dispose static method

void dispose()

Implementation

static void dispose() {
  if (!_initialized) return;
  if (_startListener != null) {
    html.document.removeEventListener('compositionstart', _startListener);
  }
  if (_endListener != null) {
    html.document.removeEventListener('compositionend', _endListener);
  }
  _startListener = null;
  _endListener = null;
  _initialized = false;
  isComposing = false;
}