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Here we describe how to implement a chart model (ChartModel). For the concept of component, model and render, please refer to the Model-driven Display section.

Depending on the type of the chart you want, you could implement one of PieModel, XYModel, GanttModel, HiLoModel, etc. In addition, there are the default implementations for them you could use directly, such as SimplePieModel, SimpleXYModel, etc.

For example, we could have a composer as follows.

public class ProgrammerModelComposer extends SelectorComposer<Component> {
    public void doAfterCompose(Component comp) throws Exception {
        PieModel piemodel = new SimplePieModel();
        piemodel.setValue("C/C++", new Double(12.5));
        piemodel.setValue("Java", new Double(50.2));
        piemodel.setValue("VB", new Double(20.5));
        piemodel.setValue("PHP", new Double(15.5));
        ((Chart) comp).setModel(piemodel);

Then, you could use it in a ZUML document:

<chart title="Pie Chart" width="500" height="250" type="pie" threeD="false" fgAlpha="128"

Version History

Last Update : 2014/1/27

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Copyright © Potix Corporation. This article is licensed under GNU Free Documentation License.

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