Warning, /libraries/plasma-wayland-protocols/src/protocols/server-decoration.xml is written in an unsupported language. File is not indexed.

 <?xml version="1.0" encoding="UTF-8"?>
 <protocol name="server_decoration">
   <copyright><![CDATA[
     SPDX-FileCopyrightText: 2015 Martin Gräßlin
 
     SPDX-License-Identifier: LGPL-2.1-or-later
   ]]></copyright>
   <interface  name="org_kde_kwin_server_decoration_manager" version="1">
       <description summary="Server side window decoration manager">
         This interface allows to coordinate whether the server should create
         a server-side window decoration around a wl_surface representing a
         shell surface (wl_shell_surface or similar). By announcing support
         for this interface the server indicates that it supports server
         side decorations.
 
         Use in conjunction with zxdg_decoration_manager_v1 is undefined.
       </description>
       <request name="create">
         <description summary="Create a server-side decoration object for a given surface">
             When a client creates a server-side decoration object it indicates
             that it supports the protocol. The client is supposed to tell the
             server whether it wants server-side decorations or will provide
             client-side decorations.
 
             If the client does not create a server-side decoration object for
             a surface the server interprets this as lack of support for this
             protocol and considers it as client-side decorated. Nevertheless a
             client-side decorated surface should use this protocol to indicate
             to the server that it does not want a server-side deco.
         </description>
         <arg name="id" type="new_id" interface="org_kde_kwin_server_decoration"/>
         <arg name="surface" type="object" interface="wl_surface"/>
       </request>
       <enum name="mode">
             <description summary="Possible values to use in request_mode and the event mode."/>
             <entry name="None" value="0" summary="Undecorated: The surface is not decorated at all, neither server nor client-side. An example is a popup surface which should not be decorated."/>
             <entry name="Client" value="1" summary="Client-side decoration: The decoration is part of the surface and the client."/>
             <entry name="Server" value="2" summary="Server-side decoration: The server embeds the surface into a decoration frame."/>
       </enum>
       <event name="default_mode">
           <description summary="The default mode used on the server">
               This event is emitted directly after binding the interface. It contains
               the default mode for the decoration. When a new server decoration object
               is created this new object will be in the default mode until the first
               request_mode is requested.
 
               The server may change the default mode at any time.
           </description>
           <arg name="mode" type="uint" summary="The default decoration mode applied to newly created server decorations."/>
       </event>
   </interface>
   <interface name="org_kde_kwin_server_decoration" version="1">
       <request name="release" type="destructor">
         <description summary="release the server decoration object"/>
       </request>
       <enum name="mode">
             <description summary="Possible values to use in request_mode and the event mode."/>
             <entry name="None" value="0" summary="Undecorated: The surface is not decorated at all, neither server nor client-side. An example is a popup surface which should not be decorated."/>
             <entry name="Client" value="1" summary="Client-side decoration: The decoration is part of the surface and the client."/>
             <entry name="Server" value="2" summary="Server-side decoration: The server embeds the surface into a decoration frame."/>
       </enum>
       <request name="request_mode">
           <description summary="The decoration mode the surface wants to use."/>
           <arg name="mode" type="uint" summary="The mode this surface wants to use."/>
       </request>
       <event name="mode">
           <description summary="The new decoration mode applied by the server">
               This event is emitted directly after the decoration is created and
               represents the base decoration policy by the server. E.g. a server
               which wants all surfaces to be client-side decorated will send Client,
               a server which wants server-side decoration will send Server.
 
               The client can request a different mode through the decoration request.
               The server will acknowledge this by another event with the same mode. So
               even if a server prefers server-side decoration it's possible to force a
               client-side decoration.
 
               The server may emit this event at any time. In this case the client can
               again request a different mode. It's the responsibility of the server to
               prevent a feedback loop.
           </description>
           <arg name="mode" type="uint" summary="The decoration mode applied to the surface by the server."/>
       </event>
   </interface>
 </protocol>