| /* |
| * 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.beans.PropertyChangeEvent; |
| import java.beans.PropertyChangeListener; |
| import java.util.Collections; |
| import java.util.List; |
| import org.netbeans.spi.editor.mimelookup.InstanceProvider; |
| import org.openide.filesystems.FileObject; |
| import org.openide.util.lookup.AbstractLookup; |
| import org.openide.util.lookup.InstanceContent; |
| |
| /** |
| * |
| * @author vita |
| */ |
| public final class InstanceProviderLookup extends AbstractLookup { |
| |
| private InstanceContent content; |
| private InstanceProvider<?> instanceProvider; |
| |
| private CompoundFolderChildren children; |
| private PCL listener = new PCL(); |
| |
| /** Creates a new instance of InstanceProviderLookup */ |
| public InstanceProviderLookup(String [] paths, InstanceProvider instanceProvider) { |
| this(paths, instanceProvider, new InstanceContent()); |
| } |
| |
| private InstanceProviderLookup(String [] paths, InstanceProvider instanceProvider, InstanceContent content) { |
| super(content); |
| |
| this.content = content; |
| this.instanceProvider = instanceProvider; |
| |
| this.children = new CompoundFolderChildren(paths, true); |
| this.children.addPropertyChangeListener(listener); |
| } |
| |
| @Override |
| protected void initialize() { |
| rebuild(); |
| } |
| |
| private void rebuild() { |
| List<FileObject> files = children.getChildren(); |
| Object instance = instanceProvider.createInstance(files); |
| content.set(Collections.singleton(instance), null); |
| } |
| |
| private class PCL implements PropertyChangeListener { |
| public void propertyChange(PropertyChangeEvent evt) { |
| rebuild(); |
| } |
| } // End of PCL class |
| } |