/*

* 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.java.debug;

import java.util.Collections;

import java.util.List;

import org.netbeans.api.java.source.CancellableTask;

import org.netbeans.api.java.source.CompilationInfo;

import org.netbeans.api.java.source.JavaSource;

import org.netbeans.api.java.source.JavaSource.Phase;

import org.netbeans.api.java.source.JavaSource.Priority;

import org.netbeans.api.java.source.JavaSourceTaskFactory;

import org.netbeans.api.java.source.support.LookupBasedJavaSourceTaskFactory;

import org.netbeans.modules.java.debug.TreeNavigatorJavaSourceFactory.WrapperTask;

import org.netbeans.modules.parsing.spi.TaskIndexingMode;

import org.openide.filesystems.FileObject;

import org.openide.util.Lookup;

/**

*

* @author Jan Lahoda

*/

@org.openide.util.lookup.ServiceProvider(service=org.netbeans.api.java.source.JavaSourceTaskFactory.class)

public final class ElementNavigatorJavaSourceFactory extends LookupBasedJavaSourceTaskFactory {

private CancellableTask<CompilationInfo> task;

static ElementNavigatorJavaSourceFactory getInstance() {

for (JavaSourceTaskFactory tf : Lookup.getDefault().lookupAll(JavaSourceTaskFactory.class)) {

if (tf instanceof ElementNavigatorJavaSourceFactory) {

return (ElementNavigatorJavaSourceFactory) tf;

}

}

return null;

}

public ElementNavigatorJavaSourceFactory() {

super(Phase.UP_TO_DATE, Priority.NORMAL, TaskIndexingMode.ALLOWED_DURING_SCAN);

}

public synchronized CancellableTask<CompilationInfo> createTask(FileObject file) {

//XXX: should not be necessary to do the wrapper task, but for some reason it is necessary:

return new WrapperTask(task);

}

public List<FileObject> getFileObjects() {

List<FileObject> result = super.getFileObjects();

if (result.size() == 1)

return result;

return Collections.emptyList();

}

public FileObject getFile() {

List<FileObject> result = super.getFileObjects();

if (result.size() == 1)

return result.get(0);

return null;

}

public synchronized void setLookup(Lookup l, CancellableTask<CompilationInfo> task) {

this.task = task;

super.setLookup(l);

}

}