RCP SWT Eclipse-清除复合容器

Question

I need your help... I have a 2 Composite container. One of them with 2 radio button, the first radio button is CHART and the other is REPORT. When the user select chart, a chart is loaded in the second Composite, everything ok but I don´t know how to remove the chart when the user select "report", is there any way to clear or remove it? I tried it but I can´t find a solution. Thanks!

contenedor_chart = new Composite(parent, SWT.NONE);
        contenedor_chart.setLayout(new FillLayout());
        FillLayout filllayout = new FillLayout();
        filllayout.marginWidth = 50;
        filllayout.marginHeight = 50;

        contenedor_chart.setLayout(filllayout);
        CategoryDataset dataset = cbch.createDataset();
        JFreeChart chart = cbch.createChart(dataset);
        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(400, 170));
        new ChartComposite(contenedor_chart, SWT.NONE, chart, true);

Answer 1

You can just dispose of the control you no longer want by calling its dispose method:

Control chart = ... chart control

chart.dispose();

Just calling dispose will not reclaim the space used by the control unless you force the controls to be layed out again. For example to lay out the whole Shell use:

Shell shell = ... current shell

shell.pack();

which lays out the controls in the shell and adjusts the shell size to fit.

If you want to reuse the chart then don't call dispose or pack . You can just call setVisible(false) on the control.

You could also look at using StackLayout to layout multiple controls in a Composite or use the Eclipse PageBook control.