Client: Add shell integration for xdg-shell stable

[ChangeLog][QPA plugin] Added support for xdg-shell stable.

Mostly a copy of xdg_shell unstable v6 with prefixes and suffixes
removed. Otherwise, this is what changed:

- The global is now named "xdg_wm_base", since "xdg_shell" was taken by
  xdg-shell <= v5.
- Anchors and gravities are not bitfields anymore.

Task-number: QTBUG-66783
Change-Id: I8ca881aae52cc07b22ff5e26df13a9a1566f58f4
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

11 files changed, 1880 insertions, 1 deletions

diff --git a/src/3rdparty/protocol/qt_attribution.json b/src/3rdparty/protocol/qt_attribution.json
index 94d77f609..d934622c9 100644
--- a/src/3rdparty/protocol/qt_attribution.json
+++ b/src/3rdparty/protocol/qt_attribution.json
@@ -41,7 +41,7 @@ Copyright (c) 2013 BMW Car IT GmbH"
         "Name": "Wayland XDG Shell Protocol",
         "QDocModule": "qtwaylandcompositor",
         "QtUsage": "Used in the Qt Wayland Compositor, and the Qt Wayland platform plugin.",
-        "Files": "xdg-shell-unstable-v5.xml xdg-shell-unstable-v6.xml",
+        "Files": "xdg-shell-unstable-v5.xml xdg-shell-unstable-v6.xml xdg-shell.xml",
 
         "Description": "The XDG-Shell protocol is an extended way to manage surfaces under Wayland compositors.",
         "Homepage": "https://wayland.freedesktop.org",
diff --git a/src/3rdparty/protocol/xdg-shell.xml b/src/3rdparty/protocol/xdg-shell.xml
new file mode 100644
index 000000000..d524ea9e2
--- /dev/null
+++ b/src/3rdparty/protocol/xdg-shell.xml
@@ -0,0 +1,1120 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="xdg_shell">
+
+  <copyright>
+    Copyright © 2008-2013 Kristian Høgsberg
+    Copyright © 2013      Rafael Antognolli
+    Copyright © 2013      Jasper St. Pierre
+    Copyright © 2010-2013 Intel Corporation
+    Copyright © 2015-2017 Samsung Electronics Co., Ltd
+    Copyright © 2015-2017 Red Hat Inc.
+
+    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>
+
+  <interface name="xdg_wm_base" version="1">
+    <description summary="create desktop-style surfaces">
+      The xdg_wm_base interface is exposed as a global object enabling clients
+      to turn their wl_surfaces into windows in a desktop environment. It
+      defines the basic functionality needed for clients and the compositor to
+      create windows that can be dragged, resized, maximized, etc, as well as
+      creating transient windows such as popup menus.
+    </description>
+
+    <enum name="error">
+      <entry name="role" value="0" summary="given wl_surface has another role"/>
+      <entry name="defunct_surfaces" value="1"
+	     summary="xdg_wm_base was destroyed before children"/>
+      <entry name="not_the_topmost_popup" value="2"
+	     summary="the client tried to map or destroy a non-topmost popup"/>
+      <entry name="invalid_popup_parent" value="3"
+	     summary="the client specified an invalid popup parent surface"/>
+      <entry name="invalid_surface_state" value="4"
+	     summary="the client provided an invalid surface state"/>
+      <entry name="invalid_positioner" value="5"
+	     summary="the client provided an invalid positioner"/>
+    </enum>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy xdg_wm_base">
+	Destroy this xdg_wm_base object.
+
+	Destroying a bound xdg_wm_base object while there are surfaces
+	still alive created by this xdg_wm_base object instance is illegal
+	and will result in a protocol error.
+      </description>
+    </request>
+
+    <request name="create_positioner">
+      <description summary="create a positioner object">
+	Create a positioner object. A positioner object is used to position
+	surfaces relative to some parent surface. See the interface description
+	and xdg_surface.get_popup for details.
+      </description>
+      <arg name="id" type="new_id" interface="xdg_positioner"/>
+    </request>
+
+    <request name="get_xdg_surface">
+      <description summary="create a shell surface from a surface">
+	This creates an xdg_surface for the given surface. While xdg_surface
+	itself is not a role, the corresponding surface may only be assigned
+	a role extending xdg_surface, such as xdg_toplevel or xdg_popup.
+
+	This creates an xdg_surface for the given surface. An xdg_surface is
+	used as basis to define a role to a given surface, such as xdg_toplevel
+	or xdg_popup. It also manages functionality shared between xdg_surface
+	based surface roles.
+
+	See the documentation of xdg_surface for more details about what an
+	xdg_surface is and how it is used.
+      </description>
+      <arg name="id" type="new_id" interface="xdg_surface"/>
+      <arg name="surface" type="object" interface="wl_surface"/>
+    </request>
+
+    <request name="pong">
+      <description summary="respond to a ping event">
+	A client must respond to a ping event with a pong request or
+	the client may be deemed unresponsive. See xdg_wm_base.ping.
+      </description>
+      <arg name="serial" type="uint" summary="serial of the ping event"/>
+    </request>
+
+    <event name="ping">
+      <description summary="check if the client is alive">
+	The ping event asks the client if it's still alive. Pass the
+	serial specified in the event back to the compositor by sending
+	a "pong" request back with the specified serial. See xdg_wm_base.ping.
+
+	Compositors can use this to determine if the client is still
+	alive. It's unspecified what will happen if the client doesn't
+	respond to the ping request, or in what timeframe. Clients should
+	try to respond in a reasonable amount of time.
+
+	A compositor is free to ping in any way it wants, but a client must
+	always respond to any xdg_wm_base object it created.
+      </description>
+      <arg name="serial" type="uint" summary="pass this to the pong request"/>
+    </event>
+  </interface>
+
+  <interface name="xdg_positioner" version="1">
+    <description summary="child surface positioner">
+      The xdg_positioner provides a collection of rules for the placement of a
+      child surface relative to a parent surface. Rules can be defined to ensure
+      the child surface remains within the visible area's borders, and to
+      specify how the child surface changes its position, such as sliding along
+      an axis, or flipping around a rectangle. These positioner-created rules are
+      constrained by the requirement that a child surface must intersect with or
+      be at least partially adjacent to its parent surface.
+
+      See the various requests for details about possible rules.
+
+      At the time of the request, the compositor makes a copy of the rules
+      specified by the xdg_positioner. Thus, after the request is complete the
+      xdg_positioner object can be destroyed or reused; further changes to the
+      object will have no effect on previous usages.
+
+      For an xdg_positioner object to be considered complete, it must have a
+      non-zero size set by set_size, and a non-zero anchor rectangle set by
+      set_anchor_rect. Passing an incomplete xdg_positioner object when
+      positioning a surface raises an error.
+    </description>
+
+    <enum name="error">
+      <entry name="invalid_input" value="0" summary="invalid input provided"/>
+    </enum>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the xdg_positioner object">
+	Notify the compositor that the xdg_positioner will no longer be used.
+      </description>
+    </request>
+
+    <request name="set_size">
+      <description summary="set the size of the to-be positioned rectangle">
+	Set the size of the surface that is to be positioned with the positioner
+	object. The size is in surface-local coordinates and corresponds to the
+	window geometry. See xdg_surface.set_window_geometry.
+
+	If a zero or negative size is set the invalid_input error is raised.
+      </description>
+      <arg name="width" type="int" summary="width of positioned rectangle"/>
+      <arg name="height" type="int" summary="height of positioned rectangle"/>
+    </request>
+
+    <request name="set_anchor_rect">
+      <description summary="set the anchor rectangle within the parent surface">
+	Specify the anchor rectangle within the parent surface that the child
+	surface will be placed relative to. The rectangle is relative to the
+	window geometry as defined by xdg_surface.set_window_geometry of the
+	parent surface.
+
+	When the xdg_positioner object is used to position a child surface, the
+	anchor rectangle may not extend outside the window geometry of the
+	positioned child's parent surface.
+
+	If a negative size is set the invalid_input error is raised.
+      </description>
+      <arg name="x" type="int" summary="x position of anchor rectangle"/>
+      <arg name="y" type="int" summary="y position of anchor rectangle"/>
+      <arg name="width" type="int" summary="width of anchor rectangle"/>
+      <arg name="height" type="int" summary="height of anchor rectangle"/>
+    </request>
+
+    <enum name="anchor">
+      <entry name="none" value="0"/>
+      <entry name="top" value="1"/>
+      <entry name="bottom" value="2"/>
+      <entry name="left" value="3"/>
+      <entry name="right" value="4"/>
+      <entry name="top_left" value="5"/>
+      <entry name="bottom_left" value="6"/>
+      <entry name="top_right" value="7"/>
+      <entry name="bottom_right" value="8"/>
+    </enum>
+
+    <request name="set_anchor">
+      <description summary="set anchor rectangle anchor">
+	Defines the anchor point for the anchor rectangle. The specified anchor
+	is used derive an anchor point that the child surface will be
+	positioned relative to. If a corner anchor is set (e.g. 'top_left' or
+	'bottom_right'), the anchor point will be at the specified corner;
+	otherwise, the derived anchor point will be centered on the specified
+	edge, or in the center of the anchor rectangle if no edge is specified.
+      </description>
+      <arg name="anchor" type="uint" enum="anchor"
+	   summary="anchor"/>
+    </request>
+
+    <enum name="gravity">
+      <entry name="none" value="0"/>
+      <entry name="top" value="1"/>
+      <entry name="bottom" value="2"/>
+      <entry name="left" value="3"/>
+      <entry name="right" value="4"/>
+      <entry name="top_left" value="5"/>
+      <entry name="bottom_left" value="6"/>
+      <entry name="top_right" value="7"/>
+      <entry name="bottom_right" value="8"/>
+    </enum>
+
+    <request name="set_gravity">
+      <description summary="set child surface gravity">
+	Defines in what direction a surface should be positioned, relative to
+	the anchor point of the parent surface. If a corner gravity is
+	specified (e.g. 'bottom_right' or 'top_left'), then the child surface
+	will be placed towards the specified gravity; otherwise, the child
+	surface will be centered over the anchor point on any axis that had no
+	gravity specified.
+      </description>
+      <arg name="gravity" type="uint" enum="gravity"
+	   summary="gravity direction"/>
+    </request>
+
+    <enum name="constraint_adjustment" bitfield="true">
+      <description summary="constraint adjustments">
+	The constraint adjustment value define ways the compositor will adjust
+	the position of the surface, if the unadjusted position would result
+	in the surface being partly constrained.
+
+	Whether a surface is considered 'constrained' is left to the compositor
+	to determine. For example, the surface may be partly outside the
+	compositor's defined 'work area', thus necessitating the child surface's
+	position be adjusted until it is entirely inside the work area.
+
+	The adjustments can be combined, according to a defined precedence: 1)
+	Flip, 2) Slide, 3) Resize.
+      </description>
+      <entry name="none" value="0">
+	<description summary="don't move the child surface when constrained">
+	  Don't alter the surface position even if it is constrained on some
+	  axis, for example partially outside the edge of an output.
+	</description>
+      </entry>
+      <entry name="slide_x" value="1">
+	<description summary="move along the x axis until unconstrained">
+	  Slide the surface along the x axis until it is no longer constrained.
+
+	  First try to slide towards the direction of the gravity on the x axis
+	  until either the edge in the opposite direction of the gravity is
+	  unconstrained or the edge in the direction of the gravity is
+	  constrained.
+
+	  Then try to slide towards the opposite direction of the gravity on the
+	  x axis until either the edge in the direction of the gravity is
+	  unconstrained or the edge in the opposite direction of the gravity is
+	  constrained.
+	</description>
+      </entry>
+      <entry name="slide_y" value="2">
+	<description summary="move along the y axis until unconstrained">
+	  Slide the surface along the y axis until it is no longer constrained.
+
+	  First try to slide towards the direction of the gravity on the y axis
+	  until either the edge in the opposite direction of the gravity is
+	  unconstrained or the edge in the direction of the gravity is
+	  constrained.
+
+	  Then try to slide towards the opposite direction of the gravity on the
+	  y axis until either the edge in the direction of the gravity is
+	  unconstrained or the edge in the opposite direction of the gravity is
+	  constrained.
+	</description>
+      </entry>
+      <entry name="flip_x" value="4">
+	<description summary="invert the anchor and gravity on the x axis">
+	  Invert the anchor and gravity on the x axis if the surface is
+	  constrained on the x axis. For example, if the left edge of the
+	  surface is constrained, the gravity is 'left' and the anchor is
+	  'left', change the gravity to 'right' and the anchor to 'right'.
+
+	  If the adjusted position also ends up being constrained, the resulting
+	  position of the flip_x adjustment will be the one before the
+	  adjustment.
+	</description>
+      </entry>
+      <entry name="flip_y" value="8">
+	<description summary="invert the anchor and gravity on the y axis">
+	  Invert the anchor and gravity on the y axis if the surface is
+	  constrained on the y axis. For example, if the bottom edge of the
+	  surface is constrained, the gravity is 'bottom' and the anchor is
+	  'bottom', change the gravity to 'top' and the anchor to 'top'.
+
+	  The adjusted position is calculated given the original anchor
+	  rectangle and offset, but with the new flipped anchor and gravity
+	  values.
+
+	  If the adjusted position also ends up being constrained, the resulting
+	  position of the flip_y adjustment will be the one before the
+	  adjustment.
+	</description>
+      </entry>
+      <entry name="resize_x" value="16">
+	<description summary="horizontally resize the surface">
+	  Resize the surface horizontally so that it is completely
+	  unconstrained.
+	</description>
+      </entry>
+      <entry name="resize_y" value="32">
+	<description summary="vertically resize the surface">
+	  Resize the surface vertically so that it is completely unconstrained.
+	</description>
+      </entry>
+    </enum>
+
+    <request name="set_constraint_adjustment">
+      <description summary="set the adjustment to be done when constrained">
+	Specify how the window should be positioned if the originally intended
+	position caused the surface to be constrained, meaning at least
+	partially outside positioning boundaries set by the compositor. The
+	adjustment is set by constructing a bitmask describing the adjustment to
+	be made when the surface is constrained on that axis.
+
+	If no bit for one axis is set, the compositor will assume that the child
+	surface should not change its position on that axis when constrained.
+
+	If more than one bit for one axis is set, the order of how adjustments
+	are applied is specified in the corresponding adjustment descriptions.
+
+	The default adjustment is none.
+      </description>
+      <arg name="constraint_adjustment" type="uint"
+	   summary="bit mask of constraint adjustments"/>
+    </request>
+
+    <request name="set_offset">
+      <description summary="set surface position offset">
+	Specify the surface position offset relative to the position of the
+	anchor on the anchor rectangle and the anchor on the surface. For
+	example if the anchor of the anchor rectangle is at (x, y), the surface
+	has the gravity bottom|right, and the offset is (ox, oy), the calculated
+	surface position will be (x + ox, y + oy). The offset position of the
+	surface is the one used for constraint testing. See
+	set_constraint_adjustment.
+
+	An example use case is placing a popup menu on top of a user interface
+	element, while aligning the user interface element of the parent surface
+	with some user interface element placed somewhere in the popup surface.
+      </description>
+      <arg name="x" type="int" summary="surface position x offset"/>
+      <arg name="y" type="int" summary="surface position y offset"/>
+    </request>
+  </interface>
+
+  <interface name="xdg_surface" version="1">
+    <description summary="desktop user interface surface base interface">
+      An interface that may be implemented by a wl_surface, for
+      implementations that provide a desktop-style user interface.
+
+      It provides a base set of functionality required to construct user
+      interface elements requiring management by the compositor, such as
+      toplevel windows, menus, etc. The types of functionality are split into
+      xdg_surface roles.
+
+      Creating an xdg_surface does not set the role for a wl_surface. In order
+      to map an xdg_surface, the client must create a role-specific object
+      using, e.g., get_toplevel, get_popup. The wl_surface for any given
+      xdg_surface can have at most one role, and may not be assigned any role
+      not based on xdg_surface.
+
+      A role must be assigned before any other requests are made to the
+      xdg_surface object.
+
+      The client must call wl_surface.commit on the corresponding wl_surface
+      for the xdg_surface state to take effect.
+
+      Creating an xdg_surface from a wl_surface which has a buffer attached or
+      committed is a client error, and any attempts by a client to attach or
+      manipulate a buffer prior to the first xdg_surface.configure call must
+      also be treated as errors.
+
+      Mapping an xdg_surface-based role surface is defined as making it
+      possible for the surface to be shown by the compositor. Note that
+      a mapped surface is not guaranteed to be visible once it is mapped.
+
+      For an xdg_surface to be mapped by the compositor, the following
+      conditions must be met:
+      (1) the client has assigned an xdg_surface-based role to the surface
+      (2) the client has set and committed the xdg_surface state and the
+	  role-dependent state to the surface
+      (3) the client has committed a buffer to the surface
+
+      A newly-unmapped surface is considered to have met condition (1) out
+      of the 3 required conditions for mapping a surface if its role surface
+      has not been destroyed.
+    </description>
+
+    <enum name="error">
+      <entry name="not_constructed" value="1"/>
+      <entry name="already_constructed" value="2"/>
+      <entry name="unconfigured_buffer" value="3"/>
+    </enum>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the xdg_surface">
+	Destroy the xdg_surface object. An xdg_surface must only be destroyed
+	after its role object has been destroyed.
+      </description>
+    </request>
+
+    <request name="get_toplevel">
+      <description summary="assign the xdg_toplevel surface role">
+	This creates an xdg_toplevel object for the given xdg_surface and gives
+	the associated wl_surface the xdg_toplevel role.
+
+	See the documentation of xdg_toplevel for more details about what an
+	xdg_toplevel is and how it is used.
+      </description>
+      <arg name="id" type="new_id" interface="xdg_toplevel"/>
+    </request>
+
+    <request name="get_popup">
+      <description summary="assign the xdg_popup surface role">
+	This creates an xdg_popup object for the given xdg_surface and gives
+	the associated wl_surface the xdg_popup role.
+
+	If null is passed as a parent, a parent surface must be specified using
+	some other protocol, before committing the initial state.
+
+	See the documentation of xdg_popup for more details about what an
+	xdg_popup is and how it is used.
+      </description>
+      <arg name="id" type="new_id" interface="xdg_popup"/>
+      <arg name="parent" type="object" interface="xdg_surface" allow-null="true"/>
+      <arg name="positioner" type="object" interface="xdg_positioner"/>
+    </request>
+
+    <request name="set_window_geometry">
+      <description summary="set the new window geometry">
+	The window geometry of a surface is its "visible bounds" from the
+	user's perspective. Client-side decorations often have invisible
+	portions like drop-shadows which should be ignored for the
+	purposes of aligning, placing and constraining windows.
+
+	The window geometry is double buffered, and will be applied at the
+	time wl_surface.commit of the corresponding wl_surface is called.
+
+	When maintaining a position, the compositor should treat the (x, y)
+	coordinate of the window geometry as the top left corner of the window.
+	A client changing the (x, y) window geometry coordinate should in
+	general not alter the position of the window.
+
+	Once the window geometry of the surface is set, it is not possible to
+	unset it, and it will remain the same until set_window_geometry is
+	called again, even if a new subsurface or buffer is attached.
+
+	If never set, the value is the full bounds of the surface,
+	including any subsurfaces. This updates dynamically on every
+	commit. This unset is meant for extremely simple clients.
+
+	The arguments are given in the surface-local coordinate space of
+	the wl_surface associated with this xdg_surface.
+
+	The width and height must be greater than zero. Setting an invalid size
+	will raise an error. When applied, the effective window geometry will be
+	the set window geometry clamped to the bounding rectangle of the
+	combined geometry of the surface of the xdg_surface and the associated
+	subsurfaces.
+      </description>
+      <arg name="x" type="int"/>
+      <arg name="y" type="int"/>
+      <arg name="width" type="int"/>
+      <arg name="height" type="int"/>
+    </request>
+
+    <request name="ack_configure">
+      <description summary="ack a configure event">
+	When a configure event is received, if a client commits the
+	surface in response to the configure event, then the client
+	must make an ack_configure request sometime before the commit
+	request, passing along the serial of the configure event.
+
+	For instance, for toplevel surfaces the compositor might use this
+	information to move a surface to the top left only when the client has
+	drawn itself for the maximized or fullscreen state.
+
+	If the client receives multiple configure events before it
+	can respond to one, it only has to ack the last configure event.
+
+	A client is not required to commit immediately after sending
+	an ack_configure request - it may even ack_configure several times
+	before its next surface commit.
+
+	A client may send multiple ack_configure requests before committing, but
+	only the last request sent before a commit indicates which configure
+	event the client really is responding to.
+      </description>
+      <arg name="serial" type="uint" summary="the serial from the configure event"/>
+    </request>
+
+    <event name="configure">
+      <description summary="suggest a surface change">
+	The configure event marks the end of a configure sequence. A configure
+	sequence is a set of one or more events configuring the state of the
+	xdg_surface, including the final xdg_surface.configure event.
+
+	Where applicable, xdg_surface surface roles will during a configure
+	sequence extend this event as a latched state sent as events before the
+	xdg_surface.configure event. Such events should be considered to make up
+	a set of atomically applied configuration states, where the
+	xdg_surface.configure commits the accumulated state.
+
+	Clients should arrange their surface for the new states, and then send
+	an ack_configure request with the serial sent in this configure event at
+	some point before committing the new surface.
+
+	If the client receives multiple configure events before it can respond
+	to one, it is free to discard all but the last event it received.
+      </description>
+      <arg name="serial" type="uint" summary="serial of the configure event"/>
+    </event>
+  </interface>
+
+  <interface name="xdg_toplevel" version="1">
+    <description summary="toplevel surface">
+      This interface defines an xdg_surface role which allows a surface to,
+      among other things, set window-like properties such as maximize,
+      fullscreen, and minimize, set application-specific metadata like title and
+      id, and well as trigger user interactive operations such as interactive
+      resize and move.
+
+      Unmapping an xdg_toplevel means that the surface cannot be shown
+      by the compositor until it is explicitly mapped again.
+      All active operations (e.g., move, resize) are canceled and all
+      attributes (e.g. title, state, stacking, ...) are discarded for
+      an xdg_toplevel surface when it is unmapped.
+
+      Attaching a null buffer to a toplevel unmaps the surface.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the xdg_toplevel">
+	This request destroys the role surface and unmaps the surface;
+	see "Unmapping" behavior in interface section for details.
+      </description>
+    </request>
+
+    <request name="set_parent">
+      <description summary="set the parent of this surface">
+	Set the "parent" of this surface. This surface should be stacked
+	above the parent surface and all other ancestor surfaces.
+
+	Parent windows should be set on dialogs, toolboxes, or other
+	"auxiliary" surfaces, so that the parent is raised when the dialog
+	is raised.
+
+	Setting a null parent for a child window removes any parent-child
+	relationship for the child. Setting a null parent for a window which
+	currently has no parent is a no-op.
+
+	If the parent is unmapped then its children are managed as
+	though the parent of the now-unmapped parent has become the
+	parent of this surface. If no parent exists for the now-unmapped
+	parent then the children are managed as though they have no
+	parent surface.
+      </description>
+      <arg name="parent" type="object" interface="xdg_toplevel" allow-null="true"/>
+    </request>
+
+    <request name="set_title">
+      <description summary="set surface title">
+	Set a short title for the surface.
+
+	This string may be used to identify the surface in a task bar,
+	window list, or other user interface elements provided by the
+	compositor.
+
+	The string must be encoded in UTF-8.
+      </description>
+      <arg name="title" type="string"/>
+    </request>
+
+    <request name="set_app_id">
+      <description summary="set application ID">
+	Set an application identifier for the surface.
+
+	The app ID identifies the general class of applications to which
+	the surface belongs. The compositor can use this to group multiple
+	surfaces together, or to determine how to launch a new application.
+
+	For D-Bus activatable applications, the app ID is used as the D-Bus
+	service name.
+
+	The compositor shell will try to group application surfaces together
+	by their app ID. As a best practice, it is suggested to select app
+	ID's that match the basename of the application's .desktop file.
+	For example, "org.freedesktop.FooViewer" where the .desktop file is
+	"org.freedesktop.FooViewer.desktop".
+
+	See the desktop-entry specification [0] for more details on
+	application identifiers and how they relate to well-known D-Bus
+	names and .desktop files.
+
+	[0] http://standards.freedesktop.org/desktop-entry-spec/
+      </description>
+      <arg name="app_id" type="string"/>
+    </request>
+
+    <request name="show_window_menu">
+      <description summary="show the window menu">
+	Clients implementing client-side decorations might want to show
+	a context menu when right-clicking on the decorations, giving the
+	user a menu that they can use to maximize or minimize the window.
+
+	This request asks the compositor to pop up such a window menu at
+	the given position, relative to the local surface coordinates of
+	the parent surface. There are no guarantees as to what menu items
+	the window menu contains.
+
+	This request must be used in response to some sort of user action
+	like a button press, key press, or touch down event.
+      </description>
+      <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
+      <arg name="serial" type="uint" summary="the serial of the user event"/>
+      <arg name="x" type="int" summary="the x position to pop up the window menu at"/>
+      <arg name="y" type="int" summary="the y position to pop up the window menu at"/>
+    </request>
+
+    <request name="move">
+      <description summary="start an interactive move">
+	Start an interactive, user-driven move of the surface.
+
+	This request must be used in response to some sort of user action
+	like a button press, key press, or touch down event. The passed
+	serial is used to determine the type of interactive move (touch,
+	pointer, etc).
+
+	The server may ignore move requests depending on the state of
+	the surface (e.g. fullscreen or maximized), or if the passed serial
+	is no longer valid.
+
+	If triggered, the surface will lose the focus of the device
+	(wl_pointer, wl_touch, etc) used for the move. It is up to the
+	compositor to visually indicate that the move is taking place, such as
+	updating a pointer cursor, during the move. There is no guarantee
+	that the device focus will return when the move is completed.
+      </description>
+      <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
+      <arg name="serial" type="uint" summary="the serial of the user event"/>
+    </request>
+
+    <enum name="resize_edge">
+      <description summary="edge values for resizing">
+	These values are used to indicate which edge of a surface
+	is being dragged in a resize operation.
+      </description>
+      <entry name="none" value="0"/>
+      <entry name="top" value="1"/>
+      <entry name="bottom" value="2"/>
+      <entry name="left" value="4"/>
+      <entry name="top_left" value="5"/>
+      <entry name="bottom_left" value="6"/>
+      <entry name="right" value="8"/>
+      <entry name="top_right" value="9"/>
+      <entry name="bottom_right" value="10"/>
+    </enum>
+
+    <request name="resize">
+      <description summary="start an interactive resize">
+	Start a user-driven, interactive resize of the surface.
+
+	This request must be used in response to some sort of user action
+	like a button press, key press, or touch down event. The passed
+	serial is used to determine the type of interactive resize (touch,
+	pointer, etc).
+
+	The server may ignore resize requests depending on the state of
+	the surface (e.g. fullscreen or maximized).
+
+	If triggered, the client will receive configure events with the
+	"resize" state enum value and the expected sizes. See the "resize"
+	enum value for more details about what is required. The client
+	must also acknowledge configure events using "ack_configure". After
+	the resize is completed, the client will receive another "configure"
+	event without the resize state.
+
+	If triggered, the surface also will lose the focus of the device
+	(wl_pointer, wl_touch, etc) used for the resize. It is up to the
+	compositor to visually indicate that the resize is taking place,
+	such as updating a pointer cursor, during the resize. There is no
+	guarantee that the device focus will return when the resize is
+	completed.
+
+	The edges parameter specifies how the surface should be resized,
+	and is one of the values of the resize_edge enum. The compositor
+	may use this information to update the surface position for
+	example when dragging the top left corner. The compositor may also
+	use this information to adapt its behavior, e.g. choose an
+	appropriate cursor image.
+      </description>
+      <arg name="seat" type="object" interface="wl_seat" summary="the wl_seat of the user event"/>
+      <arg name="serial" type="uint" summary="the serial of the user event"/>
+      <arg name="edges" type="uint" summary="which edge or corner is being dragged"/>
+    </request>
+
+    <enum name="state">
+      <description summary="types of state on the surface">
+	The different state values used on the surface. This is designed for
+	state values like maximized, fullscreen. It is paired with the
+	configure event to ensure that both the client and the compositor
+	setting the state can be synchronized.
+
+	States set in this way are double-buffered. They will get applied on
+	the next commit.
+      </description>
+      <entry name="maximized" value="1" summary="the surface is maximized">
+	<description summary="the surface is maximized">
+	  The surface is maximized. The window geometry specified in the configure
+	  event must be obeyed by the client.
+	</description>
+      </entry>
+      <entry name="fullscreen" value="2" summary="the surface is fullscreen">
+	<description summary="the surface is fullscreen">
+	  The surface is fullscreen. The window geometry specified in the
+	  configure event is a maximum; the client cannot resize beyond it. For
+	  a surface to cover the whole fullscreened area, the geometry
+	  dimensions must be obeyed by the client. For more details, see
+	  xdg_toplevel.set_fullscreen.
+	</description>
+      </entry>
+      <entry name="resizing" value="3" summary="the surface is being resized">
+	<description summary="the surface is being resized">
+	  The surface is being resized. The window geometry specified in the
+	  configure event is a maximum; the client cannot resize beyond it.
+	  Clients that have aspect ratio or cell sizing configuration can use
+	  a smaller size, however.
+	</description>
+      </entry>
+      <entry name="activated" value="4" summary="the surface is now activated">
+	<description summary="the surface is now activated">
+	  Client window decorations should be painted as if the window is
+	  active. Do not assume this means that the window actually has
+	  keyboard or pointer focus.
+	</description>
+      </entry>
+    </enum>
+
+    <request name="set_max_size">
+      <description summary="set the maximum size">
+	Set a maximum size for the window.
+
+	The client can specify a maximum size so that the compositor does
+	not try to configure the window beyond this size.
+
+	The width and height arguments are in window geometry coordinates.
+	See xdg_surface.set_window_geometry.
+
+	Values set in this way are double-buffered. They will get applied
+	on the next commit.
+
+	The compositor can use this information to allow or disallow
+	different states like maximize or fullscreen and draw accurate
+	animations.
+
+	Similarly, a tiling window manager may use this information to
+	place and resize client windows in a more effective way.
+
+	The client should not rely on the compositor to obey the maximum
+	size. The compositor may decide to ignore the values set by the
+	client and request a larger size.
+
+	If never set, or a value of zero in the request, means that the
+	client has no expected maximum size in the given dimension.
+	As a result, a client wishing to reset the maximum size
+	to an unspecified state can use zero for width and height in the
+	request.
+
+	Requesting a maximum size to be smaller than the minimum size of
+	a surface is illegal and will result in a protocol error.
+
+	The width and height must be greater than or equal to zero. Using
+	strictly negative values for width and height will result in a
+	protocol error.
+      </description>
+      <arg name="width" type="int"/>
+      <arg name="height" type="int"/>
+    </request>
+
+    <request name="set_min_size">
+      <description summary="set the minimum size">
+	Set a minimum size for the window.
+
+	The client can specify a minimum size so that the compositor does
+	not try to configure the window below this size.
+
+	The width and height arguments are in window geometry coordinates.
+	See xdg_surface.set_window_geometry.
+
+	Values set in this way are double-buffered. They will get applied
+	on the next commit.
+
+	The compositor can use this information to allow or disallow
+	different states like maximize or fullscreen and draw accurate
+	animations.
+
+	Similarly, a tiling window manager may use this information to
+	place and resize client windows in a more effective way.
+
+	The client should not rely on the compositor to obey the minimum
+	size. The compositor may decide to ignore the values set by the
+	client and request a smaller size.
+
+	If never set, or a value of zero in the request, means that the
+	client has no expected minimum size in the given dimension.
+	As a result, a client wishing to reset the minimum size
+	to an unspecified state can use zero for width and height in the
+	request.
+
+	Requesting a minimum size to be larger than the maximum size of
+	a surface is illegal and will result in a protocol error.
+
+	The width and height must be greater than or equal to zero. Using
+	strictly negative values for width and height will result in a
+	protocol error.
+      </description>
+      <arg name="width" type="int"/>
+      <arg name="height" type="int"/>
+    </request>
+
+    <request name="set_maximized">
+      <description summary="maximize the window">
+	Maximize the surface.
+
+	After requesting that the surface should be maximized, the compositor
+	will respond by emitting a configure event with the "maximized" state
+	and the required window geometry. The client should then update its
+	content, drawing it in a maximized state, i.e. without shadow or other
+	decoration outside of the window geometry. The client must also
+	acknowledge the configure when committing the new content (see
+	ack_configure).
+
+	It is up to the compositor to decide how and where to maximize the
+	surface, for example which output and what region of the screen should
+	be used.
+
+	If the surface was already maximized, the compositor will still emit
+	a configure event with the "maximized" state.
+
+	If the surface is in a fullscreen state, this request has no direct
+	effect. It will alter the state the surface is returned to when
+	unmaximized if not overridden by the compositor.
+      </description>
+    </request>
+
+    <request name="unset_maximized">
+      <description summary="unmaximize the window">
+	Unmaximize the surface.
+
+	After requesting that the surface should be unmaximized, the compositor
+	will respond by emitting a configure event without the "maximized"
+	state. If available, the compositor will include the window geometry
+	dimensions the window had prior to being maximized in the configure
+	event. The client must then update its content, drawing it in a
+	regular state, i.e. potentially with shadow, etc. The client must also
+	acknowledge the configure when committing the new content (see
+	ack_configure).
+
+	It is up to the compositor to position the surface after it was
+	unmaximized; usually the position the surface had before maximizing, if
+	applicable.
+
+	If the surface was already not maximized, the compositor will still
+	emit a configure event without the "maximized" state.
+
+	If the surface is in a fullscreen state, this request has no direct
+	effect. It will alter the state the surface is returned to when
+	unmaximized if not overridden by the compositor.
+      </description>
+    </request>
+
+    <request name="set_fullscreen">
+      <description summary="set the window as fullscreen on an output">
+	Make the surface fullscreen.
+
+	After requesting that the surface should be fullscreened, the
+	compositor will respond by emitting a configure event with the
+	"fullscreen" state and the fullscreen window geometry. The client must
+	also acknowledge the configure when committing the new content (see
+	ack_configure).
+
+	The output passed by the request indicates the client's preference as
+	to which display it should be set fullscreen on. If this value is NULL,
+	it's up to the compositor to choose which display will be used to map
+	this surface.
+
+	If the surface doesn't cover the whole output, the compositor will
+	position the surface in the center of the output and compensate with
+	with border fill covering the rest of the output. The content of the
+	border fill is undefined, but should be assumed to be in some way that
+	attempts to blend into the surrounding area (e.g. solid black).
+
+	If the fullscreened surface is not opaque, the compositor must make
+	sure that other screen content not part of the same surface tree (made
+	up of subsurfaces, popups or similarly coupled surfaces) are not
+	visible below the fullscreened surface.
+      </description>
+      <arg name="output" type="object" interface="wl_output" allow-null="true"/>
+    </request>
+
+    <request name="unset_fullscreen">
+      <description summary="unset the window as fullscreen">
+	Make the surface no longer fullscreen.
+
+	After requesting that the surface should be unfullscreened, the
+	compositor will respond by emitting a configure event without the
+	"fullscreen" state.
+
+	Making a surface unfullscreen sets states for the surface based on the following:
+	* the state(s) it may have had before becoming fullscreen
+	* any state(s) decided by the compositor
+	* any state(s) requested by the client while the surface was fullscreen
+
+	The compositor may include the previous window geometry dimensions in
+	the configure event, if applicable.
+
+	The client must also acknowledge the configure when committing the new
+	content (see ack_configure).
+      </description>
+    </request>
+
+    <request name="set_minimized">
+      <description summary="set the window as minimized">
+	Request that the compositor minimize your surface. There is no
+	way to know if the surface is currently minimized, nor is there
+	any way to unset minimization on this surface.
+
+	If you are looking to throttle redrawing when minimized, please
+	instead use the wl_surface.frame event for this, as this will
+	also work with live previews on windows in Alt-Tab, Expose or
+	similar compositor features.
+      </description>
+    </request>
+
+    <event name="configure">
+      <description summary="suggest a surface change">
+	This configure event asks the client to resize its toplevel surface or
+	to change its state. The configured state should not be applied
+	immediately. See xdg_surface.configure for details.
+
+	The width and height arguments specify a hint to the window
+	about how its surface should be resized in window geometry
+	coordinates. See set_window_geometry.
+
+	If the width or height arguments are zero, it means the client
+	should decide its own window dimension. This may happen when the
+	compositor needs to configure the state of the surface but doesn't
+	have any information about any previous or expected dimension.
+
+	The states listed in the event specify how the width/height
+	arguments should be interpreted, and possibly how it should be
+	drawn.
+
+	Clients must send an ack_configure in response to this event. See
+	xdg_surface.configure and xdg_surface.ack_configure for details.
+      </description>
+      <arg name="width" type="int"/>
+      <arg name="height" type="int"/>
+      <arg name="states" type="array"/>
+    </event>
+
+    <event name="close">
+      <description summary="surface wants to be closed">
+	The close event is sent by the compositor when the user
+	wants the surface to be closed. This should be equivalent to
+	the user clicking the close button in client-side decorations,
+	if your application has any.
+
+	This is only a request that the user intends to close the
+	window. The client may choose to ignore this request, or show
+	a dialog to ask the user to save their data, etc.
+      </description>
+    </event>
+  </interface>
+
+  <interface name="xdg_popup" version="1">
+    <description summary="short-lived, popup surfaces for menus">
+      A popup surface is a short-lived, temporary surface. It can be used to
+      implement for example menus, popovers, tooltips and other similar user
+      interface concepts.
+
+      A popup can be made to take an explicit grab. See xdg_popup.grab for
+      details.
+
+      When the popup is dismissed, a popup_done event will be sent out, and at
+      the same time the surface will be unmapped. See the xdg_popup.popup_done
+      event for details.
+
+      Explicitly destroying the xdg_popup object will also dismiss the popup and
+      unmap the surface. Clients that want to dismiss the popup when another
+      surface of their own is clicked should dismiss the popup using the destroy
+      request.
+
+      The parent surface must have either the xdg_toplevel or xdg_popup surface
+      role.
+
+      A newly created xdg_popup will be stacked on top of all previously created
+      xdg_popup surfaces associated with the same xdg_toplevel.
+
+      The parent of an xdg_popup must be mapped (see the xdg_surface
+      description) before the xdg_popup itself.
+
+      The x and y arguments passed when creating the popup object specify
+      where the top left of the popup should be placed, relative to the
+      local surface coordinates of the parent surface. See
+      xdg_surface.get_popup. An xdg_popup must intersect with or be at least
+      partially adjacent to its parent surface.
+
+      The client must call wl_surface.commit on the corresponding wl_surface
+      for the xdg_popup state to take effect.
+    </description>
+
+    <enum name="error">
+      <entry name="invalid_grab" value="0"
+	     summary="tried to grab after being mapped"/>
+    </enum>
+
+    <request name="destroy" type="destructor">
+      <description summary="remove xdg_popup interface">
+	This destroys the popup. Explicitly destroying the xdg_popup
+	object will also dismiss the popup, and unmap the surface.
+
+	If this xdg_popup is not the "topmost" popup, a protocol error
+	will be sent.
+      </description>
+    </request>
+
+    <request name="grab">
+      <description summary="make the popup take an explicit grab">
+	This request makes the created popup take an explicit grab. An explicit
+	grab will be dismissed when the user dismisses the popup, or when the
+	client destroys the xdg_popup. This can be done by the user clicking
+	outside the surface, using the keyboard, or even locking the screen
+	through closing the lid or a timeout.
+
+	If the compositor denies the grab, the popup will be immediately
+	dismissed.
+
+	This request must be used in response to some sort of user action like a
+	button press, key press, or touch down event. The serial number of the
+	event should be passed as 'serial'.
+
+	The parent of a grabbing popup must either be an xdg_toplevel surface or
+	another xdg_popup with an explicit grab. If the parent is another
+	xdg_popup it means that the popups are nested, with this popup now being
+	the topmost popup.
+
+	Nested popups must be destroyed in the reverse order they were created
+	in, e.g. the only popup you are allowed to destroy at all times is the
+	topmost one.
+
+	When compositors choose to dismiss a popup, they may dismiss every
+	nested grabbing popup as well. When a compositor dismisses popups, it
+	will follow the same dismissing order as required from the client.
+
+	The parent of a grabbing popup must either be another xdg_popup with an
+	active explicit grab, or an xdg_popup or xdg_toplevel, if there are no
+	explicit grabs already taken.
+
+	If the topmost grabbing popup is destroyed, the grab will be returned to
+	the parent of the popup, if that parent previously had an explicit grab.
+
+	If the parent is a grabbing popup which has already been dismissed, this
+	popup will be immediately dismissed. If the parent is a popup that did
+	not take an explicit grab, an error will be raised.
+
+	During a popup grab, the client owning the grab will receive pointer
+	and touch events for all their surfaces as normal (similar to an
+	"owner-events" grab in X11 parlance), while the top most grabbing popup
+	will always have keyboard focus.
+      </description>
+      <arg name="seat" type="object" interface="wl_seat"
+	   summary="the wl_seat of the user event"/>
+      <arg name="serial" type="uint" summary="the serial of the user event"/>
+    </request>
+
+    <event name="configure">
+      <description summary="configure the popup surface">
+	This event asks the popup surface to configure itself given the
+	configuration. The configured state should not be applied immediately.
+	See xdg_surface.configure for details.
+
+	The x and y arguments represent the position the popup was placed at
+	given the xdg_positioner rule, relative to the upper left corner of the
+	window geometry of the parent surface.
+      </description>
+      <arg name="x" type="int"
+	   summary="x position relative to parent surface window geometry"/>
+      <arg name="y" type="int"
+	   summary="y position relative to parent surface window geometry"/>
+      <arg name="width" type="int" summary="window geometry width"/>
+      <arg name="height" type="int" summary="window geometry height"/>
+    </event>
+
+    <event name="popup_done">
+      <description summary="popup interaction is done">
+	The popup_done event is sent out when a popup is dismissed by the
+	compositor. The client should destroy the xdg_popup object at this
+	point.
+      </description>
+    </event>
+
+  </interface>
+</protocol>
diff --git a/src/client/qwaylandintegration.cpp b/src/client/qwaylandintegration.cpp
index 6ab5f0f20..f05d146c3 100644
--- a/src/client/qwaylandintegration.cpp
+++ b/src/client/qwaylandintegration.cpp
@@ -388,6 +388,7 @@ void QWaylandIntegration::initializeShellIntegration()
     if (!targetKey.isEmpty()) {
         preferredShells << targetKey;
     } else {
+        preferredShells << QLatin1String("xdg-shell");
         preferredShells << QLatin1String("xdg-shell-v6");
         QString useXdgShell = QString::fromLocal8Bit(qgetenv("QT_WAYLAND_USE_XDG_SHELL"));
         if (!useXdgShell.isEmpty() && useXdgShell != QLatin1String("0")) {
diff --git a/src/plugins/shellintegration/shellintegration.pro b/src/plugins/shellintegration/shellintegration.pro
index 9be4e82a5..48b6efa36 100644
--- a/src/plugins/shellintegration/shellintegration.pro
+++ b/src/plugins/shellintegration/shellintegration.pro
@@ -2,6 +2,7 @@ TEMPLATE = subdirs
 
 SUBDIRS += \
     ivi-shell \
+    xdg-shell \
     xdg-shell-v5 \
     xdg-shell-v6 \
     wl-shell \
diff --git a/src/plugins/shellintegration/xdg-shell/main.cpp b/src/plugins/shellintegration/xdg-shell/main.cpp
new file mode 100644
index 000000000..a9ea4bc1e
--- /dev/null
+++ b/src/plugins/shellintegration/xdg-shell/main.cpp
@@ -0,0 +1,68 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwaylandxdgshellintegration_p.h"
+
+#include <QtWaylandClient/private/qwaylandshellintegrationplugin_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWaylandClient {
+
+class QWaylandXdgShellIntegrationPlugin : public QWaylandShellIntegrationPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID QWaylandShellIntegrationFactoryInterface_iid FILE "xdg-shell.json")
+
+public:
+    QWaylandShellIntegration *create(const QString &key, const QStringList &paramList) override;
+};
+
+QWaylandShellIntegration *QWaylandXdgShellIntegrationPlugin::create(const QString &key, const QStringList &paramList)
+{
+    Q_UNUSED(key);
+    Q_UNUSED(paramList);
+    return new QWaylandXdgShellIntegration();
+}
+
+}
+
+QT_END_NAMESPACE
+
+#include "main.moc"
diff --git a/src/plugins/shellintegration/xdg-shell/qwaylandxdgshell.cpp b/src/plugins/shellintegration/xdg-shell/qwaylandxdgshell.cpp
new file mode 100644
index 000000000..4097cecef
--- /dev/null
+++ b/src/plugins/shellintegration/xdg-shell/qwaylandxdgshell.cpp
@@ -0,0 +1,337 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Copyright (C) 2017 Eurogiciel, author: <philippe.coval@eurogiciel.fr>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the config.tests of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwaylandxdgshell_p.h"
+
+#include <QtWaylandClient/private/qwaylanddisplay_p.h>
+#include <QtWaylandClient/private/qwaylandwindow_p.h>
+#include <QtWaylandClient/private/qwaylandinputdevice_p.h>
+#include <QtWaylandClient/private/qwaylandscreen_p.h>
+#include <QtWaylandClient/private/qwaylandabstractdecoration_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWaylandClient {
+
+QWaylandXdgSurface::Toplevel::Toplevel(QWaylandXdgSurface *xdgSurface)
+    : QtWayland::xdg_toplevel(xdgSurface->get_toplevel())
+    , m_xdgSurface(xdgSurface)
+{
+    requestWindowStates(xdgSurface->window()->window()->windowStates());
+}
+
+QWaylandXdgSurface::Toplevel::~Toplevel()
+{
+    if (m_applied.states & Qt::WindowActive) {
+        QWaylandWindow *window = m_xdgSurface->window();
+        window->display()->handleWindowDeactivated(window);
+    }
+    if (isInitialized())
+        destroy();
+}
+
+void QWaylandXdgSurface::Toplevel::applyConfigure()
+{
+    if (!(m_applied.states & (Qt::WindowMaximized|Qt::WindowFullScreen)))
+        m_normalSize = m_xdgSurface->m_window->window()->frameGeometry().size();
+
+    if (m_pending.size.isEmpty() && !m_normalSize.isEmpty())
+        m_pending.size = m_normalSize;
+
+    if ((m_pending.states & Qt::WindowActive) && !(m_applied.states & Qt::WindowActive))
+        m_xdgSurface->m_window->display()->handleWindowActivated(m_xdgSurface->m_window);
+
+    if (!(m_pending.states & Qt::WindowActive) && (m_applied.states & Qt::WindowActive))
+        m_xdgSurface->m_window->display()->handleWindowDeactivated(m_xdgSurface->m_window);
+
+    // TODO: none of the other plugins send WindowActive either, but is it on purpose?
+    Qt::WindowStates statesWithoutActive = m_pending.states & ~Qt::WindowActive;
+
+    m_xdgSurface->m_window->handleWindowStatesChanged(statesWithoutActive);
+    m_xdgSurface->m_window->resizeFromApplyConfigure(m_pending.size);
+    m_applied = m_pending;
+}
+
+void QWaylandXdgSurface::Toplevel::xdg_toplevel_configure(int32_t width, int32_t height, wl_array *states)
+{
+    m_pending.size = QSize(width, height);
+
+    auto *xdgStates = static_cast<uint32_t *>(states->data);
+    size_t numStates = states->size / sizeof(uint32_t);
+
+    m_pending.states = Qt::WindowNoState;
+
+    for (size_t i = 0; i < numStates; i++) {
+        switch (xdgStates[i]) {
+        case XDG_TOPLEVEL_STATE_ACTIVATED:
+            m_pending.states |= Qt::WindowActive;
+            break;
+        case XDG_TOPLEVEL_STATE_MAXIMIZED:
+            m_pending.states |= Qt::WindowMaximized;
+            break;
+        case XDG_TOPLEVEL_STATE_FULLSCREEN:
+            m_pending.states |= Qt::WindowFullScreen;
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+void QWaylandXdgSurface::Toplevel::xdg_toplevel_close()
+{
+    m_xdgSurface->m_window->window()->close();
+}
+
+void QWaylandXdgSurface::Toplevel::requestWindowStates(Qt::WindowStates states)
+{
+    // Re-send what's different from the applied state
+    Qt::WindowStates changedStates = m_applied.states ^ states;
+
+    if (changedStates & Qt::WindowMaximized) {
+        if (states & Qt::WindowMaximized)
+            set_maximized();
+        else
+            unset_maximized();
+    }
+
+    if (changedStates & Qt::WindowFullScreen) {
+        if (states & Qt::WindowFullScreen)
+            set_fullscreen(nullptr);
+        else
+            unset_fullscreen();
+    }
+
+    // Minimized state is not reported by the protocol, so always send it
+    if (states & Qt::WindowMinimized) {
+        set_minimized();
+        m_xdgSurface->window()->handleWindowStatesChanged(states & ~Qt::WindowMinimized);
+    }
+}
+
+QWaylandXdgSurface::Popup::Popup(QWaylandXdgSurface *xdgSurface, QWaylandXdgSurface *parent,
+                                 QtWayland::xdg_positioner *positioner)
+    : xdg_popup(xdgSurface->get_popup(parent->object(), positioner->object()))
+    , m_xdgSurface(xdgSurface)
+{
+}
+
+QWaylandXdgSurface::Popup::~Popup()
+{
+    if (isInitialized())
+        destroy();
+}
+
+void QWaylandXdgSurface::Popup::applyConfigure()
+{
+}
+
+void QWaylandXdgSurface::Popup::xdg_popup_popup_done()
+{
+    m_xdgSurface->m_window->window()->close();
+}
+
+QWaylandXdgSurface::QWaylandXdgSurface(QWaylandXdgShell *shell, ::xdg_surface *surface, QWaylandWindow *window)
+    : QWaylandShellSurface(window)
+    , xdg_surface(surface)
+    , m_shell(shell)
+    , m_window(window)
+{
+}
+
+QWaylandXdgSurface::~QWaylandXdgSurface()
+{
+    if (m_toplevel)
+        xdg_toplevel_destroy(m_toplevel->object());
+    if (m_popup)
+        xdg_popup_destroy(m_popup->object());
+    destroy();
+}
+
+void QWaylandXdgSurface::resize(QWaylandInputDevice *inputDevice, xdg_toplevel_resize_edge edges)
+{
+    Q_ASSERT(m_toplevel && m_toplevel->isInitialized());
+    m_toplevel->resize(inputDevice->wl_seat(), inputDevice->serial(), edges);
+}
+
+void QWaylandXdgSurface::resize(QWaylandInputDevice *inputDevice, enum wl_shell_surface_resize edges)
+{
+    auto xdgEdges = reinterpret_cast<enum xdg_toplevel_resize_edge const * const>(&edges);
+    resize(inputDevice, *xdgEdges);
+}
+
+
+bool QWaylandXdgSurface::move(QWaylandInputDevice *inputDevice)
+{
+    if (m_toplevel && m_toplevel->isInitialized()) {
+        m_toplevel->move(inputDevice->wl_seat(), inputDevice->serial());
+        return true;
+    }
+    return false;
+}
+
+void QWaylandXdgSurface::setTitle(const QString &title)
+{
+    if (m_toplevel)
+        m_toplevel->set_title(title);
+}
+
+void QWaylandXdgSurface::setAppId(const QString &appId)
+{
+    if (m_toplevel)
+        m_toplevel->set_app_id(appId);
+}
+
+void QWaylandXdgSurface::setType(Qt::WindowType type, QWaylandWindow *transientParent)
+{
+    QWaylandDisplay *display = m_window->display();
+    if ((type == Qt::Popup || type == Qt::ToolTip) && transientParent && display->lastInputDevice()) {
+        setPopup(transientParent, display->lastInputDevice(), display->lastInputSerial(), type == Qt::Popup);
+    } else {
+        setToplevel();
+        if (transientParent) {
+            auto parentXdgSurface = static_cast<QWaylandXdgSurface *>(transientParent->shellSurface());
+            if (parentXdgSurface)
+                m_toplevel->set_parent(parentXdgSurface->m_toplevel->object());
+        }
+    }
+}
+
+bool QWaylandXdgSurface::handleExpose(const QRegion &region)
+{
+    if (!m_configured && !region.isEmpty()) {
+        m_exposeRegion = region;
+        return true;
+    }
+    return false;
+}
+
+void QWaylandXdgSurface::applyConfigure()
+{
+    Q_ASSERT(m_pendingConfigureSerial != 0);
+
+    if (m_toplevel)
+        m_toplevel->applyConfigure();
+    if (m_popup)
+        m_popup->applyConfigure();
+
+    m_configured = true;
+    ack_configure(m_pendingConfigureSerial);
+
+    m_pendingConfigureSerial = 0;
+}
+
+bool QWaylandXdgSurface::wantsDecorations() const
+{
+    return m_toplevel && !(m_toplevel->m_pending.states & Qt::WindowFullScreen);
+}
+
+void QWaylandXdgSurface::requestWindowStates(Qt::WindowStates states)
+{
+    if (m_toplevel)
+        m_toplevel->requestWindowStates(states);
+    else
+        qCWarning(lcQpaWayland) << "Non-toplevel surfaces can't request window states";
+}
+
+void QWaylandXdgSurface::setToplevel()
+{
+    Q_ASSERT(!m_toplevel && !m_popup);
+    m_toplevel = new Toplevel(this);
+}
+
+void QWaylandXdgSurface::setPopup(QWaylandWindow *parent, QWaylandInputDevice *device, int serial, bool grab)
+{
+    Q_ASSERT(!m_toplevel && !m_popup);
+
+    auto parentXdgSurface = static_cast<QWaylandXdgSurface *>(parent->shellSurface());
+    auto positioner = new QtWayland::xdg_positioner(m_shell->create_positioner());
+    // set_popup expects a position relative to the parent
+    QPoint transientPos = m_window->geometry().topLeft(); // this is absolute
+    transientPos -= parent->geometry().topLeft();
+    if (parent->decoration()) {
+        transientPos.setX(transientPos.x() + parent->decoration()->margins().left());
+        transientPos.setY(transientPos.y() + parent->decoration()->margins().top());
+    }
+    positioner->set_anchor_rect(transientPos.x(), transientPos.y(), 1, 1);
+    positioner->set_anchor(QtWayland::xdg_positioner::anchor_top_left);
+    positioner->set_gravity(QtWayland::xdg_positioner::gravity_bottom_right);
+    positioner->set_size(m_window->geometry().width(), m_window->geometry().height());
+    m_popup = new Popup(this, parentXdgSurface, positioner);
+    positioner->destroy();
+    delete positioner;
+    if (grab) {
+        m_popup->grab(device->wl_seat(), serial);
+    }
+}
+
+void QWaylandXdgSurface::xdg_surface_configure(uint32_t serial)
+{
+    m_window->applyConfigureWhenPossible();
+    m_pendingConfigureSerial = serial;
+    if (!m_exposeRegion.isEmpty()) {
+        QWindowSystemInterface::handleExposeEvent(m_window->window(), m_exposeRegion);
+        m_exposeRegion = QRegion();
+    }
+}
+
+QWaylandXdgShell::QWaylandXdgShell(struct ::wl_registry *registry, uint32_t id, uint32_t availableVersion)
+    : QtWayland::xdg_wm_base(registry, id, qMin(availableVersion, 1u))
+{
+}
+
+QWaylandXdgShell::~QWaylandXdgShell()
+{
+    destroy();
+}
+
+QWaylandXdgSurface *QWaylandXdgShell::getXdgSurface(QWaylandWindow *window)
+{
+    return new QWaylandXdgSurface(this, get_xdg_surface(window->object()), window);
+}
+
+void QWaylandXdgShell::xdg_wm_base_ping(uint32_t serial)
+{
+    pong(serial);
+}
+
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/shellintegration/xdg-shell/qwaylandxdgshell_p.h b/src/plugins/shellintegration/xdg-shell/qwaylandxdgshell_p.h
new file mode 100644
index 000000000..1b312bd2d
--- /dev/null
+++ b/src/plugins/shellintegration/xdg-shell/qwaylandxdgshell_p.h
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Copyright (C) 2017 Eurogiciel, author: <philippe.coval@eurogiciel.fr>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the config.tests of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWAYLANDXDGSHELL_H
+#define QWAYLANDXDGSHELL_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qwayland-xdg-shell.h"
+
+#include <QtWaylandClient/qtwaylandclientglobal.h>
+#include <QtWaylandClient/private/qwaylandshellsurface_p.h>
+
+#include <QtCore/QSize>
+#include <QtGui/QRegion>
+
+#include <wayland-client.h>
+
+QT_BEGIN_NAMESPACE
+
+class QWindow;
+
+namespace QtWaylandClient {
+
+class QWaylandWindow;
+class QWaylandInputDevice;
+class QWaylandXdgShell;
+
+class Q_WAYLAND_CLIENT_EXPORT QWaylandXdgSurface : public QWaylandShellSurface, public QtWayland::xdg_surface
+{
+    Q_OBJECT
+public:
+    QWaylandXdgSurface(QWaylandXdgShell *shell, ::xdg_surface *surface, QWaylandWindow *window);
+    ~QWaylandXdgSurface() override;
+
+    void resize(QWaylandInputDevice *inputDevice, enum xdg_toplevel_resize_edge edges);
+    void resize(QWaylandInputDevice *inputDevice, enum wl_shell_surface_resize edges) override;
+    bool move(QWaylandInputDevice *inputDevice) override;
+    void setTitle(const QString &title) override;
+    void setAppId(const QString &appId) override;
+
+    void setType(Qt::WindowType type, QWaylandWindow *transientParent) override;
+    bool isExposed() const override { return m_configured; }
+    bool handleExpose(const QRegion &) override;
+    bool handlesActiveState() const { return m_toplevel; }
+    void applyConfigure() override;
+    bool wantsDecorations() const override;
+
+protected:
+    void requestWindowStates(Qt::WindowStates states) override;
+    void xdg_surface_configure(uint32_t serial) override;
+
+private:
+    class Toplevel: public QtWayland::xdg_toplevel
+    {
+    public:
+        Toplevel(QWaylandXdgSurface *xdgSurface);
+        ~Toplevel() override;
+
+        void applyConfigure();
+
+        void xdg_toplevel_configure(int32_t width, int32_t height, wl_array *states) override;
+        void xdg_toplevel_close() override;
+
+        void requestWindowStates(Qt::WindowStates states);
+        struct {
+            QSize size = {0, 0};
+            Qt::WindowStates states = Qt::WindowNoState;
+        }  m_pending, m_applied;
+        QSize m_normalSize;
+
+        QWaylandXdgSurface *m_xdgSurface = nullptr;
+    };
+
+    class Popup : public QtWayland::xdg_popup {
+    public:
+        Popup(QWaylandXdgSurface *xdgSurface, QWaylandXdgSurface *parent, QtWayland::xdg_positioner *positioner);
+        ~Popup() override;
+
+        void applyConfigure();
+        void xdg_popup_popup_done() override;
+
+        QWaylandXdgSurface *m_xdgSurface = nullptr;
+    };
+
+    void setToplevel();
+    void setPopup(QWaylandWindow *parent, QWaylandInputDevice *device, int serial, bool grab);
+
+    QWaylandXdgShell *m_shell = nullptr;
+    QWaylandWindow *m_window = nullptr;
+    Toplevel *m_toplevel = nullptr;
+    Popup *m_popup = nullptr;
+    bool m_configured = false;
+    QRegion m_exposeRegion;
+    uint m_pendingConfigureSerial = 0;
+};
+
+class Q_WAYLAND_CLIENT_EXPORT QWaylandXdgShell : public QtWayland::xdg_wm_base
+{
+public:
+    QWaylandXdgShell(struct ::wl_registry *registry, uint32_t id, uint32_t availableVersion);
+
+    QWaylandXdgSurface *getXdgSurface(QWaylandWindow *window);
+
+    ~QWaylandXdgShell() override;
+
+private:
+    void xdg_wm_base_ping(uint32_t serial) override;
+};
+
+QT_END_NAMESPACE
+
+}
+
+#endif // QWAYLANDXDGSHELL_H
diff --git a/src/plugins/shellintegration/xdg-shell/qwaylandxdgshellintegration.cpp b/src/plugins/shellintegration/xdg-shell/qwaylandxdgshellintegration.cpp
new file mode 100644
index 000000000..54d5b55ed
--- /dev/null
+++ b/src/plugins/shellintegration/xdg-shell/qwaylandxdgshellintegration.cpp
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwaylandxdgshellintegration_p.h"
+
+#include <QtWaylandClient/private/qwaylandwindow_p.h>
+#include <QtWaylandClient/private/qwaylanddisplay_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWaylandClient {
+
+bool QWaylandXdgShellIntegration::initialize(QWaylandDisplay *display)
+{
+    for (QWaylandDisplay::RegistryGlobal global : display->globals()) {
+        if (global.interface == QLatin1String("xdg_wm_base")) {
+            m_xdgShell.reset(new QWaylandXdgShell(display->wl_registry(), global.id, global.version));
+            break;
+        }
+    }
+
+    if (!m_xdgShell) {
+        qCDebug(lcQpaWayland) << "Couldn't find global xdg_wm_base for xdg-shell stable";
+        return false;
+    }
+
+    return QWaylandShellIntegration::initialize(display);
+}
+
+QWaylandShellSurface *QWaylandXdgShellIntegration::createShellSurface(QWaylandWindow *window)
+{
+    return m_xdgShell->getXdgSurface(window);
+}
+
+void QWaylandXdgShellIntegration::handleKeyboardFocusChanged(QWaylandWindow *newFocus, QWaylandWindow *oldFocus)
+{
+    if (newFocus) {
+        auto *xdgSurface = qobject_cast<QWaylandXdgSurface *>(newFocus->shellSurface());
+        if (xdgSurface && !xdgSurface->handlesActiveState())
+            m_display->handleWindowActivated(newFocus);
+    }
+    if (oldFocus && qobject_cast<QWaylandXdgSurface *>(oldFocus->shellSurface())) {
+        auto *xdgSurface = qobject_cast<QWaylandXdgSurface *>(oldFocus->shellSurface());
+        if (xdgSurface && !xdgSurface->handlesActiveState())
+            m_display->handleWindowDeactivated(oldFocus);
+    }
+}
+
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/shellintegration/xdg-shell/qwaylandxdgshellintegration_p.h b/src/plugins/shellintegration/xdg-shell/qwaylandxdgshellintegration_p.h
new file mode 100644
index 000000000..b6caa6c95
--- /dev/null
+++ b/src/plugins/shellintegration/xdg-shell/qwaylandxdgshellintegration_p.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWAYLANDXDGSHELLINTEGRATION_P_H
+#define QWAYLANDXDGSHELLINTEGRATION_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qwaylandxdgshell_p.h"
+
+#include <QtWaylandClient/private/qwaylandshellintegration_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWaylandClient {
+
+class Q_WAYLAND_CLIENT_EXPORT QWaylandXdgShellIntegration : public QWaylandShellIntegration
+{
+public:
+    QWaylandXdgShellIntegration() {}
+    bool initialize(QWaylandDisplay *display) override;
+    QWaylandShellSurface *createShellSurface(QWaylandWindow *window) override;
+    void handleKeyboardFocusChanged(QWaylandWindow *newFocus, QWaylandWindow *oldFocus) override;
+
+private:
+    QScopedPointer<QWaylandXdgShell> m_xdgShell;
+};
+
+}
+
+QT_END_NAMESPACE
+
+#endif // QWAYLANDXDGSHELLINTEGRATION_P_H
diff --git a/src/plugins/shellintegration/xdg-shell/xdg-shell.json b/src/plugins/shellintegration/xdg-shell/xdg-shell.json
new file mode 100644
index 000000000..2de86b8d0
--- /dev/null
+++ b/src/plugins/shellintegration/xdg-shell/xdg-shell.json
@@ -0,0 +1,3 @@
+{
+    "Keys":[ "xdg-shell" ]
+}
diff --git a/src/plugins/shellintegration/xdg-shell/xdg-shell.pro b/src/plugins/shellintegration/xdg-shell/xdg-shell.pro
new file mode 100644
index 000000000..b6d4a9b2e
--- /dev/null
+++ b/src/plugins/shellintegration/xdg-shell/xdg-shell.pro
@@ -0,0 +1,23 @@
+QT += gui-private waylandclient-private
+CONFIG += wayland-scanner
+
+QMAKE_USE += wayland-client
+
+WAYLANDCLIENTSOURCES += \
+    ../../../3rdparty/protocol/xdg-shell.xml
+
+HEADERS += \
+    qwaylandxdgshell_p.h \
+    qwaylandxdgshellintegration_p.h \
+
+SOURCES += \
+    main.cpp \
+    qwaylandxdgshell.cpp \
+    qwaylandxdgshellintegration.cpp \
+
+OTHER_FILES += \
+    xdg-shell.json
+
+PLUGIN_TYPE = wayland-shell-integration
+PLUGIN_CLASS_NAME = QWaylandXdgShellIntegrationPlugin
+load(qt_plugin)