Whole list but not tree

main.c

@@ -78,12 +78,17 @@ GListModel* get_children_model (struct TreeNode_t *parent)
     GtkStringList *list = gtk_string_list_new(NULL);
     
     if (parent) {
+        printf("[get_children_model] here is %s content : ", parent->text);
+
         child = parent->child;
         while(child) {
              gtk_string_list_append(list, child->text);
+             printf("%s ", child->text);
              child = child->next;
         }
     }
+    printf("\n");
+
     return G_LIST_MODEL(list);
 }
 
@@ -93,30 +98,47 @@ GListModel* create_model_func(GObject *item, gpointer user_data)
     struct TreeNode_t *cur = root;
     gchar *string =  gtk_string_object_get_string(GTK_STRING_OBJECT(item));
     
-    if (strcmp(string, "Child 1")) {
+    if (strcmp(string, "Root") == NULL) {
+        cur = root;
+    }
+    else if (strcmp(string, "Child 1") == NULL) {
         cur = root->child;
     }
-    else if (strcmp(string, "Child 2")) {
+    else if (strcmp(string, "Child 2") == NULL) {
         cur = root->child->next;
     } else {
         cur = NULL;
     }
 
+    printf("[create_model_func] here is %s item\n", string);
+
     return get_children_model(cur);
 }
 
 void setup_factory (GtkListItemFactory *factory, GtkListItem *list_item, gpointer user_data)
 {
-        GtkWidget *label = gtk_label_new(NULL);
+    GtkWidget* expander = gtk_expander_new (NULL);
-        gtk_list_item_set_child(list_item, label);
+    gtk_list_item_set_child (list_item, expander);
+    printf("[setup_factory] here is an expander\n");
 }
 
 void bind_factory (GtkListItemFactory *factory, GtkListItem *list_item, gpointer user_data)
 {
-        GObject *item = gtk_list_item_get_item(list_item);
+    GObject *item;
-        const gchar *text = gtk_string_object_get_string(GTK_STRING_OBJECT(item));
+    const gchar *text;
-        GtkWidget *label = gtk_list_item_get_child(list_item);
+    GtkTreeListRow *row = gtk_list_item_get_item(list_item);
-        gtk_label_set_text(GTK_LABEL(label), text);
+
+    if (row != NULL) {
+        gboolean is_expanded = gtk_tree_list_row_get_expanded(row);
+        text = gtk_string_object_get_string(GTK_STRING_OBJECT(gtk_tree_list_row_get_item(row)));
+        GtkWidget *expander = gtk_list_item_get_child(list_item);
+        gtk_expander_set_label(GTK_EXPANDER(expander), text);
+        printf("[bind_factory] here is %s content\n", text);
+        gtk_tree_list_row_set_expanded(row, !is_expanded);
+        //g_object_unref(row); // Decrease the reference count when done
+    } else {
+        printf("[bind_factory] here is NON %s content\n", text);
+    }
 }
 
 // Application activation callback
@@ -129,24 +151,28 @@ void app_activate (GApplication *app, gpointer user_data)
     GtkStringList *model = gtk_string_list_new(NULL);
     gtk_string_list_append(model, root->text);
 
-    // Create a GtkTreeListModel
-    GtkTreeListModel *tree_model = gtk_tree_list_model_new(
-        G_LIST_MODEL(model),
-        TRUE, // Passthrough - False in actual usage with dynamic children retrieval
-        TRUE, // autoexpand
-        (GtkTreeListModelCreateModelFunc)create_model_func,
-        NULL,
-        NULL  //(GDestroyNotify)free_tree_node
-    );
-
     // Create and setup the list view and item factory
     GtkListItemFactory *factory = gtk_signal_list_item_factory_new ();
     g_signal_connect (factory, "setup", G_CALLBACK(setup_factory), NULL);
     g_signal_connect (factory, "bind", G_CALLBACK(bind_factory), NULL);
 
-    GtkWidget *list_view = gtk_list_view_new(GTK_SELECTION_MODEL(gtk_no_selection_new(tree_model)), factory);
+    // Create a GtkTreeListModel
+    GtkTreeListModel *tree_model = gtk_tree_list_model_new(
+        G_LIST_MODEL(model),
+        FALSE, // Passthrough - False in actual usage with dynamic children retrieval
+        FALSE, // autoexpand
+        (GtkTreeListModelCreateModelFunc)create_model_func,
+        NULL,
+        NULL //(GDestroyNotify)free_tree_node
+    );
+
+    GtkNoSelection *selection_model = gtk_no_selection_new (
+                                            G_LIST_MODEL (tree_model));
+
+    GtkWidget *list_view = gtk_list_view_new (selection_model, factory);
 
     gtk_window_set_child(GTK_WINDOW(window), list_view);
+
     gtk_widget_set_visible(window, TRUE);
 }