/**
 * We have to override {@link com.intellij.formatting.templateLanguages.TemplateLanguageFormattingModelBuilder#createModel}
 * since after we delegate to some templated languages, those languages (xml/html for sure, potentially others)
 * delegate right back to us to format the DustTypes.OUTER_TYPE token we tell them to ignore,
 * causing an stack-overflowing loop.
 */
@NotNull
public FormattingModel createModel(PsiElement element, CodeStyleSettings settings) {

  final PsiFile file = element.getContainingFile();
  Block rootBlock;

  ASTNode node = element.getNode();

  if (node.getElementType() == DustFileViewProvider.OUTER_TYPE) {
    // If we're looking at a DustTypes.HTML element, then we've been invoked by our templated
    // language.  Make a dummy block to allow that formatter to continue
    return new SimpleTemplateLanguageFormattingModelBuilder().createModel(element, settings);
  } else {
    rootBlock = getRootBlock(file, file.getViewProvider(), settings);
  }

  return new DocumentBasedFormattingModel(rootBlock, element.getProject(), settings, file.getFileType(), file);
}
 

@NotNull
public FormattingModel createModel(PsiElement element, CodeStyleSettings settings) {
  final PsiFile file = element.getContainingFile();

  if (element.getNode().getElementType() == SoyTypes.OTHER) {
    return new SimpleTemplateLanguageFormattingModelBuilder().createModel(element, settings);
  } else {
    return new DocumentBasedFormattingModel(
        getRootBlock(file, file.getViewProvider(), settings),
        element.getProject(),
        settings,
        file.getFileType(),
        file);
  }
}
 

@Override
@Nonnull
public FormattingModel createModel(final PsiElement element, final CodeStyleSettings settings) {
  if (element instanceof PsiFile) {
    final FileViewProvider viewProvider = ((PsiFile)element).getViewProvider();
    if (viewProvider instanceof TemplateLanguageFileViewProvider) {
      final Language language = ((TemplateLanguageFileViewProvider)viewProvider).getTemplateDataLanguage();
      FormattingModelBuilder builder = LanguageFormatting.INSTANCE.forLanguage(language);
      if (builder != null) {
        return builder.createModel(viewProvider.getPsi(language), settings);
      }
    }
  }

  final PsiFile file = element.getContainingFile();
  return new DocumentBasedFormattingModel(new AbstractBlock(element.getNode(), Wrap.createWrap(WrapType.NONE, false), Alignment.createAlignment()) {
    @Override
    protected List<Block> buildChildren() {
      return Collections.emptyList();
    }

    @Override
    public Spacing getSpacing(final Block child1, @Nonnull final Block child2) {
      return Spacing.getReadOnlySpacing();
    }

    @Override
    public boolean isLeaf() {
      return true;
    }
  }, element.getProject(), settings, file.getFileType(), file);
}
 

@Override
@Nonnull
public FormattingModel createModel(PsiElement element, CodeStyleSettings settings) {
  final PsiFile file = element.getContainingFile();
  Block rootBlock = getRootBlock(file, file.getViewProvider(), settings);
  return new DocumentBasedFormattingModel(rootBlock, element.getProject(), settings, file.getFileType(), file);
}