/*
 * 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.uima.taeconfigurator.editors.xml;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;

/**
 * The Class ColorManager.
 */
public class ColorManager {

  /** The color table. */
  protected Map fColorTable = new HashMap(10);

  /**
   * Dispose.
   */
  public void dispose() {
    Iterator e = fColorTable.values().iterator();
    while (e.hasNext())
      ((Color) e.next()).dispose();
  }

  /**
   * Gets the color.
   *
   * @param rgb
   *          the rgb
   * @return the color
   */
  public Color getColor(RGB rgb) {
    Color color = (Color) fColorTable.get(rgb);
    if (color == null) {
      color = new Color(Display.getCurrent(), rgb);
      fColorTable.put(rgb, color);
    }
    return color;
  }
}
