Bug 254673 [JFace] Window javadoc hints at overriding createShell() when this is not possible
This is the javadoc of Window's createShell() method: /** * Creates and returns this window's shell. * <p> * The default implementation of this framework method creates * a new shell and configures it using <code/>configureShell</code>. Rather * than override this method, subclasses should instead override * <code/>configureShell</code>. * </p> * * @return the shell */ The statement "Rather than override this method, subclasses should instead override configureShell." somewhat sounds like a warning that the user should do one instead of the other...but you could still go the other way if you so desire. However, overriding createShell() is not actually even possible because it is spec'ed as being final.
bundles/org.eclipse.jface/src/org/eclipse/jface/window/Window.java
if (windowManager != null) {
			windowManager.remove(this);
			windowManager = null;
		}
		if (shell == null || shell.isDisposed()) {
			return true;
		}
		
		
		
		shell.dispose();
		shell = null;
		contents = null;
		return true;
	}
	/**
	 * Configures the given shell in preparation for opening this window in it.
	 * <p>
	 * The default implementation of this framework method sets the shell's
	 * image and gives it a grid layout. Subclasses may extend or reimplement.
	 * </p>
	 * 
	 * @param newShell
	 *            the shell
	 */
	protected void configureShell(Shell newShell) {