Bug 26979 Outline pop-up: flicker when filtering
1) open the outline pop-up (ctrl-O) 2) type in a letter ->observe that you can watch how the tree items are removed and then added again. Use of setRedraw(false/true) during filtering should avoid this flickering
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/text/JavaSourceViewerConfiguration.java
* @return the Java string scanner
	 * 
	 * @since 2.0
	 */
	protected RuleBasedScanner getStringScanner() {
		return fJavaTextTools.getStringScanner();
	}
	
	/**
	 * Returns the JavaDoc scanner for this configuration.
	 *
	 * @return the JavaDoc scanner
	 */
	protected RuleBasedScanner getJavaDocScanner() {
		return fJavaTextTools.getJavaDocScanner();
	}
	
	/**
	 * Returns the color manager for this configuration.
	 *
	 * @return the color manager
	 */
	protected IColorManager getColorManager() {
		return fJavaTextTools.getColorManager();
	}
	
	/**
	 * Returns the editor in which the configured viewer(s) will reside.
	 *
	 * @return the enclosing editor