A C T I O N S A C T I O N S A C T I O N S

(notes)

@@ -1,3 +1,8 @@
+https://developer.gnome.org/hig/principles.html
+
+  // https://docs.gtk.org/gio/class.MenuModel.html
+  // https://www.geany.org/manual/gtk/gobject/index.html
+  // https://developer.gnome.org/hig/patterns/controls/menus.html
 
 
 

include/actions.h

@@ -0,0 +1,10 @@
+// https://docs.gtk.org/gio/class.MenuItem.html
+// https://docs.gtk.org/gio/ctor.MenuItem.new.html
+//
+// https://docs.gtk.org/gio/class.SimpleAction.html
+// https://docs.gtk.org/gio/ctor.SimpleAction.new.html
+//
+// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/include/ui.h
+// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/src/ui/events.c
+// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/src/ui/application.c
+

include/calls.h

@@ -47,11 +47,19 @@ void on_SAVE_CURRENT_MODEL_BEFORE_EDITING (GtkWidget *btt_SAVE_CURRENT_MODEL, gp
 void on_DISCARD_CURRENT_MODEL_AND_START_EDITING (GtkWidget *btt_SAVE_CURRENT_MODEL, gpointer data);
 void on_WRITE_CURRENT_MODEL (GtkWidget *btt_WRITE_CURRENT_MODEL, gpointer data);
 
+
+void on_setup_user_menu_factory (GtkSignalListItemFactory *factory,
+                                 GObject* object, gpointer user_data);
+void on_bind_user_menu_factory (GtkSignalListItemFactory *factory,
+                                GObject* object, gpointer user_data);
+
+
 void on_setup_user_tree_factory (GtkSignalListItemFactory *factory,
                                  GObject* object, gpointer user_data);
 void on_bind_user_tree_factory (GtkSignalListItemFactory *factory,
                                 GObject* object, gpointer user_data);
 
+
 gboolean on_glarea_render (GtkGLArea *area, GdkGLContext *context);
 void on_glarea_realize (GtkWidget *widget);
 void on_glarea_unrealize (GtkWidget *widget);
@@ -63,8 +71,10 @@ void on_SITUATIONS_box_RESET_VALUE (GtkAdjustment *adjustment, gpointer data);
 void on_SITUATIONS_box_DO_RESET (GtkWidget *btt_reset, gpointer data);
 
 void on_clicked_HOME (GtkWidget *btt_reset, gpointer data);
-void on_clicked_MENU (GtkWidget *btt_reset, gpointer data);
-
+//void on_clicked_MENU_list_box (GtkWidget *btt_reset, gpointer data);
+//void on_clicked_MENU_pop (GtkWidget *btt_reset, gpointer data);
+void on_clicked_search (GtkWidget *btt_menu, gpointer list_box);
+void on_clicked_menu_experiment (GtkWidget *btt_menu, gpointer list_box);
 
 
 

include/widgets.h

@@ -35,27 +35,25 @@
 /*                                 W I N D O W S                              */
 /******************************************************************************/
 
-void head_set_MAIN_WINDOW (GtkApplication *app);
-void head_set_DIALOG_WINDOW (GtkApplication *app);
-void head_set_TEXT_WINDOW (GtkApplication *app);
+void widget_head_set_MAIN_WINDOW (GtkApplication *app);
+void widget_head_set_DIALOG_WINDOW (GtkApplication *app);
+void widget_head_set_TEXT_WINDOW (GtkApplication *app);
 
-void widget_MAIN_WINDOW_design (GtkWindow *main_window);
-void widget_DIALOG_WINDOW_design (GtkWindow *main_window,
+void widget_head_MAIN_WINDOW_design (GtkWindow *main_window);
+void widget_head_DIALOG_WINDOW_design (GtkWindow *main_window,
                                        GtkWindow *dialog_window);
-void widget_TEXT_WINDOW_design (GtkWindow *main_window,
+void widget_head_TEXT_WINDOW_design (GtkWindow *main_window,
                                      GtkWindow *text_window);
 
-GtkWindow *head_get_MAIN_WINDOW();
-GtkWindow *head_get_DIALOG_WINDOW();
-GtkWindow *head_get_TEXT_WINDOW();
+GtkWindow *widget_head_get_MAIN_WINDOW();
+GtkWindow *widget_head_get_DIALOG_WINDOW();
+GtkWindow *widget_head_get_TEXT_WINDOW();
 
 
 /******************************************************************************/
 /*                                 W I D G E T S                              */
 /******************************************************************************/
 
-GtkButton *get_GtkButton (char *btt_name);
-
 GtkWidget *get_STATE_page();
 GtkWidget *get_RULES_page();
 GtkWidget *get_STOCK_page();
@@ -63,6 +61,16 @@ GtkWidget *get_STOCK_page();
 GtkWidget *get_STOCK_text (gchar *text_name);
 
 
+/******************************************************************************/
+/*                                M E N U                                     */
+/******************************************************************************/
+
+struct MenuNode_t {gchar *text; struct MenuNode_t *child, *next;};
+struct MenuNode_t *create_user_menu_node (const gchar* text);
+
+GtkWidget *get_menu_anchor();
+
+
 /******************************************************************************/
 /*                                T R E E                                     */
 /******************************************************************************/
@@ -71,7 +79,7 @@ struct TreeNode_t {gchar *text; struct TreeNode_t *child, *next;};
 struct TreeNode_t *create_user_tree_node (const gchar* text);
 
 void add_child_node (struct TreeNode_t *parent, struct TreeNode_t *child);
-void let_us_create_a_complex_useless_and_expensive_tree (struct TreeNode_t *tree_root);
+void labo_let_us_create_a_complex_useless_and_expensive_tree (struct TreeNode_t *tree_root);
 
 GtkScrolledWindow *get_user_rules_tree ();
 
@@ -103,18 +111,5 @@ gchar *get_text_address_ANY ();
 /******************************************************************************/
 
 void learning_how_to_create_a_menu (GtkMenuButton* menu_button);
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+void labo_create_a_simple_gtk_string_list ();
 

src/actions.c

@@ -0,0 +1,79 @@
+//
+//
+//
+// https://docs.gtk.org/gio/class.MenuItem.html
+// https://docs.gtk.org/gio/ctor.MenuItem.new.html
+//
+// https://docs.gtk.org/gio/class.SimpleAction.html
+// https://docs.gtk.org/gio/ctor.SimpleAction.new.html
+//
+// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/include/ui.h
+/* static const GActionEntry app_actions [] = {
+    { "quit", on_quit_action, NULL, NULL, NULL },
+    { "about", on_about_action, NULL, NULL, NULL },
+    { "preferences", on_preferences_action, NULL, NULL, NULL },
+    .... }; */
+//
+// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/src/ui/events.c
+/* void on_about_action(GSimpleAction *action,
+                     GVariant *parameter,
+                     gpointer user_data)
+{
+    static const char *authors[] = {    "Adrien Bourmault (neox@a-lec.org)",
+                                        "Jean Sirmai (jean@a-lec.org)",
+                                        "Arthur Menges (arthur.menges@a-lec.org)",
+                                        NULL};
+    GemGraphClientApplication *self = user_data;
+    GtkWindow *window = NULL;
+
+    g_assert (GEM_GRAPH_CLIENT_IS_APPLICATION(self));
+
+    window = gtk_application_get_active_window(GTK_APPLICATION (self));
+
+    gtk_show_about_dialog(window,
+                         "program-name", "Gem-graph",
+                         "logo-icon-name", "application-x-executable",
+                         "authors", authors,
+                         "version", "0.1.0",
+                         "copyright", "Copyright © 2023 Libre en Communs",
+                         NULL);
+} */
+//
+// https://forge.a-lec.org/gem-graph/gem-graph-client/src/branch/devel/src/ui/application.c
+/* void ui_enable_action(const char *name) {
+    g_simple_action_set_enabled(
+    (GSimpleAction *)g_action_map_lookup_action(
+                            G_ACTION_MAP(application),
+                            name),
+    true);
+}
+
+void ui_disable_action(const char *name) {
+    g_simple_action_set_enabled(
+    (GSimpleAction *)g_action_map_lookup_action(
+                            G_ACTION_MAP(application),
+                            name),
+    false);
+}
+
+ *
+ *  Window actual presentation on screen
+ *
+ *
+static void gem_graph_client_application_activate(GApplication *app)
+{
+    GtkWindow *window;
+
+    g_assert(GEM_GRAPH_CLIENT_IS_APPLICATION(app));
+
+    window = gtk_application_get_active_window(GTK_APPLICATION (app));
+    if (window == NULL)
+    window = g_object_new(GEM_GRAPH_CLIENT_TYPE_WINDOW,
+                           "application", app,
+                           NULL);
+
+    ui_set_stack(HOME_MODE);
+
+    gtk_window_present(window);
+}
+*/

src/calls.c

@@ -64,14 +64,14 @@ static void on_auto_notification (const char *message)
 void on_windows_activation (GtkApplication *app,
                             gpointer no_user_data)
 {
-  head_set_MAIN_WINDOW (app);
-  widget_MAIN_WINDOW_design (head_get_MAIN_WINDOW());
+  widget_head_set_MAIN_WINDOW (app);
+  widget_head_MAIN_WINDOW_design (widget_head_get_MAIN_WINDOW());
 
-  head_set_DIALOG_WINDOW (app);
-  widget_DIALOG_WINDOW_design (head_get_MAIN_WINDOW(), head_get_DIALOG_WINDOW());
+  widget_head_set_DIALOG_WINDOW (app);
+  widget_head_DIALOG_WINDOW_design (widget_head_get_MAIN_WINDOW(), widget_head_get_DIALOG_WINDOW());
 
-  head_set_TEXT_WINDOW (app);
-  widget_TEXT_WINDOW_design (head_get_MAIN_WINDOW(), head_get_TEXT_WINDOW());
+  widget_head_set_TEXT_WINDOW (app);
+  widget_head_TEXT_WINDOW_design (widget_head_get_MAIN_WINDOW(), widget_head_get_TEXT_WINDOW());
 }
 
 
@@ -251,17 +251,17 @@ static void switch_STATE_RULES_DATA()
     switch (get_STATE_RULES_DATA()) {
 
     case (STATE) :
-      gtk_window_set_child (head_get_MAIN_WINDOW(),
+      gtk_window_set_child (widget_head_get_MAIN_WINDOW(),
                             GTK_WIDGET (get_STATE_page()));
       break;
 
     case (RULES) :
-      gtk_window_set_child (head_get_MAIN_WINDOW(),
+      gtk_window_set_child (widget_head_get_MAIN_WINDOW(),
                             GTK_WIDGET (get_RULES_page()));
       break;
 
     case (DATA)  :
-      gtk_window_set_child (head_get_MAIN_WINDOW(),
+      gtk_window_set_child (widget_head_get_MAIN_WINDOW(),
                             GTK_WIDGET (get_STOCK_page()));
       break;
 
@@ -284,7 +284,7 @@ void on_toggle_EXEC_EDIT (GtkWidget *toggled_button, gpointer user_data)
                               "text-editor-symbolic");
 
     //  https://docs.gtk.org/gtk4/class.Window.html    TODO   2024-06-30
-    //  gtk_window_present (GTK_WINDOW (head_get_DIALOG_WINDOW()));   //   works once only !
+    //  gtk_window_present (GTK_WINDOW (widget_head_get_DIALOG_WINDOW()));   //   works once only !
 
     set_EXEC_EDIT (EDIT);
   }
@@ -348,25 +348,146 @@ void on_SITUATIONS_box_DO_RESET (GtkWidget *btt_reset, gpointer data)
 /******************************************************************************/
 
 
-void on_clicked_MENU (GtkWidget *btt_reset, gpointer menu_button)
-{
-  printf ("callback.on_clicked_MENU() button\n");
-  // presents the text_window and works only once.\nIt should present a menu.\n");  //  TODO
-  learning_how_to_create_a_menu (menu_button);
-  gtk_window_present (GTK_WINDOW (head_get_TEXT_WINDOW()));
+void on_clicked_search (GtkWidget *btt_menu, gpointer list_box) {
+  // next line presents the text_window and works only once.\nIt should present a menu.\n");  //  TODO
+  gtk_window_present (GTK_WINDOW (widget_head_get_TEXT_WINDOW()));
 }
 
 void on_clicked_HOME (GtkWidget *btt_reset, gpointer data)
 {
   printf ("callback.on_clicked_HOME() button presents the dialog_window\
   ( :- )  but it works only once.\n");   //    TODO
-  gtk_window_present (GTK_WINDOW (head_get_DIALOG_WINDOW()));
+  gtk_window_present (GTK_WINDOW (widget_head_get_DIALOG_WINDOW()));
 }
 
 
 
 
-// GTK itself does not support event sounds,  <<  A GREAT WAY TO DEBUG !  TODO
-// you have to use a loadable module like the one that comes with libcanberra.
 
 
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+/******************************************************************************/
+/*                                M E N U                                     */
+/******************************************************************************/
+
+void on_clicked_menu_experiment (GtkWidget *btt_menu, gpointer list_box) {
+  printf ("callback.on_clicked_MENU() button  >  %p  < &list_box  >   children nb > 3\n", list_box);
+
+//  gpointer list_box = gtk_popover_get_child (GTK_POPOVER (pop));
+
+/*
+  if (gtk_list_box_get_row_at_index (list_box, 3))
+       printf ("callback.on_clicked_MENU() button  >  %p  < &list_box  >   children nb > 3\n", list_box);
+  else printf ("callback.on_clicked_MENU() button  >   in list_box are the three buttons :  %s, %s, %s\n\
+          and now : how to display these three buttons (and make use of them) ?   2024-07-13  (20h)\n",\
+          gtk_button_get_label (GTK_BUTTON (gtk_list_box_row_get_child (gtk_list_box_get_row_at_index (list_box, 0)))),
+          gtk_button_get_label (GTK_BUTTON (gtk_list_box_row_get_child (gtk_list_box_get_row_at_index (list_box, 1)))),
+          gtk_button_get_label (GTK_BUTTON (gtk_list_box_row_get_child (gtk_list_box_get_row_at_index (list_box, 2)))));
+
+  // learning_how_to_create_a_menu (menu_button);
+  // https://docs.gtk.org/gtk4/class.ListBox.html
+*/
+}
+
+
+
+
+
+
+
+
+
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+
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+
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+
+
+
+
+/******************************************************************************/
+/*                          M E N U   (from TREE)                             */
+/******************************************************************************/
+
+static void on_user_menu_expander_toggled (GtkExpander *expander,
+                                    gpointer user_data)
+{
+  GtkTreeListRow *row = GTK_TREE_LIST_ROW (user_data);
+  gboolean is_expanded = gtk_tree_list_row_get_expanded (row);
+  gtk_tree_list_row_set_expanded (row, ! is_expanded);
+  const gchar *text = gtk_string_object_get_string (
+                      GTK_STRING_OBJECT (gtk_tree_list_row_get_item (row)));
+  if (1) printf("[on_user_menu_expander_toggled]  >  %s\n", text);
+}
+
+
+void on_bind_user_menu_factory (GtkSignalListItemFactory *factory,
+                                GObject* object,
+                                gpointer user_data)
+{
+  GtkListItem *list_item = GTK_LIST_ITEM (object);
+  assert (list_item);
+
+  GtkTreeListRow *row = gtk_list_item_get_item (list_item);
+  assert (row); // if (row != NULL) {...}  do something ?  TODO  Check !
+
+  const gchar *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);
+  g_signal_handlers_disconnect_by_func (expander,
+                                        G_CALLBACK (on_user_menu_expander_toggled),
+                                        row);
+  g_signal_connect (expander,
+                    "activate",
+                    G_CALLBACK (on_user_menu_expander_toggled),
+                    row);
+  gtk_widget_set_margin_start (expander,
+                               gtk_tree_list_row_get_depth(row) * 20);
+}
+
+void on_setup_user_menu_factory (GtkSignalListItemFactory *factory,
+                                 GObject* object, gpointer user_data){
+    GtkWidget* expander = gtk_expander_new (NULL);
+    gtk_list_item_set_child (GTK_LIST_ITEM (object), expander);
+    if (0) printf("[on_setup_user_menu_factory] here is an expander\n");
+}
+

src/main.c

@@ -205,7 +205,7 @@
  *  Ces fonctions peuvent être énumérées selon leur source ou leur destination.
  *                     Il y a, en tout, à ce jour :
  *                     - (86) fonctions appelées (dont 6 data)
- *                     -  (m) fonctions appelantes
+ *                     -  (m) appels de fonction
  *                     -  (e) enum
  *                     -  (s) struct
  *                     -  (d) define
@@ -261,9 +261,9 @@
  *
  * Les autres fonctions appelées par les fonctions callback() sont :
  *
- * widget_MAIN_WINDOW_design()
- * widget_DIALOG_WINDOW_design()
- * widget_TEXT_WINDOW_design()
+ * widget_head_MAIN_WINDOW_design()
+ * widget_head_DIALOG_WINDOW_design()
+ * widget_head_TEXT_WINDOW_design()
  *
  *
  * Widgets.c appelle :

src/widget.c/heads.c

@@ -35,39 +35,34 @@
 #define W_TEXT_WINDOW 700
 #define H_TEXT_WINDOW 1000
 
+
+/******************************************************************************/
+/*              G E T  +  S E T     A L L    W I N D O W S                    */
+/******************************************************************************/
+
 static GtkWindow *main_window, *dialog_window, *text_window;
 static GtkButton *btt_STATE, *btt_RULES, *btt_DATA;
 
-GtkWindow *head_get_MAIN_WINDOW() {return main_window;}
-GtkWindow *head_get_DIALOG_WINDOW() {return dialog_window;}
-GtkWindow *head_get_TEXT_WINDOW() {return text_window;}
+GtkWindow *widget_head_get_MAIN_WINDOW()   { return main_window;   }
+GtkWindow *widget_head_get_DIALOG_WINDOW() { return dialog_window; }
+GtkWindow *widget_head_get_TEXT_WINDOW()   { return text_window;   }
 
-void head_set_MAIN_WINDOW (GtkApplication *app)
-{
-  main_window = GTK_WINDOW (gtk_application_window_new (app));
-}
+void widget_head_set_MAIN_WINDOW (GtkApplication *app)
+{ main_window   = GTK_WINDOW (gtk_application_window_new (app)); }
 
-void head_set_DIALOG_WINDOW (GtkApplication *app)
-{
-  dialog_window = GTK_WINDOW (gtk_application_window_new (app));
-}
+void widget_head_set_DIALOG_WINDOW (GtkApplication *app)
+{ dialog_window = GTK_WINDOW (gtk_application_window_new (app)); }
 
-void head_set_TEXT_WINDOW (GtkApplication *app)
-{
-  text_window = GTK_WINDOW (gtk_application_window_new (app));
-}
+void widget_head_set_TEXT_WINDOW (GtkApplication *app)
+{ text_window   = GTK_WINDOW (gtk_application_window_new (app)); }
 
-GtkButton *get_GtkButton (char *btt_name)
-{
-  if (strcmp (btt_name, "state")) return btt_STATE;
-  if (strcmp (btt_name, "rules")) return btt_RULES;
-  if (strcmp (btt_name, "data analysis")) return btt_DATA;
-  return NULL;
-}
 
-//------------------------------------------------------------------------------
 
-void widget_TEXT_WINDOW_design (GtkWindow *main_window, GtkWindow *text_window)
+/******************************************************************************/
+/*                           T E X T    W I N D O W                           */
+/******************************************************************************/
+
+void widget_head_TEXT_WINDOW_design (GtkWindow *main_window, GtkWindow *text_window)
 {
   char *title =  "     Learn more about Gem Graph.      ";
   GtkWidget *header_bar = GTK_WIDGET (gtk_header_bar_new ());
@@ -84,7 +79,13 @@ void widget_TEXT_WINDOW_design (GtkWindow *main_window, GtkWindow *text_window)
   gtk_window_set_destroy_with_parent (GTK_WINDOW (text_window), TRUE);
 }
 
-void widget_DIALOG_WINDOW_design (GtkWindow *main_window, GtkWindow *dialog_window)
+
+
+/******************************************************************************/
+/*                         D I A L O G    W I N D O W                         */
+/******************************************************************************/
+
+void widget_head_DIALOG_WINDOW_design (GtkWindow *main_window, GtkWindow *dialog_window)
 {
   char *title =  "     Save the current model before modifying it?     ";
   GtkWidget *header_bar = GTK_WIDGET (gtk_header_bar_new ());
@@ -118,14 +119,42 @@ void widget_DIALOG_WINDOW_design (GtkWindow *main_window, GtkWindow *dialog_wind
   gtk_window_set_modal (GTK_WINDOW (dialog_window), TRUE);
 }
 
-//------------------------------------------------------------------------------
 
-static void window_header_bar (GtkWindow *window, char *title)
+
+/******************************************************************************/
+/*                    M A I N    W I N D O W    C E N T E R                   */
+/******************************************************************************/
+
+static GtkWidget *window_header_bar (GtkWindow *window);
+static void window_header_bar_left (GtkWidget *header_bar);
+static void window_header_bar_right (GtkWidget *header_bar);
+
+void widget_head_MAIN_WINDOW_design (GtkWindow *main_window){
+  GtkWidget *header_bar = window_header_bar (main_window);
+  window_header_bar_left (header_bar);
+  window_header_bar_right (header_bar);
+  // next line  <=>  calls.on_toggle_STATE_RULES_DATA (btt_STATE)
+  gtk_check_button_set_active (GTK_CHECK_BUTTON (btt_STATE), TRUE);
+  gtk_window_present (GTK_WINDOW (main_window));
+}
+
+static GtkWidget *window_header_bar (GtkWindow *window)
 {
+  char *title = "E coli   (with permission from David S. Goodsell, 2009)";
   GtkWidget *header_bar = GTK_WIDGET (gtk_header_bar_new ());
   gtk_header_bar_set_title_widget (GTK_HEADER_BAR (header_bar), gtk_label_new (title));
   gtk_window_set_titlebar (window, header_bar);
+ return header_bar;
+}
 
+
+
+/******************************************************************************/
+/*                      M A I N    W I N D O W    L E F T                     */
+/******************************************************************************/
+
+static void window_header_bar_left (GtkWidget *header_bar)
+{
   gpointer no_local_data = NULL;
 
   GtkButton *btt_XOR_EXEC_EDIT = GTK_BUTTON (gtk_toggle_button_new ());
@@ -155,7 +184,19 @@ static void window_header_bar (GtkWindow *window, char *title)
   gtk_header_bar_pack_start (GTK_HEADER_BAR (header_bar), GTK_WIDGET (btt_RULES));
   gtk_header_bar_pack_start (GTK_HEADER_BAR (header_bar), GTK_WIDGET (btt_DATA));
 
-  //  https://iconduck.com/sets/adwaita-icon-theme   https://iconduck.com/sets/carbon-icons
+}
+
+
+
+/******************************************************************************/
+/*                     M A I N    W I N D O W    R I G H T                    */
+/******************************************************************************/
+
+static void connect(GApplication *app, gpointer *data) { puts("Connect menu item clicked.\n"); }
+
+static void window_header_bar_right (GtkWidget *header_bar)
+{
+  gpointer no_local_data = NULL;
 
   GtkButton *btt_go_home = GTK_BUTTON (gtk_button_new ());
   gtk_button_set_icon_name (btt_go_home, "go-home-symbolic");
@@ -163,38 +204,109 @@ static void window_header_bar (GtkWindow *window, char *title)
   gtk_header_bar_pack_end (GTK_HEADER_BAR (header_bar), GTK_WIDGET (btt_go_home));
 
   GtkButton *search = GTK_BUTTON (gtk_button_new ());
-  gtk_button_set_icon_name (search, "user-trash-symbolic");
-  gtk_button_set_icon_name (search, "emblem-documents-symbolic");
-  gtk_button_set_icon_name (search, "preferences-desktop-appearance-symbolic");
-  gtk_button_set_icon_name (search, "applications-utilities-symbolic");
   gtk_button_set_icon_name (search, "folder-saved-search-symbolic");
+  g_signal_connect (search, "clicked", G_CALLBACK (on_clicked_search), no_local_data);
   gtk_header_bar_pack_end (GTK_HEADER_BAR (header_bar), GTK_WIDGET (search));
 
 
-  GtkButton *open_menu = GTK_BUTTON (gtk_button_new ());    //   gtk_button_new  or  gtk_menu_button_new ?
-  gtk_button_set_icon_name (GTK_BUTTON (open_menu), "open-menu-symbolic");
-//  gtk_menu_button_set_label (open_menu, "open-menu-symbolic");
-  char *array[] = {"one", "two", "three", "four", NULL};
-  GtkStringList *list = gtk_string_list_new ((const char * const *) array);
-  if (0) printf ("heads.window_header_bar()  >  list [2] = %s\n",
-                 gtk_string_list_get_string (list, 1));
 
-//  gtk_menu_button_set_child (open_menu, list);
-  g_signal_connect (open_menu, "clicked", G_CALLBACK (on_clicked_MENU), open_menu);
+
+
+
+  GtkWidget* list_box = gtk_list_box_new();
+  GtkWidget *menu_item_A;
+  if (0)     menu_item_A = GTK_WIDGET (g_menu_item_new ("A", "activate"));
+  else       menu_item_A = GTK_WIDGET (gtk_label_new("A"));  gtk_list_box_append (GTK_LIST_BOX (list_box), menu_item_A);
+  GtkWidget *menu_item_B = GTK_WIDGET (gtk_label_new("B"));  gtk_list_box_append (GTK_LIST_BOX (list_box), menu_item_B);
+  GtkWidget *menu_item_C = GTK_WIDGET (gtk_label_new("C"));  gtk_list_box_append (GTK_LIST_BOX (list_box), menu_item_C);
+//  gtk_menu_item_activate (menu_item_C);
+
+// https://discourse.gnome.org/t/when-do-we-really-have-to-use-gtk-popover-present-to-show-a-popover-at-a-given-widget/17566/5
+  GtkWidget *pop = gtk_popover_new ();
+  gtk_popover_set_child (GTK_POPOVER (pop), list_box);
+  gtk_popover_present (GTK_POPOVER (pop));
+  gtk_popover_set_autohide (GTK_POPOVER (pop), FALSE);
+  gtk_popover_set_cascade_popdown (GTK_POPOVER (pop), TRUE);
+
+  GtkMenuButton *open_menu = GTK_MENU_BUTTON (gtk_menu_button_new ());
+//  gtk_menu_button_popup (open_menu);  gtk_menu_button_popdown (open_menu);
+  gtk_menu_button_set_icon_name (open_menu, "open-menu-symbolic");
+  gtk_menu_button_set_always_show_arrow (open_menu, TRUE);
+  gtk_menu_button_set_popover (open_menu, GTK_WIDGET (pop));
   gtk_header_bar_pack_end (GTK_HEADER_BAR (header_bar), GTK_WIDGET (open_menu));
 
 
+//  https://stackoverflow.com/questions/69135934/creating-a-simple-menubar-menu-and-menu-item-in-c-using-gtk4
+    GSimpleAction *act_connect = g_simple_action_new("connect", NULL);
+//    g_action_map_add_action(G_ACTION_MAP(app), G_ACTION(act_connect));
+    g_signal_connect(act_connect, "activate", G_CALLBACK(connect), NULL);
+//    GMenuItem *menu_item_E = g_menu_item_new("connect", "app.connect");
+//  gtk_list_box_append (GTK_LIST_BOX (list_box), GTK_WIDGET (menu_item_E));
+
+
+  g_signal_connect (open_menu, "activate", G_CALLBACK (on_clicked_menu_experiment), list_box);
+
+
+// signal 'clicked'  is invalid for instance '0xbcb2900' of type 'GtkMenuButton'
+// signal 'clicked'  is invalid for instance '0x2c992b9' of type 'GtkPopover'
+// signal 'clicked'  is invalid for instance '0x2812f80' of type 'GtkListBox'
+// signal 'clicked'  is invalid for instance '0x2a15120' of type 'GtkLabel'
+//
+// signal 'activate' is invalid for instance '0x3c3de7a' of type 'GtkPopover'
+// signal 'activate' is invalid for instance '0x3d62f80' of type 'GtkListBox'
+// signal 'activate' is invalid for instance '0x17fb93d' of type 'GtkLabel'
+
+
+
+
+
+
+
+
+/*
+  https://docs.gtk.org/gtk4/class.ListView.html
+  GtkStringList *model = gtk_string_list_new (NULL); //  model = create_application_list ();
+
+  GtkSignalListItemFactory *factory = GTK_SIGNAL_LIST_ITEM_FACTORY (gtk_signal_list_item_factory_new());
+  g_signal_connect (factory, "setup", G_CALLBACK (setup_listitem_cb), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (bind_listitem_cb), NULL);
+
+  GtkStringList *list = gtk_list_view_new (GTK_SELECTION_MODEL (gtk_single_selection_new (model)), factory);
+
+  g_signal_connect (list, "activate", G_CALLBACK (activate_cb), NULL);
+
+  gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), list);
+*/
+
+
+
+
+
+
+
+
+
+  //  ce qui suit ira dans le callback
+  GtkListBoxRow *selected_row = gtk_list_box_get_selected_row (GTK_LIST_BOX (list_box));
+  if (selected_row != NULL)
+    printf("selected_row = %s\n",
+           gtk_button_get_label (GTK_BUTTON (gtk_list_box_row_get_child (selected_row))));
+
+//   g_signal_connect (menu_item_C, "clicked", G_CALLBACK (on_clicked_HOME), no_local_data);
 
-  GtkWidget *menu_btt = gtk_menu_button_new ();
-  gtk_menu_button_set_child (GTK_MENU_BUTTON (menu_btt), NULL);
-  gtk_menu_button_set_menu_model (GTK_MENU_BUTTON (menu_btt), NULL); // GMenuModel* menu_model
-  gtk_header_bar_pack_end (GTK_HEADER_BAR (header_bar), GTK_WIDGET (menu_btt));
 }
 
-void widget_MAIN_WINDOW_design (GtkWindow *main_window){
-  window_header_bar (main_window,
-                     "E coli   (with permission from David S. Goodsell, 2009)");
-  gtk_check_button_set_active (GTK_CHECK_BUTTON (btt_STATE), TRUE);
-  gtk_window_present (GTK_WINDOW (main_window));
-}
+
+
+/******************************************************************************/
+/*                      L O C A L   L A B   ( I C O N S )                     */
+/******************************************************************************/
+
+// https://iconduck.com/sets/adwaita-icon-theme
+// https://iconduck.com/sets/carbon-icons
+//
+//   gtk_button_set_icon_name (search, "user-trash-symbolic");
+//   gtk_button_set_icon_name (search, "emblem-documents-symbolic");
+//   gtk_button_set_icon_name (search, "preferences-desktop-appearance-symbolic");
+//   gtk_button_set_icon_name (search, "applications-utilities-symbolic");
 

src/widget.c/labo.c

@@ -61,12 +61,8 @@ void learning_how_to_create_a_menu (GtkMenuButton* menu_button) { //  Je veux qu
 
 //  GtkWidget ex = *gtk_menu_bar_new();
 
-  char *array[] = {"one", "two", "three", "four", NULL};
-  GtkStringList *list = gtk_string_list_new ((const char * const *) array);
-  printf ("labo.learning_how_to_create_a_menu ()  >  list [3] = %s\n", gtk_string_list_get_string (list, 2));
-
   GtkWidget* list_box = gtk_list_box_new ();
-  gtk_list_box_append (GTK_LIST_BOX (list_box), GTK_WIDGET (list));
+  gtk_list_box_append (GTK_LIST_BOX (menu_button), GTK_WIDGET (list_box));
   gtk_list_box_bind_model (GTK_LIST_BOX (list_box),
                            NULL, // GListModel* model,
                            NULL, // GtkListBoxCreateWidgetFunc create_widget_func,
@@ -106,7 +102,7 @@ void learning_how_to_create_a_menu (GtkMenuButton* menu_button) { //  Je veux qu
 
 
 
-void let_us_create_a_complex_useless_and_expensive_tree (struct TreeNode_t *tree_root) {
+void labo_let_us_create_a_complex_useless_and_expensive_tree (struct TreeNode_t *tree_root) {
     struct TreeNode_t *a    = create_user_tree_node("We, the people");add_child_node(tree_root, a);
     struct TreeNode_t *b    = create_user_tree_node("in Order to");   add_child_node(tree_root, b);
     struct TreeNode_t *c    = create_user_tree_node("do establish");  add_child_node(tree_root, c);
@@ -138,6 +134,14 @@ void let_us_create_a_complex_useless_and_expensive_tree (struct TreeNode_t *tree
     struct TreeNode_t *cc   = create_user_tree_node("access");        add_child_node(c, cc);
 }
 
+void labo_create_a_simple_gtk_string_list () {
+  char *array[] = {"one", "two", "three", "four", NULL};
+  GtkStringList *list = gtk_string_list_new ((const char * const *) array);
+  for (int i = 0; i < 4; i++)
+    printf ("in labo.a_simple_gtk_string_list()   >   list [%d + 1] = %s\n",\
+             i,
+             gtk_string_list_get_string (list, i));
+}
 
 /*
 "rule effect"

src/widget.c/menu.c

@@ -0,0 +1,132 @@
+/*  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *
+*                                                                              *
+*                              Gem-graph client                                *
+*                                                                              *
+*                                   Tree                                       *
+*                                                                              *
+*         Copyright © 2021 Libre en Communs <contact@a-lec.org>                *
+*         Copyright © 2021 Adrien Bourmault <neox@a-lec.org>                   *
+*         Copyright © 2021 Jean Sirmai <jean@a-lec.org>                        *
+*                                                                              *
+*                        This file is part of Gem-graph.                       *
+*                                                                              *
+*   This program is free software: you can redistribute it and/or modify it    *
+*         under the terms of the GNU Affero General Public License             *
+*                as published by the Free Software Foundation,                 *
+*                       either version 3 of the License,                       *
+*                    or (at your option) any later version.                    *
+*                                                                              *
+*       This program is distributed in the hope that it will be useful,        *
+*                         but WITHOUT ANY WARRANTY;                            *
+*            without even the implied warranty of MERCHANTABILITY              *
+*                    or FITNESS FOR A PARTICULAR PURPOSE.                      *
+*         See the GNU Affero General Public License for more details.          *
+*                                                                              *
+*   You should have received a copy of the GNU Affero General Public License   *
+*     along with this program.  If not, see <http://www.gnu.org/licenses/>.    *
+*                                                                              *
+*  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  *  */
+
+
+#include "../../include/calls.h"
+#include "../../include/widgets.h"
+
+//  GTK_ORIENTATION_VERTICAL       GTK_ORIENTATION_HORIZONTAL
+
+
+static void add_menu_item (struct MenuNode_t *parent, struct MenuNode_t *child){
+    if (parent->child) {
+        struct MenuNode_t *cur = parent->child;
+        while (cur && cur->next) {cur = cur->next;}
+        cur->next = child;
+    } else parent->child = child;
+}
+
+struct MenuNode_t *create_user_menu_node (const gchar* text){
+    struct MenuNode_t *node = g_malloc0 (sizeof(struct MenuNode_t));
+    node->text = g_strdup (text);
+    node->child = NULL;       //  if (0) printf("create_user_menu_node  %s\n", text);
+    return node;
+}
+
+static GListModel* get_user_menu_model_child (struct MenuNode_t *parent){
+    GtkStringList *list = NULL;
+    if (parent) {
+        if (0) printf("[get_user_menu_model_child] here is %s content : ", parent->text);
+        struct MenuNode_t *child = parent->child;
+        if (child) {list = gtk_string_list_new(NULL);}
+        while(child) {
+             gtk_string_list_append(list, child->text);
+             if (0) printf("%s ", child->text);
+             child = child->next;
+        }
+    } //  else printf("hot.c  GListModel* get_user_menu_model_child (struct MenuNode_t *parent)  child = %d \n", parent);
+    if (0) printf("\n");
+    return G_LIST_MODEL(list);
+}
+
+static GListModel* get_user_menu_model (GObject *item, gpointer root){
+    struct MenuNode_t *cur = (struct MenuNode_t *)root;
+    struct MenuNode_t *parent = root;
+    const gchar *string =  gtk_string_object_get_string (GTK_STRING_OBJECT (item));
+    while (cur) {
+        if (strcmp(string, cur->text) == 0) break;
+        cur = cur->next;
+        if (cur == NULL) {cur = parent->child; parent = cur;}
+    }
+    if (0) printf("[get_user_user_menu_model] looked for %s in %s item\n", cur->text, string);
+//  ! WARNING !  TODO   CUR EST L'ENFANT, MAINTENANT   DONC, SI CUR EST UNE FEUILLE, JE N'ATTEINDRAI PAS SON ENFANT
+    return get_user_menu_model_child (cur);
+}
+
+GtkWidget *get_menu_anchor()
+{
+  // https://docs.gtk.org/gio/class.MenuModel.html
+  // https://www.geany.org/manual/gtk/gobject/index.html
+  // https://developer.gnome.org/hig/patterns/controls/menus.html
+
+  if (0) labo_create_a_simple_gtk_string_list ();
+  struct MenuNode_t *menu_root   = create_user_menu_node("menu");
+  struct MenuNode_t *item_a = create_user_menu_node("item_a");add_menu_item (menu_root, item_a);
+  struct MenuNode_t *item_b = create_user_menu_node("item_b");add_menu_item (menu_root, item_b);
+  struct MenuNode_t *item_c = create_user_menu_node("item_c");add_menu_item (menu_root, item_c);
+
+//  GtkWidget* list_box = gtk_list_box_new();
+
+  GtkStringList *model = gtk_string_list_new (NULL);
+  gtk_string_list_append (model, menu_root->text);
+  GtkSignalListItemFactory *factory = GTK_SIGNAL_LIST_ITEM_FACTORY (gtk_signal_list_item_factory_new());
+  g_signal_connect (factory, "setup", G_CALLBACK(on_setup_user_menu_factory), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK(on_bind_user_menu_factory), NULL);
+
+  GtkTreeListModel *menu_model = gtk_tree_list_model_new (
+      G_LIST_MODEL (model),
+      FALSE, // Passthrough - False in actual usage with dynamic children retrieval
+      FALSE, // TRUE, //  FALSE, // autoexpand
+      (GtkTreeListModelCreateModelFunc) &get_user_menu_model,
+      menu_root,
+      NULL // (GDestroyNotify) free_user_menu_node
+  );
+
+  GtkSingleSelection *selection_model = gtk_single_selection_new (G_LIST_MODEL (menu_model));
+  gtk_single_selection_set_autoselect (selection_model, FALSE);
+  gtk_single_selection_set_can_unselect (selection_model, TRUE);
+  GtkWidget *list_view = gtk_list_view_new (GTK_SELECTION_MODEL (selection_model),
+                                            GTK_LIST_ITEM_FACTORY (factory));
+
+  return list_view;
+}
+/*
+  GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (gtk_scrolled_window_new());
+// Allocation height too small. Tried to allocate 1922x1030, but GtkNotebook 0x25cd4c0 needs at least 1922x1064.
+// even if I remove (comment) the next line :
+  gtk_scrolled_window_set_child (scrolled_window, list_view);
+  gtk_scrolled_window_set_policy (scrolled_window, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+  gtk_widget_set_vexpand (GTK_WIDGET (scrolled_window), TRUE);
+  gtk_widget_set_visible (GTK_WIDGET (scrolled_window), TRUE);
+  gtk_widget_set_visible (GTK_WIDGET (list_view), TRUE);
+  return scrolled_window;
+}
+*/
+
+

src/widget.c/tree.c

@@ -82,7 +82,7 @@ static GListModel* get_user_tree_model (GObject *item, gpointer root){
 GtkScrolledWindow *get_user_rules_tree ()
 {
   struct TreeNode_t *tree_root = create_user_tree_node("root");
-  let_us_create_a_complex_useless_and_expensive_tree (tree_root);
+  labo_let_us_create_a_complex_useless_and_expensive_tree (tree_root);
 
   GtkStringList *model = gtk_string_list_new(NULL);
   gtk_string_list_append (model, tree_root->text);