INT_PTR CALLBACK CefJavaScriptDialogRunnerWin::DialogProc()

in libcef/browser/native/javascript_dialog_runner_win.cc [21:85]
62 lines of code
11 McCabe index (conditional complexity)

INT_PTR CALLBACK CefJavaScriptDialogRunnerWin::DialogProc(HWND dialog,
                                                          UINT message,
                                                          WPARAM wparam,
                                                          LPARAM lparam) {
  switch (message) {
    case WM_INITDIALOG: {
      SetWindowLongPtr(dialog, DWLP_USER, static_cast<LONG_PTR>(lparam));
      CefJavaScriptDialogRunnerWin* owner =
          reinterpret_cast<CefJavaScriptDialogRunnerWin*>(lparam);
      owner->dialog_win_ = dialog;
      SetDlgItemText(dialog, IDC_DIALOGTEXT, owner->message_text_.c_str());
      if (owner->message_type_ == content::JAVASCRIPT_DIALOG_TYPE_PROMPT)
        SetDlgItemText(dialog, IDC_PROMPTEDIT,
                       owner->default_prompt_text_.c_str());
      break;
    }
    case WM_CLOSE: {
      CefJavaScriptDialogRunnerWin* owner =
          reinterpret_cast<CefJavaScriptDialogRunnerWin*>(
              GetWindowLongPtr(dialog, DWLP_USER));
      if (owner) {
        owner->CloseDialog(false, std::wstring());

        // No need for the system to call DestroyWindow() because it will be
        // called by the Cancel() method.
        return 0;
      }
      break;
    }
    case WM_COMMAND: {
      CefJavaScriptDialogRunnerWin* owner =
          reinterpret_cast<CefJavaScriptDialogRunnerWin*>(
              GetWindowLongPtr(dialog, DWLP_USER));
      std::wstring user_input;
      bool finish = false;
      bool result = false;
      switch (LOWORD(wparam)) {
        case IDOK:
          finish = true;
          result = true;
          if (owner->message_type_ == content::JAVASCRIPT_DIALOG_TYPE_PROMPT) {
            size_t length =
                GetWindowTextLength(GetDlgItem(dialog, IDC_PROMPTEDIT)) + 1;
            if (length > 1) {
              user_input.reserve(length);
              user_input.resize(length - 1);
              GetDlgItemText(dialog, IDC_PROMPTEDIT, &user_input[0], length);
            }
          }
          break;
        case IDCANCEL:
          finish = true;
          result = false;
          break;
      }
      if (finish) {
        owner->CloseDialog(result, user_input);
      }
      break;
    }
    default:
      break;
  }
  return 0;
}