C++ ItemList::emplace_back方法代码示例

void
TrafficListWidget::UpdateList()
{
  assert(filter_widget != nullptr);

  items.clear();
  last_update.Clear();

  const TCHAR *callsign = filter_widget->GetValueString(CALLSIGN);
  if (!StringIsEmpty(callsign)) {
    FlarmId ids[30];
    unsigned count = FlarmDetails::FindIdsByCallSign(callsign, ids, 30);

    for (unsigned i = 0; i < count; ++i)
      AddItem(ids[i]);
  } else {
    /* if no filter was set, show a list of current traffic and known
       traffic */

    /* add live FLARM traffic */
    for (const auto &i : CommonInterface::Basic().flarm.traffic.list) {
      AddItem(i.id);
    }

    /* add FLARM peers that have a user-defined color */
    for (const auto &i : traffic_databases->flarm_colors) {
      Item &item = AddItem(i.first);
      item.color = i.second;
    }

    /* add FLARM peers that have a user-defined name */
    for (const auto &i : traffic_databases->flarm_names) {
      AddItem(i.id);
    }

#ifdef HAVE_SKYLINES_TRACKING_HANDLER
    /* show SkyLines traffic unless this is a FLARM traffic picker
       dialog (from dlgTeamCode) */
    if (action_listener == nullptr) {
      const auto &data = tracking->GetSkyLinesData();
      const ScopeLock protect(data.mutex);
      for (const auto &i : data.traffic) {
        items.emplace_back(i.first, i.second.location);
        Item &item = items.back();

        if (i.second.location.IsValid() &&
            CommonInterface::Basic().location_available)
          item.vector = GeoVector(CommonInterface::Basic().location,
                                  i.second.location);
      }
    }
#endif
  }

  GetList().SetLength(items.size());

  UpdateVolatile();
  UpdateButtons();
}

  /**
   * Add a new item to the list, unless the given FLARM id already
   * exists.
   */
  Item &AddItem(FlarmId id) {
    auto existing = FindItem(id);
    if (existing != items.end())
      return *existing;

    items.emplace_back(id);
    return items.back();
  }

  TrafficListWidget(ActionListener &_action_listener,
                    const FlarmId *array, size_t count)
    :action_listener(&_action_listener), filter_widget(nullptr),
     buttons(nullptr) {
    items.reserve(count);

    for (unsigned i = 0; i < count; ++i)
      items.emplace_back(array[i]);
  }

bool QueueEditor::EditGroup(NzbInfo* nzbInfo, DownloadQueue::EEditAction action, int offset, const char* text)
{
	ItemList itemList;
	bool allPaused = true;
	int id = nzbInfo->GetId();

	// collecting files belonging to group
	for (FileInfo* fileInfo : nzbInfo->GetFileList())
	{
		itemList.emplace_back(fileInfo, nullptr, 0);
		allPaused &= fileInfo->GetPaused();
	}

	if (action == DownloadQueue::eaGroupDelete ||
		action == DownloadQueue::eaGroupParkDelete ||
		action == DownloadQueue::eaGroupDupeDelete ||
		action == DownloadQueue::eaGroupFinalDelete)
	{
		nzbInfo->SetDeleting(true);
		nzbInfo->SetParking(action == DownloadQueue::eaGroupParkDelete &&
			g_Options->GetKeepHistory() > 0 &&
			!nzbInfo->GetUnpackCleanedUpDisk() &&
			nzbInfo->GetCurrentSuccessArticles() > 0);
		nzbInfo->SetAvoidHistory(action == DownloadQueue::eaGroupFinalDelete);
		nzbInfo->SetDeletePaused(allPaused);
		if (action == DownloadQueue::eaGroupDupeDelete)
		{
			nzbInfo->SetDeleteStatus(NzbInfo::dsDupe);
		}
		nzbInfo->SetCleanupDisk(action != DownloadQueue::eaGroupParkDelete);
	}

	DownloadQueue::EEditAction GroupToFileMap[] = {
		(DownloadQueue::EEditAction)0,
		DownloadQueue::eaFileMoveOffset,
		DownloadQueue::eaFileMoveTop,
		DownloadQueue::eaFileMoveBottom,
		DownloadQueue::eaFilePause,
		DownloadQueue::eaFileResume,
		DownloadQueue::eaFileDelete,
		DownloadQueue::eaFilePauseAllPars,
		DownloadQueue::eaFilePauseExtraPars,
		DownloadQueue::eaFileReorder,
		DownloadQueue::eaFileSplit,
		DownloadQueue::eaFileMoveOffset,
		DownloadQueue::eaFileMoveTop,
		DownloadQueue::eaFileMoveBottom,
		DownloadQueue::eaFilePause,
		DownloadQueue::eaFileResume,
		DownloadQueue::eaFileDelete,
		DownloadQueue::eaFileDelete,
		DownloadQueue::eaFileDelete,
		DownloadQueue::eaFileDelete,
		DownloadQueue::eaFilePauseAllPars,
		DownloadQueue::eaFilePauseExtraPars,
		(DownloadQueue::EEditAction)0,
		(DownloadQueue::EEditAction)0,
		(DownloadQueue::EEditAction)0,
		(DownloadQueue::EEditAction)0 };

	bool ok = InternEditList(&itemList, nullptr, GroupToFileMap[action], offset, text);

	if ((action == DownloadQueue::eaGroupDelete || action == DownloadQueue::eaGroupDupeDelete || action == DownloadQueue::eaGroupFinalDelete) &&
		// NZBInfo could have been destroyed already
		m_downloadQueue->GetQueue()->Find(id))
	{
		DownloadQueue::Aspect deleteAspect = { DownloadQueue::eaNzbDeleted, m_downloadQueue, nzbInfo, nullptr };
		m_downloadQueue->Notify(&deleteAspect);
	}

	return ok;
}