autocommit 2022-01-04 15:30:21 CET

Cargo.lock

@@ -212,6 +212,7 @@ dependencies = [
  "thiserror",
  "uapi",
  "waker-fn",
+ "xcb-dl",
 ]
 
 [[package]]
@@ -226,6 +227,16 @@ version = "0.2.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b03d17f364a3a042d5e5d46b053bbbf82c92c9430c592dd4c064dc6ee997125"
 
+[[package]]
+name = "libloading"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "afe203d669ec979b7128619bae5a63b7b42e9203c1b29146079ee05e2f604b52"
+dependencies = [
+ "cfg-if 1.0.0",
+ "winapi",
+]
+
 [[package]]
 name = "log"
 version = "0.4.14"
@@ -440,3 +451,13 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "xcb-dl"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ce37e57249f12cbdf43844a3c9b3162f528ec27a1dc1dd7c6f46826063f51e8"
+dependencies = [
+ "libc",
+ "libloading",
+]

Cargo.toml

@@ -23,3 +23,4 @@ waker-fn = "1.1.0"
 num-traits = "0.2.14"
 num-derive = "0.3.3"
 bitflags = "1.3.2"
+xcb-dl = "0.2.0"

src/client/mod.rs

@@ -3,16 +3,16 @@ use crate::client::objects::Objects;
 use crate::ifs::wl_callback::WlCallback;
 use crate::ifs::wl_compositor::{WlCompositorError, WlCompositorObj};
 use crate::ifs::wl_display::{WlDisplay, WlDisplayError};
-use crate::ifs::wl_region::{WlRegion, WlRegionError};
+use crate::ifs::wl_region::{WlRegion, WlRegionError, WlRegionId};
-use crate::ifs::wl_registry::{WlRegistry, WlRegistryError};
+use crate::ifs::wl_registry::{WlRegistry, WlRegistryError, WlRegistryId};
 use crate::ifs::wl_shm::{WlShmError, WlShmObj};
 use crate::ifs::wl_shm_pool::{WlShmPool, WlShmPoolError};
 use crate::ifs::wl_subcompositor::{WlSubcompositorError, WlSubcompositorObj};
 use crate::ifs::wl_surface::wl_subsurface::{WlSubsurface, WlSubsurfaceError};
-use crate::ifs::wl_surface::xdg_surface::xdg_popup::XdgPopupError;
+use crate::ifs::wl_surface::xdg_surface::xdg_popup::{XdgPopup, XdgPopupError};
-use crate::ifs::wl_surface::xdg_surface::xdg_toplevel::XdgToplevelError;
+use crate::ifs::wl_surface::xdg_surface::xdg_toplevel::{XdgToplevel, XdgToplevelError};
-use crate::ifs::wl_surface::xdg_surface::{XdgSurface, XdgSurfaceError};
+use crate::ifs::wl_surface::xdg_surface::{XdgSurface, XdgSurfaceError, XdgSurfaceId};
-use crate::ifs::wl_surface::{WlSurface, WlSurfaceError};
+use crate::ifs::wl_surface::{WlSurface, WlSurfaceError, WlSurfaceId};
 use crate::ifs::xdg_positioner::{XdgPositioner, XdgPositionerError};
 use crate::ifs::xdg_wm_base::{XdgWmBaseError, XdgWmBaseObj};
 use crate::object::{Object, ObjectId, WL_DISPLAY_ID};
@@ -30,6 +30,7 @@ use std::mem;
 use std::rc::Rc;
 use thiserror::Error;
 use uapi::OwnedFd;
+use crate::ifs::wl_buffer::{WlBuffer, WlBufferError};
 
 mod objects;
 mod tasks;
@@ -54,10 +55,12 @@ pub enum ClientError {
     OutBufferOverflow,
     #[error("The requested client {0} does not exist")]
     ClientDoesNotExist(ClientId),
-    #[error("There is no region with id {0}")]
+    #[error("There is no wl_region with id {0}")]
-    RegionDoesNotExist(ObjectId),
+    RegionDoesNotExist(WlRegionId),
-    #[error("There is no surface with id {0}")]
+    #[error("There is no wl_surface with id {0}")]
-    SurfaceDoesNotExist(ObjectId),
+    SurfaceDoesNotExist(WlSurfaceId),
+    #[error("There is no xdg_surface with id {0}")]
+    XdgSurfaceDoesNotExist(XdgSurfaceId),
     #[error("Cannot parse the message")]
     ParserError(#[source] Box<MsgParserError>),
     #[error("Server tried to allocate more than 0x1_00_00_00 ids")]
@@ -100,6 +103,8 @@ pub enum ClientError {
     XdgToplevelError(#[source] Box<XdgToplevelError>),
     #[error("An error occurred in a `xdg_wm_base`")]
     XdgWmBaseError(#[source] Box<XdgWmBaseError>),
+    #[error("An error occurred in a `wl_buffer`")]
+    WlBufferError(#[source] Box<WlBufferError>),
     #[error("Object {0} is not a display")]
     NotADisplay(ObjectId),
 }
@@ -119,6 +124,7 @@ efrom!(ClientError, XdgPositionerError, XdgPositionerError);
 efrom!(ClientError, XdgWmBaseError, XdgWmBaseError);
 efrom!(ClientError, XdgToplevelError, XdgToplevelError);
 efrom!(ClientError, XdgPopupError, XdgPopupError);
+efrom!(ClientError, WlBufferError, WlBufferError);
 
 impl ClientError {
     fn peer_closed(&self) -> bool {
@@ -353,20 +359,27 @@ impl Client {
         Ok(())
     }
 
-    pub fn get_region(&self, id: ObjectId) -> Result<Rc<WlRegion>, ClientError> {
+    pub fn get_region(&self, id: WlRegionId) -> Result<Rc<WlRegion>, ClientError> {
         match self.objects.regions.get(&id) {
             Some(r) => Ok(r),
             _ => Err(ClientError::RegionDoesNotExist(id)),
         }
     }
 
-    pub fn get_surface(&self, id: ObjectId) -> Result<Rc<WlSurface>, ClientError> {
+    pub fn get_surface(&self, id: WlSurfaceId) -> Result<Rc<WlSurface>, ClientError> {
         match self.objects.surfaces.get(&id) {
             Some(r) => Ok(r),
             _ => Err(ClientError::SurfaceDoesNotExist(id)),
         }
     }
 
+    pub fn get_xdg_surface(&self, id: XdgSurfaceId) -> Result<Rc<XdgSurface>, ClientError> {
+        match self.objects.xdg_surfaces.get(&id) {
+            Some(r) => Ok(r),
+            _ => Err(ClientError::XdgSurfaceDoesNotExist(id)),
+        }
+    }
+
     fn simple_add_obj<T: Object>(&self, obj: &Rc<T>, client: bool) -> Result<(), ClientError> {
         if client {
             self.objects.add_client_object(obj.clone())
@@ -383,7 +396,7 @@ impl Client {
         self.objects.remove_obj(self, id)
     }
 
-    pub fn lock_registries(&self) -> RefMut<AHashMap<ObjectId, Rc<WlRegistry>>> {
+    pub fn lock_registries(&self) -> RefMut<AHashMap<WlRegistryId, Rc<WlRegistry>>> {
         self.objects.registries()
     }
 
@@ -438,7 +451,9 @@ simple_add_obj!(WlShmPool);
 simple_add_obj!(WlSubcompositorObj);
 simple_add_obj!(WlSubsurface);
 simple_add_obj!(XdgPositioner);
-simple_add_obj!(XdgSurface);
+simple_add_obj!(XdgToplevel);
+simple_add_obj!(XdgPopup);
+simple_add_obj!(WlBuffer);
 
 macro_rules! dedicated_add_obj {
     ($ty:ty, $field:ident) => {
@@ -447,11 +462,11 @@ macro_rules! dedicated_add_obj {
 
             fn add_obj(&self, obj: &Rc<$ty>, client: bool) -> Result<(), ClientError> {
                 self.simple_add_obj(obj, client)?;
-                self.objects.$field.set(obj.id(), obj.clone());
+                self.objects.$field.set(obj.id().into(), obj.clone());
                 Ok(())
             }
             fn remove_obj<'a>(&'a self, obj: &'a $ty) -> Self::RemoveObj<'a> {
-                self.objects.$field.remove(&obj.id());
+                self.objects.$field.remove(&obj.id().into());
                 self.simple_remove_obj(obj.id())
             }
         }
@@ -461,3 +476,4 @@ macro_rules! dedicated_add_obj {
 dedicated_add_obj!(WlRegion, regions);
 dedicated_add_obj!(WlSurface, surfaces);
 dedicated_add_obj!(XdgWmBaseObj, xdg_wm_bases);
+dedicated_add_obj!(XdgSurface, xdg_surfaces);

src/client/objects.rs

@@ -1,23 +1,25 @@
 use crate::client::{Client, ClientError};
 use crate::ifs::wl_display::WlDisplay;
-use crate::ifs::wl_region::WlRegion;
+use crate::ifs::wl_region::{WlRegion, WlRegionId};
-use crate::ifs::wl_registry::WlRegistry;
+use crate::ifs::wl_registry::{WlRegistry, WlRegistryId};
-use crate::ifs::wl_surface::WlSurface;
+use crate::ifs::wl_surface::xdg_surface::{XdgSurface, XdgSurfaceId};
+use crate::ifs::wl_surface::{WlSurface, WlSurfaceId};
+use crate::ifs::xdg_wm_base::{XdgWmBaseId, XdgWmBaseObj};
 use crate::object::{Object, ObjectId};
 use crate::utils::copyhashmap::CopyHashMap;
 use ahash::AHashMap;
 use std::cell::{RefCell, RefMut};
 use std::mem;
 use std::rc::Rc;
-use crate::ifs::xdg_wm_base::XdgWmBaseObj;
 
 pub struct Objects {
     pub display: RefCell<Option<Rc<WlDisplay>>>,
     registry: CopyHashMap<ObjectId, Rc<dyn Object>>,
-    registries: CopyHashMap<ObjectId, Rc<WlRegistry>>,
+    registries: CopyHashMap<WlRegistryId, Rc<WlRegistry>>,
-    pub surfaces: CopyHashMap<ObjectId, Rc<WlSurface>>,
+    pub surfaces: CopyHashMap<WlSurfaceId, Rc<WlSurface>>,
-    pub regions: CopyHashMap<ObjectId, Rc<WlRegion>>,
+    pub xdg_surfaces: CopyHashMap<XdgSurfaceId, Rc<XdgSurface>>,
-    pub xdg_wm_bases: CopyHashMap<ObjectId, Rc<XdgWmBaseObj>>,
+    pub regions: CopyHashMap<WlRegionId, Rc<WlRegion>>,
+    pub xdg_wm_bases: CopyHashMap<XdgWmBaseId, Rc<XdgWmBaseObj>>,
     ids: RefCell<Vec<usize>>,
 }
 
@@ -31,6 +33,7 @@ impl Objects {
             registry: Default::default(),
             registries: Default::default(),
             surfaces: Default::default(),
+            xdg_surfaces: Default::default(),
             regions: Default::default(),
             xdg_wm_bases: Default::default(),
             ids: RefCell::new(vec![]),
@@ -39,25 +42,24 @@ impl Objects {
 
     pub fn destroy(&self) {
         {
-            let mut surfaces = self.surfaces.lock();
+            let mut registry = self.registry.lock();
-            for surface in surfaces.values_mut() {
+            for obj in registry.values_mut() {
-                surface.break_loops();
+                obj.break_loops();
-            }
-        }
-        {
-            let mut xdg_wm_bases = self.xdg_wm_bases.lock();
-            for xdg_wm_base in xdg_wm_bases.values_mut() {
-                xdg_wm_base.break_loops();
             }
+            registry.clear();
         }
         *self.display.borrow_mut() = None;
-        self.registry.clear();
         self.regions.clear();
         self.registries.clear();
         self.surfaces.clear();
+        self.xdg_wm_bases.clear();
+        self.xdg_surfaces.clear();
     }
 
-    fn id(&self, client_data: &Client) -> Result<ObjectId, ClientError> {
+    fn id<T>(&self, client_data: &Client) -> Result<T, ClientError>
+    where
+        ObjectId: Into<T>,
+    {
         const MAX_ID_OFFSET: u32 = u32::MAX - MIN_SERVER_ID;
         let offset = self.id_offset();
         if offset > MAX_ID_OFFSET {
@@ -68,7 +70,7 @@ impl Objects {
             );
             return Err(ClientError::TooManyIds);
         }
-        Ok(ObjectId::from_raw(MIN_SERVER_ID + offset))
+        Ok(ObjectId::from_raw(MIN_SERVER_ID + offset).into())
     }
 
     pub fn get_obj(&self, id: ObjectId) -> Result<Rc<dyn Object>, ClientError> {
@@ -123,7 +125,7 @@ impl Objects {
         Ok(())
     }
 
-    pub fn registries(&self) -> RefMut<AHashMap<ObjectId, Rc<WlRegistry>>> {
+    pub fn registries(&self) -> RefMut<AHashMap<WlRegistryId, Rc<WlRegistry>>> {
         self.registries.lock()
     }
 

src/format.rs

@@ -4,6 +4,7 @@ use ahash::AHashMap;
 pub struct Format {
     pub id: u32,
     pub name: &'static str,
+    pub bpp: u32,
 }
 
 pub fn formats() -> AHashMap<u32, &'static Format> {
@@ -22,10 +23,12 @@ static FORMATS: &[Format] = &[
     Format {
         id: 0,
         name: "argb8888",
+        bpp: 4,
     },
     Format {
         id: 1,
         name: "xrgb8888",
+        bpp: 4,
     },
     // Format {
     //     id: fourcc_code('C', '8', ' ', ' '),

src/ifs/mod.rs

@@ -1,8 +1,11 @@
+pub mod wl_buffer;
 pub mod wl_callback;
 pub mod wl_compositor;
 pub mod wl_display;
+pub mod wl_output;
 pub mod wl_region;
 pub mod wl_registry;
+pub mod wl_seat;
 pub mod wl_shm;
 pub mod wl_shm_pool;
 pub mod wl_subcompositor;

src/ifs/wl_buffer/mod.rs

@@ -0,0 +1,91 @@
+mod types;
+
+use std::cell::RefCell;
+use crate::client::{AddObj, Client};
+use crate::clientmem::ClientMem;
+use crate::format::Format;
+use crate::object::{Interface, Object, ObjectId};
+use std::rc::Rc;
+pub use types::*;
+use crate::utils::buffd::MsgParser;
+
+const DESTROY: u32 = 0;
+
+const RELEASE: u32 = 0;
+
+id!(WlBufferId);
+
+pub struct WlBuffer {
+    id: WlBufferId,
+    client: Rc<Client>,
+    offset: usize,
+    width: u32,
+    height: u32,
+    stride: u32,
+    format: &'static Format,
+    mem: RefCell<Option<Rc<ClientMem>>>,
+}
+
+impl WlBuffer {
+    pub fn new(
+        id: WlBufferId,
+        client: &Rc<Client>,
+        offset: usize,
+        width: u32,
+        height: u32,
+        stride: u32,
+        format: &'static Format,
+        mem: &Rc<ClientMem>,
+    ) -> Result<Self, WlBufferError> {
+        let bytes = stride as u64 * height as u64;
+        let required = bytes + offset as u64;
+        if required > mem.len() as u64 {
+            return Err(WlBufferError::OutOfBounds);
+        }
+        let min_row_size = width as u64 * format.bpp as u64;
+        if (stride as u64) < min_row_size {
+            return Err(WlBufferError::StrideTooSmall);
+        }
+        Ok(Self {
+            id,
+            client: client.clone(),
+            offset,
+            width,
+            height,
+            stride,
+            format,
+            mem: RefCell::new(Some(mem.clone())),
+        })
+    }
+
+    async fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
+        let _req: Destroy = self.client.parse(self, parser)?;
+        *self.mem.borrow_mut() = None;
+        self.client.remove_obj(self).await?;
+        Ok(())
+    }
+
+    async fn handle_request_(&self, request: u32, parser: MsgParser<'_, '_>) -> Result<(), WlBufferError> {
+        match request {
+            DESTROY => self.destroy(parser).await?,
+            _ => unreachable!(),
+        }
+        Ok(())
+    }
+}
+
+handle_request!(WlBuffer);
+
+impl Object for WlBuffer {
+    fn id(&self) -> ObjectId {
+        self.id.into()
+    }
+
+    fn interface(&self) -> Interface {
+        Interface::WlBuffer
+    }
+
+    fn num_requests(&self) -> u32 {
+        DESTROY + 1
+    }
+}

src/ifs/wl_buffer/types.rs

@@ -0,0 +1,56 @@
+use std::fmt::{Debug, Formatter};
+use std::rc::Rc;
+use thiserror::Error;
+use crate::client::{ClientError, EventFormatter, RequestParser};
+use crate::ifs::wl_buffer::{RELEASE, WlBuffer};
+use crate::object::Object;
+use crate::utils::buffd::{MsgFormatter, MsgParser, MsgParserError};
+
+#[derive(Debug, Error)]
+pub enum WlBufferError {
+    #[error("The requested memory region is out of bounds for the pool")]
+    OutOfBounds,
+    #[error("The stride does not fit all pixels in a row")]
+    StrideTooSmall,
+    #[error("Could not handle a `destroy` request")]
+    DestroyError(#[from] DestroyError),
+}
+
+#[derive(Debug, Error)]
+pub enum DestroyError {
+    #[error("Parsing failed")]
+    ParseFailed(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+}
+efrom!(DestroyError, ParseFailed, MsgParserError);
+efrom!(DestroyError, ClientError, ClientError);
+
+pub(super) struct Destroy;
+impl RequestParser<'_> for Destroy {
+    fn parse(_parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
+        Ok(Self)
+    }
+}
+impl Debug for Destroy {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "destroy()")
+    }
+}
+
+pub(super) struct Release {
+    pub obj: Rc<WlBuffer>,
+}
+impl EventFormatter for Release {
+    fn format(self: Box<Self>, fmt: &mut MsgFormatter<'_>) {
+        fmt.header(self.obj.id, RELEASE);
+    }
+    fn obj(&self) -> &dyn Object {
+        &*self.obj
+    }
+}
+impl Debug for Release {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "release()")
+    }
+}

src/ifs/wl_callback/mod.rs

@@ -8,12 +8,14 @@ use types::*;
 
 const DONE: u32 = 0;
 
+id!(WlCallbackId);
+
 pub struct WlCallback {
-    id: ObjectId,
+    id: WlCallbackId,
 }
 
 impl WlCallback {
-    pub fn new(id: ObjectId) -> Self {
+    pub fn new(id: WlCallbackId) -> Self {
         Self { id }
     }
 
@@ -34,7 +36,7 @@ handle_request!(WlCallback);
 
 impl Object for WlCallback {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_compositor/mod.rs

@@ -12,13 +12,15 @@ pub use types::*;
 const CREATE_SURFACE: u32 = 0;
 const CREATE_REGION: u32 = 1;
 
+id!(WlCompositorId);
+
 pub struct WlCompositorGlobal {
     name: GlobalName,
 }
 
 pub struct WlCompositorObj {
     global: Rc<WlCompositorGlobal>,
-    id: ObjectId,
+    id: WlCompositorId,
     client: Rc<Client>,
     version: u32,
 }
@@ -30,7 +32,7 @@ impl WlCompositorGlobal {
 
     async fn bind_(
         self: Rc<Self>,
-        id: ObjectId,
+        id: WlCompositorId,
         client: &Rc<Client>,
         version: u32,
     ) -> Result<(), WlCompositorError> {
@@ -98,7 +100,7 @@ handle_request!(WlCompositorObj);
 
 impl Object for WlCompositorObj {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_compositor/types.rs

@@ -1,5 +1,6 @@
 use crate::client::{ClientError, RequestParser};
-use crate::object::ObjectId;
+use crate::ifs::wl_region::WlRegionId;
+use crate::ifs::wl_surface::WlSurfaceId;
 use crate::utils::buffd::{MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use thiserror::Error;
@@ -41,7 +42,7 @@ efrom!(CreateRegionError, ParseFailed, MsgParserError);
 efrom!(CreateRegionError, ClientError, ClientError);
 
 pub(super) struct CreateSurface {
-    pub id: ObjectId,
+    pub id: WlSurfaceId,
 }
 impl RequestParser<'_> for CreateSurface {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
@@ -57,7 +58,7 @@ impl Debug for CreateSurface {
 }
 
 pub(super) struct CreateRegion {
-    pub id: ObjectId,
+    pub id: WlRegionId,
 }
 impl RequestParser<'_> for CreateRegion {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {

src/ifs/wl_display/mod.rs

@@ -45,7 +45,7 @@ impl WlDisplay {
 
     async fn sync(&self, parser: MsgParser<'_, '_>) -> Result<(), SyncError> {
         let sync: Sync = self.client.parse(self, parser)?;
-        let cb = Rc::new(WlCallback::new(sync.callback));
+        let cb = Rc::new(WlCallback::new(sync.callback.into()));
         self.client.add_client_obj(&cb)?;
         self.client.event(cb.done()).await?;
         self.client.remove_obj(&*cb).await?;

src/ifs/wl_display/types.rs

@@ -1,6 +1,8 @@
 use crate::client::{ClientError, EventFormatter, RequestParser};
 use crate::globals::GlobalError;
+use crate::ifs::wl_callback::WlCallbackId;
 use crate::ifs::wl_display::{WlDisplay, DELETE_ID, ERROR};
+use crate::ifs::wl_registry::WlRegistryId;
 use crate::object::{Object, ObjectId, WL_DISPLAY_ID};
 use crate::utils::buffd::{MsgFormatter, MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
@@ -44,7 +46,7 @@ efrom!(SyncError, ParseFailed, MsgParserError);
 efrom!(SyncError, ClientError, ClientError);
 
 pub(super) struct GetRegistry {
-    pub registry: ObjectId,
+    pub registry: WlRegistryId,
 }
 impl RequestParser<'_> for GetRegistry {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
@@ -60,7 +62,7 @@ impl Debug for GetRegistry {
 }
 
 pub(super) struct Sync {
-    pub callback: ObjectId,
+    pub callback: WlCallbackId,
 }
 impl RequestParser<'_> for Sync {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {

src/ifs/wl_output/mod.rs

@@ -0,0 +1 @@
+id!(WlOutputId);

src/ifs/wl_region/mod.rs

@@ -12,14 +12,16 @@ const DESTROY: u32 = 0;
 const ADD: u32 = 1;
 const SUBTRACT: u32 = 2;
 
+id!(WlRegionId);
+
 pub struct WlRegion {
-    id: ObjectId,
+    id: WlRegionId,
     client: Rc<Client>,
     rect: RefCell<Region>,
 }
 
 impl WlRegion {
-    pub fn new(id: ObjectId, client: &Rc<Client>) -> Self {
+    pub fn new(id: WlRegionId, client: &Rc<Client>) -> Self {
         Self {
             id,
             client: client.clone(),
@@ -81,7 +83,7 @@ handle_request!(WlRegion);
 
 impl Object for WlRegion {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_registry/mod.rs

@@ -12,13 +12,15 @@ const BIND: u32 = 0;
 const GLOBAL: u32 = 0;
 const GLOBAL_REMOVE: u32 = 1;
 
+id!(WlRegistryId);
+
 pub struct WlRegistry {
-    id: ObjectId,
+    id: WlRegistryId,
     client: Rc<Client>,
 }
 
 impl WlRegistry {
-    pub fn new(id: ObjectId, client: &Rc<Client>) -> Self {
+    pub fn new(id: WlRegistryId, client: &Rc<Client>) -> Self {
         Self {
             id,
             client: client.clone(),
@@ -78,7 +80,7 @@ handle_request!(WlRegistry);
 
 impl Object for WlRegistry {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_seat/mod.rs

@@ -0,0 +1 @@
+id!(WlSeatId);

src/ifs/wl_shm/mod.rs

@@ -12,13 +12,15 @@ const CREATE_POOL: u32 = 0;
 
 const FORMAT: u32 = 0;
 
+id!(WlShmId);
+
 pub struct WlShmGlobal {
     name: GlobalName,
 }
 
 pub struct WlShmObj {
     global: Rc<WlShmGlobal>,
-    id: ObjectId,
+    id: WlShmId,
     client: Rc<Client>,
 }
 
@@ -29,7 +31,7 @@ impl WlShmGlobal {
 
     async fn bind_(
         self: Rc<Self>,
-        id: ObjectId,
+        id: WlShmId,
         client: &Rc<Client>,
         _version: u32,
     ) -> Result<(), WlShmError> {
@@ -104,7 +106,7 @@ handle_request!(WlShmObj);
 
 impl Object for WlShmObj {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_shm/types.rs

@@ -1,8 +1,8 @@
 use crate::client::{ClientError, EventFormatter, RequestParser};
 use crate::format::Format;
 use crate::ifs::wl_shm::{WlShmObj, FORMAT};
-use crate::ifs::wl_shm_pool::WlShmPoolError;
+use crate::ifs::wl_shm_pool::{WlShmPoolError, WlShmPoolId};
-use crate::object::{Object, ObjectId};
+use crate::object::Object;
 use crate::utils::buffd::{MsgFormatter, MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use std::rc::Rc;
@@ -34,7 +34,7 @@ efrom!(CreatePoolError, WlShmPoolError, WlShmPoolError);
 efrom!(CreatePoolError, ClientError, ClientError);
 
 pub(super) struct CreatePool {
-    pub id: ObjectId,
+    pub id: WlShmPoolId,
     pub fd: OwnedFd,
     pub size: i32,
 }

src/ifs/wl_shm_pool/mod.rs

@@ -2,6 +2,7 @@ mod types;
 
 use crate::client::{AddObj, Client};
 use crate::clientmem::ClientMem;
+use crate::ifs::wl_buffer::WlBuffer;
 use crate::object::{Interface, Object, ObjectId};
 use crate::utils::buffd::MsgParser;
 use std::cell::RefCell;
@@ -13,8 +14,10 @@ const CREATE_BUFFER: u32 = 0;
 const DESTROY: u32 = 1;
 const RESIZE: u32 = 2;
 
+id!(WlShmPoolId);
+
 pub struct WlShmPool {
-    id: ObjectId,
+    id: WlShmPoolId,
     client: Rc<Client>,
     fd: OwnedFd,
     mem: RefCell<Rc<ClientMem>>,
@@ -22,7 +25,7 @@ pub struct WlShmPool {
 
 impl WlShmPool {
     pub fn new(
-        id: ObjectId,
+        id: WlShmPoolId,
         client: &Rc<Client>,
         fd: OwnedFd,
         len: usize,
@@ -37,6 +40,25 @@ impl WlShmPool {
 
     async fn create_buffer(&self, parser: MsgParser<'_, '_>) -> Result<(), CreateBufferError> {
         let req: CreateBuffer = self.client.parse(self, parser)?;
+        let format = match self.client.state.formats.get(&req.format) {
+            Some(f) => *f,
+            _ => return Err(CreateBufferError::InvalidFormat(req.format)),
+        };
+        if req.height < 0 || req.width < 0 || req.stride < 0 || req.offset < 0 {
+            return Err(CreateBufferError::NegativeParameters);
+        }
+        let mem = self.mem.borrow();
+        let buffer = Rc::new(WlBuffer::new(
+            req.id,
+            &self.client,
+            req.offset as usize,
+            req.width as u32,
+            req.height as u32,
+            req.stride as u32,
+            format,
+            &mem,
+        )?);
+        self.client.add_client_obj(&buffer)?;
         Ok(())
     }
 
@@ -78,7 +100,7 @@ handle_request!(WlShmPool);
 
 impl Object for WlShmPool {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_shm_pool/types.rs

@@ -1,6 +1,6 @@
 use crate::client::{ClientError, RequestParser};
 use crate::clientmem::ClientMemError;
-use crate::object::ObjectId;
+use crate::ifs::wl_buffer::{WlBufferError, WlBufferId};
 use crate::utils::buffd::{MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use thiserror::Error;
@@ -27,9 +27,16 @@ pub enum CreateBufferError {
     ParseError(#[source] Box<MsgParserError>),
     #[error(transparent)]
     ClientError(Box<ClientError>),
+    #[error("Format {0} is not supported")]
+    InvalidFormat(u32),
+    #[error("All parameters in a create_buffer request must be non-negative")]
+    NegativeParameters,
+    #[error(transparent)]
+    WlBufferError(Box<WlBufferError>),
 }
 efrom!(CreateBufferError, ParseError, MsgParserError);
 efrom!(CreateBufferError, ClientError, ClientError);
+efrom!(CreateBufferError, WlBufferError, WlBufferError);
 
 #[derive(Debug, Error)]
 pub enum DestroyError {
@@ -56,7 +63,7 @@ efrom!(ResizeError, ParseError, MsgParserError);
 efrom!(ResizeError, ClientMemError, ClientMemError);
 
 pub(super) struct CreateBuffer {
-    pub id: ObjectId,
+    pub id: WlBufferId,
     pub offset: i32,
     pub width: i32,
     pub height: i32,

src/ifs/wl_subcompositor/mod.rs

@@ -13,13 +13,15 @@ const GET_SUBSURFACE: u32 = 1;
 
 const BAD_SURFACE: u32 = 0;
 
+id!(WlSubcompositorId);
+
 pub struct WlSubcompositorGlobal {
     name: GlobalName,
 }
 
 pub struct WlSubcompositorObj {
     global: Rc<WlSubcompositorGlobal>,
-    id: ObjectId,
+    id: WlSubcompositorId,
     client: Rc<Client>,
 }
 
@@ -30,7 +32,7 @@ impl WlSubcompositorGlobal {
 
     async fn bind_(
         self: Rc<Self>,
-        id: ObjectId,
+        id: WlSubcompositorId,
         client: &Rc<Client>,
         _version: u32,
     ) -> Result<(), WlSubcompositorError> {
@@ -99,7 +101,7 @@ handle_request!(WlSubcompositorObj);
 
 impl Object for WlSubcompositorObj {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_subcompositor/types.rs

@@ -1,6 +1,6 @@
 use crate::client::{ClientError, RequestParser};
-use crate::ifs::wl_surface::wl_subsurface::WlSubsurfaceError;
+use crate::ifs::wl_surface::wl_subsurface::{WlSubsurfaceError, WlSubsurfaceId};
-use crate::object::ObjectId;
+use crate::ifs::wl_surface::WlSurfaceId;
 use crate::utils::buffd::{MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use thiserror::Error;
@@ -52,9 +52,9 @@ impl Debug for Destroy {
 }
 
 pub(super) struct GetSubsurface {
-    pub id: ObjectId,
+    pub id: WlSubsurfaceId,
-    pub surface: ObjectId,
+    pub surface: WlSurfaceId,
-    pub parent: ObjectId,
+    pub parent: WlSurfaceId,
 }
 impl RequestParser<'_> for GetSubsurface {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {

src/ifs/wl_surface/mod.rs

@@ -4,15 +4,18 @@ pub mod xdg_surface;
 
 use crate::client::{AddObj, Client, RequestParser};
 use crate::ifs::wl_surface::wl_subsurface::WlSubsurface;
+use crate::ifs::wl_surface::xdg_surface::xdg_popup::XdgPopup;
+use crate::ifs::wl_surface::xdg_surface::xdg_toplevel::XdgToplevel;
+use crate::ifs::wl_surface::xdg_surface::XdgSurface;
 use crate::object::{Interface, Object, ObjectId};
 use crate::pixman::Region;
 use crate::utils::buffd::{MsgParser, MsgParserError};
+use crate::utils::copyhashmap::CopyHashMap;
 use crate::utils::linkedlist::{LinkedList, Node};
 use ahash::AHashMap;
 use std::cell::{Cell, RefCell};
 use std::rc::Rc;
 pub use types::*;
-use crate::ifs::wl_surface::xdg_surface::XdgSurface;
 
 const DESTROY: u32 = 0;
 const ATTACH: u32 = 1;
@@ -32,6 +35,8 @@ const INVALID_SCALE: u32 = 0;
 const INVALID_TRANSFORM: u32 = 1;
 const INVALID_SIZE: u32 = 2;
 
+id!(WlSurfaceId);
+
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
 pub enum SurfaceRole {
     None,
@@ -50,7 +55,7 @@ impl SurfaceRole {
 }
 
 pub struct WlSurface {
-    id: ObjectId,
+    id: WlSurfaceId,
     client: Rc<Client>,
     role: Cell<SurfaceRole>,
     pending: PendingState,
@@ -78,21 +83,44 @@ struct PendingState {
 
 struct XdgSurfaceData {
     xdg_surface: Rc<XdgSurface>,
+    committed: bool,
     role: XdgSurfaceRole,
+    role_data: XdgSurfaceRoleData,
+    popups: CopyHashMap<WlSurfaceId, Rc<XdgPopup>>,
 }
 
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
 enum XdgSurfaceRole {
+    None,
+    Popup,
+    Toplevel,
+}
+
+impl XdgSurfaceRole {
+    fn is_compatible(self, role: XdgSurfaceRole) -> bool {
+        self == XdgSurfaceRole::None || self == role
+    }
+}
+
+enum XdgSurfaceRoleData {
     None,
     Popup(XdgPopupData),
     Toplevel(XdgToplevelData),
 }
 
-struct XdgPopupData {
+impl XdgSurfaceRoleData {
+    fn is_some(&self) -> bool {
+        !matches!(self, XdgSurfaceRoleData::None)
+    }
+}
 
+struct XdgPopupData {
+    popup: Rc<XdgPopup>,
+    parent: Option<Rc<XdgSurface>>,
 }
 
 struct XdgToplevelData {
-
+    toplevel: Rc<XdgToplevel>,
 }
 
 struct SubsurfaceData {
@@ -114,7 +142,7 @@ struct PendingSubsurfaceData {
 
 #[derive(Default)]
 struct ParentData {
-    subsurfaces: AHashMap<ObjectId, Rc<WlSurface>>,
+    subsurfaces: AHashMap<WlSurfaceId, Rc<WlSurface>>,
     below: LinkedList<StackElement>,
     above: LinkedList<StackElement>,
 }
@@ -125,7 +153,7 @@ struct StackElement {
 }
 
 impl WlSurface {
-    pub fn new(id: ObjectId, client: &Rc<Client>) -> Self {
+    pub fn new(id: WlSurfaceId, client: &Rc<Client>) -> Self {
         Self {
             id,
             client: client.clone(),
@@ -136,11 +164,6 @@ impl WlSurface {
         }
     }
 
-    pub fn break_loops(&self) {
-        *self.children.borrow_mut() = None;
-        *self.role_data.borrow_mut() = RoleData::None;
-    }
-
     pub fn get_root(self: &Rc<Self>) -> Rc<WlSurface> {
         let mut root = self.clone();
         loop {
@@ -165,8 +188,47 @@ impl WlSurface {
 
     async fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
         let _req: Destroy = self.parse(parser)?;
-        *self.children.borrow_mut() = None;
+        {
-        *self.role_data.borrow_mut() = RoleData::None;
+            let mut children = self.children.borrow_mut();
+            if let Some(children) = &mut *children {
+                for surface in children.subsurfaces.values() {
+                    *surface.role_data.borrow_mut() = RoleData::None;
+                }
+            }
+            *children = None;
+        }
+        {
+            let mut data = self.role_data.borrow_mut();
+            match &mut *data {
+                RoleData::None => {}
+                RoleData::Subsurface(ss) => {
+                    let mut children = ss.subsurface.parent.children.borrow_mut();
+                    if let Some(children) = &mut *children {
+                        children.subsurfaces.remove(&self.id);
+                    }
+                }
+                RoleData::XdgSurface(xdg) => {
+                    let children = xdg.popups.lock();
+                    for child in children.values() {
+                        let mut rd = child.surface.surface.role_data.borrow_mut();
+                        if let RoleData::XdgSurface(xdg) = &mut *rd {
+                            if let XdgSurfaceRoleData::Popup(p) = &mut xdg.role_data {
+                                p.parent = None;
+                            }
+                        }
+                    }
+                    if let XdgSurfaceRoleData::Popup(p) = &mut xdg.role_data {
+                        if let Some(p) = &p.parent {
+                            let mut rd = p.surface.role_data.borrow_mut();
+                            if let RoleData::XdgSurface(xdg) = &mut *rd {
+                                xdg.popups.remove(&self.id);
+                            }
+                        }
+                    }
+                }
+            }
+            *data = RoleData::None;
+        }
         self.client.remove_obj(self).await?;
         Ok(())
     }
@@ -252,7 +314,7 @@ handle_request!(WlSurface);
 
 impl Object for WlSurface {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {
@@ -262,4 +324,9 @@ impl Object for WlSurface {
     fn num_requests(&self) -> u32 {
         DAMAGE_BUFFER + 1
     }
+
+    fn break_loops(&self) {
+        *self.children.borrow_mut() = None;
+        *self.role_data.borrow_mut() = RoleData::None;
+    }
 }

src/ifs/wl_surface/types.rs

@@ -1,5 +1,6 @@
 use crate::client::{ClientError, RequestParser};
-use crate::object::ObjectId;
+use crate::ifs::wl_callback::WlCallbackId;
+use crate::ifs::wl_region::WlRegionId;
 use crate::utils::buffd::{MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use thiserror::Error;
@@ -134,7 +135,7 @@ impl Debug for Destroy {
 }
 
 pub(super) struct Attach {
-    pub buffer: ObjectId,
+    pub buffer: crate::ifs::wl_buffer::WlBufferId,
     pub x: i32,
     pub y: i32,
 }
@@ -184,7 +185,7 @@ impl Debug for Damage {
 }
 
 pub(super) struct Frame {
-    pub callback: ObjectId,
+    pub callback: WlCallbackId,
 }
 impl RequestParser<'_> for Frame {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
@@ -200,7 +201,7 @@ impl Debug for Frame {
 }
 
 pub(super) struct SetOpaqueRegion {
-    pub region: ObjectId,
+    pub region: WlRegionId,
 }
 impl RequestParser<'_> for SetOpaqueRegion {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
@@ -216,7 +217,7 @@ impl Debug for SetOpaqueRegion {
 }
 
 pub(super) struct SetInputRegion {
-    pub region: ObjectId,
+    pub region: WlRegionId,
 }
 impl RequestParser<'_> for SetInputRegion {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {

src/ifs/wl_surface/wl_subsurface/mod.rs

@@ -1,7 +1,9 @@
 mod types;
 
 use crate::client::AddObj;
-use crate::ifs::wl_surface::{RoleData, StackElement, SubsurfaceData, SurfaceRole, WlSurface};
+use crate::ifs::wl_surface::{
+    RoleData, StackElement, SubsurfaceData, SurfaceRole, WlSurface, WlSurfaceId,
+};
 use crate::object::{Interface, Object, ObjectId};
 use crate::utils::buffd::MsgParser;
 use std::cell::Cell;
@@ -19,8 +21,10 @@ const BAD_SURFACE: u32 = 0;
 
 const MAX_SUBSURFACE_DEPTH: u32 = 100;
 
+id!(WlSubsurfaceId);
+
 pub struct WlSubsurface {
-    id: ObjectId,
+    id: WlSubsurfaceId,
     surface: Rc<WlSurface>,
     pub(super) parent: Rc<WlSurface>,
 }
@@ -67,7 +71,7 @@ fn update_children_attach(
 }
 
 impl WlSubsurface {
-    pub fn new(id: ObjectId, surface: &Rc<WlSurface>, parent: &Rc<WlSurface>) -> Self {
+    pub fn new(id: WlSubsurfaceId, surface: &Rc<WlSurface>, parent: &Rc<WlSurface>) -> Self {
         Self {
             id,
             surface: surface.clone(),
@@ -150,7 +154,7 @@ impl WlSubsurface {
         Ok(())
     }
 
-    fn place(&self, sibling: ObjectId, above: bool) -> Result<(), PlacementError> {
+    fn place(&self, sibling: WlSurfaceId, above: bool) -> Result<(), PlacementError> {
         if sibling == self.surface.id {
             return Err(PlacementError::AboveSelf(sibling));
         }
@@ -247,7 +251,7 @@ handle_request!(WlSubsurface);
 
 impl Object for WlSubsurface {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_surface/wl_subsurface/types.rs

@@ -1,6 +1,5 @@
 use crate::client::{ClientError, RequestParser};
-use crate::ifs::wl_surface::SurfaceRole;
+use crate::ifs::wl_surface::{SurfaceRole, WlSurfaceId};
-use crate::object::ObjectId;
 use crate::utils::buffd::{MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use thiserror::Error;
@@ -20,13 +19,13 @@ pub enum WlSubsurfaceError {
     #[error("Could not process `set_desync` request")]
     SetDesync(#[from] SetDesyncError),
     #[error("Surface {0} cannot be assigned the role `Subsurface` because it already has the role `{1:?}`")]
-    IncompatibleType(ObjectId, SurfaceRole),
+    IncompatibleType(WlSurfaceId, SurfaceRole),
     #[error("Surface {0} already has an attached `wl_subsurface`")]
-    AlreadyAttached(ObjectId),
+    AlreadyAttached(WlSurfaceId),
     #[error("Surface {0} cannot be made its own parent")]
-    OwnParent(ObjectId),
+    OwnParent(WlSurfaceId),
     #[error("Surface {0} cannot be made a subsurface of {1} because it's an ancestor of {1}")]
-    Ancestor(ObjectId, ObjectId),
+    Ancestor(WlSurfaceId, WlSurfaceId),
     #[error("Subsurfaces cannot be nested deeper than 100 levels")]
     MaxDepthExceeded,
 }
@@ -60,9 +59,9 @@ efrom!(PlaceAboveError, ParseFailed, MsgParserError);
 #[derive(Debug, Error)]
 pub enum PlacementError {
     #[error("Cannot place {0} above/below itself")]
-    AboveSelf(ObjectId),
+    AboveSelf(WlSurfaceId),
     #[error("{0} is not a sibling of {1}")]
-    NotASibling(ObjectId, ObjectId),
+    NotASibling(WlSurfaceId, WlSurfaceId),
 }
 
 #[derive(Debug, Error)]
@@ -88,7 +87,7 @@ pub enum SetDesyncError {
 }
 efrom!(SetDesyncError, ParseFailed, MsgParserError);
 
-pub(in crate::ifs) struct Destroy;
+pub(super) struct Destroy;
 impl RequestParser<'_> for Destroy {
     fn parse(_parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
         Ok(Self)
@@ -100,7 +99,7 @@ impl Debug for Destroy {
     }
 }
 
-pub(in crate::ifs) struct SetPosition {
+pub(super) struct SetPosition {
     pub x: i32,
     pub y: i32,
 }
@@ -118,8 +117,8 @@ impl Debug for SetPosition {
     }
 }
 
-pub(in crate::ifs) struct PlaceAbove {
+pub(super) struct PlaceAbove {
-    pub sibling: ObjectId,
+    pub sibling: WlSurfaceId,
 }
 impl RequestParser<'_> for PlaceAbove {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
@@ -134,8 +133,8 @@ impl Debug for PlaceAbove {
     }
 }
 
-pub(in crate::ifs) struct PlaceBelow {
+pub(super) struct PlaceBelow {
-    pub sibling: ObjectId,
+    pub sibling: WlSurfaceId,
 }
 impl RequestParser<'_> for PlaceBelow {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
@@ -150,7 +149,7 @@ impl Debug for PlaceBelow {
     }
 }
 
-pub(in crate::ifs) struct SetSync;
+pub(super) struct SetSync;
 impl RequestParser<'_> for SetSync {
     fn parse(_parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
         Ok(Self)
@@ -162,7 +161,7 @@ impl Debug for SetSync {
     }
 }
 
-pub(in crate::ifs) struct SetDesync;
+pub(super) struct SetDesync;
 impl RequestParser<'_> for SetDesync {
     fn parse(_parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
         Ok(Self)

src/ifs/wl_surface/xdg_surface/mod.rs

@@ -2,13 +2,18 @@ mod types;
 pub mod xdg_popup;
 pub mod xdg_toplevel;
 
-use crate::ifs::wl_surface::{RoleData, SurfaceRole, WlSurface, XdgSurfaceData};
+use crate::client::AddObj;
+use crate::ifs::wl_surface::xdg_surface::xdg_popup::XdgPopup;
+use crate::ifs::wl_surface::xdg_surface::xdg_toplevel::XdgToplevel;
+use crate::ifs::wl_surface::{
+    RoleData, SurfaceRole, WlSurface, XdgPopupData, XdgSurfaceData, XdgSurfaceRole,
+    XdgSurfaceRoleData, XdgToplevelData,
+};
+use crate::ifs::xdg_wm_base::XdgWmBaseObj;
 use crate::object::{Interface, Object, ObjectId};
 use crate::utils::buffd::MsgParser;
 use std::rc::Rc;
 pub use types::*;
-use crate::client::AddObj;
-use crate::ifs::xdg_wm_base::XdgWmBaseObj;
 
 const DESTROY: u32 = 0;
 const GET_TOPLEVEL: u32 = 1;
@@ -22,15 +27,22 @@ const NOT_CONSTRUCTED: u32 = 1;
 const ALREADY_CONSTRUCTED: u32 = 2;
 const UNCONFIGURED_BUFFER: u32 = 3;
 
+id!(XdgSurfaceId);
+
 pub struct XdgSurface {
-    id: ObjectId,
+    id: XdgSurfaceId,
     wm_base: Rc<XdgWmBaseObj>,
-    surface: Rc<WlSurface>,
+    pub(super) surface: Rc<WlSurface>,
     version: u32,
 }
 
 impl XdgSurface {
-    pub fn new(wm_base: &Rc<XdgWmBaseObj>, id: ObjectId, surface: &Rc<WlSurface>, version: u32) -> Self {
+    pub fn new(
+        wm_base: &Rc<XdgWmBaseObj>,
+        id: XdgSurfaceId,
+        surface: &Rc<WlSurface>,
+        version: u32,
+    ) -> Self {
         Self {
             id,
             wm_base: wm_base.clone(),
@@ -50,25 +62,101 @@ impl XdgSurface {
         }
         *data = RoleData::XdgSurface(Box::new(XdgSurfaceData {
             xdg_surface: self.clone(),
+            committed: false,
+            role: XdgSurfaceRole::None,
+            role_data: XdgSurfaceRoleData::None,
+            popups: Default::default(),
         }));
         Ok(())
     }
 
     async fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
         let _req: Destroy = self.surface.client.parse(self, parser)?;
-        *self.surface.role_data.borrow_mut() = RoleData::None;
+        {
+            let mut data = self.surface.role_data.borrow_mut();
+            if let RoleData::XdgSurface(rd) = &*data {
+                if rd.role_data.is_some() {
+                    return Err(DestroyError::RoleNotYetDestroyed(self.id));
+                }
+                let children = rd.popups.lock();
+                for child in children.values() {
+                    let mut data = child.surface.surface.role_data.borrow_mut();
+                    if let RoleData::XdgSurface(xdg) = &mut *data {
+                        if let XdgSurfaceRoleData::Popup(p) = &mut xdg.role_data {
+                            p.parent = None;
+                        }
+                    }
+                }
+            }
+            *data = RoleData::None;
+        }
         self.wm_base.surfaces.remove(&self.id);
         self.surface.client.remove_obj(self).await?;
         Ok(())
     }
 
-    async fn get_toplevel(&self, parser: MsgParser<'_, '_>) -> Result<(), GetToplevelError> {
+    async fn get_toplevel(
-        let _req: GetToplevel = self.surface.client.parse(self, parser)?;
+        self: &Rc<Self>,
+        parser: MsgParser<'_, '_>,
+    ) -> Result<(), GetToplevelError> {
+        let req: GetToplevel = self.surface.client.parse(&**self, parser)?;
+        let mut data = self.surface.role_data.borrow_mut();
+        if let RoleData::XdgSurface(data) = &mut *data {
+            if !data.role.is_compatible(XdgSurfaceRole::Toplevel) {
+                return Err(GetToplevelError::IncompatibleRole);
+            }
+            if data.role_data.is_some() {
+                self.surface.client.protocol_error(
+                    &**self,
+                    ALREADY_CONSTRUCTED,
+                    format!(
+                        "wl_surface {} already has an assigned xdg_toplevel",
+                        self.surface.id
+                    ),
+                );
+                return Err(GetToplevelError::AlreadyConstructed);
+            }
+            data.role = XdgSurfaceRole::Toplevel;
+            let toplevel = Rc::new(XdgToplevel::new(req.id, self, self.version));
+            self.surface.client.add_client_obj(&toplevel)?;
+            data.role_data = XdgSurfaceRoleData::Toplevel(XdgToplevelData { toplevel });
+        }
         Ok(())
     }
 
-    async fn get_popup(&self, parser: MsgParser<'_, '_>) -> Result<(), GetPopupError> {
+    async fn get_popup(self: &Rc<Self>, parser: MsgParser<'_, '_>) -> Result<(), GetPopupError> {
-        let _req: GetPopup = self.surface.client.parse(self, parser)?;
+        let req: GetPopup = self.surface.client.parse(&**self, parser)?;
+        let mut data = self.surface.role_data.borrow_mut();
+        if let RoleData::XdgSurface(data) = &mut *data {
+            let mut parent = None;
+            if req.parent.is_some() {
+                parent = Some(self.surface.client.get_xdg_surface(req.parent)?);
+            }
+            if !data.role.is_compatible(XdgSurfaceRole::Popup) {
+                return Err(GetPopupError::IncompatibleRole);
+            }
+            if data.role_data.is_some() {
+                self.surface.client.protocol_error(
+                    &**self,
+                    ALREADY_CONSTRUCTED,
+                    format!(
+                        "wl_surface {} already has an assigned xdg_popup",
+                        self.surface.id
+                    ),
+                );
+                return Err(GetPopupError::AlreadyConstructed);
+            }
+            data.role = XdgSurfaceRole::Popup;
+            let popup = Rc::new(XdgPopup::new(req.id, self, self.version));
+            self.surface.client.add_client_obj(&popup)?;
+            if let Some(parent) = &parent {
+                let mut data = parent.surface.role_data.borrow_mut();
+                if let RoleData::XdgSurface(xdg) = &mut *data {
+                    xdg.popups.set(self.surface.id, popup.clone());
+                }
+            }
+            data.role_data = XdgSurfaceRoleData::Popup(XdgPopupData { popup, parent });
+        }
         Ok(())
     }
 
@@ -86,7 +174,7 @@ impl XdgSurface {
     }
 
     async fn handle_request_(
-        &self,
+        self: &Rc<Self>,
         request: u32,
         parser: MsgParser<'_, '_>,
     ) -> Result<(), XdgSurfaceError> {
@@ -106,7 +194,7 @@ handle_request!(XdgSurface);
 
 impl Object for XdgSurface {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_surface/xdg_surface/types.rs

@@ -1,11 +1,14 @@
 use crate::client::{ClientError, EventFormatter, RequestParser};
-use crate::ifs::wl_surface::xdg_surface::{XdgSurface, CONFIGURE};
+use crate::ifs::wl_surface::xdg_surface::xdg_popup::XdgPopupId;
-use crate::object::{Object, ObjectId};
+use crate::ifs::wl_surface::xdg_surface::xdg_toplevel::XdgToplevelId;
+use crate::ifs::wl_surface::xdg_surface::{XdgSurface, XdgSurfaceId, CONFIGURE};
+use crate::ifs::wl_surface::{SurfaceRole, WlSurfaceId};
+use crate::ifs::xdg_positioner::XdgPositionerId;
+use crate::object::Object;
 use crate::utils::buffd::{MsgFormatter, MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use std::rc::Rc;
 use thiserror::Error;
-use crate::ifs::wl_surface::SurfaceRole;
 
 #[derive(Debug, Error)]
 pub enum XdgSurfaceError {
@@ -20,9 +23,9 @@ pub enum XdgSurfaceError {
     #[error("Could not process `ack_configure` request")]
     AckConfigureError(#[from] AckConfigureError),
     #[error("Surface {0} cannot be turned into a xdg_surface because it already has the role {}", .1.name())]
-    IncompatibleRole(ObjectId, SurfaceRole),
+    IncompatibleRole(WlSurfaceId, SurfaceRole),
     #[error("Surface {0} cannot be turned into a xdg_surface because it already has an attached xdg_surface")]
-    AlreadyAttached(ObjectId),
+    AlreadyAttached(WlSurfaceId),
 }
 
 #[derive(Debug, Error)]
@@ -31,6 +34,8 @@ pub enum DestroyError {
     ParseFailed(#[source] Box<MsgParserError>),
     #[error(transparent)]
     ClientError(Box<ClientError>),
+    #[error("Cannot destroy xdg_surface {0} because it's associated xdg_toplevel/popup is not yet destroyed")]
+    RoleNotYetDestroyed(XdgSurfaceId),
 }
 efrom!(DestroyError, ParseFailed, MsgParserError);
 efrom!(DestroyError, ClientError, ClientError);
@@ -41,6 +46,10 @@ pub enum GetToplevelError {
     ParseFailed(#[source] Box<MsgParserError>),
     #[error(transparent)]
     ClientError(Box<ClientError>),
+    #[error("The surface already has a different role")]
+    IncompatibleRole,
+    #[error("The surface already has an assigned xdg_toplevel")]
+    AlreadyConstructed,
 }
 efrom!(GetToplevelError, ParseFailed, MsgParserError);
 efrom!(GetToplevelError, ClientError, ClientError);
@@ -51,6 +60,10 @@ pub enum GetPopupError {
     ParseFailed(#[source] Box<MsgParserError>),
     #[error(transparent)]
     ClientError(Box<ClientError>),
+    #[error("The surface already has a different role")]
+    IncompatibleRole,
+    #[error("The surface already has an assigned xdg_popup")]
+    AlreadyConstructed,
 }
 efrom!(GetPopupError, ParseFailed, MsgParserError);
 efrom!(GetPopupError, ClientError, ClientError);
@@ -88,7 +101,7 @@ impl Debug for Destroy {
 }
 
 pub(super) struct GetToplevel {
-    pub id: ObjectId,
+    pub id: XdgToplevelId,
 }
 impl RequestParser<'_> for GetToplevel {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
@@ -104,9 +117,9 @@ impl Debug for GetToplevel {
 }
 
 pub(super) struct GetPopup {
-    pub id: ObjectId,
+    pub id: XdgPopupId,
-    pub parent: ObjectId,
+    pub parent: XdgSurfaceId,
-    pub positioner: ObjectId,
+    pub positioner: XdgPositionerId,
 }
 impl RequestParser<'_> for GetPopup {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {

src/ifs/wl_surface/xdg_surface/xdg_popup/mod.rs

@@ -1,6 +1,7 @@
 mod types;
 
 use crate::ifs::wl_surface::xdg_surface::XdgSurface;
+use crate::ifs::wl_surface::{RoleData, XdgSurfaceRoleData};
 use crate::object::{Interface, Object, ObjectId};
 use crate::utils::buffd::MsgParser;
 use std::rc::Rc;
@@ -16,14 +17,16 @@ const REPOSITIONED: u32 = 2;
 
 const INVALID_GRAB: u32 = 1;
 
+id!(XdgPopupId);
+
 pub struct XdgPopup {
-    id: ObjectId,
+    id: XdgPopupId,
-    surface: Rc<XdgSurface>,
+    pub(in super::super) surface: Rc<XdgSurface>,
     version: u32,
 }
 
 impl XdgPopup {
-    pub fn new(id: ObjectId, surface: &Rc<XdgSurface>, version: u32) -> Self {
+    pub fn new(id: XdgPopupId, surface: &Rc<XdgSurface>, version: u32) -> Self {
         Self {
             id,
             surface: surface.clone(),
@@ -33,6 +36,20 @@ impl XdgPopup {
 
     async fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
         let _req: Destroy = self.surface.surface.client.parse(self, parser)?;
+        {
+            let mut rd = self.surface.surface.role_data.borrow_mut();
+            if let RoleData::XdgSurface(xdg) = &mut *rd {
+                if let XdgSurfaceRoleData::Popup(p) = &xdg.role_data {
+                    if let Some(p) = &p.parent {
+                        let mut rd = p.surface.role_data.borrow_mut();
+                        if let RoleData::XdgSurface(xdg) = &mut *rd {
+                            xdg.popups.remove(&self.surface.surface.id);
+                        }
+                    }
+                }
+                xdg.role_data = XdgSurfaceRoleData::None;
+            }
+        }
         Ok(())
     }
 
@@ -65,7 +82,7 @@ handle_request!(XdgPopup);
 
 impl Object for XdgPopup {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_surface/xdg_surface/xdg_popup/types.rs

@@ -1,8 +1,10 @@
 use crate::client::{ClientError, EventFormatter, RequestParser};
+use crate::ifs::wl_seat::WlSeatId;
 use crate::ifs::wl_surface::xdg_surface::xdg_popup::{
     XdgPopup, CONFIGURE, POPUP_DONE, REPOSITIONED,
 };
-use crate::object::{Object, ObjectId};
+use crate::ifs::xdg_positioner::XdgPositionerId;
+use crate::object::Object;
 use crate::utils::buffd::{MsgFormatter, MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use std::rc::Rc;
@@ -61,7 +63,7 @@ impl Debug for Destroy {
 }
 
 pub(super) struct Grab {
-    pub seat: ObjectId,
+    pub seat: WlSeatId,
     pub serial: u32,
 }
 impl RequestParser<'_> for Grab {
@@ -79,7 +81,7 @@ impl Debug for Grab {
 }
 
 pub(super) struct Reposition {
-    pub positioner: ObjectId,
+    pub positioner: XdgPositionerId,
     pub token: u32,
 }
 impl RequestParser<'_> for Reposition {

src/ifs/wl_surface/xdg_surface/xdg_toplevel/mod.rs

@@ -1,6 +1,7 @@
 mod types;
 
 use crate::ifs::wl_surface::xdg_surface::XdgSurface;
+use crate::ifs::wl_surface::{RoleData, XdgSurfaceRoleData};
 use crate::object::{Interface, Object, ObjectId};
 use crate::utils::buffd::MsgParser;
 use num_derive::FromPrimitive;
@@ -47,14 +48,16 @@ const STATE_TILED_RIGHT: u32 = 6;
 const STATE_TILED_TOP: u32 = 7;
 const STATE_TILED_BOTTOM: u32 = 8;
 
+id!(XdgToplevelId);
+
 pub struct XdgToplevel {
-    id: ObjectId,
+    id: XdgToplevelId,
     surface: Rc<XdgSurface>,
     version: u32,
 }
 
 impl XdgToplevel {
-    pub fn new(id: ObjectId, surface: &Rc<XdgSurface>, version: u32) -> Self {
+    pub fn new(id: XdgToplevelId, surface: &Rc<XdgSurface>, version: u32) -> Self {
         Self {
             id,
             surface: surface.clone(),
@@ -64,6 +67,12 @@ impl XdgToplevel {
 
     async fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
         let _req: Destroy = self.surface.surface.client.parse(self, parser)?;
+        {
+            let mut rd = self.surface.surface.role_data.borrow_mut();
+            if let RoleData::XdgSurface(rd) = &mut *rd {
+                rd.role_data = XdgSurfaceRoleData::None;
+            }
+        }
         Ok(())
     }
 
@@ -165,7 +174,7 @@ handle_request!(XdgToplevel);
 
 impl Object for XdgToplevel {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/wl_surface/xdg_surface/xdg_toplevel/types.rs

@@ -1,7 +1,8 @@
 use super::CONFIGURE;
 use crate::client::{ClientError, EventFormatter, RequestParser};
-use crate::ifs::wl_surface::xdg_surface::xdg_toplevel::{XdgToplevel, CLOSE};
+use crate::ifs::wl_seat::WlSeatId;
-use crate::object::{Object, ObjectId};
+use crate::ifs::wl_surface::xdg_surface::xdg_toplevel::{XdgToplevel, XdgToplevelId, CLOSE};
+use crate::object::Object;
 use crate::utils::buffd::{MsgFormatter, MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use std::rc::Rc;
@@ -192,11 +193,13 @@ impl Debug for Destroy {
 }
 
 pub(super) struct SetParent {
-    pub parent: ObjectId,
+    pub parent: XdgToplevelId,
 }
 impl RequestParser<'_> for SetParent {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
-        Ok(Self { parent: parser.object()? })
+        Ok(Self {
+            parent: parser.object()?,
+        })
     }
 }
 impl Debug for SetParent {
@@ -210,7 +213,9 @@ pub(super) struct SetTitle<'a> {
 }
 impl<'a> RequestParser<'a> for SetTitle<'a> {
     fn parse(parser: &mut MsgParser<'_, 'a>) -> Result<Self, MsgParserError> {
-        Ok(Self { title: parser.string()? })
+        Ok(Self {
+            title: parser.string()?,
+        })
     }
 }
 impl<'a> Debug for SetTitle<'a> {
@@ -224,7 +229,9 @@ pub(super) struct SetAppId<'a> {
 }
 impl<'a> RequestParser<'a> for SetAppId<'a> {
     fn parse(parser: &mut MsgParser<'_, 'a>) -> Result<Self, MsgParserError> {
-        Ok(Self { app_id: parser.string()? })
+        Ok(Self {
+            app_id: parser.string()?,
+        })
     }
 }
 impl<'a> Debug for SetAppId<'a> {
@@ -234,7 +241,7 @@ impl<'a> Debug for SetAppId<'a> {
 }
 
 pub(super) struct ShowWindowMenu {
-    pub seat: ObjectId,
+    pub seat: WlSeatId,
     pub serial: u32,
     pub x: i32,
     pub y: i32,
@@ -251,17 +258,24 @@ impl RequestParser<'_> for ShowWindowMenu {
 }
 impl Debug for ShowWindowMenu {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        write!(f, "show_window_menu(seat: {}, serial: {}, x: {}, y: {})", self.seat, self.serial, self.x, self.y)
+        write!(
+            f,
+            "show_window_menu(seat: {}, serial: {}, x: {}, y: {})",
+            self.seat, self.serial, self.x, self.y
+        )
     }
 }
 
 pub(super) struct Move {
-    pub seat: ObjectId,
+    pub seat: WlSeatId,
     pub serial: u32,
 }
 impl RequestParser<'_> for Move {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
-        Ok(Self { seat: parser.object()?, serial: parser.uint()? })
+        Ok(Self {
+            seat: parser.object()?,
+            serial: parser.uint()?,
+        })
     }
 }
 impl Debug for Move {
@@ -271,7 +285,7 @@ impl Debug for Move {
 }
 
 pub(super) struct Resize {
-    pub seat: ObjectId,
+    pub seat: WlSeatId,
     pub serial: u32,
     pub edges: u32,
 }
@@ -286,7 +300,11 @@ impl RequestParser<'_> for Resize {
 }
 impl Debug for Resize {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        write!(f, "resize(seat: {}, serial: {}, edges: {})", self.seat, self.serial, self.edges)
+        write!(
+            f,
+            "resize(seat: {}, serial: {}, edges: {})",
+            self.seat, self.serial, self.edges
+        )
     }
 }
 
@@ -296,12 +314,19 @@ pub(super) struct SetMaxSize {
 }
 impl RequestParser<'_> for SetMaxSize {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
-        Ok(Self { width: parser.int()?, height: parser.int()? })
+        Ok(Self {
+            width: parser.int()?,
+            height: parser.int()?,
+        })
     }
 }
 impl Debug for SetMaxSize {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        write!(f, "set_max_size(width: {}, height: {})", self.width, self.height)
+        write!(
+            f,
+            "set_max_size(width: {}, height: {})",
+            self.width, self.height
+        )
     }
 }
 
@@ -311,12 +336,19 @@ pub(super) struct SetMinSize {
 }
 impl RequestParser<'_> for SetMinSize {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
-        Ok(Self { width: parser.int()?, height: parser.int()? })
+        Ok(Self {
+            width: parser.int()?,
+            height: parser.int()?,
+        })
     }
 }
 impl Debug for SetMinSize {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        write!(f, "set_min_size(width: {}, height: {})", self.width, self.height)
+        write!(
+            f,
+            "set_min_size(width: {}, height: {})",
+            self.width, self.height
+        )
     }
 }
 
@@ -345,11 +377,13 @@ impl Debug for UnsetMaximized {
 }
 
 pub(super) struct SetFullscreen {
-    pub output: ObjectId,
+    pub output: crate::ifs::wl_output::WlOutputId,
 }
 impl RequestParser<'_> for SetFullscreen {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
-        Ok(Self { output: parser.object()? })
+        Ok(Self {
+            output: parser.object()?,
+        })
     }
 }
 impl Debug for SetFullscreen {

src/ifs/xdg_positioner/mod.rs

@@ -74,8 +74,10 @@ bitflags! {
     }
 }
 
+id!(XdgPositionerId);
+
 pub struct XdgPositioner {
-    id: ObjectId,
+    id: XdgPositionerId,
     client: Rc<Client>,
     version: u32,
     position: RefCell<XdgPositioned>,
@@ -101,7 +103,7 @@ pub struct XdgPositioned {
 }
 
 impl XdgPositioner {
-    pub fn new(id: ObjectId, client: &Rc<Client>, version: u32) -> Self {
+    pub fn new(id: XdgPositionerId, client: &Rc<Client>, version: u32) -> Self {
         Self {
             id,
             client: client.clone(),
@@ -256,7 +258,7 @@ handle_request!(XdgPositioner);
 
 impl Object for XdgPositioner {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {

src/ifs/xdg_wm_base/mod.rs

@@ -2,7 +2,7 @@ mod types;
 
 use crate::client::{AddObj, Client};
 use crate::globals::{Global, GlobalName};
-use crate::ifs::wl_surface::xdg_surface::XdgSurface;
+use crate::ifs::wl_surface::xdg_surface::{XdgSurface, XdgSurfaceId};
 use crate::ifs::xdg_positioner::XdgPositioner;
 use crate::object::{Interface, Object, ObjectId};
 use crate::utils::buffd::MsgParser;
@@ -24,16 +24,18 @@ const INVALID_POPUP_PARENT: u32 = 3;
 const INVALID_SURFACE_STATE: u32 = 4;
 const INVALID_POSITIONER: u32 = 5;
 
+id!(XdgWmBaseId);
+
 pub struct XdgWmBaseGlobal {
     name: GlobalName,
 }
 
 pub struct XdgWmBaseObj {
     global: Rc<XdgWmBaseGlobal>,
-    id: ObjectId,
+    id: XdgWmBaseId,
     client: Rc<Client>,
     version: u32,
-    pub(super) surfaces: CopyHashMap<ObjectId, Rc<XdgSurface>>,
+    pub(super) surfaces: CopyHashMap<XdgSurfaceId, Rc<XdgSurface>>,
 }
 
 impl XdgWmBaseGlobal {
@@ -43,7 +45,7 @@ impl XdgWmBaseGlobal {
 
     async fn bind_(
         self: Rc<Self>,
-        id: ObjectId,
+        id: XdgWmBaseId,
         client: &Rc<Client>,
         version: u32,
     ) -> Result<(), XdgWmBaseError> {
@@ -60,10 +62,6 @@ impl XdgWmBaseGlobal {
 }
 
 impl XdgWmBaseObj {
-    pub fn break_loops(&self) {
-        self.surfaces.clear();
-    }
-
     async fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
         let _req: Destroy = self.client.parse(self, parser)?;
         if !self.surfaces.is_empty() {
@@ -91,7 +89,10 @@ impl XdgWmBaseObj {
         Ok(())
     }
 
-    async fn get_xdg_surface(self: &Rc<Self>, parser: MsgParser<'_, '_>) -> Result<(), GetXdgSurfaceError> {
+    async fn get_xdg_surface(
+        self: &Rc<Self>,
+        parser: MsgParser<'_, '_>,
+    ) -> Result<(), GetXdgSurfaceError> {
         let req: GetXdgSurface = self.client.parse(&**self, parser)?;
         let surface = self.client.get_surface(req.surface)?;
         let xdg_surface = Rc::new(XdgSurface::new(self, req.id, &surface, 3));
@@ -146,7 +147,7 @@ handle_request!(XdgWmBaseObj);
 
 impl Object for XdgWmBaseObj {
     fn id(&self) -> ObjectId {
-        self.id
+        self.id.into()
     }
 
     fn interface(&self) -> Interface {
@@ -156,4 +157,8 @@ impl Object for XdgWmBaseObj {
     fn num_requests(&self) -> u32 {
         PONG + 1
     }
+
+    fn break_loops(&self) {
+        self.surfaces.clear();
+    }
 }

src/ifs/xdg_wm_base/types.rs

@@ -1,11 +1,13 @@
 use crate::client::{ClientError, EventFormatter, RequestParser};
+use crate::ifs::wl_surface::xdg_surface::{XdgSurfaceError, XdgSurfaceId};
+use crate::ifs::wl_surface::WlSurfaceId;
+use crate::ifs::xdg_positioner::XdgPositionerId;
 use crate::ifs::xdg_wm_base::{XdgWmBaseObj, PING};
-use crate::object::{Object, ObjectId};
+use crate::object::Object;
 use crate::utils::buffd::{MsgFormatter, MsgParser, MsgParserError};
 use std::fmt::{Debug, Formatter};
 use std::rc::Rc;
 use thiserror::Error;
-use crate::ifs::wl_surface::xdg_surface::XdgSurfaceError;
 
 #[derive(Debug, Error)]
 pub enum XdgWmBaseError {
@@ -77,7 +79,7 @@ impl Debug for Destroy {
 }
 
 pub(super) struct CreatePositioner {
-    pub id: ObjectId,
+    pub id: XdgPositionerId,
 }
 impl RequestParser<'_> for CreatePositioner {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {
@@ -93,8 +95,8 @@ impl Debug for CreatePositioner {
 }
 
 pub(super) struct GetXdgSurface {
-    pub id: ObjectId,
+    pub id: XdgSurfaceId,
-    pub surface: ObjectId,
+    pub surface: WlSurfaceId,
 }
 impl RequestParser<'_> for GetXdgSurface {
     fn parse(parser: &mut MsgParser<'_, '_>) -> Result<Self, MsgParserError> {

src/macros.rs

@@ -39,10 +39,56 @@ macro_rules! bind {
                 Box<dyn std::future::Future<Output = Result<(), crate::globals::GlobalError>> + 'a>,
             > {
                 Box::pin(async move {
-                    self.bind_(id, client, version).await?;
+                    self.bind_(id.into(), client, version).await?;
                     Ok(())
                 })
             }
         }
     };
 }
+
+macro_rules! id {
+    ($name:ident) => {
+        #[derive(Debug, Copy, Clone, Hash, Ord, PartialOrd, Eq, PartialEq)]
+        pub struct $name(u32);
+
+        #[allow(dead_code)]
+        impl $name {
+            pub const NONE: Self = $name(0);
+
+            pub fn from_raw(raw: u32) -> Self {
+                Self(raw)
+            }
+
+            pub fn raw(self) -> u32 {
+                self.0
+            }
+
+            pub fn is_some(self) -> bool {
+                self.0 != 0
+            }
+
+            pub fn is_none(self) -> bool {
+                self.0 == 0
+            }
+        }
+
+        impl From<crate::object::ObjectId> for $name {
+            fn from(f: crate::object::ObjectId) -> Self {
+                Self(f.raw())
+            }
+        }
+
+        impl From<$name> for crate::object::ObjectId {
+            fn from(f: $name) -> Self {
+                crate::object::ObjectId::from_raw(f.0)
+            }
+        }
+
+        impl std::fmt::Display for $name {
+            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+                std::fmt::Display::fmt(&self.0, f)
+            }
+        }
+    };
+}

src/object.rs

@@ -11,6 +11,8 @@ pub const WL_DISPLAY_ID: ObjectId = ObjectId(1);
 pub struct ObjectId(u32);
 
 impl ObjectId {
+    pub const NONE: Self = ObjectId(0);
+
     pub fn from_raw(raw: u32) -> Self {
         Self(raw)
     }
@@ -38,6 +40,7 @@ pub trait Object: ObjectHandleRequest + 'static {
     fn id(&self) -> ObjectId;
     fn interface(&self) -> Interface;
     fn num_requests(&self) -> u32;
+    fn break_loops(&self) {}
 }
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
@@ -57,6 +60,7 @@ pub enum Interface {
     XdgPopup,
     XdgToplevel,
     WlRegion,
+    WlBuffer,
 }
 
 impl Interface {
@@ -77,6 +81,7 @@ impl Interface {
             Interface::XdgPositioner => "xdg_positioner",
             Interface::XdgPopup => "xdg_popup",
             Interface::XdgToplevel => "xdg_toplevel",
+            Interface::WlBuffer => "wl_buffer",
         }
     }
 }

src/utils/buffd/formatter.rs

@@ -1,7 +1,7 @@
 use crate::object::ObjectId;
 use crate::utils::buffd::buf_out::{BufFdOut, MsgFds};
 use std::mem;
-use std::mem::{MaybeUninit};
+use std::mem::MaybeUninit;
 use uapi::OwnedFd;
 
 pub struct MsgFormatter<'a> {
@@ -50,11 +50,11 @@ impl<'a> MsgFormatter<'a> {
         self
     }
 
-    pub fn object(&mut self, obj: ObjectId) -> &mut Self {
+    pub fn object<T: Into<ObjectId>>(&mut self, obj: T) -> &mut Self {
-        self.uint(obj.raw())
+        self.uint(obj.into().raw())
     }
 
-    pub fn header(&mut self, obj: ObjectId, event: u32) -> &mut Self {
+    pub fn header<T: Into<ObjectId>>(&mut self, obj: T, event: u32) -> &mut Self {
         self.object(obj).uint(event)
     }
 

src/utils/buffd/parser.rs

@@ -46,8 +46,11 @@ impl<'a, 'b> MsgParser<'a, 'b> {
         self.int().map(|i| i as u32)
     }
 
-    pub fn object(&mut self) -> Result<ObjectId, MsgParserError> {
+    pub fn object<T>(&mut self) -> Result<T, MsgParserError>
-        self.int().map(|i| ObjectId::from_raw(i as u32))
+    where
+        ObjectId: Into<T>,
+    {
+        self.int().map(|i| ObjectId::from_raw(i as u32).into())
     }
 
     pub fn global(&mut self) -> Result<GlobalName, MsgParserError> {