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FIX: crash when clear an ordered listbox

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This commit is contained in:
qPCR4vir 2015-04-29 12:44:52 +02:00
parent 611d295fc8
commit 4fcd2edd54
1 changed files with 38 additions and 12 deletions
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50
source/gui/widgets/listbox.cpp
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@ -943,7 +943,7 @@ namespace nana
catobj.items.clear();
catobj.sorted.clear();
}
/// clear all items in all cat, but not the container of cat self.
void clear()
{
for(auto & m : list_)
@ -1677,7 +1677,18 @@ namespace nana
///Translate relative position (position in display) into absolute position (original data order)
size_type absolute(const index_pair& display_pos) const
{
return (sorted_index_ == npos ? display_pos.item : _m_at(display_pos.cat)->sorted[display_pos.item]);
if(sorted_index_ == npos)
return display_pos.item ;
auto & catobj = *_m_at(display_pos.cat);
if(catobj.items.size()==0)
if (display_pos == index_pair{0,0} )
return 0;
else
return npos;
return catobj.sorted[display_pos.item] ;
}
index_pair absolute_pair(const index_pair& display_pos) const
{
@ -1687,7 +1698,8 @@ namespace nana
///Translate absolute position (original data order) into relative position (position in display)
size_type relative(const index_pair& pos) const
{
if (sorted_index_ == npos) return pos.item ;
if (sorted_index_ == npos)
return pos.item ;
auto & catobj = *_m_at(pos.cat);
@ -1695,6 +1707,10 @@ namespace nana
if (pos.item == catobj.sorted[i])
return i;
if (pos == index_pair{0,0} )
if(catobj.items.size()==0)
return 0;
return npos ;
}
index_pair relative_pair(const index_pair& pos) const
@ -1934,7 +1950,12 @@ namespace nana
else if(number)
scroll.offset_y_abs.item = number - 1;
else
{
scroll.offset_y_abs.item = (pos_abs.cat > 0 ? npos : 0);
scroll.offset_y_dpl = scroll.offset_y_abs ;
return ;
}
scroll_y_dpl_refresh() ;
}
void scroll_y_rel(const index_pair& pos_rel)
{
@ -4025,12 +4046,13 @@ namespace nana
{
auto & ess = _m_ess();
ess.lister.clear(cat);
auto pos = ess.scroll_y_dpl();
if(pos.cat == cat)
{
pos.item = (pos.cat > 0 ? npos : 0);
ess.set_scroll_y_dpl(pos);
}
//unsort(); // ??
// from current display position
// move to the cat self if not in first cat
// move to first item ?? if in first cat
ess.scroll_y_abs(ess.scroll_y_abs());
ess.update();
}
@ -4038,9 +4060,13 @@ namespace nana
{
auto & ess = _m_ess();
ess.lister.clear();
auto pos = ess.scroll_y_dpl();
pos.item = (pos.cat > 0 ? npos : 0);
ess.set_scroll_y_dpl(pos);
unsort(); // apperar to be espected
// from current display position
// move to the cat self if not in first cat
// move to first item ?? if in first cat
ess.scroll_y_abs(ess.scroll_y_abs());
ess.update();
}