/*******************************************************************************
* Copyright (c) 2006, 2014 Mountainminds GmbH & Co. KG and Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
******************************************************************************/
package com.mountainminds.eclemma.internal.ui.coverageview;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.ui.model.WorkbenchContentProvider;
import org.jacoco.core.analysis.ICoverageNode;
import com.mountainminds.eclemma.core.CoverageTools;
/**
* Internal cache to calculate and keep the maximum total amount within a group.
*/
class MaxTotalCache {
private final ViewSettings settings;
private final ITreeContentProvider contentProvider;
private Map<IJavaElement, Integer> maxTotals;
MaxTotalCache(ViewSettings settings) {
this.settings = settings;
this.contentProvider = new WorkbenchContentProvider();
this.maxTotals = new HashMap<IJavaElement, Integer>();
}
int getMaxTotal(Object element) {
final IJavaElement parent = ((IJavaElement) element).getParent();
Integer max = maxTotals.get(parent);
if (max == null) {
max = Integer.valueOf(calculateMaxTotal(parent));
maxTotals.put(parent, max);
}
return max.intValue();
}
private int calculateMaxTotal(IJavaElement parent) {
int max = 0;
for (Object sibling : contentProvider.getChildren(parent)) {
final ICoverageNode coverage = CoverageTools.getCoverageInfo(sibling);
if (coverage != null) {
max = Math.max(max, coverage.getCounter(settings.getCounters())
.getTotalCount());
}
}
return max;
}
void reset() {
maxTotals.clear();
}
}