wayland: Add support for the delete event

protocol/xdg-shell.xml

@@ -373,6 +373,19 @@
 	decorations should be updated accordingly.
       </description>
     </event>
+
+    <event name="delete">
+      <description summary="surface wants to be closed">
+        The delete event is sent by the compositor when the user
+        wants the surface to be closed. This should be equivalent to
+        the user clicking the close button in client-side decorations,
+        if your application has any...
+
+        This is only a request that the user intends to close your
+        window. The client may choose to ignore this request, or show
+        a dialog to ask the user to save their data...
+      </description>
+    </event>
   </interface>
 
   <interface name="xdg_popup" version="1">

src/core/delete.c

@@ -37,6 +37,8 @@
 #include <stdlib.h>
 #include <stdio.h>
 
+#include "meta-wayland-surface.h"
+
 static void meta_window_present_delete_dialog (MetaWindow *window,
                                                guint32     timestamp);
 
@@ -141,24 +143,31 @@ void
 meta_window_delete (MetaWindow  *window,
                     guint32      timestamp)
 {
-  meta_error_trap_push (window->display);
+  if (window->client_type == META_WINDOW_CLIENT_TYPE_X11)
-  if (window->delete_window)
     {
-      meta_topic (META_DEBUG_WINDOW_OPS,
+      meta_error_trap_push (window->display);
-                  "Deleting %s with delete_window request\n",
+      if (window->delete_window)
-                  window->desc);
+        {
-      meta_window_send_icccm_message (window,
+          meta_topic (META_DEBUG_WINDOW_OPS,
-                                      window->display->atom_WM_DELETE_WINDOW,
+                      "Deleting %s with delete_window request\n",
-                                      timestamp);
+                      window->desc);
+          meta_window_send_icccm_message (window,
+                                          window->display->atom_WM_DELETE_WINDOW,
+                                          timestamp);
+        }
+      else
+        {
+          meta_topic (META_DEBUG_WINDOW_OPS,
+                      "Deleting %s with explicit kill\n",
+                      window->desc);
+          XKillClient (window->display->xdisplay, window->xwindow);
+        }
+      meta_error_trap_pop (window->display);
     }
   else
     {
-      meta_topic (META_DEBUG_WINDOW_OPS,
+      meta_wayland_surface_delete (window->surface);
-                  "Deleting %s with explicit kill\n",
-                  window->desc);
-      XKillClient (window->display->xdisplay, window->xwindow);
     }
-  meta_error_trap_pop (window->display);
 
   meta_window_check_alive (window, timestamp);
 

src/wayland/meta-wayland-surface.c

@@ -1464,3 +1464,10 @@ meta_wayland_surface_ping (MetaWaylandSurface *surface,
   else if (surface->xdg_popup.resource)
     xdg_popup_send_ping (surface->xdg_popup.resource, timestamp);
 }
+
+void
+meta_wayland_surface_delete (MetaWaylandSurface *surface)
+{
+  if (surface->xdg_surface.resource)
+    xdg_surface_send_delete (surface->xdg_surface.resource);
+}

src/wayland/meta-wayland-surface.h

@@ -115,5 +115,6 @@ void                meta_wayland_surface_focused_unset (MetaWaylandSurface *surf
 
 void                meta_wayland_surface_ping (MetaWaylandSurface *surface,
                                                guint32             serial);
+void                meta_wayland_surface_delete (MetaWaylandSurface *surface);
 
 #endif