C++ KFileItemList::isEmpty方法代码示例

void InformationPanel::setSelection(const KFileItemList& selection)
{
    if (!isVisible()) {
        return;
    }

    if (selection.isEmpty() && m_selection.isEmpty()) {
        // The selection has not really changed, only the current index.
        // QItemSelectionModel emits a signal in this case and it is less
        // expensive doing the check this way instead of patching
        // DolphinView::emitSelectionChanged().
        return;
    }

    m_selection = selection;
    m_fileItem = KFileItem();

    const int count = selection.count();
    if (count == 0) {
        if (!isEqualToShownUrl(url())) {
            m_shownUrl = url();
            showItemInfo();
        }
    } else {
        if ((count == 1) && !selection.first().url().isEmpty()) {
            m_urlCandidate = selection.first().url();
        }
        m_infoTimer->start();
    }
}

void KFileItemListPropertiesPrivate::determineMimeTypeAndGroup() const
{
    if (!m_items.isEmpty()) {
        m_mimeType = m_items.first().mimetype();
        m_mimeGroup = m_mimeType.left(m_mimeType.indexOf('/'));
    }
    foreach (const KFileItem &item, m_items) {
        const QString itemMimeType = item.mimetype();
        // Determine if common mimetype among all items
        if (m_mimeType != itemMimeType) {
            m_mimeType.clear();
            if (m_mimeGroup != itemMimeType.left(itemMimeType.indexOf('/'))) {
                m_mimeGroup.clear(); // mimetype groups are different as well!
            }
        }
    }
}

void HiddenFileView::insertNewFiles(const KFileItemList &newone)
{
  if ( newone.isEmpty() )
     return;

  KFileItem *tmp;

  int j=0;

  for (KFileItemListIterator it(newone); (tmp = it.current()); ++it)
  {
    j++;

    bool hidden = matchHidden(tmp->text());
    bool veto = matchVeto(tmp->text());
    bool vetoOplock = matchVetoOplock(tmp->text());

    new HiddenListViewItem( _dlg->hiddenListView, tmp, hidden, veto, vetoOplock );

  }
}

void KFileItemListPropertiesPrivate::setItems(const KFileItemList &items)
{
    const bool initialValue = !items.isEmpty();
    m_items = items;
    m_urlList = items.targetUrlList();
    m_supportsReading = initialValue;
    m_supportsDeleting = initialValue;
    m_supportsWriting = initialValue;
    m_supportsMoving = initialValue;
    m_isDirectory = initialValue;
    m_isLocal = true;
    m_mimeType.clear();
    m_mimeGroup.clear();

    QFileInfo parentDirInfo;
    foreach (const KFileItem &item, items) {
        const QUrl url = item.url();
        m_isLocal = m_isLocal && url.isLocalFile();
        m_supportsReading  = m_supportsReading  && KProtocolManager::supportsReading(url);
        m_supportsDeleting = m_supportsDeleting && KProtocolManager::supportsDeleting(url);
        m_supportsWriting  = m_supportsWriting  && KProtocolManager::supportsWriting(url) && item.isWritable();
        m_supportsMoving   = m_supportsMoving   && KProtocolManager::supportsMoving(url);

        // For local files we can do better: check if we have write permission in parent directory
        // TODO: if we knew about the parent KFileItem, we could even do that for remote protocols too
        if (m_isLocal && (m_supportsDeleting || m_supportsMoving)) {
            const QString directory = url.adjusted(QUrl::RemoveFilename | QUrl::StripTrailingSlash).path();
            if (parentDirInfo.filePath() != directory) {
                parentDirInfo.setFile(directory);
            }
            if (!parentDirInfo.isWritable()) {
                m_supportsDeleting = false;
                m_supportsMoving = false;
            }
        }
        if (m_isDirectory && !item.isDir()) {
            m_isDirectory = false;
        }
    }
}