File indexing completed on 2024-06-23 05:13:49

 /*  crypto/gui/certificatelineedit.cpp
 
     This file is part of Kleopatra, the KDE keymanager
     SPDX-FileCopyrightText: 2016 Bundesamt für Sicherheit in der Informationstechnik
     SPDX-FileContributor: Intevation GmbH
     SPDX-FileCopyrightText: 2021, 2022 g10 Code GmbH
     SPDX-FileContributor: Ingo Klöcker <dev@ingo-kloecker.de>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "certificatelineedit.h"
 
 #include "commands/detailscommand.h"
 #include "dialogs/groupdetailsdialog.h"
 #include "utils/accessibility.h"
 #include "view/errorlabel.h"
 
 #include <QAccessible>
 #include <QAction>
 #include <QCompleter>
 #include <QPushButton>
 #include <QSignalBlocker>
 
 #include "kleopatra_debug.h"
 
 #include <Libkleo/Debug>
 #include <Libkleo/Formatting>
 #include <Libkleo/KeyCache>
 #include <Libkleo/KeyFilter>
 #include <Libkleo/KeyGroup>
 #include <Libkleo/KeyList>
 #include <Libkleo/KeyListModel>
 #include <Libkleo/KeyListSortFilterProxyModel>
 
 #include <KLocalizedString>
 
 #include <gpgme++/key.h>
 #include <gpgme++/keylistresult.h>
 
 #include <QGpgME/KeyListJob>
 #include <QGpgME/Protocol>
 
 #include <QHBoxLayout>
 #include <QLineEdit>
 #include <QMenu>
 #include <QToolButton>
 
 using namespace Kleo;
 using namespace GpgME;
 
 Q_DECLARE_METATYPE(GpgME::Key)
 Q_DECLARE_METATYPE(KeyGroup)
 
 static QStringList s_lookedUpKeys;
 
 namespace
 {
 class CompletionProxyModel : public KeyListSortFilterProxyModel
 {
     Q_OBJECT
 
 public:
     CompletionProxyModel(QObject *parent = nullptr)
         : KeyListSortFilterProxyModel(parent)
     {
     }
 
     int columnCount(const QModelIndex &parent = QModelIndex()) const override
     {
         Q_UNUSED(parent)
         // pretend that there is only one column to workaround a bug in
         // QAccessibleTable which provides the accessibility interface for the
         // completion pop-up
         return 1;
     }
 
     QVariant data(const QModelIndex &idx, int role) const override
     {
         if (!idx.isValid()) {
             return QVariant();
         }
 
         switch (role) {
         case Qt::DecorationRole: {
             const auto key = KeyListSortFilterProxyModel::data(idx, KeyList::KeyRole).value<GpgME::Key>();
             if (!key.isNull()) {
                 return Kleo::Formatting::iconForUid(key.userID(0));
             }
 
             const auto group = KeyListSortFilterProxyModel::data(idx, KeyList::GroupRole).value<KeyGroup>();
             if (!group.isNull()) {
                 return QIcon::fromTheme(QStringLiteral("group"));
             }
 
             Q_ASSERT(!key.isNull() || !group.isNull());
             return QVariant();
         }
         default:
             return KeyListSortFilterProxyModel::data(index(idx.row(), KeyList::Summary), role);
         }
     }
 
 private:
     bool lessThan(const QModelIndex &left, const QModelIndex &right) const override
     {
         const auto leftKey = sourceModel()->data(left, KeyList::KeyRole).value<GpgME::Key>();
         const auto leftGroup = leftKey.isNull() ? sourceModel()->data(left, KeyList::GroupRole).value<KeyGroup>() : KeyGroup{};
         const auto rightKey = sourceModel()->data(right, KeyList::KeyRole).value<GpgME::Key>();
         const auto rightGroup = rightKey.isNull() ? sourceModel()->data(right, KeyList::GroupRole).value<KeyGroup>() : KeyGroup{};
 
         // shouldn't happen, but still put null entries at the end
         if (leftKey.isNull() && leftGroup.isNull()) {
             return false;
         }
         if (rightKey.isNull() && rightGroup.isNull()) {
             return true;
         }
 
         // first sort by the displayed name and/or email address
         const auto leftNameAndOrEmail = leftGroup.isNull() ? Formatting::nameAndEmailForSummaryLine(leftKey) : leftGroup.name();
         const auto rightNameAndOrEmail = rightGroup.isNull() ? Formatting::nameAndEmailForSummaryLine(rightKey) : rightGroup.name();
         const int cmp = QString::localeAwareCompare(leftNameAndOrEmail, rightNameAndOrEmail);
         if (cmp) {
             return cmp < 0;
         }
         // then sort groups before certificates
         if (!leftGroup.isNull() && !rightKey.isNull()) {
             return true; // left is group, right is certificate
         }
         if (!leftKey.isNull() && !rightGroup.isNull()) {
             return false; // left is certificate, right is group
         }
 
         // if both are groups (with identical names) sort them by their ID
         if (!leftGroup.isNull() && !rightGroup.isNull()) {
             return leftGroup.id() < rightGroup.id();
         }
 
         // sort certificates with same name/email by validity and creation time
         const auto lUid = leftKey.userID(0);
         const auto rUid = rightKey.userID(0);
         if (lUid.validity() != rUid.validity()) {
             return lUid.validity() > rUid.validity();
         }
 
         /* Both have the same validity, check which one is newer. */
         time_t leftTime = 0;
         for (const GpgME::Subkey &s : leftKey.subkeys()) {
             if (s.isBad()) {
                 continue;
             }
             if (s.creationTime() > leftTime) {
                 leftTime = s.creationTime();
             }
         }
         time_t rightTime = 0;
         for (const GpgME::Subkey &s : rightKey.subkeys()) {
             if (s.isBad()) {
                 continue;
             }
             if (s.creationTime() > rightTime) {
                 rightTime = s.creationTime();
             }
         }
         if (rightTime != leftTime) {
             return leftTime > rightTime;
         }
 
         // as final resort we compare the fingerprints
         return strcmp(leftKey.primaryFingerprint(), rightKey.primaryFingerprint()) < 0;
     }
 };
 
 auto createSeparatorAction(QObject *parent)
 {
     auto action = new QAction{parent};
     action->setSeparator(true);
     return action;
 }
 } // namespace
 
 class CertificateLineEdit::Private
 {
     CertificateLineEdit *q;
 
 public:
     enum class Status {
         Empty, //< text is empty
         Success, //< a certificate or group is set
         None, //< entered text does not match any certificates or groups
         Ambiguous, //< entered text matches multiple certificates or groups
     };
     enum class CursorPositioning {
         MoveToEnd,
         KeepPosition,
         MoveToStart,
         Default = MoveToEnd,
     };
 
     explicit Private(CertificateLineEdit *qq, AbstractKeyListModel *model, KeyUsage::Flags usage, KeyFilter *filter);
 
     QString text() const;
 
     void setKey(const GpgME::Key &key);
 
     void setGroup(const KeyGroup &group);
 
     void setKeyFilter(const std::shared_ptr<KeyFilter> &filter);
 
     void setAccessibleName(const QString &s);
 
 private:
     void updateKey(CursorPositioning positioning);
     void editChanged();
     void editFinished();
     void checkLocate();
     void onLocateJobResult(QGpgME::Job *job, const QString &email, const KeyListResult &result, const std::vector<GpgME::Key> &keys);
     void openDetailsDialog();
     void setTextWithBlockedSignals(const QString &s, CursorPositioning positioning);
     void showContextMenu(const QPoint &pos);
     QString errorMessage() const;
     QIcon statusIcon() const;
     QString statusToolTip() const;
     void updateStatusAction();
     void updateErrorLabel();
     void updateAccessibleNameAndDescription();
 
 public:
     Status mStatus = Status::Empty;
     bool mEditingInProgress = false;
     GpgME::Key mKey;
     KeyGroup mGroup;
 
     struct Ui {
         explicit Ui(QWidget *parent)
             : lineEdit{parent}
             , button{parent}
             , errorLabel{parent}
         {
         }
 
         QLineEdit lineEdit;
         QToolButton button;
         ErrorLabel errorLabel;
     } ui;
 
 private:
     QString mAccessibleName;
     KeyListSortFilterProxyModel *const mFilterModel;
     CompletionProxyModel *const mCompleterFilterModel;
     QCompleter *mCompleter = nullptr;
     std::shared_ptr<KeyFilter> mFilter;
     QAction *const mStatusAction;
     QAction *const mShowDetailsAction;
     QPointer<QGpgME::Job> mLocateJob;
     Formatting::IconProvider mIconProvider;
 };
 
 CertificateLineEdit::Private::Private(CertificateLineEdit *qq, AbstractKeyListModel *model, KeyUsage::Flags usage, KeyFilter *filter)
     : q{qq}
     , ui{qq}
     , mFilterModel{new KeyListSortFilterProxyModel{qq}}
     , mCompleterFilterModel{new CompletionProxyModel{qq}}
     , mCompleter{new QCompleter{qq}}
     , mFilter{std::shared_ptr<KeyFilter>{filter}}
     , mStatusAction{new QAction{qq}}
     , mShowDetailsAction{new QAction{qq}}
     , mIconProvider{usage}
 {
     ui.lineEdit.setPlaceholderText(i18n("Please enter a name or email address..."));
     ui.lineEdit.setClearButtonEnabled(true);
     ui.lineEdit.setContextMenuPolicy(Qt::CustomContextMenu);
     ui.lineEdit.addAction(mStatusAction, QLineEdit::LeadingPosition);
 
     mCompleterFilterModel->setKeyFilter(mFilter);
     mCompleterFilterModel->setSourceModel(model);
     // initialize dynamic sorting
     mCompleterFilterModel->sort(0);
     mCompleter->setModel(mCompleterFilterModel);
     mCompleter->setFilterMode(Qt::MatchContains);
     mCompleter->setCaseSensitivity(Qt::CaseInsensitive);
     ui.lineEdit.setCompleter(mCompleter);
 
     ui.button.setIcon(QIcon::fromTheme(QStringLiteral("resource-group-new")));
     ui.button.setToolTip(i18n("Show certificate list"));
     ui.button.setAccessibleName(i18n("Show certificate list"));
 
     ui.errorLabel.setVisible(false);
 
     auto vbox = new QVBoxLayout{q};
     vbox->setContentsMargins(0, 0, 0, 0);
 
     auto l = new QHBoxLayout;
     l->setContentsMargins(0, 0, 0, 0);
     l->addWidget(&ui.lineEdit);
     l->addWidget(&ui.button);
 
     vbox->addLayout(l);
     vbox->addWidget(&ui.errorLabel);
 
     q->setFocusPolicy(ui.lineEdit.focusPolicy());
     q->setFocusProxy(&ui.lineEdit);
 
     mShowDetailsAction->setIcon(QIcon::fromTheme(QStringLiteral("help-about")));
     mShowDetailsAction->setText(i18nc("@action:inmenu", "Show Details"));
     mShowDetailsAction->setEnabled(false);
 
     mFilterModel->setSourceModel(model);
     mFilterModel->setFilterKeyColumn(KeyList::Summary);
     if (filter) {
         mFilterModel->setKeyFilter(mFilter);
     }
 
     connect(KeyCache::instance().get(), &Kleo::KeyCache::keysMayHaveChanged, q, [this]() {
         updateKey(CursorPositioning::KeepPosition);
     });
     connect(KeyCache::instance().get(), &Kleo::KeyCache::groupUpdated, q, [this](const KeyGroup &group) {
         if (!mGroup.isNull() && mGroup.source() == group.source() && mGroup.id() == group.id()) {
             setTextWithBlockedSignals(Formatting::summaryLine(group), CursorPositioning::KeepPosition);
             // queue the update to ensure that the model has been updated
             QMetaObject::invokeMethod(
                 q,
                 [this]() {
                     updateKey(CursorPositioning::KeepPosition);
                 },
                 Qt::QueuedConnection);
         }
     });
     connect(KeyCache::instance().get(), &Kleo::KeyCache::groupRemoved, q, [this](const KeyGroup &group) {
         if (!mGroup.isNull() && mGroup.source() == group.source() && mGroup.id() == group.id()) {
             mGroup = KeyGroup();
             QSignalBlocker blocky{&ui.lineEdit};
             ui.lineEdit.clear();
             // queue the update to ensure that the model has been updated
             QMetaObject::invokeMethod(
                 q,
                 [this]() {
                     updateKey(CursorPositioning::KeepPosition);
                 },
                 Qt::QueuedConnection);
         }
     });
     connect(&ui.lineEdit, &QLineEdit::editingFinished, q, [this]() {
         // queue the call of editFinished() to ensure that QCompleter::activated is handled first
         QMetaObject::invokeMethod(
             q,
             [this]() {
                 editFinished();
             },
             Qt::QueuedConnection);
     });
     connect(&ui.lineEdit, &QLineEdit::textChanged, q, [this]() {
         editChanged();
     });
     connect(&ui.lineEdit, &QLineEdit::customContextMenuRequested, q, [this](const QPoint &pos) {
         showContextMenu(pos);
     });
     connect(mStatusAction, &QAction::triggered, q, [this]() {
         openDetailsDialog();
     });
     connect(mShowDetailsAction, &QAction::triggered, q, [this]() {
         openDetailsDialog();
     });
     connect(&ui.button, &QToolButton::clicked, q, &CertificateLineEdit::certificateSelectionRequested);
     connect(mCompleter, qOverload<const QModelIndex &>(&QCompleter::activated), q, [this](const QModelIndex &index) {
         Key key = mCompleter->completionModel()->data(index, KeyList::KeyRole).value<Key>();
         auto group = mCompleter->completionModel()->data(index, KeyList::GroupRole).value<KeyGroup>();
         if (!key.isNull()) {
             q->setKey(key);
         } else if (!group.isNull()) {
             q->setGroup(group);
         } else {
             qCDebug(KLEOPATRA_LOG) << "Activated item is neither key nor group";
         }
         // queue the call of editFinished() to ensure that QLineEdit finished its own work
         QMetaObject::invokeMethod(
             q,
             [this]() {
                 editFinished();
             },
             Qt::QueuedConnection);
     });
     updateKey(CursorPositioning::Default);
 }
 
 void CertificateLineEdit::Private::openDetailsDialog()
 {
     if (!q->key().isNull()) {
         auto cmd = new Commands::DetailsCommand{q->key()};
         cmd->setParentWidget(q);
         cmd->start();
     } else if (!q->group().isNull()) {
         auto dlg = new Dialogs::GroupDetailsDialog{q};
         dlg->setAttribute(Qt::WA_DeleteOnClose);
         dlg->setGroup(q->group());
         dlg->show();
     }
 }
 
 void CertificateLineEdit::Private::setTextWithBlockedSignals(const QString &s, CursorPositioning positioning)
 {
     QSignalBlocker blocky{&ui.lineEdit};
     const auto cursorPos = ui.lineEdit.cursorPosition();
     ui.lineEdit.setText(s);
     switch (positioning) {
     case CursorPositioning::KeepPosition:
         ui.lineEdit.setCursorPosition(cursorPos);
         break;
     case CursorPositioning::MoveToStart:
         ui.lineEdit.setCursorPosition(0);
         break;
     case CursorPositioning::MoveToEnd:
     default:; // setText() already moved the cursor to the end of the line
     };
 }
 
 void CertificateLineEdit::Private::showContextMenu(const QPoint &pos)
 {
     if (QMenu *menu = ui.lineEdit.createStandardContextMenu()) {
         auto *const firstStandardAction = menu->actions().value(0);
         menu->insertActions(firstStandardAction, {mShowDetailsAction, createSeparatorAction(menu)});
         menu->setAttribute(Qt::WA_DeleteOnClose);
         menu->popup(ui.lineEdit.mapToGlobal(pos));
     }
 }
 
 CertificateLineEdit::CertificateLineEdit(AbstractKeyListModel *model, KeyUsage::Flags usage, KeyFilter *filter, QWidget *parent)
     : QWidget{parent}
     , d{new Private{this, model, usage, filter}}
 {
     /* Take ownership of the model to prevent double deletion when the
      * filter models are deleted */
     model->setParent(parent ? parent : this);
 }
 
 CertificateLineEdit::~CertificateLineEdit() = default;
 
 void CertificateLineEdit::Private::editChanged()
 {
     const bool editingStarted = !mEditingInProgress;
     mEditingInProgress = true;
     updateKey(CursorPositioning::Default);
     if (editingStarted) {
         Q_EMIT q->editingStarted();
     }
     if (q->isEmpty()) {
         Q_EMIT q->cleared();
     }
 }
 
 void CertificateLineEdit::Private::editFinished()
 {
     // perform a first update with the "editing in progress" flag still set
     updateKey(CursorPositioning::MoveToStart);
     mEditingInProgress = false;
     checkLocate();
     // perform another update with the "editing in progress" flag cleared
     // after a key locate may have been started; this makes sure that displaying
     // an error is delayed until the key locate job has finished
     updateKey(CursorPositioning::MoveToStart);
 }
 
 void CertificateLineEdit::Private::checkLocate()
 {
     if (mStatus != Status::None) {
         // try to locate key only if text matches no local certificates or groups
         return;
     }
 
     // Only check once per mailbox
     const auto mailText = ui.lineEdit.text().trimmed();
     if (mailText.isEmpty() || s_lookedUpKeys.contains(mailText)) {
         return;
     }
     s_lookedUpKeys << mailText;
     if (mLocateJob) {
         mLocateJob->slotCancel();
         mLocateJob.clear();
     }
     auto job = QGpgME::openpgp()->locateKeysJob();
     connect(job, &QGpgME::KeyListJob::result, q, [this, job, mailText](const KeyListResult &result, const std::vector<GpgME::Key> &keys) {
         onLocateJobResult(job, mailText, result, keys);
     });
     if (auto err = job->start({mailText}, /*secretOnly=*/false)) {
         qCDebug(KLEOPATRA_LOG) << __func__ << "Error: Starting" << job << "for" << mailText << "failed with" << Formatting::errorAsString(err);
     } else {
         mLocateJob = job;
         qCDebug(KLEOPATRA_LOG) << __func__ << "Started" << job << "for" << mailText;
     }
 }
 
 void CertificateLineEdit::Private::onLocateJobResult(QGpgME::Job *job, const QString &email, const KeyListResult &result, const std::vector<GpgME::Key> &keys)
 {
     if (mLocateJob != job) {
         qCDebug(KLEOPATRA_LOG) << __func__ << "Ignoring outdated finished" << job << "for" << email;
         return;
     }
     qCDebug(KLEOPATRA_LOG) << __func__ << job << "for" << email << "finished with" << Formatting::errorAsString(result.error()) << "and keys" << keys;
     mLocateJob.clear();
     if (!keys.empty() && !keys.front().isNull()) {
         KeyCache::mutableInstance()->insert(keys.front());
         // inserting the key implicitly triggers an update
     } else {
         // explicitly trigger an update to display "no key" error
         updateKey(CursorPositioning::MoveToStart);
     }
 }
 
 void CertificateLineEdit::Private::updateKey(CursorPositioning positioning)
 {
     static const _detail::ByFingerprint<std::equal_to> keysHaveSameFingerprint;
 
     const auto mailText = ui.lineEdit.text().trimmed();
     auto newKey = Key();
     auto newGroup = KeyGroup();
     if (mailText.isEmpty()) {
         mStatus = Status::Empty;
     } else {
         mFilterModel->setFilterRegularExpression(QRegularExpression::escape(mailText));
         if (mFilterModel->rowCount() > 1) {
             // keep current key or group if they still match
             if (!mKey.isNull()) {
                 for (int row = 0; row < mFilterModel->rowCount(); ++row) {
                     const QModelIndex index = mFilterModel->index(row, 0);
                     Key key = mFilterModel->key(index);
                     if (!key.isNull() && keysHaveSameFingerprint(key, mKey)) {
                         newKey = mKey;
                         break;
                     }
                 }
             } else if (!mGroup.isNull()) {
                 newGroup = mGroup;
                 for (int row = 0; row < mFilterModel->rowCount(); ++row) {
                     const QModelIndex index = mFilterModel->index(row, 0);
                     KeyGroup group = mFilterModel->group(index);
                     if (!group.isNull() && group.source() == mGroup.source() && group.id() == mGroup.id()) {
                         newGroup = mGroup;
                         break;
                     }
                 }
             }
             if (newKey.isNull() && newGroup.isNull()) {
                 mStatus = Status::Ambiguous;
             }
         } else if (mFilterModel->rowCount() == 1) {
             const auto index = mFilterModel->index(0, 0);
             newKey = mFilterModel->data(index, KeyList::KeyRole).value<Key>();
             newGroup = mFilterModel->data(index, KeyList::GroupRole).value<KeyGroup>();
             Q_ASSERT(!newKey.isNull() || !newGroup.isNull());
             if (newKey.isNull() && newGroup.isNull()) {
                 mStatus = Status::None;
             }
         } else {
             mStatus = Status::None;
         }
     }
     mKey = newKey;
     mGroup = newGroup;
 
     if (!mKey.isNull()) {
         /* FIXME: This needs to be solved by a multiple UID supporting model */
         mStatus = Status::Success;
         ui.lineEdit.setToolTip(Formatting::toolTip(mKey, Formatting::ToolTipOption::AllOptions));
         if (!mEditingInProgress) {
             setTextWithBlockedSignals(Formatting::summaryLine(mKey), positioning);
         }
     } else if (!mGroup.isNull()) {
         mStatus = Status::Success;
         ui.lineEdit.setToolTip(Formatting::toolTip(mGroup, Formatting::ToolTipOption::AllOptions));
         if (!mEditingInProgress) {
             setTextWithBlockedSignals(Formatting::summaryLine(mGroup), positioning);
         }
     } else {
         ui.lineEdit.setToolTip({});
     }
 
     mShowDetailsAction->setEnabled(mStatus == Status::Success);
     updateStatusAction();
     updateErrorLabel();
 
     Q_EMIT q->keyChanged();
 }
 
 QString CertificateLineEdit::Private::errorMessage() const
 {
     switch (mStatus) {
     case Status::Empty:
     case Status::Success:
         return {};
     case Status::None:
         return i18n("No matching certificates or groups found");
     case Status::Ambiguous:
         return i18n("Multiple matching certificates or groups found");
     default:
         qDebug(KLEOPATRA_LOG) << __func__ << "Invalid status:" << static_cast<int>(mStatus);
         Q_ASSERT(!"Invalid status");
     };
     return {};
 }
 
 QIcon CertificateLineEdit::Private::statusIcon() const
 {
     switch (mStatus) {
     case Status::Empty:
         return QIcon::fromTheme(QStringLiteral("emblem-unavailable"));
     case Status::Success:
         if (!mKey.isNull()) {
             return mIconProvider.icon(mKey);
         } else if (!mGroup.isNull()) {
             return mIconProvider.icon(mGroup);
         } else {
             qDebug(KLEOPATRA_LOG) << __func__ << "Success, but neither key nor group.";
             return {};
         }
     case Status::None:
     case Status::Ambiguous:
         if (mEditingInProgress || mLocateJob) {
             return QIcon::fromTheme(QStringLiteral("emblem-question"));
         } else {
             return QIcon::fromTheme(QStringLiteral("emblem-error"));
         }
     default:
         qDebug(KLEOPATRA_LOG) << __func__ << "Invalid status:" << static_cast<int>(mStatus);
         Q_ASSERT(!"Invalid status");
     };
     return {};
 }
 
 QString CertificateLineEdit::Private::statusToolTip() const
 {
     switch (mStatus) {
     case Status::Empty:
         return {};
     case Status::Success:
         if (!mKey.isNull()) {
             return Formatting::validity(mKey.userID(0));
         } else if (!mGroup.isNull()) {
             return Formatting::validity(mGroup);
         } else {
             qDebug(KLEOPATRA_LOG) << __func__ << "Success, but neither key nor group.";
             return {};
         }
     case Status::None:
     case Status::Ambiguous:
         return errorMessage();
     default:
         qDebug(KLEOPATRA_LOG) << __func__ << "Invalid status:" << static_cast<int>(mStatus);
         Q_ASSERT(!"Invalid status");
     };
     return {};
 }
 
 void CertificateLineEdit::Private::updateStatusAction()
 {
     mStatusAction->setIcon(statusIcon());
     mStatusAction->setToolTip(statusToolTip());
 }
 
 namespace
 {
 QString decoratedError(const QString &text)
 {
     return text.isEmpty() ? QString() : i18nc("@info", "Error: %1", text);
 }
 }
 
 void CertificateLineEdit::Private::updateErrorLabel()
 {
     const auto currentErrorMessage = ui.errorLabel.text();
     const auto newErrorMessage = decoratedError(errorMessage());
     if (newErrorMessage == currentErrorMessage) {
         return;
     }
     if (currentErrorMessage.isEmpty() && (mEditingInProgress || mLocateJob)) {
         // delay showing the error message until editing is finished, so that we
         // do not annoy the user with an error message while they are still
         // entering the recipient;
         // on the other hand, we clear the error message immediately if it does
         // not apply anymore and we update the error message immediately if it
         // changed
         return;
     }
     ui.errorLabel.setVisible(!newErrorMessage.isEmpty());
     ui.errorLabel.setText(newErrorMessage);
     updateAccessibleNameAndDescription();
 }
 
 void CertificateLineEdit::Private::setAccessibleName(const QString &s)
 {
     mAccessibleName = s;
     updateAccessibleNameAndDescription();
 }
 
 void CertificateLineEdit::Private::updateAccessibleNameAndDescription()
 {
     // fall back to default accessible name if accessible name wasn't set explicitly
     if (mAccessibleName.isEmpty()) {
         mAccessibleName = getAccessibleName(&ui.lineEdit);
     }
     const bool errorShown = ui.errorLabel.isVisible();
 
     // Qt does not support "described-by" relations (like WCAG's "aria-describedby" relationship attribute);
     // emulate this by setting the error message as accessible description of the input field
     const auto description = errorShown ? ui.errorLabel.text() : QString{};
     if (ui.lineEdit.accessibleDescription() != description) {
         ui.lineEdit.setAccessibleDescription(description);
     }
 
     // Qt does not support IA2's "invalid entry" state (like WCAG's "aria-invalid" state attribute);
     // screen readers say something like "invalid data" if this state is set;
     // emulate this by adding "invalid data" to the accessible name of the input field
     const auto name = errorShown ? mAccessibleName + QLatin1StringView{", "} + invalidEntryText() //
                                  : mAccessibleName;
     if (ui.lineEdit.accessibleName() != name) {
         ui.lineEdit.setAccessibleName(name);
     }
 }
 
 Key CertificateLineEdit::key() const
 {
     if (isEnabled()) {
         return d->mKey;
     } else {
         return Key();
     }
 }
 
 KeyGroup CertificateLineEdit::group() const
 {
     if (isEnabled()) {
         return d->mGroup;
     } else {
         return KeyGroup();
     }
 }
 
 QString CertificateLineEdit::Private::text() const
 {
     return ui.lineEdit.text().trimmed();
 }
 
 QString CertificateLineEdit::text() const
 {
     return d->text();
 }
 
 void CertificateLineEdit::Private::setKey(const Key &key)
 {
     mKey = key;
     mGroup = KeyGroup();
     qCDebug(KLEOPATRA_LOG) << "Setting Key. " << Formatting::summaryLine(key);
     // position cursor, so that that the start of the summary is visible
     setTextWithBlockedSignals(Formatting::summaryLine(key), CursorPositioning::MoveToStart);
     updateKey(CursorPositioning::MoveToStart);
 }
 
 void CertificateLineEdit::setKey(const Key &key)
 {
     d->setKey(key);
 }
 
 void CertificateLineEdit::Private::setGroup(const KeyGroup &group)
 {
     mGroup = group;
     mKey = Key();
     const QString summary = Formatting::summaryLine(group);
     qCDebug(KLEOPATRA_LOG) << "Setting KeyGroup. " << summary;
     // position cursor, so that that the start of the summary is visible
     setTextWithBlockedSignals(summary, CursorPositioning::MoveToStart);
     updateKey(CursorPositioning::MoveToStart);
 }
 
 void CertificateLineEdit::setGroup(const KeyGroup &group)
 {
     d->setGroup(group);
 }
 
 bool CertificateLineEdit::isEmpty() const
 {
     return d->mStatus == Private::Status::Empty;
 }
 
 bool CertificateLineEdit::isEditingInProgress() const
 {
     return d->mEditingInProgress;
 }
 
 bool CertificateLineEdit::hasAcceptableInput() const
 {
     return d->mStatus == Private::Status::Empty //
         || d->mStatus == Private::Status::Success;
 }
 
 void CertificateLineEdit::Private::setKeyFilter(const std::shared_ptr<KeyFilter> &filter)
 {
     mFilter = filter;
     mFilterModel->setKeyFilter(filter);
     mCompleterFilterModel->setKeyFilter(mFilter);
     updateKey(CursorPositioning::Default);
 }
 
 void CertificateLineEdit::setKeyFilter(const std::shared_ptr<KeyFilter> &filter)
 {
     d->setKeyFilter(filter);
 }
 
 void CertificateLineEdit::setAccessibleNameOfLineEdit(const QString &name)
 {
     d->setAccessibleName(name);
 }
 
 #include "certificatelineedit.moc"
 
 #include "moc_certificatelineedit.cpp"