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WIP: unbind_cb() and teardown_cb() seems to have no effect. Why ?

This commit is contained in:
Jean Sirmai 2024-01-23 12:10:37 +01:00
parent 8094259bb2
commit a54454556a
Signed by: jean
GPG Key ID: FB3115C340E057E3
1 changed files with 27 additions and 8 deletions
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33
src/ui/sand_box.c
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@ -45,15 +45,20 @@ static void bind_cb (GtkSignalListItemFactory *self, GtkListItem *my_list_item,
gtk_label_set_text (GTK_LABEL (my_label), gtk_string_object_get_string (my_string_object));
}
static void on_selection_change (GtkSelectionModel* self, guint position, guint n_items, gpointer user_data)
static void unbind_cb (GtkSignalListItemFactory *self, GtkListItem *listitem, GtkSelectionModel *my_selection_model)
{printf("list size = %d\n", g_list_model_get_n_items (my_selection_model));}
static void teardown_cb (GtkSignalListItemFactory *self, GtkListItem *listitem, gpointer user_data) {}
/* GtkListItem instance will be destroyed soon. You don't need to set the child to NULL. */
static void on_selection_change (GtkSelectionModel* my_selection_model, guint position, guint n_items, gpointer user_data)
{
printf("list size = %d item type = %d\
position (premier élement ayant changé d'état) = %2d %7s\
nombre d'éléments ayant changé d'état = %2d\n",
g_list_model_get_n_items (self),
g_list_model_get_item_type(self),
g_list_model_get_n_items (my_selection_model),
g_list_model_get_item_type(my_selection_model),
position,
gtk_string_object_get_string(g_list_model_get_item(self, position)),
gtk_string_object_get_string(g_list_model_get_item(my_selection_model, position)),
n_items );
}
@ -74,7 +79,15 @@ static void and_now_let_s_climb_that_tree (GtkWidget *in_that_box)
GtkListItemFactory *my_factory = gtk_signal_list_item_factory_new ();
g_signal_connect (my_factory, "setup", G_CALLBACK (setup_cb), NULL);
g_signal_connect (my_factory, "bind", G_CALLBACK (bind_cb), NULL);
g_signal_connect (my_selection_model, "selection-changed", G_CALLBACK (on_selection_change), NULL);
if (0) g_signal_connect (my_selection_model, "selection-changed", G_CALLBACK (on_selection_change), NULL);
g_signal_connect (my_factory, "unbind", G_CALLBACK (unbind_cb), my_selection_model);
g_signal_connect (my_factory, "teardown", G_CALLBACK (teardown_cb), NULL);
/* GtkWidget *treeview; */
/* treeview = gtk_tree_view_new_with_model (my_selection_model); */
/* gtk_widget_set_vexpand (treeview, TRUE); */
/* gtk_tree_view_set_search_column (GTK_TREE_VIEW (treeview), */
/* COLUMN_DESCRIPTION); */
GtkWidget *my_list_view = gtk_list_view_new (GTK_SELECTION_MODEL (my_selection_model), my_factory);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (in_that_box), my_list_view);
@ -96,10 +109,16 @@ void on_activate_window_creation (GtkApplication *app, gpointer data) {
if (data) {g_print (data); g_print (" and is displayed by [sand_box.c / on_activate_window_creation()]\n");}
}
//-------------------------------------------------------------------- notes
//----------------------------------------------------------------| mes notes.
// guix shell -m manifest.scm && pkg-config --libs gtk4 make clean && clear && time make run
// my local widgets examples are in user/jean/01/GTK4/tree (learning)/The_Gnome_way/demos/gtk-demo
//
// tout ce qui commence par gtk... est un widget ex: "my_selection_model" est un widget ??
// factory = GtkSignalListItemFactory(setup_cb, bind_cb) <<<
// gtk_widget_set_visible(...) <<<
//
// GtkColumnView
//
// https://toshiocp.github.io/Gtk4-tutorial/sec29.html
// factory = GtkSignalListItemFactory(setup_cb, bind_cb)