void List::init()
{
+ input_type = INPUT_NAVIGATION;
+
item_factory = 0;
sel_index = -1;
+ focus_index = -1;
first = 0;
max_scroll = 0;
view_size = 5;
List::Item *List::create_item(unsigned index)
{
- Item *item = 0;
+ Item *item = 0;
if(item_factory)
item = item_factory->create_item(index);
else
item = new BasicItem(data->get_string(index));
+ if(static_cast<int>(index)==sel_index)
+ item->set_active(true);
add(*item);
item->autosize();
item->signal_autosize_changed.connect(sigc::bind(sigc::mem_fun(this, &List::item_autosize_changed), item));
if(i>=static_cast<int>(data->size()))
throw out_of_range("List::set_selected_index");
- if(i==sel_index)
+ if(i==sel_index || (i<0 && sel_index<0))
return;
if(sel_index>=0)
items[sel_index]->set_active(false);
if(i<0)
+ {
sel_index = -1;
+ focus_index = -1;
+ set_input_focus(0);
+ signal_selection_cleared.emit();
+ }
else
{
sel_index = i;
+ focus_index = i;
items[sel_index]->set_active(true);
+ if(state&FOCUS)
+ set_input_focus(items[focus_index]);
signal_item_selected.emit(sel_index);
}
}
void List::button_press(int x, int y, unsigned btn)
{
- Container::button_press(x, y, btn);
- if(click_focus && btn==1)
+ if(btn==4 || btn==5)
{
- for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
- if(click_focus==items[i])
- {
- set_selected_index(i);
- break;
- }
+ unsigned change = 3;
+ if(btn==4)
+ {
+ change = min(first, change);
+ slider.set_value(max_scroll-(first-change));
+ }
+ else if(btn==5)
+ {
+ change = min(max_scroll-first, change);
+ slider.set_value(max_scroll-(first+change));
+ }
+ }
+ else
+ {
+ Container::button_press(x, y, btn);
+ if(click_focus && btn==1)
+ {
+ for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
+ if(click_focus==items[i])
+ {
+ set_selected_index(i);
+ break;
+ }
+ }
+ }
+}
+
+void List::focus_in()
+{
+ if(focus_index>=0 && items[focus_index]->is_visible())
+ set_input_focus(items[focus_index]);
+ else
+ {
+ if(sel_index>=0 && items[sel_index]->is_visible())
+ set_focus_index(sel_index);
+ else if(!items.empty())
+ set_focus_index(first);
+ }
+}
+
+bool List::navigate(Navigation nav)
+{
+ if(nav==NAV_UP && !items.empty())
+ {
+ if(focus_index>0)
+ set_focus_index(focus_index-1);
+ }
+ else if(nav==NAV_DOWN && !items.empty())
+ {
+ if(static_cast<unsigned>(focus_index+1)<items.size())
+ set_focus_index(focus_index+1);
+ }
+ else if(nav==NAV_ACTIVATE)
+ set_selected_index(focus_index);
+ else
+ return false;
+
+ return true;
+}
+
+void List::set_focus_index(int i)
+{
+ focus_index = i;
+ if(focus_index>=0)
+ {
+ scroll_to_focus();
+ if(state&FOCUS)
+ set_input_focus(items[focus_index]);
}
}
rebuild();
}
-void List::check_view_range()
+unsigned List::last_to_first(unsigned last) const
{
if(!style)
- return;
+ return last;
- unsigned h = geom.h;
+ unsigned view_h = geom.h;
if(const Part *items_part = style->get_part("items"))
{
const Sides &margin = items_part->get_margin();
- h -= margin.top+margin.bottom;
+ view_h -= margin.top+margin.bottom;
}
- max_scroll = items.size();
- for(unsigned i=items.size(); i-->0; )
+ unsigned items_h = 0;
+ for(unsigned i=last; i<items.size(); --i)
{
- unsigned ih = items[i]->get_geometry().h;
- if(ih<=h)
- {
- h -= ih;
- --max_scroll;
- }
+ items_h += items[i]->get_geometry().h;
+ if(items_h>view_h)
+ return min(i+1, last);
}
+ return 0;
+}
+
+void List::check_view_range()
+{
+ if(!style)
+ return;
+
+ if(items.empty())
+ max_scroll = 0;
+ else
+ max_scroll = last_to_first(items.size()-1);
+
if(first>max_scroll)
first = max_scroll;
slider.set_value(max_scroll-first);
}
+void List::scroll_to_focus()
+{
+ if(focus_index<0 || items[focus_index]->is_visible())
+ return;
+
+ if(static_cast<unsigned>(focus_index)<first)
+ slider.set_value(max_scroll-focus_index);
+ else
+ slider.set_value(max_scroll-last_to_first(focus_index));
+}
+
void List::slider_value_changed(double value)
{
if(max_scroll>0 && !ignore_slider_change)
}
}
+void List::adjust_index(int &index, int pos, int change)
+{
+ if(index>pos)
+ index += change;
+ else if(index==pos)
+ index = (change>0 ? index+change : -1);
+}
+
List::DataObserver::DataObserver(List &l):
list(l)
void List::DataObserver::item_added(unsigned i)
{
- if(list.sel_index>=static_cast<int>(i))
- ++list.sel_index;
+ adjust_index(list.sel_index, i, 1);
+ adjust_index(list.focus_index, i, 1);
Item *item = list.create_item(i);
list.items.insert(list.items.begin()+i, item);
void List::DataObserver::item_removed(unsigned i)
{
- if(list.sel_index>static_cast<int>(i))
- --list.sel_index;
- else if(list.sel_index==static_cast<int>(i))
- list.sel_index = -1;
+ bool had_selection = (list.sel_index>=0);
+ adjust_index(list.sel_index, i, -1);
+ adjust_index(list.focus_index, i, -1);
delete list.items[i];
list.items.erase(list.items.begin()+i);
list.items_changed();
+
+ if(had_selection && list.sel_index<0)
+ list.signal_selection_cleared.emit();
}
void List::DataObserver::cleared()
{
list.sel_index = -1;
+ list.focus_index = -1;
for(vector<Item *>::iterator i=list.items.begin(); i!=list.items.end(); ++i)
delete *i;
list.items.clear();
list.items_changed();
+
+ list.signal_selection_cleared.emit();
}
void List::DataObserver::refresh_item(unsigned i)
if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
mci->set_widths(self_widths);
}
- else
- set_widths(self_widths);
+
+ set_widths(self_widths);
}
projects / libs / gltk.git / blobdiff