Method GetDirectUIDialogText

cpp/iedriver/Alert.cpp:256–323

}

std::string Alert::GetDirectUIDialogText() {
  LOG(TRACE) << "Entering Alert::GetDirectUIDialogText";
  std::string alert_text_value = "";
  HWND direct_ui_child_handle = this->GetDirectUIChild();

  CComPtr<IAccessible> window_object;
  HRESULT hr = ::AccessibleObjectFromWindow(
      direct_ui_child_handle,
      OBJID_WINDOW,
      IID_IAccessible,
      reinterpret_cast<void**>(&window_object));
  if (FAILED(hr)) {
    LOGHR(WARN, hr) << "Failed to get Active Accessibility window object from dialog";
    return alert_text_value;
  }

  // ASSUMPTION: There is an object with the role of "pane" as a child of
  // the window object.
  CComPtr<IAccessible> pane_object = this->GetChildWithRole(window_object,
                                                            ROLE_SYSTEM_PANE,
                                                            0);
  if (!pane_object) {
    LOG(WARN) << "Failed to get Active Accessibility pane child object from window";
    return alert_text_value;
  }

  int child_index = 0;
  if (!this->is_standard_alert_) {
    // ASSUMPTION: This means the alert is from onbeforeunload, and
    // the second "static text" accessibility object is the one
    // that contains the message.
    child_index = 1;
  }

  CComPtr<IAccessible> message_text_object = this->GetChildWithRole(
      pane_object,
      ROLE_SYSTEM_STATICTEXT,
      child_index);
  if (!message_text_object) {
    LOG(WARN) << "Failed to get Active Accessibility text child object from pane";
    return alert_text_value;
  }

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

  CComBSTR text_bstr;
  hr = message_text_object->get_accName(child_id, &text_bstr);
  if (FAILED(hr)) {
    LOGHR(WARN, hr) << "Failed to get accName property from text object";
    return alert_text_value;
  } else if (hr != S_OK) {
    // N.B., get_accName can return an error value without it being a
    // standard COM error.
    LOG(WARN) << "Getting accName property from text object returned an error "
              << "(value: " << hr << "). The text object may not have a name.";
    return alert_text_value;