#include <gtk/gtk.h> enum { PROP_LABEL = 1, PROP_ID, LAST_PROPERTY }; static GParamSpec *properties[LAST_PROPERTY] = { NULL, }; typedef struct { GObject parent; char *label; int id; } MyObject; typedef struct { GObjectClass parent_class; } MyObjectClass; static GType my_object_get_type (void); G_DEFINE_TYPE (MyObject, my_object, G_TYPE_OBJECT) static void my_object_init (MyObject *obj) { } static void my_object_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec) { MyObject *obj = (MyObject *)object; switch (property_id) { case PROP_LABEL: g_value_set_string (value, obj->label); break; case PROP_ID: g_value_set_int (value, obj->id); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void my_object_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) { MyObject *obj = (MyObject *)object; switch (property_id) { case PROP_LABEL: g_free (obj->label); obj->label = g_value_dup_string (value); break; case PROP_ID: obj->id = g_value_get_int (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void my_object_finalize (GObject *obj) { MyObject *object = (MyObject *)obj; g_free (object->label); G_OBJECT_CLASS (my_object_parent_class)->finalize (obj); } static void my_object_class_init (MyObjectClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); object_class->get_property = my_object_get_property; object_class->set_property = my_object_set_property; object_class->finalize = my_object_finalize; properties[PROP_LABEL] = g_param_spec_string ("label", "label", "label", NULL, G_PARAM_READWRITE); properties[PROP_ID] = g_param_spec_int ("id", "id", "id", 0, G_MAXINT, 0, G_PARAM_READWRITE); g_object_class_install_properties (object_class, LAST_PROPERTY, properties); } static GtkWidget * create_widget (gpointer item, gpointer user_data) { MyObject *obj = (MyObject *)item; GtkWidget *label; label = gtk_label_new (""); g_object_bind_property (obj, "label", label, "label", G_BINDING_SYNC_CREATE); return label; } static int compare_items (gconstpointer a, gconstpointer b, gpointer data) { int id_a, id_b; g_object_get ((gpointer)a, "id", &id_a, NULL); g_object_get ((gpointer)b, "id", &id_b, NULL); return id_a - id_b; } static void add_some (GtkButton *button, GListStore *store) { int n, i; guint n_items; GObject *obj; char *label; for (n = 0; n < 50; n++) { n_items = g_list_model_get_n_items (G_LIST_MODEL (store)); i = g_random_int_range (0, MAX (2 * n_items, 1)); label = g_strdup_printf ("Added %d", i); obj = g_object_new (my_object_get_type (), "id", i, "label", label, NULL); g_list_store_insert_sorted (store, obj, compare_items, NULL); g_object_unref (obj); g_free (label); } } static void remove_some (GtkButton *button, GListStore *store) { int n, i; guint n_items; for (n = 0; n < 50; n++) { n_items = g_list_model_get_n_items (G_LIST_MODEL (store)); if (n_items == 0) return; i = g_random_int_range (0, n_items); g_list_store_remove (store, i); } } int main (int argc, char *argv[]) { GtkWidget *window, *grid, *sw, *box, *button; GListStore *store; int i; gtk_init (); store = g_list_store_new (my_object_get_type ()); for (i = 0; i < 100; i++) { MyObject *obj; char *label; label = g_strdup_printf ("item %d", i); obj = g_object_new (my_object_get_type (), "id", i, "label", label, NULL); g_list_store_append (store, obj); g_free (label); g_object_unref (obj); } window = gtk_window_new (); grid = gtk_grid_new (); gtk_window_set_child (GTK_WINDOW (window), grid); sw = gtk_scrolled_window_new (); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_widget_set_hexpand (sw, TRUE); gtk_widget_set_vexpand (sw, TRUE); gtk_grid_attach (GTK_GRID (grid), sw, 0, 0, 1, 1); box = gtk_list_box_new (); gtk_list_box_bind_model (GTK_LIST_BOX (box), G_LIST_MODEL (store), create_widget, NULL, NULL); gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), box); sw = gtk_scrolled_window_new (); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_widget_set_hexpand (sw, TRUE); gtk_widget_set_vexpand (sw, TRUE); gtk_grid_attach (GTK_GRID (grid), sw, 1, 0, 1, 1); box = gtk_flow_box_new (); gtk_flow_box_bind_model (GTK_FLOW_BOX (box), G_LIST_MODEL (store), create_widget, NULL, NULL); gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), box); button = gtk_button_new_with_label ("Add some"); g_signal_connect (button, "clicked", G_CALLBACK (add_some), store); gtk_grid_attach (GTK_GRID (grid), button, 0, 1, 1, 1); button = gtk_button_new_with_label ("Remove some"); g_signal_connect (button, "clicked", G_CALLBACK (remove_some), store); gtk_grid_attach (GTK_GRID (grid), button, 0, 2, 1, 1); gtk_widget_show (window); while (TRUE) g_main_context_iteration (NULL, TRUE); return 0; }