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wl_usr: refactor interfaces

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This commit is contained in:
Julian Orth 2026-02-22 00:14:19 +01:00
parent 4b3d3a50cd
commit 56290d5547
12 changed files with 121 additions and 82 deletions
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51
src/portal/ptl_display.rs
View file

@ -2,6 +2,7 @@ use {
crate::{
gfx_api::{GfxApi, GfxFormat, cross_intersect_formats},
gfx_apis::create_gfx_context,
globals::GlobalName,
ifs::wl_seat::POINTER,
object::Version,
portal::{
@ -60,7 +61,7 @@ struct PortalDisplayPrelude {
con: Rc<UsrCon>,
state: Rc<PortalState>,
registry: Rc<UsrWlRegistry>,
globals: RefCell<AHashMap<String, Vec<(u32, u32)>>>,
globals: RefCell<AHashMap<String, Vec<(GlobalName, u32)>>>,
}
shared_ids!(PortalDisplayId);
@ -80,8 +81,8 @@ pub struct PortalDisplay {
pub vp: Rc<UsrWpViewporter>,
pub render_ctx: CloneCell<Option<Rc<PortalServerRenderCtx>>>,
pub outputs: CopyHashMap<u32, Rc<PortalOutput>>,
pub seats: CopyHashMap<u32, Rc<PortalSeat>>,
pub outputs: CopyHashMap<GlobalName, Rc<PortalOutput>>,
pub seats: CopyHashMap<GlobalName, Rc<PortalSeat>>,
pub workspaces: CopyHashMap<u32, Rc<UsrJayWorkspace>>,
pub windows: CopyHashMap<WlSurfaceId, Rc<WindowData>>,
@ -89,14 +90,14 @@ pub struct PortalDisplay {
}
pub struct PortalOutput {
pub global_id: u32,
pub global_id: GlobalName,
pub dpy: Rc<PortalDisplay>,
pub wl: Rc<UsrWlOutput>,
pub jay: Rc<UsrJayOutput>,
}
pub struct PortalSeat {
pub global_id: u32,
pub global_id: GlobalName,
pub dpy: Rc<PortalDisplay>,
pub wl: Rc<UsrWlSeat>,
pub jay_pointer: Rc<UsrJayPointer>,
@ -128,32 +129,32 @@ impl UsrWlSeatOwner for PortalSeat {
}
impl UsrWlPointerOwner for PortalSeat {
fn enter(&self, ev: &wl_pointer::Enter) {
fn enter(self: Rc<Self>, ev: &wl_pointer::Enter) {
if let Some(window) = self.dpy.windows.get(&ev.surface) {
self.pointer_focus.set(Some(window.clone()));
window.motion(self, ev.surface_x, ev.surface_y, true);
window.motion(&self, ev.surface_x, ev.surface_y, true);
}
}
fn leave(&self, _ev: &wl_pointer::Leave) {
fn leave(self: Rc<Self>, _ev: &wl_pointer::Leave) {
self.pointer_focus.take();
}
fn motion(&self, ev: &wl_pointer::Motion) {
fn motion(self: Rc<Self>, ev: &wl_pointer::Motion) {
if let Some(window) = self.pointer_focus.get() {
window.motion(self, ev.surface_x, ev.surface_y, false);
window.motion(&self, ev.surface_x, ev.surface_y, false);
}
}
fn button(&self, ev: &wl_pointer::Button) {
fn button(self: Rc<Self>, ev: &wl_pointer::Button) {
if let Some(window) = self.pointer_focus.get() {
window.button(self, ev.button, ev.state);
window.button(&self, ev.button, ev.state);
}
}
}
impl UsrWlRegistryOwner for PortalDisplayPrelude {
fn global(self: Rc<Self>, name: u32, interface: &str, version: u32) {
fn global(self: Rc<Self>, name: GlobalName, interface: &str, version: u32) {
self.globals
.borrow_mut()
.entry(interface.to_string())
@ -237,7 +238,7 @@ impl UsrConOwner for PortalDisplay {
}
impl UsrWlRegistryOwner for PortalDisplay {
fn global(self: Rc<Self>, name: u32, interface: &str, version: u32) {
fn global(self: Rc<Self>, name: GlobalName, interface: &str, version: u32) {
if interface == WlOutput.name() {
add_output(&self, name, version);
} else if interface == WlSeat.name() {
@ -250,7 +251,7 @@ impl UsrWlRegistryOwner for PortalDisplay {
version: Version(version.min(5)),
});
self.con.add_object(ls.clone());
self.registry.request_bind(name, ls.version.0, ls.deref());
self.registry.bind(name, ls.deref());
self.dmabuf.set(Some(ls));
}
}
@ -353,7 +354,7 @@ fn finish_display_connect(dpy: Rc<PortalDisplayPrelude>) {
version: Version(version.min(12)),
});
dpy.con.add_object(jc.clone());
dpy.registry.request_bind(name, jc.version.0, jc.deref());
dpy.registry.bind(name, jc.deref());
jc_opt = Some(jc);
} else if interface == WpFractionalScaleManagerV1.name() {
let ls = Rc::new(UsrWpFractionalScaleManager {
@ -362,7 +363,7 @@ fn finish_display_connect(dpy: Rc<PortalDisplayPrelude>) {
version: Version(version.min(1)),
});
dpy.con.add_object(ls.clone());
dpy.registry.request_bind(name, ls.version.0, ls.deref());
dpy.registry.bind(name, ls.deref());
fsm_opt = Some(ls);
} else if interface == ZwlrLayerShellV1.name() {
let ls = Rc::new(UsrWlrLayerShell {
@ -371,7 +372,7 @@ fn finish_display_connect(dpy: Rc<PortalDisplayPrelude>) {
version: Version(version.min(5)),
});
dpy.con.add_object(ls.clone());
dpy.registry.request_bind(name, ls.version.0, ls.deref());
dpy.registry.bind(name, ls.deref());
ls_opt = Some(ls);
} else if interface == WpViewporter.name() {
let ls = Rc::new(UsrWpViewporter {
@ -380,7 +381,7 @@ fn finish_display_connect(dpy: Rc<PortalDisplayPrelude>) {
version: Version(version.min(1)),
});
dpy.con.add_object(ls.clone());
dpy.registry.request_bind(name, ls.version.0, ls.deref());
dpy.registry.bind(name, ls.deref());
vp_opt = Some(ls);
} else if interface == WlCompositor.name() {
let ls = Rc::new(UsrWlCompositor {
@ -389,7 +390,7 @@ fn finish_display_connect(dpy: Rc<PortalDisplayPrelude>) {
version: Version(version.min(6)),
});
dpy.con.add_object(ls.clone());
dpy.registry.request_bind(name, ls.version.0, ls.deref());
dpy.registry.bind(name, ls.deref());
comp_opt = Some(ls);
} else if interface == ZwpLinuxDmabufV1.name() {
let ls = Rc::new(UsrLinuxDmabuf {
@ -399,7 +400,7 @@ fn finish_display_connect(dpy: Rc<PortalDisplayPrelude>) {
version: Version(version.min(5)),
});
dpy.con.add_object(ls.clone());
dpy.registry.request_bind(name, ls.version.0, ls.deref());
dpy.registry.bind(name, ls.deref());
dmabuf_opt = Some(ls);
} else if interface == WlOutput.name() {
outputs.push((name, version));
@ -465,7 +466,7 @@ fn finish_display_connect(dpy: Rc<PortalDisplayPrelude>) {
log::info!("Display {} initialized", dpy.id);
}
fn add_seat(dpy: &Rc<PortalDisplay>, name: u32, version: u32) {
fn add_seat(dpy: &Rc<PortalDisplay>, name: GlobalName, version: u32) {
let wl = Rc::new(UsrWlSeat {
id: dpy.con.id(),
con: dpy.con.clone(),
@ -473,7 +474,7 @@ fn add_seat(dpy: &Rc<PortalDisplay>, name: u32, version: u32) {
version: Version(version.min(9)),
});
dpy.con.add_object(wl.clone());
dpy.registry.request_bind(name, wl.version.0, wl.deref());
dpy.registry.bind(name, wl.deref());
let jay_pointer = dpy.jc.get_pointer(&wl);
let js = Rc::new(PortalSeat {
global_id: name,
@ -489,7 +490,7 @@ fn add_seat(dpy: &Rc<PortalDisplay>, name: u32, version: u32) {
dpy.seats.set(name, js);
}
fn add_output(dpy: &Rc<PortalDisplay>, name: u32, version: u32) {
fn add_output(dpy: &Rc<PortalDisplay>, name: GlobalName, version: u32) {
let wl = Rc::new(UsrWlOutput {
id: dpy.con.id(),
con: dpy.con.clone(),
@ -498,7 +499,7 @@ fn add_output(dpy: &Rc<PortalDisplay>, name: u32, version: u32) {
name: Default::default(),
});
dpy.con.add_object(wl.clone());
dpy.registry.request_bind(name, wl.version.0, wl.deref());
dpy.registry.bind(name, wl.deref());
let jo = dpy.jc.get_output(&wl);
let po = Rc::new(PortalOutput {
global_id: name,

3
src/portal/ptl_remote_desktop/remote_desktop_gui.rs
View file

@ -1,5 +1,6 @@
use {
crate::{
globals::GlobalName,
ifs::wl_seat::{BTN_LEFT, wl_pointer::PRESSED},
portal::{
ptl_display::{PortalDisplay, PortalOutput, PortalSeat},
@ -21,7 +22,7 @@ const V_MARGIN: f32 = 20.0;
pub struct SelectionGui {
remote_desktop_session: Rc<PortalSession>,
dpy: Rc<PortalDisplay>,
surfaces: CopyHashMap<u32, Rc<SelectionGuiSurface>>,
surfaces: CopyHashMap<GlobalName, Rc<SelectionGuiSurface>>,
}
pub struct SelectionGuiSurface {

5
src/portal/ptl_screencast/screencast_gui.rs
View file

@ -1,5 +1,6 @@
use {
crate::{
globals::GlobalName,
ifs::wl_seat::{BTN_LEFT, wl_pointer::PRESSED},
portal::{
ptl_display::{PortalDisplay, PortalOutput, PortalSeat},
@ -29,7 +30,7 @@ const V_MARGIN: f32 = 20.0;
pub struct SelectionGui {
screencast_session: Rc<PortalSession>,
dpy: Rc<PortalDisplay>,
surfaces: CopyHashMap<u32, Rc<SelectionGuiSurface>>,
surfaces: CopyHashMap<GlobalName, Rc<SelectionGuiSurface>>,
}
pub struct SelectionGuiSurface {
@ -254,7 +255,7 @@ impl UsrJaySelectToplevelOwner for SelectingWindowScreencast {
}
impl UsrJaySelectWorkspaceOwner for SelectingWorkspaceScreencast {
fn done(&self, output: u32, ws: Option<Rc<UsrJayWorkspace>>) {
fn done(&self, output: GlobalName, ws: Option<Rc<UsrJayWorkspace>>) {
let Some(ws) = ws else {
log::info!("User has aborted the selection");
self.core.session.kill();

25
src/portal/ptr_gui.rs
View file

@ -10,6 +10,7 @@ use {
AcquireSync, AlphaMode, GfxContext, GfxFramebuffer, GfxTexture, ReleaseSync,
needs_render_usage,
},
globals::GlobalName,
ifs::zwlr_layer_shell_v1::OVERLAY,
portal::{
ptl_display::{PortalDisplay, PortalOutput, PortalSeat},
@ -29,6 +30,7 @@ use {
wl_usr::usr_ifs::{
usr_linux_buffer_params::{UsrLinuxBufferParams, UsrLinuxBufferParamsOwner},
usr_wl_buffer::{UsrWlBuffer, UsrWlBufferOwner},
usr_wl_callback::UsrWlCallbackOwner,
usr_wl_surface::UsrWlSurface,
usr_wlr_layer_surface::{UsrWlrLayerSurface, UsrWlrLayerSurfaceOwner},
usr_wp_fractional_scale::{UsrWpFractionalScale, UsrWpFractionalScaleOwner},
@ -116,7 +118,7 @@ pub struct Button {
pub data: GuiElementData,
pub tex_off_x: Cell<f32>,
pub tex_off_y: Cell<f32>,
pub hover: RefCell<AHashSet<u32>>,
pub hover: RefCell<AHashSet<GlobalName>>,
pub padding: Cell<f32>,
pub border: Cell<f32>,
pub border_color: Cell<Color>,
@ -504,7 +506,7 @@ pub struct WindowData {
pub width: Cell<i32>,
pub height: Cell<i32>,
pub owner: CloneCell<Option<Rc<dyn WindowDataOwner>>>,
pub seats: CopyHashMap<u32, Rc<GuiWindowSeatState>>,
pub seats: CopyHashMap<GlobalName, Rc<GuiWindowSeatState>>,
}
#[derive(Default)]
@ -666,15 +668,7 @@ impl WindowData {
self.frame_missed.set(false);
self.surface.frame({
let slf = self.clone();
move || {
slf.have_frame.set(true);
if slf.frame_missed.get() {
slf.schedule_render();
}
}
});
self.surface.frame().owner.set(Some(self.clone()));
self.have_frame.set(false);
buf.free.set(false);
@ -901,6 +895,15 @@ impl UsrWpFractionalScaleOwner for WindowData {
}
}
impl UsrWlCallbackOwner for WindowData {
fn done(self: Rc<Self>) {
self.have_frame.set(true);
if self.frame_missed.get() {
self.schedule_render();
}
}
}
impl UsrWlrLayerSurfaceOwner for OverlayWindow {
fn configure(&self, _ev: &Configure) {
self.data.schedule_render();

29
src/wl_usr.rs
View file

@ -40,7 +40,7 @@ use {
rc::Rc,
},
thiserror::Error,
uapi::c,
uapi::{OwnedFd, c},
};
#[derive(Debug, Error)]
@ -119,6 +119,24 @@ impl UsrCon {
if let Err(e) = ring.connect(&socket, &addr).await {
return Err(UsrConError::Connect(e));
}
Ok(Self::from_socket(
ring,
wheel,
eng,
dma_buf_ids,
&socket,
server_id,
))
}
pub fn from_socket(
ring: &Rc<IoUring>,
wheel: &Rc<Wheel>,
eng: &Rc<AsyncEngine>,
dma_buf_ids: &Rc<DmaBufIds>,
socket: &Rc<OwnedFd>,
server_id: u32,
) -> Rc<Self> {
let mut obj_ids = Bitfield::default();
obj_ids.take(0);
obj_ids.take(1);
@ -150,7 +168,7 @@ impl UsrCon {
"wl_usr incoming",
Incoming {
con: slf.clone(),
buf: BufFdIn::new(&socket, &slf.ring),
buf: BufFdIn::new(socket, &slf.ring),
data: vec![],
}
.run(),
@ -161,13 +179,13 @@ impl UsrCon {
"wl_usr outgoing",
Outgoing {
con: slf.clone(),
buf: BufFdOut::new(&socket, &slf.ring),
buf: BufFdOut::new(socket, &slf.ring),
buffers: Default::default(),
}
.run(),
),
));
Ok(slf)
slf
}
pub fn kill(&self) {
@ -224,7 +242,8 @@ impl UsrCon {
where
F: FnOnce() + 'static,
{
let callback = Rc::new(UsrWlCallback::new(self, handler));
let callback = Rc::new(UsrWlCallback::new(self));
callback.owner.set(Some(Rc::new(Cell::new(Some(handler)))));
self.request(wl_display::Sync {
self_id: WL_DISPLAY_ID,
callback: callback.id,

9
src/wl_usr/usr_ifs/usr_jay_select_workspace.rs
View file

@ -1,5 +1,6 @@
use {
crate::{
globals::GlobalName,
object::Version,
utils::clonecell::CloneCell,
wire::{JaySelectWorkspaceId, jay_select_workspace::*},
@ -9,7 +10,7 @@ use {
usr_object::UsrObject,
},
},
std::{convert::Infallible, rc::Rc},
std::{cell::Cell, convert::Infallible, rc::Rc},
};
pub struct UsrJaySelectWorkspace {
@ -20,7 +21,7 @@ pub struct UsrJaySelectWorkspace {
}
pub trait UsrJaySelectWorkspaceOwner {
fn done(&self, output: u32, ws: Option<Rc<UsrJayWorkspace>>);
fn done(&self, output: GlobalName, ws: Option<Rc<UsrJayWorkspace>>);
}
impl JaySelectWorkspaceEventHandler for UsrJaySelectWorkspace {
@ -28,7 +29,7 @@ impl JaySelectWorkspaceEventHandler for UsrJaySelectWorkspace {
fn cancelled(&self, _ev: Cancelled, _slf: &Rc<Self>) -> Result<(), Self::Error> {
if let Some(owner) = self.owner.get() {
owner.done(0, None);
owner.done(GlobalName::from_raw(0), None);
}
self.con.remove_obj(self);
Ok(())
@ -41,7 +42,7 @@ impl JaySelectWorkspaceEventHandler for UsrJaySelectWorkspace {
owner: Default::default(),
version: self.version,
linear_id: Default::default(),
output: Default::default(),
output: Cell::new(GlobalName::from_raw(0)),
name: Default::default(),
});
self.con.add_object(tl.clone());

5
src/wl_usr/usr_ifs/usr_jay_workspace.rs
View file

@ -1,5 +1,6 @@
use {
crate::{
globals::GlobalName,
object::Version,
utils::clonecell::CloneCell,
wire::{JayWorkspaceId, jay_workspace::*},
@ -18,7 +19,7 @@ pub struct UsrJayWorkspace {
pub owner: CloneCell<Option<Rc<dyn UsrJayWorkspaceOwner>>>,
pub version: Version,
pub linear_id: Cell<u32>,
pub output: Cell<u32>,
pub output: Cell<GlobalName>,
pub name: RefCell<Option<String>>,
}
@ -68,7 +69,7 @@ impl JayWorkspaceEventHandler for UsrJayWorkspace {
}
fn output(&self, ev: Output, _slf: &Rc<Self>) -> Result<(), Self::Error> {
self.output.set(ev.global_name);
self.output.set(GlobalName::from_raw(ev.global_name));
if let Some(owner) = self.owner.get() {
owner.output(&ev);
}

5
src/wl_usr/usr_ifs/usr_jay_workspace_watcher.rs
View file

@ -1,11 +1,12 @@
use {
crate::{
globals::GlobalName,
object::Version,
utils::clonecell::CloneCell,
wire::{JayWorkspaceWatcherId, jay_workspace_watcher::*},
wl_usr::{UsrCon, usr_ifs::usr_jay_workspace::UsrJayWorkspace, usr_object::UsrObject},
},
std::{convert::Infallible, ops::Deref, rc::Rc},
std::{cell::Cell, convert::Infallible, ops::Deref, rc::Rc},
};
pub struct UsrJayWorkspaceWatcher {
@ -32,7 +33,7 @@ impl JayWorkspaceWatcherEventHandler for UsrJayWorkspaceWatcher {
owner: Default::default(),
version: self.version,
linear_id: Default::default(),
output: Default::default(),
output: Cell::new(GlobalName::from_raw(0)),
name: Default::default(),
});
self.con.add_object(jw.clone());

30
src/wl_usr/usr_ifs/usr_wl_callback.rs
View file

@ -10,19 +10,31 @@ use {
pub struct UsrWlCallback {
pub id: WlCallbackId,
pub con: Rc<UsrCon>,
pub handler: Cell<Option<Box<dyn FnOnce()>>>,
pub owner: Cell<Option<Rc<dyn UsrWlCallbackOwner>>>,
pub version: Version,
}
pub trait UsrWlCallbackOwner {
fn done(self: Rc<Self>);
}
impl<T> UsrWlCallbackOwner for Cell<Option<T>>
where
T: FnOnce() + 'static,
{
fn done(self: Rc<Self>) {
if let Some(slf) = self.take() {
slf();
}
}
}
impl UsrWlCallback {
pub fn new<F>(con: &Rc<UsrCon>, handler: F) -> Self
where
F: FnOnce() + 'static,
{
pub fn new(con: &Rc<UsrCon>) -> Self {
Self {
id: con.id(),
con: con.clone(),
handler: Cell::new(Some(Box::new(handler))),
owner: Default::default(),
version: Version(1),
}
}
@ -32,8 +44,8 @@ impl WlCallbackEventHandler for UsrWlCallback {
type Error = Infallible;
fn done(&self, _ev: Done, _slf: &Rc<Self>) -> Result<(), Self::Error> {
if let Some(handler) = self.handler.take() {
handler();
if let Some(handler) = self.owner.take() {
handler.done();
}
self.con.remove_obj(self);
Ok(())
@ -51,6 +63,6 @@ impl UsrObject for UsrWlCallback {
}
fn break_loops(&self) {
self.handler.take();
self.owner.take();
}
}

16
src/wl_usr/usr_ifs/usr_wl_pointer.rs
View file

@ -3,7 +3,7 @@ use {
ifs::wl_seat::wl_pointer::PendingScroll,
object::Version,
utils::clonecell::CloneCell,
wire::{WlPointerId, wl_pointer::*},
wire::{WlPointerId, WlSurfaceId, wl_pointer::*},
wl_usr::{UsrCon, usr_ifs::usr_wl_surface::UsrWlSurface, usr_object::UsrObject},
},
std::{cell::Cell, convert::Infallible, rc::Rc},
@ -19,34 +19,34 @@ pub struct UsrWlPointer {
}
pub trait UsrWlPointerOwner {
fn enter(&self, ev: &Enter) {
fn enter(self: Rc<Self>, ev: &Enter) {
let _ = ev;
}
fn leave(&self, ev: &Leave) {
fn leave(self: Rc<Self>, ev: &Leave) {
let _ = ev;
}
fn motion(&self, ev: &Motion) {
fn motion(self: Rc<Self>, ev: &Motion) {
let _ = ev;
}
fn button(&self, ev: &Button) {
fn button(self: Rc<Self>, ev: &Button) {
let _ = ev;
}
fn scroll(&self, ps: &PendingScroll) {
fn scroll(self: Rc<Self>, ps: &PendingScroll) {
let _ = ps;
}
}
impl UsrWlPointer {
#[expect(dead_code)]
pub fn set_cursor(&self, serial: u32, cursor: &UsrWlSurface, hot_x: i32, hot_y: i32) {
pub fn set_cursor(&self, serial: u32, cursor: Option<&UsrWlSurface>, hot_x: i32, hot_y: i32) {
self.con.request(SetCursor {
self_id: self.id,
serial,
surface: cursor.id,
surface: cursor.map(|c| c.id).unwrap_or(WlSurfaceId::NONE),
hotspot_x: hot_x,
hotspot_y: hot_y,
});

15
src/wl_usr/usr_ifs/usr_wl_registry.rs
View file

@ -1,5 +1,6 @@
use {
crate::{
globals::GlobalName,
object::Version,
utils::clonecell::CloneCell,
wire::{WlRegistryId, wl_registry::*},
@ -16,24 +17,24 @@ pub struct UsrWlRegistry {
}
pub trait UsrWlRegistryOwner {
fn global(self: Rc<Self>, name: u32, interface: &str, version: u32) {
fn global(self: Rc<Self>, name: GlobalName, interface: &str, version: u32) {
let _ = name;
let _ = interface;
let _ = version;
}
fn global_remove(&self, name: u32) {
fn global_remove(&self, name: GlobalName) {
let _ = name;
}
}
impl UsrWlRegistry {
pub fn request_bind(&self, name: u32, version: u32, obj: &dyn UsrObject) {
pub fn bind(&self, name: GlobalName, obj: &dyn UsrObject) {
self.con.request(Bind {
self_id: self.id,
name,
name: name.raw(),
interface: obj.interface().name(),
version,
version: obj.version().0,
id: obj.id(),
});
}
@ -44,14 +45,14 @@ impl WlRegistryEventHandler for UsrWlRegistry {
fn global(&self, ev: Global<'_>, _slf: &Rc<Self>) -> Result<(), Self::Error> {
if let Some(owner) = self.owner.get() {
owner.global(ev.name, ev.interface, ev.version);
owner.global(GlobalName::from_raw(ev.name), ev.interface, ev.version);
}
Ok(())
}
fn global_remove(&self, ev: GlobalRemove, _slf: &Rc<Self>) -> Result<(), Self::Error> {
if let Some(owner) = self.owner.get() {
owner.global_remove(ev.name);
owner.global_remove(GlobalName::from_raw(ev.name));
}
Ok(())
}

10
src/wl_usr/usr_ifs/usr_wl_surface.rs
View file

@ -37,16 +37,14 @@ impl UsrWlSurface {
});
}
pub fn frame<F>(&self, f: F)
where
F: FnOnce() + 'static,
{
let cb = Rc::new(UsrWlCallback::new(&self.con, f));
pub fn frame(&self) -> Rc<UsrWlCallback> {
let cb = Rc::new(UsrWlCallback::new(&self.con));
self.con.request(Frame {
self_id: self.id,
callback: cb.id,
});
self.con.add_object(cb);
self.con.add_object(cb.clone());
cb
}
pub fn commit(&self) {