xwayland/xwm: fix window closing when props race

we need to recheck before closing, ideally on change but that's later

2 files changed, 14 insertions, 4 deletions

diff --git a/src/xwayland/XSurface.cpp b/src/xwayland/XSurface.cpp
index ca4c4be5..5c5f3b5c 100644
--- a/src/xwayland/XSurface.cpp
+++ b/src/xwayland/XSurface.cpp
@@ -7,8 +7,6 @@
 
 #ifndef NO_XWAYLAND
 
-#include <ranges>
-
 CXWaylandSurface::CXWaylandSurface(uint32_t xID_, CBox geometry_, bool OR) : m_xID(xID_), m_geometry(geometry_), m_overrideRedirect(OR) {
     xcb_res_query_client_ids_cookie_t client_id_cookie = {0};
     if (g_pXWayland->m_wm->m_xres) {
@@ -42,6 +40,15 @@ CXWaylandSurface::CXWaylandSurface(uint32_t xID_, CBox geometry_, bool OR) : m_x
         free(reply); // NOLINT(cppcoreguidelines-no-malloc)
     }
 
+    // FIXME: this is a race, we need to listen to props changed
+    recheckSupportedProps();
+
+    m_events.resourceChange.listenStatic([this] { ensureListeners(); });
+}
+
+void CXWaylandSurface::recheckSupportedProps() {
+    m_supportedProps.clear();
+
     auto  listCookie = xcb_list_properties(g_pXWayland->m_wm->getConnection(), m_xID);
     auto* listReply  = xcb_list_properties_reply(g_pXWayland->m_wm->getConnection(), listCookie, nullptr);
     auto  getCookie  = xcb_get_property(g_pXWayland->m_wm->getConnection(), 0, m_xID, HYPRATOMS["WM_PROTOCOLS"], XCB_ATOM_ATOM, 0, 32);
@@ -68,8 +75,6 @@ CXWaylandSurface::CXWaylandSurface(uint32_t xID_, CBox geometry_, bool OR) : m_x
 
         free(getReply);
     }
-
-    m_events.resourceChange.listenStatic([this] { ensureListeners(); });
 }
 
 void CXWaylandSurface::ensureListeners() {
@@ -253,6 +258,10 @@ void CXWaylandSurface::restackToTop() {
 }
 
 void CXWaylandSurface::close() {
+
+    // Recheck the supported props, check if we maybe have WM_DELETE_WINDOW.
+    recheckSupportedProps();
+
     if (m_supportedProps[HYPRATOMS["WM_DELETE_WINDOW"]]) {
         xcb_client_message_data_t msg = {};
         msg.data32[0]                 = HYPRATOMS["WM_DELETE_WINDOW"];
diff --git a/src/xwayland/XSurface.hpp b/src/xwayland/XSurface.hpp
index 6c00f915..a8ccac4d 100644
--- a/src/xwayland/XSurface.hpp
+++ b/src/xwayland/XSurface.hpp
@@ -112,6 +112,7 @@ class CXWaylandSurface {
     void unmap();
     void considerMap();
     void setWithdrawn(bool withdrawn);
+    void recheckSupportedProps();
 
     struct {
         CHyprSignalListener destroyResource;