xwayland: show the dialog after ecore_wl2 is in sync

otherwise ecore_wl2 could produce crashes.

src/bin/e_comp_wl_data.c

@@ -376,7 +376,6 @@ _e_comp_wl_data_source_cb_resource_destroy(struct wl_resource *resource)
 
    if (e_comp_wl->drag_source == source)
      {
-        e_comp_wl->drag_source = NULL;
         //free the drag here
         e_object_del(E_OBJECT(e_comp_wl->drag));
         e_comp_wl->drag = NULL;

src/bin/e_dnd.c

@@ -1072,8 +1072,6 @@ _e_drag_end(int x, int y)
    _drag_current->cb.finished = NULL;
 
    e_object_del(E_OBJECT(_drag_current));
-   if (e_comp->comp_type == E_PIXMAP_TYPE_WL)
-     e_comp_ungrab_input(1, 1);
 }
 
 static void
@@ -1153,6 +1151,10 @@ _e_drag_free(E_Drag *drag)
           ecore_x_window_free(_drag_win);
         ecore_x_window_shadow_tree_flush();
      }
+   else
+     {
+        e_comp_ungrab_input(1, 1);
+     }
 #endif
    e_bindings_disabled_set(0);
    _drag_win = 0;

src/modules/xwayland/e_mod_main.c

@@ -9,6 +9,7 @@
 EINTERN void dnd_init(void);
 EINTERN void dnd_shutdown(void);
 
+static Ecore_Event_Handler *sync_handler;
 static E_Module *xwl_init(E_Module *m);
 static void xwl_shutdown(void);
 
@@ -337,9 +338,13 @@ setup_lock(void)
 }
 
 static Eina_Bool
-error_dialog()
+_cb_sync_done(void *data EINA_UNUSED, int type EINA_UNUSED, void *event)
 {
    e_util_dialog_internal(_("Error"), _("Cannot launch XWayland from X11 display."));
+
+   ecore_event_handler_del(sync_handler);
+   sync_handler = NULL;
+
    return EINA_FALSE;
 }
 
@@ -353,7 +358,7 @@ xwl_init(E_Module *m)
 
    if (getenv("DISPLAY"))
      {
-        ecore_timer_add(1.0, error_dialog, NULL);
+        sync_handler = ecore_event_handler_add(ECORE_WL2_EVENT_SYNC_DONE, _cb_sync_done, NULL);
         return NULL;
      }