refactor: fix handle_selection_request 8/7 args

Resolve Clippy's `too_many_arguments` lint on
`handle_selection_request` by removing the `success` and `refuse`
parameters and returning a bool indicating which needs to be run.

Use the helper functions defined last commit to simplify
`incr_copy_from_x11`

Reduce the `match` statement checking if the target is the TARGET
atom to an if statement. Although using `match` statements as
`if`/`else if`/`else` chains occur elsewhere, this one is both only 2
cases, and already of particular relevance to the current work.

Refactor `paste_impl` to be much easier to read. I did this code algebra
way back while investigating #142, but since I never figured that out,
the change has just been sitting in my stash.

refactor: simplify paste_data logic, some unnests
This commit is contained in:
En-En 2025-09-28 01:36:09 +00:00 committed by Supreeeme
parent 1ec45141e6
commit cc011f3251
4 changed files with 117 additions and 147 deletions

View file

@ -240,9 +240,10 @@ impl SelectionType for Clipboard {
fn receive_offer(offer: &Self::Offer, mime_type: String) -> std::io::Result<ReadPipe> {
offer.receive(mime_type).map_err(|e| {
use smithay_client_toolkit::data_device_manager::data_offer::DataOfferError;
match e {
smithay_client_toolkit::data_device_manager::data_offer::DataOfferError::InvalidReceive => std::io::Error::from(std::io::ErrorKind::Other),
smithay_client_toolkit::data_device_manager::data_offer::DataOfferError::Io(e) => e
DataOfferError::InvalidReceive => std::io::Error::from(std::io::ErrorKind::Other),
DataOfferError::Io(e) => e,
}
})
}

View file

@ -250,10 +250,8 @@ trait SelectionDataImpl {
atoms: &super::Atoms,
request: &x::SelectionRequestEvent,
max_req_bytes: usize,
success: &dyn Fn(),
refuse: &dyn Fn(),
server_state: &mut RealServerState,
);
) -> bool;
fn atom(&self) -> x::Atom;
}
@ -418,10 +416,8 @@ impl<T: SelectionType> SelectionDataImpl for SelectionData<T> {
atoms: &super::Atoms,
request: &x::SelectionRequestEvent,
max_req_bytes: usize,
success: &dyn Fn(),
refuse: &dyn Fn(),
server_state: &mut RealServerState,
) {
) -> bool {
let Some(CurrentSelection::Wayland(WaylandSelection {
mimes,
inner,
@ -429,88 +425,84 @@ impl<T: SelectionType> SelectionDataImpl for SelectionData<T> {
})) = &mut self.current_selection
else {
warn!("Got selection request, but we don't seem to be the selection owner");
refuse();
return;
return false;
};
match request.target() {
x if x == atoms.targets => {
let atoms: Box<[x::Atom]> = mimes.iter().map(|t| t.atom).collect();
let req_target = request.target();
if req_target == atoms.targets {
let atoms: Box<[x::Atom]> = mimes.iter().map(|t| t.atom).collect();
connection
.send_and_check_request(&x::ChangeProperty {
mode: x::PropMode::Replace,
window: request.requestor(),
property: request.property(),
r#type: x::ATOM_ATOM,
data: &atoms,
})
.unwrap();
connection
.send_and_check_request(&x::ChangeProperty {
mode: x::PropMode::Replace,
window: request.requestor(),
property: request.property(),
r#type: x::ATOM_ATOM,
data: &atoms,
})
.unwrap();
success();
}
other => {
let Some(target) = mimes.iter().find(|t| t.atom == other) else {
if log::log_enabled!(log::Level::Debug) {
let name = get_atom_name(connection, other);
debug!("refusing selection request because given atom could not be found ({name})");
}
refuse();
return;
};
let mime_name = target
.source
.as_ref()
.cloned()
.unwrap_or_else(|| target.name.clone());
let data = inner.receive(mime_name, server_state);
if data.len() > max_req_bytes {
if let Err(e) = connection.send_and_check_request(&x::ChangeWindowAttributes {
window: request.requestor(),
value_list: &[x::Cw::EventMask(x::EventMask::PROPERTY_CHANGE)],
}) {
warn!("Failed to set up property change notifications: {e:?}");
refuse();
return;
}
if let Err(e) = connection.send_and_check_request(&x::ChangeProperty {
mode: x::PropMode::Replace,
window: request.requestor(),
property: request.property(),
r#type: atoms.incr,
data: &[data.len() as u32],
}) {
warn!("Failed to set incr property for large transfer: {e:?}");
refuse();
return;
}
true
} else {
let Some(target) = mimes.iter().find(|t| t.atom == req_target) else {
if log::log_enabled!(log::Level::Debug) {
let name = get_atom_name(connection, req_target);
debug!(
"beginning incr for {}",
get_atom_name(connection, target.atom)
"refusing selection request because given atom could not be found ({name})"
);
*incr_data = Some(WaylandIncrInfo {
range: 0..data.len(),
data,
target_window: request.requestor(),
property: request.property(),
target_type: target.atom,
max_req_bytes,
});
success()
} else {
match connection.send_and_check_request(&x::ChangeProperty {
mode: x::PropMode::Replace,
window: request.requestor(),
property: request.property(),
r#type: target.atom,
data: &data,
}) {
Ok(_) => success(),
Err(e) => {
warn!("Failed setting selection property: {e:?}");
refuse();
}
}
return false;
};
let mime_name = target
.source
.as_ref()
.cloned()
.unwrap_or_else(|| target.name.clone());
let data = inner.receive(mime_name, server_state);
if data.len() > max_req_bytes {
if let Err(e) = connection.send_and_check_request(&x::ChangeWindowAttributes {
window: request.requestor(),
value_list: &[x::Cw::EventMask(x::EventMask::PROPERTY_CHANGE)],
}) {
warn!("Failed to set up property change notifications: {e:?}");
return false;
}
if let Err(e) = connection.send_and_check_request(&x::ChangeProperty {
mode: x::PropMode::Replace,
window: request.requestor(),
property: request.property(),
r#type: atoms.incr,
data: &[data.len() as u32],
}) {
warn!("Failed to set incr property for large transfer: {e:?}");
return false;
}
debug!(
"beginning incr for {}",
get_atom_name(connection, target.atom)
);
*incr_data = Some(WaylandIncrInfo {
range: 0..data.len(),
data,
target_window: request.requestor(),
property: request.property(),
target_type: target.atom,
max_req_bytes,
});
true
} else {
match connection.send_and_check_request(&x::ChangeProperty {
mode: x::PropMode::Replace,
window: request.requestor(),
property: request.property(),
r#type: target.atom,
data: &data,
}) {
Ok(_) => true,
Err(e) => {
warn!("Failed setting selection property: {e:?}");
false
}
}
}
@ -665,7 +657,7 @@ impl XState {
self.selection_state
.primary
.set_owner(&self.connection, self.wm_window);
debug!("Primaryset from Wayland");
debug!("Primary set from Wayland");
}
pub(super) fn handle_selection_event(
@ -771,15 +763,17 @@ impl XState {
return true;
}
data.handle_selection_request(
if data.handle_selection_request(
&self.connection,
&self.atoms,
e,
self.max_req_bytes,
&success,
&refuse,
server_state,
);
) {
success()
} else {
refuse()
}
}
xcb::Event::XFixes(xcb::xfixes::Event::SelectionNotify(e)) => match e.selection() {

View file

@ -1520,12 +1520,7 @@ fn incr_copy_from_x11() {
let request = connection.await_selection_request();
assert_eq!(request.target(), connection.atoms.mime1);
connection
.send_and_check_request(&x::ChangeWindowAttributes {
window: request.requestor(),
value_list: &[x::Cw::EventMask(x::EventMask::PROPERTY_CHANGE)],
})
.unwrap();
connection.get_property_change_events(request.requestor());
connection.set_property(
request.requestor(),
connection.atoms.incr,
@ -1534,10 +1529,7 @@ fn incr_copy_from_x11() {
);
connection.send_selection_notify(&request);
// skip NewValue
let notify = match connection.poll_for_event().unwrap() {
Some(xcb::Event::X(x::Event::PropertyNotify(p))) => p,
other => panic!("Didn't get property notify event, instead got {other:?}"),
};
let notify = connection.await_property_notify();
assert_eq!(notify.atom(), request.property());
assert_eq!(notify.state(), x::Property::NewValue);
request.property()
@ -1555,11 +1547,7 @@ fn incr_copy_from_x11() {
}
assert_ne!(destination_property, x::Atom::none());
let notify = match connection.await_event() {
xcb::Event::X(x::Event::PropertyNotify(p)) => p,
other => panic!("Didn't get property notify event, instead got {other:?}"),
};
let notify = connection.await_property_notify();
match it.next() {
Some((idx, chunk)) => {
assert_eq!(notify.atom(), destination_property, "chunk {idx}");
@ -1572,10 +1560,7 @@ fn incr_copy_from_x11() {
);
testwl.dispatch();
// skip NewValue
let notify = match connection.poll_for_event().unwrap() {
Some(xcb::Event::X(x::Event::PropertyNotify(p))) => p,
other => panic!("Didn't get property notify event, instead got {other:?}"),
};
let notify = connection.await_property_notify();
assert_eq!(notify.atom(), destination_property, "chunk {idx}");
assert_eq!(notify.state(), x::Property::NewValue, "chunk {idx}");
false

View file

@ -669,48 +669,38 @@ impl Server {
};
let mut ret = Vec::new();
let mut try_transfer =
|pending_ret: &mut PendingRet, mime: String, mut pending: PendingData| {
self.display.flush_clients().unwrap();
let transfer_complete = send_data_for_mime(&mime, self);
if transfer_complete {
pending.rx.read_to_end(&mut pending.data).unwrap();
ret.push(PasteData {
mime_type: mime,
data: pending.data,
});
} else {
loop {
match pending.rx.read(&mut pending.data) {
Ok(0) => break,
Ok(_) => {}
Err(e) if e.kind() == std::io::ErrorKind::WouldBlock => break,
Err(e) => panic!("Failed reading data for mime {mime}: {e:?}"),
}
}
pending_ret.push((mime, Some(pending)));
self.dispatch();
}
};
while let Some((mime, pending)) = pending_ret.pop() {
match pending {
Some(pending) => try_transfer(&mut pending_ret, mime, pending),
None => {
let (rx, tx) = rustix::pipe::pipe().unwrap();
send_selection(mime.clone(), tx.as_fd());
drop(tx);
let mut pending = pending.unwrap_or_else(|| {
let (rx, tx) = rustix::pipe::pipe().unwrap();
send_selection(mime.clone(), tx.as_fd());
drop(tx);
let rx = std::fs::File::from(rx);
try_transfer(
&mut pending_ret,
mime,
PendingData {
rx,
data: Vec::new(),
},
);
let rx = std::fs::File::from(rx);
PendingData {
rx,
data: Vec::new(),
}
});
self.display.flush_clients().unwrap();
let transfer_complete = send_data_for_mime(&mime, self);
if transfer_complete {
pending.rx.read_to_end(&mut pending.data).unwrap();
ret.push(PasteData {
mime_type: mime,
data: pending.data,
});
} else {
loop {
match pending.rx.read(&mut pending.data) {
Ok(0) => break,
Ok(_) => {}
Err(e) if e.kind() == std::io::ErrorKind::WouldBlock => break,
Err(e) => panic!("Failed reading data for mime {mime}: {e:?}"),
}
}
pending_ret.push((mime, Some(pending)));
self.dispatch();
}
}