clipboard: file transfer portal support

Implement file-list <-> application/vnd.flatpak.file-list
serialization by talking to the file transfer portal.

See https://github.com/flatpak/xdg-desktop-portal/pull/222

1 files changed, 73 insertions, 0 deletions

diff --git a/gdk/gdkcontentserializer.c b/gdk/gdkcontentserializer.c
index 7b99690224..cac4378cc2 100644
--- a/gdk/gdkcontentserializer.c
+++ b/gdk/gdkcontentserializer.c
@@ -23,6 +23,7 @@
 
 #include "gdkcontentformats.h"
 #include "gdkpixbuf.h"
+#include "filetransferportalprivate.h"
 #include "gdktextureprivate.h"
 
 #include <gdk-pixbuf/gdk-pixbuf.h>
@@ -702,6 +703,63 @@ file_serializer_finish (GObject      *source,
 }
 
 static void
+portal_ready (GObject *object,
+              GAsyncResult *result,
+              gpointer serializer)
+{
+  GError *error = NULL;
+  char *key;
+
+  if (!file_transfer_portal_register_files_finish (result, &key, &error))
+    {
+      gdk_content_serializer_return_error (serializer, error);
+      return;
+    }
+
+  g_output_stream_write_all_async (gdk_content_serializer_get_output_stream (serializer),
+                                   key,
+                                   strlen (key) + 1,
+                                   gdk_content_serializer_get_priority (serializer),
+                                   gdk_content_serializer_get_cancellable (serializer),
+                                   file_serializer_finish,
+                                   serializer);
+  gdk_content_serializer_set_task_data (serializer, key, g_free);
+}
+
+static void
+portal_file_serializer (GdkContentSerializer *serializer)
+{
+  GFile *file;
+  const GValue *value;
+  GPtrArray *files;
+
+  files = g_ptr_array_new_with_free_func (g_free);
+
+  value = gdk_content_serializer_get_value (serializer);
+
+  if (G_VALUE_HOLDS (value, G_TYPE_FILE))
+    {
+      file = g_value_get_object (gdk_content_serializer_get_value (serializer));
+      if (file)
+        g_ptr_array_add (files, g_file_get_path (file));
+      g_ptr_array_add (files, NULL);
+    }
+  else if (G_VALUE_HOLDS (value, GDK_TYPE_FILE_LIST))
+    {
+      GSList *l;
+
+      for (l = g_value_get_boxed (value); l; l = l->next)
+        g_ptr_array_add (files, g_file_get_path (l->data));
+
+      g_ptr_array_add (files, NULL);
+    }
+
+  /* this call doesn't copy the strings, so keep the array around until the registration is done */
+  file_transfer_portal_register_files ((const char **)files->pdata, TRUE, portal_ready, serializer);
+  gdk_content_serializer_set_task_data (serializer, files, (GDestroyNotify)g_ptr_array_unref);
+}
+
+static void
 file_uri_serializer (GdkContentSerializer *serializer)
 {
   GFile *file;
@@ -808,6 +866,7 @@ init (void)
   static gboolean initialized = FALSE;
   GSList *formats, *f;
   const char *charset;
+  gboolean has_portal;
 
   if (initialized)
     return;
@@ -863,6 +922,14 @@ init (void)
 
   g_slist_free (formats);
 
+  has_portal = file_transfer_portal_available ();
+
+  if (has_portal)
+    gdk_content_register_serializer (G_TYPE_FILE,
+                                     "application/vnd.portal.files",
+                                     portal_file_serializer,
+                                     NULL,
+                                     NULL);
   gdk_content_register_serializer (G_TYPE_FILE,
                                    "text/uri-list",
                                    file_uri_serializer,
@@ -873,6 +940,12 @@ init (void)
                                    file_text_serializer,
                                    NULL,
                                    NULL);
+  if (has_portal)
+    gdk_content_register_serializer (GDK_TYPE_FILE_LIST,
+                                     "application/vnd.portal.files",
+                                     portal_file_serializer,
+                                     NULL,
+                                     NULL);
   gdk_content_register_serializer (GDK_TYPE_FILE_LIST,
                                    "text/uri-list",
                                    file_uri_serializer,