Addon Manager: give addon list keyboard focus when opening manager

src/gui/dialogs/addon/manager.cpp

@@ -427,7 +427,7 @@ void addon_manager::pre_show(window& window)
 	on_addon_select(window);
 
 	window.keyboard_capture(&filter);
-	//window.add_to_keyboard_chain(&list.get_listbox());
+	list.add_list_to_keyboard_chain();
 
 	// Use handle the special addon_list retval to allow installing addons on double click
 	window.set_exit_hook(std::bind(&addon_manager::exit_hook, this, std::ref(window)));

src/gui/widgets/addon_list.cpp

@@ -29,6 +29,7 @@
 #include "gui/widgets/settings.hpp"
 #include "gui/widgets/stacked_widget.hpp"
 #include "gui/widgets/toggle_panel.hpp"
+#include "gui/widgets/window.hpp"
 #include "wml_exception.hpp"
 
 #include <algorithm>
@@ -317,6 +318,13 @@ listbox& addon_list::get_listbox()
 	return find_widget<listbox>(&get_grid(), "addons", false);
 }
 
+void addon_list::add_list_to_keyboard_chain()
+{
+	if(window* window = get_window()) {
+		window->add_to_keyboard_chain(&get_listbox());
+	}
+}
+
 void addon_list::finalize_setup()
 {
 	listbox& list = get_listbox();

src/gui/widgets/addon_list.hpp

@@ -125,6 +125,9 @@ public:
 		install_buttons_visibility_ = visibility;
 	}
 
+	/** Adds the internal listbox to the keyboard event chain. */
+	void add_list_to_keyboard_chain();
+
 	/** See @ref styled_widget::set_active. */
 	virtual void set_active(const bool) override
 	{