Bug 99140 [preferences] Syntax coloring preference page does not update preview
N20050609-0010 + JDT/Core & UI from HEAD Syntax coloring preference page does not update preview: - enable 'Auto(un)boxed expressions' -> changing one of the color or font settings does not update the preview - toggling 'Enable' updates the preview
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/SemanticHighlightingManager.java
* @param event The event
	 */
	private void handlePropertyChangeEvent(PropertyChangeEvent event) {
		if (fPreferenceStore == null)
			return; 
		if (fConfiguration != null)
			fConfiguration.handlePropertyChangeEvent(event);
		if (SemanticHighlightings.affectsEnablement(fPreferenceStore, event)) {
			if (isEnabled())
				enable();
			else
				disable();
		}
		if (!isEnabled())
			return;
		String property= event.getProperty();
		boolean changed= false;
		
		for (int i= 0, n= fSemanticHighlightings.length; i < n; i++) {
			SemanticHighlighting semanticHighlighting= fSemanticHighlightings[i];
			String colorKey= SemanticHighlightings.getColorPreferenceKey(semanticHighlighting);
			if (colorKey.equals(property)) {
				adaptToTextForegroundChange(fHighlightings[i], event);
				changed= true;
				continue;
			}
			String boldKey= SemanticHighlightings.getBoldPreferenceKey(semanticHighlighting);
			if (boldKey.equals(property)) {
				adaptToTextStyleChange(fHighlightings[i], event, SWT.BOLD);
				changed= true;