[vlc-commits] commit: skins2: fix skins crashing when playlist is flat (Erwan Tulou )

[git at videolan.org]

vlc | branch: master | Erwan Tulou <erwan10 at videolan.org> | Thu May  6 20:09:25 2010 +0200| [1ef175cb28927f1ad01acabaf6e09936c451dc60] | committer: Erwan Tulou 

skins2: fix skins crashing when playlist is flat

m_firstPos (iterator associated to a stl list container) is not guaranteed to be valid (the associated item may have been deleted). Up to vlc1.0, this was no problem, because deleting an item was also buggy (a no-op). From vlc1.1 on, m_firstPos must now be recomputed to ensure it keeps on pointing to a valid item in all cases.

start for instance a playlist with the 'Dragon' skin as a test case.
This was pointed out by colt45 (from the forum)

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=1ef175cb28927f1ad01acabaf6e09936c451dc60
---

 modules/gui/skins2/controls/ctrl_tree.cpp |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/modules/gui/skins2/controls/ctrl_tree.cpp b/modules/gui/skins2/controls/ctrl_tree.cpp
index 3048254..27ffdd2 100644
--- a/modules/gui/skins2/controls/ctrl_tree.cpp
+++ b/modules/gui/skins2/controls/ctrl_tree.cpp
@@ -138,6 +138,8 @@ int CtrlTree::maxItems()
 void CtrlTree::onUpdate( Subject<VarTree, tree_update> &rTree,
                          tree_update *arg )
 {
+    m_firstPos = m_flat ? m_rTree.firstLeaf() : m_rTree.begin();
+
     if( arg->i_type == 0 ) // Item update
     {
         if( arg->b_active_item )
@@ -150,7 +152,6 @@ void CtrlTree::onUpdate( Subject<VarTree, tree_update> &rTree,
     /// \todo handle delete in a more clever way
     else if ( arg->i_type == 1 ) // Global change or deletion
     {
-        m_firstPos = m_flat ? m_rTree.firstLeaf() : m_rTree.begin();
         makeImage();
     }
     else if ( arg->i_type == 2 ) // Item-append