portal: implement RemoteDesktop portal

src/wl_usr/usr_ifs.rs

@@ -1,4 +1,6 @@
 pub mod usr_jay_compositor;
+pub mod usr_jay_ei_session;
+pub mod usr_jay_ei_session_builder;
 pub mod usr_jay_output;
 pub mod usr_jay_pointer;
 pub mod usr_jay_render_ctx;

src/wl_usr/usr_ifs/usr_jay_compositor.rs

@@ -6,8 +6,9 @@ use {
         wire::{jay_compositor::*, JayCompositorId},
         wl_usr::{
             usr_ifs::{
-                usr_jay_output::UsrJayOutput, usr_jay_pointer::UsrJayPointer,
-                usr_jay_render_ctx::UsrJayRenderCtx, usr_jay_screencast::UsrJayScreencast,
+                usr_jay_ei_session_builder::UsrJayEiSessionBuilder, usr_jay_output::UsrJayOutput,
+                usr_jay_pointer::UsrJayPointer, usr_jay_render_ctx::UsrJayRenderCtx,
+                usr_jay_screencast::UsrJayScreencast,
                 usr_jay_select_toplevel::UsrJaySelectToplevel,
                 usr_jay_select_workspace::UsrJaySelectWorkspace,
                 usr_jay_workspace_watcher::UsrJayWorkspaceWatcher, usr_wl_output::UsrWlOutput,
@@ -156,6 +157,20 @@ impl UsrJayCompositor {
         self.con.add_object(sc.clone());
         sc
     }
+
+    pub fn create_ei_session(&self) -> Rc<UsrJayEiSessionBuilder> {
+        let obj = Rc::new(UsrJayEiSessionBuilder {
+            id: self.con.id(),
+            con: self.con.clone(),
+            version: self.version,
+        });
+        self.con.request(CreateEiSession {
+            self_id: self.id,
+            id: obj.id,
+        });
+        self.con.add_object(obj.clone());
+        obj
+    }
 }
 
 impl JayCompositorEventHandler for UsrJayCompositor {

src/wl_usr/usr_ifs/usr_jay_ei_session.rs

@@ -0,0 +1,72 @@
+use {
+    crate::{
+        object::Version,
+        utils::clonecell::CloneCell,
+        wire::{
+            jay_ei_session::{Created, Destroyed, Failed, JayEiSessionEventHandler, Release},
+            JayEiSessionId,
+        },
+        wl_usr::{usr_object::UsrObject, UsrCon},
+    },
+    std::{convert::Infallible, rc::Rc},
+    uapi::OwnedFd,
+};
+
+pub struct UsrJayEiSession {
+    pub id: JayEiSessionId,
+    pub con: Rc<UsrCon>,
+    pub owner: CloneCell<Option<Rc<dyn UsrJayEiSessionOwner>>>,
+    pub version: Version,
+}
+
+pub trait UsrJayEiSessionOwner {
+    fn destroyed(&self) {}
+
+    fn created(&self, fd: &Rc<OwnedFd>) {
+        let _ = fd;
+    }
+
+    fn failed(&self, reason: &str) {
+        let _ = reason;
+    }
+}
+
+impl JayEiSessionEventHandler for UsrJayEiSession {
+    type Error = Infallible;
+
+    fn destroyed(&self, _ev: Destroyed, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+        if let Some(owner) = self.owner.get() {
+            owner.destroyed();
+        }
+        Ok(())
+    }
+
+    fn created(&self, ev: Created, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+        if let Some(owner) = self.owner.get() {
+            owner.created(&ev.fd);
+        }
+        Ok(())
+    }
+
+    fn failed(&self, ev: Failed<'_>, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+        if let Some(owner) = self.owner.get() {
+            owner.failed(ev.reason);
+        }
+        Ok(())
+    }
+}
+
+usr_object_base! {
+    self = UsrJayEiSession = JayEiSession;
+    version = self.version;
+}
+
+impl UsrObject for UsrJayEiSession {
+    fn destroy(&self) {
+        self.con.request(Release { self_id: self.id });
+    }
+
+    fn break_loops(&self) {
+        self.owner.take();
+    }
+}

src/wl_usr/usr_ifs/usr_jay_ei_session_builder.rs

@@ -0,0 +1,57 @@
+use {
+    crate::{
+        object::Version,
+        wire::{
+            jay_ei_session_builder::{Commit, JayEiSessionBuilderEventHandler, SetAppId},
+            JayEiSessionBuilderId,
+        },
+        wl_usr::{usr_ifs::usr_jay_ei_session::UsrJayEiSession, usr_object::UsrObject, UsrCon},
+    },
+    std::{convert::Infallible, rc::Rc},
+};
+
+pub struct UsrJayEiSessionBuilder {
+    pub id: JayEiSessionBuilderId,
+    pub con: Rc<UsrCon>,
+    pub version: Version,
+}
+
+impl UsrJayEiSessionBuilder {
+    pub fn set_app_id(&self, app_id: &str) {
+        self.con.request(SetAppId {
+            self_id: self.id,
+            app_id,
+        });
+    }
+
+    pub fn commit(&self) -> Rc<UsrJayEiSession> {
+        let obj = Rc::new(UsrJayEiSession {
+            id: self.con.id(),
+            con: self.con.clone(),
+            owner: Default::default(),
+            version: self.version,
+        });
+        self.con.add_object(obj.clone());
+        self.con.request(Commit {
+            self_id: self.id,
+            id: obj.id,
+        });
+        self.con.remove_obj(self);
+        obj
+    }
+}
+
+impl JayEiSessionBuilderEventHandler for UsrJayEiSessionBuilder {
+    type Error = Infallible;
+}
+
+usr_object_base! {
+    self = UsrJayEiSessionBuilder = JayEiSessionBuilder;
+    version = self.version;
+}
+
+impl UsrObject for UsrJayEiSessionBuilder {
+    fn destroy(&self) {
+        // nothing
+    }
+}