--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/dancres/blitz/tools/dash/ChartPanel.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,97 @@
+package org.dancres.blitz.tools.dash;
+
+import java.awt.BorderLayout;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+import javax.swing.JPanel;
+
+import org.dancres.blitz.tools.dash.graph.*;
+
+public class ChartPanel extends JPanel {
+	private Chart _chart = new Chart();
+	private Map _lookup = new HashMap();
+	private long[] _lastValues;
+	private final int MAX_SIZE = 100;
+	public ChartPanel() {
+		setLayout(new BorderLayout());
+		add(_chart, BorderLayout.CENTER);
+	}
+	public void update(String[] names, long[] newValues) {
+		try {
+			if (_lastValues == null) {
+				doUpdate(names, newValues);
+			}
+			for (int i = 0; i < newValues.length; i++) {
+				if (newValues[i] != _lastValues[i]) {
+					doUpdate(names, newValues);
+					return;
+				}
+			}
+		} catch (Exception ex) {
+			ex.printStackTrace();
+		}
+	}
+	private void doUpdate(String[] names, long[] newValues) throws Exception {
+		_lastValues = newValues;
+		for (int i = 0; i < newValues.length; i++) {
+			ArrayList history = (ArrayList) _lookup.get(names[i]);
+			if (history == null) {
+				if (newValues.length == 0 && newValues[i] == 0) {
+					return;
+				}
+				if (newValues.length > 0) {
+					//if they are all zero ommit
+					boolean ok = false;
+					for (int j = 0; !ok && j < newValues.length; j++) {
+						if (newValues[j] > 0) {
+							ok = true;
+						}
+					}
+					if (!ok) {
+						return;
+					}
+				}
+				
+				history = new ArrayList();
+				_lookup.put(names[i], history);
+				//add twice the first time to get a line
+				history.add(new Long(newValues[i]));
+				//first time so add the data
+				long startVal=0;//newValues[i];// - 1;
+				//if(startVal<0){
+					//startVal=0;
+				//}
+				addData(names[i], new double[]{startVal, newValues[i]});
+			} else {
+				
+				history.add(new Long(newValues[i]));
+				int n = history.size();
+				if (n > MAX_SIZE) {
+					n--;
+					history.remove(0);
+					
+				}
+				
+				double[] data = new double[n];
+				String[] labels = new String[n];
+				for (int j = 0; j < n; j++) {
+					labels[j] = "";
+					data[j] = ((Long) history.get(j)).longValue();
+					
+				}
+				labels[0] = "Last update: " + new java.util.Date();
+				_chart.setDataAt(i, names[i], data, labels, null);
+			}
+		}
+		_chart.repaint();
+	}
+	private void addData(String name, double[] data) throws Exception {
+		String[] labs = new String[data.length];
+		labs[0] = "Last update: " + new java.util.Date();
+		for (int i = 1; i < labs.length; i++) {
+			labs[i] = "";
+		}
+		_chart.addData(name, data, labs);
+	}
+}