Bug 97810 [preferences] Code template preference page buttons are not grayed out if invoked as project specific property page
3.1 RC1 Steps to reproduce: - Invoke Override Method on a project with no project-specific settings - Follow link to code template preference page -> Edit, Import, ... buttons are disabled, but not grayed out -> Toggling 'Enable project specific settings twice correctly grays out the buttons
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/dialogfields/ListDialogField.java
for (int i= 0; i < nElements; i++) {
				Object elem= elements.get(i);
				if (!fElements.contains(elem)) {
					elementsToAdd.add(elem);
				}	
			}
			fElements.addAll(elementsToAdd);
			if (isOkToUse(fTableControl)) {
				fTable.add(elementsToAdd.toArray());
				fTable.setSelection(new StructuredSelection(elementsToAdd));
			}
			dialogFieldChanged();
		}
	}	
	/**
	 * Adds an element at a position.
	 */	
	public void removeAllElements() {
		if (fElements.size() > 0) {
			fElements.clear();
			if (isOkToUse(fTableControl)) {
				fTable.refresh();
			}
			dialogFieldChanged();
		}
	}
		
	/**
	 * Removes an element from the list.
	 */