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* as indicated by the @author tags. See the copyright.txt file in the
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*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
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*
* This software is distributed in the hope that it will be useful,
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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package org.jboss.gwt.circuit.sample.calculator.views;
import static org.jboss.gwt.circuit.sample.calculator.Term.Op;
import java.util.Iterator;
import java.util.Set;
import com.google.common.collect.LinkedListMultimap;
import com.google.common.collect.Multimap;
import org.jboss.gwt.circuit.PropagatesChange;
import org.jboss.gwt.circuit.sample.calculator.CalculatorStore;
import org.jboss.gwt.circuit.sample.calculator.Term;
public class StatsView implements View {
public StatsView(final CalculatorStore store) {
store.addChangeHandler(new PropagatesChange.Handler() {
@Override
public void onChange(final Class<?> actionType) {
Multimap<Op, Term> termsByOp = LinkedListMultimap.create();
Set<Term> terms = store.getResults().keySet();
for (Term term : terms) {
termsByOp.put(term.getOp(), term);
}
StringBuilder message = new StringBuilder();
Set<Op> keys = termsByOp.keySet();
for (Iterator<Op> iterator = keys.iterator(); iterator.hasNext(); ) {
Op key = iterator.next();
message.append(key.name()).append("(").append(termsByOp.get(key).size()).append(")");
if (iterator.hasNext()) {
message.append(", ");
}
}
System.out.printf("Operation stats: %s\n", message);
}
});
}
}