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/*
* 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);
}