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package org.netbeans.lib.profiler.charts.axis;

import java.util.Iterator;
import java.util.NoSuchElementException;
import javax.swing.SwingConstants;
import org.netbeans.lib.profiler.charts.ChartContext;

 * @author Jiri Sedlacek
00055 public interface AxisMarksComputer {

    public static final Iterator<AxisMark> EMPTY_ITERATOR =
        new Iterator<AxisMark>() {
            public boolean hasNext() { return false; }
            public AxisMark next() { throw new NoSuchElementException(); }
            public void remove() { throw new IllegalStateException(); }

    public Iterator<AxisMark> marksIterator(int start, int end);

    public static abstract class Abstract implements AxisMarksComputer {

        protected final ChartContext context;

        protected final int orientation;

        protected final boolean horizontal;
        protected final boolean reverse;

        public Abstract(ChartContext context, int orientation) {
            this.context = context;
            this.orientation = orientation;

            horizontal = orientation == SwingConstants.HORIZONTAL;
            reverse = horizontal ? context.isRightBased() :

        // Return minimum distance between two axis marks
        protected int getMinMarksDistance() {
            return 50;

        // Returns true if the configuration changed and axis should be repainted
        protected boolean refreshConfiguration() {
            return true;


    public static abstract class AbstractIterator implements Iterator<AxisMark> {
        public void remove() {
            throw new UnsupportedOperationException(
                      "AxisMarksComputer does not support remove()"); // NOI18N


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