diff --git a/src/ui/keyselectioncombo.cpp b/src/ui/keyselectioncombo.cpp
index 245c69f68..3e8560d05 100644
--- a/src/ui/keyselectioncombo.cpp
+++ b/src/ui/keyselectioncombo.cpp
@@ -1,541 +1,541 @@
 /*  This file is part of Kleopatra, the KDE keymanager
     SPDX-FileCopyrightText: 2016 Klarälvdalens Datakonsult AB
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "keyselectioncombo.h"
 #include <kleo_ui_debug.h>
 
 #include "kleo/dn.h"
 #include "models/keylist.h"
 #include "models/keylistmodel.h"
 #include "models/keylistsortfilterproxymodel.h"
 #include "models/keycache.h"
 #include "utils/formatting.h"
 #include "progressbar.h"
 #include "kleo/defaultkeyfilter.h"
 
 #include <gpgme++/key.h>
 
 #include <QSortFilterProxyModel>
 #include <QVector>
 #include <QTimer>
 
 #include <KLocalizedString>
 
 using namespace Kleo;
 
 Q_DECLARE_METATYPE(GpgME::Key)
 
 namespace
 {
 class ProxyModel : public QSortFilterProxyModel
 {
     Q_OBJECT
 
 private:
     struct CustomItem {
         QIcon icon;
         QString text;
         QVariant data;
         QString toolTip;
     };
 public:
     ProxyModel(QObject *parent = nullptr)
         : QSortFilterProxyModel(parent)
     {
     }
 
     ~ProxyModel() override
     {
         qDeleteAll(mFrontItems);
         qDeleteAll(mBackItems);
     }
 
     bool lessThan(const QModelIndex &left, const QModelIndex &right) const override
     {
         const auto leftKey =  sourceModel()->data(left, KeyList::KeyRole).value<GpgME::Key>();
         const auto rightKey = sourceModel()->data(right, KeyList::KeyRole).value<GpgME::Key>();
         if (leftKey.isNull()) {
             return false;
         }
         if (rightKey.isNull()) {
             return true;
         }
         // As we display UID(0) this is ok. We probably need a get Best UID at some point.
         const auto lUid = leftKey.userID(0);
         const auto rUid = rightKey.userID(0);
         if (lUid.isNull()) {
             return false;
         }
         if (rUid.isNull()) {
             return true;
         }
         int cmp = strcmp (lUid.id(), rUid.id());
         if (cmp) {
             return cmp < 0;
         }
 
         if (lUid.validity() == rUid.validity()) {
             /* Both are the same check which one is newer. */
             time_t oldTime = 0;
             for (const GpgME::Subkey &s: leftKey.subkeys()) {
                 if (s.isRevoked() || s.isInvalid() || s.isDisabled()) {
                     continue;
                 }
                 if (s.creationTime() > oldTime) {
                     oldTime= s.creationTime();
                 }
             }
             time_t newTime = 0;
             for (const GpgME::Subkey &s: rightKey.subkeys()) {
                 if (s.isRevoked() || s.isInvalid() || s.isDisabled()) {
                     continue;
                 }
                 if (s.creationTime() > newTime) {
                     newTime = s.creationTime();
                 }
             }
             return newTime < oldTime;
         }
         return lUid.validity() > rUid.validity();
     }
 
     bool isCustomItem(const int row) const
     {
         return row < mFrontItems.count() || row >= mFrontItems.count() + QSortFilterProxyModel::rowCount();
     }
 
     void prependItem(const QIcon &icon, const QString &text, const QVariant &data, const QString &toolTip)
     {
         beginInsertRows(QModelIndex(), 0, 0);
         mFrontItems.push_front(new CustomItem{ icon, text, data, toolTip });
         endInsertRows();
     }
 
     void appendItem(const QIcon &icon, const QString &text, const QVariant &data, const QString &toolTip)
     {
         beginInsertRows(QModelIndex(), rowCount(), rowCount());
         mBackItems.push_back(new CustomItem{ icon, text, data, toolTip });
         endInsertRows();
     }
 
     void removeCustomItem(const QVariant &data)
     {
         for (int i = 0; i < mFrontItems.count(); ++i) {
             if (mFrontItems[i]->data == data) {
                 beginRemoveRows(QModelIndex(), i, i);
                 delete mFrontItems.takeAt(i);
                 endRemoveRows();
                 return;
             }
         }
         for (int i = 0; i < mBackItems.count(); ++i) {
             if (mBackItems[i]->data == data) {
                 const int index = mFrontItems.count() + QSortFilterProxyModel::rowCount() + i;
                 beginRemoveRows(QModelIndex(), index, index);
                 delete mBackItems.takeAt(i);
                 endRemoveRows();
                 return;
             }
         }
     }
 
     int rowCount(const QModelIndex &parent = QModelIndex()) const override
     {
         return mFrontItems.count() + QSortFilterProxyModel::rowCount(parent) + mBackItems.count();
     }
 
     QModelIndex mapToSource(const QModelIndex &index) const override
     {
         if (!isCustomItem(index.row())) {
             const int row = index.row() - mFrontItems.count();
 
             return sourceModel()->index(row, index.column());
         } else {
             return {};
         }
     }
 
     QModelIndex mapFromSource(const QModelIndex &source_index) const override
     {
         const QModelIndex idx = QSortFilterProxyModel::mapFromSource(source_index);
         return createIndex(mFrontItems.count() + idx.row(), idx.column(), idx.internalPointer());
     }
 
     QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override
     {
         if (row < 0 || row >= rowCount()) {
             return {};
         }
         if (row < mFrontItems.count()) {
             return createIndex(row, column, mFrontItems[row]);
         } else if (row >= mFrontItems.count() + QSortFilterProxyModel::rowCount()) {
             return createIndex(row, column, mBackItems[row - mFrontItems.count() - QSortFilterProxyModel::rowCount()]);
         } else {
             const QModelIndex mi = QSortFilterProxyModel::index(row - mFrontItems.count(), column, parent);
             return createIndex(row, column, mi.internalPointer());
         }
     }
 
     Qt::ItemFlags flags(const QModelIndex &index) const override
     {
         Q_UNUSED(index)
         return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemNeverHasChildren;
     }
 
     QModelIndex parent(const QModelIndex &) const override
     {
         // Flat list
         return {};
     }
 
     QVariant data(const QModelIndex &index, int role) const override
     {
         if (!index.isValid()) {
             return QVariant();
         }
 
         if (isCustomItem(index.row())) {
             Q_ASSERT(!mFrontItems.isEmpty() || !mBackItems.isEmpty());
             auto ci = static_cast<CustomItem*>(index.internalPointer());
             switch (role) {
             case Qt::DisplayRole:
                 return ci->text;
             case Qt::DecorationRole:
                 return ci->icon;
             case Qt::UserRole:
                 return ci->data;
             case Qt::ToolTipRole:
                 return ci->toolTip;
             default:
                 return QVariant();
             }
         }
 
         const auto key = QSortFilterProxyModel::data(index, KeyList::KeyRole).value<GpgME::Key>();
         Q_ASSERT(!key.isNull());
         if (key.isNull()) {
             return QVariant();
         }
 
         switch (role) {
         case Qt::DisplayRole: {
             const auto userID = key.userID(0);
             QString name, email;
 
             if (key.protocol() == GpgME::OpenPGP) {
                 name = QString::fromUtf8(userID.name());
                 email = QString::fromUtf8(userID.email());
             } else {
                 const Kleo::DN dn(userID.id());
                 name = dn[QStringLiteral("CN")];
                 email = dn[QStringLiteral("EMAIL")];
             }
             return i18nc("Name <email> (validity, type, created: date)", "%1 (%2, %3 created: %4)",
                          email.isEmpty() ? name : name.isEmpty() ? email : i18nc("Name <email>", "%1 <%2>", name, email),
                          Kleo::Formatting::complianceStringShort(key),
                          Kleo::KeyCache::instance()->pgpOnly() ? QString() :
                             key.protocol() == GpgME::OpenPGP ? i18n("OpenPGP") + QLatin1Char(',') : i18n("S/MIME") + QLatin1Char(','),
                          Kleo::Formatting::creationDateString(key));
         }
         case Qt::ToolTipRole:
             return Kleo::Formatting::toolTip(key, Kleo::Formatting::Validity |
                                                   Kleo::Formatting::Issuer |
                                                   Kleo::Formatting::Subject |
                                                   Kleo::Formatting::Fingerprint |
                                                   Kleo::Formatting::ExpiryDates |
                                                   Kleo::Formatting::UserIDs);
         case Qt::DecorationRole:
             return Kleo::Formatting::iconForUid(key.userID(0));
         default:
             return QSortFilterProxyModel::data(index, role);
         }
     }
 
 private:
     QVector<CustomItem*> mFrontItems;
     QVector<CustomItem*> mBackItems;
 };
 
 
 } // anonymous namespace
 
 namespace Kleo
 {
 class KeySelectionComboPrivate
 {
 public:
     KeySelectionComboPrivate(KeySelectionCombo *parent)
         : wasEnabled(true)
         , q(parent)
     {
     }
 
     /* Selects the first key with a UID addrSpec that matches
      * the mPerfectMatchMbox variable.
      *
      * The idea here is that if there are keys like:
      *
      * tom-store@abc.com
      * susi-store@abc.com
      * store@abc.com
      *
      * And the user wants to send a mail to "store@abc.com"
      * the filter should still show tom and susi (because they
      * both are part of store) but the key for "store" should
      * be preselected.
      *
      * Returns true if one was selected. False otherwise. */
     bool selectPerfectIdMatch() const
     {
         if (mPerfectMatchMbox.isEmpty()) {
             return false;
         }
 
         for (int i = 0; i < proxyModel->rowCount(); ++i) {
             const auto idx = proxyModel->index(i, 0, QModelIndex());
             const auto key = proxyModel->data(idx, KeyList::KeyRole).value<GpgME::Key>();
             if (key.isNull()) {
                 // WTF?
                 continue;
             }
             for (const auto &uid: key.userIDs()) {
                 if (QString::fromStdString(uid.addrSpec()) == mPerfectMatchMbox) {
                     q->setCurrentIndex(i);
                     return true;
                 }
             }
         }
         return false;
     }
 
     /* Updates the current key with the default key if the key matches
      * the current key filter. */
     void updateWithDefaultKey() const {
         GpgME::Protocol filterProto = GpgME::UnknownProtocol;
 
         const auto filter = dynamic_cast<const DefaultKeyFilter*> (sortFilterProxy->keyFilter().get());
         if (filter && filter->isOpenPGP() == DefaultKeyFilter::Set) {
             filterProto = GpgME::OpenPGP;
         } else if (filter && filter->isOpenPGP() == DefaultKeyFilter::NotSet) {
             filterProto = GpgME::CMS;
         }
 
         QString defaultKey = defaultKeys.value (filterProto);
         if (defaultKey.isEmpty()) {
             // Fallback to unknown protocol
             defaultKey = defaultKeys.value (GpgME::UnknownProtocol);
         }
         q->setCurrentKey(defaultKey);
     }
 
     Kleo::AbstractKeyListModel *model = nullptr;
     Kleo::KeyListSortFilterProxyModel *sortFilterProxy = nullptr;
     ProxyModel *proxyModel = nullptr;
     std::shared_ptr<Kleo::KeyCache> cache;
     QMap<GpgME::Protocol, QString> defaultKeys;
     bool wasEnabled = false;
     bool useWasEnabled = false;
     bool secretOnly;
     QString mPerfectMatchMbox;
 
 private:
     KeySelectionCombo * const q;
 };
 
 }
 
 using namespace Kleo;
 
 KeySelectionCombo::KeySelectionCombo(QWidget* parent)
     : KeySelectionCombo(true, parent)
 {}
 
 KeySelectionCombo::KeySelectionCombo(bool secretOnly, QWidget* parent)
     : QComboBox(parent)
     , d(new KeySelectionComboPrivate(this))
 {
     d->model = Kleo::AbstractKeyListModel::createFlatKeyListModel(this);
     d->secretOnly = secretOnly;
 
     d->sortFilterProxy = new Kleo::KeyListSortFilterProxyModel(this);
     d->sortFilterProxy->setSourceModel(d->model);
 
     d->proxyModel = new ProxyModel(this);
     d->proxyModel->setSourceModel(d->sortFilterProxy);
 
     setModel(d->proxyModel);
-    connect(this, static_cast<void(KeySelectionCombo::*)(int)>(&KeySelectionCombo::currentIndexChanged),
+    connect(this, QOverload<int>::of(&QComboBox::currentIndexChanged),
             this, [this](int row) {
                 if (row >= 0 && row < d->proxyModel->rowCount()) {
                     if (d->proxyModel->isCustomItem(row)) {
                         Q_EMIT customItemSelected(d->proxyModel->index(row, 0).data(Qt::UserRole));
                     } else {
                         Q_EMIT currentKeyChanged(currentKey());
                     }
                 }
             });
 
     d->cache = Kleo::KeyCache::mutableInstance();
 
     QTimer::singleShot(0, this, &KeySelectionCombo::init);
 }
 
 KeySelectionCombo::~KeySelectionCombo()
 {
     delete d;
 }
 
 void KeySelectionCombo::init()
 {
     connect(d->cache.get(), &Kleo::KeyCache::keyListingDone,
             this, [this]() {
                     // Set useKeyCache ensures that the cache is populated
                     // so this can be a blocking call if the cache is not initialized 
                     d->model->useKeyCache(true, d->secretOnly ? KeyList::SecretKeysOnly : KeyList::AllKeys);
                     d->proxyModel->removeCustomItem(QStringLiteral("-libkleo-loading-keys"));
 
                     // We use the useWasEnabled state variable to decide if we should
                     // change the enable / disable state based on the keylist done signal.
                     // If we triggered the refresh useWasEnabled is true and we want to
                     // enable / disable again after our refresh, as the refresh disabled it.
                     //
                     // But if a keyListingDone signal comes from just a generic refresh
                     // triggered by someone else we don't want to change the enable / disable
                     // state.
                     if (d->useWasEnabled) {
                         setEnabled(d->wasEnabled);
                         d->useWasEnabled = false;
                     }
                     Q_EMIT keyListingFinished();
             });
 
     connect(this, &KeySelectionCombo::keyListingFinished, this, [this]() {
             d->updateWithDefaultKey();
         });
 
     if (!d->cache->initialized()) {
         refreshKeys();
     } else {
         d->model->useKeyCache(true, d->secretOnly ? KeyList::SecretKeysOnly : KeyList::AllKeys);
         Q_EMIT keyListingFinished();
     }
 
     connect(this, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [this] () {
             setToolTip(currentData(Qt::ToolTipRole).toString());
         });
 }
 
 
 void KeySelectionCombo::setKeyFilter(const std::shared_ptr<const KeyFilter> &kf)
 {
     d->sortFilterProxy->setKeyFilter(kf);
     d->proxyModel->sort(0);
     d->updateWithDefaultKey();
 }
 
 std::shared_ptr<const KeyFilter> KeySelectionCombo::keyFilter() const
 {
     return d->sortFilterProxy->keyFilter();
 }
 
 void KeySelectionCombo::setIdFilter(const QString &id)
 {
     d->sortFilterProxy->setFilterRegExp(id);
     d->mPerfectMatchMbox = id;
     d->updateWithDefaultKey();
 }
 
 QString KeySelectionCombo::idFilter() const
 {
     return d->sortFilterProxy->filterRegExp().pattern();
 }
 
 GpgME::Key Kleo::KeySelectionCombo::currentKey() const
 {
     return currentData(KeyList::KeyRole).value<GpgME::Key>();
 }
 
 void Kleo::KeySelectionCombo::setCurrentKey(const GpgME::Key &key)
 {
     const int idx = findData(QVariant::fromValue(key), KeyList::KeyRole, Qt::MatchExactly);
     if (idx > -1) {
         setCurrentIndex(idx);
     } else {
         d->selectPerfectIdMatch();
     }
     setToolTip(currentData(Qt::ToolTipRole).toString());
 }
 
 void Kleo::KeySelectionCombo::setCurrentKey(const QString &fingerprint)
 {
     const auto cur = currentKey();
     if (!cur.isNull() && !fingerprint.isEmpty() &&
         fingerprint == QLatin1String(cur.primaryFingerprint())) {
         // Already set
         return;
     }
     const int idx = findData(fingerprint, KeyList::FingerprintRole, Qt::MatchExactly);
     if (idx > -1) {
         setCurrentIndex(idx);
     } else if (!d->selectPerfectIdMatch()) {
         setCurrentIndex(0);
     }
     setToolTip(currentData(Qt::ToolTipRole).toString());
 }
 
 void KeySelectionCombo::refreshKeys()
 {
     d->wasEnabled = isEnabled();
     d->useWasEnabled = true;
     setEnabled(false);
     const bool wasBlocked = blockSignals(true);
     prependCustomItem(QIcon(), i18n("Loading keys ..."), QStringLiteral("-libkleo-loading-keys"));
     setCurrentIndex(0);
     blockSignals(wasBlocked);
     d->cache->startKeyListing();
 }
 
 void KeySelectionCombo::appendCustomItem(const QIcon &icon, const QString &text, const QVariant &data, const QString &toolTip)
 {
     d->proxyModel->appendItem(icon, text, data, toolTip);
 }
 
 void KeySelectionCombo::appendCustomItem(const QIcon &icon, const QString &text, const QVariant &data)
 {
     appendCustomItem(icon, text, data, QString());
 }
 
 void KeySelectionCombo::prependCustomItem(const QIcon &icon, const QString &text, const QVariant &data, const QString &toolTip)
 {
     d->proxyModel->prependItem(icon, text, data, toolTip);
 }
 
 void KeySelectionCombo::prependCustomItem(const QIcon &icon, const QString &text, const QVariant &data)
 {
     prependCustomItem(icon, text, data, QString());
 }
 
 void Kleo::KeySelectionCombo::setDefaultKey(const QString &fingerprint, GpgME::Protocol proto)
 {
     d->defaultKeys.insert(proto, fingerprint);
     d->updateWithDefaultKey();
 }
 
 void Kleo::KeySelectionCombo::setDefaultKey(const QString &fingerprint)
 {
     setDefaultKey(fingerprint, GpgME::UnknownProtocol);
 }
 
 QString Kleo::KeySelectionCombo::defaultKey(GpgME::Protocol proto) const
 {
     return d->defaultKeys.value(proto);
 }
 
 QString Kleo::KeySelectionCombo::defaultKey() const
 {
     return defaultKey(GpgME::UnknownProtocol);
 }
 #include "keyselectioncombo.moc"
diff --git a/src/ui/keyselectiondialog.cpp b/src/ui/keyselectiondialog.cpp
index fdd58b7d2..9d2bf9205 100644
--- a/src/ui/keyselectiondialog.cpp
+++ b/src/ui/keyselectiondialog.cpp
@@ -1,980 +1,980 @@
 /*  -*- c++ -*-
     keyselectiondialog.cpp
 
     This file is part of libkleopatra, the KDE keymanagement library
     SPDX-FileCopyrightText: 2004 Klarälvdalens Datakonsult AB
 
     Based on kpgpui.cpp
     SPDX-FileCopyrightText: 2001, 2002 the KPGP authors
     See file libkdenetwork/AUTHORS.kpgp for details
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "keyselectiondialog.h"
 
 #include "keylistview.h"
 #include "progressdialog.h"
 
 #include "libkleo/dn.h"
 #include "kleo_ui_debug.h"
 
 // gpgme++
 #include <gpgme++/key.h>
 #include <gpgme++/keylistresult.h>
 
 #include <qgpgme/keylistjob.h>
 
 // KDE
 #include <KConfig>
 #include <KConfigGroup>
 #include <KLocalizedString>
 #include <KMessageBox>
 #include <KSharedConfig>
 
 // Qt
 #include <QApplication>
 #include <QCheckBox>
 #include <QDateTime>
 #include <QDialogButtonBox>
 #include <QFrame>
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QLineEdit>
 #include <QMenu>
 #include <QProcess>
 #include <QPushButton>
 #include <QRegExp>
 #include <QScrollBar>
 #include <QTimer>
 #include <QVBoxLayout>
 
 #include <algorithm>
 #include <iterator>
 #include <string.h>
 
 static bool checkKeyUsage(const GpgME::Key &key, unsigned int keyUsage, QString *statusString = nullptr)
 {
     auto setStatusString = [statusString](const QString &status) {
         if (statusString) {
             *statusString = status;
         }
     };
 
     if (keyUsage & Kleo::KeySelectionDialog::ValidKeys) {
         if (key.isInvalid()) {
             if (key.keyListMode() & GpgME::Validate) {
                 qCDebug(KLEO_UI_LOG) << "key is invalid";
                 setStatusString(i18n("The key is not valid."));
                 return false;
             } else {
                 qCDebug(KLEO_UI_LOG) << "key is invalid - ignoring";
             }
         }
         if (key.isExpired()) {
             qCDebug(KLEO_UI_LOG) << "key is expired";
             setStatusString(i18n("The key is expired."));
             return false;
         } else if (key.isRevoked()) {
             qCDebug(KLEO_UI_LOG) << "key is revoked";
             setStatusString(i18n("The key is revoked."));
             return false;
         } else if (key.isDisabled()) {
             qCDebug(KLEO_UI_LOG) << "key is disabled";
             setStatusString(i18n("The key is disabled."));
             return false;
         }
     }
 
     if (keyUsage & Kleo::KeySelectionDialog::EncryptionKeys &&
             !key.canEncrypt()) {
         qCDebug(KLEO_UI_LOG) << "key can't encrypt";
         setStatusString(i18n("The key is not designated for encryption."));
         return false;
     }
     if (keyUsage & Kleo::KeySelectionDialog::SigningKeys &&
             !key.canSign()) {
         qCDebug(KLEO_UI_LOG) << "key can't sign";
         setStatusString(i18n("The key is not designated for signing."));
         return false;
     }
     if (keyUsage & Kleo::KeySelectionDialog::CertificationKeys &&
             !key.canCertify()) {
         qCDebug(KLEO_UI_LOG) << "key can't certify";
         setStatusString(i18n("The key is not designated for certifying."));
         return false;
     }
     if (keyUsage & Kleo::KeySelectionDialog::AuthenticationKeys &&
             !key.canAuthenticate()) {
         qCDebug(KLEO_UI_LOG) << "key can't authenticate";
         setStatusString(i18n("The key is not designated for authentication."));
         return false;
     }
 
     if (keyUsage & Kleo::KeySelectionDialog::SecretKeys &&
             !(keyUsage & Kleo::KeySelectionDialog::PublicKeys) &&
             !key.hasSecret()) {
         qCDebug(KLEO_UI_LOG) << "key isn't secret";
         setStatusString(i18n("The key is not secret."));
         return false;
     }
 
     if (keyUsage & Kleo::KeySelectionDialog::TrustedKeys &&
             key.protocol() == GpgME::OpenPGP &&
             // only check this for secret keys for now.
             // Seems validity isn't checked for secret keylistings...
             !key.hasSecret()) {
         std::vector<GpgME::UserID> uids = key.userIDs();
         for (std::vector<GpgME::UserID>::const_iterator it = uids.begin(); it != uids.end(); ++it)
             if (!it->isRevoked() && it->validity() >= GpgME::UserID::Marginal) {
                 return true;
             }
         qCDebug(KLEO_UI_LOG) << "key has no UIDs with validity >= Marginal";
         setStatusString(i18n("The key is not trusted enough."));
         return false;
     }
     // X.509 keys are always trusted, else they won't be the keybox.
     // PENDING(marc) check that this ^ is correct
 
     setStatusString(i18n("The key can be used."));
     return true;
 }
 
 static bool checkKeyUsage(const std::vector<GpgME::Key> &keys, unsigned int keyUsage)
 {
     for (auto it = keys.begin(); it != keys.end(); ++it)
         if (!checkKeyUsage(*it, keyUsage)) {
             return false;
         }
     return true;
 }
 
 static inline QString time_t2string(time_t t)
 {
     QDateTime dt;
     dt.setTime_t(t);
     return dt.toString();
 }
 
 namespace
 {
 
 class ColumnStrategy : public Kleo::KeyListView::ColumnStrategy
 {
 public:
     ColumnStrategy(unsigned int keyUsage);
 
     QString title(int col) const override;
     int width(int col, const QFontMetrics &fm) const override;
 
     QString text(const GpgME::Key &key, int col) const override;
     QString toolTip(const GpgME::Key &key, int col) const override;
     QIcon icon(const GpgME::Key &key, int col) const override;
 
 private:
     const QIcon mKeyGoodPix, mKeyBadPix, mKeyUnknownPix, mKeyValidPix;
     const unsigned int mKeyUsage;
 };
 
 static QString iconPath(const QString &name)
 {
     return QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("libkleopatra/pics/") + name + QStringLiteral(".png"));
 }
 
 ColumnStrategy::ColumnStrategy(unsigned int keyUsage)
     : Kleo::KeyListView::ColumnStrategy(),
       mKeyGoodPix(iconPath(QStringLiteral("key_ok"))),
       mKeyBadPix(iconPath(QStringLiteral("key_bad"))),
       mKeyUnknownPix(iconPath(QStringLiteral("key_unknown"))),
       mKeyValidPix(iconPath(QStringLiteral("key"))),
       mKeyUsage(keyUsage)
 {
     if (keyUsage == 0)
         qCWarning(KLEO_UI_LOG)
                 << "KeySelectionDialog: keyUsage == 0. You want to use AllKeys instead.";
 }
 
 QString ColumnStrategy::title(int col) const
 {
     switch (col) {
     case 0: return i18n("Key ID");
     case 1: return i18n("User ID");
     default: return QString();
     }
 }
 
 int ColumnStrategy::width(int col, const QFontMetrics &fm) const
 {
     if (col == 0) {
         static const char hexchars[] = "0123456789ABCDEF";
         int maxWidth = 0;
         for (unsigned int i = 0; i < 16; ++i) {
             maxWidth = qMax(fm.boundingRect(QLatin1Char(hexchars[i])).width(), maxWidth);
         }
         return 8 * maxWidth + 2 * 16 /* KIconLoader::SizeSmall */;
     }
     return Kleo::KeyListView::ColumnStrategy::width(col, fm);
 }
 
 QString ColumnStrategy::text(const GpgME::Key &key, int col) const
 {
     switch (col) {
     case 0: {
         if (key.shortKeyID()) {
             return QString::fromUtf8(key.shortKeyID());
         } else {
             return xi18n("<placeholder>unknown</placeholder>");
         }
     }
     case 1: {
         const char *uid = key.userID(0).id();
         if (key.protocol() == GpgME::OpenPGP) {
             return uid && *uid ? QString::fromUtf8(uid) : QString();
         } else { // CMS
             return Kleo::DN(uid).prettyDN();
         }
     }
     default: return QString();
     }
 }
 
 QString ColumnStrategy::toolTip(const GpgME::Key &key, int) const
 {
     const char *uid = key.userID(0).id();
     const char *fpr = key.primaryFingerprint();
     const char *issuer = key.issuerName();
     const GpgME::Subkey subkey = key.subkey(0);
     const QString expiry = subkey.neverExpires() ? i18n("never") : time_t2string(subkey.expirationTime());
     const QString creation = time_t2string(subkey.creationTime());
     QString keyStatusString;
     if (!checkKeyUsage(key, mKeyUsage, &keyStatusString)) {
         // Show the status in bold if there is a problem
         keyStatusString = QLatin1String("<b>") % keyStatusString % QLatin1String("</b>");
     }
 
     QString html = QStringLiteral("<qt><p style=\"style='white-space:pre'\">");
     if (key.protocol() == GpgME::OpenPGP) {
         html += i18n("OpenPGP key for <b>%1</b>", uid ? QString::fromUtf8(uid) : i18n("unknown"));
     } else {
         html += i18n("S/MIME key for <b>%1</b>", uid ? Kleo::DN(uid).prettyDN() : i18n("unknown"));
     }
     html += QStringLiteral("</p><table>");
 
     const auto addRow = [&html](const QString &name, const QString &value) {
         html += QStringLiteral("<tr><td align=\"right\"><b>%1: </b></td><td>%2</td></tr>").arg(name, value);
     };
     addRow(i18nc("Key creation date", "Created"), creation);
     addRow(i18nc("Key Expiration date", "Expiry"), expiry);
     addRow(i18nc("Key fingerprint", "Fingerprint"), fpr ? QString::fromLatin1(fpr) : i18n("unknown"));
     if (key.protocol() != GpgME::OpenPGP) {
         addRow(i18nc("Key issuer", "Issuer"), issuer ? Kleo::DN(issuer).prettyDN() : i18n("unknown"));
     }
     addRow(i18nc("Key status", "Status"), keyStatusString);
     html += QStringLiteral("</table></qt>");
 
     return html;
 }
 
 QIcon ColumnStrategy::icon(const GpgME::Key &key, int col) const
 {
     if (col != 0) {
         return QIcon();
     }
     // this key did not undergo a validating keylisting yet:
     if (!(key.keyListMode() & GpgME::Validate)) {
         return mKeyUnknownPix;
     }
 
     if (!checkKeyUsage(key, mKeyUsage)) {
         return mKeyBadPix;
     }
 
     if (key.protocol() == GpgME::CMS) {
         return mKeyGoodPix;
     }
 
     switch (key.userID(0).validity()) {
     default:
     case GpgME::UserID::Unknown:
     case GpgME::UserID::Undefined:
         return mKeyUnknownPix;
     case GpgME::UserID::Never:
         return mKeyValidPix;
     case GpgME::UserID::Marginal:
     case GpgME::UserID::Full:
     case GpgME::UserID::Ultimate:
         return mKeyGoodPix;
     }
 }
 
 }
 
 static const int sCheckSelectionDelay = 250;
 
 Kleo::KeySelectionDialog::KeySelectionDialog(QWidget *parent, Options options)
     : QDialog(parent),
       mOpenPGPBackend(QGpgME::openpgp()),
       mSMIMEBackend(QGpgME::smime()),
       mKeyUsage(AllKeys)
 {
         qCDebug(KLEO_UI_LOG) << "mTruncated:" << mTruncated << "mSavedOffsetY:" << mSavedOffsetY;
     setUpUI(options, QString());
 }
 
 Kleo::KeySelectionDialog::KeySelectionDialog(const QString &title,
         const QString &text,
         const std::vector<GpgME::Key> &selectedKeys,
         unsigned int keyUsage,
         bool extendedSelection,
         bool rememberChoice,
         QWidget *parent,
         bool modal)
     : QDialog(parent),
       mSelectedKeys(selectedKeys),
       mKeyUsage(keyUsage)
 {
     setWindowTitle(title);
     setModal(modal);
     init(rememberChoice, extendedSelection, text, QString());
 }
 
 Kleo::KeySelectionDialog::KeySelectionDialog(const QString &title,
         const QString &text,
         const QString &initialQuery,
         const std::vector<GpgME::Key> &selectedKeys,
         unsigned int keyUsage,
         bool extendedSelection,
         bool rememberChoice,
         QWidget *parent,
         bool modal)
     : QDialog(parent),
       mSelectedKeys(selectedKeys),
       mKeyUsage(keyUsage),
       mSearchText(initialQuery),
       mInitialQuery(initialQuery)
 {
     setWindowTitle(title);
     setModal(modal);
     init(rememberChoice, extendedSelection, text, initialQuery);
 }
 
 Kleo::KeySelectionDialog::KeySelectionDialog(const QString &title,
         const QString &text,
         const QString &initialQuery,
         unsigned int keyUsage,
         bool extendedSelection,
         bool rememberChoice,
         QWidget *parent,
         bool modal)
     : QDialog(parent),
       mKeyUsage(keyUsage),
       mSearchText(initialQuery),
       mInitialQuery(initialQuery)
 {
     setWindowTitle(title);
     setModal(modal);
     init(rememberChoice, extendedSelection, text, initialQuery);
 }
 
 void Kleo::KeySelectionDialog::setUpUI(Options options, const QString &initialQuery)
 {
     auto mainLayout = new QVBoxLayout(this);
     QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this);
     mOkButton = buttonBox->button(QDialogButtonBox::Ok);
     mOkButton->setDefault(true);
     mOkButton->setShortcut(Qt::CTRL | Qt::Key_Return);
 
     mCheckSelectionTimer = new QTimer(this);
     mStartSearchTimer = new QTimer(this);
 
     QFrame *page = new QFrame(this);
     mainLayout->addWidget(page);
     mainLayout->addWidget(buttonBox);
 
     mTopLayout = new QVBoxLayout(page);
     mTopLayout->setContentsMargins(0, 0, 0, 0);
 
     mTextLabel = new QLabel(page);
     mTextLabel->setWordWrap(true);
 
     // Setting the size policy is necessary as a workaround for https://issues.kolab.org/issue4429
     // and http://bugreports.qt.nokia.com/browse/QTBUG-8740
     mTextLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
     connect(mTextLabel, &QLabel::linkActivated, this, &KeySelectionDialog::slotStartCertificateManager);
     mTopLayout->addWidget(mTextLabel);
     mTextLabel->hide();
 
     QPushButton *const searchExternalPB =
         new QPushButton(i18n("Search for &External Certificates"), page);
     mTopLayout->addWidget(searchExternalPB, 0, Qt::AlignLeft);
     connect(searchExternalPB, &QAbstractButton::clicked, this, &KeySelectionDialog::slotStartSearchForExternalCertificates);
     if (initialQuery.isEmpty()) {
         searchExternalPB->hide();
     }
 
     auto hlay = new QHBoxLayout();
     mTopLayout->addLayout(hlay);
 
     auto le = new QLineEdit(page);
     le->setClearButtonEnabled(true);
     le->setText(initialQuery);
 
     QLabel *lbSearchFor =  new QLabel(i18n("&Search for:"), page);
     lbSearchFor->setBuddy(le);
 
     hlay->addWidget(lbSearchFor);
     hlay->addWidget(le, 1);
     le->setFocus();
 
     connect(le, &QLineEdit::textChanged,
-            this, static_cast<void(KeySelectionDialog::*)(const QString &)>(&KeySelectionDialog::slotSearch));
+            this, [this] (const QString &s) { slotSearch(s); });
     connect(mStartSearchTimer, &QTimer::timeout, this, &KeySelectionDialog::slotFilter);
 
     mKeyListView = new KeyListView(new ColumnStrategy(mKeyUsage), nullptr, page);
     mKeyListView->setObjectName(QStringLiteral("mKeyListView"));
     mKeyListView->header()->stretchLastSection();
     mKeyListView->setRootIsDecorated(true);
     mKeyListView->setSortingEnabled(true);
     mKeyListView->header()->setSortIndicatorShown(true);
     mKeyListView->header()->setSortIndicator(1, Qt::AscendingOrder);   // sort by User ID
     if (options & ExtendedSelection) {
         mKeyListView->setSelectionMode(QAbstractItemView::ExtendedSelection);
     }
     mTopLayout->addWidget(mKeyListView, 10);
 
     if (options & RememberChoice) {
         mRememberCB = new QCheckBox(i18n("&Remember choice"), page);
         mTopLayout->addWidget(mRememberCB);
         mRememberCB->setWhatsThis(
             i18n("<qt><p>If you check this box your choice will "
                  "be stored and you will not be asked again."
                  "</p></qt>"));
     }
 
     connect(mCheckSelectionTimer, &QTimer::timeout,
-            this, static_cast<void(KeySelectionDialog::*)()>(&KeySelectionDialog::slotCheckSelection));
+            this, [this] () { slotCheckSelection(); });
     connectSignals();
 
     connect(mKeyListView, &Kleo::KeyListView::doubleClicked, this, &KeySelectionDialog::slotTryOk);
     connect(mKeyListView, &KeyListView::contextMenu, this, &KeySelectionDialog::slotRMB);
 
     if (options & RereadKeys) {
         QPushButton *button = new QPushButton(i18n("&Reread Keys"));
         buttonBox->addButton(button, QDialogButtonBox::ActionRole);
         connect(button, &QPushButton::clicked, this, &KeySelectionDialog::slotRereadKeys);
     }
     if (options & ExternalCertificateManager) {
         QPushButton *button = new QPushButton(i18n("&Start Certificate Manager"));
         buttonBox->addButton(button, QDialogButtonBox::ActionRole);
         connect(button, &QPushButton::clicked, this, [this]() { slotStartCertificateManager(); });
     }
     connect(mOkButton, &QPushButton::clicked, this, &KeySelectionDialog::slotOk);
     connect(buttonBox->button(QDialogButtonBox::Cancel), &QPushButton::clicked, this, &KeySelectionDialog::slotCancel);
 
     mTopLayout->activate();
 
     if (qApp) {
         QSize dialogSize(sizeHint());
         KConfigGroup dialogConfig(KSharedConfig::openConfig(), "Key Selection Dialog");
         dialogSize = dialogConfig.readEntry("Dialog size", dialogSize);
         const QByteArray headerState = dialogConfig.readEntry("header", QByteArray());
         if (!headerState.isEmpty()) {
             mKeyListView->header()->restoreState(headerState);
         }
         resize(dialogSize);
     }
 }
 
 void Kleo::KeySelectionDialog::init(bool rememberChoice, bool extendedSelection, const QString &text, const QString &initialQuery)
 {
     Options options = { RereadKeys, ExternalCertificateManager };
     options.setFlag(ExtendedSelection, extendedSelection);
     options.setFlag(RememberChoice, rememberChoice);
 
     setUpUI(options, initialQuery);
     setText(text);
 
     if (mKeyUsage & OpenPGPKeys) {
         mOpenPGPBackend = QGpgME::openpgp();
     }
     if (mKeyUsage & SMIMEKeys) {
         mSMIMEBackend = QGpgME::smime();
     }
 
     slotRereadKeys();
 }
 
 Kleo::KeySelectionDialog::~KeySelectionDialog()
 {
     disconnectSignals();
     KConfigGroup dialogConfig(KSharedConfig::openConfig(), "Key Selection Dialog");
     dialogConfig.writeEntry("Dialog size", size());
     dialogConfig.writeEntry("header", mKeyListView->header()->saveState());
     dialogConfig.sync();
 }
 
 void Kleo::KeySelectionDialog::setText(const QString &text)
 {
     mTextLabel->setText(text);
     mTextLabel->setVisible(!text.isEmpty());
 }
 
 void Kleo::KeySelectionDialog::setKeys(const std::vector<GpgME::Key> &keys)
 {
     for (const GpgME::Key &key : keys) {
         mKeyListView->slotAddKey(key);
     }
 }
 
 void Kleo::KeySelectionDialog::connectSignals()
 {
     if (mKeyListView->isMultiSelection())
         connect(mKeyListView, &QTreeWidget::itemSelectionChanged, this, &KeySelectionDialog::slotSelectionChanged);
     else
-        connect(mKeyListView, static_cast<void(KeyListView::*)(KeyListViewItem*)>(&KeyListView::selectionChanged),
-                this, static_cast<void(KeySelectionDialog::*)(KeyListViewItem*)>(&KeySelectionDialog::slotCheckSelection));
+        connect(mKeyListView, QOverload<KeyListViewItem*>::of(&KeyListView::selectionChanged),
+                this, QOverload<KeyListViewItem*>::of(&KeySelectionDialog::slotCheckSelection));
 }
 
 void Kleo::KeySelectionDialog::disconnectSignals()
 {
     if (mKeyListView->isMultiSelection())
         disconnect(mKeyListView, &QTreeWidget::itemSelectionChanged,
                    this, &KeySelectionDialog::slotSelectionChanged);
     else
-        disconnect(mKeyListView, static_cast<void(KeyListView::*)(KeyListViewItem*)>(&KeyListView::selectionChanged),
-                   this, static_cast<void(KeySelectionDialog::*)(KeyListViewItem*)>(&KeySelectionDialog::slotCheckSelection));
+        disconnect(mKeyListView, QOverload<KeyListViewItem*>::of(&KeyListView::selectionChanged),
+                   this, QOverload<KeyListViewItem*>::of(&KeySelectionDialog::slotCheckSelection));
 }
 
 const GpgME::Key &Kleo::KeySelectionDialog::selectedKey() const
 {
     static const GpgME::Key null = GpgME::Key::null;
     if (mKeyListView->isMultiSelection() || !mKeyListView->selectedItem()) {
         return null;
     }
     return mKeyListView->selectedItem()->key();
 }
 
 QString Kleo::KeySelectionDialog::fingerprint() const
 {
     return QLatin1String(selectedKey().primaryFingerprint());
 }
 
 QStringList Kleo::KeySelectionDialog::fingerprints() const
 {
     QStringList result;
     for (auto it = mSelectedKeys.begin(); it != mSelectedKeys.end(); ++it)
         if (const char *fpr = it->primaryFingerprint()) {
             result.push_back(QLatin1String(fpr));
         }
     return result;
 }
 
 QStringList Kleo::KeySelectionDialog::pgpKeyFingerprints() const
 {
     QStringList result;
     for (auto it = mSelectedKeys.begin(); it != mSelectedKeys.end(); ++it)
         if (it->protocol() == GpgME::OpenPGP)
             if (const char *fpr = it->primaryFingerprint()) {
                 result.push_back(QLatin1String(fpr));
             }
     return result;
 }
 
 QStringList Kleo::KeySelectionDialog::smimeFingerprints() const
 {
     QStringList result;
     for (auto it = mSelectedKeys.begin(); it != mSelectedKeys.end(); ++it)
         if (it->protocol() == GpgME::CMS)
             if (const char *fpr = it->primaryFingerprint()) {
                 result.push_back(QLatin1String(fpr));
             }
     return result;
 }
 
 void Kleo::KeySelectionDialog::slotRereadKeys()
 {
     mKeyListView->clear();
     mListJobCount = 0;
     mTruncated = 0;
     mSavedOffsetY = mKeyListView->verticalScrollBar()->value();
 
     disconnectSignals();
     mKeyListView->setEnabled(false);
 
     // FIXME: save current selection
     if (mOpenPGPBackend) {
         startKeyListJobForBackend(mOpenPGPBackend, std::vector<GpgME::Key>(), false /*non-validating*/);
     }
     if (mSMIMEBackend) {
         startKeyListJobForBackend(mSMIMEBackend, std::vector<GpgME::Key>(), false /*non-validating*/);
     }
 
     if (mListJobCount == 0) {
         mKeyListView->setEnabled(true);
         KMessageBox::information(this,
                                  i18n("No backends found for listing keys. "
                                       "Check your installation."),
                                  i18n("Key Listing Failed"));
         connectSignals();
     }
 }
 
 void Kleo::KeySelectionDialog::slotStartCertificateManager(const QString &query)
 {
     QStringList args;
 
     if (!query.isEmpty()) {
         args << QStringLiteral("--search") << query;
     }
     if (!QProcess::startDetached(QStringLiteral("kleopatra"), args))
         KMessageBox::error(this,
                            i18n("Could not start certificate manager; "
                                 "please check your installation."),
                            i18n("Certificate Manager Error"));
     else {
         qCDebug(KLEO_UI_LOG) << "\nslotStartCertManager(): certificate manager started.";
     }
 }
 
 #ifndef __KLEO_UI_SHOW_KEY_LIST_ERROR_H__
 #define __KLEO_UI_SHOW_KEY_LIST_ERROR_H__
 static void showKeyListError(QWidget *parent, const GpgME::Error &err)
 {
     Q_ASSERT(err);
     const QString msg = i18n("<qt><p>An error occurred while fetching "
                              "the keys from the backend:</p>"
                              "<p><b>%1</b></p></qt>",
                              QString::fromLocal8Bit(err.asString()));
 
     KMessageBox::error(parent, msg, i18n("Key Listing Failed"));
 }
 #endif // __KLEO_UI_SHOW_KEY_LIST_ERROR_H__
 
 namespace
 {
 struct ExtractFingerprint {
     QString operator()(const GpgME::Key &key)
     {
         return QLatin1String(key.primaryFingerprint());
     }
 };
 }
 
 void Kleo::KeySelectionDialog::startKeyListJobForBackend(const QGpgME::Protocol *backend, const std::vector<GpgME::Key> &keys, bool validate)
 {
     Q_ASSERT(backend);
     QGpgME::KeyListJob *job = backend->keyListJob(false, false, validate);    // local, w/o sigs, validation as givem
     if (!job) {
         return;
     }
 
     connect(job, &QGpgME::KeyListJob::result, this, &KeySelectionDialog::slotKeyListResult);
     if (validate)
         connect(job, &QGpgME::KeyListJob::nextKey, mKeyListView, &KeyListView::slotRefreshKey);
     else
         connect(job, &QGpgME::KeyListJob::nextKey, mKeyListView, &KeyListView::slotAddKey);
 
     QStringList fprs;
     std::transform(keys.begin(), keys.end(), std::back_inserter(fprs), ExtractFingerprint());
     const GpgME::Error err = job->start(fprs, mKeyUsage & SecretKeys && !(mKeyUsage & PublicKeys));
 
     if (err) {
         return showKeyListError(this, err);
     }
 
 #ifndef LIBKLEO_NO_PROGRESSDIALOG
     // FIXME: create a MultiProgressDialog:
     (void)new ProgressDialog(job, validate ? i18n("Checking selected keys...") : i18n("Fetching keys..."), this);
 #endif
     ++mListJobCount;
 }
 
 static void selectKeys(Kleo::KeyListView *klv, const std::vector<GpgME::Key> &selectedKeys)
 {
     klv->clearSelection();
     if (selectedKeys.empty()) {
         return;
     }
     for (auto it = selectedKeys.begin(); it != selectedKeys.end(); ++it)
         if (Kleo::KeyListViewItem *item = klv->itemByFingerprint(it->primaryFingerprint())) {
             item->setSelected(true);
         }
 }
 
 void Kleo::KeySelectionDialog::slotKeyListResult(const GpgME::KeyListResult &res)
 {
     if (res.error()) {
         showKeyListError(this, res.error());
     } else if (res.isTruncated()) {
         ++mTruncated;
     }
 
     if (--mListJobCount > 0) {
         return;    // not yet finished...
     }
 
     if (mTruncated > 0)
         KMessageBox::information(this,
                                  i18np("<qt>One backend returned truncated output.<p>"
                                        "Not all available keys are shown</p></qt>",
                                        "<qt>%1 backends returned truncated output.<p>"
                                        "Not all available keys are shown</p></qt>",
                                        mTruncated),
                                  i18n("Key List Result"));
 
     mKeyListView->flushKeys();
 
     mKeyListView->setEnabled(true);
     mListJobCount = mTruncated = 0;
     mKeysToCheck.clear();
 
     selectKeys(mKeyListView, mSelectedKeys);
 
     slotFilter();
 
     connectSignals();
 
     slotSelectionChanged();
 
     // restore the saved position of the contents
     mKeyListView->verticalScrollBar()->setValue(mSavedOffsetY); mSavedOffsetY = 0;
 }
 
 void Kleo::KeySelectionDialog::slotSelectionChanged()
 {
     qCDebug(KLEO_UI_LOG) << "KeySelectionDialog::slotSelectionChanged()";
 
     // (re)start the check selection timer. Checking the selection is delayed
     // because else drag-selection doesn't work very good (checking key trust
     // is slow).
     mCheckSelectionTimer->start(sCheckSelectionDelay);
 }
 
 namespace
 {
 struct AlreadyChecked {
     bool operator()(const GpgME::Key &key) const
     {
         return key.keyListMode() & GpgME::Validate;
     }
 };
 }
 
 void Kleo::KeySelectionDialog::slotCheckSelection(KeyListViewItem *item)
 {
     qCDebug(KLEO_UI_LOG) << "KeySelectionDialog::slotCheckSelection()";
 
     mCheckSelectionTimer->stop();
 
     mSelectedKeys.clear();
 
     if (!mKeyListView->isMultiSelection()) {
         if (item) {
             mSelectedKeys.push_back(item->key());
         }
     }
 
     for (KeyListViewItem *it = mKeyListView->firstChild(); it; it = it->nextSibling())
         if (it->isSelected()) {
             mSelectedKeys.push_back(it->key());
         }
 
     mKeysToCheck.clear();
     std::remove_copy_if(mSelectedKeys.begin(), mSelectedKeys.end(),
                         std::back_inserter(mKeysToCheck),
                         AlreadyChecked());
     if (mKeysToCheck.empty()) {
         mOkButton->setEnabled(!mSelectedKeys.empty() &&
                               checkKeyUsage(mSelectedKeys, mKeyUsage));
         return;
     }
 
     // performed all fast checks - now for validating key listing:
     startValidatingKeyListing();
 }
 
 void Kleo::KeySelectionDialog::startValidatingKeyListing()
 {
     if (mKeysToCheck.empty()) {
         return;
     }
 
     mListJobCount = 0;
     mTruncated = 0;
     mSavedOffsetY = mKeyListView->verticalScrollBar()->value();
 
     disconnectSignals();
     mKeyListView->setEnabled(false);
 
     std::vector<GpgME::Key> smime, openpgp;
     for (std::vector<GpgME::Key>::const_iterator it = mKeysToCheck.begin(); it != mKeysToCheck.end(); ++it)
         if (it->protocol() == GpgME::OpenPGP) {
             openpgp.push_back(*it);
         } else {
             smime.push_back(*it);
         }
 
     if (!openpgp.empty()) {
         Q_ASSERT(mOpenPGPBackend);
         startKeyListJobForBackend(mOpenPGPBackend, openpgp, true /*validate*/);
     }
     if (!smime.empty()) {
         Q_ASSERT(mSMIMEBackend);
         startKeyListJobForBackend(mSMIMEBackend, smime, true /*validate*/);
     }
 
     Q_ASSERT(mListJobCount > 0);
 }
 
 bool Kleo::KeySelectionDialog::rememberSelection() const
 {
     return mRememberCB && mRememberCB->isChecked();
 }
 
 void Kleo::KeySelectionDialog::slotRMB(Kleo::KeyListViewItem *item, const QPoint &p)
 {
     if (!item) {
         return;
     }
 
     mCurrentContextMenuItem = item;
 
     QMenu menu;
     menu.addAction(i18n("Recheck Key"), this, &KeySelectionDialog::slotRecheckKey);
     menu.exec(p);
 }
 
 void Kleo::KeySelectionDialog::slotRecheckKey()
 {
     if (!mCurrentContextMenuItem || mCurrentContextMenuItem->key().isNull()) {
         return;
     }
 
     mKeysToCheck.clear();
     mKeysToCheck.push_back(mCurrentContextMenuItem->key());
 }
 
 void Kleo::KeySelectionDialog::slotTryOk()
 {
     if (!mSelectedKeys.empty() && checkKeyUsage(mSelectedKeys, mKeyUsage)) {
         slotOk();
     }
 }
 
 void Kleo::KeySelectionDialog::slotOk()
 {
     if (mCheckSelectionTimer->isActive()) {
         slotCheckSelection();
     }
 #if 0 //Laurent I don't understand why we returns here.
     // button could be disabled again after checking the selected key1
     if (!mSelectedKeys.empty() && checkKeyUsage(mSelectedKeys, mKeyUsage)) {
         return;
     }
 #endif
     mStartSearchTimer->stop();
     accept();
 }
 
 void Kleo::KeySelectionDialog::slotCancel()
 {
     mCheckSelectionTimer->stop();
     mStartSearchTimer->stop();
     reject();
 }
 
 void Kleo::KeySelectionDialog::slotSearch(const QString &text)
 {
     mSearchText = text.trimmed().toUpper();
     slotSearch();
 }
 
 void Kleo::KeySelectionDialog::slotSearch()
 {
     mStartSearchTimer->setSingleShot(true);
     mStartSearchTimer->start(sCheckSelectionDelay);
 }
 
 void Kleo::KeySelectionDialog::slotFilter()
 {
     if (mSearchText.isEmpty()) {
         showAllItems();
         return;
     }
 
     // OK, so we need to filter:
     QRegExp keyIdRegExp(QLatin1String("(?:0x)?[A-F0-9]{1,8}"), Qt::CaseInsensitive);
     if (keyIdRegExp.exactMatch(mSearchText)) {
         if (mSearchText.startsWith(QLatin1String("0X")))
             // search for keyID only:
         {
             filterByKeyID(mSearchText.mid(2));
         } else
             // search for UID and keyID:
         {
             filterByKeyIDOrUID(mSearchText);
         }
     } else {
         // search in UID:
         filterByUID(mSearchText);
     }
 }
 
 void Kleo::KeySelectionDialog::filterByKeyID(const QString &keyID)
 {
     Q_ASSERT(keyID.length() <= 8);
     Q_ASSERT(!keyID.isEmpty());   // regexp in slotFilter should prevent these
     if (keyID.isEmpty()) {
         showAllItems();
     } else
         for (KeyListViewItem *item = mKeyListView->firstChild(); item; item = item->nextSibling()) {
             item->setHidden(!item->text(0).toUpper().startsWith(keyID));
         }
 }
 
 static bool anyUIDMatches(const Kleo::KeyListViewItem *item, QRegExp &rx)
 {
     if (!item) {
         return false;
     }
 
     const std::vector<GpgME::UserID> uids = item->key().userIDs();
     for (auto it = uids.begin(); it != uids.end(); ++it)
         if (it->id() && rx.indexIn(QString::fromUtf8(it->id())) >= 0) {
             return true;
         }
     return false;
 }
 
 void Kleo::KeySelectionDialog::filterByKeyIDOrUID(const QString &str)
 {
     Q_ASSERT(!str.isEmpty());
 
     // match beginnings of words:
     QRegExp rx(QLatin1String("\\b") + QRegExp::escape(str), Qt::CaseInsensitive);
 
     for (KeyListViewItem *item = mKeyListView->firstChild(); item; item = item->nextSibling()) {
         item->setHidden(!item->text(0).toUpper().startsWith(str) && !anyUIDMatches(item, rx));
     }
 
 }
 
 void Kleo::KeySelectionDialog::filterByUID(const QString &str)
 {
     Q_ASSERT(!str.isEmpty());
 
     // match beginnings of words:
     QRegExp rx(QLatin1String("\\b") + QRegExp::escape(str), Qt::CaseInsensitive);
 
     for (KeyListViewItem *item = mKeyListView->firstChild(); item; item = item->nextSibling()) {
         item->setHidden(!anyUIDMatches(item, rx));
     }
 }
 
 void Kleo::KeySelectionDialog::showAllItems()
 {
     for (KeyListViewItem *item = mKeyListView->firstChild(); item; item = item->nextSibling()) {
         item->setHidden(false);
     }
 }