content: // Generated by dart-wayland-scanner
  // https://github.com/your-repo/dart-wayland-scanner
  // XML file : https://gitlab.freedesktop.org/wayland/wayland-protocols/-/raw/main/unstable/xdg-shell/xdg-shell-unstable-v6.xml
  //
  // xdg_shell_unstable_v6 Protocol Copyright: 
  /// 
  /// Copyright © 2008-2013 Kristian Høgsberg
  /// Copyright © 2013      Rafael Antognolli
  /// Copyright © 2013      Jasper St. Pierre
  /// Copyright © 2010-2013 Intel Corporation
  /// 
  /// 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.
  /// 
  
  library client;
  
  import 'package:wayland/wayland.dart';
  import 'package:wayland/protocols/wayland.dart';
  import 'dart:async';
  import 'dart:convert';
  import 'dart:typed_data';
  import 'package:result_dart/result_dart.dart';
  
  /// 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_shell.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_shell object it created.
  /// 
  class ZxdgShellV6PingEvent {
  /// pass this to the pong request
    final int serial;
  
    ZxdgShellV6PingEvent(
  this.serial,
  
  );
  
  @override
  toString(){
  return "ZxdgShellV6PingEvent (serial: $serial)";
  }
  }
  
  typedef ZxdgShellV6PingEventHandler = void Function(ZxdgShellV6PingEvent);
  
  
  /// create desktop-style surfaces
  /// 
  /// xdg_shell allows clients to turn a wl_surface into a "real window"
  /// which can be dragged, resized, stacked, and moved around by the
  /// user. Everything about this interface is suited towards traditional
  /// desktop environments.
  /// 
  class ZxdgShellV6 extends Proxy implements Dispatcher{
    final Context innerContext;
    final version = 1;
  
    ZxdgShellV6(this.innerContext) : super(innerContext.allocateClientId()){
      innerContext.register(this);
    }
  
  
  @override
  toString(){
  return "ZxdgShellV6 {name: 'zxdg_shell_v6', id: '$objectId', version: '1',}";
  }
  
  /// destroy xdg_shell
  /// 
  /// Destroy this xdg_shell object.
  /// 
  /// Destroying a bound xdg_shell object while there are surfaces
  /// still alive created by this xdg_shell object instance is illegal
  /// and will result in a protocol error.
  /// 
    Result<void,Object> destroy() {
  innerContext.unRegister(this);
      logLn("ZxdgShellV6::destroy ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 0]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgShellV6::destroy: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [id]:
    Result<ZxdgPositionerV6,Object> createPositioner() {
    var id =  ZxdgPositionerV6(innerContext);
      logLn("ZxdgShellV6::createPositioner  id: $id");
  var arguments = [id];var argTypes = <WaylandType>[WaylandType.newId];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 1]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([id.objectId]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgShellV6::createPositioner: $e");
     return Failure(e);
      }
      return Success(id);
    }
  
  /// 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.
  /// 
  /// [id]:
  /// [surface]:
    Result<ZxdgSurfaceV6,Object> getXdgSurface(Surface surface) {
    var id =  ZxdgSurfaceV6(innerContext);
      logLn("ZxdgShellV6::getXdgSurface  id: $id surface: $surface");
  var arguments = [id, surface];var argTypes = <WaylandType>[WaylandType.newId, WaylandType.object];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 2]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([id.objectId]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([surface.objectId]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgShellV6::getXdgSurface: $e");
     return Failure(e);
      }
      return Success(id);
    }
  
  /// 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_shell.ping.
  /// 
  /// [serial]: serial of the ping event
    Result<void,Object> pong(int serial) {
      logLn("ZxdgShellV6::pong  serial: $serial");
  var arguments = [serial];var argTypes = <WaylandType>[WaylandType.uint];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 3]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([serial]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgShellV6::pong: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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_shell.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_shell object it created.
  /// 
  /// Event handler for Ping
  /// - [serial]: pass this to the pong request
   void onPing(ZxdgShellV6PingEventHandler handler) {
     _pingHandler = handler;
   }
  
   ZxdgShellV6PingEventHandler? _pingHandler;
  
   @override
   void dispatch(int opcode, int fd, Uint8List data) {
  logLn("ZxdgShellV6.dispatch($opcode, $fd, $data)");
     switch (opcode) {     case 0:
  
         if (_pingHandler != null) {
  var offset = 0;
  final serial = ByteData.view(data.buffer).getUint32(offset, Endian.little);
  offset += 4;
  var event = ZxdgShellV6PingEvent(
  serial,
          );
           _pingHandler!(event);
         }
         break;
     }
   }
  }
  
  /// 
  /// 
  
  enum ZxdgShellV6Error {
  /// given wl_surface has another role
    role("role", 0),/// xdg_shell was destroyed before children
    defunctSurfaces("defunct_surfaces", 1),/// the client tried to map or destroy a non-topmost popup
    notTheTopmostPopup("not_the_topmost_popup", 2),/// the client specified an invalid popup parent surface
    invalidPopupParent("invalid_popup_parent", 3),/// the client provided an invalid surface state
    invalidSurfaceState("invalid_surface_state", 4),/// the client provided an invalid positioner
    invalidPositioner("invalid_positioner", 5);
  const ZxdgShellV6Error(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgShellV6Error {name: $enumName, value: $enumValue}";
  }
  }
  
  
  
  /// 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.
  /// 
  class ZxdgPositionerV6 extends Proxy{
    final Context innerContext;
    final version = 1;
  
    ZxdgPositionerV6(this.innerContext) : super(innerContext.allocateClientId()){
      innerContext.register(this);
    }
  
  
  @override
  toString(){
  return "ZxdgPositionerV6 {name: 'zxdg_positioner_v6', id: '$objectId', version: '1',}";
  }
  
  /// destroy the xdg_positioner object
  /// 
  /// Notify the compositor that the xdg_positioner will no longer be used.
  /// 
    Result<void,Object> destroy() {
  innerContext.unRegister(this);
      logLn("ZxdgPositionerV6::destroy ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 0]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPositionerV6::destroy: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [width]: width of positioned rectangle
  /// [height]: height of positioned rectangle
    Result<void,Object> setSize(int width, int height) {
      logLn("ZxdgPositionerV6::setSize  width: $width height: $height");
  var arguments = [width, height];var argTypes = <WaylandType>[WaylandType.int, WaylandType.int];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 1]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([width]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([height]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPositionerV6::setSize: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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. The rectangle must be at least 1x1 large.
  /// 
  /// 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 zero or negative size is set the invalid_input error is raised.
  /// 
  /// [x]: x position of anchor rectangle
  /// [y]: y position of anchor rectangle
  /// [width]: width of anchor rectangle
  /// [height]: height of anchor rectangle
    Result<void,Object> setAnchorRect(int x, int y, int width, int height) {
      logLn("ZxdgPositionerV6::setAnchorRect  x: $x y: $y width: $width height: $height");
  var arguments = [x, y, width, height];var argTypes = <WaylandType>[WaylandType.int, WaylandType.int, WaylandType.int, WaylandType.int];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 2]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([x]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([y]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([width]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([height]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPositionerV6::setAnchorRect: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// set anchor rectangle anchor edges
  /// 
  /// Defines a set of edges for the anchor rectangle. These are used to
  /// derive an anchor point that the child surface will be positioned
  /// relative to. If two orthogonal edges are specified (e.g. 'top' and
  /// 'left'), then the anchor point will be the intersection of the edges
  /// (e.g. the top left position of the rectangle); 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.
  /// 
  /// If two parallel anchor edges are specified (e.g. 'left' and 'right'),
  /// the invalid_input error is raised.
  /// 
  /// [anchor]: bit mask of anchor edges
    Result<void,Object> setAnchor(int anchor) {
      logLn("ZxdgPositionerV6::setAnchor  anchor: $anchor");
  var arguments = [anchor];var argTypes = <WaylandType>[WaylandType.uint];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 3]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([anchor]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPositionerV6::setAnchor: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// set child surface gravity
  /// 
  /// Defines in what direction a surface should be positioned, relative to
  /// the anchor point of the parent surface. If two orthogonal gravities are
  /// specified (e.g. 'bottom' and 'right'), then the child surface will be
  /// placed in the specified direction; otherwise, the child surface will be
  /// centered over the anchor point on any axis that had no gravity
  /// specified.
  /// 
  /// If two parallel gravities are specified (e.g. 'left' and 'right'), the
  /// invalid_input error is raised.
  /// 
  /// [gravity]: bit mask of gravity directions
    Result<void,Object> setGravity(int gravity) {
      logLn("ZxdgPositionerV6::setGravity  gravity: $gravity");
  var arguments = [gravity];var argTypes = <WaylandType>[WaylandType.uint];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 4]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([gravity]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPositionerV6::setGravity: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [constraint_adjustment]: bit mask of constraint adjustments
    Result<void,Object> setConstraintAdjustment(int constraintAdjustment) {
      logLn("ZxdgPositionerV6::setConstraintAdjustment  constraintAdjustment: $constraintAdjustment");
  var arguments = [constraintAdjustment];var argTypes = <WaylandType>[WaylandType.uint];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 5]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([constraintAdjustment]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPositionerV6::setConstraintAdjustment: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [x]: surface position x offset
  /// [y]: surface position y offset
    Result<void,Object> setOffset(int x, int y) {
      logLn("ZxdgPositionerV6::setOffset  x: $x y: $y");
  var arguments = [x, y];var argTypes = <WaylandType>[WaylandType.int, WaylandType.int];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 6]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([x]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([y]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPositionerV6::setOffset: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  }
  
  /// 
  /// 
  
  enum ZxdgPositionerV6Error {
  /// invalid input provided
    invalidInput("invalid_input", 0);
  const ZxdgPositionerV6Error(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgPositionerV6Error {name: $enumName, value: $enumValue}";
  }
  }
  
  /// 
  /// 
  
  enum ZxdgPositionerV6Anchor {
  /// the center of the anchor rectangle
    none("none", 0),/// the top edge of the anchor rectangle
    top("top", 1),/// the bottom edge of the anchor rectangle
    bottom("bottom", 2),/// the left edge of the anchor rectangle
    left("left", 4),/// the right edge of the anchor rectangle
    right("right", 8);
  const ZxdgPositionerV6Anchor(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgPositionerV6Anchor {name: $enumName, value: $enumValue}";
  }
  }
  
  /// 
  /// 
  
  enum ZxdgPositionerV6Gravity {
  /// center over the anchor edge
    none("none", 0),/// position above the anchor edge
    top("top", 1),/// position below the anchor edge
    bottom("bottom", 2),/// position to the left of the anchor edge
    left("left", 4),/// position to the right of the anchor edge
    right("right", 8);
  const ZxdgPositionerV6Gravity(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgPositionerV6Gravity {name: $enumName, value: $enumValue}";
  }
  }
  
  /// 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.
  /// 
  
  enum ZxdgPositionerV6ConstraintAdjustment {
  /// 
    none("none", 0),/// 
    slideX("slide_x", 1),/// 
    slideY("slide_y", 2),/// 
    flipX("flip_x", 4),/// 
    flipY("flip_y", 8),/// 
    resizeX("resize_x", 16),/// 
    resizeY("resize_y", 32);
  const ZxdgPositionerV6ConstraintAdjustment(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgPositionerV6ConstraintAdjustment {name: $enumName, value: $enumValue}";
  }
  }
  
  
  /// 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.
  /// 
  class ZxdgSurfaceV6ConfigureEvent {
  /// serial of the configure event
    final int serial;
  
    ZxdgSurfaceV6ConfigureEvent(
  this.serial,
  
  );
  
  @override
  toString(){
  return "ZxdgSurfaceV6ConfigureEvent (serial: $serial)";
  }
  }
  
  typedef ZxdgSurfaceV6ConfigureEventHandler = void Function(ZxdgSurfaceV6ConfigureEvent);
  
  
  /// 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.
  /// 
  /// For a 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 and (3) the client has committed a
  /// buffer to the surface.
  /// 
  class ZxdgSurfaceV6 extends Proxy implements Dispatcher{
    final Context innerContext;
    final version = 1;
  
    ZxdgSurfaceV6(this.innerContext) : super(innerContext.allocateClientId()){
      innerContext.register(this);
    }
  
  
  @override
  toString(){
  return "ZxdgSurfaceV6 {name: 'zxdg_surface_v6', id: '$objectId', version: '1',}";
  }
  
  /// destroy the xdg_surface
  /// 
  /// Destroy the xdg_surface object. An xdg_surface must only be destroyed
  /// after its role object has been destroyed. If the role object still
  /// exists when this request is issued, the zxdg_shell_v6.defunct_surfaces
  /// is raised.
  /// 
    Result<void,Object> destroy() {
  innerContext.unRegister(this);
      logLn("ZxdgSurfaceV6::destroy ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 0]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgSurfaceV6::destroy: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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. If the surface already
  /// had a role, the zxdg_shell_v6.role error is raised.
  /// 
  /// See the documentation of xdg_toplevel for more details about what an
  /// xdg_toplevel is and how it is used.
  /// 
  /// [id]:
    Result<ZxdgToplevelV6,Object> getToplevel() {
    var id =  ZxdgToplevelV6(innerContext);
      logLn("ZxdgSurfaceV6::getToplevel  id: $id");
  var arguments = [id];var argTypes = <WaylandType>[WaylandType.newId];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 1]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([id.objectId]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgSurfaceV6::getToplevel: $e");
     return Failure(e);
      }
      return Success(id);
    }
  
  /// 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 the surface already
  /// had a role, the zxdg_shell_v6.role error is raised.
  /// 
  /// See the documentation of xdg_popup for more details about what an
  /// xdg_popup is and how it is used.
  /// 
  /// [id]:
  /// [parent]:
  /// [positioner]:
    Result<ZxdgPopupV6,Object> getPopup(ZxdgSurfaceV6 parent, ZxdgPositionerV6 positioner) {
    var id =  ZxdgPopupV6(innerContext);
      logLn("ZxdgSurfaceV6::getPopup  id: $id parent: $parent positioner: $positioner");
  var arguments = [id, parent, positioner];var argTypes = <WaylandType>[WaylandType.newId, WaylandType.object, WaylandType.object];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 2]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([id.objectId]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([parent.objectId]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([positioner.objectId]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgSurfaceV6::getPopup: $e");
     return Failure(e);
      }
      return Success(id);
    }
  
  /// 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 state, see wl_surface.commit.
  /// 
  /// 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.
  /// 
  /// [x]:
  /// [y]:
  /// [width]:
  /// [height]:
    Result<void,Object> setWindowGeometry(int x, int y, int width, int height) {
      logLn("ZxdgSurfaceV6::setWindowGeometry  x: $x y: $y width: $width height: $height");
  var arguments = [x, y, width, height];var argTypes = <WaylandType>[WaylandType.int, WaylandType.int, WaylandType.int, WaylandType.int];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 3]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([x]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([y]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([width]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([height]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgSurfaceV6::setWindowGeometry: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// If an invalid serial is used, the zxdg_shell_v6.invalid_surface_state
  /// error is raised.
  /// 
  /// [serial]: the serial from the configure event
    Result<void,Object> ackConfigure(int serial) {
      logLn("ZxdgSurfaceV6::ackConfigure  serial: $serial");
  var arguments = [serial];var argTypes = <WaylandType>[WaylandType.uint];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 4]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([serial]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgSurfaceV6::ackConfigure: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// Event handler for Configure
  /// - [serial]: serial of the configure event
   void onConfigure(ZxdgSurfaceV6ConfigureEventHandler handler) {
     _configureHandler = handler;
   }
  
   ZxdgSurfaceV6ConfigureEventHandler? _configureHandler;
  
   @override
   void dispatch(int opcode, int fd, Uint8List data) {
  logLn("ZxdgSurfaceV6.dispatch($opcode, $fd, $data)");
     switch (opcode) {     case 0:
  
         if (_configureHandler != null) {
  var offset = 0;
  final serial = ByteData.view(data.buffer).getUint32(offset, Endian.little);
  offset += 4;
  var event = ZxdgSurfaceV6ConfigureEvent(
  serial,
          );
           _configureHandler!(event);
         }
         break;
     }
   }
  }
  
  /// 
  /// 
  
  enum ZxdgSurfaceV6Error {
  /// 
    notConstructed("not_constructed", 1),/// 
    alreadyConstructed("already_constructed", 2),/// 
    unconfiguredBuffer("unconfigured_buffer", 3);
  const ZxdgSurfaceV6Error(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgSurfaceV6Error {name: $enumName, value: $enumValue}";
  }
  }
  
  
  /// 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.
  /// 
  class ZxdgToplevelV6ConfigureEvent {
  /// 
    final int width;
  
  /// 
    final int height;
  
  /// 
    final List<int> states;
  
    ZxdgToplevelV6ConfigureEvent(
  this.width,
  
  this.height,
  
  this.states,
  
  );
  
  @override
  toString(){
  return "ZxdgToplevelV6ConfigureEvent (width: $width, height: $height, states: $states)";
  }
  }
  
  typedef ZxdgToplevelV6ConfigureEventHandler = void Function(ZxdgToplevelV6ConfigureEvent);
  
  /// 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.
  /// 
  class ZxdgToplevelV6CloseEvent {
    ZxdgToplevelV6CloseEvent(
  );
  
  @override
  toString(){
  return "ZxdgToplevelV6CloseEvent ()";
  }
  }
  
  typedef ZxdgToplevelV6CloseEventHandler = void Function(ZxdgToplevelV6CloseEvent);
  
  
  /// 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.
  /// 
  class ZxdgToplevelV6 extends Proxy implements Dispatcher{
    final Context innerContext;
    final version = 1;
  
    ZxdgToplevelV6(this.innerContext) : super(innerContext.allocateClientId()){
      innerContext.register(this);
    }
  
  
  @override
  toString(){
  return "ZxdgToplevelV6 {name: 'zxdg_toplevel_v6', id: '$objectId', version: '1',}";
  }
  
  /// destroy the xdg_toplevel
  /// 
  /// Unmap and destroy the window. The window will be effectively
  /// hidden from the user's point of view, and all state like
  /// maximization, fullscreen, and so on, will be lost.
  /// 
    Result<void,Object> destroy() {
  innerContext.unRegister(this);
      logLn("ZxdgToplevelV6::destroy ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 0]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::destroy: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// set the parent of this surface
  /// 
  /// Set the "parent" of this surface. This window should be stacked
  /// above a parent. The parent surface must be mapped as long as this
  /// surface is mapped.
  /// 
  /// Parent windows should be set on dialogs, toolboxes, or other
  /// "auxiliary" surfaces, so that the parent is raised when the dialog
  /// is raised.
  /// 
  /// [parent]:
    Result<void,Object> setParent(ZxdgToplevelV6 parent) {
      logLn("ZxdgToplevelV6::setParent  parent: $parent");
  var arguments = [parent];var argTypes = <WaylandType>[WaylandType.object];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 1]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([parent.objectId]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::setParent: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [title]:
    Result<void,Object> setTitle(String title) {
      logLn("ZxdgToplevelV6::setTitle  title: $title");
  var arguments = [title];var argTypes = <WaylandType>[WaylandType.string];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 2]).buffer.asUint8List());
      final titleBytes = utf8.encode(title);
      bytesBuilder.add(Uint32List.fromList([titleBytes.length + 1]).buffer.asUint8List());
      bytesBuilder.add(titleBytes);
      bytesBuilder.add([0]); // Null terminator
      while (bytesBuilder.length % 4 != 0) { bytesBuilder.add([0]); } // Padding
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::setTitle: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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/
  /// 
  /// [app_id]:
    Result<void,Object> setAppId(String appId) {
      logLn("ZxdgToplevelV6::setAppId  appId: $appId");
  var arguments = [appId];var argTypes = <WaylandType>[WaylandType.string];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 3]).buffer.asUint8List());
      final appIdBytes = utf8.encode(appId);
      bytesBuilder.add(Uint32List.fromList([appIdBytes.length + 1]).buffer.asUint8List());
      bytesBuilder.add(appIdBytes);
      bytesBuilder.add([0]); // Null terminator
      while (bytesBuilder.length % 4 != 0) { bytesBuilder.add([0]); } // Padding
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::setAppId: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [seat]: the wl_seat of the user event
  /// [serial]: the serial of the user event
  /// [x]: the x position to pop up the window menu at
  /// [y]: the y position to pop up the window menu at
    Result<void,Object> showWindowMenu(Seat seat, int serial, int x, int y) {
      logLn("ZxdgToplevelV6::showWindowMenu  seat: $seat serial: $serial x: $x y: $y");
  var arguments = [seat, serial, x, y];var argTypes = <WaylandType>[WaylandType.object, WaylandType.uint, WaylandType.int, WaylandType.int];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 4]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([seat.objectId]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([serial]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([x]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([y]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::showWindowMenu: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [seat]: the wl_seat of the user event
  /// [serial]: the serial of the user event
    Result<void,Object> move(Seat seat, int serial) {
      logLn("ZxdgToplevelV6::move  seat: $seat serial: $serial");
  var arguments = [seat, serial];var argTypes = <WaylandType>[WaylandType.object, WaylandType.uint];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 5]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([seat.objectId]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([serial]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::move: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [seat]: the wl_seat of the user event
  /// [serial]: the serial of the user event
  /// [edges]: which edge or corner is being dragged
    Result<void,Object> resize(Seat seat, int serial, int edges) {
      logLn("ZxdgToplevelV6::resize  seat: $seat serial: $serial edges: $edges");
  var arguments = [seat, serial, edges];var argTypes = <WaylandType>[WaylandType.object, WaylandType.uint, WaylandType.uint];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 6]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([seat.objectId]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([serial]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([edges]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::resize: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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, see wl_surface.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 the
  /// zxdg_shell_v6.invalid_surface_state error being raised.
  /// 
  /// [width]:
  /// [height]:
    Result<void,Object> setMaxSize(int width, int height) {
      logLn("ZxdgToplevelV6::setMaxSize  width: $width height: $height");
  var arguments = [width, height];var argTypes = <WaylandType>[WaylandType.int, WaylandType.int];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 7]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([width]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([height]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::setMaxSize: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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, see wl_surface.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 the
  /// zxdg_shell_v6.invalid_surface_state error being raised.
  /// 
  /// [width]:
  /// [height]:
    Result<void,Object> setMinSize(int width, int height) {
      logLn("ZxdgToplevelV6::setMinSize  width: $width height: $height");
  var arguments = [width, height];var argTypes = <WaylandType>[WaylandType.int, WaylandType.int];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 8]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([width]).buffer.asUint8List());
      bytesBuilder.add(Int32List.fromList([height]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::setMinSize: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// Note that unrelated compositor side state changes may cause
  /// configure events to be emitted at any time, meaning trying to
  /// match this request to a specific future configure event is
  /// futile.
  /// 
    Result<void,Object> setMaximized() {
      logLn("ZxdgToplevelV6::setMaximized ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 9]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::setMaximized: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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
  /// request. 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.
  /// 
  /// Note that unrelated changes in the state of compositor may cause
  /// configure events to be emitted by the compositor between processing
  /// this request and emitting corresponding configure event, so trying
  /// to match the request with the event is futile.
  /// 
    Result<void,Object> unsetMaximized() {
      logLn("ZxdgToplevelV6::unsetMaximized ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 10]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::unsetMaximized: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// set the window as fullscreen on a monitor
  /// 
  /// Make the surface fullscreen.
  /// 
  /// You can specify an output that you would prefer to be fullscreen.
  /// 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
  /// black borders filling the rest of the output.
  /// 
  /// [output]:
    Result<void,Object> setFullscreen(Output output) {
      logLn("ZxdgToplevelV6::setFullscreen  output: $output");
  var arguments = [output];var argTypes = <WaylandType>[WaylandType.object];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 11]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([output.objectId]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::setFullscreen: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 
  /// 
    Result<void,Object> unsetFullscreen() {
      logLn("ZxdgToplevelV6::unsetFullscreen ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 12]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::unsetFullscreen: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
    Result<void,Object> setMinimized() {
      logLn("ZxdgToplevelV6::setMinimized ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 13]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgToplevelV6::setMinimized: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// Event handler for Configure
  /// - [width]:
  /// - [height]:
  /// - [states]:
   void onConfigure(ZxdgToplevelV6ConfigureEventHandler handler) {
     _configureHandler = handler;
   }
  
   ZxdgToplevelV6ConfigureEventHandler? _configureHandler;
  
  /// 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.
  /// 
  /// Event handler for Close
   void onClose(ZxdgToplevelV6CloseEventHandler handler) {
     _closeHandler = handler;
   }
  
   ZxdgToplevelV6CloseEventHandler? _closeHandler;
  
   @override
   void dispatch(int opcode, int fd, Uint8List data) {
  logLn("ZxdgToplevelV6.dispatch($opcode, $fd, $data)");
     switch (opcode) {     case 0:
  
         if (_configureHandler != null) {
  var offset = 0;
  final width = ByteData.view(data.buffer).getInt32(offset, Endian.little);
  offset += 4;
  final height = ByteData.view(data.buffer).getInt32(offset, Endian.little);
  offset += 4;
  final states = getArray(data, offset);
  var arrayLength = ByteData.view(data.buffer).getUint32(offset, Endian.little);
  offset += 4 + arrayLength;
  while (offset % 4 != 0) { offset++; } // Padding
  var event = ZxdgToplevelV6ConfigureEvent(
  width,
  height,
  states,
          );
           _configureHandler!(event);
         }
         break;
       case 1:
  
         if (_closeHandler != null) {
           _closeHandler!(ZxdgToplevelV6CloseEvent());
         }
         break;
     }
   }
  }
  
  /// edge values for resizing
  /// 
  /// These values are used to indicate which edge of a surface
  /// is being dragged in a resize operation.
  /// 
  
  enum ZxdgToplevelV6ResizeEdge {
  /// 
    none("none", 0),/// 
    top("top", 1),/// 
    bottom("bottom", 2),/// 
    left("left", 4),/// 
    topLeft("top_left", 5),/// 
    bottomLeft("bottom_left", 6),/// 
    right("right", 8),/// 
    topRight("top_right", 9),/// 
    bottomRight("bottom_right", 10);
  const ZxdgToplevelV6ResizeEdge(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgToplevelV6ResizeEdge {name: $enumName, value: $enumValue}";
  }
  }
  
  /// 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, see wl_surface.commit.
  /// 
  
  enum ZxdgToplevelV6State {
  /// the surface is maximized
    maximized("maximized", 1),/// the surface is fullscreen
    fullscreen("fullscreen", 2),/// the surface is being resized
    resizing("resizing", 3),/// the surface is now activated
    activated("activated", 4);
  const ZxdgToplevelV6State(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgToplevelV6State {name: $enumName, value: $enumValue}";
  }
  }
  
  
  /// 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.
  /// 
  class ZxdgPopupV6ConfigureEvent {
  /// x position relative to parent surface window geometry
    final int x;
  
  /// y position relative to parent surface window geometry
    final int y;
  
  /// window geometry width
    final int width;
  
  /// window geometry height
    final int height;
  
    ZxdgPopupV6ConfigureEvent(
  this.x,
  
  this.y,
  
  this.width,
  
  this.height,
  
  );
  
  @override
  toString(){
  return "ZxdgPopupV6ConfigureEvent (x: $x, y: $y, width: $width, height: $height)";
  }
  }
  
  typedef ZxdgPopupV6ConfigureEventHandler = void Function(ZxdgPopupV6ConfigureEvent);
  
  /// 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.
  /// 
  class ZxdgPopupV6PopupDoneEvent {
    ZxdgPopupV6PopupDoneEvent(
  );
  
  @override
  toString(){
  return "ZxdgPopupV6PopupDoneEvent ()";
  }
  }
  
  typedef ZxdgPopupV6PopupDoneEventHandler = void Function(ZxdgPopupV6PopupDoneEvent);
  
  
  /// 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.
  /// 
  class ZxdgPopupV6 extends Proxy implements Dispatcher{
    final Context innerContext;
    final version = 1;
  
    ZxdgPopupV6(this.innerContext) : super(innerContext.allocateClientId()){
      innerContext.register(this);
    }
  
  
  @override
  toString(){
  return "ZxdgPopupV6 {name: 'zxdg_popup_v6', id: '$objectId', version: '1',}";
  }
  
  /// 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.
  /// 
    Result<void,Object> destroy() {
  innerContext.unRegister(this);
      logLn("ZxdgPopupV6::destroy ");
  var arguments = [];var argTypes = <WaylandType>[];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 0]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPopupV6::destroy: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// [seat]: the wl_seat of the user event
  /// [serial]: the serial of the user event
    Result<void,Object> grab(Seat seat, int serial) {
      logLn("ZxdgPopupV6::grab  seat: $seat serial: $serial");
  var arguments = [seat, serial];var argTypes = <WaylandType>[WaylandType.object, WaylandType.uint];
  var calclulatedSize  = calculateSize(argTypes, arguments);
  final bytesBuilder = BytesBuilder();
  bytesBuilder.add(Uint32List.fromList([objectId, (calclulatedSize << 16) | 1]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([seat.objectId]).buffer.asUint8List());
      bytesBuilder.add(Uint32List.fromList([serial]).buffer.asUint8List());
      try{
      innerContext.sendMessage(bytesBuilder.toBytes(), );
      }catch (e) {
        logLn("Exception in ZxdgPopupV6::grab: $e");
     return Failure(e);
      }
      return Success(Object());
    }
  
  /// 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.
  /// 
  /// Event handler for Configure
  /// - [x]: x position relative to parent surface window geometry
  /// - [y]: y position relative to parent surface window geometry
  /// - [width]: window geometry width
  /// - [height]: window geometry height
   void onConfigure(ZxdgPopupV6ConfigureEventHandler handler) {
     _configureHandler = handler;
   }
  
   ZxdgPopupV6ConfigureEventHandler? _configureHandler;
  
  /// 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.
  /// 
  /// Event handler for PopupDone
   void onPopupDone(ZxdgPopupV6PopupDoneEventHandler handler) {
     _popupDoneHandler = handler;
   }
  
   ZxdgPopupV6PopupDoneEventHandler? _popupDoneHandler;
  
   @override
   void dispatch(int opcode, int fd, Uint8List data) {
  logLn("ZxdgPopupV6.dispatch($opcode, $fd, $data)");
     switch (opcode) {     case 0:
  
         if (_configureHandler != null) {
  var offset = 0;
  final x = ByteData.view(data.buffer).getInt32(offset, Endian.little);
  offset += 4;
  final y = ByteData.view(data.buffer).getInt32(offset, Endian.little);
  offset += 4;
  final width = ByteData.view(data.buffer).getInt32(offset, Endian.little);
  offset += 4;
  final height = ByteData.view(data.buffer).getInt32(offset, Endian.little);
  offset += 4;
  var event = ZxdgPopupV6ConfigureEvent(
  x,
  y,
  width,
  height,
          );
           _configureHandler!(event);
         }
         break;
       case 1:
  
         if (_popupDoneHandler != null) {
           _popupDoneHandler!(ZxdgPopupV6PopupDoneEvent());
         }
         break;
     }
   }
  }
  
  /// 
  /// 
  
  enum ZxdgPopupV6Error {
  /// tried to grab after being mapped
    invalidGrab("invalid_grab", 0);
  const ZxdgPopupV6Error(this.enumName, this.enumValue);
  final int enumValue;
  final String enumName;
  @override
  toString(){
  return "ZxdgPopupV6Error {name: $enumName, value: $enumValue}";
  }
  }
  
  