private static Set<LookupElement> suggestQualifierItems( CompletionParameters parameters, PsiJavaCodeReferenceElement qualifier, ElementFilter filter) { String referenceName = qualifier.getReferenceName(); if (referenceName == null) { return Collections.emptySet(); } PrefixMatcher qMatcher = new CamelHumpMatcher(referenceName); Set<LookupElement> plainVariants = JavaSmartCompletionContributor.completeReference( qualifier, qualifier, filter, true, true, parameters, qMatcher); for (PsiClass aClass : PsiShortNamesCache.getInstance(qualifier.getProject()) .getClassesByName(referenceName, qualifier.getResolveScope())) { plainVariants.add(JavaClassNameCompletionContributor.createClassLookupItem(aClass, true)); } if (!plainVariants.isEmpty()) { return plainVariants; } final Set<LookupElement> allClasses = new LinkedHashSet<LookupElement>(); PsiElement qualifierName = qualifier.getReferenceNameElement(); if (qualifierName != null) { JavaClassNameCompletionContributor.addAllClasses( parameters.withPosition(qualifierName, qualifierName.getTextRange().getEndOffset()), true, qMatcher, new CollectConsumer<LookupElement>(allClasses)); } return allClasses; }
static List<? extends LookupElement> createLookupElements( CompletionElement completionElement, PsiJavaReference reference) { Object completion = completionElement.getElement(); assert !(completion instanceof LookupElement); if (reference instanceof PsiJavaCodeReferenceElement) { if (completion instanceof PsiMethod && ((PsiJavaCodeReferenceElement) reference).getParent() instanceof PsiImportStaticStatement) { return Collections.singletonList( JavaLookupElementBuilder.forMethod((PsiMethod) completion, PsiSubstitutor.EMPTY)); } if (completion instanceof PsiClass) { return JavaClassNameCompletionContributor.createClassLookupItems( (PsiClass) completion, JavaClassNameCompletionContributor.AFTER_NEW.accepts(reference), JavaClassNameInsertHandler.JAVA_CLASS_INSERT_HANDLER, Conditions.<PsiClass>alwaysTrue()); } } if (reference instanceof PsiMethodReferenceExpression && completion instanceof PsiMethod && ((PsiMethod) completion).isConstructor()) { return Collections.singletonList( JavaLookupElementBuilder.forMethod( (PsiMethod) completion, "new", PsiSubstitutor.EMPTY, null)); } PsiSubstitutor substitutor = completionElement.getSubstitutor(); if (substitutor == null) substitutor = PsiSubstitutor.EMPTY; if (completion instanceof PsiClass) { return Collections.singletonList( JavaClassNameCompletionContributor.createClassLookupItem((PsiClass) completion, true) .setSubstitutor(substitutor)); } if (completion instanceof PsiMethod) { return Collections.singletonList( new JavaMethodCallElement((PsiMethod) completion).setQualifierSubstitutor(substitutor)); } if (completion instanceof PsiVariable) { return Collections.singletonList( new VariableLookupItem((PsiVariable) completion).setSubstitutor(substitutor)); } return Collections.singletonList(LookupItemUtil.objectToLookupItem(completion)); }