From 085907dfe72f78eb6f43582ccf43415043a6bb3d Mon Sep 17 00:00:00 2001
From: Christian Muehlhaeuser <muesli@gmail.com>
Date: Tue, 4 Dec 2012 03:15:10 +0100
Subject: [PATCH] * Check prev/next availability in Album- &
 ArtistPlaylistInterface.

---
 src/libtomahawk/AlbumPlaylistInterface.cpp  | 19 ++++++++++++++++---
 src/libtomahawk/AlbumPlaylistInterface.h    |  3 ++-
 src/libtomahawk/ArtistPlaylistInterface.cpp | 21 +++++++++++++++++----
 src/libtomahawk/ArtistPlaylistInterface.h   |  3 ++-
 4 files changed, 37 insertions(+), 9 deletions(-)

diff --git a/src/libtomahawk/AlbumPlaylistInterface.cpp b/src/libtomahawk/AlbumPlaylistInterface.cpp
index fb2596ef5..d2290e297 100644
--- a/src/libtomahawk/AlbumPlaylistInterface.cpp
+++ b/src/libtomahawk/AlbumPlaylistInterface.cpp
@@ -36,7 +36,6 @@ using namespace Tomahawk;
 AlbumPlaylistInterface::AlbumPlaylistInterface( Tomahawk::Album* album, Tomahawk::ModelMode mode, const Tomahawk::collection_ptr& collection )
     : Tomahawk::PlaylistInterface()
     , m_currentItem( 0 )
-    , m_currentTrack( 0 )
     , m_infoSystemLoaded( false )
     , m_databaseLoaded( false )
     , m_mode( mode )
@@ -55,7 +54,8 @@ AlbumPlaylistInterface::~AlbumPlaylistInterface()
 void
 AlbumPlaylistInterface::setCurrentIndex( qint64 index )
 {
-    m_currentTrack = index;
+    PlaylistInterface::setCurrentIndex( index );
+
     m_currentItem = m_queries.at( index )->results().first();
 }
 
@@ -63,7 +63,7 @@ AlbumPlaylistInterface::setCurrentIndex( qint64 index )
 qint64
 AlbumPlaylistInterface::siblingIndex( int itemsAway, qint64 rootIndex ) const
 {
-    qint64 p = m_currentTrack;
+    qint64 p = m_currentIndex;
     if ( rootIndex >= 0 )
         p = rootIndex;
 
@@ -181,6 +181,7 @@ AlbumPlaylistInterface::infoSystemInfo( Tomahawk::InfoSystem::InfoRequestData re
                 Pipeline::instance()->resolve( ql );
 
                 m_queries << ql;
+                checkQueries();
             }
 
             break;
@@ -243,6 +244,8 @@ AlbumPlaylistInterface::onTracksLoaded( const QList< query_ptr >& tracks )
     else
         m_queries << tracks;
 
+    checkQueries();
+
     m_finished = true;
     emit tracksLoaded( m_mode, m_collection );
 }
@@ -301,3 +304,13 @@ AlbumPlaylistInterface::resultAt( qint64 index ) const
 
     return Tomahawk::result_ptr();
 }
+
+
+void
+AlbumPlaylistInterface::checkQueries()
+{
+    foreach ( const Tomahawk::query_ptr& query, m_queries )
+    {
+        connect( query.data(), SIGNAL( playableStateChanged( bool ) ), SLOT( onItemsChanged() ), Qt::UniqueConnection );
+    }
+}
diff --git a/src/libtomahawk/AlbumPlaylistInterface.h b/src/libtomahawk/AlbumPlaylistInterface.h
index 83a52ee46..a63f41f17 100644
--- a/src/libtomahawk/AlbumPlaylistInterface.h
+++ b/src/libtomahawk/AlbumPlaylistInterface.h
@@ -70,9 +70,10 @@ private slots:
     void infoSystemFinished( const QString& infoId );
 
 private:
+    void checkQueries();
+
     QList< Tomahawk::query_ptr > m_queries;
     mutable result_ptr m_currentItem;
-    mutable qint64 m_currentTrack;
 
     bool m_infoSystemLoaded;
     bool m_databaseLoaded;
diff --git a/src/libtomahawk/ArtistPlaylistInterface.cpp b/src/libtomahawk/ArtistPlaylistInterface.cpp
index 033093930..451764fe5 100644
--- a/src/libtomahawk/ArtistPlaylistInterface.cpp
+++ b/src/libtomahawk/ArtistPlaylistInterface.cpp
@@ -35,7 +35,6 @@ using namespace Tomahawk;
 ArtistPlaylistInterface::ArtistPlaylistInterface( Tomahawk::Artist* artist, Tomahawk::ModelMode mode, const Tomahawk::collection_ptr& collection )
     : Tomahawk::PlaylistInterface()
     , m_currentItem( 0 )
-    , m_currentTrack( 0 )
     , m_infoSystemLoaded( false )
     , m_databaseLoaded( false )
     , m_mode( mode )
@@ -54,15 +53,16 @@ ArtistPlaylistInterface::~ArtistPlaylistInterface()
 void
 ArtistPlaylistInterface::setCurrentIndex( qint64 index )
 {
-    m_currentTrack = index;
-    m_currentItem = m_queries.at( index )->results().first();
+    PlaylistInterface::setCurrentIndex( index );
+
+   m_currentItem = m_queries.at( index )->results().first();
 }
 
 
 qint64
 ArtistPlaylistInterface::siblingIndex( int itemsAway, qint64 rootIndex ) const
 {
-    qint64 p = m_currentTrack;
+    qint64 p = m_currentIndex;
     if ( rootIndex >= 0 )
         p = rootIndex;
 
@@ -162,6 +162,7 @@ ArtistPlaylistInterface::infoSystemInfo( Tomahawk::InfoSystem::InfoRequestData r
                 Pipeline::instance()->resolve( ql );
 
                 m_queries << ql;
+                checkQueries();
             }
 
             break;
@@ -223,6 +224,8 @@ ArtistPlaylistInterface::onTracksLoaded( const QList< query_ptr >& tracks )
     else
         m_queries << tracks;
 
+    checkQueries();
+
     m_finished = true;
     emit tracksLoaded( m_mode, m_collection );
 }
@@ -281,3 +284,13 @@ ArtistPlaylistInterface::resultAt( qint64 index ) const
 
     return Tomahawk::result_ptr();
 }
+
+
+void
+ArtistPlaylistInterface::checkQueries()
+{
+    foreach ( const Tomahawk::query_ptr& query, m_queries )
+    {
+        connect( query.data(), SIGNAL( playableStateChanged( bool ) ), SLOT( onItemsChanged() ), Qt::UniqueConnection );
+    }
+}
diff --git a/src/libtomahawk/ArtistPlaylistInterface.h b/src/libtomahawk/ArtistPlaylistInterface.h
index dd0508a51..c728f1c2a 100644
--- a/src/libtomahawk/ArtistPlaylistInterface.h
+++ b/src/libtomahawk/ArtistPlaylistInterface.h
@@ -69,9 +69,10 @@ private slots:
 private:
     Q_DISABLE_COPY( ArtistPlaylistInterface )
 
+    void checkQueries();
+
     QList< Tomahawk::query_ptr > m_queries;
     mutable result_ptr m_currentItem;
-    mutable qint64 m_currentTrack;
 
     bool m_infoSystemLoaded;
     bool m_databaseLoaded;