static Optional<TextChange> handle_command_key(const KeyPress& key,
ObjText* obj)
{
auto toggler = [obj](const BoolSetting& setting, const utf8_string& name){
auto setter = [obj](const auto& setting, const auto& value){
return [obj, setting, value](){
return obj->Set(setting, value);
};
};
auto value = obj->GetSettings().Get(setting);
return TextChange(setter(setting, !value), setter(setting, value),
value ? "Clear " + name : "Set " + name);
};
if (key.Is(Ctrl, key::B)){
return option(toggler(ts_FontBold, "bold"));
}
else if (key.Is(Ctrl, key::I)){
return option(toggler(ts_FontItalic, "italic"));
}
return no_option();
}
inline bool is_exit_key(const KeyPress& key){
return key.Is(Ctrl, key::enter) ||
key.Is(key::esc);
}