Update README.md

client configuration now applies immediately instead of after enabling / disabling clients.
Also fixes a potential feedback loop when changing settings.

README.md

@@ -144,10 +144,11 @@ rust toolchain.
 Additionally, available backends and frontends can be configured manually via
 [cargo features](https://doc.rust-lang.org/cargo/reference/features.html).
 
-E.g. if only wayland support is needed, the following command produces
-an executable with just support for wayland:
+E.g. if only support for sway is needed, the following command produces
+an executable with support for only the `layer-shell` capture backend
+and `wlroots` emulation backend:
 ```sh
-cargo build --no-default-features --features wayland
+cargo build --no-default-features --features layer_shell_capture,wlroots_emulation
 ```
 For a detailed list of available features, checkout the [Cargo.toml](./Cargo.toml)
 </details>

lan-mouse-cli/src/lib.rs

@@ -30,7 +30,6 @@ pub fn run() -> Result<(), IpcError> {
 
 struct Cli {
     clients: Vec<(ClientHandle, ClientConfig, ClientState)>,
-    changed: Option<ClientHandle>,
     rx: AsyncFrontendEventReader,
     tx: AsyncFrontendRequestWriter,
 }
@@ -39,7 +38,6 @@ impl Cli {
     fn new(rx: AsyncFrontendEventReader, tx: AsyncFrontendRequestWriter) -> Cli {
         Self {
             clients: vec![],
-            changed: None,
             rx,
             tx,
         }
@@ -87,23 +85,9 @@ impl Cli {
                     }
                 }
             }
-            if let Some(handle) = self.changed.take() {
-                self.update_client(handle).await?;
-            }
         }
     }
 
-    async fn update_client(&mut self, handle: ClientHandle) -> Result<(), IpcError> {
-        self.tx.request(FrontendRequest::GetState(handle)).await?;
-        while let Some(Ok(event)) = self.rx.next().await {
-            self.handle_event(event.clone());
-            if let FrontendEvent::State(_, _, _) | FrontendEvent::NoSuchClient(_) = event {
-                break;
-            }
-        }
-        Ok(())
-    }
-
     async fn execute(&mut self, cmd: Command) -> Result<(), IpcError> {
         match cmd {
             Command::None => {}
@@ -131,7 +115,6 @@ impl Cli {
                 ] {
                     self.tx.request(request).await?;
                 }
-                self.update_client(handle).await?;
             }
             Command::Disconnect(id) => {
                 self.tx.request(FrontendRequest::Delete(id)).await?;
@@ -147,13 +130,11 @@ impl Cli {
             }
             Command::Activate(id) => {
                 self.tx.request(FrontendRequest::Activate(id, true)).await?;
-                self.update_client(id).await?;
             }
             Command::Deactivate(id) => {
                 self.tx
                     .request(FrontendRequest::Activate(id, false))
                     .await?;
-                self.update_client(id).await?;
             }
             Command::List => {
                 self.tx.request(FrontendRequest::Enumerate()).await?;
@@ -168,12 +149,10 @@ impl Cli {
             Command::SetHost(handle, host) => {
                 let request = FrontendRequest::UpdateHostname(handle, Some(host.clone()));
                 self.tx.request(request).await?;
-                self.update_client(handle).await?;
             }
             Command::SetPort(handle, port) => {
                 let request = FrontendRequest::UpdatePort(handle, port.unwrap_or(DEFAULT_PORT));
                 self.tx.request(request).await?;
-                self.update_client(handle).await?;
             }
             Command::Help => {
                 for cmd_type in [
@@ -209,7 +188,6 @@ impl Cli {
 
     fn handle_event(&mut self, event: FrontendEvent) {
         match event {
-            FrontendEvent::Changed(h) => self.changed = Some(h),
             FrontendEvent::Created(h, c, s) => {
                 eprint!("client added ({h}): ");
                 print_config(&c);

lan-mouse-gtk/resources/client_row.ui

@@ -5,7 +5,6 @@
 		<!-- enabled -->
 		<child type="prefix">
 			<object class="GtkSwitch" id="enable_switch">
-				<signal name="state_set" handler="handle_client_set_state" swapped="true"/>
 				<property name="valign">center</property>
 				<property name="halign">end</property>
 				<property name="tooltip-text" translatable="yes">enable</property>

lan-mouse-gtk/src/client_object/imp.rs

@@ -13,7 +13,7 @@ use super::ClientData;
 #[properties(wrapper_type = super::ClientObject)]
 pub struct ClientObject {
     #[property(name = "handle", get, set, type = ClientHandle, member = handle)]
-    #[property(name = "hostname", get, set, type = String, member = hostname)]
+    #[property(name = "hostname", get, set, type = Option<String>, member = hostname)]
     #[property(name = "port", get, set, type = u32, member = port, maximum = u16::MAX as u32)]
     #[property(name = "active", get, set, type = bool, member = active)]
     #[property(name = "position", get, set, type = String, member = position)]

lan-mouse-gtk/src/client_row.rs

@@ -4,7 +4,7 @@ use adw::prelude::*;
 use adw::subclass::prelude::*;
 use gtk::glib::{self, Object};
 
-use lan_mouse_ipc::DEFAULT_PORT;
+use lan_mouse_ipc::{Position, DEFAULT_PORT};
 
 use super::ClientObject;
 
@@ -15,25 +15,32 @@ glib::wrapper! {
 }
 
 impl ClientRow {
-    pub fn new(_client_object: &ClientObject) -> Self {
-        Object::builder().build()
+    pub fn new(client_object: &ClientObject) -> Self {
+        let client_row: Self = Object::builder().build();
+        client_row
+            .imp()
+            .client_object
+            .borrow_mut()
+            .replace(client_object.clone());
+        client_row
     }
 
     pub fn bind(&self, client_object: &ClientObject) {
         let mut bindings = self.imp().bindings.borrow_mut();
 
+        // bind client active to switch state
         let active_binding = client_object
             .bind_property("active", &self.imp().enable_switch.get(), "state")
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind client active to switch position
         let switch_position_binding = client_object
             .bind_property("active", &self.imp().enable_switch.get(), "active")
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind hostname to hostname edit field
         let hostname_binding = client_object
             .bind_property("hostname", &self.imp().hostname.get(), "text")
             .transform_to(|_, v: Option<String>| {
@@ -43,72 +50,48 @@ impl ClientRow {
                     Some("".to_string())
                 }
             })
-            .transform_from(|_, v: String| {
-                if v.as_str().trim() == "" {
-                    Some(None)
-                } else {
-                    Some(Some(v))
-                }
-            })
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind hostname to title
         let title_binding = client_object
             .bind_property("hostname", self, "title")
-            .transform_to(|_, v: Option<String>| {
-                if let Some(hostname) = v {
-                    Some(hostname)
-                } else {
-                    Some("<span font_style=\"italic\" font_weight=\"light\" foreground=\"darkgrey\">no hostname!</span>".to_string())
-                }
-            })
+            .transform_to(|_, v: Option<String>| v.or(Some("<span font_style=\"italic\" font_weight=\"light\" foreground=\"darkgrey\">no hostname!</span>".to_string())))
             .sync_create()
             .build();
 
+        // bind port to port edit field
         let port_binding = client_object
             .bind_property("port", &self.imp().port.get(), "text")
-            .transform_from(|_, v: String| {
-                if v.is_empty() {
-                    Some(DEFAULT_PORT as u32)
-                } else {
-                    Some(v.parse::<u16>().unwrap_or(DEFAULT_PORT) as u32)
-                }
-            })
             .transform_to(|_, v: u32| {
-                if v == 4242 {
+                if v == DEFAULT_PORT as u32 {
                     Some("".to_string())
                 } else {
                     Some(v.to_string())
                 }
             })
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind port to subtitle
         let subtitle_binding = client_object
             .bind_property("port", self, "subtitle")
             .sync_create()
             .build();
 
+        // bind position to selected position
         let position_binding = client_object
             .bind_property("position", &self.imp().position.get(), "selected")
-            .transform_from(|_, v: u32| match v {
-                1 => Some("right"),
-                2 => Some("top"),
-                3 => Some("bottom"),
-                _ => Some("left"),
-            })
             .transform_to(|_, v: String| match v.as_str() {
-                "right" => Some(1),
+                "right" => Some(1u32),
                 "top" => Some(2u32),
                 "bottom" => Some(3u32),
                 _ => Some(0u32),
             })
-            .bidirectional()
             .sync_create()
             .build();
 
+        // bind resolving status to spinner visibility
         let resolve_binding = client_object
             .bind_property(
                 "resolving",
@@ -118,6 +101,7 @@ impl ClientRow {
             .sync_create()
             .build();
 
+        // bind ips to tooltip-text
         let ip_binding = client_object
             .bind_property("ips", &self.imp().dns_button.get(), "tooltip-text")
             .transform_to(|_, ips: Vec<String>| {
@@ -146,4 +130,24 @@ impl ClientRow {
             binding.unbind();
         }
     }
+
+    pub fn set_active(&self, active: bool) {
+        self.imp().set_active(active);
+    }
+
+    pub fn set_hostname(&self, hostname: Option<String>) {
+        self.imp().set_hostname(hostname);
+    }
+
+    pub fn set_port(&self, port: u16) {
+        self.imp().set_port(port);
+    }
+
+    pub fn set_position(&self, pos: Position) {
+        self.imp().set_pos(pos);
+    }
+
+    pub fn set_dns_state(&self, resolved: bool) {
+        self.imp().set_dns_state(resolved);
+    }
 }

lan-mouse-gtk/src/client_row/imp.rs

@@ -3,11 +3,14 @@ use std::cell::RefCell;
 use adw::subclass::prelude::*;
 use adw::{prelude::*, ActionRow, ComboRow};
 use glib::{subclass::InitializingObject, Binding};
-use gtk::glib::clone;
 use gtk::glib::subclass::Signal;
-use gtk::{glib, Button, CompositeTemplate, Switch};
+use gtk::glib::{clone, SignalHandlerId};
+use gtk::{glib, Button, CompositeTemplate, Entry, Switch};
+use lan_mouse_ipc::Position;
 use std::sync::OnceLock;
 
+use crate::client_object::ClientObject;
+
 #[derive(CompositeTemplate, Default)]
 #[template(resource = "/de/feschber/LanMouse/client_row.ui")]
 pub struct ClientRow {
@@ -28,6 +31,11 @@ pub struct ClientRow {
     #[template_child]
     pub dns_loading_indicator: TemplateChild<gtk::Spinner>,
     pub bindings: RefCell<Vec<Binding>>,
+    hostname_change_handler: RefCell<Option<SignalHandlerId>>,
+    port_change_handler: RefCell<Option<SignalHandlerId>>,
+    position_change_handler: RefCell<Option<SignalHandlerId>>,
+    set_state_handler: RefCell<Option<SignalHandlerId>>,
+    pub client_object: RefCell<Option<ClientObject>>,
 }
 
 #[glib::object_subclass]
@@ -59,17 +67,61 @@ impl ObjectImpl for ClientRow {
                 row.handle_client_delete(button);
             }
         ));
+        let handler = self.hostname.connect_changed(clone!(
+            #[weak(rename_to = row)]
+            self,
+            move |entry| {
+                row.handle_hostname_changed(entry);
+            }
+        ));
+        self.hostname_change_handler.replace(Some(handler));
+        let handler = self.port.connect_changed(clone!(
+            #[weak(rename_to = row)]
+            self,
+            move |entry| {
+                row.handle_port_changed(entry);
+            }
+        ));
+        self.port_change_handler.replace(Some(handler));
+        let handler = self.position.connect_selected_notify(clone!(
+            #[weak(rename_to = row)]
+            self,
+            move |position| {
+                row.handle_position_changed(position);
+            }
+        ));
+        self.position_change_handler.replace(Some(handler));
+        let handler = self.enable_switch.connect_state_set(clone!(
+            #[weak(rename_to = row)]
+            self,
+            #[upgrade_or]
+            glib::Propagation::Proceed,
+            move |switch, state| {
+                row.handle_activate_switch(state, switch);
+                glib::Propagation::Proceed
+            }
+        ));
+        self.set_state_handler.replace(Some(handler));
     }
 
     fn signals() -> &'static [glib::subclass::Signal] {
         static SIGNALS: OnceLock<Vec<Signal>> = OnceLock::new();
         SIGNALS.get_or_init(|| {
             vec![
-                Signal::builder("request-dns").build(),
-                Signal::builder("request-update")
+                Signal::builder("request-activate")
                     .param_types([bool::static_type()])
                     .build(),
                 Signal::builder("request-delete").build(),
+                Signal::builder("request-dns").build(),
+                Signal::builder("request-hostname-change")
+                    .param_types([String::static_type()])
+                    .build(),
+                Signal::builder("request-port-change")
+                    .param_types([u32::static_type()])
+                    .build(),
+                Signal::builder("request-position-change")
+                    .param_types([u32::static_type()])
+                    .build(),
             ]
         })
     }
@@ -78,22 +130,97 @@ impl ObjectImpl for ClientRow {
 #[gtk::template_callbacks]
 impl ClientRow {
     #[template_callback]
-    fn handle_client_set_state(&self, state: bool, _switch: &Switch) -> bool {
-        log::debug!("state change -> requesting update");
-        self.obj().emit_by_name::<()>("request-update", &[&state]);
+    fn handle_activate_switch(&self, state: bool, _switch: &Switch) -> bool {
+        self.obj().emit_by_name::<()>("request-activate", &[&state]);
         true // dont run default handler
     }
 
     #[template_callback]
-    fn handle_request_dns(&self, _: Button) {
+    fn handle_request_dns(&self, _: &Button) {
         self.obj().emit_by_name::<()>("request-dns", &[]);
     }
 
     #[template_callback]
     fn handle_client_delete(&self, _button: &Button) {
-        log::debug!("delete button pressed -> requesting delete");
         self.obj().emit_by_name::<()>("request-delete", &[]);
     }
+
+    fn handle_port_changed(&self, port_entry: &Entry) {
+        if let Ok(port) = port_entry.text().parse::<u16>() {
+            self.obj()
+                .emit_by_name::<()>("request-port-change", &[&(port as u32)]);
+        }
+    }
+
+    fn handle_hostname_changed(&self, hostname_entry: &Entry) {
+        self.obj()
+            .emit_by_name::<()>("request-hostname-change", &[&hostname_entry.text()]);
+    }
+
+    fn handle_position_changed(&self, position: &ComboRow) {
+        self.obj()
+            .emit_by_name("request-position-change", &[&position.selected()])
+    }
+
+    pub(super) fn set_hostname(&self, hostname: Option<String>) {
+        let position = self.hostname.position();
+        let handler = self.hostname_change_handler.borrow();
+        let handler = handler.as_ref().expect("signal handler");
+        self.hostname.block_signal(handler);
+        self.client_object
+            .borrow_mut()
+            .as_mut()
+            .expect("client object")
+            .set_property("hostname", hostname);
+        self.hostname.unblock_signal(handler);
+        self.hostname.set_position(position);
+    }
+
+    pub(super) fn set_port(&self, port: u16) {
+        let position = self.port.position();
+        let handler = self.port_change_handler.borrow();
+        let handler = handler.as_ref().expect("signal handler");
+        self.port.block_signal(handler);
+        self.client_object
+            .borrow_mut()
+            .as_mut()
+            .expect("client object")
+            .set_port(port as u32);
+        self.port.unblock_signal(handler);
+        self.port.set_position(position);
+    }
+
+    pub(super) fn set_pos(&self, pos: Position) {
+        let handler = self.position_change_handler.borrow();
+        let handler = handler.as_ref().expect("signal handler");
+        self.position.block_signal(handler);
+        self.client_object
+            .borrow_mut()
+            .as_mut()
+            .expect("client object")
+            .set_position(pos.to_string());
+        self.position.unblock_signal(handler);
+    }
+
+    pub(super) fn set_active(&self, active: bool) {
+        let handler = self.set_state_handler.borrow();
+        let handler = handler.as_ref().expect("signal handler");
+        self.enable_switch.block_signal(handler);
+        self.client_object
+            .borrow_mut()
+            .as_mut()
+            .expect("client object")
+            .set_active(active);
+        self.enable_switch.unblock_signal(handler);
+    }
+
+    pub(super) fn set_dns_state(&self, resolved: bool) {
+        if resolved {
+            self.dns_button.set_css_classes(&["success"])
+        } else {
+            self.dns_button.set_css_classes(&["warning"])
+        }
+    }
 }
 
 impl WidgetImpl for ClientRow {}

lan-mouse-gtk/src/lib.rs

@@ -9,12 +9,10 @@ use std::{env, process, str};
 
 use window::Window;
 
-use lan_mouse_ipc::{FrontendEvent, FrontendRequest};
+use lan_mouse_ipc::FrontendEvent;
 
 use adw::Application;
-use gtk::{
-    gdk::Display, glib::clone, prelude::*, subclass::prelude::ObjectSubclassIsExt, IconTheme,
-};
+use gtk::{gdk::Display, glib::clone, prelude::*, IconTheme};
 use gtk::{gio, glib, prelude::ApplicationExt};
 
 use self::client_object::ClientObject;
@@ -127,54 +125,28 @@ fn build_ui(app: &Application) {
             loop {
                 let notify = receiver.recv().await.unwrap_or_else(|_| process::exit(1));
                 match notify {
-                    FrontendEvent::Changed(handle) => {
-                        window.request(FrontendRequest::GetState(handle));
-                    }
                     FrontendEvent::Created(handle, client, state) => {
-                        window.new_client(handle, client, state);
-                    }
-                    FrontendEvent::Deleted(client) => {
-                        window.delete_client(client);
+                        window.new_client(handle, client, state)
                     }
+                    FrontendEvent::Deleted(client) => window.delete_client(client),
                     FrontendEvent::State(handle, config, state) => {
                         window.update_client_config(handle, config);
                         window.update_client_state(handle, state);
                     }
                     FrontendEvent::NoSuchClient(_) => {}
-                    FrontendEvent::Error(e) => {
-                        window.show_toast(e.as_str());
+                    FrontendEvent::Error(e) => window.show_toast(e.as_str()),
+                    FrontendEvent::Enumerate(clients) => window.update_client_list(clients),
+                    FrontendEvent::PortChanged(port, msg) => window.update_port(port, msg),
+                    FrontendEvent::CaptureStatus(s) => window.set_capture(s.into()),
+                    FrontendEvent::EmulationStatus(s) => window.set_emulation(s.into()),
+                    FrontendEvent::AuthorizedUpdated(keys) => window.set_authorized_keys(keys),
+                    FrontendEvent::PublicKeyFingerprint(fp) => window.set_pk_fp(&fp),
+                    FrontendEvent::IncomingConnected(_fingerprint, addr, pos) => {
+                        window.show_toast(format!("device connected: {addr} ({pos})").as_str());
                     }
-                    FrontendEvent::Enumerate(clients) => {
-                        for (handle, client, state) in clients {
-                            if window.client_idx(handle).is_some() {
-                                window.update_client_config(handle, client);
-                                window.update_client_state(handle, state);
-                            } else {
-                                window.new_client(handle, client, state);
-                            }
-                        }
+                    FrontendEvent::IncomingDisconnected(addr) => {
+                        window.show_toast(format!("{addr} disconnected").as_str());
                     }
-                    FrontendEvent::PortChanged(port, msg) => {
-                        match msg {
-                            None => window.show_toast(format!("port changed: {port}").as_str()),
-                            Some(msg) => window.show_toast(msg.as_str()),
-                        }
-                        window.imp().set_port(port);
-                    }
-                    FrontendEvent::CaptureStatus(s) => {
-                        window.set_capture(s.into());
-                    }
-                    FrontendEvent::EmulationStatus(s) => {
-                        window.set_emulation(s.into());
-                    }
-                    FrontendEvent::AuthorizedUpdated(keys) => {
-                        window.set_authorized_keys(keys);
-                    }
-                    FrontendEvent::PublicKeyFingerprint(fp) => {
-                        window.set_pk_fp(&fp);
-                    }
-                    FrontendEvent::IncomingConnected(..) => {}
-                    FrontendEvent::IncomingDisconnected(..) => {}
                 }
             }
         }

lan-mouse-gtk/src/window.rs

@@ -8,7 +8,7 @@ use glib::{clone, Object};
 use gtk::{
     gio,
     glib::{self, closure_local},
-    ListBox, NoSelection,
+    NoSelection,
 };
 
 use lan_mouse_ipc::{
@@ -28,7 +28,7 @@ glib::wrapper! {
 }
 
 impl Window {
-    pub(crate) fn new(app: &adw::Application, conn: FrontendRequestWriter) -> Self {
+    pub(super) fn new(app: &adw::Application, conn: FrontendRequestWriter) -> Self {
         let window: Self = Object::builder().property("application", app).build();
         window
             .imp()
@@ -38,7 +38,7 @@ impl Window {
         window
     }
 
-    pub fn clients(&self) -> gio::ListStore {
+    fn clients(&self) -> gio::ListStore {
         self.imp()
             .clients
             .borrow()
@@ -46,7 +46,7 @@ impl Window {
             .expect("Could not get clients")
     }
 
-    pub fn authorized(&self) -> gio::ListStore {
+    fn authorized(&self) -> gio::ListStore {
         self.imp()
             .authorized
             .borrow()
@@ -62,6 +62,14 @@ impl Window {
         self.authorized().item(idx).map(|o| o.downcast().unwrap())
     }
 
+    fn row_by_idx(&self, idx: i32) -> Option<ClientRow> {
+        self.imp()
+            .client_list
+            .get()
+            .row_at_index(idx)
+            .map(|o| o.downcast().expect("expected ClientRow"))
+    }
+
     fn setup_authorized(&self) {
         let store = gio::ListStore::new::<KeyObject>();
         self.imp().authorized.replace(Some(store));
@@ -112,16 +120,57 @@ impl Window {
                         .expect("Expected object of type `ClientObject`.");
                     let row = window.create_client_row(client_object);
                     row.connect_closure(
-                        "request-update",
+                        "request-hostname-change",
+                        false,
+                        closure_local!(
+                            #[strong]
+                            window,
+                            move |row: ClientRow, hostname: String| {
+                                log::info!("request-hostname-change");
+                                if let Some(client) = window.client_by_idx(row.index() as u32) {
+                                    let hostname = Some(hostname).filter(|s| !s.is_empty());
+                                    /* changed in response to FrontendEvent
+                                     * -> do not request additional update */
+                                    window.request(FrontendRequest::UpdateHostname(
+                                        client.handle(),
+                                        hostname,
+                                    ));
+                                }
+                            }
+                        ),
+                    );
+                    row.connect_closure(
+                        "request-port-change",
+                        false,
+                        closure_local!(
+                            #[strong]
+                            window,
+                            move |row: ClientRow, port: u32| {
+                                if let Some(client) = window.client_by_idx(row.index() as u32) {
+                                    window.request(FrontendRequest::UpdatePort(
+                                        client.handle(),
+                                        port as u16,
+                                    ));
+                                }
+                            }
+                        ),
+                    );
+                    row.connect_closure(
+                        "request-activate",
                         false,
                         closure_local!(
                             #[strong]
                             window,
                             move |row: ClientRow, active: bool| {
                                 if let Some(client) = window.client_by_idx(row.index() as u32) {
-                                    window.request_client_activate(&client, active);
-                                    window.request_client_update(&client);
-                                    window.request_client_state(&client);
+                                    log::info!(
+                                        "request: {} client",
+                                        if active { "activating" } else { "deactivating" }
+                                    );
+                                    window.request(FrontendRequest::Activate(
+                                        client.handle(),
+                                        active,
+                                    ));
                                 }
                             }
                         ),
@@ -134,7 +183,7 @@ impl Window {
                             window,
                             move |row: ClientRow| {
                                 if let Some(client) = window.client_by_idx(row.index() as u32) {
-                                    window.request_client_delete(&client);
+                                    window.request(FrontendRequest::Delete(client.handle()));
                                 }
                             }
                         ),
@@ -147,9 +196,31 @@ impl Window {
                             window,
                             move |row: ClientRow| {
                                 if let Some(client) = window.client_by_idx(row.index() as u32) {
-                                    window.request_client_update(&client);
-                                    window.request_dns(&client);
-                                    window.request_client_state(&client);
+                                    window.request(FrontendRequest::ResolveDns(
+                                        client.get_data().handle,
+                                    ));
+                                }
+                            }
+                        ),
+                    );
+                    row.connect_closure(
+                        "request-position-change",
+                        false,
+                        closure_local!(
+                            #[strong]
+                            window,
+                            move |row: ClientRow, pos_idx: u32| {
+                                if let Some(client) = window.client_by_idx(row.index() as u32) {
+                                    let position = match pos_idx {
+                                        0 => Position::Left,
+                                        1 => Position::Right,
+                                        2 => Position::Top,
+                                        _ => Position::Bottom,
+                                    };
+                                    window.request(FrontendRequest::UpdatePosition(
+                                        client.handle(),
+                                        position,
+                                    ));
                                 }
                             }
                         ),
@@ -160,10 +231,14 @@ impl Window {
         );
     }
 
+    fn setup_icon(&self) {
+        self.set_icon_name(Some("de.feschber.LanMouse"));
+    }
+
     /// workaround for a bug in libadwaita that shows an ugly line beneath
     /// the last element if a placeholder is set.
     /// https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/6308
-    pub fn update_placeholder_visibility(&self) {
+    fn update_placeholder_visibility(&self) {
         let visible = self.clients().n_items() == 0;
         let placeholder = self.imp().client_placeholder.get();
         self.imp().client_list.set_placeholder(match visible {
@@ -172,7 +247,7 @@ impl Window {
         });
     }
 
-    pub fn update_auth_placeholder_visibility(&self) {
+    fn update_auth_placeholder_visibility(&self) {
         let visible = self.authorized().n_items() == 0;
         let placeholder = self.imp().authorized_placeholder.get();
         self.imp().authorized_list.set_placeholder(match visible {
@@ -181,10 +256,6 @@ impl Window {
         });
     }
 
-    fn setup_icon(&self) {
-        self.set_icon_name(Some("de.feschber.LanMouse"));
-    }
-
     fn create_client_row(&self, client_object: &ClientObject) -> ClientRow {
         let row = ClientRow::new(client_object);
         row.bind(client_object);
@@ -197,24 +268,46 @@ impl Window {
         row
     }
 
-    pub fn new_client(&self, handle: ClientHandle, client: ClientConfig, state: ClientState) {
+    pub(super) fn new_client(
+        &self,
+        handle: ClientHandle,
+        client: ClientConfig,
+        state: ClientState,
+    ) {
         let client = ClientObject::new(handle, client, state.clone());
         self.clients().append(&client);
         self.update_placeholder_visibility();
         self.update_dns_state(handle, !state.ips.is_empty());
     }
 
-    pub fn client_idx(&self, handle: ClientHandle) -> Option<usize> {
-        self.clients().iter::<ClientObject>().position(|c| {
-            if let Ok(c) = c {
-                c.handle() == handle
+    pub(super) fn update_client_list(
+        &self,
+        clients: Vec<(ClientHandle, ClientConfig, ClientState)>,
+    ) {
+        for (handle, client, state) in clients {
+            if self.client_idx(handle).is_some() {
+                self.update_client_config(handle, client);
+                self.update_client_state(handle, state);
             } else {
-                false
+                self.new_client(handle, client, state);
             }
-        })
+        }
     }
 
-    pub fn delete_client(&self, handle: ClientHandle) {
+    pub(super) fn update_port(&self, port: u16, msg: Option<String>) {
+        if let Some(msg) = msg {
+            self.show_toast(msg.as_str());
+        }
+        self.imp().set_port(port);
+    }
+
+    fn client_idx(&self, handle: ClientHandle) -> Option<usize> {
+        self.clients()
+            .iter::<ClientObject>()
+            .position(|c| c.ok().map(|c| c.handle() == handle).unwrap_or_default())
+    }
+
+    pub(super) fn delete_client(&self, handle: ClientHandle) {
         let Some(idx) = self.client_idx(handle) else {
             log::warn!("could not find client with handle {handle}");
             return;
@@ -226,46 +319,31 @@ impl Window {
         }
     }
 
-    pub fn update_client_config(&self, handle: ClientHandle, client: ClientConfig) {
-        let Some(idx) = self.client_idx(handle) else {
-            log::warn!("could not find client with handle {}", handle);
+    pub(super) fn update_client_config(&self, handle: ClientHandle, client: ClientConfig) {
+        let Some(row) = self.row_for_handle(handle) else {
+            log::warn!("could not find row for handle {}", handle);
             return;
         };
-        let client_object = self.clients().item(idx as u32).unwrap();
-        let client_object: &ClientObject = client_object.downcast_ref().unwrap();
-        let data = client_object.get_data();
-
-        /* only change if it actually has changed, otherwise
-         * the update signal is triggered */
-        if data.hostname != client.hostname {
-            client_object.set_hostname(client.hostname.unwrap_or("".into()));
-        }
-        if data.port != client.port as u32 {
-            client_object.set_port(client.port as u32);
-        }
-        if data.position != client.pos.to_string() {
-            client_object.set_position(client.pos.to_string());
-        }
+        row.set_hostname(client.hostname);
+        row.set_port(client.port);
+        row.set_position(client.pos);
     }
 
-    pub fn update_client_state(&self, handle: ClientHandle, state: ClientState) {
-        let Some(idx) = self.client_idx(handle) else {
-            log::warn!("could not find client with handle {}", handle);
+    pub(super) fn update_client_state(&self, handle: ClientHandle, state: ClientState) {
+        let Some(row) = self.row_for_handle(handle) else {
+            log::warn!("could not find row for handle {}", handle);
+            return;
+        };
+        let Some(client_object) = self.client_object_for_handle(handle) else {
+            log::warn!("could not find row for handle {}", handle);
             return;
         };
-        let client_object = self.clients().item(idx as u32).unwrap();
-        let client_object: &ClientObject = client_object.downcast_ref().unwrap();
-        let data = client_object.get_data();
 
-        if state.active != data.active {
-            client_object.set_active(state.active);
-            log::debug!("set active to {}", state.active);
-        }
+        /* activation state */
+        row.set_active(state.active);
 
-        if state.resolving != data.resolving {
-            client_object.set_resolving(state.resolving);
-            log::debug!("resolving {}: {}", data.handle, state.resolving);
-        }
+        /* dns state */
+        client_object.set_resolving(state.resolving);
 
         self.update_dns_state(handle, !state.ips.is_empty());
         let ips = state
@@ -276,22 +354,23 @@ impl Window {
         client_object.set_ips(ips);
     }
 
-    pub fn update_dns_state(&self, handle: ClientHandle, resolved: bool) {
-        let Some(idx) = self.client_idx(handle) else {
-            log::warn!("could not find client with handle {}", handle);
-            return;
-        };
-        let list_box: ListBox = self.imp().client_list.get();
-        let row = list_box.row_at_index(idx as i32).unwrap();
-        let client_row: ClientRow = row.downcast().expect("expected ClientRow Object");
-        if resolved {
-            client_row.imp().dns_button.set_css_classes(&["success"])
-        } else {
-            client_row.imp().dns_button.set_css_classes(&["warning"])
+    fn client_object_for_handle(&self, handle: ClientHandle) -> Option<ClientObject> {
+        self.client_idx(handle)
+            .and_then(|i| self.client_by_idx(i as u32))
+    }
+
+    fn row_for_handle(&self, handle: ClientHandle) -> Option<ClientRow> {
+        self.client_idx(handle)
+            .and_then(|i| self.row_by_idx(i as i32))
+    }
+
+    fn update_dns_state(&self, handle: ClientHandle, resolved: bool) {
+        if let Some(client_row) = self.row_for_handle(handle) {
+            client_row.set_dns_state(resolved);
         }
     }
 
-    pub fn request_port_change(&self) {
+    fn request_port_change(&self) {
         let port = self
             .imp()
             .port_entry
@@ -303,55 +382,19 @@ impl Window {
         self.request(FrontendRequest::ChangePort(port));
     }
 
-    pub fn request_capture(&self) {
+    fn request_capture(&self) {
         self.request(FrontendRequest::EnableCapture);
     }
 
-    pub fn request_emulation(&self) {
+    fn request_emulation(&self) {
         self.request(FrontendRequest::EnableEmulation);
     }
 
-    pub fn request_client_state(&self, client: &ClientObject) {
-        self.request_client_state_for(client.handle());
-    }
-
-    pub fn request_client_state_for(&self, handle: ClientHandle) {
-        self.request(FrontendRequest::GetState(handle));
-    }
-
-    pub fn request_client_create(&self) {
+    fn request_client_create(&self) {
         self.request(FrontendRequest::Create);
     }
 
-    pub fn request_dns(&self, client: &ClientObject) {
-        self.request(FrontendRequest::ResolveDns(client.get_data().handle));
-    }
-
-    pub fn request_client_update(&self, client: &ClientObject) {
-        let handle = client.handle();
-        let data = client.get_data();
-        let position = Position::try_from(data.position.as_str()).expect("invalid position");
-        let hostname = data.hostname;
-        let port = data.port as u16;
-
-        for event in [
-            FrontendRequest::UpdateHostname(handle, hostname),
-            FrontendRequest::UpdatePosition(handle, position),
-            FrontendRequest::UpdatePort(handle, port),
-        ] {
-            self.request(event);
-        }
-    }
-
-    pub fn request_client_activate(&self, client: &ClientObject, active: bool) {
-        self.request(FrontendRequest::Activate(client.handle(), active));
-    }
-
-    pub fn request_client_delete(&self, client: &ClientObject) {
-        self.request(FrontendRequest::Delete(client.handle()));
-    }
-
-    pub fn open_fingerprint_dialog(&self) {
+    fn open_fingerprint_dialog(&self) {
         let window = FingerprintWindow::new();
         window.set_transient_for(Some(self));
         window.connect_closure(
@@ -369,15 +412,15 @@ impl Window {
         window.present();
     }
 
-    pub fn request_fingerprint_add(&self, desc: String, fp: String) {
+    fn request_fingerprint_add(&self, desc: String, fp: String) {
         self.request(FrontendRequest::AuthorizeKey(desc, fp));
     }
 
-    pub fn request_fingerprint_remove(&self, fp: String) {
+    fn request_fingerprint_remove(&self, fp: String) {
         self.request(FrontendRequest::RemoveAuthorizedKey(fp));
     }
 
-    pub fn request(&self, request: FrontendRequest) {
+    fn request(&self, request: FrontendRequest) {
         let mut requester = self.imp().frontend_request_writer.borrow_mut();
         let requester = requester.as_mut().unwrap();
         if let Err(e) = requester.request(request) {
@@ -385,18 +428,18 @@ impl Window {
         };
     }
 
-    pub fn show_toast(&self, msg: &str) {
+    pub(super) fn show_toast(&self, msg: &str) {
         let toast = adw::Toast::new(msg);
         let toast_overlay = &self.imp().toast_overlay;
         toast_overlay.add_toast(toast);
     }
 
-    pub fn set_capture(&self, active: bool) {
+    pub(super) fn set_capture(&self, active: bool) {
         self.imp().capture_active.replace(active);
         self.update_capture_emulation_status();
     }
 
-    pub fn set_emulation(&self, active: bool) {
+    pub(super) fn set_emulation(&self, active: bool) {
         self.imp().emulation_active.replace(active);
         self.update_capture_emulation_status();
     }
@@ -411,7 +454,7 @@ impl Window {
             .set_visible(!capture || !emulation);
     }
 
-    pub(crate) fn set_authorized_keys(&self, fingerprints: HashMap<String, String>) {
+    pub(super) fn set_authorized_keys(&self, fingerprints: HashMap<String, String>) {
         let authorized = self.authorized();
         // clear list
         authorized.remove_all();
@@ -423,7 +466,7 @@ impl Window {
         self.update_auth_placeholder_visibility();
     }
 
-    pub(crate) fn set_pk_fp(&self, fingerprint: &str) {
+    pub(super) fn set_pk_fp(&self, fingerprint: &str) {
         self.imp().fingerprint_row.set_subtitle(fingerprint);
     }
 }

lan-mouse-ipc/src/lib.rs

@@ -177,8 +177,6 @@ pub struct ClientState {
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum FrontendEvent {
-    /// client state has changed, new state must be requested via [`FrontendRequest::GetState`]
-    Changed(ClientHandle),
     /// a client was created
     Created(ClientHandle, ClientConfig, ClientState),
     /// no such client
@@ -229,8 +227,6 @@ pub enum FrontendRequest {
     UpdatePosition(ClientHandle, Position),
     /// update fix-ips
     UpdateFixIps(ClientHandle, Vec<IpAddr>),
-    /// request the state of the given client
-    GetState(ClientHandle),
     /// request reenabling input capture
     EnableCapture,
     /// request reenabling input emulation

src/config.rs

@@ -38,7 +38,6 @@ pub struct ConfigToml {
 
 #[derive(Serialize, Deserialize, Debug, Eq, PartialEq)]
 pub struct TomlClient {
-    pub capture_backend: Option<CaptureBackend>,
     pub hostname: Option<String>,
     pub host_name: Option<String>,
     pub ips: Option<Vec<IpAddr>>,

src/service.rs

@@ -186,7 +186,6 @@ impl Service {
             FrontendRequest::EnableCapture => self.capture.reenable(),
             FrontendRequest::EnableEmulation => self.emulation.reenable(),
             FrontendRequest::Enumerate() => self.enumerate(),
-            FrontendRequest::GetState(handle) => self.broadcast_client(handle),
             FrontendRequest::UpdateFixIps(handle, fix_ips) => self.update_fix_ips(handle, fix_ips),
             FrontendRequest::UpdateHostname(handle, host) => self.update_hostname(handle, host),
             FrontendRequest::UpdatePort(handle, port) => self.update_port(handle, port),
@@ -283,7 +282,7 @@ impl Service {
                 handle
             }
         };
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn resolve(&self, handle: ClientHandle) {
@@ -399,7 +398,7 @@ impl Service {
         log::debug!("deactivating client {handle}");
         if self.client_manager.deactivate_client(handle) {
             self.capture.destroy(handle);
-            self.notify_frontend(FrontendEvent::Changed(handle));
+            self.broadcast_client(handle);
             log::info!("deactivated client {handle}");
         }
     }
@@ -425,7 +424,7 @@ impl Service {
         if self.client_manager.activate_client(handle) {
             /* notify capture and frontends */
             self.capture.create(handle, pos, CaptureType::Default);
-            self.notify_frontend(FrontendEvent::Changed(handle));
+            self.broadcast_client(handle);
             log::info!("activated client {handle} ({pos})");
         }
     }
@@ -452,19 +451,20 @@ impl Service {
 
     fn update_fix_ips(&mut self, handle: ClientHandle, fix_ips: Vec<IpAddr>) {
         self.client_manager.set_fix_ips(handle, fix_ips);
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn update_hostname(&mut self, handle: ClientHandle, hostname: Option<String>) {
+        log::info!("hostname changed: {hostname:?}");
         if self.client_manager.set_hostname(handle, hostname.clone()) {
             self.resolve(handle);
         }
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn update_port(&mut self, handle: ClientHandle, port: u16) {
         self.client_manager.set_port(handle, port);
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn update_pos(&mut self, handle: ClientHandle, pos: Position) {
@@ -473,7 +473,7 @@ impl Service {
             self.deactivate_client(handle);
             self.activate_client(handle);
         }
-        self.notify_frontend(FrontendEvent::Changed(handle));
+        self.broadcast_client(handle);
     }
 
     fn broadcast_client(&mut self, handle: ClientHandle) {