| /** |
| * 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.tasklist.impl; |
| |
| import java.beans.PropertyChangeListener; |
| import java.beans.PropertyChangeSupport; |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.netbeans.spi.tasklist.TaskScanningScope; |
| import org.openide.util.Lookup; |
| import org.openide.util.LookupEvent; |
| import org.openide.util.LookupListener; |
| import org.openide.util.lookup.Lookups; |
| |
| /** |
| * |
| * @author S. Aubrecht |
| */ |
| public final class ScanningScopeList { |
| |
| public static final String PROP_SCOPE_LIST = "scopeList"; //NOI18N |
| |
| private static final String SCOPE_LIST_PATH = "TaskList/ScanningScopes"; //NOI18N |
| |
| private static ScanningScopeList theInstance; |
| |
| private PropertyChangeSupport propertySupport = new PropertyChangeSupport( this ); |
| |
| private Lookup.Result<TaskScanningScope> lookupRes; |
| |
| /** Creates a new instance of ScanningScopeList */ |
| private ScanningScopeList() { |
| } |
| |
| public static ScanningScopeList getDefault() { |
| if( null == theInstance ) { |
| theInstance = new ScanningScopeList(); |
| } |
| return theInstance; |
| } |
| |
| public void addPropertyChangeListener( PropertyChangeListener pcl ) { |
| propertySupport.addPropertyChangeListener( pcl ); |
| } |
| |
| public void removePropertyChangeListener( PropertyChangeListener pcl ) { |
| propertySupport.removePropertyChangeListener( pcl ); |
| } |
| |
| public List<TaskScanningScope> getTaskScanningScopes() { |
| if( null == lookupRes ) { |
| lookupRes = initLookup(); |
| lookupRes.addLookupListener( new LookupListener() { |
| public void resultChanged(LookupEvent ev) { |
| fireScopeListChange(); |
| } |
| }); |
| } |
| return new ArrayList<TaskScanningScope>( lookupRes.allInstances() ); |
| } |
| |
| public TaskScanningScope getDefaultScope() { |
| List<TaskScanningScope> scopes = getTaskScanningScopes(); |
| for( TaskScanningScope ss : scopes ) { |
| if( Accessor.isDefault( ss ) ) { |
| return ss; |
| } |
| } |
| return scopes.isEmpty() ? null : scopes.get( 0 ); |
| } |
| |
| private Lookup.Result<TaskScanningScope> initLookup() { |
| Lookup lkp = Lookups.forPath( SCOPE_LIST_PATH ); |
| Lookup.Template<TaskScanningScope> template = new Lookup.Template<TaskScanningScope>( TaskScanningScope.class ); |
| Lookup.Result<TaskScanningScope> res = lkp.lookup( template ); |
| return res; |
| } |
| |
| private void fireScopeListChange() { |
| propertySupport.firePropertyChange( PROP_SCOPE_LIST, null, getTaskScanningScopes() ); |
| } |
| } |