From 67e30668dd19db37a5a9329e9b081a8b95c28176 Mon Sep 17 00:00:00 2001
From: Christian Muehlhaeuser <muesli@gmail.com>
Date: Thu, 30 May 2013 04:22:06 +0200
Subject: [PATCH] * Disable / enable alternate row colors when required.

---
 src/libtomahawk/playlist/TrackView.cpp | 20 +++++++++++++++++++-
 src/libtomahawk/playlist/TrackView.h   |  2 ++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/libtomahawk/playlist/TrackView.cpp b/src/libtomahawk/playlist/TrackView.cpp
index aedae4d89..19f440086 100644
--- a/src/libtomahawk/playlist/TrackView.cpp
+++ b/src/libtomahawk/playlist/TrackView.cpp
@@ -64,7 +64,6 @@ TrackView::TrackView( QWidget* parent )
 
     setContentsMargins( 0, 0, 0, 0 );
     setMouseTracking( true );
-    setAlternatingRowColors( true );
     setSelectionMode( QAbstractItemView::ExtendedSelection );
     setSelectionBehavior( QAbstractItemView::SelectRows );
     setDragEnabled( true );
@@ -147,6 +146,8 @@ TrackView::setProxyModel( PlayableProxyModel* model )
 {
     if ( m_proxyModel )
     {
+        disconnect( m_proxyModel, SIGNAL( rowsAboutToBeInserted( QModelIndex, int, int ) ), this, SLOT( onModelFilling() ) );
+        disconnect( m_proxyModel, SIGNAL( rowsRemoved( QModelIndex, int, int ) ), this, SLOT( onModelEmptyCheck() ) );
         disconnect( m_proxyModel, SIGNAL( filterChanged( QString ) ), this, SLOT( onFilterChanged( QString ) ) );
         disconnect( m_proxyModel, SIGNAL( rowsInserted( QModelIndex, int, int ) ), this, SLOT( onViewChanged() ) );
         disconnect( m_proxyModel, SIGNAL( rowsInserted( QModelIndex, int, int ) ), this, SLOT( verifySize() ) );
@@ -155,6 +156,8 @@ TrackView::setProxyModel( PlayableProxyModel* model )
 
     m_proxyModel = model;
 
+    connect( m_proxyModel, SIGNAL( rowsAboutToBeInserted( QModelIndex, int, int ) ), SLOT( onModelFilling() ) );
+    connect( m_proxyModel, SIGNAL( rowsRemoved( QModelIndex, int, int ) ), SLOT( onModelEmptyCheck() ) );
     connect( m_proxyModel, SIGNAL( filterChanged( QString ) ), SLOT( onFilterChanged( QString ) ) );
     connect( m_proxyModel, SIGNAL( rowsInserted( QModelIndex, int, int ) ), SLOT( onViewChanged() ) );
     connect( m_proxyModel, SIGNAL( rowsInserted( QModelIndex, int, int ) ), SLOT( verifySize() ) );
@@ -227,6 +230,21 @@ TrackView::setEmptyTip( const QString& tip )
 }
 
 
+void
+TrackView::onModelFilling()
+{
+    setAlternatingRowColors( true );
+}
+
+
+void
+TrackView::onModelEmptyCheck()
+{
+    if ( !m_proxyModel->rowCount( QModelIndex() ) )
+        setAlternatingRowColors( false );
+}
+
+
 void
 TrackView::onViewChanged()
 {
diff --git a/src/libtomahawk/playlist/TrackView.h b/src/libtomahawk/playlist/TrackView.h
index 947da07fb..3549a06a9 100644
--- a/src/libtomahawk/playlist/TrackView.h
+++ b/src/libtomahawk/playlist/TrackView.h
@@ -121,6 +121,8 @@ protected slots:
 private slots:
     void onItemResized( const QModelIndex& index );
     void onFilterChanged( const QString& filter );
+    void onModelFilling();
+    void onModelEmptyCheck();
 
     void onCustomContextMenu( const QPoint& pos );