private void setUpChooseHtmlToShow() {
   FileChooserDescriptor fileChooserDescriptor =
       FileChooserDescriptorFactory.createSingleFileDescriptor(StdFileTypes.HTML);
   fileChooserDescriptor.setRoots(ProjectRootManager.getInstance(project).getContentRoots());
   htmlChooseFile.addBrowseFolderListener(
       "Choose file to show after translation is finished", null, project, fileChooserDescriptor);
 }
  private void setUpChooseGenerateFilePath() {
    FileChooserDescriptor fileChooserDescriptor =
        FileChooserDescriptorFactory.getDirectoryChooserDescriptor(
            "directory where generated files will be stored");
    fileChooserDescriptor.setRoots(ProjectRootManager.getInstance(project).getContentRoots());
    generatedChooseFile.addBrowseFolderListener(null, null, project, fileChooserDescriptor);
    final JTextField textField = generatedChooseFile.getTextField();
    textField
        .getDocument()
        .addDocumentListener(
            new DocumentListener() {
              @Override
              public void insertUpdate(DocumentEvent e) {
                onChange();
              }

              @Override
              public void removeUpdate(DocumentEvent e) {
                onChange();
              }

              @Override
              public void changedUpdate(DocumentEvent e) {
                onChange();
              }

              private void onChange() {
                File file = new File(generatedChooseFile.getText());
                if (!file.isDirectory()) {
                  textField.setForeground(Color.RED);
                } else {
                  textField.setForeground(Color.BLACK);
                }
              }
            });
  }
  @NotNull
  protected PsiElement[] invokeDialog(final Project project, final PsiDirectory directory) {
    final FileChooserDescriptor descriptor =
        FileChooserDescriptorFactory.createSingleFolderDescriptor();
    descriptor.setRoots(project.getBaseDir());
    PsiDirectory currentDir = currentFile.getContainingDirectory();
    PsiDirectory includeDir = currentDir.findSubdirectory("Includes");
    VirtualFile selectDir = directory.getVirtualFile();
    if (includeDir == null) {
      PsiDirectory parentDir = currentDir.getParentDirectory();
      if (parentDir != null) {
        includeDir = parentDir.findSubdirectory("Includes");
      }
    }
    if (includeDir != null) selectDir = includeDir.getVirtualFile();

    final VirtualFile myFolder = FileChooser.chooseFile(descriptor, project, selectDir);
    if (myFolder != null) {
      PsiDirectory myDirectory = PsiManager.getInstance(project).findDirectory(myFolder);
      final MyInputValidator validator = new MyInputValidator(project, myDirectory);
      final String fileName =
          Messages.showInputDialog(
              project,
              getDialogPrompt(),
              getDialogTitle(),
              Messages.getQuestionIcon(),
              "",
              validator);

      final PsiElement[] elements = validator.getCreatedElements();
      if (elements.length > 0) {
        ApplicationManager.getApplication()
            .invokeLater(
                new Runnable() {
                  @Override
                  public void run() {
                    ApplicationManager.getApplication()
                        .runWriteAction(
                            new Runnable() {
                              @Override
                              public void run() {
                                try {
                                  CodeStyleManager codeStyleManager =
                                      CodeStyleManager.getInstance(project);
                                  CaretModel caretModel = editor.getCaretModel();
                                  int caretOffset = selectonModel.getSelectionStart();
                                  EditorModificationUtil.deleteSelectedText(editor);
                                  PsiDocumentManager psiDocumentManager =
                                      PsiDocumentManager.getInstance(project);
                                  caretModel.moveToOffset(caretOffset);
                                  EditorModificationUtil.insertStringAtCaret(
                                      editor, "<% include " + fileName + " %>", true, false);
                                  PsiFile createdFile = (PsiFile) elements[0];
                                  codeStyleManager.reformat(createdFile);
                                  psiDocumentManager.commitDocument(
                                      psiDocumentManager.getDocument(currentFile));
                                  FileEditorManager.getInstance(project)
                                      .openFile(currentFile.getVirtualFile(), true);
                                  codeStyleManager.adjustLineIndent(currentFile, caretOffset);
                                  psiDocumentManager.commitDocument(
                                      psiDocumentManager.getDocument(currentFile));
                                } catch (Exception e) {
                                  e.printStackTrace(); // To change body of catch statement use
                                  // File | Settings | File Templates.
                                }
                              }
                            });
                  }
                });
      }
      return elements;
    }
    return PsiElement.EMPTY_ARRAY;
  }
  @Override
  protected JComponent createCenterPanel() {
    final FileChooserDescriptor descriptor =
        FileChooserDescriptorFactory.createAllButJarContentsDescriptor();
    calculateRoots();
    final ArrayList<VirtualFile> list = new ArrayList<VirtualFile>(myRoots);
    final Comparator<VirtualFile> comparator =
        new Comparator<VirtualFile>() {
          @Override
          public int compare(VirtualFile o1, VirtualFile o2) {
            final boolean isDir1 = o1.isDirectory();
            final boolean isDir2 = o2.isDirectory();
            if (isDir1 != isDir2) return isDir1 ? -1 : 1;

            final String module1 = myModulesSet.get(o1);
            final String path1 = module1 != null ? module1 : o1.getPath();
            final String module2 = myModulesSet.get(o2);
            final String path2 = module2 != null ? module2 : o2.getPath();
            return path1.compareToIgnoreCase(path2);
          }
        };
    descriptor.setRoots(list);
    myTree = new Tree();
    myTree.setMinimumSize(new Dimension(200, 200));
    myTree.setBorder(BORDER);
    myTree.setShowsRootHandles(true);
    myTree.setRootVisible(true);
    myTree.getExpandableItemsHandler().setEnabled(false);
    final MyCheckboxTreeCellRenderer cellRenderer =
        new MyCheckboxTreeCellRenderer(
            mySelectionManager, myModulesSet, myProject, myTree, myRoots);
    final FileSystemTreeImpl fileSystemTree =
        new FileSystemTreeImpl(
            myProject,
            descriptor,
            myTree,
            cellRenderer,
            null,
            new Convertor<TreePath, String>() {
              @Override
              public String convert(TreePath o) {
                final DefaultMutableTreeNode lastPathComponent =
                    ((DefaultMutableTreeNode) o.getLastPathComponent());
                final Object uo = lastPathComponent.getUserObject();
                if (uo instanceof FileNodeDescriptor) {
                  final VirtualFile file = ((FileNodeDescriptor) uo).getElement().getFile();
                  final String module = myModulesSet.get(file);
                  if (module != null) return module;
                  return file == null ? "" : file.getName();
                }
                return o.toString();
              }
            });
    final AbstractTreeUi ui = fileSystemTree.getTreeBuilder().getUi();
    ui.setNodeDescriptorComparator(
        new Comparator<NodeDescriptor>() {
          @Override
          public int compare(NodeDescriptor o1, NodeDescriptor o2) {
            if (o1 instanceof FileNodeDescriptor && o2 instanceof FileNodeDescriptor) {
              final VirtualFile f1 = ((FileNodeDescriptor) o1).getElement().getFile();
              final VirtualFile f2 = ((FileNodeDescriptor) o2).getElement().getFile();
              return comparator.compare(f1, f2);
            }
            return o1.getIndex() - o2.getIndex();
          }
        });
    myRoot = (DefaultMutableTreeNode) myTree.getModel().getRoot();

    new ClickListener() {
      @Override
      public boolean onClick(@NotNull MouseEvent e, int clickCount) {
        int row = myTree.getRowForLocation(e.getX(), e.getY());
        if (row < 0) return false;
        final Object o = myTree.getPathForRow(row).getLastPathComponent();
        if (myRoot == o || getFile(o) == null) return false;

        Rectangle rowBounds = myTree.getRowBounds(row);
        cellRenderer.setBounds(rowBounds);
        Rectangle checkBounds = cellRenderer.myCheckbox.getBounds();
        checkBounds.setLocation(rowBounds.getLocation());

        if (checkBounds.height == 0) checkBounds.height = rowBounds.height;

        if (checkBounds.contains(e.getPoint())) {
          mySelectionManager.toggleSelection((DefaultMutableTreeNode) o);
          myTree.revalidate();
          myTree.repaint();
        }
        return true;
      }
    }.installOn(myTree);

    myTree.addKeyListener(
        new KeyAdapter() {
          public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_SPACE) {
              TreePath[] paths = myTree.getSelectionPaths();
              if (paths == null) return;
              for (TreePath path : paths) {
                if (path == null) continue;
                final Object o = path.getLastPathComponent();
                if (myRoot == o || getFile(o) == null) return;
                mySelectionManager.toggleSelection((DefaultMutableTreeNode) o);
              }

              myTree.revalidate();
              myTree.repaint();
              e.consume();
            }
          }
        });

    JBPanel panel = new JBPanel(new BorderLayout());
    panel.add(new JBScrollPane(fileSystemTree.getTree()), BorderLayout.CENTER);
    mySelectedLabel = new JLabel("");
    mySelectedLabel.setBorder(BorderFactory.createEmptyBorder(2, 0, 2, 0));
    panel.add(mySelectedLabel, BorderLayout.SOUTH);

    mySelectionManager.setSelectionChangeListener(
        new PlusMinus<VirtualFile>() {
          @Override
          public void plus(VirtualFile virtualFile) {
            mySelectedFiles.add(virtualFile);
            recalculateErrorText();
          }

          private void recalculateErrorText() {
            checkEmpty();
            if (mySelectionManager.canAddSelection()) {
              mySelectedLabel.setText("");
            } else {
              mySelectedLabel.setText(CAN_NOT_ADD_TEXT);
            }
            mySelectedLabel.revalidate();
          }

          @Override
          public void minus(VirtualFile virtualFile) {
            mySelectedFiles.remove(virtualFile);
            recalculateErrorText();
          }
        });
    return panel;
  }
  /** @param contentEntryEditor : null means to clear the editor */
  public void setContentEntryEditor(final ContentEntryEditor contentEntryEditor) {
    if (myContentEntryEditor != null && myContentEntryEditor.equals(contentEntryEditor)) {
      return;
    }
    if (myFileSystemTree != null) {
      Disposer.dispose(myFileSystemTree);
      myFileSystemTree = null;
    }
    if (myContentEntryEditor != null) {
      myContentEntryEditor.removeContentEntryEditorListener(myContentEntryEditorListener);
      myContentEntryEditor = null;
    }
    if (contentEntryEditor == null) {
      ((DefaultTreeModel) myTree.getModel()).setRoot(EMPTY_TREE_ROOT);
      myTreePanel.setVisible(false);
      if (myFileSystemTree != null) {
        Disposer.dispose(myFileSystemTree);
      }
      return;
    }
    myTreePanel.setVisible(true);
    myContentEntryEditor = contentEntryEditor;
    myContentEntryEditor.addContentEntryEditorListener(myContentEntryEditorListener);

    final ContentEntry entry = contentEntryEditor.getContentEntry();
    assert entry != null : contentEntryEditor;
    final VirtualFile file = entry.getFile();
    myDescriptor.setRoots(file);
    if (file == null) {
      final String path = VfsUtilCore.urlToPath(entry.getUrl());
      myDescriptor.setTitle(FileUtil.toSystemDependentName(path));
    }

    final Runnable init =
        new Runnable() {
          @Override
          public void run() {
            //noinspection ConstantConditions
            myFileSystemTree.updateTree();
            myFileSystemTree.select(file, null);
          }
        };

    myFileSystemTree =
        new FileSystemTreeImpl(
            myProject, myDescriptor, myTree, getContentEntryCellRenderer(), init, null) {
          @Override
          protected AbstractTreeBuilder createTreeBuilder(
              JTree tree,
              DefaultTreeModel treeModel,
              AbstractTreeStructure treeStructure,
              Comparator<NodeDescriptor> comparator,
              FileChooserDescriptor descriptor,
              final Runnable onInitialized) {
            return new MyFileTreeBuilder(
                tree, treeModel, treeStructure, comparator, descriptor, onInitialized);
          }
        };
    myFileSystemTree.showHiddens(true);
    Disposer.register(myProject, myFileSystemTree);

    final NewFolderAction newFolderAction = new MyNewFolderAction();
    final DefaultActionGroup mousePopupGroup = new DefaultActionGroup();
    mousePopupGroup.add(myEditingActionsGroup);
    mousePopupGroup.addSeparator();
    mousePopupGroup.add(newFolderAction);
    myFileSystemTree.registerMouseListener(mousePopupGroup);
  }