qt: Add support for revoke signature quick command

* lang/qt/src/quickjob.h (QuickJob::startRevokeSignature): New.
* lang/qt/src/qgpgmequickjob.h, lang/qt/src/qgpgmequickjob.cpp
(QGpgMEQuickJob::startRevokeSignature): New.
* lang/qt/src/qgpgmequickjob.cpp (revokeSignatureWorker): New.
--

GnuPG-bug-id: 5094

NEWS

@@ -14,6 +14,8 @@ Noteworthy changes in version 1.14.1 (unreleased)
  * qt: Extended ChangeExpiryJob to support changing the expiry of
    subkeys. [#4717]
 
+ * qt: Extended QuickJob to support revoking of key signatures. [#5094]
+
  * qt: Added QDebug stream operator for GpgME::Error.
 
  * Interface changes relative to the 1.14.0 release:
@@ -34,6 +36,7 @@ Noteworthy changes in version 1.14.1 (unreleased)
  cpp: Context::revokeSignature              NEW.
  cpp: Context::startRevokeSignature         NEW.
  qt: operator<<(QDebug debug, const GpgME::Error &err) NEW.
+ qt: QuickJob::startRevokeSignature         NEW.
 
 
 Noteworthy changes in version 1.14.0 (2020-07-16)

lang/qt/src/qgpgmequickjob.cpp

@@ -1,6 +1,9 @@
-/* qgpgmequickjob.cpp
+/*  qgpgmequickjob.cpp
 
+    This file is part of qgpgme, the Qt API binding for gpgme
     Copyright (c) 2017 Intevation GmbH
+    Copyright (c) 2020 g10 Code GmbH
+    Software engineering by Ingo Klöcker <dev@ingo-kloecker.de>
 
     QGpgME is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -47,7 +50,9 @@ QGpgMEQuickJob::QGpgMEQuickJob(Context *context)
     lateInitialization();
 }
 
-QGpgMEQuickJob::~QGpgMEQuickJob() {}
+QGpgMEQuickJob::~QGpgMEQuickJob()
+{
+}
 
 static QGpgMEQuickJob::result_type createWorker(GpgME::Context *ctx,
                                                 const QString &uid,
@@ -93,6 +98,15 @@ static QGpgMEQuickJob::result_type revUidWorker(GpgME::Context *ctx,
     return std::make_tuple(err, QString(), Error());
 }
 
+static QGpgMEQuickJob::result_type revokeSignatureWorker(Context *ctx,
+                                                         const Key &key,
+                                                         const Key &signingKey,
+                                                         const std::vector<UserID> &userIds)
+{
+    const auto err = ctx->revokeSignature(key, signingKey, userIds);
+    return std::make_tuple(err, QString(), Error());
+}
+
 void QGpgMEQuickJob::startCreate(const QString &uid,
                  const char *algo,
                  const QDateTime &expires,
@@ -120,4 +134,10 @@ void QGpgMEQuickJob::startAddSubkey(const GpgME::Key &key, const char *algo,
     run(std::bind(&addSubkeyWorker, std::placeholders::_1, key, algo,
                   expires, flags));
 }
+
+void QGpgMEQuickJob::startRevokeSignature(const Key &key, const Key &signingKey, const std::vector<UserID> &userIds)
+{
+    run(std::bind(&revokeSignatureWorker, std::placeholders::_1, key, signingKey, userIds));
+}
+
 #include "qgpgmequickjob.moc"

lang/qt/src/qgpgmequickjob.h

@@ -1,6 +1,9 @@
 /*  qgpgmequickjob.h
 
+    This file is part of qgpgme, the Qt API binding for gpgme
     Copyright (c) 2017 Intevation GmbH
+    Copyright (c) 2020 g10 Code GmbH
+    Software engineering by Ingo Klöcker <dev@ingo-kloecker.de>
 
     QGpgME is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -66,6 +69,8 @@ public:
     void startAddSubkey(const GpgME::Key &key, const char *algo,
                         const QDateTime &expires = QDateTime(),
                         unsigned int flags = 0) Q_DECL_OVERRIDE;
+    void startRevokeSignature(const GpgME::Key &key, const GpgME::Key &signingKey,
+                              const std::vector<GpgME::UserID> &userIds = std::vector<GpgME::UserID>()) Q_DECL_OVERRIDE;
 };
 
 }

lang/qt/src/quickjob.h

@@ -1,6 +1,9 @@
 /*  quickjob.h
 
+    This file is part of qgpgme, the Qt API binding for gpgme
     Copyright (c) 2017 Intevation GmbH
+    Copyright (c) 2020 g10 Code GmbH
+    Software engineering by Ingo Klöcker <dev@ingo-kloecker.de>
 
     QGpgME is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -74,6 +77,14 @@ public:
                                 const QDateTime &expires = QDateTime(),
                                 unsigned int flags = 0) = 0;
 
+    /**
+       Starts the operation to revoke the signatures made with the key \a signingKey on the
+       user IDs \a userIds of the key \a key. If \a userIds is an empty list, then all
+       signatures made with \a signingKey on the user IDs of \a key will be revoked.
+    */
+    virtual void startRevokeSignature(const GpgME::Key &key, const GpgME::Key &signingKey,
+                                      const std::vector<GpgME::UserID> &userIds = std::vector<GpgME::UserID>()) = 0;
+
 Q_SIGNALS:
     void result(const GpgME::Error &error,
                 const QString &auditLogAsHtml, const GpgME::Error &auditLogError);