/* | |
* 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.apache.uima.caseditor.editor; | |
import java.util.ArrayList; | |
import java.util.Collection; | |
import org.apache.uima.cas.FeatureStructure; | |
import org.apache.uima.cas.text.AnnotationFS; | |
/** | |
* This listener listens only for {@link AnnotationFS} change events. All other change events for | |
* {@link FeatureStructure}s are filtered. | |
*/ | |
public abstract class AbstractAnnotationDocumentListener extends AbstractDocumentListener { | |
private Collection<AnnotationFS> filterAnnotations(Collection<FeatureStructure> strcutres) { | |
Collection<AnnotationFS> annotations = new ArrayList<AnnotationFS>(strcutres.size()); | |
for (FeatureStructure structure : strcutres) { | |
if (structure instanceof AnnotationFS) { | |
annotations.add((AnnotationFS) structure); | |
} | |
} | |
return annotations; | |
} | |
/** | |
* Add notification. | |
*/ | |
public void added(Collection<FeatureStructure> structres) { | |
Collection<AnnotationFS> annotations = filterAnnotations(structres); | |
if (!annotations.isEmpty()) { | |
addedAnnotation(annotations); | |
} | |
} | |
/** | |
* Remove notification. | |
*/ | |
public void removed(Collection<FeatureStructure> structres) { | |
Collection<AnnotationFS> annotations = filterAnnotations(structres); | |
if (!annotations.isEmpty()) { | |
removedAnnotation(annotations); | |
} | |
} | |
/** | |
* Update notification. | |
*/ | |
public void updated(Collection<FeatureStructure> structres) { | |
Collection<AnnotationFS> annotations = filterAnnotations(structres); | |
if (!annotations.isEmpty()) { | |
updatedAnnotation(annotations); | |
} | |
} | |
protected abstract void addedAnnotation(Collection<AnnotationFS> annotations); | |
protected abstract void removedAnnotation(Collection<AnnotationFS> annotations); | |
protected abstract void updatedAnnotation(Collection<AnnotationFS> annotations); | |
} |