initialize static method

void initialize()

Implementation

static void initialize() {
  if (_initialized) return;
  _startListener = (html.Event event) {
    isComposing = true;
  };
  _endListener = (html.Event event) {
    isComposing = false;
  };
  html.document.addEventListener('compositionstart', _startListener);
  html.document.addEventListener('compositionend', _endListener);
  _initialized = true;
}