gtk: Change the private export handle api

Make unexport_handle take the handle, which will
let us deal with multiple exports in the future.

Update all callers to store their handle, and
pass it to unexport_handle.

gtk/deprecated/gtkshow.c

@@ -31,6 +31,7 @@ G_GNUC_BEGIN_IGNORE_DEPRECATIONS
 
 typedef struct {
   GtkWindow *parent;
+  char *handle;
   GAppLaunchContext *context;
   char *uri;
   GTask *task;
@@ -39,9 +40,10 @@ typedef struct {
 static void
 gtk_show_uri_data_free (GtkShowUriData *data)
 {
-  if (data->parent)
-    gtk_window_unexport_handle (data->parent);
+  if (data->parent && data->handle)
+    gtk_window_unexport_handle (data->parent, data->handle);
   g_clear_object (&data->parent);
+  g_free (data->handle);
   g_clear_object (&data->context);
   g_free (data->uri);
   g_clear_object (&data->task);
@@ -72,7 +74,10 @@ window_handle_exported (GtkWindow  *window,
   GtkShowUriData *data = user_data;
 
   if (handle)
-    g_app_launch_context_setenv (data->context, "PARENT_WINDOW_ID", handle);
+    {
+      g_app_launch_context_setenv (data->context, "PARENT_WINDOW_ID", handle);
+      data->handle = g_strdup (handle);
+    }
 
   g_app_info_launch_default_for_uri_async (data->uri,
                                            data->context,

gtk/gtkfilechoosernativeportal.c

@@ -52,6 +52,7 @@ typedef struct {
 
   const char *method_name;
 
+  char *exported_handle;
   GtkWindow *exported_window;
   PortalErrorHandler error_handler;
 } FilechooserPortalData;
@@ -79,7 +80,11 @@ filechooser_portal_data_clear (FilechooserPortalData *data)
 
   if (data->exported_window)
     {
-      gtk_window_unexport_handle (data->exported_window);
+      if (data->exported_handle)
+        {
+          gtk_window_unexport_handle (data->exported_window, data->exported_handle);
+          g_clear_pointer (&data->exported_handle, g_free);
+        }
       g_clear_object (&data->exported_window);
     }
 
@@ -460,6 +465,7 @@ window_handle_exported (GtkWindow  *window,
       gtk_grab_add (GTK_WIDGET (data->grab_widget));
     }
 
+  data->exported_handle = g_strdup (handle_str);
   show_portal_file_chooser (self, handle_str);
 }
 

gtk/gtkopenuriportal.c

@@ -108,6 +108,7 @@ enum {
 
 typedef struct {
   GtkWindow *parent;
+  char *parent_handle;
   GFile *file;
   char *uri;
   gboolean open_folder;
@@ -128,8 +129,9 @@ open_uri_data_free (OpenUriData *data)
   g_clear_object (&data->connection);
   if (data->cancel_handler)
     g_signal_handler_disconnect (data->cancellable, data->cancel_handler);
-  if (data->parent)
-    gtk_window_unexport_handle (data->parent);
+  if (data->parent && data->parent_handle)
+    gtk_window_unexport_handle (data->parent, data->parent_handle);
+  g_free (data->parent_handle);
   g_clear_object (&data->parent);
   g_clear_object (&data->file);
   g_free (data->uri);
@@ -426,6 +428,8 @@ window_handle_exported (GtkWindow  *window,
   GAppLaunchContext *context;
   char *activation_token = NULL;
 
+  data->parent_handle = g_strdup (handle);
+
   if (window)
     display = gtk_widget_get_display (GTK_WIDGET (window));
   else

gtk/gtkprintoperation-portal.c

@@ -48,6 +48,7 @@ typedef struct {
   GtkPrintOperationResult result;
   GtkPrintOperationPrintFunc print_cb;
   GtkWindow *parent;
+  char *handle;
   GMainLoop *loop;
   guint32 token;
   GDestroyNotify destroy;
@@ -62,8 +63,9 @@ portal_data_free (gpointer data)
 {
   PortalData *portal = data;
 
-  if (portal->parent)
-    gtk_window_unexport_handle (portal->parent);
+  if (portal->parent && portal->handle)
+    gtk_window_unexport_handle (portal->parent, portal->handle);
+  g_free (portal->handle);
   g_object_unref (portal->op);
   g_object_unref (portal->proxy);
   if (portal->loop)
@@ -547,6 +549,8 @@ window_handle_exported (GtkWindow  *window,
 {
   PortalData *portal = user_data;
 
+  portal->handle = g_strdup (handle_str);
+
   g_dbus_proxy_call (portal->proxy,
                      "PreparePrint",
                      g_variant_new ("(ss@a{sv}@a{sv}@a{sv})",

gtk/gtkwindow.c

@@ -6336,7 +6336,8 @@ gtk_window_export_handle (GtkWindow               *window,
 }
 
 void
-gtk_window_unexport_handle (GtkWindow *window)
+gtk_window_unexport_handle (GtkWindow  *window,
+                            const char *handle)
 {
   GtkWindowPrivate *priv = gtk_window_get_instance_private (window);
 

gtk/gtkwindowprivate.h

@@ -79,7 +79,8 @@ typedef void (*GtkWindowHandleExported)  (GtkWindow               *window,
 gboolean      gtk_window_export_handle   (GtkWindow               *window,
                                           GtkWindowHandleExported  callback,
                                           gpointer                 user_data);
-void          gtk_window_unexport_handle (GtkWindow               *window);
+void          gtk_window_unexport_handle (GtkWindow               *window,
+                                          const char              *handle);
 
 GtkWidget *      gtk_window_lookup_pointer_focus_widget (GtkWindow        *window,
                                                          GdkDevice        *device,