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fix listbox enable_single crash(#121)

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This commit is contained in:
Jinhao 2016-03-23 15:33:30 +08:00
parent 46d06d3ee6
commit c0e4a16880
1 changed files with 16 additions and 11 deletions
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27
source/gui/widgets/listbox.cpp
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@ -3435,6 +3435,9 @@ namespace nana
if (lister.forward(essence_->scroll.offset_y_dpl, ptr_where.second, item_pos))
{
auto * item_ptr = (item_pos.is_item() ? &lister.at(item_pos) : nullptr);
const index_pair abs_item_pos{ item_pos.cat, lister.absolute(item_pos) };
if(ptr_where.first == parts::lister)
{
bool sel = true;
@ -3443,28 +3446,32 @@ namespace nana
if (arg.shift)
lister.select_display_range(lister.last_selected_abs , item_pos, sel);
else if (arg.ctrl)
sel = !item_proxy(essence_, index_pair (item_pos.cat, lister.absolute(item_pos))).selected();
sel = !item_proxy(essence_, abs_item_pos).selected();
else
lister.select_for_all(false); //cancel all selections
}
else
sel = !item_proxy(essence_, index_pair (item_pos.cat, lister.absolute(item_pos))).selected();
{
//Clicking on a category is ignored when single selection is enabled.
//Fixed by Greentwip(issue #121)
if (item_ptr)
sel = !item_proxy(essence_, abs_item_pos).selected();
}
if(item_ptr)
{
item_ptr->flags.selected = sel;
index_pair last_selected(item_pos.cat, lister.absolute(item_pos));
arg_listbox arg{item_proxy{essence_, last_selected}, sel};
arg_listbox arg{ item_proxy{ essence_, abs_item_pos }, sel };
lister.wd_ptr()->events().selected.emit(arg);
if (item_ptr->flags.selected)
{
lister.cancel_others_if_single_enabled(true, last_selected);
essence_->lister.last_selected_abs = last_selected;
lister.cancel_others_if_single_enabled(true, abs_item_pos);
essence_->lister.last_selected_abs = abs_item_pos;
}
else if (essence_->lister.last_selected_abs == last_selected)
else if (essence_->lister.last_selected_abs == abs_item_pos)
essence_->lister.last_selected_abs.set_both(npos);
}
else if(!lister.single_selection())
@ -3475,13 +3482,11 @@ namespace nana
if(item_ptr)
{
item_ptr->flags.checked = ! item_ptr->flags.checked;
index_pair abs_pos{ item_pos.cat, lister.absolute(item_pos) };
arg_listbox arg{ item_proxy{ essence_, abs_pos }, item_ptr->flags.checked };
arg_listbox arg{ item_proxy{ essence_, abs_item_pos }, item_ptr->flags.checked };
lister.wd_ptr()->events().checked.emit(arg);
if (item_ptr->flags.checked)
lister.cancel_others_if_single_enabled(false, abs_pos);
lister.cancel_others_if_single_enabled(false, abs_item_pos);
}
else if (! lister.single_check())
lister.categ_checked_reverse(item_pos.cat);