private static void logStats(Collection<PsiFile> otherFiles, long start) {
    long time = System.currentTimeMillis() - start;

    final Multiset<String> stats = HashMultiset.create();
    for (PsiFile file : otherFiles) {
      stats.add(
          StringUtil.notNullize(file.getViewProvider().getVirtualFile().getExtension())
              .toLowerCase());
    }

    List<String> extensions = ContainerUtil.newArrayList(stats.elementSet());
    Collections.sort(
        extensions,
        new Comparator<String>() {
          @Override
          public int compare(String o1, String o2) {
            return stats.count(o2) - stats.count(o1);
          }
        });

    String message =
        "Search in "
            + otherFiles.size()
            + " files with unknown types took "
            + time
            + "ms.\n"
            + "Mapping their extensions to an existing file type (e.g. Plain Text) might speed up the search.\n"
            + "Most frequent non-indexed file extensions: ";
    for (int i = 0; i < Math.min(10, extensions.size()); i++) {
      String extension = extensions.get(i);
      message += extension + "(" + stats.count(extension) + ") ";
    }
    LOG.info(message);
  }
  private <T> boolean findListToRemoveFrom(
      @NotNull String name,
      @NotNull final List<T> elements,
      final Convertor<T, AbstractUrl> convertor) {
    Collection<TreeItem<Pair<AbstractUrl, String>>> list = getFavoritesListRootUrls(name);
    if (elements.size() > 1) {
      final List<T> sublist = elements.subList(0, elements.size() - 1);
      for (T obj : sublist) {
        AbstractUrl objUrl = convertor.convert(obj);
        final TreeItem<Pair<AbstractUrl, String>> item = findNextItem(objUrl, list);
        if (item == null || item.getChildren() == null) return false;
        list = item.getChildren();
      }
    }

    TreeItem<Pair<AbstractUrl, String>> found = null;
    AbstractUrl url = convertor.convert(elements.get(elements.size() - 1));
    if (url == null) return false;
    for (TreeItem<Pair<AbstractUrl, String>> pair : list) {
      if (url.equals(pair.getData().getFirst())) {
        found = pair;
        break;
      }
    }

    if (found != null) {
      list.remove(found);
      fireListeners.rootsChanged(name);
      return true;
    }
    return false;
  }
 public void removeRootByIndexes(String name, List<Integer> elementsIndexes) {
   List<TreeItem<Pair<AbstractUrl, String>>> list = getFavoritesListRootUrls(name);
   assert list != null;
   for (Integer index : elementsIndexes.subList(0, elementsIndexes.size() - 1)) {
     assert index >= 0 && index < list.size();
     final TreeItem<Pair<AbstractUrl, String>> item = list.get(index);
     list = item.getChildren();
   }
   assert list != null && !list.isEmpty();
   list.remove(elementsIndexes.get(elementsIndexes.size() - 1).intValue());
   fireListeners.rootsChanged(name);
 }
 public synchronized boolean editRoot(
     @NotNull String name,
     @NotNull List<Integer> elementsIndexes,
     final AbstractTreeNode newElement) {
   List<TreeItem<Pair<AbstractUrl, String>>> list = getFavoritesListRootUrls(name);
   assert list != null;
   for (Integer index : elementsIndexes.subList(0, elementsIndexes.size() - 1)) {
     assert index >= 0 && index < list.size();
     final TreeItem<Pair<AbstractUrl, String>> item = list.get(index);
     list = item.getChildren();
   }
   assert list != null && !list.isEmpty();
   final Object value = newElement.getValue();
   final AbstractUrl urlByElement = createUrlByElement(value, myProject);
   if (urlByElement == null) return false;
   list.set(
       elementsIndexes.get(elementsIndexes.size() - 1).intValue(),
       new TreeItem<Pair<AbstractUrl, String>>(
           Pair.create(urlByElement, newElement.getClass().getName())));
   return true;
 }
  private void runTransformingCompilers(final ModuleChunk chunk) {
    final JavaSourceTransformingCompiler[] transformers =
        CompilerManager.getInstance(myProject).getCompilers(JavaSourceTransformingCompiler.class);
    if (transformers.length == 0) {
      return;
    }
    if (LOG.isDebugEnabled()) {
      LOG.debug("Running transforming compilers...");
    }
    final Module[] modules = chunk.getModules();
    for (final JavaSourceTransformingCompiler transformer : transformers) {
      final Map<VirtualFile, VirtualFile> originalToCopyFileMap =
          new HashMap<VirtualFile, VirtualFile>();
      final Application application = ApplicationManager.getApplication();
      application.invokeAndWait(
          new Runnable() {
            public void run() {
              for (final Module module : modules) {
                for (final VirtualFile file : chunk.getFilesToCompile(module)) {
                  final VirtualFile untransformed = chunk.getOriginalFile(file);
                  if (transformer.isTransformable(untransformed)) {
                    application.runWriteAction(
                        new Runnable() {
                          public void run() {
                            try {
                              // if untransformed != file, the file is already a (possibly
                              // transformed) copy of the original 'untransformed' file.
                              // If this is the case, just use already created copy and do not copy
                              // file content once again
                              final VirtualFile fileCopy =
                                  untransformed.equals(file)
                                      ? createFileCopy(getTempDir(module), file)
                                      : file;
                              originalToCopyFileMap.put(file, fileCopy);
                            } catch (IOException e) {
                              // skip it
                            }
                          }
                        });
                  }
                }
              }
            }
          },
          myCompileContext.getProgressIndicator().getModalityState());

      // do actual transform
      for (final Module module : modules) {
        final List<VirtualFile> filesToCompile = chunk.getFilesToCompile(module);
        for (int j = 0; j < filesToCompile.size(); j++) {
          final VirtualFile file = filesToCompile.get(j);
          final VirtualFile fileCopy = originalToCopyFileMap.get(file);
          if (fileCopy != null) {
            final boolean ok =
                transformer.transform(myCompileContext, fileCopy, chunk.getOriginalFile(file));
            if (ok) {
              chunk.substituteWithTransformedVersion(module, j, fileCopy);
            }
          }
        }
      }
    }
  }