private boolean onAfterTextAdded()

in cell/src/main/java/jetbrains/jetpad/cell/text/ValidTextEditingTrait.java [123:166]
36 lines of code
14 McCabe index (conditional complexity)

  private boolean onAfterTextAdded(TextCell editor, CompletionParameters cp, boolean sideTransformationsAllowed) {
    Boolean eagerCompletion = editor.get(TextEditing.EAGER_COMPLETION);
    if (!eagerCompletion && isValid(editor)) return false;

    String text = editor.text().get();
    if (text == null || text.isEmpty()) return false;

    //simple validation
    CompletionItems completion = Completion.completionFor(editor, cp);
    if (completion.hasSingleMatch(text, eagerCompletion)) {
      completion.completeFirstMatch(text);
      return true;
    }

    boolean completed = false;
    if (sideTransformationsAllowed) {
      if (editor.isEnd() && !completion.hasMatches(text)) {
        //right transform
        String prefix = text.substring(0, text.length() - 1);
        String suffix = text.substring(text.length() - 1);
        if (getValidator(editor).apply(prefix)) {
          completed = handleSideTransform(editor, prefix, suffix.trim(), Side.RIGHT, eagerCompletion);
        } else {
          List<CompletionItem> matches = completion.matches(prefix);
          if (matches.size() == 1) {
            CellContainer container = editor.getContainer();
            matches.get(0).complete(prefix).run();
            assertValid(container.focusedCell.get());
            container.keyTyped(new KeyEvent(Key.UNKNOWN, suffix.charAt(0), Collections.<ModifierKey>emptySet(), false));
            // Here we don't set 'true' to 'completed' variable, because the structural completion will be performed
            // on the new key event.
          }
        }
      } else if (editor.caretPosition().get() == 1 && !CellCompletionController.isCompletionActive(editor)) {
        //left transform
        String prefix = text.substring(0, 1).trim();
        String suffix = text.substring(1);
        if (getValidator(editor).apply(suffix)) {
          completed = handleSideTransform(editor, suffix, prefix, Side.LEFT, eagerCompletion);
        }
      }
    }
    return completed;
  }