/*
* 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.action;
import org.apache.uima.cas.Feature;
import org.apache.uima.cas.Type;
import org.apache.uima.cas.text.AnnotationFS;
import org.apache.uima.caseditor.editor.ICasDocument;
import org.apache.uima.caseditor.editor.ICasEditor;
import org.apache.uima.caseditor.editor.util.AnnotationSelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.actions.BaseSelectionListenerAction;
/**
* Widens the left side of the currently selected annotation by one.
*/
public final class WideLeftAnnotationSideAction extends BaseSelectionListenerAction {
public static final String ID = "WideLeftAnnotationSide";
private ICasEditor editor;
/**
* Initializes a new instance.
*
* @param document
*/
public WideLeftAnnotationSideAction(ICasEditor editor) {
super("WideLeftAnnotationSside");
this.editor = editor;
setEnabled(false);
}
@Override
protected boolean updateSelection(IStructuredSelection selection) {
AnnotationSelection annotation = new AnnotationSelection(selection);
return annotation.size() == 1;
}
/**
* Widens the annotation and sends and sends an update notification
* to the provided document.
*
* @param document
* @param annotation
*/
public static void wideLeftAnnotationSide(ICasDocument document, AnnotationFS annotation) {
Type annotationType = annotation.getType();
Feature beginFeature = annotationType.getFeatureByBaseName("begin");
if (annotation.getBegin() > 0) {
annotation.setIntValue(beginFeature, annotation.getBegin() - 1);
}
document.update(annotation);
}
/**
* Decreases the begin index of an annotation by one.
*/
@Override
public void run() {
AnnotationSelection annotations = new AnnotationSelection(getStructuredSelection());
AnnotationFS annotation = annotations.getFirst();
wideLeftAnnotationSide(editor.getDocument(), annotation);
}
}