autocommit 2022-02-06 16:33:54 CET

src/ifs/wl_data_offer.rs

@@ -0,0 +1,203 @@
+
+use crate::client::{Client, ClientError, DynEventFormatter};
+use crate::ifs::wl_data_source::WlDataSource;
+use crate::ifs::wl_seat::WlSeatGlobal;
+use crate::object::Object;
+use crate::utils::buffd::MsgParser;
+use crate::utils::clonecell::CloneCell;
+use std::ops::Deref;
+use std::rc::Rc;
+use thiserror::Error;
+use crate::wire::wl_data_offer::*;
+use crate::utils::buffd::MsgParserError;
+use crate::wire::WlDataOfferId;
+
+#[allow(dead_code)]
+const INVALID_FINISH: u32 = 0;
+#[allow(dead_code)]
+const INVALID_ACTION_MASK: u32 = 1;
+#[allow(dead_code)]
+const INVALID_ACTION: u32 = 2;
+#[allow(dead_code)]
+const INVALID_OFFER: u32 = 3;
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+pub enum DataOfferRole {
+    Selection,
+}
+
+pub struct WlDataOffer {
+    pub id: WlDataOfferId,
+    pub client: Rc<Client>,
+    pub role: DataOfferRole,
+    pub source: CloneCell<Option<Rc<WlDataSource>>>,
+}
+
+impl WlDataOffer {
+    pub fn create(
+        client: &Rc<Client>,
+        role: DataOfferRole,
+        src: &Rc<WlDataSource>,
+        seat: &Rc<WlSeatGlobal>,
+    ) -> Option<Rc<Self>> {
+        let id = match client.new_id() {
+            Ok(id) => id,
+            Err(e) => {
+                client.error(e);
+                return None;
+            }
+        };
+        let slf = Rc::new(Self {
+            id,
+            client: client.clone(),
+            role,
+            source: CloneCell::new(Some(src.clone())),
+        });
+        let mt = src.mime_types.borrow_mut();
+        seat.for_each_data_device(0, client.id, |device| {
+            client.event(device.data_offer(slf.id));
+            for mt in mt.deref() {
+                client.event(slf.offer(mt));
+            }
+            let ev = match role {
+                DataOfferRole::Selection => device.selection(id),
+            };
+            client.event(ev);
+        });
+        client.add_server_obj(&slf);
+        Some(slf)
+    }
+
+    pub fn offer(self: &Rc<Self>, mime_type: &str) -> DynEventFormatter {
+        Box::new(OfferOut {
+            self_id: self.id,
+            mime_type: mime_type.to_string(),
+        })
+    }
+
+    fn accept(&self, parser: MsgParser<'_, '_>) -> Result<(), AcceptError> {
+        let _req: AcceptIn = self.client.parse(self, parser)?;
+        Ok(())
+    }
+
+    fn receive(&self, parser: MsgParser<'_, '_>) -> Result<(), ReceiveError> {
+        let req: ReceiveIn = self.client.parse(self, parser)?;
+        if let Some(src) = self.source.get() {
+            src.client.event(src.send(req.mime_type, req.fd));
+            src.client.flush();
+        }
+        Ok(())
+    }
+
+    fn disconnect(&self) {
+        if let Some(src) = self.source.set(None) {
+            src.destroy_offer();
+        }
+    }
+
+    fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
+        let _req: Destroy = self.client.parse(self, parser)?;
+        self.disconnect();
+        self.client.remove_obj(self)?;
+        Ok(())
+    }
+
+    fn finish(&self, parser: MsgParser<'_, '_>) -> Result<(), FinishError> {
+        let _req: Finish = self.client.parse(self, parser)?;
+        Ok(())
+    }
+
+    fn set_actions(&self, parser: MsgParser<'_, '_>) -> Result<(), SetActionsError> {
+        let _req: SetActions = self.client.parse(self, parser)?;
+        Ok(())
+    }
+}
+
+object_base! {
+    WlDataOffer, WlDataOfferError;
+
+    ACCEPT => accept,
+    RECEIVE => receive,
+    DESTROY => destroy,
+    FINISH => finish,
+    SET_ACTIONS => set_actions,
+}
+
+impl Object for WlDataOffer {
+    fn num_requests(&self) -> u32 {
+        SET_ACTIONS + 1
+    }
+
+    fn break_loops(&self) {
+        self.disconnect();
+    }
+}
+
+simple_add_obj!(WlDataOffer);
+
+#[derive(Debug, Error)]
+pub enum WlDataOfferError {
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+    #[error("Could not process `accept` request")]
+    AcceptError(#[from] AcceptError),
+    #[error("Could not process `receive` request")]
+    ReceiveError(#[from] ReceiveError),
+    #[error("Could not process `destroy` request")]
+    DestroyError(#[from] DestroyError),
+    #[error("Could not process `finish` request")]
+    FinishError(#[from] FinishError),
+    #[error("Could not process `set_actions` request")]
+    SetActionsError(#[from] SetActionsError),
+}
+efrom!(WlDataOfferError, ClientError);
+
+#[derive(Debug, Error)]
+pub enum AcceptError {
+    #[error("Parsing failed")]
+    ParseFailed(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+}
+efrom!(AcceptError, ParseFailed, MsgParserError);
+efrom!(AcceptError, ClientError);
+
+#[derive(Debug, Error)]
+pub enum ReceiveError {
+    #[error("Parsing failed")]
+    ParseFailed(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+}
+efrom!(ReceiveError, ParseFailed, MsgParserError);
+efrom!(ReceiveError, ClientError);
+
+#[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);
+
+#[derive(Debug, Error)]
+pub enum FinishError {
+    #[error("Parsing failed")]
+    ParseFailed(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+}
+efrom!(FinishError, ParseFailed, MsgParserError);
+efrom!(FinishError, ClientError);
+
+#[derive(Debug, Error)]
+pub enum SetActionsError {
+    #[error("Parsing failed")]
+    ParseFailed(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+}
+efrom!(SetActionsError, ParseFailed, MsgParserError);
+efrom!(SetActionsError, ClientError);