* Protect DynamicPlaylists, too.

* Only load the five most recent playlists & 25 tracks in the WelcomeWidget.

src/libtomahawk/database/databasecommand_setplaylistrevision.cpp

@@ -40,7 +40,6 @@ DatabaseCommand_SetPlaylistRevision::DatabaseCommand_SetPlaylistRevision(
     , m_entries( entries )
 {
     Q_ASSERT( !newrev.isEmpty() );
-    Q_ASSERT( !oldrev.isEmpty() );
     m_localOnly = ( newrev == oldrev );
 
     setPlaylistguid( playlistguid );

src/libtomahawk/playlist.cpp

@@ -175,7 +175,7 @@ Playlist::create( const source_ptr& author,
     // reportCreated for us automatically, which should cause new playlists to be added to the GUI.
 
     DatabaseCommand_CreatePlaylist* cmd = new DatabaseCommand_CreatePlaylist( author, playlist );
-    connect( cmd, SIGNAL(finished()), playlist.data(), SIGNAL(created()) );
+    connect( cmd, SIGNAL( finished() ), playlist.data(), SIGNAL( created() ) );
     Database::instance()->enqueue( QSharedPointer<DatabaseCommand>(cmd) );
     playlist->reportCreated( playlist );
     return playlist;
@@ -244,6 +244,7 @@ Playlist::loadRevision( const QString& rev )
 {
     qDebug() << Q_FUNC_INFO << currentrevision() << rev << m_title;
 
+    setBusy( true );
     DatabaseCommand_LoadPlaylistEntries* cmd =
             new DatabaseCommand_LoadPlaylistEntries( rev.isEmpty() ? currentrevision() : rev );
 

src/libtomahawk/playlist.h

@@ -114,6 +114,7 @@ Q_PROPERTY( bool    shared          READ shared             WRITE setShared )
 friend class ::DatabaseCommand_LoadAllPlaylists;
 friend class ::DatabaseCommand_SetPlaylistRevision;
 friend class ::DatabaseCommand_CreatePlaylist;
+friend class DynamicPlaylist;
 
 public:
     ~Playlist();

src/libtomahawk/playlist/dynamic/DynamicPlaylist.cpp

@@ -153,6 +153,9 @@ DynamicPlaylist::createNewRevision( const QString& newrev,
                                     const QList< dyncontrol_ptr>& controls,
                                     const QList< plentry_ptr >& entries )
 {
+    Q_ASSERT( !busy() );
+    setBusy( true );
+
     // get the newly added tracks
     QList< plentry_ptr > added = newEntries( entries );
 
@@ -162,21 +165,21 @@ DynamicPlaylist::createNewRevision( const QString& newrev,
 
     // no conflict resolution or partial updating for controls. all or nothing baby
 
-        // source making the change (local user in this case)
-        source_ptr author = SourceList::instance()->getLocal();
-        // command writes new rev to DB and calls setRevision, which emits our signal
-        DatabaseCommand_SetDynamicPlaylistRevision* cmd =
-        new DatabaseCommand_SetDynamicPlaylistRevision( author,
-                                                        guid(),
-                                                        newrev,
-                                                        oldrev,
-                                                        orderedguids,
-                                                        added,
-                                                        entries,
-                                                        type,
-                                                        Static,
-                                                        controls );
-        Database::instance()->enqueue( QSharedPointer<DatabaseCommand>( cmd ) );
+    // source making the change (local user in this case)
+    source_ptr author = SourceList::instance()->getLocal();
+    // command writes new rev to DB and calls setRevision, which emits our signal
+    DatabaseCommand_SetDynamicPlaylistRevision* cmd =
+    new DatabaseCommand_SetDynamicPlaylistRevision( author,
+                                                    guid(),
+                                                    newrev,
+                                                    oldrev,
+                                                    orderedguids,
+                                                    added,
+                                                    entries,
+                                                    type,
+                                                    Static,
+                                                    controls );
+    Database::instance()->enqueue( QSharedPointer<DatabaseCommand>( cmd ) );
 }
 
 // create a new revision that will be an ondemand playlist, as it has no entries
@@ -205,6 +208,7 @@ DynamicPlaylist::loadRevision( const QString& rev )
 {
     qDebug() << Q_FUNC_INFO << "Loading with:" << ( rev.isEmpty() ? currentrevision() : rev );
 
+    setBusy( true );
     DatabaseCommand_LoadDynamicPlaylist* cmd = new DatabaseCommand_LoadDynamicPlaylist( rev.isEmpty() ? currentrevision() : rev );
 
     if( m_generator->mode() == OnDemand ) {
@@ -335,10 +339,11 @@ void DynamicPlaylist::setRevision( const QString& rev,
     dpr.type = type;
     dpr.mode = Static;
 
-    if( applied ) {
+    if( applied )
         setCurrentrevision( rev );
-    }
+
     //     qDebug() << "EMITTING REVISION LOADED 1!";
+    setBusy( false );
     emit dynamicRevisionLoaded( dpr );
 }
 

src/libtomahawk/playlist/playlistmodel.cpp

@@ -221,7 +221,11 @@ void
 PlaylistModel::trackResolved( bool )
 {
     Tomahawk::Query* q = qobject_cast< Query* >( sender() );
-    Q_ASSERT( q );
+    if ( !q )
+    {
+        // Track has been removed from the playlist by now
+        return;
+    }
 
     m_waitingForResolved.removeAll( q );
     disconnect( q, SIGNAL( resolvingFinished( bool ) ), this, SLOT( trackResolved( bool ) ) );

src/libtomahawk/tomahawksettings.cpp

@@ -385,9 +385,14 @@ TomahawkSettings::recentlyPlayedPlaylists() const
 }
 
 QStringList
-TomahawkSettings::recentlyPlayedPlaylistGuids() const
+TomahawkSettings::recentlyPlayedPlaylistGuids( unsigned int amount ) const
 {
-    return value( "playlists/recentlyPlayed" ).toStringList();
+    QStringList p = value( "playlists/recentlyPlayed" ).toStringList();
+
+    while ( amount && p.count() > (int)amount )
+        p.removeAt( p.count() - 1 );
+
+    return p;
 }
 
 

src/libtomahawk/tomahawksettings.h

@@ -66,7 +66,7 @@ public:
     void setPlaylistColumnSizes( const QString& playlistid, const QByteArray& state );
 
     QList<Tomahawk::playlist_ptr> recentlyPlayedPlaylists() const;
-    QStringList recentlyPlayedPlaylistGuids() const;
+    QStringList recentlyPlayedPlaylistGuids( unsigned int amount = 0 ) const;
     void appendRecentlyPlayedPlaylist( const Tomahawk::playlist_ptr& playlist );
 
     /// SIP plugins

src/libtomahawk/widgets/welcomeplaylistmodel.cpp

@@ -28,6 +28,7 @@ using namespace Tomahawk;
 WelcomePlaylistModel::WelcomePlaylistModel( QObject* parent )
     : QAbstractListModel( parent )
     , m_waitingForSome( true )
+    , m_maxPlaylists( 0 )
 {
     loadFromSettings();
 
@@ -49,7 +50,7 @@ WelcomePlaylistModel::loadFromSettings()
     m_recplaylists.clear();
     m_waitingForSome = false;
 
-    QStringList playlist_guids = TomahawkSettings::instance()->recentlyPlayedPlaylistGuids();
+    QStringList playlist_guids = TomahawkSettings::instance()->recentlyPlayedPlaylistGuids( m_maxPlaylists );
 
     for( int i = playlist_guids.size() - 1; i >= 0; i-- )
     {

src/libtomahawk/widgets/welcomeplaylistmodel.h

@@ -34,6 +34,9 @@ public:
     { ArtistRole = Qt::UserRole, TrackCountRole, PlaylistRole };
 
     explicit WelcomePlaylistModel( QObject* parent = 0 );
+
+    void setMaxPlaylists( unsigned int max ) { m_maxPlaylists = max; }
+
     virtual QVariant data( const QModelIndex& index, int role = Qt::DisplayRole ) const;
     virtual int rowCount( const QModelIndex& parent = QModelIndex() ) const;
 
@@ -53,6 +56,7 @@ private:
     QHash< QString, Tomahawk::playlist_ptr > m_cached;
     mutable QHash< Tomahawk::playlist_ptr, QString > m_artists;
 
+    unsigned int m_maxPlaylists;
     bool m_waitingForSome;
 };
 

src/libtomahawk/widgets/welcomewidget.cpp

@@ -33,8 +33,8 @@
 #include <QPainter>
 #include "welcomeplaylistmodel.h"
 
-#define HISTORY_TRACK_ITEMS 50
-#define HISTORY_PLAYLIST_ITEMS 10
+#define HISTORY_TRACK_ITEMS 25
+#define HISTORY_PLAYLIST_ITEMS 5
 #define HISTORY_RESOLVING_TIMEOUT 2500
 
 
@@ -44,14 +44,15 @@ WelcomeWidget::WelcomeWidget( QWidget* parent )
 {
     ui->setupUi( this );
 
+    WelcomePlaylistModel* model = new WelcomePlaylistModel( this );
+    model->setMaxPlaylists( HISTORY_PLAYLIST_ITEMS );
+
     ui->playlistWidget->setItemDelegate( new PlaylistDelegate() );
-    WelcomePlaylistModel* model =  new WelcomePlaylistModel( this );
     ui->playlistWidget->setModel( model );
     ui->playlistWidget->overlay()->resize( 380, 86 );
     ui->tracksView->overlay()->setEnabled( false );
 
-    connect( model,SIGNAL( emptinessChanged( bool) ), this, SLOT( updatePlaylists() ) );
-
+    connect( model, SIGNAL( emptinessChanged( bool) ), this, SLOT( updatePlaylists() ) );
 
     m_tracksModel = new PlaylistModel( ui->tracksView );
     ui->tracksView->setPlaylistModel( m_tracksModel );