package org.jboss.as.console.client.shared.jvm.charts;
import com.google.gwt.user.client.ui.*;
import com.google.gwt.visualization.client.AbstractDataTable;
import com.google.gwt.visualization.client.DataTable;
import com.google.gwt.visualization.client.visualizations.corechart.AxisOptions;
import com.google.gwt.visualization.client.visualizations.corechart.CoreChart;
import com.google.gwt.visualization.client.visualizations.corechart.LineChart;
import com.google.gwt.visualization.client.visualizations.corechart.Options;
import org.jboss.as.console.client.shared.jvm.model.HeapMetric;
import java.util.Date;
/**
* @author Heiko Braun
* @date 9/29/11
*/
public class HeapChartView extends AbstractChartView {
private DataTable data;
private LineChart chart;
private HTML usedLabel;
private HTML maxLabel;
public HeapChartView(String title) {
super(title);
}
public HeapChartView(int width, int height, String title) {
super(width, height, title);
}
public Widget asWidget() {
VerticalPanel layout = new VerticalPanel();
// chart
chart = new LineChart(createTable(), createOptions()) ;
layout.add(chart);
// labels
maxLabel = new HTML();
usedLabel = new HTML();
usedLabel.getElement().setAttribute("style", "padding-right:5px");
HorizontalPanel labels = new HorizontalPanel();
labels.add(usedLabel);
labels.add(maxLabel);
layout.add(labels);
labels.getElement().getParentElement().setAttribute("align", "center");
return layout;
}
private DataTable createTable() {
data = DataTable.create();
data.addColumn(AbstractDataTable.ColumnType.DATETIME, "Time");
data.addColumn(AbstractDataTable.ColumnType.NUMBER, "Used");
return data;
}
private Options createOptions() {
Options options = Options.create();
options.setWidth(width);
options.setHeight(height);
options.setTitle(title +" (mb)");
options.setType(CoreChart.Type.LINE);
return options;
}
public void addSample(HeapMetric heap) {
long usedMb = (heap.getUsed()/1024)/1024;
long maxMb = (heap.getMax()/1024)/1024;
maxLabel.setHTML("Max: " + maxMb + " mb");
usedLabel.setHTML("Used: "+usedMb+" mb");
data.addRow();
int nextRow = data.getNumberOfRows()-1;
data.setValue(nextRow, 0, new Date(System.currentTimeMillis()));
data.setValue(nextRow, 1, usedMb);
Options options = createOptions();
AxisOptions vaxis = AxisOptions.create();
vaxis.setMaxValue(maxMb);
//vaxis.set("vAxis.gridlineColor", "#FF6666");
options.setVAxisOptions(vaxis);
AxisOptions haxis = AxisOptions.create();
haxis.set("showTextEvery", "10.00");
haxis.set("maxAlternation", "1");
options.setHAxisOptions(haxis);
chart.draw(data, options);
}
public void clearSamples()
{
data = createTable();
chart.draw(data);
}
public long numSamples() {
return data.getNumberOfRows();
}
}