input callback fix + added focused property

src/logic/scripting/lua/libgui.cpp

@@ -252,6 +252,9 @@ static int p_is_enabled(UINode* node) {
 static int p_move_into(UINode*) {
     return state->pushcfunction(l_uinode_move_into);
 }
+static int p_get_focused(UINode* node) {
+    return state->pushboolean(node->isFocused());
+}
 
 static int l_gui_getattr(lua_State* L) {
     auto docname = lua_tostring(L, 1);
@@ -287,6 +290,7 @@ static int l_gui_getattr(lua_State* L) {
         {"back", p_get_back},
         {"reset", p_get_reset},
         {"inventory", p_get_inventory},
+        {"focused", p_get_focused},
     };
     auto func = getters.find(attr);
     if (func != getters.end()) {
@@ -390,6 +394,13 @@ static void p_set_inventory(UINode* node, int idx) {
         }
     }
 }
+static void p_set_focused(std::shared_ptr<UINode> node, int idx) {
+    if (state->toboolean(idx) && !node->isFocused()) {
+        scripting::engine->getGUI()->setFocus(node);
+    } else if (node->isFocused()){
+        node->defocus();
+    }
+}
 
 static int l_gui_setattr(lua_State* L) {
     auto docname = lua_tostring(L, 1);
@@ -425,6 +436,13 @@ static int l_gui_setattr(lua_State* L) {
     if (func != setters.end()) {
         func->second(node.get(), 4);
     }
+    static const std::unordered_map<std::string_view, std::function<void(std::shared_ptr<UINode>,int)>> setters2 {
+        {"focused", p_set_focused},
+    };
+    auto func2 = setters2.find(attr);
+    if (func2 != setters2.end()) {
+        func2->second(node, 4);
+    }
     return 0;
 }