+ // XXX: we also will need a layer_id to layer map, perhaps
+ // make this the primary map, and the surface_id->layer a
+ // secondary map.
+
+ storage_type mapping; // map surface_id to layer
+ layers_type layers; // the actual layer IDs we have
+ int main_surface;
+ std::string main_surface_name;
+ role_to_layer_map roles;
+ addsurf_layer_map surfaces; // additional surfaces on layers
+
+ optional<int> get_layer_id(int surface_id);
+ optional<int> get_layer_id(std::string const &role);
+ optional<struct LayoutState*> get_layout_state(int surface_id) {
+ int layer_id = *this->get_layer_id(surface_id);
+ auto i = this->mapping.find(layer_id);
+ return i == this->mapping.end()
+ ? nullopt
+ : optional<struct LayoutState *>(&i->second.state);
+ }
+ optional<struct layer> get_layer(int layer_id) {
+ auto i = this->mapping.find(layer_id);
+ return i == this->mapping.end() ? nullopt
+ : optional<struct layer>(i->second);
+ }