wayland: implement xdg-activation

src/ifs/xdg_activation_token_v1.rs

@@ -0,0 +1,108 @@
+use {
+    crate::{
+        client::{Client, ClientError},
+        leaks::Tracker,
+        object::Object,
+        utils::{
+            activation_token::{activation_token, ActivationToken},
+            buffd::{MsgParser, MsgParserError},
+        },
+        wire::{xdg_activation_token_v1::*, XdgActivationTokenV1Id},
+    },
+    std::{cell::Cell, rc::Rc},
+    thiserror::Error,
+};
+
+const MAX_TOKENS_PER_CLIENT: usize = 8;
+
+pub struct XdgActivationTokenV1 {
+    pub id: XdgActivationTokenV1Id,
+    pub client: Rc<Client>,
+    pub tracker: Tracker<Self>,
+    already_used: Cell<bool>,
+}
+
+impl XdgActivationTokenV1 {
+    pub fn new(id: XdgActivationTokenV1Id, client: &Rc<Client>) -> Self {
+        Self {
+            id,
+            client: client.clone(),
+            tracker: Default::default(),
+            already_used: Cell::new(false),
+        }
+    }
+
+    fn set_serial(&self, parser: MsgParser<'_, '_>) -> Result<(), XdgActivationTokenV1Error> {
+        let _req: SetSerial = self.client.parse(self, parser)?;
+        Ok(())
+    }
+
+    fn set_app_id(&self, parser: MsgParser<'_, '_>) -> Result<(), XdgActivationTokenV1Error> {
+        let _req: SetAppId = self.client.parse(self, parser)?;
+        Ok(())
+    }
+
+    fn set_surface(&self, parser: MsgParser<'_, '_>) -> Result<(), XdgActivationTokenV1Error> {
+        let req: SetSurface = self.client.parse(self, parser)?;
+        self.client.lookup(req.surface)?;
+        Ok(())
+    }
+
+    fn commit(&self, parser: MsgParser<'_, '_>) -> Result<(), XdgActivationTokenV1Error> {
+        let _req: Commit = self.client.parse(self, parser)?;
+        if self.already_used.replace(true) {
+            return Err(XdgActivationTokenV1Error::AlreadyUsed);
+        }
+        let token = activation_token();
+        self.client.state.activation_tokens.set(token, ());
+        let mut tokens = self.client.activation_tokens.borrow_mut();
+        if tokens.len() >= MAX_TOKENS_PER_CLIENT {
+            if let Some(oldest) = tokens.pop_front() {
+                self.client.state.activation_tokens.remove(&oldest);
+            }
+        }
+        tokens.push_back(token);
+        self.send_done(token);
+        Ok(())
+    }
+
+    fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), XdgActivationTokenV1Error> {
+        let _req: Destroy = self.client.parse(self, parser)?;
+        self.client.remove_obj(self)?;
+        Ok(())
+    }
+
+    fn send_done(&self, token: ActivationToken) {
+        let token = token.to_string();
+        self.client.event(Done {
+            self_id: self.id,
+            token: &token,
+        });
+    }
+}
+
+object_base! {
+    self = XdgActivationTokenV1;
+
+    SET_SERIAL => set_serial,
+    SET_APP_ID => set_app_id,
+    SET_SURFACE => set_surface,
+    COMMIT => commit,
+    DESTROY => destroy,
+}
+
+impl Object for XdgActivationTokenV1 {}
+
+simple_add_obj!(XdgActivationTokenV1);
+
+#[derive(Debug, Error)]
+pub enum XdgActivationTokenV1Error {
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+    #[error("Parsing failed")]
+    MsgParserError(#[source] Box<MsgParserError>),
+    #[error("The activation token has already been used")]
+    AlreadyUsed,
+}
+efrom!(XdgActivationTokenV1Error, ClientError);
+efrom!(XdgActivationTokenV1Error, MsgParserError);