[finished] Expand Config object's repertoire of notification-API

src/modules/finished/Config.cpp

@@ -121,10 +121,11 @@ Config::doRestart()
 
 
 void
-Config::doNotify( bool hasFailed )
+Config::doNotify( bool hasFailed, bool sendAnyway )
 {
-    if ( !notifyOnFinished() )
+    if ( !sendAnyway )
     {
+        cDebug() << "Notification failed?" << hasFailed << "not sent.";
         return;
     }
 

src/modules/finished/Config.h

@@ -76,14 +76,21 @@ public Q_SLOTS:
      */
     void doRestart();
 
-    /** @brief Send DBus notification, if desired.
-     *
-     * This takes notifyOnFinished() into account.
+    /** @brief Send DBus notification
      *
      * At the end of installation (when the FinishedViewStep is activated),
      * send a desktop notification via DBus that the install is done.
+     *
+     * - The two-argument form sends success or failure, and can be
+     *   forced to send by setting @p sendAnyway to @c true.
+     * - The one-argument form sends success or failure and takes
+     *   the notifyOnFinished() configuration into account.
+     * - The no-argument form checks if a failure was signalled previously
+     *   and uses that to decide if it was a failure.
+     *
      */
-    void doNotify( bool hasFailed );
+    void doNotify( bool hasFailed, bool sendAnyway );
+    void doNotify( bool hasFailed ) { doNotify( hasFailed, notifyOnFinished() ); }
     void doNotify() { doNotify( hasFailed() ); }
 
     /** @brief Tell the config the install failed