예제 #1
0
  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;
  }
  @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();
  }