hudson.plugins.covcomplplot.util
Class CustomGraph

java.lang.Object
  hudson.plugins.covcomplplot.util.CustomGraph

Direct Known Subclasses:

CovComplPlotTaget.GraphImpl

public abstract class CustomGraph
extends Object

Reimplementation of Graph class in Jenkins lib. lazyMap logic on which Graph class is based is not properly working in IE. Related doMap() method in the class is removed.

Author:

JunHo Yoon

Field Summary

protected int	defaultH
protected int	defaultW
protected org.jfree.chart.JFreeChart	graph
protected long	timestamp

Constructor Summary

protected	CustomGraph(Calendar timestamp, int defaultW, int defaultH) Constructor
protected	CustomGraph(long timestamp, int defaultW, int defaultH) Constructor

Method Summary

protected abstract org.jfree.chart.JFreeChart	createGraph() Prepare JFreeChart instance to render image
void	doPng(org.kohsuke.stapler.StaplerRequest req, org.kohsuke.stapler.StaplerResponse rsp) Renders a graph.
protected BufferedImage	render(org.kohsuke.stapler.StaplerRequest req) Actually render a chart.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

timestamp

protected final long timestamp

defaultW

protected final int defaultW

defaultH

protected final int defaultH

graph

protected volatile org.jfree.chart.JFreeChart graph

Constructor Detail

CustomGraph

protected CustomGraph(long timestamp,
                      int defaultW,
                      int defaultH)

Constructor

Parameters:

timestamp - Timestamp of this graph. Used for HTTP cache related headers. If the graph doesn't have any timestamp to tie it to, pass -1.

defaultW - default width

defaultH - default height

CustomGraph

protected CustomGraph(Calendar timestamp,
                      int defaultW,
                      int defaultH)

Constructor

Parameters:

timestamp - Timestamp of this graph. Used for HTTP cache related headers.

defaultW - default width

defaultH - default height

Method Detail

createGraph

protected abstract org.jfree.chart.JFreeChart createGraph()

Prepare JFreeChart instance to render image

Returns:

chart prepared JFreeChart instance

render

protected BufferedImage render(org.kohsuke.stapler.StaplerRequest req)

Actually render a chart.

Parameters:

req - the StaplerRequest instance from which the width and height attributes are extracted.

doPng

public void doPng(org.kohsuke.stapler.StaplerRequest req,
                  org.kohsuke.stapler.StaplerResponse rsp)
           throws IOException

Renders a graph.

Parameters:

req - request from which the some attribute is extracted (width / height)

rsp - response to which the image is written.

Throws:

IOException - occurs when there is IO problems