Example usage for org.jfree.data.general PieDataset addChangeListener

Introduction

In this page you can find the example usage for org.jfree.data.general PieDataset addChangeListener.

Prototype

public void addChangeListener(DatasetChangeListener listener);

Source Link

Document

Registers an object for notification of changes to the dataset.

Usage

From source file:net.sourceforge.processdash.ui.lib.chart.DiscPlot.java

public DiscPlot(PieDataset dataset) {
    super();//from  www .  j  a  va  2  s.  co m
    this.dataset = dataset;
    if (dataset != null) {
        dataset.addChangeListener(this);
    }
    this.interiorGap = DEFAULT_INTERIOR_GAP;
    this.discDistributor = new StandardDiscItemDistributor(dataset);
    this.discRenderer = new StandardDiscItemRenderer();

    this.labelGenerator = new StandardPieSectionLabelGenerator();
    this.labelFont = DEFAULT_LABEL_FONT;
    this.labelPaint = DEFAULT_LABEL_PAINT;

    this.toolTipGenerator = new StandardPieToolTipGenerator();
    this.urlGenerator = null;
}

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From source file:net.sourceforge.processdash.ui.lib.chart.DiscPlot.java

/**
 * Sets the dataset and sends a {@link DatasetChangeEvent} to 'this'.
 *
 * @param dataset  the dataset (<code>null</code> permitted).
 * //  w  w  w  . ja  v  a  2 s.  c om
 * @see #getDataset()
 */
public void setDataset(PieDataset dataset) {
    // if there is an existing dataset, remove the plot from the list of
    // change listeners...
    PieDataset existing = this.dataset;
    if (existing != null) {
        existing.removeChangeListener(this);
    }

    // set the new dataset, and register the chart as a change listener...
    this.dataset = dataset;
    if (dataset != null) {
        setDatasetGroup(dataset.getGroup());
        dataset.addChangeListener(this);
    }

    // tell the item distributor about the change
    if (discDistributor != null) {
        discDistributor.setDataset(dataset);
    }

    // send a dataset change event to self...
    DatasetChangeEvent event = new DatasetChangeEvent(this, dataset);
    datasetChanged(event);
}

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