C++ Ptr::isDefault方法代码示例

void KMimeTypeTest::testByName()
{
    KMimeType::Ptr s0 = KMimeType::mimeType("application/x-zerosize");
    QVERIFY(s0);
    QCOMPARE(s0->name(), QString::fromLatin1("application/x-zerosize"));
    QCOMPARE(s0->comment(), QString::fromLatin1("empty document"));

    KMimeType::Ptr s0Again = KMimeType::mimeType("application/x-zerosize");
    QCOMPARE(s0Again->name(), s0->name());
    QVERIFY(s0Again != s0);

    KMimeType::Ptr s1 = KMimeType::mimeType("text/plain");
    QVERIFY(s1);
    QCOMPARE(s1->name(), QString::fromLatin1("text/plain"));
    //qDebug("Comment is %s", qPrintable(s1->comment()) );

    KMimeType::Ptr krita = KMimeType::mimeType("application/x-krita");
    QVERIFY(krita);

    // Test <comment> parsing with application/rdf+xml which has the english comment after the other ones
    KMimeType::Ptr rdf = KMimeType::mimeType("application/rdf+xml");
    QVERIFY(rdf);
    QCOMPARE(rdf->comment(), QString::fromLatin1("RDF file"));

    KMimeType::Ptr bzip2 = KMimeType::mimeType("application/x-bzip2");
    QVERIFY(bzip2);
    QCOMPARE(bzip2->comment(), QString::fromLatin1("Bzip archive"));

    KMimeType::Ptr defaultMime = KMimeType::mimeType("application/octet-stream");
    QVERIFY(defaultMime);
    QVERIFY(defaultMime->isDefault());
}

void URLGrabber::matchingMimeActions(const QString& clipData)
{
    KUrl url(clipData);
    KConfigGroup cg(KGlobal::config(), "Actions");
    if(!cg.readEntry("EnableMagicMimeActions",true)) {
        //kDebug() << "skipping mime magic due to configuration";
        return;
    }
    if(!url.isValid()) {
        //kDebug() << "skipping mime magic due to invalid url";
        return;
    }
    if(url.isRelative()) {  //openinng a relative path will just not work. what path should be used?
        //kDebug() << "skipping mime magic due to relative url";
        return;
    }
    if(url.isLocalFile()) {
        if ( clipData == "//") {
            //kDebug() << "skipping mime magic due to C++ comment //";
            return;
        }
        if(!QFile::exists(url.toLocalFile())) {
            //kDebug() << "skipping mime magic due to nonexistent localfile";
            return;
        }
    }

    // try to figure out if clipData contains a filename
    KMimeType::Ptr mimetype = KMimeType::findByUrl( url, 0,
                                                    false,
                                                    true /*fast mode*/ );

    // let's see if we found some reasonable mimetype.
    // If we do we'll populate menu with actions for apps
    // that can handle that mimetype

    // first: if clipboard contents starts with http, let's assume it's "text/html".
    // That is even if we've url like "http://www.kde.org/somescript.pl", we'll
    // still treat that as html page, because determining a mimetype using kio
    // might take a long time, and i want this function to be quick!
    if ( ( clipData.startsWith( QLatin1String("http://") ) || clipData.startsWith( QLatin1String("https://") ) )
         && mimetype->name() != "text/html" )
    {
        // use a fake path to create a mimetype that corresponds to "text/html"
        mimetype = KMimeType::findByPath( "/tmp/klipper.html", 0, true /*fast mode*/ );
    }

    if ( !mimetype->isDefault() ) {
        ClipAction* action = new ClipAction( QString(), mimetype->comment() );
        KService::List lst = KMimeTypeTrader::self()->query( mimetype->name(), "Application" );
        foreach( const KService::Ptr &service, lst ) {
            QHash<QChar,QString> map;
            map.insert( 'i', "--icon " + service->icon() );
            map.insert( 'c', service->name() );

            QString exec = service->exec();
            exec = KMacroExpander::expandMacros( exec, map ).trimmed();

            action->addCommand( ClipCommand( exec, service->name(), true, service->icon() ) );
        }

void BinaryWidget::setData( const QByteArray &data )
{
  delete mMainWidget;

  QString mimetype;
  KMimeType::Ptr mime = KMimeType::findByContent( data );
  if ( mime && !mime->isDefault() )
    mimetype = mime->name();

  if ( !mimetype.isEmpty() ) {
    KParts::ReadOnlyPart *part = KParts::ComponentFactory::createPartInstanceFromQuery<KParts::ReadOnlyPart>( mimetype, QString(), this, this );
    if ( part ) {
      KTemporaryFile file;
      file.setAutoRemove(false);
      file.open();
      file.write( data );
      file.flush();
      part->openUrl( KUrl( file.fileName() ) );
      mMainWidget = part->widget();
    } else {
      mMainWidget = new QLabel( i18n( "No part found for visualization of mimetype %1", mimetype ), this );
    }

    mData = data;
    mSaveButton->setEnabled( true );
  } else {
    mMainWidget = new QLabel( i18n( "Got data of unknown mimetype" ), this );
  }

  mLayout->addWidget( mMainWidget, 0, 0, 3, 1);
  mMainWidget->show();
}

static KMimeType::Ptr fixupMimeType (const QString& mimeType, const QString& fileName)
{
    KMimeType::Ptr mime = KMimeType::mimeType(mimeType, KMimeType::ResolveAliases);
    if ((!mime || mime->isDefault()) && !fileName.isEmpty()) {
        mime = KMimeType::findByUrl(fileName, 0, false, true);
    }
    return mime;
}

void removeExistingExtensions( QString &extension )
{
    QStringList filtered;
    const QStringList exts = extension.split( ',' );
    for ( QStringList::const_iterator it=exts.constBegin(); it!=exts.constEnd(); ++it ) {
        QString ext = (*it).trimmed();
        if ( ext == "*" ) // some plugins have that, but we don't want to associate a mimetype with *.*!
            continue;

        KMimeType::Ptr mime = KMimeType::findByUrl( KUrl("file:///foo."+ext ),
                                                    0, true, true );
        if( mime->isDefault() ||
            mime->comment().startsWith("Netscape") ) {
            kDebug() << "accepted";
            filtered.append( ext );
        }
    }

    extension = filtered.join( "," );
}

KService::Ptr ArkViewer::getViewer(const KMimeType::Ptr &mimeType)
{
    // No point in even trying to find anything for application/octet-stream
    if (mimeType->isDefault()) {
        return KService::Ptr();
    }

    // Try to get a read-only kpart for the internal viewer
    KService::List offers = KMimeTypeTrader::self()->query(mimeType->name(), QString::fromLatin1("KParts/ReadOnlyPart"));

    // If we can't find a kpart, try to get an external application
    if (offers.size() == 0) {
        offers = KMimeTypeTrader::self()->query(mimeType->name(), QString::fromLatin1("Application"));
    }

    if (offers.size() > 0) {
        return offers.first();
    } else {
        return KService::Ptr();
    }
}

QObject* KWebPluginFactory::create(const QString& _mimeType, const QUrl& url, const QStringList& argumentNames, const QStringList& argumentValues) const
{
    // Only attempt to find a KPart for the supported mime types...
    QVariantList arguments;
    const int count = argumentNames.count();

    for (int i = 0; i < count; ++i) {
        arguments << QString(argumentNames.at(i) + QL1S("=\"") + argumentValues.at(i) + QL1C('\"'));
    }

    QString mimeType (_mimeType.trimmed());
    // If no mimetype is provided, we do our best to correctly determine it here...
    if (mimeType.isEmpty()) {
      kDebug(800) << "Looking up missing mimetype for plugin resource:" << url;
      const KUrl reqUrl (url);
      KMimeType::Ptr ptr = KMimeType::findByUrl(reqUrl, 0, reqUrl.isLocalFile());
      if (ptr->isDefault())
          mimeType = ptr->name();

       // Disregard inode/* mime-types...
       if (mimeType.startsWith(QLatin1String("inode/"), Qt::CaseInsensitive))
          mimeType.clear();
       kDebug(800) << "Updated mimetype to" << mimeType;
    }

    KParts::ReadOnlyPart* part = 0;

    // Defer handling of flash content to QtWebKit's builtin viewer.
    // If you want to use/test KDE's nspluginviewer, comment out the
    // if statement below.
    if (!mimeType.isEmpty() && !excludedMimeType(mimeType))
        part = KMimeTypeTrader::createPartInstanceFromQuery<KParts::ReadOnlyPart>(mimeType, 0, parent(), QString(), arguments);

    kDebug(800) << "Asked for" << mimeType << "plugin, got" << part;

    if (part) {
        QMap<QString, QString> metaData = part->arguments().metaData();
        QString urlStr = url.toString(QUrl::RemovePath | QUrl::RemoveQuery | QUrl::RemoveFragment);
        metaData.insert("PropagateHttpHeader", "true");
        metaData.insert("referrer", urlStr);
        metaData.insert("cross-domain", urlStr);
        metaData.insert("main_frame_request", "TRUE");
        metaData.insert("ssl_activate_warnings", "TRUE");

        KWebPage *page = qobject_cast<KWebPage *>(parent());

        if (page) {
            const QString scheme = page->mainFrame()->url().scheme();
            if (page && (QString::compare(scheme, QL1S("https"), Qt::CaseInsensitive) == 0 ||
                         QString::compare(scheme, QL1S("webdavs"), Qt::CaseInsensitive) == 0))
              metaData.insert("ssl_was_in_use", "TRUE");
            else
              metaData.insert("ssl_was_in_use", "FALSE");
        }

        KParts::OpenUrlArguments openUrlArgs = part->arguments();
        openUrlArgs.metaData() = metaData;
        openUrlArgs.setMimeType(mimeType);
        part->setArguments(openUrlArgs);
        part->openUrl(url);
        return part->widget();
    }

    return 0;
}

void ArkViewer::view(const QString& fileName, QWidget *parent)
{
    KMimeType::Ptr mimeType = KMimeType::findByPath(fileName);
    kDebug() << "MIME type" << mimeType->name();
    KService::Ptr viewer = ArkViewer::getViewer(mimeType);

    const bool needsExternalViewer = (!viewer.isNull() &&
                                      !viewer->hasServiceType(QLatin1String("KParts/ReadOnlyPart")));
    if (needsExternalViewer) {
        // We have already resolved the MIME type and the service above.
        // So there is no point in using KRun::runUrl() which would need
        // to do the same again.

        const KUrl::List fileUrlList = KUrl(fileName);
        // The last argument (tempFiles) set to true means that the temporary
        // file will be removed when the viewer application exits.
        KRun::run(*viewer, fileUrlList, parent, true);
        return;
    }

    bool viewInInternalViewer = true;
    if (viewer.isNull()) {
        // No internal viewer available for the file.  Ask the user if it
        // should be previewed as text/plain.

        int response;
        if (!mimeType->isDefault()) {
            // File has a defined MIME type, and not the default
            // application/octet-stream.  So it could be viewable as
            // plain text, ask the user.
            response = KMessageBox::warningContinueCancel(parent,
                i18n("The internal viewer cannot preview this type of file<nl/>(%1).<nl/><nl/>Do you want to try to view it as plain text?", mimeType->name()),
                i18nc("@title:window", "Cannot Preview File"),
                KGuiItem(i18nc("@action:button", "Preview as Text"), KIcon(QLatin1String("text-plain"))),
                KStandardGuiItem::cancel(),
                QString(QLatin1String("PreviewAsText_%1")).arg(mimeType->name()));
        }
        else {
            // No defined MIME type, or the default application/octet-stream.
            // There is still a possibility that it could be viewable as plain
            // text, so ask the user.  Not the same as the message/question
            // above, because the wording and default are different.
            response = KMessageBox::warningContinueCancel(parent,
                i18n("The internal viewer cannot preview this unknown type of file.<nl/><nl/>Do you want to try to view it as plain text?"),
                i18nc("@title:window", "Cannot Preview File"),
                KGuiItem(i18nc("@action:button", "Preview as Text"), KIcon(QLatin1String("text-plain"))),
                KStandardGuiItem::cancel(),
                QString(),
                KMessageBox::Dangerous);
        }

        if (response == KMessageBox::Cancel) {
            viewInInternalViewer = false;
        }
        else {						// set for viewer later
            mimeType = KMimeType::mimeType(QLatin1String("text/plain"));
        }
    }

    if (viewInInternalViewer) {
        ArkViewer *internalViewer = new ArkViewer(parent, Qt::Window);
        if (internalViewer->viewInInternalViewer(fileName, mimeType)) {
            internalViewer->show();
            // The internal viewer is showing the file, and will
            // remove the temporary file in dialogClosed().  So there
            // is no more to do here.
            return;
        }
        else {
            KMessageBox::sorry(parent, i18n("The internal viewer cannot preview this file."));
            delete internalViewer;
        }
    }

    // Only get here if there is no internal viewer available or could be
    // used for the file, and no external viewer was opened.  Nothing can be
    // done with the temporary file, so remove it now.
    QFile::remove(fileName);
}