* Fixed DbCmds for offline sources. Well hopefully.

src/libtomahawk/database/databasecommand_addfiles.cpp

@@ -33,6 +33,11 @@ void
 DatabaseCommand_AddFiles::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO;
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
 
     // make the collection object emit its tracksAdded signal, so the
     // collection browser will update/fade in etc.

src/libtomahawk/database/databasecommand_createdynamicplaylist.cpp

@@ -79,6 +79,12 @@ void
 DatabaseCommand_CreateDynamicPlaylist::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO;
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
+    
     if( report() == false )
         return;
     

src/libtomahawk/database/databasecommand_createplaylist.cpp

@@ -38,6 +38,11 @@ void
 DatabaseCommand_CreatePlaylist::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO;
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
     if( m_report == false )
         return;
 

src/libtomahawk/database/databasecommand_deletedynamicplaylist.cpp

@@ -46,6 +46,11 @@ void
 DatabaseCommand_DeleteDynamicPlaylist::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO << "..reporting..:" << m_playlistguid;
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
     
     dynplaylist_ptr playlist = source()->collection()->dynamicPlaylist( m_playlistguid );
     Q_ASSERT( !playlist.isNull() );

src/libtomahawk/database/databasecommand_deleteplaylist.cpp

@@ -34,6 +34,11 @@ void
 DatabaseCommand_DeletePlaylist::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO << "..reporting..";
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
     
     playlist_ptr playlist = source()->collection()->playlist( m_playlistguid );
     Q_ASSERT( !playlist.isNull() );

src/libtomahawk/database/databasecommand_logplayback.cpp

@@ -15,6 +15,11 @@ void
 DatabaseCommand_LogPlayback::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO;
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
     
     connect( this, SIGNAL( trackPlaying( Tomahawk::query_ptr ) ),
              source().data(), SIGNAL( playbackStarted( Tomahawk::query_ptr ) ), Qt::QueuedConnection );

src/libtomahawk/database/databasecommand_renameplaylist.cpp

@@ -37,6 +37,11 @@ void
 DatabaseCommand_RenamePlaylist::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO << "..reporting..";
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
     
     playlist_ptr playlist = source()->collection()->playlist( m_playlistguid );
     Q_ASSERT( !playlist.isNull() );

src/libtomahawk/database/databasecommand_setdynamicplaylistrevision.cpp

@@ -60,6 +60,11 @@ void
 DatabaseCommand_SetDynamicPlaylistRevision::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO;
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
     
     QStringList orderedentriesguids;
     foreach( const QVariant& v, orderedguids() )

src/libtomahawk/database/databasecommand_setplaylistrevision.cpp

@@ -37,6 +37,11 @@ void
 DatabaseCommand_SetPlaylistRevision::postCommitHook()
 {
     qDebug() << Q_FUNC_INFO;
+    if ( source().isNull() || source()->collection().isNull() )
+    {
+        qDebug() << "Source has gone offline, not emitting to GUI.";
+        return;
+    }
     
     if ( m_localOnly )
         return;

src/libtomahawk/database/databaseworker.cpp

@@ -87,7 +87,6 @@ DatabaseWorker::doWork()
     }
     try
     {
-        if ( !cmd->source().isNull() && !cmd->source()->collection().isNull() )
         {
             cmd->_exec( m_dbimpl ); // runs actual SQL stuff