Go menu - enable/disable multi-page navigation items

diff --git a/src/layout_util.c b/src/layout_util.c
index a88187b..83db36c 100644 (file)
--- a/src/layout_util.c
+++ b/src/layout_util.c
@@ -2641,10 +2641,44 @@ static void layout_actions_setup_editors(LayoutWindow *lw)
        g_list_free(editors_list);
 }
 
+static gboolean go_menu_select(GtkWidget *widget, gpointer data)
+{
+       GtkAction *action;
+       LayoutWindow *lw = data;
+
+       action = gtk_action_group_get_action(lw->action_group, "FirstPage");
+       gtk_action_set_sensitive(action, FALSE);
+       action = gtk_action_group_get_action(lw->action_group, "PrevPage");
+       gtk_action_set_sensitive(action, FALSE);
+       action = gtk_action_group_get_action(lw->action_group, "LastPage");
+       gtk_action_set_sensitive(action, FALSE);
+       action = gtk_action_group_get_action(lw->action_group, "NextPage");
+       gtk_action_set_sensitive(action, FALSE);
+
+       if (lw->image && lw->image->image_fd && lw->image->image_fd->page_total > 0)
+               {
+               if (lw->image->image_fd->page_num > 0)
+                       {
+                       action = gtk_action_group_get_action(lw->action_group, "FirstPage");
+                       gtk_action_set_sensitive(action, TRUE);
+                       action = gtk_action_group_get_action(lw->action_group, "PrevPage");
+                       gtk_action_set_sensitive(action, TRUE);
+                       }
+               if (lw->image->image_fd->page_num < (lw->image->image_fd->page_total - 1))
+                       {
+                       action = gtk_action_group_get_action(lw->action_group, "LastPage");
+                       gtk_action_set_sensitive(action, TRUE);
+                       action = gtk_action_group_get_action(lw->action_group, "NextPage");
+                       gtk_action_set_sensitive(action, TRUE);
+                       }
+               }
+}
+
 void layout_actions_setup(LayoutWindow *lw)
 {
        GError *error;
        gint i;
+       GtkAction *action;
 
        DEBUG_1("%s layout_actions_setup: start", get_exec_time());
        if (lw->ui_manager) return;
@@ -2654,6 +2688,10 @@ void layout_actions_setup(LayoutWindow *lw)
 
        gtk_action_group_add_actions(lw->action_group,
                                     menu_entries, G_N_ELEMENTS(menu_entries), lw);
+
+       action = gtk_action_group_get_action(lw->action_group, "GoMenu");
+       g_signal_connect(G_OBJECT(action), "activate", G_CALLBACK(go_menu_select), lw);
+
        gtk_action_group_add_toggle_actions(lw->action_group,
                                            menu_toggle_entries, G_N_ELEMENTS(menu_toggle_entries), lw);
        gtk_action_group_add_radio_actions(lw->action_group,