wayland: Move primary data offers to their own file

Following the MetaWaylandDataOffer split.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1193

(cherry picked from commit 4726f3d5d3)

src/meson.build

@@ -497,6 +497,8 @@ if have_wayland
     'wayland/meta-wayland-data-device.h',
     'wayland/meta-wayland-data-offer.c',
     'wayland/meta-wayland-data-offer.h',
+    'wayland/meta-wayland-data-offer-primary.c',
+    'wayland/meta-wayland-data-offer-primary.h',
     'wayland/meta-wayland-data-source.c',
     'wayland/meta-wayland-data-source.h',
     'wayland/meta-wayland-data-source-primary.c',

src/wayland/meta-wayland-data-device.c

@@ -38,6 +38,7 @@
 #include "compositor/meta-dnd-actor-private.h"
 #include "meta/meta-selection-source-memory.h"
 #include "wayland/meta-selection-source-wayland-private.h"
+#include "wayland/meta-wayland-data-offer-primary.h"
 #include "wayland/meta-wayland-dnd-surface.h"
 #include "wayland/meta-wayland-pointer.h"
 #include "wayland/meta-wayland-private.h"
@@ -64,22 +65,6 @@ unbind_resource (struct wl_resource *resource)
   wl_list_remove (wl_resource_get_link (resource));
 }
 
-static void
-transfer_cb (MetaSelection *selection,
-             GAsyncResult  *res,
-             GOutputStream *stream)
-{
-  GError *error = NULL;
-
-  if (!meta_selection_transfer_finish (selection, res, &error))
-    {
-      g_warning ("Could not fetch selection data: %s", error->message);
-      g_error_free (error);
-    }
-
-  g_output_stream_close (stream, NULL, NULL);
-}
-
 static void
 default_destructor (struct wl_client   *client,
                     struct wl_resource *resource)
@@ -87,64 +72,6 @@ default_destructor (struct wl_client   *client,
   wl_resource_destroy (resource);
 }
 
-static void
-primary_offer_receive (struct wl_client *client, struct wl_resource *resource,
-                       const char *mime_type, int32_t fd)
-{
-  MetaDisplay *display = meta_get_display ();
-  GOutputStream *stream;
-  GList *mime_types;
-  gboolean found;
-
-  mime_types = meta_selection_get_mimetypes (meta_display_get_selection (display),
-                                             META_SELECTION_PRIMARY);
-  found = g_list_find_custom (mime_types, mime_type, (GCompareFunc) g_strcmp0) != NULL;
-  g_list_free_full (mime_types, g_free);
-
-  if (!found)
-    {
-      close (fd);
-      return;
-    }
-
-  stream = g_unix_output_stream_new (fd, TRUE);
-  meta_selection_transfer_async (meta_display_get_selection (display),
-                                 META_SELECTION_PRIMARY,
-                                 mime_type,
-                                 -1,
-                                 stream,
-                                 NULL,
-                                 (GAsyncReadyCallback) transfer_cb,
-                                 stream);
-}
-
-static const struct gtk_primary_selection_offer_interface primary_offer_interface = {
-  primary_offer_receive,
-  default_destructor,
-};
-
-static void
-destroy_primary_offer (struct wl_resource *resource)
-{
-  MetaWaylandDataOffer *offer = wl_resource_get_user_data (resource);
-
-  if (offer->source)
-    {
-      if (offer == meta_wayland_data_source_get_current_offer (offer->source))
-        {
-          meta_wayland_data_source_cancel (offer->source);
-          meta_wayland_data_source_set_current_offer (offer->source, NULL);
-        }
-
-      g_object_remove_weak_pointer (G_OBJECT (offer->source),
-                                    (gpointer *)&offer->source);
-      offer->source = NULL;
-    }
-
-  meta_display_sync_wayland_input_focus (meta_get_display ());
-  g_slice_free (MetaWaylandDataOffer, offer);
-}
-
 static struct wl_resource *
 create_and_send_dnd_offer (MetaWaylandDataSource *source,
                            struct wl_resource *target)
@@ -1296,15 +1223,7 @@ create_and_send_primary_offer (MetaWaylandDataDevice *data_device,
   if (!mimetypes)
     return NULL;
 
-  offer = g_slice_new0 (MetaWaylandDataOffer);
+  offer = meta_wayland_data_offer_primary_new (target);
-  offer->selection_type = META_SELECTION_PRIMARY;
-  offer->resource = wl_resource_create (wl_resource_get_client (target),
-                                        &gtk_primary_selection_offer_interface,
-                                        wl_resource_get_version (target), 0);
-  wl_resource_set_implementation (offer->resource,
-                                  &primary_offer_interface,
-                                  offer,
-                                  destroy_primary_offer);
 
   gtk_primary_selection_device_send_data_offer (target, offer->resource);
 

src/wayland/meta-wayland-data-offer-primary.c

@@ -0,0 +1,138 @@
+/*
+ * Copyright © 2011 Kristian Høgsberg
+ *             2020 Red Hat Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include "config.h"
+
+#include "meta-wayland-data-offer-primary.h"
+
+#include <gio/gunixoutputstream.h>
+#include <glib-unix.h>
+#include <glib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "core/display-private.h"
+#include "gtk-primary-selection-server-protocol.h"
+#include "wayland/meta-wayland-data-offer.h"
+
+static void
+transfer_cb (MetaSelection *selection,
+             GAsyncResult  *res,
+             GOutputStream *stream)
+{
+  GError *error = NULL;
+
+  if (!meta_selection_transfer_finish (selection, res, &error))
+    {
+      g_warning ("Could not fetch selection data: %s", error->message);
+      g_error_free (error);
+    }
+
+  g_output_stream_close (stream, NULL, NULL);
+}
+
+static void
+primary_offer_receive (struct wl_client   *client,
+		       struct wl_resource *resource,
+                       const char         *mime_type,
+		       int32_t             fd)
+{
+  MetaDisplay *display = meta_get_display ();
+  GOutputStream *stream;
+  GList *mime_types;
+  gboolean found;
+
+  mime_types = meta_selection_get_mimetypes (meta_display_get_selection (display),
+                                             META_SELECTION_PRIMARY);
+  found = g_list_find_custom (mime_types, mime_type, (GCompareFunc) g_strcmp0) != NULL;
+  g_list_free_full (mime_types, g_free);
+
+  if (!found)
+    {
+      close (fd);
+      return;
+    }
+
+  stream = g_unix_output_stream_new (fd, TRUE);
+  meta_selection_transfer_async (meta_display_get_selection (display),
+                                 META_SELECTION_PRIMARY,
+                                 mime_type,
+                                 -1,
+                                 stream,
+                                 NULL,
+                                 (GAsyncReadyCallback) transfer_cb,
+                                 stream);
+}
+
+static void
+primary_offer_destroy (struct wl_client   *client,
+                       struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static const struct gtk_primary_selection_offer_interface primary_offer_interface = {
+  primary_offer_receive,
+  primary_offer_destroy,
+};
+
+static void
+destroy_primary_offer (struct wl_resource *resource)
+{
+  MetaWaylandDataOffer *offer = wl_resource_get_user_data (resource);
+
+  if (offer->source)
+    {
+      if (offer == meta_wayland_data_source_get_current_offer (offer->source))
+        {
+          meta_wayland_data_source_cancel (offer->source);
+          meta_wayland_data_source_set_current_offer (offer->source, NULL);
+        }
+
+      g_object_remove_weak_pointer (G_OBJECT (offer->source),
+                                    (gpointer *)&offer->source);
+      offer->source = NULL;
+    }
+
+  meta_display_sync_wayland_input_focus (meta_get_display ());
+  g_slice_free (MetaWaylandDataOffer, offer);
+}
+
+MetaWaylandDataOffer *
+meta_wayland_data_offer_primary_new (struct wl_resource *target)
+{
+  MetaWaylandDataOffer *offer;
+
+  offer = g_slice_new0 (MetaWaylandDataOffer);
+  offer->selection_type = META_SELECTION_PRIMARY;
+  offer->resource = wl_resource_create (wl_resource_get_client (target),
+                                        &gtk_primary_selection_offer_interface,
+                                        wl_resource_get_version (target), 0);
+  wl_resource_set_implementation (offer->resource,
+                                  &primary_offer_interface,
+                                  offer,
+                                  destroy_primary_offer);
+  return offer;
+}

src/wayland/meta-wayland-data-offer-primary.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright © 2011 Kristian Høgsberg
+ *             2020 Red Hat Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef META_WAYLAND_DATA_OFFER_PRIMARY_H
+#define META_WAYLAND_DATA_OFFER_PRIMARY_H
+
+#include "meta-wayland-data-offer.h"
+
+MetaWaylandDataOffer * meta_wayland_data_offer_primary_new (struct wl_resource *target);
+
+#endif /* META_WAYLAND_DATA_OFFER_PRIMARY_H */

src/wayland/meta-wayland-data-offer.h

@@ -24,6 +24,7 @@
 #ifndef META_WAYLAND_DATA_OFFER_H
 #define META_WAYLAND_DATA_OFFER_H
 
+#include "meta/meta-selection.h"
 #include "wayland/meta-wayland-data-source.h"
 
 struct _MetaWaylandDataOffer