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// Copyright 2014 Google Inc. All rights reserved.
//
// Licensed 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 com.google.devtools.build.lib.profiler.chart;
import com.google.common.base.Preconditions;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* A row of a Gantt Chart. A chart row is identified by its id and has an index that
* determines its location in the chart.
*/
public class ChartRow implements Comparable<ChartRow> {
/** The unique id of this row. */
private final String id;
/** The index, i.e., the row number of the row in the chart. */
private final int index;
/** The list of bars in this row. */
private final List<ChartBar> bars = new ArrayList<>();
/**
* Creates a chart row.
*
* @param id the unique id of this row
* @param index the index, i.e., the row number, of the row in the chart
*/
public ChartRow(String id, int index) {
Preconditions.checkNotNull(id);
this.id = id;
this.index = index;
}
/**
* Adds a bar to the chart row.
*
* @param bar the {@link ChartBar} to add
*/
public void addBar(ChartBar bar) {
bars.add(bar);
}
/**
* Returns the bars of the row as an unmodifieable list.
*/
public List<ChartBar> getBars() {
return Collections.unmodifiableList(bars);
}
/**
* Accepts a {@link ChartVisitor}. Calls {@link ChartVisitor#visit(ChartRow)}
* and delegates the visitor to the bars of the chart row.
*
* @param visitor the visitor to accept
*/
public void accept(ChartVisitor visitor) {
visitor.visit(this);
for (ChartBar bar : bars) {
bar.accept(visitor);
}
}
/**
* {@inheritDoc}
*
* <p>Compares to rows by their index.
*/
@Override
public int compareTo(ChartRow other) {
return index - other.index;
}
public int getIndex() {
return index;
}
public String getId() {
return id;
}
}
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