SWT utility method for disposing of a resource when the disposal of a widget occurs.

SwtUtils.java

/**
 * SWT Utilities.
 *
 * @author Kevin Sawicki (kevin@github.com)
 */
public abstract class SwtUtils {

	/**
	 * Dispose of resource when widget is disposed.
	 * 
	 * This method immediately disposes of the resource if the widget is already
	 * disposed.
	 * 
	 * @param resource
	 * @param widget
	 */
	public static void hookDispose(final Resource resource, Widget widget) {
		if (widget == null || resource == null)
			return;

		if (!widget.isDisposed())
			widget.addDisposeListener(new DisposeListener() {

				public void widgetDisposed(DisposeEvent e) {
					resource.dispose();
				}
			});
		else
			resource.dispose();
	}

}