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FIX: crash in page down and home of a listbox with categories, trying to create an item_proxy {cat, npos} and select it

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This commit is contained in:
qPCR4vir 2015-05-05 13:59:59 +02:00
parent d4d1a79af8
commit 7863dcdba6
1 changed files with 31 additions and 17 deletions
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26
source/gui/widgets/listbox.cpp
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@ -3378,21 +3378,35 @@ namespace nana
if (! scrl.make_page_scroll(!up))
return;
essence_->lister.select_for_all(false);
if (up)
item_proxy {essence_, essence_->scroll_y_abs()}.select(true);
else
{
index_pair idx{essence_->scroll_y_dpl()};
if (!up)
essence_->lister.forward(idx, scrl.range()-1, idx);
if (idx.is_item())
item_proxy::from_display(essence_, idx).select(true);
}
else
if(!essence_->lister.single_selection())
essence_->lister.categ_selected(idx.cat, true);
essence_->trace_last_selected_item ();
break;
}
case keyboard::os_home:
{
essence_->lister.select_for_all(false);
item_proxy::from_display(essence_, {0,0}).select(true);
index_pair frst{essence_->lister.first()};
if (frst.is_item())
item_proxy::from_display(essence_, frst).select(true);
else
if(!essence_->lister.single_selection())
essence_->lister.categ_selected(frst.cat, true);
essence_->trace_last_selected_item ();
break;
}
case keyboard::os_end:
essence_->lister.select_for_all(false);
item_proxy::from_display(essence_, essence_->lister.last()).select(true);