C++ KFileItemList类代码示例

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 UploadDialog::imageSelected(QTreeWidgetItem* item)
{
    if( !item || m_transferring )
    {
        m_imagePreview->clear();
        return;
    }

    ImageListItem* pitem = static_cast<ImageListItem*>( item );
    if ( !pitem ) return;

    m_imagePreview->clear();

    QString IdemIndexed = "file:" + pitem->pathSrc();

    KUrl url( IdemIndexed );

    if ( !url.isValid() )
        return;

#if KDE_IS_VERSION(4,7,0)
    KFileItemList items;
    items.append(KFileItem(KFileItem::Unknown, KFileItem::Unknown, url, true));
    KIO::PreviewJob* m_thumbJob = KIO::filePreview(items, QSize(m_imagePreview->height(), m_imagePreview->height()));
#else
    KIO::PreviewJob* m_thumbJob = KIO::filePreview(url, m_imagePreview->height());
#endif

    connect(m_thumbJob, SIGNAL(gotPreview(const KFileItem*,QPixmap)),
            this,   SLOT(gotImagePreview(const KFileItem*,QPixmap)) );
}

void BatchProcessImagesDialog::slotImageSelected(QTreeWidgetItem * item)
{
    if (!item || m_listFiles->topLevelItemCount() == 0)
    {
        m_ui->m_imageLabel->clear();
        return;
    }

    BatchProcessImagesItem *pitem = static_cast<BatchProcessImagesItem*>(item);

    m_ui->m_imageLabel->clear();

    QString IdemIndexed = "file:" + pitem->pathSrc();

    KUrl url(IdemIndexed);

    if ( !url.isValid() )
        return;

#if KDE_IS_VERSION(4,7,0)
    KFileItemList items;
    items.append(KFileItem(KFileItem::Unknown, KFileItem::Unknown, url, true));
    KIO::PreviewJob* m_thumbJob = KIO::filePreview(items, QSize(m_ui->m_imageLabel->height(), m_ui->m_imageLabel->height()));
#else
    KIO::PreviewJob* m_thumbJob = KIO::filePreview(url, m_ui->m_imageLabel->height());
#endif

    connect(m_thumbJob, SIGNAL(gotPreview(KFileItem,QPixmap)),
            this, SLOT(slotGotPreview(KFileItem,QPixmap)));
}

void DirModel::delayedPreview()
{
    QHash<QUrl, QPersistentModelIndex>::const_iterator i = m_filesToPreview.constBegin();

    KFileItemList list;

    while (i != m_filesToPreview.constEnd()) {
        QUrl file = i.key();
        QPersistentModelIndex index = i.value();


        if (!m_previewJobs.contains(file) && file.isValid()) {
            list.append(KFileItem(file, QString(), 0));
            m_previewJobs.insert(file, QPersistentModelIndex(index));
        }

        ++i;
    }

    if (list.size() > 0) {
        KIO::PreviewJob* job = KIO::filePreview(list, m_screenshotSize);
        job->setIgnoreMaximumSize(true);
        // qDebug() << "Created job" << job;
        connect(job, &KIO::PreviewJob::gotPreview,
                this, &DirModel::showPreview);
        connect(job, &KIO::PreviewJob::failed,
                this, &DirModel::previewFailed);
    }

    m_filesToPreview.clear();
}

bool TrashImpl::synchronousDel( const TQString& path, bool setLastErrorCode, bool isDir )
{
    const int oldErrorCode = m_lastErrorCode;
    const TQString oldErrorMsg = m_lastErrorMessage;
    KURL url;
    url.setPath( path );

    // First ensure that all dirs have u+w permissions,
    // otherwise we won't be able to delete files in them (#130780).
    if ( isDir ) {
        kdDebug() << k_funcinfo << "chmod'ing " << url << endl;
        KFileItem fileItem( url, "inode/directory", KFileItem::Unknown );
        KFileItemList fileItemList;
        fileItemList.append( &fileItem );
        TDEIO::ChmodJob* chmodJob = TDEIO::chmod( fileItemList, 0200, 0200, TQString::null, TQString::null, true /*recursive*/, false /*showProgressInfo*/ );
        connect( chmodJob, TQT_SIGNAL( result(TDEIO::Job *) ),
                 this, TQT_SLOT( jobFinished(TDEIO::Job *) ) );
        tqApp->eventLoop()->enterLoop();
    }

    kdDebug() << k_funcinfo << "deleting " << url << endl;
    TDEIO::DeleteJob *job = TDEIO::del( url, false, false );
    connect( job, TQT_SIGNAL( result(TDEIO::Job *) ),
             this, TQT_SLOT( jobFinished(TDEIO::Job *) ) );
    tqApp->eventLoop()->enterLoop();
    bool ok = m_lastErrorCode == 0;
    if ( !setLastErrorCode ) {
        m_lastErrorCode = oldErrorCode;
        m_lastErrorMessage = oldErrorMsg;
    }
    return ok;
}

void ThumbView::slImageChanged( KFileItem *kfit )
{
   if( ! kfit ) return;
   // kdDebug(28000) << "changes to one thumbnail!" << endl;

   KURL thumbDir = currentDir();
   KURL itemUrl = kfit->url();

   /* delete filename */
   itemUrl.setFileName( QString());
   if( !itemUrl.equals( thumbDir, true ))
   {
      // kdDebug(28000) << "returning, because directory does not match: " << itemUrl.prettyURL() << endl;
      // kdDebug(28000) << "and my URL: " << thumbDir.prettyURL() << endl;
      return;
   }

   if( deleteImage( kfit ))
   {
      kdDebug(28000) << "was changed, deleted first!" << endl;
   }
   /* Trigger a new reading */
   KFileItemList li;
   li.append( kfit );
   slNewFileItems( li );
}

void KDirModelV2Private::newItemsFromLister(const KFileItemList& items)
{
    qDebug() << "newItemsFromLister delay:" << m_time.elapsed();
    m_time.restart();
    const int itemCount = items.count();
    const int newItemListLength = m_itemList.count() + itemCount;

    // We can already determine the number of items in this list. Reserve them manyally.
    m_itemList.reserve(newItemListLength);

    m_model->beginInsertRows(m_currentIndex, rowCount, itemCount);

    QTime time;
    time.start();

    /*
    #pragma omp parallel for schedule(dynamic, 100)
    for(int i = 0; i < itemCount; i++) {

        ItemData newData;
        newData.item = new KFileItem(items.at(i));
//        newData.collationSequence = new CNaturalString(newData.item->name().toAscii().constData());
        newData.modelIndex = m_model->createIndex(i, 0);
        #pragma omp critical
        m_itemList.append(newData);
    }

    #pragma omp parallel for schedule(dynamic, 100)
    for(int i = 0; i < itemCount; i++) {

        ItemData * newData = &m_itemList[iBase + i];
        newData->collationSequence = new CNaturalString(newData->item->name().toAscii().constData());
    }
    */

    for(int i = 0; i < itemCount; i++) {

        ItemData newData;
        newData.item = new KFileItem(items.at(i));
        newData.collationSequence = new CNaturalString(newData.item->name().toAscii().constData());
        newData.modelIndex = m_model->createIndex(i, 0);
        m_itemList.append(newData);
    }

    qDebug() << "Time elapsed:" << time.elapsed() << "ms";
    rowCount = m_itemList.count();

//    std::sort(m_itemList.begin(), m_itemList.end(), lessThan);
//    qSort(m_itemList.begin(), m_itemList.end(), lessThan);
    m_model->endInsertRows();

    emit m_model->layoutChanged();


    // Move the current index to the last inserted item.
    ItemData lastItem = m_itemList.last();
    m_currentIndex = lastItem.modelIndex;

    qDebug() << "KDirModelV2Private::newItemsFromLister rowCount:" << rowCount;
}

void  ThumbView::slCheckForUpdate( KFileItem *kfit )
{
   if( ! kfit ) return;

   kdDebug(28000) << "Checking for update of thumbview!" << endl;

   KURL searchUrl = kfit->url();
   bool haveItem = false;

   /* iterate over all icon items and compare urls.
    * TODO: Check the parent url to avoid iteration over all */
   for ( QIconViewItem *item = m_iconView->firstItem(); item && !haveItem;
	 item = item->nextItem() )
   {
      if( searchUrl == static_cast<ThumbViewItem*>(item)->itemUrl() )
      {
	 haveItem = true;
      }
   }

   /* if we still do not have the item, it is not in the thumbview. */
   if( ! haveItem )
   {
      KFileItemList kfiList;

      kfiList.append( kfit );
      slNewFileItems( kfiList );
   }

}

void KrPreviewJob::slotStartJob()
{
    ASSERT(_job == 0);
    ASSERT(!_scheduled.isEmpty());

    _hash.clear();
    sort();

    int size = _parent->_view->fileIconSize();

    KFileItemList list;
    for(int i = 0; i < _scheduled.count() && i < MAX_CHUNK_SIZE; i++) {
        KFileItem fi(_scheduled[i]->getVfile()->vfile_getUrl(), 0, 0);
        list.append(fi);
        _hash.insert(fi, _scheduled[i]);
    }
    QStringList allPlugins = KIO::PreviewJob::availablePlugins();
    _job = new KIO::PreviewJob(list, QSize(size, size), &allPlugins);
    _job->setOverlayIconAlpha(0);
    _job->setOverlayIconSize(0);
    _job->setScaleType(KIO::PreviewJob::ScaledAndCached);
    connect(_job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)), SLOT(slotGotPreview(const KFileItem&, const QPixmap&)));
    connect(_job, SIGNAL(failed(const KFileItem&)), SLOT(slotFailed(const KFileItem&)));
    connect(_job, SIGNAL(result(KJob*)), SLOT(slotJobResult(KJob*)));
}

KoRecentDocumentsPane::KoRecentDocumentsPane(QWidget* parent, const KComponentData &_componentData,
        const QString& header)
        : KoDetailsPane(parent, _componentData, header)
        , d(new KoRecentDocumentsPanePrivate)
{
    setFocusProxy(m_documentList);
    KGuiItem openGItem(i18n("Open This Document"), "document-open");
    m_openButton->setGuiItem(openGItem);
    m_alwaysUseCheckBox->hide();

    model()->setSortRole(0); // Disable sorting

    KConfigGroup config(componentData().config(), "RecentFiles");

    int i = 1;
    QString path;
    KFileItemList fileList;
    QStandardItem* rootItem = model()->invisibleRootItem();

    do {
        path = config.readPathEntry(QString("File%1").arg(i), QString());

        if (!path.isEmpty()) {
            QString name = config.readPathEntry(QString("Name%1").arg(i), QString());

            KUrl url(path);

            if (name.isEmpty())
                name = url.fileName();

            if (!url.isLocalFile() || QFile::exists(url.toLocalFile())) {
                KFileItem fileItem(KFileItem::Unknown, KFileItem::Unknown, url);
                fileList.prepend(fileItem);
                //center all icons in 64x64 area
                QImage icon = fileItem.pixmap(64).toImage();
                icon = icon.convertToFormat(QImage::Format_ARGB32);
                icon = icon.copy((icon.width() - 64) / 2, (icon.height() - 64) / 2, 64, 64);
                KoFileListItem* item = new KoFileListItem(QPixmap::fromImage(icon), name);
                item->setEditable(false);
                item->setData(fileItem.pixmap(128), Qt::UserRole);
                item->setFileItem(fileItem);
                rootItem->insertRow(0, item);
            }
        }

        i++;
    } while (!path.isEmpty() || i <= 10);


    //Select the first file
    QModelIndex firstIndex = model()->indexFromItem(model()->item(0));
    m_documentList->selectionModel()->select(firstIndex, QItemSelectionModel::Select);
    m_documentList->selectionModel()->setCurrentIndex(firstIndex, QItemSelectionModel::Select);

    d->m_previewJob = KIO::filePreview(fileList, QSize(200, 200), 0);

    connect(d->m_previewJob, SIGNAL(result(KJob*)), this, SLOT(previewResult(KJob*)));
    connect(d->m_previewJob, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
            this, SLOT(updatePreview(const KFileItem&, const QPixmap&)));
}

KoRecentDocumentsPane::KoRecentDocumentsPane(QWidget* parent, const KComponentData &_componentData,
        const QString& header)
        : KoDetailsPane(parent, _componentData, header)
        , d(new KoRecentDocumentsPanePrivate)
{
    setFocusProxy(m_documentList);
    KGuiItem openGItem(i18n("Open This Document"), koIconName("document-open"));
    m_openButton->setGuiItem(openGItem);
    m_alwaysUseCheckBox->hide();

    model()->setSortRole(0); // Disable sorting

    KConfigGroup config(componentData().config(), "RecentFiles");

    int i = 1;
    QString path;
    KFileItemList fileList;
    QStandardItem* rootItem = model()->invisibleRootItem();

    do {
        path = config.readPathEntry(QString("File%1").arg(i), QString());

        if (!path.isEmpty()) {
            QString name = config.readPathEntry(QString("Name%1").arg(i), QString());

            QUrl url(path);

            if (name.isEmpty())
                name = url.fileName();

            if (!url.isLocalFile() || QFile::exists(url.toLocalFile())) {
                KFileItem fileItem(KFileItem::Unknown, KFileItem::Unknown, url);
                fileList.prepend(fileItem);
                const QIcon icon = QIcon::fromTheme(fileItem.iconName());
                KoFileListItem* item = new KoFileListItem(icon, name, fileItem);
                item->setEditable(false);
                rootItem->insertRow(0, item);
            }
        }

        i++;
    } while (!path.isEmpty() || i <= 10);


    //Select the first file
    QModelIndex firstIndex = model()->indexFromItem(model()->item(0));
    m_documentList->selectionModel()->select(firstIndex, QItemSelectionModel::Select);
    m_documentList->selectionModel()->setCurrentIndex(firstIndex, QItemSelectionModel::Select);

    QStringList availablePlugins = KIO::PreviewJob::availablePlugins();
    KIO::PreviewJob *previewJob = KIO::filePreview(fileList, QSize(IconExtent, IconExtent), &availablePlugins);

    d->m_previewJobs.append(previewJob);
    connect(previewJob, SIGNAL(result(KJob*)), SLOT(previewResult(KJob*)));
    connect(previewJob, SIGNAL(gotPreview(KFileItem,QPixmap)),
            SLOT(updateIcon(KFileItem,QPixmap)));
}

void FileBrowserWidget::emitFileSelectedSignal()
{
	KFileItemList itemList = m_dirOperator->selectedItems();
	for(KFileItemList::iterator it = itemList.begin(); it != itemList.end(); ++it) {
		emit(fileSelected(*it));
	}

	m_dirOperator->view()->clearSelection();
}

void PreviewTest::slotGenerate()
{
    KFileItemList items;
    items.append(KFileItem(QUrl::fromUserInput(m_url->text())));

    KIO::PreviewJob *job = KIO::filePreview(items, QSize(m_preview->width(), m_preview->height()));
    connect(job, SIGNAL(result(KJob*)), SLOT(slotResult(KJob*)));
    connect(job, SIGNAL(gotPreview(KFileItem,QPixmap)), SLOT(slotPreview(KFileItem,QPixmap)));
    connect(job, SIGNAL(failed(KFileItem)), SLOT(slotFailed()));
}

// caller needs to delete the returned list!
static KFileItemList * fileItemList( const TDECmdLineArgs *args )
{
    KFileItemList * items = new KFileItemList();
    items->setAutoDelete( true );
    for ( int i = 0; i < args->count(); i++ )
        items->append( new KFileItem( KFileItem::Unknown,
                                     KFileItem::Unknown,
                                     args->url( i ) ));
    return items;
}

void
SearchPane::searchMatches( const KFileItemList &list )
{
    for( KFileItemList::ConstIterator it = list.begin(), end = list.end(); it != end; ++it ) {
        if( (*it)->isDir() )
            m_dirs += (*it)->url();
        else if( m_filter.exactMatch( (*it)->name() ) )
            new KURLView::Item( (*it)->url(), static_cast<KURLView*>( m_listView ) );
    }
}