Bug 15604 Promote Fill arguments on method completion to a real preference
It is still in work in progress but it has become an established feature by now. Promote the preference to the code assist preference page.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/ContentAssistPreference.java
if (AUTOACTIVATION.equals(p)) {
			boolean enabled= store.getBoolean(AUTOACTIVATION);
			assistant.enableAutoActivation(enabled);
		} else if (AUTOACTIVATION_DELAY.equals(p)) {
			int delay= store.getInt(AUTOACTIVATION_DELAY);
			assistant.setAutoActivationDelay(delay);
		} else if (PROPOSALS_FOREGROUND.equals(p)) {
			Color c= getColor(store, PROPOSALS_FOREGROUND);
			assistant.setProposalSelectorForeground(c);
		} else if (PROPOSALS_BACKGROUND.equals(p)) {
			Color c= getColor(store, PROPOSALS_BACKGROUND);
			assistant.setProposalSelectorBackground(c);
		} else if (PARAMETERS_FOREGROUND.equals(p)) {
			Color c= getColor(store, PARAMETERS_FOREGROUND);
			assistant.setContextInformationPopupForeground(c);
			assistant.setContextSelectorForeground(c);
		} else if (PARAMETERS_BACKGROUND.equals(p)) {
			Color c= getColor(store, PARAMETERS_BACKGROUND);
			assistant.setContextInformationPopupBackground(c);
			assistant.setContextSelectorBackground(c);
		} else if (AUTOINSERT.equals(p)) {
			boolean enabled= store.getBoolean(AUTOINSERT);
			assistant.enableAutoInsert(enabled);
		}
		
		changeJavaProcessor(assistant, store, p);
		changeJavaDocProcessor(assistant, store, p);
	}
}