From 71f8bab55f7b43da57c23adfeba0145e09426e6c Mon Sep 17 00:00:00 2001
From: Robert Mader <robert.mader@posteo.de>
Date: Fri, 2 Oct 2020 09:13:06 +0000
Subject: [PATCH] Bug 1667674 - [Wayland] Support public primary-selection
 unstable protocol. r=stransky

This is required to support pasting the primary selection into Firefox on compositors only
supporting the public protocol, such as KWin. Getting the selection *from* Firefox is done
via GTK and will be supported from GTK 3.24.23 on.

The public protocol, while practically identical, will replace the gtk-private one eventually.
However, support for the private one will still be needed for a while.

Note: this also updates the auto-generated gtk-primary-selection files.

Differential Revision: https://phabricator.services.mozilla.com/D91594
---
 .clang-format-ignore                          |   2 +
 widget/gtk/nsClipboardWayland.cpp             | 133 +++-
 widget/gtk/nsClipboardWayland.h               |   8 +-
 widget/gtk/nsWaylandDisplay.cpp               |  19 +-
 widget/gtk/nsWaylandDisplay.h                 |  22 +-
 .../gtk-primary-selection-client-protocol.h   |   2 +-
 .../wayland/gtk-primary-selection-protocol.c  |  53 +-
 widget/gtk/wayland/moz.build                  |   4 +-
 ...ry-selection-unstable-v1-client-protocol.h | 578 ++++++++++++++++++
 .../primary-selection-unstable-v1-protocol.c  | 116 ++++
 10 files changed, 880 insertions(+), 57 deletions(-)
 create mode 100644 widget/gtk/wayland/primary-selection-unstable-v1-client-protocol.h
 create mode 100644 widget/gtk/wayland/primary-selection-unstable-v1-protocol.c

diff --git a/.clang-format-ignore b/.clang-format-ignore
index be50d9ddb73f1..bcc0d531b9b42 100644
--- a/.clang-format-ignore
+++ b/.clang-format-ignore
@@ -42,6 +42,8 @@ media/mp4parse-rust/mp4parse.h
 security/manager/ssl/StaticHPKPins.h
 widget/gtk/wayland/gtk-primary-selection-client-protocol.h
 widget/gtk/wayland/gtk-primary-selection-protocol.c
+widget/gtk/wayland/primary-selection-unstable-v1-client-protocol.h
+widget/gtk/wayland/primary-selection-unstable-v1-protocol.c
 
 # Ignored because these files are used to generate a windows.h STL wrapper,
 # and reformatting them can break generating that wrapper.
diff --git a/widget/gtk/nsClipboardWayland.cpp b/widget/gtk/nsClipboardWayland.cpp
index 48a8c90257240..f8e1031e9eea8 100644
--- a/widget/gtk/nsClipboardWayland.cpp
+++ b/widget/gtk/nsClipboardWayland.cpp
@@ -314,15 +314,27 @@ WaylandDataOffer::~WaylandDataOffer(void) {
 }
 
 bool PrimaryDataOffer::RequestDataTransfer(const char* aMimeType, int fd) {
-  if (mPrimaryDataOffer) {
-    gtk_primary_selection_offer_receive(mPrimaryDataOffer, aMimeType, fd);
+  if (mPrimaryDataOfferGtk) {
+    gtk_primary_selection_offer_receive(mPrimaryDataOfferGtk, aMimeType, fd);
+    return true;
+  }
+  if (mPrimaryDataOfferZwpV1) {
+    zwp_primary_selection_offer_v1_receive(mPrimaryDataOfferZwpV1, aMimeType,
+                                           fd);
     return true;
   }
   return false;
 }
 
 static void primary_data_offer(
-    void* data, gtk_primary_selection_offer* gtk_primary_selection_offer,
+    void* data, gtk_primary_selection_offer* primary_selection_offer,
+    const char* mime_type) {
+  auto* offer = static_cast<DataOffer*>(data);
+  offer->AddMIMEType(mime_type);
+}
+
+static void primary_data_offer(
+    void* data, zwp_primary_selection_offer_v1* primary_selection_offer,
     const char* mime_type) {
   auto* offer = static_cast<DataOffer*>(data);
   offer->AddMIMEType(mime_type);
@@ -334,18 +346,31 @@ static void primary_data_offer(
  *                      gtk_primary_selection_offer.
  */
 static const struct gtk_primary_selection_offer_listener
-    primary_selection_offer_listener = {primary_data_offer};
+    primary_selection_offer_listener_gtk = {primary_data_offer};
+
+static const struct zwp_primary_selection_offer_v1_listener
+    primary_selection_offer_listener_zwp_v1 = {primary_data_offer};
 
 PrimaryDataOffer::PrimaryDataOffer(
     gtk_primary_selection_offer* aPrimaryDataOffer)
-    : mPrimaryDataOffer(aPrimaryDataOffer) {
+    : mPrimaryDataOfferGtk(aPrimaryDataOffer), mPrimaryDataOfferZwpV1(nullptr) {
   gtk_primary_selection_offer_add_listener(
-      aPrimaryDataOffer, &primary_selection_offer_listener, this);
+      aPrimaryDataOffer, &primary_selection_offer_listener_gtk, this);
+}
+
+PrimaryDataOffer::PrimaryDataOffer(
+    zwp_primary_selection_offer_v1* aPrimaryDataOffer)
+    : mPrimaryDataOfferGtk(nullptr), mPrimaryDataOfferZwpV1(aPrimaryDataOffer) {
+  zwp_primary_selection_offer_v1_add_listener(
+      aPrimaryDataOffer, &primary_selection_offer_listener_zwp_v1, this);
 }
 
 PrimaryDataOffer::~PrimaryDataOffer(void) {
-  if (mPrimaryDataOffer) {
-    gtk_primary_selection_offer_destroy(mPrimaryDataOffer);
+  if (mPrimaryDataOfferGtk) {
+    gtk_primary_selection_offer_destroy(mPrimaryDataOfferGtk);
+  }
+  if (mPrimaryDataOfferZwpV1) {
+    zwp_primary_selection_offer_v1_destroy(mPrimaryDataOfferZwpV1);
   }
 }
 
@@ -444,6 +469,20 @@ void nsRetrievalContextWayland::RegisterNewDataOffer(
   }
 }
 
+void nsRetrievalContextWayland::RegisterNewDataOffer(
+    zwp_primary_selection_offer_v1* aPrimaryDataOffer) {
+  DataOffer* dataOffer = static_cast<DataOffer*>(
+      g_hash_table_lookup(mActiveOffers, aPrimaryDataOffer));
+  MOZ_ASSERT(
+      dataOffer == nullptr,
+      "Registered PrimaryDataOffer already exists. Wayland protocol error?");
+
+  if (!dataOffer) {
+    dataOffer = new PrimaryDataOffer(aPrimaryDataOffer);
+    g_hash_table_insert(mActiveOffers, aPrimaryDataOffer, dataOffer);
+  }
+}
+
 void nsRetrievalContextWayland::SetClipboardDataOffer(
     wl_data_offer* aWaylandDataOffer) {
   // Delete existing clipboard data offer
@@ -480,6 +519,24 @@ void nsRetrievalContextWayland::SetPrimaryDataOffer(
   }
 }
 
+void nsRetrievalContextWayland::SetPrimaryDataOffer(
+    zwp_primary_selection_offer_v1* aPrimaryDataOffer) {
+  // Release any primary offer we have.
+  mPrimaryOffer = nullptr;
+
+  // aPrimaryDataOffer can be null which means we lost
+  // the mouse selection.
+  if (aPrimaryDataOffer) {
+    DataOffer* dataOffer = static_cast<DataOffer*>(
+        g_hash_table_lookup(mActiveOffers, aPrimaryDataOffer));
+    NS_ASSERTION(dataOffer, "We're missing primary data offer!");
+    if (dataOffer) {
+      g_hash_table_remove(mActiveOffers, aPrimaryDataOffer);
+      mPrimaryOffer = WrapUnique(dataOffer);
+    }
+  }
+}
+
 void nsRetrievalContextWayland::AddDragAndDropDataOffer(
     wl_data_offer* aDropDataOffer) {
   // Remove any existing D&D contexts.
@@ -615,25 +672,44 @@ static const struct wl_data_device_listener data_device_listener = {
     data_device_data_offer, data_device_enter, data_device_leave,
     data_device_motion,     data_device_drop,  data_device_selection};
 
+static void primary_selection_data_offer(
+    void* data, struct gtk_primary_selection_device* primary_selection_device,
+    struct gtk_primary_selection_offer* primary_offer) {
+  LOGCLIP(("primary_selection_data_offer() callback\n"));
+  // create and add listener
+  nsRetrievalContextWayland* context =
+      static_cast<nsRetrievalContextWayland*>(data);
+  context->RegisterNewDataOffer(primary_offer);
+}
+
 static void primary_selection_data_offer(
     void* data,
-    struct gtk_primary_selection_device* gtk_primary_selection_device,
-    struct gtk_primary_selection_offer* gtk_primary_offer) {
+    struct zwp_primary_selection_device_v1* primary_selection_device,
+    struct zwp_primary_selection_offer_v1* primary_offer) {
   LOGCLIP(("primary_selection_data_offer() callback\n"));
   // create and add listener
   nsRetrievalContextWayland* context =
       static_cast<nsRetrievalContextWayland*>(data);
-  context->RegisterNewDataOffer(gtk_primary_offer);
+  context->RegisterNewDataOffer(primary_offer);
+}
+
+static void primary_selection_selection(
+    void* data, struct gtk_primary_selection_device* primary_selection_device,
+    struct gtk_primary_selection_offer* primary_offer) {
+  LOGCLIP(("primary_selection_selection() callback\n"));
+  nsRetrievalContextWayland* context =
+      static_cast<nsRetrievalContextWayland*>(data);
+  context->SetPrimaryDataOffer(primary_offer);
 }
 
 static void primary_selection_selection(
     void* data,
-    struct gtk_primary_selection_device* gtk_primary_selection_device,
-    struct gtk_primary_selection_offer* gtk_primary_offer) {
+    struct zwp_primary_selection_device_v1* primary_selection_device,
+    struct zwp_primary_selection_offer_v1* primary_offer) {
   LOGCLIP(("primary_selection_selection() callback\n"));
   nsRetrievalContextWayland* context =
       static_cast<nsRetrievalContextWayland*>(data);
-  context->SetPrimaryDataOffer(gtk_primary_offer);
+  context->SetPrimaryDataOffer(primary_offer);
 }
 
 /* gtk_primary_selection_device callback description:
@@ -650,13 +726,20 @@ static void primary_selection_selection(
  *                          there's no primary selection.
  */
 static const struct gtk_primary_selection_device_listener
-    primary_selection_device_listener = {
+    primary_selection_device_listener_gtk = {
+        primary_selection_data_offer,
+        primary_selection_selection,
+};
+
+static const struct zwp_primary_selection_device_v1_listener
+    primary_selection_device_listener_zwp_v1 = {
         primary_selection_data_offer,
         primary_selection_selection,
 };
 
 bool nsRetrievalContextWayland::HasSelectionSupport(void) {
-  return mDisplay->GetPrimarySelectionDeviceManager() != nullptr;
+  return (mDisplay->GetPrimarySelectionDeviceManagerZwpV1() != nullptr ||
+          mDisplay->GetPrimarySelectionDeviceManagerGtk() != nullptr);
 }
 
 nsRetrievalContextWayland::nsRetrievalContextWayland(void)
@@ -673,14 +756,20 @@ nsRetrievalContextWayland::nsRetrievalContextWayland(void)
       mDisplay->GetDataDeviceManager(), mDisplay->GetSeat());
   wl_data_device_add_listener(dataDevice, &data_device_listener, this);
 
-  gtk_primary_selection_device_manager* manager =
-      mDisplay->GetPrimarySelectionDeviceManager();
-  if (manager) {
+  if (mDisplay->GetPrimarySelectionDeviceManagerZwpV1()) {
+    zwp_primary_selection_device_v1* primaryDataDevice =
+        zwp_primary_selection_device_manager_v1_get_device(
+            mDisplay->GetPrimarySelectionDeviceManagerZwpV1(),
+            mDisplay->GetSeat());
+    zwp_primary_selection_device_v1_add_listener(
+        primaryDataDevice, &primary_selection_device_listener_zwp_v1, this);
+  } else if (mDisplay->GetPrimarySelectionDeviceManagerGtk()) {
     gtk_primary_selection_device* primaryDataDevice =
-        gtk_primary_selection_device_manager_get_device(manager,
-                                                        mDisplay->GetSeat());
+        gtk_primary_selection_device_manager_get_device(
+            mDisplay->GetPrimarySelectionDeviceManagerGtk(),
+            mDisplay->GetSeat());
     gtk_primary_selection_device_add_listener(
-        primaryDataDevice, &primary_selection_device_listener, this);
+        primaryDataDevice, &primary_selection_device_listener_gtk, this);
   }
 
   mInitialized = true;
diff --git a/widget/gtk/nsClipboardWayland.h b/widget/gtk/nsClipboardWayland.h
index 6a1b6c715d73f..ddf5d40dc6dce 100644
--- a/widget/gtk/nsClipboardWayland.h
+++ b/widget/gtk/nsClipboardWayland.h
@@ -15,8 +15,6 @@
 #include "mozilla/UniquePtr.h"
 #include "nsClipboard.h"
 #include "nsWaylandDisplay.h"
-#include "mozwayland/mozwayland.h"
-#include "wayland/gtk-primary-selection-client-protocol.h"
 
 struct FastTrackClipboard;
 
@@ -69,6 +67,7 @@ class WaylandDataOffer : public DataOffer {
 class PrimaryDataOffer : public DataOffer {
  public:
   explicit PrimaryDataOffer(gtk_primary_selection_offer* aPrimaryDataOffer);
+  explicit PrimaryDataOffer(zwp_primary_selection_offer_v1* aPrimaryDataOffer);
   void SetAvailableDragActions(uint32_t aWaylandActions){};
 
   virtual ~PrimaryDataOffer();
@@ -76,7 +75,8 @@ class PrimaryDataOffer : public DataOffer {
  private:
   bool RequestDataTransfer(const char* aMimeType, int fd) override;
 
-  gtk_primary_selection_offer* mPrimaryDataOffer;
+  gtk_primary_selection_offer* mPrimaryDataOfferGtk;
+  zwp_primary_selection_offer_v1* mPrimaryDataOfferZwpV1;
 };
 
 class nsWaylandDragContext : public nsISupports {
@@ -124,9 +124,11 @@ class nsRetrievalContextWayland : public nsRetrievalContext {
 
   void RegisterNewDataOffer(wl_data_offer* aWaylandDataOffer);
   void RegisterNewDataOffer(gtk_primary_selection_offer* aPrimaryDataOffer);
+  void RegisterNewDataOffer(zwp_primary_selection_offer_v1* aPrimaryDataOffer);
 
   void SetClipboardDataOffer(wl_data_offer* aWaylandDataOffer);
   void SetPrimaryDataOffer(gtk_primary_selection_offer* aPrimaryDataOffer);
+  void SetPrimaryDataOffer(zwp_primary_selection_offer_v1* aPrimaryDataOffer);
   void AddDragAndDropDataOffer(wl_data_offer* aWaylandDataOffer);
   nsWaylandDragContext* GetDragContext();
 
diff --git a/widget/gtk/nsWaylandDisplay.cpp b/widget/gtk/nsWaylandDisplay.cpp
index 9a4cbb983fd49..69fb6b470e7ff 100644
--- a/widget/gtk/nsWaylandDisplay.cpp
+++ b/widget/gtk/nsWaylandDisplay.cpp
@@ -127,7 +127,12 @@ void nsWaylandDisplay::SetSeat(wl_seat* aSeat) { mSeat = aSeat; }
 
 void nsWaylandDisplay::SetPrimarySelectionDeviceManager(
     gtk_primary_selection_device_manager* aPrimarySelectionDeviceManager) {
-  mPrimarySelectionDeviceManager = aPrimarySelectionDeviceManager;
+  mPrimarySelectionDeviceManagerGtk = aPrimarySelectionDeviceManager;
+}
+
+void nsWaylandDisplay::SetPrimarySelectionDeviceManager(
+    zwp_primary_selection_device_manager_v1* aPrimarySelectionDeviceManager) {
+  mPrimarySelectionDeviceManagerZwpV1 = aPrimarySelectionDeviceManager;
 }
 
 void nsWaylandDisplay::SetIdleInhibitManager(
@@ -167,6 +172,15 @@ static void global_registry_handler(void* data, wl_registry* registry,
     wl_proxy_set_queue((struct wl_proxy*)primary_selection_device_manager,
                        display->GetEventQueue());
     display->SetPrimarySelectionDeviceManager(primary_selection_device_manager);
+  } else if (strcmp(interface, "zwp_primary_selection_device_manager_v1") ==
+             0) {
+    auto* primary_selection_device_manager =
+        WaylandRegistryBind<gtk_primary_selection_device_manager>(
+            registry, id, &zwp_primary_selection_device_manager_v1_interface,
+            1);
+    wl_proxy_set_queue((struct wl_proxy*)primary_selection_device_manager,
+                       display->GetEventQueue());
+    display->SetPrimarySelectionDeviceManager(primary_selection_device_manager);
   } else if (strcmp(interface, "zwp_idle_inhibit_manager_v1") == 0) {
     auto* idle_inhibit_manager =
         WaylandRegistryBind<zwp_idle_inhibit_manager_v1>(
@@ -284,7 +298,8 @@ nsWaylandDisplay::nsWaylandDisplay(wl_display* aDisplay, bool aLighWrapper)
       mSeat(nullptr),
       mShm(nullptr),
       mSyncCallback(nullptr),
-      mPrimarySelectionDeviceManager(nullptr),
+      mPrimarySelectionDeviceManagerGtk(nullptr),
+      mPrimarySelectionDeviceManagerZwpV1(nullptr),
       mIdleInhibitManager(nullptr),
       mRegistry(nullptr),
       mExplicitSync(false) {
diff --git a/widget/gtk/nsWaylandDisplay.h b/widget/gtk/nsWaylandDisplay.h
index ffec6737877b0..f3d1d1243bcf9 100644
--- a/widget/gtk/nsWaylandDisplay.h
+++ b/widget/gtk/nsWaylandDisplay.h
@@ -8,16 +8,16 @@
 #ifndef __MOZ_WAYLAND_DISPLAY_H__
 #define __MOZ_WAYLAND_DISPLAY_H__
 
-#include "mozilla/widget/mozwayland.h"
-#include "mozilla/widget/gtk-primary-selection-client-protocol.h"
-#include "mozilla/widget/idle-inhibit-unstable-v1-client-protocol.h"
-
 #include "base/message_loop.h"  // for MessageLoop
 #include "base/task.h"          // for NewRunnableMethod, etc
 #include "mozilla/StaticMutex.h"
 
+#include "mozilla/widget/mozwayland.h"
 #include "mozilla/widget/gbm.h"
+#include "mozilla/widget/gtk-primary-selection-client-protocol.h"
+#include "mozilla/widget/idle-inhibit-unstable-v1-client-protocol.h"
 #include "mozilla/widget/linux-dmabuf-unstable-v1-client-protocol.h"
+#include "mozilla/widget/primary-selection-unstable-v1-client-protocol.h"
 
 namespace mozilla {
 namespace widget {
@@ -51,8 +51,13 @@ class nsWaylandDisplay {
   };
   wl_seat* GetSeat(void) { return mSeat; };
   wl_shm* GetShm(void) { return mShm; };
-  gtk_primary_selection_device_manager* GetPrimarySelectionDeviceManager(void) {
-    return mPrimarySelectionDeviceManager;
+  gtk_primary_selection_device_manager* GetPrimarySelectionDeviceManagerGtk(
+      void) {
+    return mPrimarySelectionDeviceManagerGtk;
+  };
+  zwp_primary_selection_device_manager_v1*
+  GetPrimarySelectionDeviceManagerZwpV1(void) {
+    return mPrimarySelectionDeviceManagerZwpV1;
   };
   zwp_idle_inhibit_manager_v1* GetIdleInhibitManager(void) {
     return mIdleInhibitManager;
@@ -67,6 +72,8 @@ class nsWaylandDisplay {
   void SetSeat(wl_seat* aSeat);
   void SetPrimarySelectionDeviceManager(
       gtk_primary_selection_device_manager* aPrimarySelectionDeviceManager);
+  void SetPrimarySelectionDeviceManager(
+      zwp_primary_selection_device_manager_v1* aPrimarySelectionDeviceManager);
   void SetIdleInhibitManager(zwp_idle_inhibit_manager_v1* aIdleInhibitManager);
 
   MessageLoop* GetThreadLoop() { return mThreadLoop; }
@@ -87,7 +94,8 @@ class nsWaylandDisplay {
   wl_seat* mSeat;
   wl_shm* mShm;
   wl_callback* mSyncCallback;
-  gtk_primary_selection_device_manager* mPrimarySelectionDeviceManager;
+  gtk_primary_selection_device_manager* mPrimarySelectionDeviceManagerGtk;
+  zwp_primary_selection_device_manager_v1* mPrimarySelectionDeviceManagerZwpV1;
   zwp_idle_inhibit_manager_v1* mIdleInhibitManager;
   wl_registry* mRegistry;
   bool mExplicitSync;
diff --git a/widget/gtk/wayland/gtk-primary-selection-client-protocol.h b/widget/gtk/wayland/gtk-primary-selection-client-protocol.h
index 8450512d2c032..770c35e03f058 100644
--- a/widget/gtk/wayland/gtk-primary-selection-client-protocol.h
+++ b/widget/gtk/wayland/gtk-primary-selection-client-protocol.h
@@ -1,4 +1,4 @@
-/* Generated by wayland-scanner 1.14.0 */
+/* Generated by wayland-scanner 1.18.0 */
 
 #ifndef GTK_PRIMARY_SELECTION_CLIENT_PROTOCOL_H
 #define GTK_PRIMARY_SELECTION_CLIENT_PROTOCOL_H
diff --git a/widget/gtk/wayland/gtk-primary-selection-protocol.c b/widget/gtk/wayland/gtk-primary-selection-protocol.c
index 4f4ccca999144..b42176753ca00 100644
--- a/widget/gtk/wayland/gtk-primary-selection-protocol.c
+++ b/widget/gtk/wayland/gtk-primary-selection-protocol.c
@@ -1,4 +1,4 @@
-/* Generated by wayland-scanner 1.14.0 */
+/* Generated by wayland-scanner 1.18.0 */
 
 /*
  * Copyright © 2015, 2016 Red Hat
@@ -25,15 +25,25 @@
 
 #include <stdlib.h>
 #include <stdint.h>
-#include <gtk/gtk.h>
 #include <gdk/gdkwayland.h>
 #include "wayland-util.h"
 
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
 extern const struct wl_interface gtk_primary_selection_device_interface;
 extern const struct wl_interface gtk_primary_selection_offer_interface;
 extern const struct wl_interface gtk_primary_selection_source_interface;
+extern const struct wl_interface wl_seat_interface;
 
-static const struct wl_interface *types[] = {
+static const struct wl_interface *gtk_primary_selection_types[] = {
 	NULL,
 	NULL,
 	&gtk_primary_selection_source_interface,
@@ -46,60 +56,61 @@ static const struct wl_interface *types[] = {
 };
 
 static const struct wl_message gtk_primary_selection_device_manager_requests[] = {
-	{ "create_source", "n", types + 2 },
-	{ "get_device", "no", types + 3 },
-	{ "destroy", "", types + 0 },
+	{ "create_source", "n", gtk_primary_selection_types + 2 },
+	{ "get_device", "no", gtk_primary_selection_types + 3 },
+	{ "destroy", "", gtk_primary_selection_types + 0 },
 };
 
-const struct wl_interface gtk_primary_selection_device_manager_interface = {
+WL_PRIVATE const struct wl_interface gtk_primary_selection_device_manager_interface = {
 	"gtk_primary_selection_device_manager", 1,
 	3, gtk_primary_selection_device_manager_requests,
 	0, NULL,
 };
 
 static const struct wl_message gtk_primary_selection_device_requests[] = {
-	{ "set_selection", "?ou", types + 5 },
-	{ "destroy", "", types + 0 },
+	{ "set_selection", "?ou", gtk_primary_selection_types + 5 },
+	{ "destroy", "", gtk_primary_selection_types + 0 },
 };
 
 static const struct wl_message gtk_primary_selection_device_events[] = {
-	{ "data_offer", "n", types + 7 },
-	{ "selection", "?o", types + 8 },
+	{ "data_offer", "n", gtk_primary_selection_types + 7 },
+	{ "selection", "?o", gtk_primary_selection_types + 8 },
 };
 
-const struct wl_interface gtk_primary_selection_device_interface = {
+WL_PRIVATE const struct wl_interface gtk_primary_selection_device_interface = {
 	"gtk_primary_selection_device", 1,
 	2, gtk_primary_selection_device_requests,
 	2, gtk_primary_selection_device_events,
 };
 
 static const struct wl_message gtk_primary_selection_offer_requests[] = {
-	{ "receive", "sh", types + 0 },
-	{ "destroy", "", types + 0 },
+	{ "receive", "sh", gtk_primary_selection_types + 0 },
+	{ "destroy", "", gtk_primary_selection_types + 0 },
 };
 
 static const struct wl_message gtk_primary_selection_offer_events[] = {
-	{ "offer", "s", types + 0 },
+	{ "offer", "s", gtk_primary_selection_types + 0 },
 };
 
-const struct wl_interface gtk_primary_selection_offer_interface = {
+WL_PRIVATE const struct wl_interface gtk_primary_selection_offer_interface = {
 	"gtk_primary_selection_offer", 1,
 	2, gtk_primary_selection_offer_requests,
 	1, gtk_primary_selection_offer_events,
 };
 
 static const struct wl_message gtk_primary_selection_source_requests[] = {
-	{ "offer", "s", types + 0 },
-	{ "destroy", "", types + 0 },
+	{ "offer", "s", gtk_primary_selection_types + 0 },
+	{ "destroy", "", gtk_primary_selection_types + 0 },
 };
 
 static const struct wl_message gtk_primary_selection_source_events[] = {
-	{ "send", "sh", types + 0 },
-	{ "cancelled", "", types + 0 },
+	{ "send", "sh", gtk_primary_selection_types + 0 },
+	{ "cancelled", "", gtk_primary_selection_types + 0 },
 };
 
-const struct wl_interface gtk_primary_selection_source_interface = {
+WL_PRIVATE const struct wl_interface gtk_primary_selection_source_interface = {
 	"gtk_primary_selection_source", 1,
 	2, gtk_primary_selection_source_requests,
 	2, gtk_primary_selection_source_events,
 };
+
diff --git a/widget/gtk/wayland/moz.build b/widget/gtk/wayland/moz.build
index 0de7427c15aad..63646de736126 100644
--- a/widget/gtk/wayland/moz.build
+++ b/widget/gtk/wayland/moz.build
@@ -10,7 +10,8 @@ with Files("**"):
 SOURCES += [
     'gtk-primary-selection-protocol.c',
     'idle-inhibit-unstable-v1-protocol.c',
-    'linux-dmabuf-unstable-v1-protocol.c'
+    'linux-dmabuf-unstable-v1-protocol.c',
+    'primary-selection-unstable-v1-protocol.c'
 ]
 
 EXPORTS.mozilla.widget += [
@@ -18,6 +19,7 @@ EXPORTS.mozilla.widget += [
     'gtk-primary-selection-client-protocol.h',
     'idle-inhibit-unstable-v1-client-protocol.h',
     'linux-dmabuf-unstable-v1-client-protocol.h',
+    'primary-selection-unstable-v1-client-protocol.h',
     'va_drmcommon.h'
 ]
 
diff --git a/widget/gtk/wayland/primary-selection-unstable-v1-client-protocol.h b/widget/gtk/wayland/primary-selection-unstable-v1-client-protocol.h
new file mode 100644
index 0000000000000..998266c3dbd9b
--- /dev/null
+++ b/widget/gtk/wayland/primary-selection-unstable-v1-client-protocol.h
@@ -0,0 +1,578 @@
+/* Generated by wayland-scanner 1.18.0 */
+
+#ifndef WP_PRIMARY_SELECTION_UNSTABLE_V1_CLIENT_PROTOCOL_H
+#define WP_PRIMARY_SELECTION_UNSTABLE_V1_CLIENT_PROTOCOL_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-client.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @page page_wp_primary_selection_unstable_v1 The wp_primary_selection_unstable_v1 protocol
+ * Primary selection protocol
+ *
+ * @section page_desc_wp_primary_selection_unstable_v1 Description
+ *
+ * This protocol provides the ability to have a primary selection device to
+ * match that of the X server. This primary selection is a shortcut to the
+ * common clipboard selection, where text just needs to be selected in order
+ * to allow copying it elsewhere. The de facto way to perform this action
+ * is the middle mouse button, although it is not limited to this one.
+ *
+ * Clients wishing to honor primary selection should create a primary
+ * selection source and set it as the selection through
+ * wp_primary_selection_device.set_selection whenever the text selection
+ * changes. In order to minimize calls in pointer-driven text selection,
+ * it should happen only once after the operation finished. Similarly,
+ * a NULL source should be set when text is unselected.
+ *
+ * wp_primary_selection_offer objects are first announced through the
+ * wp_primary_selection_device.data_offer event. Immediately after this event,
+ * the primary data offer will emit wp_primary_selection_offer.offer events
+ * to let know of the mime types being offered.
+ *
+ * When the primary selection changes, the client with the keyboard focus
+ * will receive wp_primary_selection_device.selection events. Only the client
+ * with the keyboard focus will receive such events with a non-NULL
+ * wp_primary_selection_offer. Across keyboard focus changes, previously
+ * focused clients will receive wp_primary_selection_device.events with a
+ * NULL wp_primary_selection_offer.
+ *
+ * In order to request the primary selection data, the client must pass
+ * a recent serial pertaining to the press event that is triggering the
+ * operation, if the compositor deems the serial valid and recent, the
+ * wp_primary_selection_source.send event will happen in the other end
+ * to let the transfer begin. The client owning the primary selection
+ * should write the requested data, and close the file descriptor
+ * immediately.
+ *
+ * If the primary selection owner client disappeared during the transfer,
+ * the client reading the data will receive a
+ * wp_primary_selection_device.selection event with a NULL
+ * wp_primary_selection_offer, the client should take this as a hint
+ * to finish the reads related to the no longer existing offer.
+ *
+ * The primary selection owner should be checking for errors during
+ * writes, merely cancelling the ongoing transfer if any happened.
+ *
+ * @section page_ifaces_wp_primary_selection_unstable_v1 Interfaces
+ * - @subpage page_iface_zwp_primary_selection_device_manager_v1 - X primary selection emulation
+ * - @subpage page_iface_zwp_primary_selection_device_v1 -
+ * - @subpage page_iface_zwp_primary_selection_offer_v1 - offer to transfer primary selection contents
+ * - @subpage page_iface_zwp_primary_selection_source_v1 - offer to replace the contents of the primary selection
+ * @section page_copyright_wp_primary_selection_unstable_v1 Copyright
+ * <pre>
+ *
+ * Copyright © 2015, 2016 Red Hat
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * </pre>
+ */
+struct wl_seat;
+struct zwp_primary_selection_device_manager_v1;
+struct zwp_primary_selection_device_v1;
+struct zwp_primary_selection_offer_v1;
+struct zwp_primary_selection_source_v1;
+
+/**
+ * @page page_iface_zwp_primary_selection_device_manager_v1 zwp_primary_selection_device_manager_v1
+ * @section page_iface_zwp_primary_selection_device_manager_v1_desc Description
+ *
+ * The primary selection device manager is a singleton global object that
+ * provides access to the primary selection. It allows to create
+ * wp_primary_selection_source objects, as well as retrieving the per-seat
+ * wp_primary_selection_device objects.
+ * @section page_iface_zwp_primary_selection_device_manager_v1_api API
+ * See @ref iface_zwp_primary_selection_device_manager_v1.
+ */
+/**
+ * @defgroup iface_zwp_primary_selection_device_manager_v1 The zwp_primary_selection_device_manager_v1 interface
+ *
+ * The primary selection device manager is a singleton global object that
+ * provides access to the primary selection. It allows to create
+ * wp_primary_selection_source objects, as well as retrieving the per-seat
+ * wp_primary_selection_device objects.
+ */
+extern const struct wl_interface zwp_primary_selection_device_manager_v1_interface;
+/**
+ * @page page_iface_zwp_primary_selection_device_v1 zwp_primary_selection_device_v1
+ * @section page_iface_zwp_primary_selection_device_v1_api API
+ * See @ref iface_zwp_primary_selection_device_v1.
+ */
+/**
+ * @defgroup iface_zwp_primary_selection_device_v1 The zwp_primary_selection_device_v1 interface
+ */
+extern const struct wl_interface zwp_primary_selection_device_v1_interface;
+/**
+ * @page page_iface_zwp_primary_selection_offer_v1 zwp_primary_selection_offer_v1
+ * @section page_iface_zwp_primary_selection_offer_v1_desc Description
+ *
+ * A wp_primary_selection_offer represents an offer to transfer the contents
+ * of the primary selection clipboard to the client. Similar to
+ * wl_data_offer, the offer also describes the mime types that the data can
+ * be converted to and provides the mechanisms for transferring the data
+ * directly to the client.
+ * @section page_iface_zwp_primary_selection_offer_v1_api API
+ * See @ref iface_zwp_primary_selection_offer_v1.
+ */
+/**
+ * @defgroup iface_zwp_primary_selection_offer_v1 The zwp_primary_selection_offer_v1 interface
+ *
+ * A wp_primary_selection_offer represents an offer to transfer the contents
+ * of the primary selection clipboard to the client. Similar to
+ * wl_data_offer, the offer also describes the mime types that the data can
+ * be converted to and provides the mechanisms for transferring the data
+ * directly to the client.
+ */
+extern const struct wl_interface zwp_primary_selection_offer_v1_interface;
+/**
+ * @page page_iface_zwp_primary_selection_source_v1 zwp_primary_selection_source_v1
+ * @section page_iface_zwp_primary_selection_source_v1_desc Description
+ *
+ * The source side of a wp_primary_selection_offer, it provides a way to
+ * describe the offered data and respond to requests to transfer the
+ * requested contents of the primary selection clipboard.
+ * @section page_iface_zwp_primary_selection_source_v1_api API
+ * See @ref iface_zwp_primary_selection_source_v1.
+ */
+/**
+ * @defgroup iface_zwp_primary_selection_source_v1 The zwp_primary_selection_source_v1 interface
+ *
+ * The source side of a wp_primary_selection_offer, it provides a way to
+ * describe the offered data and respond to requests to transfer the
+ * requested contents of the primary selection clipboard.
+ */
+extern const struct wl_interface zwp_primary_selection_source_v1_interface;
+
+#define ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_CREATE_SOURCE 0
+#define ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_GET_DEVICE 1
+#define ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_DESTROY 2
+
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_manager_v1
+ */
+#define ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_CREATE_SOURCE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_primary_selection_device_manager_v1
+ */
+#define ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_GET_DEVICE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_primary_selection_device_manager_v1
+ */
+#define ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_primary_selection_device_manager_v1 */
+static inline void
+zwp_primary_selection_device_manager_v1_set_user_data(struct zwp_primary_selection_device_manager_v1 *zwp_primary_selection_device_manager_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_primary_selection_device_manager_v1, user_data);
+}
+
+/** @ingroup iface_zwp_primary_selection_device_manager_v1 */
+static inline void *
+zwp_primary_selection_device_manager_v1_get_user_data(struct zwp_primary_selection_device_manager_v1 *zwp_primary_selection_device_manager_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_primary_selection_device_manager_v1);
+}
+
+static inline uint32_t
+zwp_primary_selection_device_manager_v1_get_version(struct zwp_primary_selection_device_manager_v1 *zwp_primary_selection_device_manager_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_primary_selection_device_manager_v1);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_manager_v1
+ *
+ * Create a new primary selection source.
+ */
+static inline struct zwp_primary_selection_source_v1 *
+zwp_primary_selection_device_manager_v1_create_source(struct zwp_primary_selection_device_manager_v1 *zwp_primary_selection_device_manager_v1)
+{
+	struct wl_proxy *id;
+
+	id = wl_proxy_marshal_constructor((struct wl_proxy *) zwp_primary_selection_device_manager_v1,
+			 ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_CREATE_SOURCE, &zwp_primary_selection_source_v1_interface, NULL);
+
+	return (struct zwp_primary_selection_source_v1 *) id;
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_manager_v1
+ *
+ * Create a new data device for a given seat.
+ */
+static inline struct zwp_primary_selection_device_v1 *
+zwp_primary_selection_device_manager_v1_get_device(struct zwp_primary_selection_device_manager_v1 *zwp_primary_selection_device_manager_v1, struct wl_seat *seat)
+{
+	struct wl_proxy *id;
+
+	id = wl_proxy_marshal_constructor((struct wl_proxy *) zwp_primary_selection_device_manager_v1,
+			 ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_GET_DEVICE, &zwp_primary_selection_device_v1_interface, NULL, seat);
+
+	return (struct zwp_primary_selection_device_v1 *) id;
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_manager_v1
+ *
+ * Destroy the primary selection device manager.
+ */
+static inline void
+zwp_primary_selection_device_manager_v1_destroy(struct zwp_primary_selection_device_manager_v1 *zwp_primary_selection_device_manager_v1)
+{
+	wl_proxy_marshal((struct wl_proxy *) zwp_primary_selection_device_manager_v1,
+			 ZWP_PRIMARY_SELECTION_DEVICE_MANAGER_V1_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) zwp_primary_selection_device_manager_v1);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_v1
+ * @struct zwp_primary_selection_device_v1_listener
+ */
+struct zwp_primary_selection_device_v1_listener {
+	/**
+	 * introduce a new wp_primary_selection_offer
+	 *
+	 * Introduces a new wp_primary_selection_offer object that may be
+	 * used to receive the current primary selection. Immediately
+	 * following this event, the new wp_primary_selection_offer object
+	 * will send wp_primary_selection_offer.offer events to describe
+	 * the offered mime types.
+	 */
+	void (*data_offer)(void *data,
+			   struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1,
+			   struct zwp_primary_selection_offer_v1 *offer);
+	/**
+	 * advertise a new primary selection
+	 *
+	 * The wp_primary_selection_device.selection event is sent to
+	 * notify the client of a new primary selection. This event is sent
+	 * after the wp_primary_selection.data_offer event introducing this
+	 * object, and after the offer has announced its mimetypes through
+	 * wp_primary_selection_offer.offer.
+	 *
+	 * The data_offer is valid until a new offer or NULL is received or
+	 * until the client loses keyboard focus. The client must destroy
+	 * the previous selection data_offer, if any, upon receiving this
+	 * event.
+	 */
+	void (*selection)(void *data,
+			  struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1,
+			  struct zwp_primary_selection_offer_v1 *id);
+};
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_v1
+ */
+static inline int
+zwp_primary_selection_device_v1_add_listener(struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1,
+					     const struct zwp_primary_selection_device_v1_listener *listener, void *data)
+{
+	return wl_proxy_add_listener((struct wl_proxy *) zwp_primary_selection_device_v1,
+				     (void (**)(void)) listener, data);
+}
+
+#define ZWP_PRIMARY_SELECTION_DEVICE_V1_SET_SELECTION 0
+#define ZWP_PRIMARY_SELECTION_DEVICE_V1_DESTROY 1
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_v1
+ */
+#define ZWP_PRIMARY_SELECTION_DEVICE_V1_DATA_OFFER_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_primary_selection_device_v1
+ */
+#define ZWP_PRIMARY_SELECTION_DEVICE_V1_SELECTION_SINCE_VERSION 1
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_v1
+ */
+#define ZWP_PRIMARY_SELECTION_DEVICE_V1_SET_SELECTION_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_primary_selection_device_v1
+ */
+#define ZWP_PRIMARY_SELECTION_DEVICE_V1_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_primary_selection_device_v1 */
+static inline void
+zwp_primary_selection_device_v1_set_user_data(struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_primary_selection_device_v1, user_data);
+}
+
+/** @ingroup iface_zwp_primary_selection_device_v1 */
+static inline void *
+zwp_primary_selection_device_v1_get_user_data(struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_primary_selection_device_v1);
+}
+
+static inline uint32_t
+zwp_primary_selection_device_v1_get_version(struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_primary_selection_device_v1);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_v1
+ *
+ * Replaces the current selection. The previous owner of the primary
+ * selection will receive a wp_primary_selection_source.cancelled event.
+ *
+ * To unset the selection, set the source to NULL.
+ */
+static inline void
+zwp_primary_selection_device_v1_set_selection(struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1, struct zwp_primary_selection_source_v1 *source, uint32_t serial)
+{
+	wl_proxy_marshal((struct wl_proxy *) zwp_primary_selection_device_v1,
+			 ZWP_PRIMARY_SELECTION_DEVICE_V1_SET_SELECTION, source, serial);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_device_v1
+ *
+ * Destroy the primary selection device.
+ */
+static inline void
+zwp_primary_selection_device_v1_destroy(struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1)
+{
+	wl_proxy_marshal((struct wl_proxy *) zwp_primary_selection_device_v1,
+			 ZWP_PRIMARY_SELECTION_DEVICE_V1_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) zwp_primary_selection_device_v1);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_offer_v1
+ * @struct zwp_primary_selection_offer_v1_listener
+ */
+struct zwp_primary_selection_offer_v1_listener {
+	/**
+	 * advertise offered mime type
+	 *
+	 * Sent immediately after creating announcing the
+	 * wp_primary_selection_offer through
+	 * wp_primary_selection_device.data_offer. One event is sent per
+	 * offered mime type.
+	 */
+	void (*offer)(void *data,
+		      struct zwp_primary_selection_offer_v1 *zwp_primary_selection_offer_v1,
+		      const char *mime_type);
+};
+
+/**
+ * @ingroup iface_zwp_primary_selection_offer_v1
+ */
+static inline int
+zwp_primary_selection_offer_v1_add_listener(struct zwp_primary_selection_offer_v1 *zwp_primary_selection_offer_v1,
+					    const struct zwp_primary_selection_offer_v1_listener *listener, void *data)
+{
+	return wl_proxy_add_listener((struct wl_proxy *) zwp_primary_selection_offer_v1,
+				     (void (**)(void)) listener, data);
+}
+
+#define ZWP_PRIMARY_SELECTION_OFFER_V1_RECEIVE 0
+#define ZWP_PRIMARY_SELECTION_OFFER_V1_DESTROY 1
+
+/**
+ * @ingroup iface_zwp_primary_selection_offer_v1
+ */
+#define ZWP_PRIMARY_SELECTION_OFFER_V1_OFFER_SINCE_VERSION 1
+
+/**
+ * @ingroup iface_zwp_primary_selection_offer_v1
+ */
+#define ZWP_PRIMARY_SELECTION_OFFER_V1_RECEIVE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_primary_selection_offer_v1
+ */
+#define ZWP_PRIMARY_SELECTION_OFFER_V1_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_primary_selection_offer_v1 */
+static inline void
+zwp_primary_selection_offer_v1_set_user_data(struct zwp_primary_selection_offer_v1 *zwp_primary_selection_offer_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_primary_selection_offer_v1, user_data);
+}
+
+/** @ingroup iface_zwp_primary_selection_offer_v1 */
+static inline void *
+zwp_primary_selection_offer_v1_get_user_data(struct zwp_primary_selection_offer_v1 *zwp_primary_selection_offer_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_primary_selection_offer_v1);
+}
+
+static inline uint32_t
+zwp_primary_selection_offer_v1_get_version(struct zwp_primary_selection_offer_v1 *zwp_primary_selection_offer_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_primary_selection_offer_v1);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_offer_v1
+ *
+ * To transfer the contents of the primary selection clipboard, the client
+ * issues this request and indicates the mime type that it wants to
+ * receive. The transfer happens through the passed file descriptor
+ * (typically created with the pipe system call). The source client writes
+ * the data in the mime type representation requested and then closes the
+ * file descriptor.
+ *
+ * The receiving client reads from the read end of the pipe until EOF and
+ * closes its end, at which point the transfer is complete.
+ */
+static inline void
+zwp_primary_selection_offer_v1_receive(struct zwp_primary_selection_offer_v1 *zwp_primary_selection_offer_v1, const char *mime_type, int32_t fd)
+{
+	wl_proxy_marshal((struct wl_proxy *) zwp_primary_selection_offer_v1,
+			 ZWP_PRIMARY_SELECTION_OFFER_V1_RECEIVE, mime_type, fd);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_offer_v1
+ *
+ * Destroy the primary selection offer.
+ */
+static inline void
+zwp_primary_selection_offer_v1_destroy(struct zwp_primary_selection_offer_v1 *zwp_primary_selection_offer_v1)
+{
+	wl_proxy_marshal((struct wl_proxy *) zwp_primary_selection_offer_v1,
+			 ZWP_PRIMARY_SELECTION_OFFER_V1_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) zwp_primary_selection_offer_v1);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_source_v1
+ * @struct zwp_primary_selection_source_v1_listener
+ */
+struct zwp_primary_selection_source_v1_listener {
+	/**
+	 * send the primary selection contents
+	 *
+	 * Request for the current primary selection contents from the
+	 * client. Send the specified mime type over the passed file
+	 * descriptor, then close it.
+	 */
+	void (*send)(void *data,
+		     struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1,
+		     const char *mime_type,
+		     int32_t fd);
+	/**
+	 * request for primary selection contents was canceled
+	 *
+	 * This primary selection source is no longer valid. The client
+	 * should clean up and destroy this primary selection source.
+	 */
+	void (*cancelled)(void *data,
+			  struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1);
+};
+
+/**
+ * @ingroup iface_zwp_primary_selection_source_v1
+ */
+static inline int
+zwp_primary_selection_source_v1_add_listener(struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1,
+					     const struct zwp_primary_selection_source_v1_listener *listener, void *data)
+{
+	return wl_proxy_add_listener((struct wl_proxy *) zwp_primary_selection_source_v1,
+				     (void (**)(void)) listener, data);
+}
+
+#define ZWP_PRIMARY_SELECTION_SOURCE_V1_OFFER 0
+#define ZWP_PRIMARY_SELECTION_SOURCE_V1_DESTROY 1
+
+/**
+ * @ingroup iface_zwp_primary_selection_source_v1
+ */
+#define ZWP_PRIMARY_SELECTION_SOURCE_V1_SEND_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_primary_selection_source_v1
+ */
+#define ZWP_PRIMARY_SELECTION_SOURCE_V1_CANCELLED_SINCE_VERSION 1
+
+/**
+ * @ingroup iface_zwp_primary_selection_source_v1
+ */
+#define ZWP_PRIMARY_SELECTION_SOURCE_V1_OFFER_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_primary_selection_source_v1
+ */
+#define ZWP_PRIMARY_SELECTION_SOURCE_V1_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_primary_selection_source_v1 */
+static inline void
+zwp_primary_selection_source_v1_set_user_data(struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_primary_selection_source_v1, user_data);
+}
+
+/** @ingroup iface_zwp_primary_selection_source_v1 */
+static inline void *
+zwp_primary_selection_source_v1_get_user_data(struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_primary_selection_source_v1);
+}
+
+static inline uint32_t
+zwp_primary_selection_source_v1_get_version(struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_primary_selection_source_v1);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_source_v1
+ *
+ * This request adds a mime type to the set of mime types advertised to
+ * targets. Can be called several times to offer multiple types.
+ */
+static inline void
+zwp_primary_selection_source_v1_offer(struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1, const char *mime_type)
+{
+	wl_proxy_marshal((struct wl_proxy *) zwp_primary_selection_source_v1,
+			 ZWP_PRIMARY_SELECTION_SOURCE_V1_OFFER, mime_type);
+}
+
+/**
+ * @ingroup iface_zwp_primary_selection_source_v1
+ *
+ * Destroy the primary selection source.
+ */
+static inline void
+zwp_primary_selection_source_v1_destroy(struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1)
+{
+	wl_proxy_marshal((struct wl_proxy *) zwp_primary_selection_source_v1,
+			 ZWP_PRIMARY_SELECTION_SOURCE_V1_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) zwp_primary_selection_source_v1);
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif
diff --git a/widget/gtk/wayland/primary-selection-unstable-v1-protocol.c b/widget/gtk/wayland/primary-selection-unstable-v1-protocol.c
new file mode 100644
index 0000000000000..80b5264f39e21
--- /dev/null
+++ b/widget/gtk/wayland/primary-selection-unstable-v1-protocol.c
@@ -0,0 +1,116 @@
+/* Generated by wayland-scanner 1.18.0 */
+
+/*
+ * Copyright © 2015, 2016 Red Hat
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <gdk/gdkwayland.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface wl_seat_interface;
+extern const struct wl_interface zwp_primary_selection_device_v1_interface;
+extern const struct wl_interface zwp_primary_selection_offer_v1_interface;
+extern const struct wl_interface zwp_primary_selection_source_v1_interface;
+
+static const struct wl_interface *wp_primary_selection_unstable_v1_types[] = {
+	NULL,
+	NULL,
+	&zwp_primary_selection_source_v1_interface,
+	&zwp_primary_selection_device_v1_interface,
+	&wl_seat_interface,
+	&zwp_primary_selection_source_v1_interface,
+	NULL,
+	&zwp_primary_selection_offer_v1_interface,
+	&zwp_primary_selection_offer_v1_interface,
+};
+
+static const struct wl_message zwp_primary_selection_device_manager_v1_requests[] = {
+	{ "create_source", "n", wp_primary_selection_unstable_v1_types + 2 },
+	{ "get_device", "no", wp_primary_selection_unstable_v1_types + 3 },
+	{ "destroy", "", wp_primary_selection_unstable_v1_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_primary_selection_device_manager_v1_interface = {
+	"zwp_primary_selection_device_manager_v1", 1,
+	3, zwp_primary_selection_device_manager_v1_requests,
+	0, NULL,
+};
+
+static const struct wl_message zwp_primary_selection_device_v1_requests[] = {
+	{ "set_selection", "?ou", wp_primary_selection_unstable_v1_types + 5 },
+	{ "destroy", "", wp_primary_selection_unstable_v1_types + 0 },
+};
+
+static const struct wl_message zwp_primary_selection_device_v1_events[] = {
+	{ "data_offer", "n", wp_primary_selection_unstable_v1_types + 7 },
+	{ "selection", "?o", wp_primary_selection_unstable_v1_types + 8 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_primary_selection_device_v1_interface = {
+	"zwp_primary_selection_device_v1", 1,
+	2, zwp_primary_selection_device_v1_requests,
+	2, zwp_primary_selection_device_v1_events,
+};
+
+static const struct wl_message zwp_primary_selection_offer_v1_requests[] = {
+	{ "receive", "sh", wp_primary_selection_unstable_v1_types + 0 },
+	{ "destroy", "", wp_primary_selection_unstable_v1_types + 0 },
+};
+
+static const struct wl_message zwp_primary_selection_offer_v1_events[] = {
+	{ "offer", "s", wp_primary_selection_unstable_v1_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_primary_selection_offer_v1_interface = {
+	"zwp_primary_selection_offer_v1", 1,
+	2, zwp_primary_selection_offer_v1_requests,
+	1, zwp_primary_selection_offer_v1_events,
+};
+
+static const struct wl_message zwp_primary_selection_source_v1_requests[] = {
+	{ "offer", "s", wp_primary_selection_unstable_v1_types + 0 },
+	{ "destroy", "", wp_primary_selection_unstable_v1_types + 0 },
+};
+
+static const struct wl_message zwp_primary_selection_source_v1_events[] = {
+	{ "send", "sh", wp_primary_selection_unstable_v1_types + 0 },
+	{ "cancelled", "", wp_primary_selection_unstable_v1_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_primary_selection_source_v1_interface = {
+	"zwp_primary_selection_source_v1", 1,
+	2, zwp_primary_selection_source_v1_requests,
+	2, zwp_primary_selection_source_v1_events,
+};
+
-- 
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