[gnome-shell/wip/fmuellner/gtk4] Port extensions app and portal to GTK4




commit 9afc536d0e1061eb076a95716cab90391443d435
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Apr 15 20:27:15 2020 +0200

    Port extensions app and portal to GTK4
    
    With the previous preparations in place, it is time to take the plunge.
    
    As both the app and the portal use the same small library for handling
    external windows, port everything at once to avoid the hassle of building
    and installing two versions of the library.
    
    With the portal using GTK4 now, all extensions must port their preference
    widgets as well.

 js/dbusServices/extensions/extensionsService.js    |  12 +-
 js/dbusServices/extensions/main.js                 |   6 +-
 .../extensions/ui/extension-prefs-dialog.ui        |  43 +--
 .../extensions-app/data/ui/extension-row.ui        | 131 +++------
 .../extensions-app/data/ui/extensions-window.ui    | 323 +++++++++------------
 subprojects/extensions-app/js/main.js              |  56 +---
 subprojects/shew/meson.build                       |   2 +-
 subprojects/shew/src/meson.build                   |   2 +-
 .../shew/src/shew-external-window-wayland.c        |   6 +-
 subprojects/shew/src/shew-external-window-x11.c    |   8 +-
 subprojects/shew/src/shew-external-window.c        |   4 +-
 subprojects/shew/src/shew-external-window.h        |   4 +-
 subprojects/shew/src/shew-window-exporter.c        |  25 +-
 13 files changed, 247 insertions(+), 375 deletions(-)
---
diff --git a/js/dbusServices/extensions/extensionsService.js b/js/dbusServices/extensions/extensionsService.js
index 34107cdb32..8217675b0c 100644
--- a/js/dbusServices/extensions/extensionsService.js
+++ b/js/dbusServices/extensions/extensionsService.js
@@ -128,7 +128,7 @@ var ExtensionsService = class extends ServiceImplementation {
                 externalWindow = Shew.ExternalWindow.new_from_handle(parentWindow);
 
             if (externalWindow)
-                externalWindow.set_parent_of(window.window);
+                externalWindow.set_parent_of(window.get_surface());
 
             if (options.modal)
                 window.modal = options.modal.get_boolean();
@@ -177,11 +177,11 @@ var ExtensionPrefsDialog = GObject.registerClass({
         this._initActions();
         this._addCustomStylesheet();
 
-        this._gesture = new Gtk.GestureMultiPress({
-            widget: this._expander,
+        this._gesture = new Gtk.GestureClick({
             button: 0,
             exclusive: true,
         });
+        this._expander.add_controller(this._gesture);
 
         this._gesture.connect('released', (gesture, nPress) => {
             if (nPress === 1)
@@ -216,9 +216,9 @@ var ExtensionPrefsDialog = GObject.registerClass({
 
     _syncExpandedStyle() {
         if (this._revealer.reveal_child)
-            this._expander.get_style_context().add_class('expanded');
+            this._expander.add_css_class('expanded');
         else if (!this._revealer.child_revealed)
-            this._expander.get_style_context().remove_class('expanded');
+            this._expander.remove_css_class('expanded');
     }
 
     _setError(exc) {
@@ -276,7 +276,7 @@ var ExtensionPrefsDialog = GObject.registerClass({
         } catch (e) {
             logError(e, 'Failed to add application style');
         }
-        Gtk.StyleContext.add_provider_for_screen(Gdk.Screen.get_default(),
+        Gtk.StyleContext.add_provider_for_display(Gdk.Display.get_default(),
             provider,
             Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
     }
diff --git a/js/dbusServices/extensions/main.js b/js/dbusServices/extensions/main.js
index 9cc4bc5e33..0b6521e9e4 100644
--- a/js/dbusServices/extensions/main.js
+++ b/js/dbusServices/extensions/main.js
@@ -1,7 +1,7 @@
 /* exported main */
 
-imports.gi.versions.Gdk = '3.0';
-imports.gi.versions.Gtk = '3.0';
+imports.gi.versions.Gdk = '4.0';
+imports.gi.versions.Gtk = '4.0';
 
 const { Gtk } = imports.gi;
 const pkg = imports.package;
@@ -10,7 +10,7 @@ const { DBusService } = imports.dbusService;
 const { ExtensionsService } = imports.extensionsService;
 
 function main() {
-    Gtk.init(null);
+    Gtk.init();
     pkg.initFormat();
 
     const service = new DBusService(
diff --git a/js/dbusServices/extensions/ui/extension-prefs-dialog.ui 
b/js/dbusServices/extensions/ui/extension-prefs-dialog.ui
index 851adbf765..c03dc24b98 100644
--- a/js/dbusServices/extensions/ui/extension-prefs-dialog.ui
+++ b/js/dbusServices/extensions/ui/extension-prefs-dialog.ui
@@ -1,31 +1,22 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.22.1 -->
 <interface>
   <requires lib="gtk+" version="3.20"/>
   <template class="ExtensionPrefsDialog" parent="GtkWindow">
     <property name="default-width">600</property>
     <property name="default-height">400</property>
     <child type="titlebar">
-      <object class="GtkHeaderBar" id="headerBar">
-        <property name="visible">True</property>
-        <property name="show-close-button">True</property>
-      </object>
+      <object class="GtkHeaderBar"/>
     </child>
     <child>
       <object class="GtkStack" id="stack">
-        <property name="visible">True</property>
-        <property name="can-focus">False</property>
         <child>
           <object class="GtkScrolledWindow">
-            <property name="visible">True</property>
             <property name="hscrollbar-policy">never</property>
             <property name="propagate-natural-height">True</property>
             <child>
               <object class="GtkViewport">
-                <property name="visible">True</property>
                 <child>
                   <object class="GtkBox">
-                    <property name="visible">True</property>
                     <property name="orientation">vertical</property>
                     <property name="margin-start">100</property>
                     <property name="margin-end">100</property>
@@ -34,7 +25,6 @@
                     <property name="spacing">12</property>
                     <child>
                       <object class="GtkLabel">
-                        <property name="visible">True</property>
                         <property name="label" translatable="yes">Something’s gone wrong</property>
                         <attributes>
                           <attribute name="scale" value="1.44"/> <!-- x-large -->
@@ -46,7 +36,6 @@
                     </child>
                     <child>
                       <object class="GtkLabel">
-                        <property name="visible">True</property>
                         <property name="label" translatable="yes">We’re very sorry, but there’s been a 
problem: the settings for this extension can’t be displayed. We recommend that you report the issue to the 
extension authors.</property>
                         <property name="justify">center</property>
                         <property name="wrap">True</property>
@@ -54,29 +43,24 @@
                     </child>
                     <child>
                       <object class="GtkFrame">
-                        <property name="visible">True</property>
                         <property name="margin-top">12</property>
                         <child>
                           <object class="GtkBox">
-                            <property name="visible">True</property>
                             <property name="hexpand">True</property>
                             <property name="orientation">vertical</property>
                             <child>
                               <object class="GtkBox" id="expander">
-                                <property name="visible">True</property>
                                 <property name="spacing">6</property>
                                 <style>
                                   <class name="expander"/>
                                 </style>
                                 <child>
                                   <object class="GtkImage" id="expanderArrow">
-                                    <property name="visible">True</property>
                                     <property name="icon-name">pan-end-symbolic</property>
                                   </object>
                                 </child>
                                 <child>
                                   <object class="GtkLabel">
-                                    <property name="visible">True</property>
                                     <property name="label" translatable="yes">Technical Details</property>
                                   </object>
                                 </child>
@@ -84,15 +68,11 @@
                             </child>
                             <child>
                               <object class="GtkRevealer" id="revealer">
-                                <property name="visible">True</property>
                                 <child>
                                   <object class="GtkBox">
-                                    <property name="visible">True</property>
                                     <property name="orientation">vertical</property>
                                     <child>
                                       <object class="GtkTextView" id="errorView">
-                                        <property name="visible">True</property>
-                                        <property name="can-focus">True</property>
                                         <property name="monospace">True</property>
                                         <property name="editable">False</property>
                                         <property name="wrap-mode">word</property>
@@ -104,26 +84,15 @@
                                     </child>
                                     <child>
                                       <object class="GtkBox">
-                                        <property name="visible">True</property>
                                         <style>
                                           <class name="expander-toolbar"/>
                                         </style>
                                         <child>
                                           <object class="GtkButton">
-                                            <property name="visible">True</property>
-                                            <property name="can-focus">True</property>
                                             <property name="receives-default">True</property>
                                             <property name="action-name">win.copy-error</property>
-                                            <style>
-                                              <class name="flat"/>
-                                              <class name="image-button"/>
-                                            </style>
-                                            <child>
-                                              <object class="GtkImage">
-                                                <property name="visible">True</property>
-                                                <property name="icon-name">edit-copy-symbolic</property>
-                                              </object>
-                                            </child>
+                                            <property name="has-frame">False</property>
+                                            <property name="icon-name">edit-copy-symbolic</property>
                                           </object>
                                         </child>
                                         <child>
@@ -136,13 +105,9 @@
                                             <property name="halign">end</property>
                                             <property name="label" translatable="yes">Homepage</property>
                                             <property name="tooltip-text" translatable="yes">Visit extension 
homepage</property>
-                                            <property name="can-focus">True</property>
                                             <property name="receives-default">True</property>
-                                            <property name="no-show-all">True</property>
+                                            <property name="has-frame">False</property>
                                             <property name="action-name">win.show-url</property>
-                                            <style>
-                                              <class name="flat"/>
-                                            </style>
                                           </object>
                                         </child>
                                       </object>
diff --git a/subprojects/extensions-app/data/ui/extension-row.ui 
b/subprojects/extensions-app/data/ui/extension-row.ui
index ae24a75e19..ec56fedc9e 100644
--- a/subprojects/extensions-app/data/ui/extension-row.ui
+++ b/subprojects/extensions-app/data/ui/extension-row.ui
@@ -1,26 +1,21 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.22.0 -->
 <interface>
   <requires lib="gtk+" version="3.20"/>
   <template class="ExtensionRow" parent="GtkListBoxRow">
-    <property name="visible">True</property>
     <property name="activatable">False</property>
     <child>
       <object class="GtkGrid">
-        <property name="visible">True</property>
         <property name="margin-start">12</property>
         <property name="margin-end">12</property>
         <property name="margin-top">12</property>
         <property name="margin-bottom">12</property>
         <property name="column-spacing">12</property>
         <child>
-          <object class="GtkLabel" id="nameLabel">
-            <property name="visible">True</property>
-          </object>
+          <object class="GtkLabel" id="nameLabel"/>
         </child>
         <child>
           <object class="GtkImage" id="errorIcon">
-            <property name="no-show-all">True</property>
+            <property name="visible">False</property>
             <property name="icon-name">dialog-error-symbolic</property>
             <style>
               <class name="error"/>
@@ -29,7 +24,7 @@
         </child>
         <child>
           <object class="GtkImage" id="updatesIcon">
-            <property name="no-show-all">True</property>
+            <property name="visible">False</property>
             <property name="icon-name">software-update-available-symbolic</property>
             <style>
               <class name="warning"/>
@@ -38,77 +33,53 @@
         </child>
         <child>
           <object class="GtkLabel">
-            <property name="visible">True</property>
             <property name="hexpand">True</property>
           </object>
         </child>
         <child>
           <object class="GtkButton" id="prefsButton">
-            <property name="no-show-all">True</property>
             <property name="visible"
                       bind-source="prefsButton"
                       bind-property="sensitive"
                       bind-flags="sync-create"/>
-            <property name="can-focus">True</property>
+            <property name="icon-name">emblem-system-symbolic</property>
             <property name="receives-default">True</property>
             <property name="valign">center</property>
             <property name="action-name">row.show-prefs</property>
             <style>
               <class name="circular"/>
-              <class name="image-button"/>
             </style>
-            <child>
-              <object class="GtkImage">
-                <property name="visible">True</property>
-                <property name="icon-name">emblem-system-symbolic</property>
-              </object>
-            </child>
           </object>
         </child>
         <child>
           <object class="GtkSwitch" id="switch">
-            <property name="visible">True</property>
-            <property name="can-focus">True</property>
             <property name="valign">center</property>
             <property name="action-name">row.enabled</property>
           </object>
         </child>
         <child>
-          <object class="GtkSeparator">
-            <property name="visible">True</property>
-          </object>
+          <object class="GtkSeparator"/>
         </child>
-         <child>
+        <child>
           <object class="GtkButton" id="revealButton">
-            <property name="visible">True</property>
-            <property name="can-focus">True</property>
             <property name="receives-default">True</property>
             <property name="valign">center</property>
+            <property name="has-frame">False</property>
+            <property name="icon-name">pan-end-symbolic</property>
             <style>
               <class name="details-button"/>
-              <class name="image-button"/>
-              <class name="flat"/>
             </style>
-            <child>
-              <object class="GtkImage">
-                <property name="visible">True</property>
-                <property name="icon-name">pan-end-symbolic</property>
-              </object>
-            </child>
           </object>
         </child>
         <child>
           <object class="GtkRevealer" id="revealer">
-            <property name="visible">True</property>
             <child>
               <object class="GtkGrid">
-                <property name="visible">True</property>
                 <property name="margin-top">12</property>
                 <property name="row-spacing">6</property>
                 <property name="column-spacing">12</property>
                 <child>
                   <object class="GtkLabel">
-                    <property name="visible">True</property>
                     <property name="label" translatable="yes">Description</property>
                     <property name="xalign">0</property>
                     <style>
@@ -118,7 +89,6 @@
                 </child>
                 <child>
                   <object class="GtkLabel" id="descriptionLabel">
-                    <property name="visible">True</property>
                     <property name="ellipsize">end</property>
                     <property name="max-width-chars">60</property>
                     <property name="xalign">0</property>
@@ -131,27 +101,26 @@
                               bind-source="versionLabel"
                               bind-property="visible"
                               bind-flags="sync-create"/>
-                    <property name="no-show-all">True</property>
                     <property name="label" translatable="yes">Version</property>
                     <property name="xalign">0</property>
                     <style>
                       <class name="dim-label"/>
                     </style>
+                    <layout>
+                      <property name="column">0</property>
+                      <property name="row">1</property>
+                    </layout>
                   </object>
-                  <packing>
-                    <property name="left-attach">0</property>
-                    <property name="top-attach">1</property>
-                  </packing>
                 </child>
                 <child>
                   <object class="GtkLabel" id="versionLabel">
-                    <property name="no-show-all">True</property>
+                    <property name="visible">False</property>
                     <property name="xalign">0</property>
+                    <layout>
+                      <property name="column">1</property>
+                      <property name="row">1</property>
+                    </layout>
                   </object>
-                  <packing>
-                    <property name="left-attach">1</property>
-                    <property name="top-attach">1</property>
-                  </packing>
                 </child>
                 <child>
                   <object class="GtkLabel">
@@ -159,27 +128,26 @@
                               bind-source="authorLabel"
                               bind-property="visible"
                               bind-flags="sync-create"/>
-                    <property name="no-show-all">True</property>
                     <property name="label" translatable="yes">Author</property>
                     <property name="xalign">0</property>
                     <style>
                       <class name="dim-label"/>
                     </style>
+                    <layout>
+                      <property name="column">0</property>
+                      <property name="row">2</property>
+                    </layout>
                   </object>
-                  <packing>
-                    <property name="left-attach">0</property>
-                    <property name="top-attach">2</property>
-                  </packing>
                 </child>
                 <child>
                   <object class="GtkLabel" id="authorLabel">
-                    <property name="no-show-all">True</property>
+                    <property name="visible">False</property>
                     <property name="xalign">0</property>
+                    <layout>
+                      <property name="column">1</property>
+                      <property name="row">2</property>
+                    </layout>
                   </object>
-                  <packing>
-                    <property name="left-attach">1</property>
-                    <property name="top-attach">2</property>
-                  </packing>
                 </child>
                 <child>
                   <object class="GtkLabel">
@@ -187,44 +155,42 @@
                               bind-source="errorLabel"
                               bind-property="visible"
                               bind-flags="sync-create"/>
-                    <property name="no-show-all">True</property>
                     <property name="label" translatable="yes">Error</property>
                     <property name="xalign">0</property>
                     <property name="yalign">0</property>
                     <style>
                       <class name="dim-label"/>
                     </style>
+                    <layout>
+                      <property name="column">0</property>
+                      <property name="row">3</property>
+                    </layout>
                   </object>
-                  <packing>
-                    <property name="left-attach">0</property>
-                    <property name="top-attach">3</property>
-                  </packing>
                 </child>
                 <child>
                   <object class="GtkLabel" id="errorLabel">
-                    <property name="no-show-all">True</property>
+                    <property name="visible">False</property>
                     <property name="selectable">True</property>
                     <property name="wrap">True</property>
                     <property name="max-width-chars">60</property>
                     <property name="xalign">0</property>
+                    <layout>
+                      <property name="column">1</property>
+                      <property name="row">3</property>
+                    </layout>
                   </object>
-                  <packing>
-                    <property name="left-attach">1</property>
-                    <property name="top-attach">3</property>
-                  </packing>
                 </child>
                 <child>
                   <object class="GtkButton">
-                    <property name="visible">True</property>
                     <property name="label" translatable="yes">Website</property>
                     <property name="action-name">row.show-url</property>
                     <property name="valign">end</property>
                     <property name="margin-top">12</property>
+                    <layout>
+                      <property name="column">0</property>
+                      <property name="row">4</property>
+                    </layout>
                   </object>
-                  <packing>
-                    <property name="left-attach">0</property>
-                    <property name="top-attach">4</property>
-                  </packing>
                 </child>
                 <child>
                   <object class="GtkButton" id="removeButton">
@@ -232,7 +198,6 @@
                               bind-source="removeButton"
                               bind-property="sensitive"
                               bind-flags="sync-create"/>
-                    <property name="no-show-all">True</property>
                     <property name="label" translatable="yes">Remove…</property>
                     <property name="action-name">row.uninstall</property>
                     <property name="hexpand">True</property>
@@ -241,20 +206,20 @@
                     <style>
                       <class name="destructive-action"/>
                     </style>
+                    <layout>
+                      <property name="column">1</property>
+                      <property name="row">4</property>
+                    </layout>
                   </object>
-                  <packing>
-                    <property name="left-attach">1</property>
-                    <property name="top-attach">4</property>
-                  </packing>
                 </child>
               </object>
             </child>
+            <layout>
+              <property name="column">0</property>
+              <property name="row">1</property>
+              <property name="column-span">8</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">0</property>
-            <property name="top-attach">1</property>
-            <property name="width">8</property>
-          </packing>
         </child>
       </object>
     </child>
diff --git a/subprojects/extensions-app/data/ui/extensions-window.ui 
b/subprojects/extensions-app/data/ui/extensions-window.ui
index dab66aa204..f049bd7e36 100644
--- a/subprojects/extensions-app/data/ui/extensions-window.ui
+++ b/subprojects/extensions-app/data/ui/extensions-window.ui
@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.22.0 -->
 <interface>
   <requires lib="gtk+" version="3.20"/>
   <menu id="primary-menu">
@@ -17,7 +16,6 @@
   <object class="GtkPopover" id="infoPopover">
     <child>
       <object class="GtkBox">
-        <property name="visible">True</property>
         <property name="orientation">vertical</property>
         <property name="margin-start">12</property>
         <property name="margin-end">12</property>
@@ -26,7 +24,6 @@
         <property name="spacing">6</property>
         <child>
           <object class="GtkLabel">
-            <property name="visible">True</property>
             <property name="label" translatable="yes">To find and add extensions, visit &lt;a 
href="https://extensions.gnome.org"&gt;extensions.gnome.org&lt;/a&gt;.</property>
             <property name="use-markup">True</property>
             <property name="xalign">0</property>
@@ -34,7 +31,6 @@
         </child>
         <child>
           <object class="GtkLabel">
-            <property name="visible">True</property>
             <property name="label" translatable="yes">Warning</property>
             <property name="xalign">0</property>
             <property name="margin-top">6</property>
@@ -45,7 +41,6 @@
         </child>
         <child>
           <object class="GtkLabel">
-            <property name="visible">True</property>
             <property name="label" translatable="yes">Extensions can cause system issues, including 
performance problems. If you encounter problems with your system, it is recommended to disable all 
extensions.</property>
             <property name="wrap">True</property>
             <property name="max-width-chars">40</property>
@@ -61,79 +56,62 @@
     <property name="title" translatable="yes">Extensions</property>
     <child type="titlebar">
       <object class="GtkHeaderBar">
-        <property name="visible">True</property>
-        <property name="show-close-button">True</property>
         <child>
           <object class="GtkMenuButton">
-            <property name="visible">True</property>
             <property name="popover">infoPopover</property>
-            <child>
-              <object class="GtkImage">
-                <property name="visible">True</property>
-                <property name="icon-name">dialog-information-symbolic</property>
-              </object>
-            </child>
+            <property name="icon-name">dialog-information-symbolic</property>
           </object>
         </child>
-        <child>
+        <child type="end">
           <object class="GtkMenuButton" id="menuButton">
-            <property name="visible">True</property>
-            <property name="can-focus">True</property>
             <property name="receives-default">True</property>
             <property name="menu-model">primary-menu</property>
-            <child>
-              <object class="GtkImage">
-                <property name="visible">True</property>
-                <property name="icon-name">open-menu-symbolic</property>
-              </object>
-            </child>
+            <property name="icon-name">open-menu-symbolic</property>
           </object>
-          <packing>
-            <property name="pack-type">end</property>
-          </packing>
         </child>
-        <child>
+        <child type="end">
           <object class="GtkToggleButton" id="searchButton">
-            <property name="visible">True</property>
-            <property name="can-focus">True</property>
             <property name="receives-default">True</property>
+            <property name="icon-name">edit-find-symbolic</property>
             <child>
-              <object class="GtkImage">
-                <property name="visible">True</property>
-                <property name="icon-name">edit-find-symbolic</property>
+              <object class="GtkShortcutController">
+                <property name='scope'>global</property>
+                <child>
+                  <object class='GtkShortcut'>
+                    <property name='trigger'>&lt;Control&gt;f</property>
+                    <property name='action'>activate</property>
+                  </object>
+                </child>
+                <child>
+                  <object class='GtkShortcut'>
+                    <property name='trigger'>&lt;Control&gt;s</property>
+                    <property name='action'>activate</property>
+                  </object>
+                </child>
               </object>
             </child>
           </object>
-          <packing>
-            <property name="pack-type">end</property>
-          </packing>
         </child>
-        <child>
+        <child type="end">
           <object class="GtkSwitch">
-            <property name="visible">True</property>
             <property name="action-name">win.user-extensions-enabled</property>
             <property name="valign">center</property>
           </object>
-          <packing>
-            <property name="pack-type">end</property>
-          </packing>
         </child>
       </object>
     </child>
     <child>
       <object class="GtkBox">
-        <property name="visible">True</property>
         <property name="orientation">vertical</property>
         <child>
           <object class="GtkSearchBar" id="searchBar">
-            <property name="visible">True</property>
+            <property name="key-capture-widget">ExtensionsWindow</property>
             <property name="search-mode-enabled"
                       bind-source="searchButton"
                       bind-property="active"
                       bind-flags="bidirectional"/>
             <child>
               <object class="GtkSearchEntry" id="searchEntry">
-                <property name="visible">True</property>
                 <property name="max-width-chars">35</property>
               </object>
             </child>
@@ -141,159 +119,155 @@
         </child>
         <child>
           <object class="GtkStack" id="mainStack">
-            <property name="visible">True</property>
             <property name="transition-type">crossfade</property>
             <property name="vexpand">True</property>
             <child>
-              <object class="GtkScrolledWindow" id="scrolledWindow">
-                <property name="visible">True</property>
-                <property name="hscrollbar-policy">never</property>
-                <child>
-                  <object class="GtkViewport">
-                    <property name="visible">True</property>
+              <object class="GtkStackPage">
+                <property name="name">main</property>
+                <property name="child">
+                  <object class="GtkScrolledWindow" id="scrolledWindow">
+                    <property name="hscrollbar-policy">never</property>
                     <child>
-                      <object class="GtkBox" id="mainBox">
-                        <property name="visible">True</property>
-                        <property name="orientation">vertical</property>
-                        <property name="halign">center</property>
-                        <property name="margin-start">36</property>
-                        <property name="margin-end">36</property>
-                        <property name="margin-top">36</property>
-                        <property name="margin-bottom">36</property>
-                        <property name="spacing">12</property>
-                        <child>
-                          <object class="GtkLabel">
-                            <property name="visible"
-                                      bind-source="userList"
-                                      bind-property="visible"
-                                      bind-flags="sync-create"/>
-                            <property name="halign">start</property>
-                            <property name="hexpand">True</property>
-                            <property name="label" translatable="yes">Manually Installed</property>
-                            <attributes>
-                              <attribute name="weight" value="bold"/>
-                            </attributes>
-                          </object>
-                        </child>
-                        <child>
-                          <object class="GtkListBox" id="userList">
-                            <property name="visible">True</property>
-                            <property name="selection-mode">none</property>
-                            <property name="margin-bottom">24</property>
-                            <style>
-                              <class name="frame"/>
-                            </style>
-                          </object>
-                        </child>
-                        <child>
-                          <object class="GtkLabel">
-                            <property name="visible"
-                                      bind-source="systemList"
-                                      bind-property="visible"
-                                      bind-flags="sync-create"/>
-                            <property name="halign">start</property>
-                            <property name="hexpand">True</property>
-                            <property name="label" translatable="yes">Built-In</property>
-                            <attributes>
-                              <attribute name="weight" value="bold"/>
-                            </attributes>
-                          </object>
-                        </child>
+                      <object class="GtkViewport">
+                        <property name="scroll-to-focus">True</property>
                         <child>
-                          <object class="GtkListBox" id="systemList">
-                            <property name="visible">True</property>
-                            <property name="selection-mode">none</property>
-                            <style>
-                              <class name="frame"/>
-                            </style>
+                          <object class="GtkBox">
+                            <property name="orientation">vertical</property>
+                            <property name="halign">center</property>
+                            <property name="margin-start">36</property>
+                            <property name="margin-end">36</property>
+                            <property name="margin-top">36</property>
+                            <property name="margin-bottom">36</property>
+                            <property name="spacing">12</property>
+                            <child>
+                              <object class="GtkLabel">
+                                <property name="visible"
+                                          bind-source="userList"
+                                          bind-property="visible"
+                                          bind-flags="sync-create"/>
+                                <property name="halign">start</property>
+                                <property name="hexpand">True</property>
+                                <property name="label" translatable="yes">Manually Installed</property>
+                                <attributes>
+                                  <attribute name="weight" value="bold"/>
+                                </attributes>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkListBox" id="userList">
+                                <property name="selection-mode">none</property>
+                                <property name="show-separators">True</property>
+                                <property name="margin-bottom">24</property>
+                                <style>
+                                  <class name="frame"/>
+                                </style>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkLabel">
+                                <property name="visible"
+                                          bind-source="systemList"
+                                          bind-property="visible"
+                                          bind-flags="sync-create"/>
+                                <property name="halign">start</property>
+                                <property name="hexpand">True</property>
+                                <property name="label" translatable="yes">Built-In</property>
+                                <attributes>
+                                  <attribute name="weight" value="bold"/>
+                                </attributes>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkListBox" id="systemList">
+                                <property name="selection-mode">none</property>
+                                <property name="show-separators">True</property>
+                                <style>
+                                  <class name="frame"/>
+                                </style>
+                              </object>
+                            </child>
                           </object>
                         </child>
                       </object>
                     </child>
                   </object>
-                </child>
+                </property>
               </object>
-              <packing>
-                <property name="name">main</property>
-              </packing>
             </child>
             <child>
-              <object class="GtkBox">
-                <property name="visible">True</property>
-                <property name="orientation">vertical</property>
-                <property name="margin-start">32</property>
-                <property name="margin-end">32</property>
-                <property name="margin-top">32</property>
-                <property name="margin-bottom">32</property>
-                <property name="spacing">6</property>
-                <property name="valign">center</property>
-                <child>
-                  <object class="GtkImage">
-                    <property name="visible">True</property>
-                    <property name="pixel-size">96</property>
-                    <property name="icon-name">org.gnome.Extensions-symbolic</property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="label" translatable="yes">No Installed Extensions</property>
-                    <attributes>
-                      <attribute name="weight" value="bold"/>
-                      <attribute name="scale" value="1.44"/>
-                    </attributes>
+              <object class="GtkStackPage">
+                <property name="name">placeholder</property>
+                <property name="child">
+                  <object class="GtkBox">
+                    <property name="orientation">vertical</property>
+                    <property name="margin-start">32</property>
+                    <property name="margin-end">32</property>
+                    <property name="margin-top">32</property>
+                    <property name="margin-bottom">32</property>
+                    <property name="spacing">6</property>
+                    <property name="valign">center</property>
+                    <child>
+                      <object class="GtkImage">
+                        <property name="pixel-size">96</property>
+                        <property name="icon-name">org.gnome.Extensions-symbolic</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">No Installed Extensions</property>
+                        <attributes>
+                          <attribute name="weight" value="bold"/>
+                          <attribute name="scale" value="1.44"/>
+                        </attributes>
+                      </object>
+                    </child>
                   </object>
-                </child>
+                </property>
               </object>
-              <packing>
-                <property name="name">placeholder</property>
-              </packing>
             </child>
             <child>
-              <object class="GtkBox">
-                <property name="visible">True</property>
-                <property name="margin-start">100</property>
-                <property name="margin-end">100</property>
-                <property name="margin-top">100</property>
-                <property name="margin-bottom">60</property>
-                <property name="orientation">vertical</property>
-                <property name="spacing">12</property>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="label" translatable="yes">Something’s gone wrong</property>
-                    <attributes>
-                      <attribute name="scale" value="1.44"/>
-                    </attributes>
-                    <style>
-                      <class name="dim-label"/>
-                    </style>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkLabel">
-                    <property name="visible">True</property>
-                    <property name="label" translatable="yes">We’re very sorry, but it was not possible to 
get the list of installed extensions. Make sure you are logged into GNOME and try again.</property>
-                    <property name="justify">center</property>
-                    <property name="wrap">True</property>
-                    <style>
-                      <class name="dim-label"/>
-                    </style>
+              <object class="GtkStackPage">
+                <property name="name">noshell</property>
+                <property name="child">
+                  <object class="GtkBox">
+                    <property name="margin-start">100</property>
+                    <property name="margin-end">100</property>
+                    <property name="margin-top">100</property>
+                    <property name="margin-bottom">60</property>
+                    <property name="orientation">vertical</property>
+                    <property name="spacing">12</property>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">Something’s gone wrong</property>
+                        <attributes>
+                          <attribute name="scale" value="1.44"/>
+                        </attributes>
+                        <style>
+                          <class name="dim-label"/>
+                        </style>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="label" translatable="yes">We’re very sorry, but it was not possible 
to get the list of installed extensions. Make sure you are logged into GNOME and try again.</property>
+                        <property name="justify">center</property>
+                        <property name="wrap">True</property>
+                        <style>
+                          <class name="dim-label"/>
+                        </style>
+                      </object>
+                    </child>
                   </object>
-                </child>
+                </property>
               </object>
-              <packing>
-                <property name="name">noshell</property>
-              </packing>
             </child>
           </object>
         </child>
         <child>
           <object class="GtkActionBar" id="updatesBar">
-            <property name="no-show-all">True</property>
+            <property name="revealed">False</property>
             <child>
               <object class="GtkImage">
-                <property name="visible">True</property>
                 <property name="pixel-size">24</property>
                 <property name="margin-start">6</property>
                 <property name="margin-end">6</property>
@@ -307,11 +281,9 @@
             </child>
             <child>
               <object class="GtkBox">
-                <property name="visible">True</property>
                 <property name="orientation">vertical</property>
                 <child>
                   <object class="GtkLabel">
-                    <property name="visible">True</property>
                     <property name="halign">start</property>
                     <property name="label" translatable="yes">Extension Updates Ready</property>
                     <attributes>
@@ -321,16 +293,14 @@
                 </child>
                 <child>
                   <object class="GtkLabel" id="updatesLabel">
-                    <property name="visible">True</property>
                     <property name="halign">start</property>
                   </object>
                 </child>
               </object>
             </child>
-            <child>
+            <child type="end">
               <object class="GtkButton">
                 <property name="label" translatable="yes">Log Out…</property>
-                <property name="visible">True</property>
                 <property name="valign">center</property>
                 <property name="action-name">win.logout</property>
                 <property name="receives-default">True</property>
@@ -338,9 +308,6 @@
                   <class name="suggested-action"/>
                 </style>
               </object>
-              <packing>
-                <property name="pack-type">end</property>
-              </packing>
             </child>
           </object>
         </child>
diff --git a/subprojects/extensions-app/js/main.js b/subprojects/extensions-app/js/main.js
index a983beaef5..f89326f16a 100644
--- a/subprojects/extensions-app/js/main.js
+++ b/subprojects/extensions-app/js/main.js
@@ -1,6 +1,6 @@
 /* exported main */
-imports.gi.versions.Gdk = '3.0';
-imports.gi.versions.Gtk = '3.0';
+imports.gi.versions.Gdk = '4.0';
+imports.gi.versions.Gtk = '4.0';
 
 const Gettext = imports.gettext;
 const Package = imports.package;
@@ -67,7 +67,7 @@ class Application extends Gtk.Application {
         } catch (e) {
             logError(e, 'Failed to add application style');
         }
-        Gtk.StyleContext.add_provider_for_screen(Gdk.Screen.get_default(),
+        Gtk.StyleContext.add_provider_for_display(Gdk.Display.get_default(),
             provider,
             Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
 
@@ -88,7 +88,6 @@ var ExtensionsWindow = GObject.registerClass({
     InternalChildren: [
         'userList',
         'systemList',
-        'mainBox',
         'mainStack',
         'scrolledWindow',
         'searchBar',
@@ -106,8 +105,6 @@ var ExtensionsWindow = GObject.registerClass({
         this._exporter = new Shew.WindowExporter({ window: this });
         this._exportedHandle = '';
 
-        this._mainBox.set_focus_vadjustment(this._scrolledWindow.vadjustment);
-
         let action;
         action = new Gio.SimpleAction({ name: 'show-about' });
         action.connect('activate', this._showAbout.bind(this));
@@ -127,16 +124,6 @@ var ExtensionsWindow = GObject.registerClass({
         });
         this.add_action(action);
 
-        const accelGroup = new Gtk.AccelGroup();
-        this._searchButton.add_accelerator('clicked',
-            accelGroup, Gdk.KEY_f, Gdk.ModifierType.CONTROL_MASK, 0);
-        this._searchButton.add_accelerator('clicked',
-            accelGroup, Gdk.KEY_s, Gdk.ModifierType.CONTROL_MASK, 0);
-        this.add_accel_group(accelGroup);
-
-        this.connect('key-press-event',
-            (w, event) => this._searchBar.handle_event(event));
-
         this._searchTerms = [];
         this._searchId = this._searchEntry.connect('search-changed', () => {
             const { text } = this._searchEntry;
@@ -150,7 +137,6 @@ var ExtensionsWindow = GObject.registerClass({
         });
 
         this._userList.set_sort_func(this._sortList.bind(this));
-        this._userList.set_header_func(this._updateHeader.bind(this));
         this._userList.set_filter_func(this._filterList.bind(this));
         this._userList.set_placeholder(new Gtk.Label({
             label: _('No Matches'),
@@ -158,11 +144,9 @@ var ExtensionsWindow = GObject.registerClass({
             margin_end: 12,
             margin_top: 12,
             margin_bottom: 12,
-            visible: true,
         }));
 
         this._systemList.set_sort_func(this._sortList.bind(this));
-        this._systemList.set_header_func(this._updateHeader.bind(this));
         this._systemList.set_filter_func(this._filterList.bind(this));
         this._systemList.set_placeholder(new Gtk.Label({
             label: _('No Matches'),
@@ -170,7 +154,6 @@ var ExtensionsWindow = GObject.registerClass({
             margin_end: 12,
             margin_top: 12,
             margin_bottom: 12,
-            visible: true,
         }));
 
         this._extensionStateChangedId =
@@ -291,18 +274,10 @@ var ExtensionsWindow = GObject.registerClass({
             t => row.keywords.some(k => k.startsWith(t)));
     }
 
-    _updateHeader(row, before) {
-        if (!before || row.get_header())
-            return;
-
-        let sep = new Gtk.Separator({ orientation: Gtk.Orientation.HORIZONTAL });
-        row.set_header(sep);
-    }
-
     _findExtensionRow(uuid) {
         return [
-            ...this._userList.get_children(),
-            ...this._systemList.get_children(),
+            ...this._userList,
+            ...this._systemList,
         ].find(c => c.uuid === uuid);
     }
 
@@ -322,13 +297,13 @@ var ExtensionsWindow = GObject.registerClass({
         // and reset the variable to null so that we create a new row
         // below and add it to the appropriate list
         if (row && row.type !== extension.type) {
-            row.destroy();
+            row.get_parent().remove(row);
             row = null;
         }
 
         if (row) {
             if (extension.state === ExtensionState.UNINSTALLED)
-                row.destroy();
+                row.get_parent().remove(row);
         } else {
             this._addExtensionRow(extension);
         }
@@ -358,12 +333,11 @@ var ExtensionsWindow = GObject.registerClass({
 
     _addExtensionRow(extension) {
         let row = new ExtensionRow(extension);
-        row.show_all();
 
         if (row.type === ExtensionType.PER_USER)
-            this._userList.add(row);
+            this._userList.append(row);
         else
-            this._systemList.add(row);
+            this._systemList.append(row);
     }
 
     _queueUpdatesCheck() {
@@ -380,8 +354,8 @@ var ExtensionsWindow = GObject.registerClass({
     }
 
     _syncListVisibility() {
-        this._userList.visible = this._userList.get_children().length > 0;
-        this._systemList.visible = this._systemList.get_children().length > 0;
+        this._userList.visible = [...this._userList].length > 1;
+        this._systemList.visible = [...this._systemList].length > 1;
 
         if (this._userList.visible || this._systemList.visible)
             this._mainStack.visible_child_name = 'main';
@@ -390,13 +364,13 @@ var ExtensionsWindow = GObject.registerClass({
     }
 
     _checkUpdates() {
-        let nUpdates = this._userList.get_children().filter(c => c.hasUpdate).length;
+        let nUpdates = [...this._userList].filter(c => c.hasUpdate).length;
 
         this._updatesLabel.label = Gettext.ngettext(
             '%d extension will be updated on next login.',
             '%d extensions will be updated on next login.',
             nUpdates).format(nUpdates);
-        this._updatesBar.visible = nUpdates > 0;
+        this._updatesBar.revealed = nUpdates > 0;
     }
 
     _extensionsLoaded() {
@@ -438,7 +412,7 @@ var ExtensionRow = GObject.registerClass({
             name: 'show-prefs',
             enabled: this.hasPrefs,
         });
-        action.connect('activate', () => this.get_toplevel().openPrefs(this.uuid));
+        action.connect('activate', () => this.get_root().openPrefs(this.uuid));
         this._actionGroup.add_action(action);
 
         action = new Gio.SimpleAction({
@@ -455,7 +429,7 @@ var ExtensionRow = GObject.registerClass({
             name: 'uninstall',
             enabled: this.type === ExtensionType.PER_USER,
         });
-        action.connect('activate', () => this.get_toplevel().uninstall(this.uuid));
+        action.connect('activate', () => this.get_root().uninstall(this.uuid));
         this._actionGroup.add_action(action);
 
         action = new Gio.SimpleAction({
diff --git a/subprojects/shew/meson.build b/subprojects/shew/meson.build
index c19653421f..bfb419f625 100644
--- a/subprojects/shew/meson.build
+++ b/subprojects/shew/meson.build
@@ -22,7 +22,7 @@ pkglibdir = join_paths(get_option('libdir'), package_name)
 girdir = join_paths(pkgdatadir, 'gir-1.0')
 typelibdir = join_paths(pkglibdir, 'girepository-1.0')
 
-gtk_dep = dependency('gtk+-3.0')
+gtk_dep = dependency('gtk4')
 x11_dep = dependency('x11', required: false)
 
 subdir('src')
diff --git a/subprojects/shew/src/meson.build b/subprojects/shew/src/meson.build
index f3bff58271..e590a46129 100644
--- a/subprojects/shew/src/meson.build
+++ b/subprojects/shew/src/meson.build
@@ -21,7 +21,7 @@ libshew_gir = gnome.generate_gir(libshew,
   sources: shew_sources + shew_public_headers,
   nsversion: api_version,
   namespace: 'Shew',
-  includes: ['Gdk-3.0', 'Gtk-3.0'],
+  includes: ['Gdk-4.0', 'Gtk-4.0'],
   extra_args: ['--quiet'],
   install_dir_gir: girdir,
   install_dir_typelib: typelibdir,
diff --git a/subprojects/shew/src/shew-external-window-wayland.c 
b/subprojects/shew/src/shew-external-window-wayland.c
index 82989761f7..3d51aa8016 100644
--- a/subprojects/shew/src/shew-external-window-wayland.c
+++ b/subprojects/shew/src/shew-external-window-wayland.c
@@ -21,7 +21,7 @@
 #include <gdk/gdk.h>
 
 #ifdef GDK_WINDOWING_WAYLAND
-#include <gdk/gdkwayland.h>
+#include <gdk/wayland/gdkwayland.h>
 #endif
 
 #include "shew-external-window-wayland.h"
@@ -77,14 +77,14 @@ shew_external_window_wayland_new (const char *handle_str)
 
 static void
 shew_external_window_wayland_set_parent_of (ShewExternalWindow *external_window,
-                                            GdkWindow      *child_window)
+                                            GdkSurface         *child_surface)
 {
   ShewExternalWindowWayland *external_window_wayland =
     SHEW_EXTERNAL_WINDOW_WAYLAND (external_window);
   char *handle_str = external_window_wayland->handle_str;
 
 #ifdef GDK_WINDOWING_WAYLAND
-  if (!gdk_wayland_window_set_transient_for_exported (child_window, handle_str))
+  if (!gdk_wayland_toplevel_set_transient_for_exported (GDK_WAYLAND_TOPLEVEL (child_surface), handle_str))
     g_warning ("Failed to set portal window transient for external parent");
 #endif
 }
diff --git a/subprojects/shew/src/shew-external-window-x11.c b/subprojects/shew/src/shew-external-window-x11.c
index 0504a30f7a..7f08665b19 100644
--- a/subprojects/shew/src/shew-external-window-x11.c
+++ b/subprojects/shew/src/shew-external-window-x11.c
@@ -21,7 +21,7 @@
 #include <errno.h>
 #include <gdk/gdk.h>
 #ifdef GDK_WINDOWING_X11
-#include <gdk/gdkx.h>
+#include <gdk/x11/gdkx.h>
 #include <X11/Xlib.h>
 #endif
 #include <stdlib.h>
@@ -110,14 +110,14 @@ shew_external_window_x11_new (const char *handle_str)
 
 static void
 shew_external_window_x11_set_parent_of (ShewExternalWindow *external_window,
-                                        GdkWindow      *child_window)
+                                        GdkSurface         *child_surface)
 {
   ShewExternalWindowX11 *external_window_x11 =
     SHEW_EXTERNAL_WINDOW_X11 (external_window);
 
 #ifdef GDK_WINDOWING_X11
-  XSetTransientForHint (GDK_WINDOW_XDISPLAY (child_window),
-                        GDK_WINDOW_XID (child_window),
+  XSetTransientForHint (GDK_SURFACE_XDISPLAY (child_surface),
+                        GDK_SURFACE_XID (child_surface),
                         external_window_x11->foreign_xid);
 #endif
 }
diff --git a/subprojects/shew/src/shew-external-window.c b/subprojects/shew/src/shew-external-window.c
index f468346459..118d93fa40 100644
--- a/subprojects/shew/src/shew-external-window.c
+++ b/subprojects/shew/src/shew-external-window.c
@@ -75,10 +75,10 @@ shew_external_window_new_from_handle (const char *handle_str)
 
 void
 shew_external_window_set_parent_of (ShewExternalWindow *external_window,
-                                    GdkWindow          *child_window)
+                                    GdkSurface         *child_surface)
 {
   SHEW_EXTERNAL_WINDOW_GET_CLASS (external_window)->set_parent_of (external_window,
-                                                                   child_window);
+                                                                   child_surface);
 }
 
 /**
diff --git a/subprojects/shew/src/shew-external-window.h b/subprojects/shew/src/shew-external-window.h
index 105a8493be..ca6671b581 100644
--- a/subprojects/shew/src/shew-external-window.h
+++ b/subprojects/shew/src/shew-external-window.h
@@ -32,12 +32,12 @@ struct _ShewExternalWindowClass
   GObjectClass parent_class;
 
   void (*set_parent_of) (ShewExternalWindow *external_window,
-                         GdkWindow          *child_window);
+                         GdkSurface         *child_surface);
 };
 
 ShewExternalWindow *shew_external_window_new_from_handle (const char *handle_str);
 
 void shew_external_window_set_parent_of (ShewExternalWindow *external_window,
-                                         GdkWindow          *child_window);
+                                         GdkSurface         *child_surface);
 
 GdkDisplay *shew_external_window_get_display (ShewExternalWindow *external_window);
diff --git a/subprojects/shew/src/shew-window-exporter.c b/subprojects/shew/src/shew-window-exporter.c
index f9506823f0..ab84bf8a95 100644
--- a/subprojects/shew/src/shew-window-exporter.c
+++ b/subprojects/shew/src/shew-window-exporter.c
@@ -21,10 +21,10 @@
 #include "shew-window-exporter.h"
 
 #ifdef GDK_WINDOWING_X11
-#include <gdk/gdkx.h>
+#include <gdk/x11/gdkx.h>
 #endif
 #ifdef GDK_WINDOWING_WAYLAND
-#include <gdk/gdkwayland.h>
+#include <gdk/wayland/gdkwayland.h>
 #endif
 
 struct _ShewWindowExporter
@@ -53,9 +53,9 @@ shew_window_exporter_new (GtkWindow *window)
 
 #ifdef GDK_WINDOWING_WAYLAND
 static void
-wayland_window_exported (GdkWindow  *window,
-                         const char *handle,
-                         gpointer    user_data)
+wayland_window_exported (GdkToplevel *toplevel,
+                         const char  *handle,
+                         gpointer     user_data)
 {
   g_autoptr (GTask) task = user_data;
 
@@ -90,8 +90,8 @@ shew_window_exporter_export (ShewWindowExporter  *exporter,
 #ifdef GDK_WINDOWING_X11
   if (GDK_IS_X11_DISPLAY (gtk_widget_get_display (widget)))
     {
-      GdkWindow *w = gtk_widget_get_window (widget);
-      guint32 xid = (guint32) gdk_x11_window_get_xid (w);
+      GdkSurface *s = gtk_native_get_surface (GTK_NATIVE (widget));
+      guint32 xid = (guint32) gdk_x11_surface_get_xid (s);
 
       g_task_return_pointer (task, g_strdup_printf ("x11:%x", xid), g_free);
     }
@@ -100,9 +100,10 @@ shew_window_exporter_export (ShewWindowExporter  *exporter,
 #ifdef GDK_WINDOWING_WAYLAND
   if (GDK_IS_WAYLAND_DISPLAY (gtk_widget_get_display (widget)))
     {
-      GdkWindow *w = gtk_widget_get_window (widget);
-      gdk_wayland_window_export_handle (w, wayland_window_exported,
-                                        g_steal_pointer (&task), NULL);
+      GdkSurface *s = gtk_native_get_surface (GTK_NATIVE (widget));
+      gdk_wayland_toplevel_export_handle (GDK_WAYLAND_TOPLEVEL (s),
+                                          wayland_window_exported,
+                                          g_steal_pointer (&task), NULL);
     }
 #endif
 
@@ -136,8 +137,8 @@ shew_window_exporter_unexport (ShewWindowExporter *exporter)
 #ifdef GDK_WINDOWING_WAYLAND
   if (GDK_IS_WAYLAND_DISPLAY (gtk_widget_get_display (widget)))
     {
-      GdkWindow *w = gtk_widget_get_window (widget);
-      gdk_wayland_window_unexport_handle (w);
+      GdkSurface *s = gtk_native_get_surface (GTK_NATIVE (widget));
+      gdk_wayland_toplevel_unexport_handle (GDK_WAYLAND_TOPLEVEL (s));
     }
 #endif
 }


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