/*
* 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.isis.viewer.dnd.histogram;
import java.util.List;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
import org.apache.isis.viewer.dnd.view.Content;
import org.apache.isis.viewer.dnd.view.ViewAxis;
import org.apache.isis.viewer.dnd.view.collection.CollectionContent;
class HistogramAxis implements ViewAxis {
private final ObjectAssociation fields[];
private final double maxValues[];
private final int noBars;
public HistogramAxis(final Content content) {
final List<? extends ObjectAssociation> associationList = HistogramSpecification.availableFields((CollectionContent) content);
noBars = associationList.size();
fields = new ObjectAssociation[noBars];
maxValues = new double[noBars];
int i = 0;
for (final ObjectAssociation association : associationList) {
fields[i++] = association;
}
}
public double getLengthFor(final Content content, final int fieldNo) {
return NumberAdapters.doubleValue(fields[fieldNo], fields[fieldNo].get(content.getAdapter())) / maxValues[fieldNo];
}
public void determineMaximum(final Content content) {
int i = 0;
for (final ObjectAssociation field : fields) {
maxValues[i] = 0;
final CollectionFacet collectionFacet = content.getAdapter().getSpecification().getFacet(CollectionFacet.class);
for (final ObjectAdapter element : collectionFacet.iterable(content.getAdapter())) {
final ObjectAdapter value = field.get(element);
final double doubleValue = NumberAdapters.doubleValue(field, value);
maxValues[i] = Math.max(maxValues[i], doubleValue);
}
i++;
}
}
public int getNoBars() {
return noBars;
}
}