/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2006, University of Maryland
 *
 * This library 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 the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307, USA
 */

package edu.umd.cs.findbugs.sourceViewer;

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

import javax.annotation.CheckForNull;


public class HighlightInformation {

    Map<Integer, Color> map = new HashMap<Integer, Color>();

    private int foundLineNum = -1;

    public void clear() {
        map.clear();
        foundLineNum = -1;
    }

    public void setHighlight(int start, int end, Color color) {
        for (int i = start; i <= end; i++) {
            map.put(i, color);
        }
    }

    public void setHighlight(Integer line, Color color) {
        map.put(line, color);
    }

    public void unsetHighlight(Integer line) {
        map.remove(line);
    }

    public void updateFoundLineNum(Integer line) {
        if (foundLineNum != -1) {
            unsetHighlight(foundLineNum);
        }
        foundLineNum = line;
    }

    public @CheckForNull
    Color getHighlight(Integer line) {
        return map.get(line);
    }
}
