void ArkViewer::view(const QString& fileName)
{
QMimeDatabase db;
QMimeType mimeType = db.mimeTypeForFile(fileName);
qCDebug(ARK) << "viewing" << fileName << "with mime type:" << mimeType.name();
KService::Ptr viewer = ArkViewer::getViewer(mimeType.name());
const bool needsExternalViewer = (viewer &&
!viewer->hasServiceType(QStringLiteral("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.
qCDebug(ARK) << "Using external viewer";
const QList<QUrl> fileUrlList = {QUrl::fromLocalFile(fileName)};
// The last argument (tempFiles) set to true means that the temporary
// file will be removed when the viewer application exits.
KRun::runService(*viewer, fileUrlList, nullptr, true);
return;
}
qCDebug(ARK) << "Attempting to use internal viewer";
bool viewInInternalViewer = true;
if (!viewer) {
// No internal viewer available for the file. Ask the user if it
// should be previewed as text/plain.
qCDebug(ARK) << "Internal viewer not available";
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(nullptr,
xi18n("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"), QIcon::fromTheme(QStringLiteral("text-plain"))),
KStandardGuiItem::cancel(),
QStringLiteral("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(nullptr,
xi18n("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"), QIcon::fromTheme(QStringLiteral("text-plain"))),
KStandardGuiItem::cancel(),
QString(),
KMessageBox::Dangerous);
}
if (response == KMessageBox::Cancel) {
viewInInternalViewer = false;
}
else { // set for viewer later
mimeType = db.mimeTypeForName(QStringLiteral("text/plain"));
}
}
if (viewInInternalViewer) {
qCDebug(ARK) << "Opening internal viewer";
ArkViewer *internalViewer = new ArkViewer();
internalViewer->show();
if (internalViewer->viewInInternalViewer(fileName, mimeType)) {
// The internal viewer is showing the file, and will
// remove the temporary file in its destructor. So there
// is no more to do here.
return;
}
else {
KMessageBox::sorry(nullptr, 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.
qCDebug(ARK) << "Removing temporary file:" << fileName;
QFile::remove(fileName);
}
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);
}
