/*
* 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.editview;
import org.apache.uima.cas.ArrayFS;
import org.apache.uima.cas.FeatureStructure;
import org.apache.uima.caseditor.editor.ArrayValue;
import org.apache.uima.caseditor.editor.CasEditorError;
import org.apache.uima.caseditor.editor.FeatureValue;
import org.apache.uima.caseditor.editor.util.Primitives;
import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.ViewerCell;
/**
* Provides the labels for the edit view.
*/
final class ValueColumnLabelProvider extends CellLabelProvider {
@Override
public void update(ViewerCell cell) {
Object element = cell.getElement();
if (element instanceof FeatureValue) {
FeatureValue featureValue = (FeatureValue) element;
if (featureValue.getFeature().getRange().isPrimitive()) {
cell.setText(Primitives.getPrimitive(featureValue.getFeatureStructure(), featureValue.getFeature()).toString());
}
else {
FeatureStructure value = (FeatureStructure) featureValue.getValue();
if (value == null) {
cell.setText("null");
} else {
cell.setText("[" + value.getType().getShortName() + "]");
}
}
}
else if (element instanceof ArrayValue) {
ArrayValue value = (ArrayValue) element;
if (value.getFeatureStructure() instanceof ArrayFS) {
ArrayFS array = (ArrayFS) value.getFeatureStructure();
FeatureStructure fs = array.get(value.slot());
if (fs == null) {
cell.setText("null");
}
else {
cell.setText("[" + fs.getType().getShortName() + "]");
}
}
else {
cell.setText(value.get().toString());
}
}
else {
throw new CasEditorError("Unkown element!");
}
}
}