Bug 232851 Performance regression: OpenCloseViewTest#showView:ResourceNavigator
3.4 HEAD: Elapsed : 624ms (95% in [621ms, 628ms]) Measurable effect: 6ms (0.4 SDs) CPU Time: 576ms (95% in [564ms, 589ms]) Measurable effect: 25ms (0.4 SDs)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/ResourceNavigator.java
IPath path = ((IResource) element).getFullPath();
            if (path.isRoot()) {
				return ResourceNavigatorMessages.ResourceManager_toolTip;
			}
            return path.makeRelative().toString();
        } 
        
        String text = ((ILabelProvider) getTreeViewer().getLabelProvider())
        	.getText(element);
        if(text == null) {
			return "";
		}
        return text;
    }
    /**
     * Handles an open event from the viewer.
     * Opens an editor on the selected file.
     * 
     * @param event the open event
     * @since 2.0
     */
    protected void handleOpen(OpenEvent event) {
        IStructuredSelection selection = (IStructuredSelection) event
                .getSelection();
        getActionGroup().runDefaultAction(selection);
    }
    /**
     * Handles a double-click event from the viewer.
     * Expands or collapses a folder when double-clicked.
     *