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fix listbox multi-selection exception(#154)

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This commit is contained in:
Jinhao 2016-09-14 05:51:23 +08:00
parent 318f0ec570
commit cff816f10b
1 changed files with 43 additions and 15 deletions
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58
source/gui/widgets/listbox.cpp
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@ -1490,10 +1490,15 @@ namespace nana
void select_display_range(index_pair fr_abs, index_pair to_dpl, bool sel)
{
const auto already_selected = this->pick_items(true);
index_pair fr_dpl (fr_abs.cat, this->display_order(fr_abs.cat, fr_abs.item));
if (fr_dpl > to_dpl)
std::swap(fr_dpl, to_dpl);
const auto begin = fr_dpl;
const auto last = to_dpl;
for (; fr_dpl != to_dpl; forward(fr_dpl, 1, fr_dpl))
{
if (fr_dpl.is_item())
@ -1502,6 +1507,14 @@ namespace nana
if (to_dpl.is_item())
item_proxy(ess_, index_pair(to_dpl.cat, absolute( to_dpl ) )).select(sel);
//Unselects the already selected which is out of range [begin, last]
for (auto index : already_selected)
{
index_pair disp_order{ index.cat, this->display_order(index.cat, index.item) };
if (begin > disp_order || disp_order > last)
item_proxy(ess_, index_pair(index.cat, absolute(disp_order))).select(false);
}
}
bool select_for_all(bool sel)
@ -2060,7 +2073,7 @@ namespace nana
return i;
}
public:
index_pair last_selected_abs, last_selected_dpl;
index_pair last_selected_abs;
private:
essence * ess_{nullptr};
nana::listbox * widget_{nullptr};
@ -3126,7 +3139,7 @@ namespace nana
void es_lister::move_select(bool upwards, bool unselect_previous, bool trace_selected)
{
auto next_selected_dpl = relative_pair ( last_selected_abs); // last_selected_dpl; // ??
auto next_selected_dpl = relative_pair ( last_selected_abs);
if (next_selected_dpl.empty()) // has no cat ? (cat == npos) => beging from first cat
{
bool good = false;
@ -3247,7 +3260,7 @@ namespace nana
if (it.selected() != sel)
it.select(sel);
}
last_selected_abs = last_selected_dpl = index_pair{cat, npos};
last_selected_abs = index_pair{cat, npos};
}
class drawer_header_impl
@ -4165,7 +4178,18 @@ namespace nana
if (!lister.single_selection())
{
if (arg.shift)
lister.select_display_range(lister.last_selected_abs , item_pos, sel);
{
//Set the first item as the begin of selected item if there
//is not a last selected item.(#154 reported by RenaudAlpes)
if (lister.last_selected_abs.empty() || lister.last_selected_abs.is_category())
lister.last_selected_abs.set_both(0);
auto before = lister.last_selected_abs;
lister.select_display_range(lister.last_selected_abs, item_pos, sel);
lister.last_selected_abs = before;
}
else if (arg.ctrl)
sel = !item_proxy(essence_, abs_item_pos).selected();
else
@ -4181,19 +4205,22 @@ namespace nana
if(item_ptr)
{
item_ptr->flags.selected = sel;
arg_listbox arg{ item_proxy{ essence_, abs_item_pos } };
lister.wd_ptr()->events().selected.emit(arg, lister.wd_ptr()->handle());
if (item_ptr->flags.selected)
if (item_ptr->flags.selected != sel)
{
lister.cancel_others_if_single_enabled(true, abs_item_pos);
essence_->lister.last_selected_abs = abs_item_pos;
item_ptr->flags.selected = sel;
arg_listbox arg{ item_proxy{ essence_, abs_item_pos } };
lister.wd_ptr()->events().selected.emit(arg, lister.wd_ptr()->handle());
if (item_ptr->flags.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 == abs_item_pos)
essence_->lister.last_selected_abs.set_both(npos);
}
else if (essence_->lister.last_selected_abs == abs_item_pos)
essence_->lister.last_selected_abs.set_both(npos);
}
else if(!lister.single_selection())
lister.categ_selected(item_pos.cat, true);
@ -4772,10 +4799,11 @@ namespace nana
for (item_proxy &it : *this )
it.select(sel);
ess_->lister.last_selected_abs = ess_->lister.last_selected_dpl = index_pair {this->pos_, npos};
ess_->lister.last_selected_abs = index_pair {this->pos_, npos};
return *this;
}
bool cat_proxy::selected() const
{
for (item_proxy &it : *this )