@Nullable
  public static Commenter getCommenter(
      final PsiFile file,
      final Editor editor,
      final Language lineStartLanguage,
      final Language lineEndLanguage) {

    final FileViewProvider viewProvider = file.getViewProvider();

    for (MultipleLangCommentProvider provider :
        MultipleLangCommentProvider.EP_NAME.getExtensions()) {
      if (provider.canProcess(file, viewProvider)) {
        return provider.getLineCommenter(file, editor, lineStartLanguage, lineEndLanguage);
      }
    }

    final Language fileLanguage = file.getLanguage();
    Language lang =
        lineStartLanguage == null
                || LanguageCommenters.INSTANCE.forLanguage(lineStartLanguage) == null
                || fileLanguage.getBaseLanguage()
                    == lineStartLanguage // file language is a more specific dialect of the line
            // language
            ? fileLanguage
            : lineStartLanguage;

    if (viewProvider instanceof TemplateLanguageFileViewProvider
        && lang == ((TemplateLanguageFileViewProvider) viewProvider).getTemplateDataLanguage()) {
      lang = viewProvider.getBaseLanguage();
    }

    return LanguageCommenters.INSTANCE.forLanguage(lang);
  }
  private void updateEditorText() {
    disposeNonTextEditor();

    final PsiElement elt = myElements[myIndex].getNavigationElement();
    Project project = elt.getProject();
    PsiFile psiFile = getContainingFile(elt);
    final VirtualFile vFile = psiFile.getVirtualFile();
    if (vFile == null) return;
    final FileEditorProvider[] providers =
        FileEditorProviderManager.getInstance().getProviders(project, vFile);
    for (FileEditorProvider provider : providers) {
      if (provider instanceof TextEditorProvider) {
        updateTextElement(elt);
        myBinarySwitch.show(myViewingPanel, TEXT_PAGE_KEY);
        break;
      } else if (provider.accept(project, vFile)) {
        myCurrentNonTextEditorProvider = provider;
        myNonTextEditor = myCurrentNonTextEditorProvider.createEditor(project, vFile);
        myBinaryPanel.removeAll();
        myBinaryPanel.add(myNonTextEditor.getComponent());
        myBinarySwitch.show(myViewingPanel, BINARY_PAGE_KEY);
        break;
      }
    }
  }
  protected void restoreState(@NotNull final V psiField) {
    if (!ReadonlyStatusHandler.ensureDocumentWritable(
        myProject, InjectedLanguageUtil.getTopLevelEditor(myEditor).getDocument())) return;
    ApplicationManager.getApplication()
        .runWriteAction(
            () -> {
              final PsiFile containingFile = psiField.getContainingFile();
              final RangeMarker exprMarker = getExprMarker();
              if (exprMarker != null) {
                myExpr = restoreExpression(containingFile, psiField, exprMarker, myExprText);
              }

              if (myLocalMarker != null) {
                final PsiElement refVariableElement =
                    containingFile.findElementAt(myLocalMarker.getStartOffset());
                if (refVariableElement != null) {
                  final PsiElement parent = refVariableElement.getParent();
                  if (parent instanceof PsiNamedElement) {
                    ((PsiNamedElement) parent).setName(myLocalName);
                  }
                }

                final V localVariable = getLocalVariable();
                if (localVariable != null && localVariable.isPhysical()) {
                  myLocalVariable = localVariable;
                  final PsiElement nameIdentifier = localVariable.getNameIdentifier();
                  if (nameIdentifier != null) {
                    myLocalMarker = createMarker(nameIdentifier);
                  }
                }
              }
              final List<RangeMarker> occurrenceMarkers = getOccurrenceMarkers();
              for (int i = 0, occurrenceMarkersSize = occurrenceMarkers.size();
                  i < occurrenceMarkersSize;
                  i++) {
                RangeMarker marker = occurrenceMarkers.get(i);
                if (getExprMarker() != null
                    && marker.getStartOffset() == getExprMarker().getStartOffset()
                    && myExpr != null) {
                  myOccurrences[i] = myExpr;
                  continue;
                }
                final E psiExpression =
                    restoreExpression(
                        containingFile,
                        psiField,
                        marker,
                        getLocalVariable() != null ? myLocalName : myExprText);
                if (psiExpression != null) {
                  myOccurrences[i] = psiExpression;
                }
              }

              if (myExpr != null && myExpr.isPhysical()) {
                myExprMarker = createMarker(myExpr);
              }
              myOccurrenceMarkers = null;
              deleteTemplateField(psiField);
            });
  }
  public void commentRange(
      int startOffset,
      int endOffset,
      String commentPrefix,
      String commentSuffix,
      Commenter commenter) {
    final CharSequence chars = myDocument.getCharsSequence();
    LogicalPosition caretPosition = myCaret.getLogicalPosition();

    if (startOffset == 0 || chars.charAt(startOffset - 1) == '\n') {
      if (endOffset == myDocument.getTextLength()
          || endOffset > 0 && chars.charAt(endOffset - 1) == '\n') {
        CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(myProject);
        CommonCodeStyleSettings settings =
            CodeStyleSettingsManager.getSettings(myProject).getCommonSettings(myFile.getLanguage());
        String space;
        if (!settings.BLOCK_COMMENT_AT_FIRST_COLUMN) {
          final FileType fileType = myFile.getFileType();
          int line1 = myEditor.offsetToLogicalPosition(startOffset).line;
          int line2 = myEditor.offsetToLogicalPosition(endOffset - 1).line;
          Indent minIndent =
              CommentUtil.getMinLineIndent(myProject, myDocument, line1, line2, fileType);
          if (minIndent == null) {
            minIndent = codeStyleManager.zeroIndent();
          }
          space = codeStyleManager.fillIndent(minIndent, fileType);
        } else {
          space = "";
        }
        final StringBuilder nestingPrefix = new StringBuilder(space).append(commentPrefix);
        if (!commentPrefix.endsWith("\n")) {
          nestingPrefix.append("\n");
        }
        final StringBuilder nestingSuffix = new StringBuilder(space);
        nestingSuffix.append(
            commentSuffix.startsWith("\n") ? commentSuffix.substring(1) : commentSuffix);
        nestingSuffix.append("\n");
        TextRange range =
            insertNestedComments(
                startOffset,
                endOffset,
                nestingPrefix.toString(),
                nestingSuffix.toString(),
                commenter);
        myCaret.setSelection(range.getStartOffset(), range.getEndOffset());
        LogicalPosition pos = new LogicalPosition(caretPosition.line + 1, caretPosition.column);
        myCaret.moveToLogicalPosition(pos);
        return;
      }
    }

    TextRange range =
        insertNestedComments(startOffset, endOffset, commentPrefix, commentSuffix, commenter);
    myCaret.setSelection(range.getStartOffset(), range.getEndOffset());
    LogicalPosition pos =
        new LogicalPosition(caretPosition.line, caretPosition.column + commentPrefix.length());
    myCaret.moveToLogicalPosition(pos);
  }
  @Nullable
  private static Commenter findCommenter(PsiFile file, Editor editor, Caret caret) {
    final FileType fileType = file.getFileType();
    if (fileType instanceof AbstractFileType) {
      return ((AbstractFileType) fileType).getCommenter();
    }

    Language lang = PsiUtilBase.getLanguageInEditor(caret, file.getProject());

    return getCommenter(file, editor, lang, lang);
  }
    @Nullable
    private PsiComment createComment(final CharSequence buffer, final CodeInsightSettings settings)
        throws IncorrectOperationException {
      myDocument.insertString(myOffset, buffer);

      PsiDocumentManager.getInstance(getProject()).commitAllDocuments();
      CodeStyleManager.getInstance(getProject())
          .adjustLineIndent(myFile, myOffset + buffer.length() - 2);

      PsiComment comment =
          PsiTreeUtil.getNonStrictParentOfType(myFile.findElementAt(myOffset), PsiComment.class);

      comment = createJavaDocStub(settings, comment, getProject());
      if (comment == null) {
        return null;
      }

      CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(getProject());
      CodeStyleSettings codeStyleSettings = CodeStyleSettingsManager.getSettings(getProject());
      boolean old = codeStyleSettings.ENABLE_JAVADOC_FORMATTING;
      codeStyleSettings.ENABLE_JAVADOC_FORMATTING = false;

      try {
        comment = (PsiComment) codeStyleManager.reformat(comment);
      } finally {
        codeStyleSettings.ENABLE_JAVADOC_FORMATTING = old;
      }
      PsiElement next = comment.getNextSibling();
      if (next == null && comment.getParent().getClass() == comment.getClass()) {
        next =
            comment
                .getParent()
                .getNextSibling(); // expanding chameleon comment produces comment under comment
      }
      if (next != null) {
        next =
            myFile.findElementAt(
                next.getTextRange().getStartOffset()); // maybe switch to another tree
      }
      if (next != null
          && (!FormatterUtil.containsWhiteSpacesOnly(next.getNode())
              || !next.getText().contains(LINE_SEPARATOR))) {
        int lineBreakOffset = comment.getTextRange().getEndOffset();
        myDocument.insertString(lineBreakOffset, LINE_SEPARATOR);
        PsiDocumentManager.getInstance(getProject()).commitAllDocuments();
        codeStyleManager.adjustLineIndent(myFile, lineBreakOffset + 1);
        comment =
            PsiTreeUtil.getNonStrictParentOfType(myFile.findElementAt(myOffset), PsiComment.class);
      }
      return comment;
    }
 @Override
 public void actionPerformed(AnActionEvent e) {
   PsiElement element = myElements[myIndex];
   PsiElement navigationElement = element.getNavigationElement();
   PsiFile file = getContainingFile(navigationElement);
   if (file == null) return;
   VirtualFile virtualFile = file.getVirtualFile();
   if (virtualFile == null) return;
   Project project = element.getProject();
   FileEditorManagerEx fileEditorManager = FileEditorManagerEx.getInstanceEx(project);
   OpenFileDescriptor descriptor =
       new OpenFileDescriptor(project, virtualFile, navigationElement.getTextOffset());
   fileEditorManager.openTextEditor(descriptor, myFocusEditor);
 }
 public boolean isValid() {
   boolean valid =
       myNewVirtualFile.isValid()
           && (myAltFullRange == null && myInjectedFile.isValid()
               || myAltFullRange != null && myAltFullRange.isValid());
   if (valid) {
     for (Trinity<RangeMarker, RangeMarker, SmartPsiElementPointer> t : myMarkers) {
       if (!t.first.isValid() || !t.second.isValid() || t.third.getElement() == null) {
         valid = false;
         break;
       }
     }
   }
   return valid;
 }
 public V getLocalVariable() {
   if (myLocalVariable != null && myLocalVariable.isValid()) {
     return myLocalVariable;
   }
   if (myLocalMarker != null) {
     V variable = getVariable();
     PsiFile containingFile;
     if (variable != null) {
       containingFile = variable.getContainingFile();
     } else {
       containingFile =
           PsiDocumentManager.getInstance(myProject).getPsiFile(myEditor.getDocument());
     }
     PsiNameIdentifierOwner identifierOwner =
         PsiTreeUtil.getParentOfType(
             containingFile.findElementAt(myLocalMarker.getStartOffset()),
             PsiNameIdentifierOwner.class,
             false);
     return identifierOwner != null && identifierOwner.getClass() == myLocalVariable.getClass()
         ? (V) identifierOwner
         : null;
   }
   return myLocalVariable;
 }
  @Nullable
  private PsiElement findCommentAtCaret() {
    int offset = myCaret.getOffset();
    TextRange range = new TextRange(myCaret.getSelectionStart(), myCaret.getSelectionEnd());
    if (offset == range.getEndOffset()) {
      offset--;
    }
    if (offset <= range.getStartOffset()) {
      offset++;
    }
    PsiElement elt = myFile.getViewProvider().findElementAt(offset);
    if (elt == null) return null;
    PsiElement comment = PsiTreeUtil.getParentOfType(elt, PsiComment.class, false);
    if (comment == null || myCaret.hasSelection() && !range.contains(comment.getTextRange())) {
      return null;
    }

    return comment;
  }
 private boolean testSelectionForNonComments() {
   if (!myCaret.hasSelection()) {
     return true;
   }
   TextRange range = new TextRange(myCaret.getSelectionStart(), myCaret.getSelectionEnd() - 1);
   for (PsiElement element = myFile.findElementAt(range.getStartOffset());
       element != null && range.intersects(element.getTextRange());
       element = element.getNextSibling()) {
     if (element instanceof OuterLanguageElement) {
       if (!isInjectedWhiteSpace(range, (OuterLanguageElement) element)) {
         return false;
       }
     } else {
       if (!isWhiteSpaceOrComment(element, range)) {
         return false;
       }
     }
   }
   return true;
 }
    @Nullable
    private PsiComment createJavaDocStub(
        final CodeInsightSettings settings, final PsiComment comment, final Project project) {
      if (settings.JAVADOC_STUB_ON_ENTER) {
        final DocumentationProvider langDocumentationProvider =
            LanguageDocumentation.INSTANCE.forLanguage(comment.getParent().getLanguage());

        @Nullable final CodeDocumentationProvider docProvider;
        if (langDocumentationProvider instanceof CompositeDocumentationProvider) {
          docProvider =
              ((CompositeDocumentationProvider) langDocumentationProvider)
                  .getFirstCodeDocumentationProvider();
        } else {
          docProvider =
              langDocumentationProvider instanceof CodeDocumentationProvider
                  ? (CodeDocumentationProvider) langDocumentationProvider
                  : null;
        }

        if (docProvider != null) {
          if (docProvider.findExistingDocComment(comment) != comment) return comment;
          String docStub = docProvider.generateDocumentationContentStub(comment);

          if (docStub != null && docStub.length() != 0) {
            myOffset =
                CharArrayUtil.shiftForwardUntil(
                    myDocument.getCharsSequence(), myOffset, LINE_SEPARATOR);
            myOffset =
                CharArrayUtil.shiftForward(myDocument.getCharsSequence(), myOffset, LINE_SEPARATOR);
            myDocument.insertString(myOffset, docStub);
          }
        }

        PsiDocumentManager.getInstance(project).commitAllDocuments();
        return PsiTreeUtil.getNonStrictParentOfType(
            myFile.findElementAt(myOffset), PsiComment.class);
      }
      return comment;
    }
 private void commitToOriginal(final DocumentEvent e) {
   VirtualFile origVirtualFile = PsiUtilCore.getVirtualFile(myNewFile.getContext());
   myCommittingToOriginal = true;
   try {
     if (origVirtualFile == null
         || !ReadonlyStatusHandler.getInstance(myProject)
             .ensureFilesWritable(origVirtualFile)
             .hasReadonlyFiles()) {
       PostprocessReformattingAspect.getInstance(myProject)
           .disablePostprocessFormattingInside(
               () -> {
                 if (myAltFullRange != null) {
                   altCommitToOriginal(e);
                   return;
                 }
                 commitToOriginalInner();
               });
       PsiDocumentManager.getInstance(myProject)
           .doPostponedOperationsAndUnblockDocument(myOrigDocument);
     }
   } finally {
     myCommittingToOriginal = false;
   }
 }
 private static PsiFile getContainingFile(final PsiElement elt) {
   PsiFile psiFile = elt.getContainingFile();
   if (psiFile == null) return null;
   return psiFile.getOriginalFile();
 }
  private static boolean isCommentComplete(
      PsiComment comment, CodeDocumentationAwareCommenter commenter, Editor editor) {
    for (CommentCompleteHandler handler :
        Extensions.getExtensions(CommentCompleteHandler.EP_NAME)) {
      if (handler.isApplicable(comment, commenter)) {
        return handler.isCommentComplete(comment, commenter, editor);
      }
    }

    String commentText = comment.getText();
    final boolean docComment = isDocComment(comment, commenter);
    final String expectedCommentEnd =
        docComment ? commenter.getDocumentationCommentSuffix() : commenter.getBlockCommentSuffix();
    if (!commentText.endsWith(expectedCommentEnd)) return false;

    final PsiFile containingFile = comment.getContainingFile();
    final Language language = containingFile.getLanguage();
    ParserDefinition parserDefinition = LanguageParserDefinitions.INSTANCE.forLanguage(language);
    if (parserDefinition == null) {
      return true;
    }
    Lexer lexer = parserDefinition.createLexer(containingFile.getProject());
    final String commentPrefix =
        docComment ? commenter.getDocumentationCommentPrefix() : commenter.getBlockCommentPrefix();
    lexer.start(
        commentText, commentPrefix == null ? 0 : commentPrefix.length(), commentText.length());
    QuoteHandler fileTypeHandler = TypedHandler.getQuoteHandler(containingFile, editor);
    JavaLikeQuoteHandler javaLikeQuoteHandler =
        fileTypeHandler instanceof JavaLikeQuoteHandler
            ? (JavaLikeQuoteHandler) fileTypeHandler
            : null;

    while (true) {
      IElementType tokenType = lexer.getTokenType();
      if (tokenType == null) {
        return false;
      }

      if (javaLikeQuoteHandler != null
          && javaLikeQuoteHandler.getStringTokenTypes() != null
          && javaLikeQuoteHandler.getStringTokenTypes().contains(tokenType)) {
        String text = commentText.substring(lexer.getTokenStart(), lexer.getTokenEnd());
        int endOffset = comment.getTextRange().getEndOffset();

        if (text.endsWith(expectedCommentEnd)
            && endOffset < containingFile.getTextLength()
            && containingFile.getText().charAt(endOffset) == '\n') {
          return true;
        }
      }
      if (tokenType == commenter.getDocumentationCommentTokenType()
          || tokenType == commenter.getBlockCommentTokenType()) {
        return false;
      }
      if (tokenType == commenter.getLineCommentTokenType()
          && lexer.getTokenText().contains(commentPrefix)) {
        return false;
      }
      if (lexer.getTokenEnd() == commentText.length()) {
        if (tokenType == commenter.getLineCommentTokenType()) {
          String prefix = commenter.getLineCommentPrefix();
          lexer.start(
              commentText,
              lexer.getTokenStart() + (prefix == null ? 0 : prefix.length()),
              commentText.length());
          lexer.advance();
          continue;
        } else if (isInvalidPsi(comment)) {
          return false;
        }
        return true;
      }
      lexer.advance();
    }
  }
 private static Icon getIconForFile(PsiFile psiFile) {
   return psiFile.getNavigationElement().getIcon(0);
 }
 public void navigate(int injectedOffset) {
   if (myAction.isShowInBalloon()) {
     final JComponent component = myAction.createBalloonComponent(myNewFile);
     if (component != null) {
       final Balloon balloon =
           JBPopupFactory.getInstance()
               .createBalloonBuilder(component)
               .setShadow(true)
               .setAnimationCycle(0)
               .setHideOnClickOutside(true)
               .setHideOnKeyOutside(true)
               .setHideOnAction(false)
               .setFillColor(UIUtil.getControlColor())
               .createBalloon();
       new AnAction() {
         @Override
         public void actionPerformed(AnActionEvent e) {
           balloon.hide();
         }
       }.registerCustomShortcutSet(CommonShortcuts.ESCAPE, component);
       Disposer.register(myNewFile.getProject(), balloon);
       final Balloon.Position position = QuickEditAction.getBalloonPosition(myEditor);
       RelativePoint point = JBPopupFactory.getInstance().guessBestPopupLocation(myEditor);
       if (position == Balloon.Position.above) {
         final Point p = point.getPoint();
         point =
             new RelativePoint(
                 point.getComponent(), new Point(p.x, p.y - myEditor.getLineHeight()));
       }
       balloon.show(point, position);
     }
   } else {
     final FileEditorManagerEx fileEditorManager = FileEditorManagerEx.getInstanceEx(myProject);
     final FileEditor[] editors = fileEditorManager.getEditors(myNewVirtualFile);
     if (editors.length == 0) {
       final EditorWindow curWindow = fileEditorManager.getCurrentWindow();
       mySplittedWindow =
           curWindow.split(SwingConstants.HORIZONTAL, false, myNewVirtualFile, true);
     }
     Editor editor =
         fileEditorManager.openTextEditor(
             new OpenFileDescriptor(myProject, myNewVirtualFile, injectedOffset), true);
     // fold missing values
     if (editor != null) {
       editor.putUserData(QuickEditAction.QUICK_EDIT_HANDLER, this);
       final FoldingModel foldingModel = editor.getFoldingModel();
       foldingModel.runBatchFoldingOperation(
           () -> {
             for (RangeMarker o :
                 ContainerUtil.reverse(((DocumentEx) myNewDocument).getGuardedBlocks())) {
               String replacement = o.getUserData(REPLACEMENT_KEY);
               if (StringUtil.isEmpty(replacement)) continue;
               FoldRegion region =
                   foldingModel.addFoldRegion(o.getStartOffset(), o.getEndOffset(), replacement);
               if (region != null) region.setExpanded(false);
             }
           });
     }
     SwingUtilities.invokeLater(
         () -> myEditor.getScrollingModel().scrollToCaret(ScrollType.MAKE_VISIBLE));
   }
 }
    @Override
    public void run() {
      CaretModel caretModel = myEditor.getCaretModel();
      try {
        final CharSequence chars = myDocument.getCharsSequence();
        int i = CharArrayUtil.shiftBackwardUntil(chars, myOffset - 1, LINE_SEPARATOR) - 1;
        i = CharArrayUtil.shiftBackwardUntil(chars, i, LINE_SEPARATOR) + 1;
        if (i < 0) i = 0;
        int lineStart = CharArrayUtil.shiftForward(chars, i, " \t");
        CodeDocumentationUtil.CommentContext commentContext =
            CodeDocumentationUtil.tryParseCommentContext(myFile, chars, myOffset, lineStart);

        PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(getProject());
        if (commentContext.docStart) {
          PsiElement element = myFile.findElementAt(commentContext.lineStart);
          final String text = element.getText();
          final PsiElement parent = element.getParent();

          if (text.equals(commentContext.commenter.getDocumentationCommentPrefix())
                  && isDocComment(parent, commentContext.commenter)
              || text.startsWith(commentContext.commenter.getDocumentationCommentPrefix())
                  && element instanceof PsiComment) {
            PsiComment comment =
                isDocComment(parent, commentContext.commenter)
                    ? (PsiComment) parent
                    : (PsiComment) element;
            int commentEnd = comment.getTextRange().getEndOffset();

            if (myOffset >= commentEnd) {
              commentContext.docStart = false;
            } else {
              if (isCommentComplete(comment, commentContext.commenter, myEditor)) {
                if (myOffset >= commentEnd) {
                  commentContext.docAsterisk = false;
                  commentContext.docStart = false;
                } else {
                  commentContext.docAsterisk = true;
                  commentContext.docStart = false;
                }
              } else {
                generateJavadoc(commentContext.commenter);
              }
            }
          } else {
            commentContext.docStart = false;
          }
        } else if (commentContext.cStyleStart) {
          PsiElement element = myFile.findElementAt(commentContext.lineStart);
          if (element instanceof PsiComment
              && commentContext.commenter.getBlockCommentTokenType()
                  == ((PsiComment) element).getTokenType()) {
            final PsiComment comment = (PsiComment) element;
            int commentEnd = comment.getTextRange().getEndOffset();
            if (myOffset >= commentEnd && myOffset < myFile.getTextRange().getEndOffset()) {
              commentContext.docStart = false;
            } else {
              if (isCommentComplete(comment, commentContext.commenter, myEditor)) {
                if (myOffset >= commentEnd) {
                  commentContext.docAsterisk = false;
                  commentContext.docStart = false;
                } else {
                  commentContext.docAsterisk = true;
                  commentContext.docStart = false;
                }
              } else {
                final int currentEndOfLine = CharArrayUtil.shiftForwardUntil(chars, myOffset, "\n");
                myDocument.insertString(
                    currentEndOfLine, " " + commentContext.commenter.getBlockCommentSuffix());
                int lstart = CharArrayUtil.shiftBackwardUntil(chars, myOffset, "\n");
                myDocument.insertString(currentEndOfLine, chars.subSequence(lstart, myOffset));
                psiDocumentManager.commitDocument(myDocument);
              }
            }
          } else {
            commentContext.docStart = false;
          }
        }

        String indentInsideJavadoc = null;
        if (myOffset < myDocument.getTextLength()) {
          final int line = myDocument.getLineNumber(myOffset);
          if (line > 0 && (commentContext.docAsterisk || commentContext.docStart)) {
            indentInsideJavadoc =
                CodeDocumentationUtil.getIndentInsideJavadoc(
                    myDocument, myDocument.getLineStartOffset(line - 1));
          }
        }

        if (commentContext.docAsterisk) {
          commentContext.docAsterisk =
              insertDocAsterisk(
                  commentContext.lineStart,
                  commentContext.docAsterisk,
                  !StringUtil.isEmpty(indentInsideJavadoc),
                  commentContext.commenter);
        }

        boolean docIndentApplied = false;
        CodeInsightSettings codeInsightSettings = CodeInsightSettings.getInstance();
        if (codeInsightSettings.SMART_INDENT_ON_ENTER
            || myForceIndent
            || commentContext.docStart
            || commentContext.docAsterisk
            || commentContext.slashSlash) {
          final CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(getProject());
          myOffset = codeStyleManager.adjustLineIndent(myFile, myOffset);
          psiDocumentManager.commitAllDocuments();

          if (!StringUtil.isEmpty(indentInsideJavadoc) && myOffset < myDocument.getTextLength()) {
            myDocument.insertString(myOffset + 1, indentInsideJavadoc);
            myOffset += indentInsideJavadoc.length();
            docIndentApplied = true;
          }

          if (myForceIndent && indentInsideJavadoc != null) {
            int indentSize =
                CodeStyleSettingsManager.getSettings(myProject).getIndentSize(myFile.getFileType());
            myDocument.insertString(myOffset + 1, StringUtil.repeatSymbol(' ', indentSize));
            myCaretAdvance += indentSize;
          }
        }

        if ((commentContext.docAsterisk || commentContext.docStart || commentContext.slashSlash)
            && !docIndentApplied) {
          if (myInsertSpace) {
            if (myOffset == myDocument.getTextLength()) {
              myDocument.insertString(myOffset, " ");
            }
            myDocument.insertString(myOffset + 1, " ");
          }

          final char c = myDocument.getCharsSequence().charAt(myOffset);
          if (c != '\n') {
            myOffset += 1;
          }
        }

        if ((commentContext.docAsterisk || commentContext.slashSlash) && !commentContext.docStart) {
          myCaretAdvance +=
              commentContext.slashSlash
                  ? commentContext.commenter.getLineCommentPrefix().length()
                  : 1;
        }
      } catch (IncorrectOperationException e) {
        LOG.error(e);
      }

      myOffset = Math.min(myOffset, myDocument.getTextLength());
      caretModel.moveToOffset(myOffset);
      myEditor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
      myEditor.getSelectionModel().removeSelection();
      if (myCaretAdvance != 0) {
        LogicalPosition caretPosition = caretModel.getLogicalPosition();
        LogicalPosition pos =
            new LogicalPosition(caretPosition.line, caretPosition.column + myCaretAdvance);
        caretModel.moveToLogicalPosition(pos);
      }
    }
  QuickEditHandler(
      Project project,
      @NotNull PsiFile injectedFile,
      final PsiFile origFile,
      Editor editor,
      QuickEditAction action) {
    myProject = project;
    myEditor = editor;
    myAction = action;
    myOrigDocument = editor.getDocument();
    Place shreds = InjectedLanguageUtil.getShreds(injectedFile);
    FileType fileType = injectedFile.getFileType();
    Language language = injectedFile.getLanguage();
    PsiLanguageInjectionHost.Shred firstShred = ContainerUtil.getFirstItem(shreds);

    PsiFileFactory factory = PsiFileFactory.getInstance(project);
    String text = InjectedLanguageManager.getInstance(project).getUnescapedText(injectedFile);
    String newFileName =
        StringUtil.notNullize(language.getDisplayName(), "Injected")
            + " Fragment "
            + "("
            + origFile.getName()
            + ":"
            + firstShred.getHost().getTextRange().getStartOffset()
            + ")"
            + "."
            + fileType.getDefaultExtension();

    // preserve \r\n as it is done in MultiHostRegistrarImpl
    myNewFile = factory.createFileFromText(newFileName, language, text, true, false);
    myNewVirtualFile = ObjectUtils.assertNotNull((LightVirtualFile) myNewFile.getVirtualFile());
    myNewVirtualFile.setOriginalFile(origFile.getVirtualFile());

    assert myNewFile != null : "PSI file is null";
    assert myNewFile.getTextLength() == myNewVirtualFile.getContent().length()
        : "PSI / Virtual file text mismatch";

    myNewVirtualFile.setOriginalFile(origFile.getVirtualFile());
    // suppress possible errors as in injected mode
    myNewFile.putUserData(
        InjectedLanguageUtil.FRANKENSTEIN_INJECTION,
        injectedFile.getUserData(InjectedLanguageUtil.FRANKENSTEIN_INJECTION));
    myNewFile.putUserData(FileContextUtil.INJECTED_IN_ELEMENT, shreds.getHostPointer());
    myNewDocument = PsiDocumentManager.getInstance(project).getDocument(myNewFile);
    assert myNewDocument != null;
    EditorActionManager.getInstance()
        .setReadonlyFragmentModificationHandler(myNewDocument, new MyQuietHandler());
    myOrigCreationStamp =
        myOrigDocument.getModificationStamp(); // store creation stamp for UNDO tracking
    myOrigDocument.addDocumentListener(this, this);
    myNewDocument.addDocumentListener(this, this);
    EditorFactory editorFactory = ObjectUtils.assertNotNull(EditorFactory.getInstance());
    // not FileEditorManager listener because of RegExp checker and alike
    editorFactory.addEditorFactoryListener(
        new EditorFactoryAdapter() {
          int useCount;

          @Override
          public void editorCreated(@NotNull EditorFactoryEvent event) {
            if (event.getEditor().getDocument() != myNewDocument) return;
            useCount++;
          }

          @Override
          public void editorReleased(@NotNull EditorFactoryEvent event) {
            if (event.getEditor().getDocument() != myNewDocument) return;
            if (--useCount > 0) return;
            if (Boolean.TRUE.equals(
                myNewVirtualFile.getUserData(FileEditorManagerImpl.CLOSING_TO_REOPEN))) return;

            Disposer.dispose(QuickEditHandler.this);
          }
        },
        this);

    if ("JAVA".equals(firstShred.getHost().getLanguage().getID())) {
      PsiLanguageInjectionHost.Shred lastShred = ContainerUtil.getLastItem(shreds);
      myAltFullRange =
          myOrigDocument.createRangeMarker(
              firstShred.getHostRangeMarker().getStartOffset(),
              lastShred.getHostRangeMarker().getEndOffset());
      myAltFullRange.setGreedyToLeft(true);
      myAltFullRange.setGreedyToRight(true);

      initGuardedBlocks(shreds);
      myInjectedFile = null;
    } else {
      initMarkers(shreds);
      myAltFullRange = null;
      myInjectedFile = injectedFile;
    }
  }
    private boolean insertDocAsterisk(
        int lineStart,
        boolean docAsterisk,
        boolean previousLineIndentUsed,
        CodeDocumentationAwareCommenter commenter) {
      PsiElement atLineStart = myFile.findElementAt(lineStart);
      if (atLineStart == null) return false;

      final String linePrefix = commenter.getDocumentationCommentLinePrefix();
      final String docPrefix = commenter.getDocumentationCommentPrefix();

      final String text = atLineStart.getText();
      final TextRange textRange = atLineStart.getTextRange();

      if (text.equals(linePrefix)
          || text.equals(docPrefix)
          || docPrefix != null
              && text.regionMatches(
                  lineStart - textRange.getStartOffset(), docPrefix, 0, docPrefix.length())
          || linePrefix != null
              && text.regionMatches(
                  lineStart - textRange.getStartOffset(), linePrefix, 0, linePrefix.length())) {
        PsiElement element = myFile.findElementAt(myOffset);
        if (element == null) return false;

        PsiComment comment =
            element instanceof PsiComment
                ? (PsiComment) element
                : PsiTreeUtil.getParentOfType(element, PsiComment.class, false);
        if (comment != null) {
          int commentEnd = comment.getTextRange().getEndOffset();
          if (myOffset >= commentEnd) {
            docAsterisk = false;
          } else {
            removeTrailingSpaces(myDocument, myOffset);
            String toInsert =
                previousLineIndentUsed
                    ? "*"
                    : CodeDocumentationUtil.createDocCommentLine("", getProject(), commenter);
            myDocument.insertString(myOffset, toInsert);
            PsiDocumentManager.getInstance(getProject()).commitAllDocuments();
          }
        } else {
          docAsterisk = false;
        }
      } else if (linePrefix != null
          && atLineStart instanceof PsiComment
          && ((PsiComment) atLineStart).getTokenType() == commenter.getBlockCommentTokenType()) {
        // Check if C-Style comment already uses asterisks.
        boolean usesAstersk = false;
        int commentLine = myDocument.getLineNumber(textRange.getStartOffset());
        if (commentLine < myDocument.getLineCount() - 1 && textRange.getEndOffset() >= myOffset) {
          int nextLineOffset = myDocument.getLineStartOffset(commentLine + 1);
          if (nextLineOffset < textRange.getEndOffset()) {
            final CharSequence chars = myDocument.getCharsSequence();
            nextLineOffset = CharArrayUtil.shiftForward(chars, nextLineOffset, " \t");
            usesAstersk = CharArrayUtil.regionMatches(chars, nextLineOffset, linePrefix);
          }
        }
        if (usesAstersk) {
          removeTrailingSpaces(myDocument, myOffset);
          myDocument.insertString(myOffset, linePrefix + " ");
          PsiDocumentManager.getInstance(getProject()).commitAllDocuments();
        }
        docAsterisk = usesAstersk;
      } else {
        docAsterisk = false;
      }
      return docAsterisk;
    }
 private Project getProject() {
   return myFile.getProject();
 }
  @Nullable
  private TextRange findCommentedRange(final Commenter commenter) {
    final CharSequence text = myDocument.getCharsSequence();
    final FileType fileType = myFile.getFileType();
    if (fileType instanceof CustomSyntaxTableFileType) {
      Lexer lexer =
          new CustomFileTypeLexer(((CustomSyntaxTableFileType) fileType).getSyntaxTable());
      final int caretOffset = myCaret.getOffset();
      int commentStart =
          CharArrayUtil.lastIndexOf(text, commenter.getBlockCommentPrefix(), caretOffset);
      if (commentStart == -1) return null;

      lexer.start(text, commentStart, text.length());
      if (lexer.getTokenType() == CustomHighlighterTokenType.MULTI_LINE_COMMENT
          && lexer.getTokenEnd() >= caretOffset) {
        return new TextRange(commentStart, lexer.getTokenEnd());
      }
      return null;
    }

    final String prefix;
    final String suffix;
    // Custom uncommenter is able to find commented block inside of selected text
    final String selectedText = myCaret.getSelectedText();
    if ((commenter instanceof CustomUncommenter) && selectedText != null) {
      final TextRange commentedRange =
          ((CustomUncommenter) commenter).findMaximumCommentedRange(selectedText);
      if (commentedRange == null) {
        return null;
      }
      // Uncommenter returns range relative to text start, so we need to shift it to make abosolute.
      return commentedRange.shiftRight(myCaret.getSelectionStart());
    }

    if (commenter instanceof SelfManagingCommenter) {
      SelfManagingCommenter selfManagingCommenter = (SelfManagingCommenter) commenter;

      prefix =
          selfManagingCommenter.getBlockCommentPrefix(
              myCaret.getSelectionStart(), myDocument, mySelfManagedCommenterData);
      suffix =
          selfManagingCommenter.getBlockCommentSuffix(
              myCaret.getSelectionEnd(), myDocument, mySelfManagedCommenterData);
    } else {
      prefix = trim(commenter.getBlockCommentPrefix());
      suffix = trim(commenter.getBlockCommentSuffix());
    }
    if (prefix == null || suffix == null) return null;

    TextRange commentedRange;

    if (commenter instanceof SelfManagingCommenter) {
      commentedRange =
          ((SelfManagingCommenter) commenter)
              .getBlockCommentRange(
                  myCaret.getSelectionStart(),
                  myCaret.getSelectionEnd(),
                  myDocument,
                  mySelfManagedCommenterData);
    } else {
      if (!testSelectionForNonComments()) {
        return null;
      }

      commentedRange = getSelectedComments(text, prefix, suffix);
    }
    if (commentedRange == null) {
      PsiElement comment = findCommentAtCaret();
      if (comment != null) {

        String commentText = comment.getText();
        if (commentText.startsWith(prefix) && commentText.endsWith(suffix)) {
          commentedRange = comment.getTextRange();
        }
      }
    }
    return commentedRange;
  }