From 5949f49e112df1598a611c2ff2aa5d8a6950efce Mon Sep 17 00:00:00 2001
From: Tobias Doerffel <tobias.doerffel@gmail.com>
Date: Sun, 23 Jan 2011 23:10:04 +0100
Subject: [PATCH] Add BB track when adding track to empty BB editor

When there's no BB track but a track is added to the BB editor,
automatically create a BB track so that the user doesn't get confused
by new empty track (not even showing clickable beats).

Partially closes #3149779.
(cherry picked from commit 4cad9517aa4892b6495898f35efeb1805c4be2e0)
---
 include/song.h                  | 3 ++-
 src/core/bb_track_container.cpp | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/song.h b/include/song.h
index 5c0d619e0..3fabae1af 100644
--- a/include/song.h
+++ b/include/song.h
@@ -219,11 +219,12 @@ public slots:
 
 	void clearProject();
 
+	void addBBTrack();
+
 
 private slots:
 	void insertBar();
 	void removeBar();
-	void addBBTrack();
 	void addSampleTrack();
 	void addAutomationTrack();
 
diff --git a/src/core/bb_track_container.cpp b/src/core/bb_track_container.cpp
index d44d7c09f..f95e8211d 100644
--- a/src/core/bb_track_container.cpp
+++ b/src/core/bb_track_container.cpp
@@ -83,6 +83,11 @@ bool bbTrackContainer::play( midiTime _start, fpp_t _frames,
 
 void bbTrackContainer::updateAfterTrackAdd()
 {
+	if( numOfBBs() == 0 && !engine::getSong()->isLoadingProject() )
+	{
+		engine::getSong()->addBBTrack();
+	}
+
 	// make sure, new track(s) have TCOs for every beat/bassline
 	for( int i = 0; i < qMax<int>( 1, numOfBBs() ); ++i )
 	{