Bug 314317 Cannot re-create a previously closed MWindow instance
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/WBWRenderer.java
TrimmedPartLayout tpl = (TrimmedPartLayout) shellComp.getLayout();
		return tpl.clientArea;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.e4.workbench.ui.renderers.PartFactory#postProcess(org.eclipse
	 * .e4.ui.model.application.MPart)
	 */
	@Override
	public void postProcess(MUIElement childME) {
		super.postProcess(childME);
		Shell shell = (Shell) childME.getWidget();
		shell.layout(true);
		if (childME.isVisible()) {
			shell.open();
		} else {
			shell.setVisible(false);
		}
	}
	private Object[] promptForSave(Shell parentShell,
			Collection<MPart> saveableParts) {
		SaveablePartPromptDialog dialog = new SaveablePartPromptDialog(
				parentShell, saveableParts);
		if (dialog.open() == Window.CANCEL) {
			return null;
		}
		return dialog.getCheckedElements();
	}