Bug 282008 [Compatibility] Support for 'sticky' views
We need to support the legacy 'sticky' view mechanism. This is used for Help, Cheat Sheets and such that need to remain visible across perspective switches.
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/StackModelFactory.java
IEclipseContext currentActive = toplevelContext;
					IEclipseContext child;
					while (currentActive != folderContext
							&& (child = (IEclipseContext) currentActive
									.get("activeChild")) != null && child != currentActive) { 
						currentActive = child;
					}
					
					if (currentActive == folderContext) {
						engine.setClassname(ctf, "active"); 
					} else {
						engine.setClassname(ctf, "inactive"); 
					}
				}
			});
		}
		return newWidget;
	}
	public void postProcess(MPart<?> part) {
		super.postProcess(part);
		if (!(part instanceof MStack))
			return;
		CTabFolder ctf = (CTabFolder) part.getWidget();
		MPart<?> selPart = ((MStack) part).getActiveChild();
		if (selPart == null)
			return;
		
		CTabItem selItem = findItemForPart(part, selPart);
		if (selItem != null) {
			ctf.setSelection(selItem);