geode-core/src/test/java/org/apache/geode/sequence/StateColorMap.java

/*
 * 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.geode.sequence;

import static java.lang.Math.random;

import java.awt.Color;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by IntelliJ IDEA. User: dsmith Date: Nov 12, 2010 Time: 5:05:49 PM To change this
 * template use File | Settings | File Templates.
 */
public class StateColorMap {
  private Map<Object, Color> colors = new HashMap<Object, Color>();
  private static Color[] PREDEFINED_COLORS =
      new Color[] {Color.BLUE, Color.BLACK, Color.PINK, Color.CYAN, Color.ORANGE, Color.GREEN};

  private ColorList colorList = new ColorList();

  public StateColorMap() {
    colors.put("created", Color.GREEN);
    colors.put("destroyed", Color.WHITE);
    colors.put("persisted", new Color(0, 150, 0));
  }


  public Color getColor(Object state) {
    Color color = colors.get(state);
    if (color == null) {
      color = colorList.nextColor();
      colors.put(state, color);
    }

    return color;
  }

  private static class ColorList {
    int colorIndex;

    public Color nextColor() {
      if (colorIndex < PREDEFINED_COLORS.length) {
        return PREDEFINED_COLORS[colorIndex++];
      } else {
        return Color.getHSBColor((float) random(), (float) random(), (float) random());
      }
    }
  }
}