Check in new files for xdg-activation

* xdg-activation-v1.xml:
* xdg_activation.c:
* tests/xdg_activation_test:
* tests/xdg_activation_test.c: New files.

tests/xdg_activation_test.c

@@ -0,0 +1,349 @@
+/* Tests for the Wayland compositor running on the X server.
+
+Copyright (C) 2022 to various contributors.
+
+This file is part of 12to11.
+
+12to11 is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation, either version 3 of the License, or (at your
+option) any later version.
+
+12to11 is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with 12to11.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "test_harness.h"
+#include "xdg-activation-v1.h"
+
+#include <X11/extensions/XInput2.h>
+
+enum test_kind
+  {
+    XDG_ACTIVATION_KIND,
+  };
+
+static const char *test_names[] =
+  {
+    "test_activation_kind",
+  };
+
+#define LAST_TEST	        XDG_ACTIVATION_KIND
+#define TEST_SOURCE_DEVICE	415000
+
+/* The display.  */
+static struct test_display *display;
+
+/* The activation interface.  */
+static struct xdg_activation_v1 *activation;
+
+/* Test interfaces.  */
+static struct test_interface test_interfaces[] =
+  {
+    { "xdg_activation_v1", &activation, &xdg_activation_v1_interface, 1, },
+  };
+
+/* The test surface window.  */
+static Window test_surface_window;
+
+/* The test surface and Wayland surface.  */
+static struct test_surface *test_surface;
+static struct wl_surface *wayland_surface;
+
+/* The the last activation times.  */
+static uint32_t last_activation_months;
+static uint32_t last_activation_milliseconds;
+
+
+
+/* Forward declarations.  */
+static void submit_surface_damage (struct wl_surface *, int, int, int, int);
+static void wait_for_map (void);
+
+
+
+/* Get a timestamp suitable for use in events dispatched to the test
+   seat.  */
+
+static uint32_t
+test_get_time (void)
+{
+  struct timespec timespec;
+
+  clock_gettime (CLOCK_MONOTONIC, &timespec);
+
+  return (timespec.tv_sec * 1000
+	  + timespec.tv_nsec / 1000000);
+}
+
+/* Get the root window.  */
+
+static Window
+test_get_root (void)
+{
+  return DefaultRootWindow (display->x_display);
+}
+
+
+
+static void
+handle_xdg_activation_token_done (void *data,
+				  struct xdg_activation_token_v1 *token,
+				  const char *token_string)
+{
+  char **token_pointer;
+
+  token_pointer = data;
+  *token_pointer = strdup (token_string);
+}
+
+static const struct xdg_activation_token_v1_listener activation_token_listener =
+  {
+    handle_xdg_activation_token_done,
+  };
+
+
+
+static void
+check_activation_with_serial (uint32_t serial, bool expect_success)
+{
+  struct xdg_activation_token_v1 *token;
+  char *token_string;
+
+  /* Set the last user time to 0, 1001.  */
+  test_seat_controller_set_last_user_time (display->seat->controller,
+					   0, 1001);
+
+  /* Ask for an activation token.  */
+  token = xdg_activation_v1_get_activation_token (activation);
+  xdg_activation_token_v1_set_serial (token, serial, display->seat->seat);
+  xdg_activation_token_v1_set_surface (token, wayland_surface);
+  xdg_activation_token_v1_set_app_id (token, "xdg_activation_test");
+
+  token_string = NULL;
+  xdg_activation_token_v1_add_listener (token, &activation_token_listener,
+					&token_string);
+  xdg_activation_token_v1_commit (token);
+  wl_display_roundtrip (display->display);
+
+  if (!token_string)
+    report_test_failure ("failed to obtain activation token");
+
+  xdg_activation_token_v1_destroy (token);
+
+  /* Now, try to activate the surface.  */
+  last_activation_months = 0;
+  last_activation_milliseconds = 0;
+  xdg_activation_v1_activate (activation, token_string,
+			      wayland_surface);
+  wl_display_roundtrip (display->display);
+  free (token_string);
+
+  if (expect_success)
+    {
+      if (last_activation_months != 0
+	  || last_activation_milliseconds != 1001)
+	report_test_failure ("activation failed, wrong time or event not"
+			     " received");
+    }
+  else if (last_activation_months || last_activation_milliseconds)
+    report_test_failure ("activation succeeded unexpectedly");
+}
+
+static void
+test_single_step (enum test_kind kind)
+{
+  struct wl_buffer *buffer;
+  struct test_XIButtonState *button_state;
+  uint32_t serial;
+
+  test_log ("running test step: %s", test_names[kind]);
+
+  switch (kind)
+    {
+    case XDG_ACTIVATION_KIND:
+      buffer = load_png_image (display, "tiny.png");
+
+      if (!buffer)
+	report_test_failure ("failed to load tiny.png");
+
+      wl_surface_attach (wayland_surface, buffer, 0, 0);
+      submit_surface_damage (wayland_surface, 0, 0, 500, 500);
+      wl_surface_commit (wayland_surface);
+      wait_for_map ();
+
+      /* First, dispatch a single enter and button press event and get
+	 a serial after that event.  */
+
+      test_seat_controller_dispatch_XI_Enter (display->seat->controller,
+					      test_get_time (),
+					      TEST_SOURCE_DEVICE,
+					      XINotifyAncestor,
+					      test_get_root (),
+					      test_surface_window,
+					      None,
+					      wl_fixed_from_double (1.0),
+					      wl_fixed_from_double (1.0),
+					      wl_fixed_from_double (1.0),
+					      wl_fixed_from_double (1.0),
+					      XINotifyNormal,
+					      False, True, NULL, NULL,
+					      NULL);
+
+      button_state
+	= test_seat_controller_get_XIButtonState (display->seat->controller);
+
+      test_seat_controller_dispatch_XI_ButtonPress (display->seat->controller,
+						    test_get_time (),
+						    TEST_SOURCE_DEVICE,
+						    2,
+						    test_get_root (),
+						    test_surface_window,
+						    None,
+						    wl_fixed_from_double (1.0),
+						    wl_fixed_from_double (1.0),
+						    wl_fixed_from_double (1.0),
+						    wl_fixed_from_double (1.0),
+						    0,
+						    button_state,
+						    NULL, NULL, NULL);
+      test_XIButtonState_add_button (button_state, 2);
+
+      serial = test_get_serial (display);
+
+      /* Release the buttons.  */
+      test_seat_controller_dispatch_XI_ButtonRelease (display->seat->controller,
+						      test_get_time (),
+						      TEST_SOURCE_DEVICE,
+						      2,
+						      test_get_root (),
+						      test_surface_window,
+						      None,
+						      wl_fixed_from_double (1.0),
+						      wl_fixed_from_double (1.0),
+						      wl_fixed_from_double (1.0),
+						      wl_fixed_from_double (1.0),
+						      0,
+						      button_state,
+						      NULL, NULL, NULL);
+      test_XIButtonState_remove_button (button_state, 2);
+
+      /* Now, set the last user time and try to activate the surface
+	 with the given serial.  */
+      check_activation_with_serial (serial, true);
+
+      /* Next, get a serial after the button release and try to
+	 activate with that.  */
+      serial = test_get_serial (display);
+      check_activation_with_serial (serial, true);
+
+      /* Finally, click the mouse button again.  Verify that using the
+	 previously obtained serial for activation no longer
+	 works.  */
+      test_seat_controller_dispatch_XI_ButtonPress (display->seat->controller,
+						    test_get_time (),
+						    TEST_SOURCE_DEVICE,
+						    2,
+						    test_get_root (),
+						    test_surface_window,
+						    None,
+						    wl_fixed_from_double (1.0),
+						    wl_fixed_from_double (1.0),
+						    wl_fixed_from_double (1.0),
+						    wl_fixed_from_double (1.0),
+						    0,
+						    button_state,
+						    NULL, NULL, NULL);
+      test_XIButtonState_add_button (button_state, 2);
+      check_activation_with_serial (serial, false);
+      break;
+    }
+
+  if (kind == LAST_TEST)
+    test_complete ();
+}
+
+
+
+static void
+submit_surface_damage (struct wl_surface *surface, int x, int y, int width,
+		       int height)
+{
+  test_log ("damaging surface by %d, %d, %d, %d", x, y, width,
+	    height);
+
+  wl_surface_damage (surface, x, y, width, height);
+}
+
+
+
+static void
+handle_test_surface_mapped (void *data, struct test_surface *test_surface,
+			    uint32_t xid, const char *display_string)
+{
+  test_surface_window = xid;
+}
+
+static void
+handle_test_surface_activated (void *data, struct test_surface *test_surface,
+			       uint32_t months, uint32_t milliseconds)
+{
+  last_activation_months = months;
+  last_activation_milliseconds = milliseconds;
+}
+
+static const struct test_surface_listener test_surface_listener =
+  {
+    handle_test_surface_mapped,
+    handle_test_surface_activated,
+  };
+
+
+
+static void
+wait_for_map (void)
+{
+  while (!test_surface_window)
+    {
+      if (wl_display_dispatch (display->display) == -1)
+	die ("wl_display_dispatch");
+    }
+}
+
+
+
+static void
+run_test (void)
+{
+  if (!make_test_surface (display, &wayland_surface,
+			  &test_surface))
+    report_test_failure ("failed to create test surface");
+
+  test_surface_add_listener (test_surface, &test_surface_listener,
+			     NULL);
+  test_single_step (XDG_ACTIVATION_KIND);
+
+  while (true)
+    {
+      if (wl_display_dispatch (display->display) == -1)
+        die ("wl_display_dispatch");
+    }
+}
+
+int
+main (void)
+{
+  test_init ();
+  display = open_test_display (test_interfaces,
+			       ARRAYELTS (test_interfaces));
+
+  if (!display)
+    report_test_failure ("failed to open display");
+
+  test_init_seat (display);
+  run_test ();
+}

xdg-activation-v1.xml

@@ -0,0 +1,200 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="xdg_activation_v1">
+
+  <copyright>
+    Copyright © 2020 Aleix Pol Gonzalez &lt;aleixpol@kde.org&gt;
+    Copyright © 2020 Carlos Garnacho &lt;carlosg@gnome.org&gt;
+
+    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.
+  </copyright>
+
+  <description summary="Protocol for requesting activation of surfaces">
+    The way for a client to pass focus to another toplevel is as follows.
+
+    The client that intends to activate another toplevel uses the
+    xdg_activation_v1.get_activation_token request to get an activation token.
+    This token is then forwarded to the client, which is supposed to activate
+    one of its surfaces, through a separate band of communication.
+
+    One established way of doing this is through the XDG_ACTIVATION_TOKEN
+    environment variable of a newly launched child process. The child process
+    should unset the environment variable again right after reading it out in
+    order to avoid propagating it to other child processes.
+
+    Another established way exists for Applications implementing the D-Bus
+    interface org.freedesktop.Application, which should get their token under
+    XDG_ACTIVATION_TOKEN on their platform_data.
+
+    In general activation tokens may be transferred across clients through
+    means not described in this protocol.
+
+    The client to be activated will then pass the token
+    it received to the xdg_activation_v1.activate request. The compositor can
+    then use this token to decide how to react to the activation request.
+
+    The token the activating client gets may be ineffective either already at
+    the time it receives it, for example if it was not focused, for focus
+    stealing prevention. The activating client will have no way to discover
+    the validity of the token, and may still forward it to the to be activated
+    client.
+
+    The created activation token may optionally get information attached to it
+    that can be used by the compositor to identify the application that we
+    intend to activate. This can for example be used to display a visual hint
+    about what application is being started.
+
+    Warning! The protocol described in this file is currently in the testing
+    phase. Backward compatible changes may be added together with the
+    corresponding interface version bump. Backward incompatible changes can
+    only be done by creating a new major version of the extension.
+  </description>
+
+  <interface name="xdg_activation_v1" version="1">
+    <description summary="interface for activating surfaces">
+      A global interface used for informing the compositor about applications
+      being activated or started, or for applications to request to be
+      activated.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the xdg_activation object">
+        Notify the compositor that the xdg_activation object will no longer be
+        used.
+
+        The child objects created via this interface are unaffected and should
+        be destroyed separately.
+      </description>
+    </request>
+
+    <request name="get_activation_token">
+      <description summary="requests a token">
+        Creates an xdg_activation_token_v1 object that will provide
+        the initiating client with a unique token for this activation. This
+        token should be offered to the clients to be activated.
+      </description>
+
+      <arg name="id" type="new_id" interface="xdg_activation_token_v1"/>
+    </request>
+
+    <request name="activate">
+      <description summary="notify new interaction being available">
+        Requests surface activation. It's up to the compositor to display
+        this information as desired, for example by placing the surface above
+        the rest.
+
+        The compositor may know who requested this by checking the activation
+        token and might decide not to follow through with the activation if it's
+        considered unwanted.
+
+        Compositors can ignore unknown activation tokens when an invalid
+        token is passed.
+      </description>
+      <arg name="token" type="string" summary="the activation token of the initiating client"/>
+      <arg name="surface" type="object" interface="wl_surface"
+	   summary="the wl_surface to activate"/>
+    </request>
+  </interface>
+
+  <interface name="xdg_activation_token_v1" version="1">
+    <description summary="an exported activation handle">
+      An object for setting up a token and receiving a token handle that can
+      be passed as an activation token to another client.
+
+      The object is created using the xdg_activation_v1.get_activation_token
+      request. This object should then be populated with the app_id, surface
+      and serial information and committed. The compositor shall then issue a
+      done event with the token. In case the request's parameters are invalid,
+      the compositor will provide an invalid token.
+    </description>
+
+    <enum name="error">
+      <entry name="already_used" value="0"
+             summary="The token has already been used previously"/>
+    </enum>
+
+    <request name="set_serial">
+      <description summary="specifies the seat and serial of the activating event">
+        Provides information about the seat and serial event that requested the
+        token.
+
+        The serial can come from an input or focus event. For instance, if a
+        click triggers the launch of a third-party client, the launcher client
+        should send a set_serial request with the serial and seat from the
+        wl_pointer.button event.
+
+        Some compositors might refuse to activate toplevels when the token
+        doesn't have a valid and recent enough event serial.
+
+        Must be sent before commit. This information is optional.
+      </description>
+      <arg name="serial" type="uint"
+           summary="the serial of the event that triggered the activation"/>
+      <arg name="seat" type="object" interface="wl_seat"
+           summary="the wl_seat of the event"/>
+    </request>
+
+    <request name="set_app_id">
+      <description summary="specifies the application being activated">
+        The requesting client can specify an app_id to associate the token
+        being created with it.
+
+        Must be sent before commit. This information is optional.
+      </description>
+      <arg name="app_id" type="string"
+           summary="the application id of the client being activated."/>
+    </request>
+
+    <request name="set_surface">
+      <description summary="specifies the surface requesting activation">
+        This request sets the surface requesting the activation. Note, this is
+        different from the surface that will be activated.
+
+        Some compositors might refuse to activate toplevels when the token
+        doesn't have a requesting surface.
+
+        Must be sent before commit. This information is optional.
+      </description>
+      <arg name="surface" type="object" interface="wl_surface"
+	   summary="the requesting surface"/>
+    </request>
+
+    <request name="commit">
+      <description summary="issues the token request">
+        Requests an activation token based on the different parameters that
+        have been offered through set_serial, set_surface and set_app_id.
+      </description>
+    </request>
+
+    <event name="done">
+      <description summary="the exported activation token">
+        The 'done' event contains the unique token of this activation request
+        and notifies that the provider is done.
+      </description>
+      <arg name="token" type="string" summary="the exported activation token"/>
+    </event>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the xdg_activation_token_v1 object">
+        Notify the compositor that the xdg_activation_token_v1 object will no
+        longer be used.
+      </description>
+    </request>
+  </interface>
+</protocol>

xdg_activation.c

@@ -0,0 +1,288 @@
+/* Wayland compositor running on top of an X server.
+
+Copyright (C) 2022 to various contributors.
+
+This file is part of 12to11.
+
+12to11 is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation, either version 3 of the License, or (at your
+option) any later version.
+
+12to11 is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with 12to11.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "compositor.h"
+#include "xdg-activation-v1.h"
+
+typedef struct _XdgActivationToken XdgActivationToken;
+
+struct _XdgActivationToken
+{
+  /* The wl_resource associated with this activation token.  */
+  struct wl_resource *resource;
+
+  /* The seat associated with this activation token.  */
+  Seat *seat;
+
+  /* The seat destroy callback.  */
+  void *seat_destroy_callback;
+
+  /* The serial associated with this activation token.  */
+  uint32_t serial;
+};
+
+/* The xdg_activation_v1 global.  */
+static struct wl_global *xdg_activation_global;
+
+
+
+static void
+HandleSeatDestroyed (void *data)
+{
+  XdgActivationToken *token;
+
+  token = data;
+  token->seat = NULL;
+  token->serial = 0;
+}
+
+/* Compositor activation policy.  The protocol translator,
+   notwithstanding the judgement of the window manager, allows any
+   client whose token was created with (IOW, had at the time of
+   Commit) at least the latest key or pointer serial on its seat to
+   activate its toplevels.  The timestamp used to focus the toplevels
+   is the activation token.  */
+
+static void
+SetSerial (struct wl_client *client, struct wl_resource *resource,
+	   uint32_t serial, struct wl_resource *seat_resource)
+{
+  XdgActivationToken *token;
+  Seat *seat;
+
+  token = wl_resource_get_user_data (resource);
+
+  /* If token is NULL, then the token has already been used.  Silently
+     ignore this request.  */
+  if (!token)
+    return;
+
+  /* First, clear the current seat.  */
+  if (token->seat_destroy_callback)
+    XLSeatCancelDestroyListener (token->seat_destroy_callback);
+  token->seat = NULL;
+  token->seat_destroy_callback = NULL;
+
+  seat = wl_resource_get_user_data (seat_resource);
+
+  if (XLSeatIsInert (seat))
+    /* Just return if the seat is inert.  */
+    return;
+
+  /* Otherwise, set the seat and serial.  */
+  token->seat = seat;
+  token->serial = serial;
+  token->seat_destroy_callback
+    = XLSeatRunOnDestroy (seat, HandleSeatDestroyed, token);
+}
+
+static void
+SetAppId (struct wl_client *client, struct wl_resource *resource,
+	  const char *app_id)
+{
+  /* This information is not useful.  */
+}
+
+static void
+SetSurface (struct wl_client *client, struct wl_resource *resource,
+	    struct wl_resource *surface_resource)
+{
+  /* This information is not useful.  */
+}
+
+static void
+Commit (struct wl_client *client, struct wl_resource *resource)
+{
+  XdgActivationToken *token;
+  Timestamp last_user_time;
+  char buffer[80];
+
+  token = wl_resource_get_user_data (resource);
+
+  if (!token)
+    {
+      wl_resource_post_error (resource,
+			      XDG_ACTIVATION_TOKEN_V1_ERROR_ALREADY_USED,
+			      "the specified activation token has been passed"
+			      " to a previous commit request and is no longer"
+			      " valid");
+      return;
+    }
+
+  wl_resource_set_user_data (resource, NULL);
+
+  if (!token->seat || !XLSeatCheckActivationSerial (token->seat,
+						    token->serial))
+    {
+      /* Send an invalid serial.  */
+      xdg_activation_token_v1_send_done (token->resource,
+					 "activation_rejected");
+      goto finish;
+    }
+
+  /* Send the last user time as the activation token.  */
+  last_user_time = XLSeatGetLastUserTime (token->seat);
+  sprintf (buffer, "%"PRIu32".%"PRIu32".%d",
+	   last_user_time.months,
+	   last_user_time.milliseconds,
+	   XLSeatGetPointerDevice (token->seat));
+  xdg_activation_token_v1_send_done (token->resource, buffer);
+
+  /* Free the token.  */
+ finish:
+  if (token->seat_destroy_callback)
+    XLSeatCancelDestroyListener (token->seat_destroy_callback);
+
+  XLFree (token);
+}
+
+static void
+DestroyActivationToken (struct wl_client *client,
+			struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static struct xdg_activation_token_v1_interface xdg_activation_token_impl =
+  {
+    .set_serial = SetSerial,
+    .set_app_id = SetAppId,
+    .set_surface = SetSurface,
+    .commit = Commit,
+    .destroy = DestroyActivationToken,
+  };
+
+static void
+HandleResourceDestroy (struct wl_resource *resource)
+{
+  XdgActivationToken *token;
+
+  token = wl_resource_get_user_data (resource);
+
+  if (!token)
+    return;
+
+  if (token->seat_destroy_callback)
+    XLSeatCancelDestroyListener (token->seat_destroy_callback);
+
+  XLFree (token);
+}
+
+
+
+static void
+Destroy (struct wl_client *client, struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static void
+GetActivationToken (struct wl_client *client, struct wl_resource *resource,
+		    uint32_t id)
+{
+  XdgActivationToken *token;
+
+  token = XLSafeMalloc (sizeof *token);
+
+  if (!token)
+    {
+      wl_resource_post_no_memory (resource);
+      return;
+    }
+
+  memset (token, 0, sizeof *token);
+  token->resource
+    = wl_resource_create (client, &xdg_activation_token_v1_interface,
+			  wl_resource_get_version (resource), id);
+
+  if (!token->resource)
+    {
+      XLFree (token);
+      wl_resource_post_no_memory (resource);
+      return;
+    }
+
+  wl_resource_set_implementation (token->resource,
+				  &xdg_activation_token_impl,
+				  token, HandleResourceDestroy);
+}
+
+static void
+Activate (struct wl_client *client, struct wl_resource *resource,
+	  const char *token, struct wl_resource *surface_resource)
+{
+  Timestamp timestamp;
+  Surface *surface;
+  int deviceid;
+
+  if (sscanf (token, "%"SCNu32".%"SCNu32".%d", &timestamp.months,
+	      &timestamp.milliseconds, &deviceid) != 3)
+    /* The activation token is invalid.  */
+    return;
+
+  /* Activate the surface with the given token.  */
+
+  surface = wl_resource_get_user_data (surface_resource);
+
+  if (surface->role->funcs.activate)
+    surface->role->funcs.activate (surface, surface->role,
+				   deviceid, timestamp);
+}
+
+static const struct xdg_activation_v1_interface xdg_activation_impl =
+  {
+    .destroy = Destroy,
+    .get_activation_token = GetActivationToken,
+    .activate = Activate,
+  };
+
+static void
+HandleBind (struct wl_client *client, void *data, uint32_t version,
+	    uint32_t id)
+{
+  struct wl_resource *resource;
+
+  /* Create an xdg_activation_v1 resource.  This resource is then used
+     to create activation tokens and activate surfaces.  */
+  resource = wl_resource_create (client, &xdg_activation_v1_interface,
+				 version, id);
+
+  if (!resource)
+    {
+      wl_client_post_no_memory (client);
+      return;
+    }
+
+  wl_resource_set_implementation (resource, &xdg_activation_impl,
+				  NULL, NULL);
+}
+
+
+
+void
+XLInitXdgActivation (void)
+{
+  xdg_activation_global
+    = wl_global_create (compositor.wl_display,
+			&xdg_activation_v1_interface,
+			1, NULL, HandleBind);
+}