qt: Add API to get the context for a Job

* lang/qt/src/job.cpp,
lang/qt/src/job.h (Job::context): New.
* lang/qt/src/threadedjobmixin.cpp
(ThreadedJobMixin::~ThreadedJobMixin): New. Unregister context.
(ThreadedJobMixin::lateInitialization): Register context.
* NEWS: Update for cpp and qt.

--
The global map hack is necessary because the job class does
not know about the context which is held in threadedjobmixin.
Adding a virtual function in Job would be an ABI break which
I'd like to avoid at this point. Although QGpgME's API will
need a big ABI break to make it ABI maintainable. The virtual
jobs -> implementation classes are nearly unmaintainable ABI wise.

The context is exposed to provide more flexibility to users, e.g.
to add a passphrase callback or to set the sender in a context.

1 files changed, 7 insertions, 1 deletions

diff --git a/lang/qt/src/threadedjobmixin.h b/lang/qt/src/threadedjobmixin.h
index d1b10432..aef2723a 100644
--- a/lang/qt/src/threadedjobmixin.h
+++ b/lang/qt/src/threadedjobmixin.h
@@ -48,6 +48,7 @@
 # include <gpgme++/interfaces/progressprovider.h>
 #endif
 
+#include "job.h"
 
 #include <cassert>
 
@@ -147,7 +148,6 @@ protected:
     explicit ThreadedJobMixin(GpgME::Context *ctx)
         : T_base(0), m_ctx(ctx), m_thread(), m_auditLog(), m_auditLogError()
     {
-
     }
 
     void lateInitialization()
@@ -155,6 +155,12 @@ protected:
         assert(m_ctx);
         QObject::connect(&m_thread, SIGNAL(finished()), this, SLOT(slotFinished()));
         m_ctx->setProgressProvider(this);
+        QGpgME::g_context_map.insert(this, m_ctx.get());
+    }
+
+    ~ThreadedJobMixin()
+    {
+        QGpgME::g_context_map.remove(this);
     }
 
     template <typename T_binder>