
| Lookup lookup = classLookups.get(clazz); |
| if (lookup == null) { |
| // Create lookup |
| lookup = createLookup(clazz); |
| classLookups.put(clazz, lookup); |
| } |
| return lookup; |
| } |
| } |
| |
| private Lookup createLookup(Class<?> forClass) { |
| MimeLocation loc = forClass.getAnnotation(MimeLocation.class); |
| |
| if (loc == null) { |
| loc = new MimeLocation() { |
| @Override |
| public String subfolderName() { |
| return null; |
| } |
| @Override |
| public Class<? extends InstanceProvider> instanceProviderClass() { |
| return null; |
| } |
| |
| @Override |
| public Class<? extends Annotation> annotationType() { |
| return MimeLocation.class; |
| } |
| }; |
| } |
| List<String> paths = computePaths(mimePath, ROOT_FOLDER, loc.subfolderName()); |
| Lookup lookup; |
| |
| if (loc.instanceProviderClass() != null && loc.instanceProviderClass() != InstanceProvider.class) { |
| try { |
| // Get a lookup for the new instance provider |
| lookup = getLookupForProvider(paths, loc.instanceProviderClass().newInstance()); |
| } catch (InstantiationException ex) { |
| Exceptions.printStackTrace(ex); |
| lookup = Lookup.EMPTY; |
| } catch (IllegalAccessException ex) { |
| Exceptions.printStackTrace(ex); |
| lookup = Lookup.EMPTY; |
| } |
| } else { |
| // Get a lookup for the new paths |
| lookup = getLookupForPaths(paths); |
| } |
| |
| return lookup; |
| } |
| |
| private Lookup getLookupForPaths(List<String> paths) { |
| Lookup lookup = pathsLookups.get(paths); |
| if (lookup == null) { |
| lookup = new FolderPathLookup(paths.toArray(new String[paths.size()])); |
| pathsLookups.put(paths, lookup); |
| } |
| |
| return lookup; |
| } |
| |
| private Lookup getLookupForProvider(List<String> paths, InstanceProvider instanceProvider) { |
| return new InstanceProviderLookup(paths.toArray(new String[paths.size()]), instanceProvider); |
| } |
| |
| private static List<String> computePaths(MimePath mimePath, String prefixPath, String suffixPath) { |
| try { |
| Method m = MimePath.class.getDeclaredMethod("getInheritedPaths", String.class, String.class); //NOI18N |
| m.setAccessible(true); |
| @SuppressWarnings("unchecked") |
| List<String> paths = (List<String>) m.invoke(mimePath, prefixPath, suffixPath); |
| return paths; |
| } catch (Exception e) { |
| LOG.log(Level.WARNING, "Can't call org.netbeans.api.editor.mimelookup.MimePath.getInheritedPaths method.", e); //NOI18N |
| } |
| |
| // No inherited mimepaths, provide at least something |
| StringBuilder sb = new StringBuilder(); |
| if (prefixPath != null && prefixPath.length() > 0) { |
| sb.append(prefixPath); |
| } |
| if (mimePath.size() > 0) { |
| if (sb.length() > 0) { |
| sb.append('/'); //NOI18N |
| } |
| sb.append(mimePath.getPath()); |
| } |
| if (suffixPath != null && suffixPath.length() > 0) { |
| if (sb.length() > 0) { |
| sb.append('/'); //NOI18N |
| } |
| sb.append(suffixPath); |
| } |
| return Collections.singletonList(sb.toString()); |
| } |
| |
| } |