[gnome-games/wip/aplazas/gamepad-navigation: 6/7] sidebar-view: Allow gamepad navigation

[Adrien Plazas <aplazas src gnome org>]

commit 4b830cdbfc5e16e1a24e2a6c29dc2d81c352202d
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun Aug 5 14:54:07 2018 +0200

    sidebar-view: Allow gamepad navigation

 data/ui/sidebar-view.ui  |  8 ++++-
 src/ui/sidebar-view.vala | 94 +++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 100 insertions(+), 2 deletions(-)
---
diff --git a/data/ui/sidebar-view.ui b/data/ui/sidebar-view.ui
index 125489bf..bb672627 100644
--- a/data/ui/sidebar-view.ui
+++ b/data/ui/sidebar-view.ui
@@ -12,7 +12,8 @@
         <child>
           <object class="GtkListBox" id="list_box">
             <property name="visible">True</property>
-            <signal name="row-activated" handler="on_list_box_row_selected"/>
+            <signal name="row-activated" handler="on_list_box_row_activated"/>
+            <signal name="row-selected" handler="on_list_box_row_selected"/>
             <style>
               <class name="sidebar"/>
             </style>
@@ -27,4 +28,9 @@
       </object>
     </child>
   </template>
+  <object class="GamesGamepadBrowse" id="gamepad_browse">
+    <signal name="browse" handler="on_gamepad_browse"/>
+    <signal name="accept" handler="on_gamepad_accept"/>
+    <signal name="cancel" handler="on_gamepad_cancel"/>
+  </object>
 </interface>
diff --git a/src/ui/sidebar-view.vala b/src/ui/sidebar-view.vala
index a7215c47..53d349a0 100644
--- a/src/ui/sidebar-view.vala
+++ b/src/ui/sidebar-view.vala
@@ -25,6 +25,9 @@ private abstract class Games.SidebarView : Gtk.Box {
        [GtkChild]
        protected Gtk.ListBox list_box;
 
+       [GtkChild]
+       private GamepadBrowse gamepad_browse;
+
        construct {
                list_box.set_sort_func (sort_rows);
 
@@ -33,15 +36,104 @@ private abstract class Games.SidebarView : Gtk.Box {
                 });
        }
 
+       public bool gamepad_button_press_event (Manette.Event event) {
+               if (!get_mapped ())
+                       return false;
+
+               if (collection_view.has_game_selected ())
+                       if (collection_view.gamepad_button_press_event (event))
+                               return true;
+
+               return gamepad_browse.gamepad_button_press_event (event);
+       }
+
+       public bool gamepad_button_release_event (Manette.Event event) {
+               if (!get_mapped ())
+                       return false;
+
+               if (collection_view.has_game_selected ())
+                       if (collection_view.gamepad_button_release_event (event))
+                               return true;
+
+               return gamepad_browse.gamepad_button_release_event (event);
+       }
+
+       public bool gamepad_absolute_axis_event (Manette.Event event) {
+               if (!get_mapped ())
+                       return false;
+
+               if (collection_view.has_game_selected ())
+                       if (collection_view.gamepad_absolute_axis_event (event))
+                               return true;
+
+               return gamepad_browse.gamepad_absolute_axis_event (event);
+       }
+
+       [GtkCallback]
+       private bool on_gamepad_browse (Gtk.DirectionType direction) {
+               if (list_box.get_selected_rows ().length () == 0) {
+                       var first_row = list_box.get_row_at_index (0);
+                       if (first_row == null)
+                               return false;
+
+                       list_box.select_row (first_row);
+                       // This is needed to start moving the cursor with the gamepad only.
+                       first_row.focus (direction);
+
+                       return true;
+               }
+
+               switch (direction) {
+               case Gtk.DirectionType.UP:
+                       list_box.move_cursor (Gtk.MovementStep.DISPLAY_LINES, -1);
+
+                       return true;
+               case Gtk.DirectionType.DOWN:
+                       list_box.move_cursor (Gtk.MovementStep.DISPLAY_LINES, 1);
+
+                       return true;
+               case Gtk.DirectionType.RIGHT:
+                       list_box.activate_cursor_row ();
+
+                       return true;
+               default:
+                       return false;
+               }
+       }
+
+       [GtkCallback]
+       private bool on_gamepad_accept () {
+               list_box.activate_cursor_row ();
+
+               return true;
+       }
+
+       [GtkCallback]
+       private bool on_gamepad_cancel () {
+               collection_view.unselect_game ();
+
+               return true;
+       }
+
        protected abstract void game_added (Game game);
        protected abstract void invalidate (Gtk.ListBoxRow row_item);
        protected abstract int sort_rows (Gtk.ListBoxRow row1, Gtk.ListBoxRow row2);
 
        [GtkCallback]
-       private void on_list_box_row_selected (Gtk.ListBoxRow row_item) {
+       private void on_list_box_row_selected (Gtk.ListBoxRow? row_item) {
+               if (row_item == null)
+                       return;
+
                list_box.select_row (row_item);
+               row_item.focus (Gtk.DirectionType.LEFT);
                invalidate (row_item);
                collection_view.reset_scroll_position ();
+               collection_view.unselect_game ();
+       }
+
+       [GtkCallback]
+       private void on_list_box_row_activated (Gtk.ListBoxRow row_item) {
+               collection_view.select_default_game (Gtk.DirectionType.RIGHT);
        }
 
        private void on_model_changed (uint position, uint removed, uint added) {