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
super.setOffset(off);
				super.setLength(len);
			}
		}
		/*
		 * @see org.eclipse.jface.text.Position#setLength(int)
		 */
		public void setLength(int length) {
			synchronized (fLock) {
				super.setLength(length);
			}
		}
		/*
		 * @see org.eclipse.jface.text.Position#setOffset(int)
		 */
		public void setOffset(int offset) {
			synchronized (fLock) {
				super.setOffset(offset);
			}
		}
		/*
		 * @see org.eclipse.jface.text.Position#delete()
		 */
		public void delete() {
			synchronized (fLock) {
				super.delete();
			}
		}
		/*
		 * @see org.eclipse.jface.text.Position#undelete()