app/ui: implement basic turn tracking

1 files changed, 15 insertions, 0 deletions

diff --git a/app/src/widgets/turn_order_view.cpp b/app/src/widgets/turn_order_view.cpp
index 700dfd3..c2b4afa 100644
--- a/app/src/widgets/turn_order_view.cpp
+++ b/app/src/widgets/turn_order_view.cpp
@@ -4,6 +4,7 @@
 #include "turns/domain/participant.hpp"
 #include "turns/lang/messages.hpp"
 
+#include <algorithm>
 #include <format>
 
 #include <sigc++/functors/mem_fun.h>
@@ -23,6 +24,7 @@ namespace turns::app::widgets
       , m_view{get_widget<Gtk::ListBox>("view")}
   {
     m_view->bind_model(m_model->list_model(), sigc::mem_fun(*this, &turn_order_view::handle_create_row));
+    m_model->property_active_participant().signal_changed().connect(sigc::mem_fun(*this, &turn_order_view::handle_active_participant_changed));
   }
 
   auto turn_order_view::get_model() const noexcept -> Glib::RefPtr<domain::turn_order>
@@ -30,6 +32,19 @@ namespace turns::app::widgets
     return m_model;
   }
 
+  auto turn_order_view::handle_active_participant_changed() -> void
+  {
+    std::ranges::for_each(m_view->get_children(), [](auto c) { c->remove_css_class("active-participant"); });
+
+    auto index = m_model->active_participant();
+    if (index != std::numeric_limits<domain::turn_order::active_participant_type>::max())
+    {
+      auto row = m_view->get_row_at_index(index);
+      row->add_css_class("active-participant");
+      row->grab_focus();
+    }
+  }
+
   auto turn_order_view::handle_create_row(Glib::RefPtr<Glib::Object> const item) -> Gtk::Widget *
   {
     auto participant = std::dynamic_pointer_cast<domain::participant>(item);