static CharFilter.Result getLookupAction(final char charTyped, final LookupImpl lookup) {
final CharFilter.Result filtersDecision = getFiltersDecision(charTyped, lookup);
if (!Registry.is("ide.completion.allow.finishing.by.chars")
&& filtersDecision == CharFilter.Result.SELECT_ITEM_AND_FINISH_LOOKUP) {
return CharFilter.Result.HIDE_LOOKUP;
}
final LookupElement currentItem = lookup.getCurrentItem();
if (currentItem != null && charTyped != ' ') {
String postfix = lookup.getAdditionalPrefix() + charTyped;
final PrefixMatcher matcher = lookup.itemMatcher(currentItem);
for (String lookupString : currentItem.getAllLookupStrings()) {
if (lookupString.startsWith(matcher.getPrefix() + postfix)) {
return CharFilter.Result.ADD_TO_PREFIX;
}
}
}
if (filtersDecision != null) {
return filtersDecision;
}
throw new AssertionError(
"Typed char not handler by char filter: c="
+ charTyped
+ "; prefix="
+ currentItem
+ "; filters="
+ Arrays.toString(getFilters()));
}
private static boolean completeTillTypedCharOccurrence(
char charTyped, LookupImpl lookup, LookupElement item) {
PrefixMatcher matcher = lookup.itemMatcher(item);
final String oldPrefix = matcher.getPrefix() + lookup.getAdditionalPrefix();
PrefixMatcher expanded = matcher.cloneWithPrefix(oldPrefix + charTyped);
if (expanded.prefixMatches(item)) {
for (String s : item.getAllLookupStrings()) {
if (matcher.prefixMatches(s)) {
int i = -1;
while (true) {
i = s.indexOf(charTyped, i + 1);
if (i < 0) break;
final String newPrefix = s.substring(0, i + 1);
if (expanded.prefixMatches(newPrefix)) {
lookup.replacePrefix(oldPrefix, newPrefix);
return true;
}
}
}
}
}
return false;
}
