wayland: Handle the toplevel export property as a string

xdg-toplevel export handles are strings, so treat the property as one. Avoids the need to manually manage the string pointer.

include/SDL3/SDL_video.h

@@ -1083,7 +1083,7 @@ extern DECLSPEC SDL_Window *SDLCALL SDL_GetWindowParent(SDL_Window *window);
  *   with the window
  * - `SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_POINTER`: the xdg_toplevel role
  *   associated with the window
- * - 'SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_POINTER': the export
+ * - 'SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_STRING': the export
  *   handle associated with the window
  * - `SDL_PROP_WINDOW_WAYLAND_XDG_POPUP_POINTER`: the xdg_popup role
  *   associated with the window
@@ -1110,34 +1110,34 @@ extern DECLSPEC SDL_Window *SDLCALL SDL_GetWindowParent(SDL_Window *window);
  */
 extern DECLSPEC SDL_PropertiesID SDLCALL SDL_GetWindowProperties(SDL_Window *window);
 
-#define SDL_PROP_WINDOW_SHAPE_POINTER                              "SDL.window.shape"
-#define SDL_PROP_WINDOW_ANDROID_WINDOW_POINTER                     "SDL.window.android.window"
-#define SDL_PROP_WINDOW_ANDROID_SURFACE_POINTER                    "SDL.window.android.surface"
-#define SDL_PROP_WINDOW_UIKIT_WINDOW_POINTER                       "SDL.window.uikit.window"
-#define SDL_PROP_WINDOW_UIKIT_METAL_VIEW_TAG_NUMBER                "SDL.window.uikit.metal_view_tag"
-#define SDL_PROP_WINDOW_KMSDRM_DEVICE_INDEX_NUMBER                 "SDL.window.kmsdrm.dev_index"
-#define SDL_PROP_WINDOW_KMSDRM_DRM_FD_NUMBER                       "SDL.window.kmsdrm.drm_fd"
-#define SDL_PROP_WINDOW_KMSDRM_GBM_DEVICE_POINTER                  "SDL.window.kmsdrm.gbm_dev"
-#define SDL_PROP_WINDOW_COCOA_WINDOW_POINTER                       "SDL.window.cocoa.window"
-#define SDL_PROP_WINDOW_COCOA_METAL_VIEW_TAG_NUMBER                "SDL.window.cocoa.metal_view_tag"
-#define SDL_PROP_WINDOW_VIVANTE_DISPLAY_POINTER                    "SDL.window.vivante.display"
-#define SDL_PROP_WINDOW_VIVANTE_WINDOW_POINTER                     "SDL.window.vivante.window"
-#define SDL_PROP_WINDOW_VIVANTE_SURFACE_POINTER                    "SDL.window.vivante.surface"
-#define SDL_PROP_WINDOW_WINRT_WINDOW_POINTER                       "SDL.window.winrt.window"
-#define SDL_PROP_WINDOW_WIN32_HWND_POINTER                         "SDL.window.win32.hwnd"
-#define SDL_PROP_WINDOW_WIN32_HDC_POINTER                          "SDL.window.win32.hdc"
-#define SDL_PROP_WINDOW_WIN32_INSTANCE_POINTER                     "SDL.window.win32.instance"
-#define SDL_PROP_WINDOW_WAYLAND_DISPLAY_POINTER                    "SDL.window.wayland.display"
-#define SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER                    "SDL.window.wayland.surface"
-#define SDL_PROP_WINDOW_WAYLAND_EGL_WINDOW_POINTER                 "SDL.window.wayland.egl_window"
-#define SDL_PROP_WINDOW_WAYLAND_XDG_SURFACE_POINTER                "SDL.window.wayland.xdg_surface"
-#define SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_POINTER               "SDL.window.wayland.xdg_toplevel"
-#define SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_POINTER "SDL.window.wayland.xdg_toplevel_export_handle"
-#define SDL_PROP_WINDOW_WAYLAND_XDG_POPUP_POINTER                  "SDL.window.wayland.xdg_popup"
-#define SDL_PROP_WINDOW_WAYLAND_XDG_POSITIONER_POINTER             "SDL.window.wayland.xdg_positioner"
-#define SDL_PROP_WINDOW_X11_DISPLAY_POINTER                        "SDL.window.x11.display"
-#define SDL_PROP_WINDOW_X11_SCREEN_NUMBER                          "SDL.window.x11.screen"
-#define SDL_PROP_WINDOW_X11_WINDOW_NUMBER                          "SDL.window.x11.window"
+#define SDL_PROP_WINDOW_SHAPE_POINTER                             "SDL.window.shape"
+#define SDL_PROP_WINDOW_ANDROID_WINDOW_POINTER                    "SDL.window.android.window"
+#define SDL_PROP_WINDOW_ANDROID_SURFACE_POINTER                   "SDL.window.android.surface"
+#define SDL_PROP_WINDOW_UIKIT_WINDOW_POINTER                      "SDL.window.uikit.window"
+#define SDL_PROP_WINDOW_UIKIT_METAL_VIEW_TAG_NUMBER               "SDL.window.uikit.metal_view_tag"
+#define SDL_PROP_WINDOW_KMSDRM_DEVICE_INDEX_NUMBER                "SDL.window.kmsdrm.dev_index"
+#define SDL_PROP_WINDOW_KMSDRM_DRM_FD_NUMBER                      "SDL.window.kmsdrm.drm_fd"
+#define SDL_PROP_WINDOW_KMSDRM_GBM_DEVICE_POINTER                 "SDL.window.kmsdrm.gbm_dev"
+#define SDL_PROP_WINDOW_COCOA_WINDOW_POINTER                      "SDL.window.cocoa.window"
+#define SDL_PROP_WINDOW_COCOA_METAL_VIEW_TAG_NUMBER               "SDL.window.cocoa.metal_view_tag"
+#define SDL_PROP_WINDOW_VIVANTE_DISPLAY_POINTER                   "SDL.window.vivante.display"
+#define SDL_PROP_WINDOW_VIVANTE_WINDOW_POINTER                    "SDL.window.vivante.window"
+#define SDL_PROP_WINDOW_VIVANTE_SURFACE_POINTER                   "SDL.window.vivante.surface"
+#define SDL_PROP_WINDOW_WINRT_WINDOW_POINTER                      "SDL.window.winrt.window"
+#define SDL_PROP_WINDOW_WIN32_HWND_POINTER                        "SDL.window.win32.hwnd"
+#define SDL_PROP_WINDOW_WIN32_HDC_POINTER                         "SDL.window.win32.hdc"
+#define SDL_PROP_WINDOW_WIN32_INSTANCE_POINTER                    "SDL.window.win32.instance"
+#define SDL_PROP_WINDOW_WAYLAND_DISPLAY_POINTER                   "SDL.window.wayland.display"
+#define SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER                   "SDL.window.wayland.surface"
+#define SDL_PROP_WINDOW_WAYLAND_EGL_WINDOW_POINTER                "SDL.window.wayland.egl_window"
+#define SDL_PROP_WINDOW_WAYLAND_XDG_SURFACE_POINTER               "SDL.window.wayland.xdg_surface"
+#define SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_POINTER              "SDL.window.wayland.xdg_toplevel"
+#define SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_STRING "SDL.window.wayland.xdg_toplevel_export_handle"
+#define SDL_PROP_WINDOW_WAYLAND_XDG_POPUP_POINTER                 "SDL.window.wayland.xdg_popup"
+#define SDL_PROP_WINDOW_WAYLAND_XDG_POSITIONER_POINTER            "SDL.window.wayland.xdg_positioner"
+#define SDL_PROP_WINDOW_X11_DISPLAY_POINTER                       "SDL.window.x11.display"
+#define SDL_PROP_WINDOW_X11_SCREEN_NUMBER                         "SDL.window.x11.screen"
+#define SDL_PROP_WINDOW_X11_WINDOW_NUMBER                         "SDL.window.x11.window"
 
 /**
  * Get the window flags.

src/dialog/unix/SDL_portaldialog.c

@@ -285,7 +285,7 @@ static void DBus_OpenDialog(const char *method, const char *method_title, SDL_Di
 
     handle_str = default_parent_window;
     if (props) {
-        const char *parent_handle = SDL_GetProperty(props, SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_POINTER, NULL);
+        const char *parent_handle = SDL_GetStringProperty(props, SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_STRING, NULL);
         if (parent_handle) {
             size_t len = SDL_strlen(parent_handle);
             len += sizeof(WAYLAND_HANDLE_PREFIX) + 1;

src/video/wayland/SDL_waylandwindow.c

@@ -1484,10 +1484,7 @@ static void exported_handle_handler(void *data, struct zxdg_exported_v2 *zxdg_ex
     SDL_WindowData *wind = (SDL_WindowData*)data;
     SDL_PropertiesID props = SDL_GetWindowProperties(wind->sdlwindow);
 
-    SDL_free(wind->export_handle);
-    wind->export_handle = SDL_strdup(handle);
-
-    SDL_SetProperty(props, SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_POINTER, wind->export_handle);
+    SDL_SetStringProperty(props, SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_STRING, handle);
 }
 
 static struct zxdg_exported_v2_listener exported_v2_listener = {
@@ -1823,10 +1820,7 @@ void Wayland_HideWindow(SDL_VideoDevice *_this, SDL_Window *window)
         zxdg_exported_v2_destroy(wind->exported);
         wind->exported = NULL;
 
-        SDL_free(wind->export_handle);
-        wind->export_handle = NULL;
-
-        SDL_SetProperty(props, SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_POINTER, NULL);
+        SDL_SetStringProperty(props, SDL_PROP_WINDOW_WAYLAND_XDG_TOPLEVEL_EXPORT_HANDLE_STRING, NULL);
     }
 
 #ifdef HAVE_LIBDECOR_H

src/video/wayland/SDL_waylandwindow.h

@@ -105,7 +105,6 @@ struct SDL_WindowData
     SDL_Window *keyboard_focus;
 
     char *app_id;
-    char *export_handle;
     float windowed_scale_factor;
 
     struct