window: Move can_ping to a function and implement in X11

https://gitlab.gnome.org/GNOME/mutter/merge_requests/421

src/core/display.c

@@ -1992,7 +1992,7 @@ meta_display_ping_window (MetaWindow *window,
       return;
     }
 
-  if (!window->can_ping)
+  if (!meta_window_can_ping (window))
     return;
 
   ping_data = g_new (MetaPingData, 1);

src/core/window-private.h

@@ -326,8 +326,6 @@ struct _MetaWindow
   /* whether net_wm_icon_geometry has been set */
   guint icon_geometry_set : 1;
 
-  /* These are the flags from WM_PROTOCOLS */
-  guint can_ping : 1;
   /* Globally active / No input */
   guint input : 1;
 
@@ -570,6 +568,7 @@ struct _MetaWindowClass
                                    ClutterInputDevice *source);
   gboolean (*is_focusable)        (MetaWindow *window);
   gboolean (*is_stackable)        (MetaWindow *window);
+  gboolean (*can_ping)            (MetaWindow *window);
   gboolean (*are_updates_frozen)  (MetaWindow *window);
 };
 
@@ -665,6 +664,8 @@ void     meta_window_set_focused_internal (MetaWindow *window,
 
 gboolean meta_window_is_focusable (MetaWindow *window);
 
+gboolean meta_window_can_ping (MetaWindow *window);
+
 void     meta_window_current_workspace_changed (MetaWindow *window);
 
 void meta_window_show_menu (MetaWindow         *window,

src/core/window.c

@@ -1079,7 +1079,6 @@ _meta_window_shared_new (MetaDisplay         *display,
   window->initial_timestamp_set = FALSE;
   window->net_wm_user_time_set = FALSE;
   window->user_time_window = None;
-  window->can_ping = FALSE;
   window->input = TRUE;
   window->calc_placement = FALSE;
   window->shaken_loose = FALSE;
@@ -8536,6 +8535,12 @@ meta_window_is_focusable (MetaWindow *window)
   return META_WINDOW_GET_CLASS (window)->is_focusable (window);
 }
 
+gboolean
+meta_window_can_ping (MetaWindow *window)
+{
+  return META_WINDOW_GET_CLASS (window)->can_ping (window);
+}
+
 gboolean
 meta_window_is_stackable (MetaWindow *window)
 {

src/wayland/meta-window-wayland.c

@@ -591,6 +591,12 @@ meta_window_wayland_is_focusable (MetaWindow *window)
   return window->input;
 }
 
+static gboolean
+meta_window_wayland_can_ping (MetaWindow *window)
+{
+  return TRUE;
+}
+
 static gboolean
 meta_window_wayland_is_stackable (MetaWindow *window)
 {
@@ -626,6 +632,7 @@ meta_window_wayland_class_init (MetaWindowWaylandClass *klass)
   window_class->shortcuts_inhibited = meta_window_wayland_shortcuts_inhibited;
   window_class->is_focusable = meta_window_wayland_is_focusable;
   window_class->is_stackable = meta_window_wayland_is_stackable;
+  window_class->can_ping = meta_window_wayland_can_ping;
   window_class->are_updates_frozen = meta_window_wayland_are_updates_frozen;
 }
 
@@ -665,7 +672,6 @@ meta_window_wayland_new (MetaDisplay        *display,
                                     WithdrawnState,
                                     META_COMP_EFFECT_CREATE,
                                     &attrs);
-  window->can_ping = TRUE;
 
   meta_x11_error_trap_pop (display->x11_display); /* pop the XSync()-reducing trap */
 

src/x11/window-props.c

@@ -1531,8 +1531,8 @@ reload_wm_protocols (MetaWindow    *window,
 {
   int i;
 
-  window->can_ping = FALSE;
   meta_window_x11_set_wm_take_focus (window, FALSE);
+  meta_window_x11_set_wm_ping (window, FALSE);
   meta_window_x11_set_wm_delete_window (window, FALSE);
 
   if (value->type == META_PROP_VALUE_INVALID)
@@ -1549,7 +1549,7 @@ reload_wm_protocols (MetaWindow    *window,
         meta_window_x11_set_wm_delete_window (window, TRUE);
       else if (value->v.atom_list.atoms[i] ==
                window->display->x11_display->atom__NET_WM_PING)
-        window->can_ping = TRUE;
+        meta_window_x11_set_wm_ping (window, TRUE);
       ++i;
     }
 

src/x11/window-x11-private.h

@@ -48,6 +48,7 @@ struct _MetaWindowX11Private
   guint wm_state_skip_taskbar : 1;
   guint wm_state_skip_pager : 1;
   guint wm_take_focus : 1;
+  guint wm_ping : 1;
   guint wm_delete_window : 1;
 
   /* Weird "_NET_WM_STATE_MODAL" flag */

src/x11/window-x11.c

@@ -682,6 +682,27 @@ meta_window_x11_unmanage (MetaWindow *window)
     }
 }
 
+void
+meta_window_x11_set_wm_ping (MetaWindow *window,
+                             gboolean    ping)
+{
+  MetaWindowX11 *window_x11 = META_WINDOW_X11 (window);
+  MetaWindowX11Private *priv =
+    meta_window_x11_get_instance_private (window_x11);
+
+  priv->wm_ping = ping;
+}
+
+static gboolean
+meta_window_x11_can_ping (MetaWindow *window)
+{
+  MetaWindowX11 *window_x11 = META_WINDOW_X11 (window);
+  MetaWindowX11Private *priv =
+    meta_window_x11_get_instance_private (window_x11);
+
+  return priv->wm_ping;
+}
+
 static void
 meta_window_x11_ping (MetaWindow *window,
                       guint32     serial)
@@ -1710,6 +1731,7 @@ meta_window_x11_class_init (MetaWindowX11Class *klass)
   window_class->shortcuts_inhibited = meta_window_x11_shortcuts_inhibited;
   window_class->is_focusable = meta_window_x11_is_focusable;
   window_class->is_stackable = meta_window_x11_is_stackable;
+  window_class->can_ping = meta_window_x11_can_ping;
   window_class->are_updates_frozen = meta_window_x11_are_updates_frozen;
 }
 

src/x11/window-x11.h

@@ -53,6 +53,8 @@ void meta_window_x11_set_net_wm_state            (MetaWindow *window);
 void meta_window_x11_set_wm_state                (MetaWindow *window);
 void meta_window_x11_set_wm_take_focus           (MetaWindow *window,
                                                   gboolean    take_focus);
+void meta_window_x11_set_wm_ping                 (MetaWindow *window,
+                                                  gboolean    ping);
 void meta_window_x11_set_wm_delete_window        (MetaWindow *window,
                                                   gboolean    delete_window);
 void meta_window_x11_set_allowed_actions_hint    (MetaWindow *window);