Method GetChildWithRole

cpp/iedriver/Alert.cpp:325–369

}

IAccessible* Alert::GetChildWithRole(IAccessible* parent, long expected_role, int index) {
  LOG(TRACE) << "Entering Alert::GetChildWithRole";
  IAccessible* child = NULL;
  long child_count;
  HRESULT hr = parent->get_accChildCount(&child_count);
  if (FAILED(hr)) {
    LOGHR(WARN, hr) << "Failed to get accChildCount property from Active Accessibility object";
    return child;
  }

  long returned_children = 0;
  std::vector<CComVariant> child_array(child_count);
  hr = ::AccessibleChildren(parent, 0, child_count, &child_array[0], &returned_children);

  int found_index = 0;
  for (long i = 0; i < child_count; ++i) {
    if (child_array[i].vt == VT_DISPATCH) {
      CComPtr<IAccessible> child_object;
      hr = child_array[i].pdispVal->QueryInterface<IAccessible>(&child_object);
      if (FAILED(hr)) {
        LOGHR(WARN, hr) << "QueryInterface for IAccessible failed for child object with index " << i;
      }

      CComVariant child_id;
      child_id.vt = VT_I4;
      child_id.lVal = CHILDID_SELF;

      CComVariant actual_role;
      hr = child_object->get_accRole(child_id, &actual_role);
      if (FAILED(hr)) {
        LOGHR(WARN, hr) << "Failed to get accRole property from Active Accessibility object";
      }

      if (expected_role == actual_role.lVal) {
        if (found_index == index) {
          child = child_object.Detach();
        } else {
          ++found_index;
        }
      }
      LOG(DEBUG) << "accRole for child with index " << i << ": " << actual_role.lVal;
    }
  }
  return child;
}

HWND Alert::GetDirectUIChild() {
  LOG(TRACE) << "Entering Alert::GetDirectUIChild";