Package javax.swing

Examples of javax.swing.JViewport.removeChangeListener()

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    }

    protected void updateViewport(final PropertyChangeEvent e) {
        JViewport oldValue = (JViewport)e.getOldValue();
        if (oldValue != null) {
            oldValue.removeChangeListener(viewportChangeListener);
        }

        JViewport newValue = (JViewport)e.getNewValue();
        if (newValue != null) {
            newValue.addChangeListener(viewportChangeListener);
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    }

    protected void updateViewport(final PropertyChangeEvent e) {
        JViewport oldValue = (JViewport)e.getOldValue();
        if (oldValue != null) {
            oldValue.removeChangeListener(viewportChangeListener);
        }

        JViewport newValue = (JViewport)e.getNewValue();
        if (newValue != null) {
            newValue.addChangeListener(viewportChangeListener);
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