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I've put up a newer, Wicket 1.4 based solution on a gist at github. Provides the same functionality - a component that displays a JFreeChart with tooltips and clickable entities. This solution uses models and thus allows the graph to be redrawn when the model data changes.
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IModel<JFreeChartRenderingBean> chartModel = new AbstractReadOnlyModel<JFreeChartRenderingBean>(){
@Override
public JFreeChartRenderingBean getObject() {
return new JFreeChartRenderingBean(constructChart(), CHART_WIDTH, CHART_HEIGHT);
}
};
MappedJFreeChartPanel graphPanel = new MappedJFreeChartPanel("graphPanel", chartModel);
add(graphPanel);
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