wayland: implement wp-drm-lease-v1

src/ifs/wp_drm_lease_v1.rs

@@ -0,0 +1,92 @@
+use {
+    crate::{
+        backend::{BackendDrmLease, BackendDrmLessee},
+        client::{Client, ClientError},
+        leaks::Tracker,
+        object::{Object, Version},
+        utils::clonecell::CloneCell,
+        wire::{wp_drm_lease_v1::*, WpDrmLeaseV1Id},
+    },
+    std::{cell::Cell, rc::Rc},
+    thiserror::Error,
+    uapi::OwnedFd,
+};
+
+pub struct WpDrmLeaseV1Lessee {
+    pub obj: Rc<WpDrmLeaseV1>,
+}
+
+impl BackendDrmLessee for WpDrmLeaseV1Lessee {
+    fn created(&self, lease: Rc<dyn BackendDrmLease>) {
+        if !self.obj.finished.get() {
+            self.obj.send_lease_fd(lease.fd());
+            self.obj.lease.set(Some(lease));
+        }
+    }
+}
+
+impl Drop for WpDrmLeaseV1Lessee {
+    fn drop(&mut self) {
+        if !self.obj.finished.get() {
+            self.obj.detach();
+            self.obj.send_finished();
+        }
+    }
+}
+
+pub struct WpDrmLeaseV1 {
+    pub id: WpDrmLeaseV1Id,
+    pub client: Rc<Client>,
+    pub tracker: Tracker<Self>,
+    pub version: Version,
+    pub finished: Cell<bool>,
+    pub lease: CloneCell<Option<Rc<dyn BackendDrmLease>>>,
+}
+
+impl WpDrmLeaseV1 {
+    fn detach(&self) {
+        self.finished.set(true);
+        self.lease.take();
+    }
+
+    fn send_lease_fd(&self, fd: &Rc<OwnedFd>) {
+        self.client.event(LeaseFd {
+            self_id: self.id,
+            leased_fd: fd.clone(),
+        });
+    }
+
+    pub fn send_finished(&self) {
+        self.client.event(Finished { self_id: self.id });
+    }
+}
+
+impl WpDrmLeaseV1RequestHandler for WpDrmLeaseV1 {
+    type Error = WpDrmLeaseV1Error;
+
+    fn destroy(&self, _req: Destroy, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+        self.detach();
+        self.client.remove_obj(self)?;
+        Ok(())
+    }
+}
+
+object_base! {
+    self = WpDrmLeaseV1;
+    version = self.version;
+}
+
+impl Object for WpDrmLeaseV1 {
+    fn break_loops(&self) {
+        self.detach();
+    }
+}
+
+simple_add_obj!(WpDrmLeaseV1);
+
+#[derive(Debug, Error)]
+pub enum WpDrmLeaseV1Error {
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+}
+efrom!(WpDrmLeaseV1Error, ClientError);