public boolean fillInCommonPrefix(boolean explicitlyInvoked) {
if (explicitlyInvoked) {
setFocusDegree(FocusDegree.FOCUSED);
}
if (explicitlyInvoked && myCalculating) return false;
if (!explicitlyInvoked && mySelectionTouched) return false;
ListModel listModel = getListModel();
if (listModel.getSize() <= 1) return false;
if (listModel.getSize() == 0) return false;
final LookupElement firstItem = (LookupElement) listModel.getElementAt(0);
if (listModel.getSize() == 1 && firstItem instanceof EmptyLookupItem) return false;
final PrefixMatcher firstItemMatcher = itemMatcher(firstItem);
final String oldPrefix = firstItemMatcher.getPrefix();
final String presentPrefix = oldPrefix + getAdditionalPrefix();
String commonPrefix = getCaseCorrectedLookupString(firstItem);
for (int i = 1; i < listModel.getSize(); i++) {
LookupElement item = (LookupElement) listModel.getElementAt(i);
if (item instanceof EmptyLookupItem) return false;
if (!oldPrefix.equals(itemMatcher(item).getPrefix())) return false;
final String lookupString = getCaseCorrectedLookupString(item);
final int length = Math.min(commonPrefix.length(), lookupString.length());
if (length < commonPrefix.length()) {
commonPrefix = commonPrefix.substring(0, length);
}
for (int j = 0; j < length; j++) {
if (commonPrefix.charAt(j) != lookupString.charAt(j)) {
commonPrefix = lookupString.substring(0, j);
break;
}
}
if (commonPrefix.length() == 0 || commonPrefix.length() < presentPrefix.length()) {
return false;
}
}
if (commonPrefix.equals(presentPrefix)) {
return false;
}
for (int i = 0; i < listModel.getSize(); i++) {
LookupElement item = (LookupElement) listModel.getElementAt(i);
if (!itemMatcher(item).cloneWithPrefix(commonPrefix).prefixMatches(item)) {
return false;
}
}
myOffsets.setInitialPrefix(presentPrefix, explicitlyInvoked);
replacePrefix(presentPrefix, commonPrefix);
return true;
}
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()));
}
@NotNull
private static Set<String> sortMatching(
@NotNull PrefixMatcher matcher, @NotNull Collection<String> names, @NotNull GoFile file) {
ProgressManager.checkCanceled();
String prefix = matcher.getPrefix();
if (prefix.isEmpty()) return ContainerUtil.newLinkedHashSet(names);
Set<String> packagesWithAliases = ContainerUtil.newHashSet();
for (Map.Entry<String, Collection<GoImportSpec>> entry : file.getImportMap().entrySet()) {
for (GoImportSpec spec : entry.getValue()) {
String alias = spec.getAlias();
if (spec.isDot() || alias != null) {
packagesWithAliases.add(entry.getKey());
break;
}
}
}
List<String> sorted = ContainerUtil.newArrayList();
for (String name : names) {
if (matcher.prefixMatches(name) || packagesWithAliases.contains(substringBefore(name, '.'))) {
sorted.add(name);
}
}
ProgressManager.checkCanceled();
Collections.sort(sorted, String.CASE_INSENSITIVE_ORDER);
ProgressManager.checkCanceled();
LinkedHashSet<String> result = new LinkedHashSet<String>();
for (String name : sorted) {
if (matcher.isStartMatch(name)) {
result.add(name);
}
}
ProgressManager.checkCanceled();
result.addAll(sorted);
return result;
}
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;
}
@Override
public void fillCompletionVariants(
final CompletionParameters parameters, final CompletionResultSet _result) {
if (parameters.getCompletionType() != CompletionType.BASIC) {
return;
}
final PsiElement position = parameters.getPosition();
if (!isInJavaContext(position)) {
return;
}
if (AFTER_NUMBER_LITERAL.accepts(position)
|| UNEXPECTED_REFERENCE_AFTER_DOT.accepts(position)) {
_result.stopHere();
return;
}
final CompletionResultSet result = JavaCompletionSorting.addJavaSorting(parameters, _result);
if (ANNOTATION_ATTRIBUTE_NAME.accepts(position)
&& !JavaCompletionData.isAfterPrimitiveOrArrayType(position)) {
JavaCompletionData.addExpectedTypeMembers(parameters, result);
completeAnnotationAttributeName(result, position, parameters);
result.stopHere();
return;
}
final InheritorsHolder inheritors = new InheritorsHolder(position, result);
if (JavaSmartCompletionContributor.IN_TYPE_ARGS.accepts(position)) {
new TypeArgumentCompletionProvider(false, inheritors)
.addCompletions(parameters, new ProcessingContext(), result);
}
PrefixMatcher matcher = result.getPrefixMatcher();
if (JavaSmartCompletionContributor.AFTER_NEW.accepts(position)) {
new JavaInheritorsGetter(ConstructorInsertHandler.BASIC_INSTANCE)
.generateVariants(parameters, matcher, inheritors);
}
if (IMPORT_REFERENCE.accepts(position)) {
result.addElement(LookupElementBuilder.create("*"));
}
addKeywords(parameters, result);
Set<String> usedWords = addReferenceVariants(parameters, result, inheritors);
if (psiElement().inside(PsiLiteralExpression.class).accepts(position)) {
PsiReference reference = position.getContainingFile().findReferenceAt(parameters.getOffset());
if (reference == null || reference.isSoft()) {
WordCompletionContributor.addWordCompletionVariants(result, parameters, usedWords);
}
}
JavaGenerateMemberCompletionContributor.fillCompletionVariants(parameters, result);
addAllClasses(parameters, result, inheritors);
final PsiElement parent = position.getParent();
if (parent instanceof PsiReferenceExpression
&& !((PsiReferenceExpression) parent).isQualified()
&& parameters.isExtendedCompletion()
&& StringUtil.isNotEmpty(matcher.getPrefix())) {
new JavaStaticMemberProcessor(parameters).processStaticMethodsGlobally(matcher, result);
}
result.stopHere();
}