Bug 313382 No 'X' close buttons on views
The renderer is currently ignoring the 'closeable' feature for MParts if it's actually represented by a placeholder (i.e. 3.x views).
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/StackRenderer.java
event.doit = false;
				}
			}
		};
		ctf.addCTabFolder2Listener(closeListener);
		
		
		ctf.addListener(SWT.Activate, new org.eclipse.swt.widgets.Listener() {
			public void handleEvent(org.eclipse.swt.widgets.Event event) {
				CTabFolder ctf = (CTabFolder) event.widget;
				MElementContainer<MUIElement> stack = (MElementContainer<MUIElement>) ctf
						.getData(OWNING_ME);
				activateStack(stack);
			}
		});
	}
	protected void showTab(MUIElement element) {
		super.showTab(element);
		CTabFolder ctf = (CTabFolder) getParentWidget(element);
		CTabItem cti = findItemForPart(element, null);
		if (cti == null) {
			createTab(element.getParent(), element);
			cti = findItemForPart(element, element.getParent());
		}
		Control ctrl = (Control) element.getWidget();
		if (element.getWidget() == null || ctrl.getParent() != ctf) {
			Control tabCtrl = (Control) renderer.createGui(element);
			cti.setControl(tabCtrl);
		} else if (cti.getControl() == null) {
			cti.setControl((Control) element.getWidget());