Add switch-workspace subcommand

README.md

@@ -5,9 +5,11 @@ creations, deletions, and focus changes using sway's JSON IPC interface.  The
 client `swayr` offers subcommands, see `swayr --help`.
 
 Right now, there are these subcommands:
-* `switch-window`: a wofi-based window switcher sorting the windows in the
-  order urgent first, then LRU, focused last.
-* `quit-window`: displays all windows using wofi and quits the selected one.
+* `switch-window` displays all windows in the order urgent first, then LRU,
+  focused last and focuses the selected.
+* `quit-window` displays all windows and quits the selected one.
+* `switch-workspace` displays all workspaces in LRU order and switches to the
+  selected.
 
 Swayr is licensed under the
 [GPLv3](https://www.gnu.org/licenses/gpl-3.0.en.html) (or later).

src/bin/swayr.rs

@@ -22,6 +22,8 @@ enum SwayrCommand {
     SwitchWindow,
     /// Quit a window with display order focused first, then reverse-LRU order, urgent last
     QuitWindow,
+    /// Switch workspace with LRU display order
+    SwitchWorkspace,
 }
 
 fn main() {
@@ -29,5 +31,6 @@ fn main() {
     match opts.command {
         SwayrCommand::SwitchWindow => client::switch_window(),
         SwayrCommand::QuitWindow => client::quit_window(),
+        SwayrCommand::SwitchWorkspace => client::switch_workspace(),
     }
 }

src/bin/swayrd.rs

@@ -9,15 +9,15 @@ use swayr::demon;
 use swayr::ipc;
 
 fn main() {
-    let win_props: Arc<RwLock<HashMap<ipc::Id, ipc::WindowProps>>> =
+    let con_props: Arc<RwLock<HashMap<ipc::Id, ipc::ConProps>>> =
         Arc::new(RwLock::new(HashMap::new()));
-    let win_props_for_ev_handler = win_props.clone();
+    let con_props_for_ev_handler = con_props.clone();
 
     let subscriber_handle = thread::spawn(move || {
-        demon::monitor_window_events(win_props_for_ev_handler)
+        demon::monitor_window_events(con_props_for_ev_handler)
     });
 
-    match demon::serve_client_requests(win_props) {
+    match demon::serve_client_requests(con_props) {
         Ok(()) => {
             let subscriber_result = subscriber_handle.join();
             match subscriber_result {

src/client.rs

@@ -1,10 +1,9 @@
 use crate::con;
-use crate::ipc;
 use crate::util;
 
 pub fn switch_window() {
-    let root_node = get_tree();
-    let mut windows = con::get_windows(&root_node);
+    let root = con::get_tree();
+    let mut windows = con::get_windows(&root);
     windows.sort();
 
     if let Some(window) = con::select_window("Switch to window", &windows) {
@@ -15,9 +14,21 @@ pub fn switch_window() {
     }
 }
 
+pub fn switch_workspace() {
+    let root = con::get_tree();
+    let mut workspaces = con::get_workspaces(&root, false);
+    workspaces.sort();
+
+    if let Some(workspace) =
+        con::select_workspace("Switch to workspace", &workspaces)
+    {
+        util::swaymsg(vec!["workspace", "number", workspace.get_name()]);
+    }
+}
+
 pub fn quit_window() {
-    let root_node = get_tree();
-    let mut windows = con::get_windows(&root_node);
+    let root = con::get_tree();
+    let mut windows = con::get_windows(&root);
     windows.sort_by(|a, b| a.cmp(b).reverse());
 
     if let Some(window) = con::select_window("Quit window", &windows) {
@@ -27,38 +38,3 @@ pub fn quit_window() {
         ]);
     }
 }
-
-fn get_tree() -> ipc::Node {
-    let output = util::swaymsg(vec!["-t", "get_tree"]);
-    let result = serde_json::from_str(output.as_str());
-
-    match result {
-        Ok(node) => node,
-        Err(e) => {
-            eprintln!("Error: {}", e);
-            panic!()
-        }
-    }
-}
-
-#[test]
-fn test_get_tree() {
-    let tree = get_tree();
-
-    println!("Those IDs are in get_tree():");
-    for n in tree.iter() {
-        println!("  id: {}, type: {:?}", n.id, n.r#type);
-    }
-}
-
-#[test]
-fn test_get_windows() {
-    let tree = get_tree();
-    let cons = con::get_windows(&tree);
-
-    println!("There are {} cons.", cons.len());
-
-    for c in cons {
-        println!("  {}", c);
-    }
-}

src/con.rs

@@ -5,16 +5,39 @@ use std::collections::HashMap;
 use std::fmt;
 use std::os::unix::net::UnixStream;
 
+pub fn get_tree() -> ipc::Node {
+    let output = util::swaymsg(vec!["-t", "get_tree"]);
+    let result = serde_json::from_str(output.as_str());
+
+    match result {
+        Ok(node) => node,
+        Err(e) => {
+            eprintln!("Error: {}", e);
+            panic!()
+        }
+    }
+}
+
+#[test]
+fn test_get_tree() {
+    let tree = get_tree();
+
+    println!("Those IDs are in get_tree():");
+    for n in tree.iter() {
+        println!("  id: {}, type: {:?}", n.id, n.r#type);
+    }
+}
+
 #[derive(Debug)]
 pub struct Window<'a> {
     node: &'a ipc::Node,
     workspace: &'a ipc::Node,
-    win_props: Option<ipc::WindowProps>,
+    con_props: Option<ipc::ConProps>,
 }
 
 impl Window<'_> {
-    pub fn get_id(&self) -> ipc::Id {
-        self.node.id
+    pub fn get_id(&self) -> &ipc::Id {
+        &self.node.id
     }
 
     pub fn get_app_name(&self) -> &str {
@@ -38,7 +61,7 @@ impl Window<'_> {
 }
 
 impl PartialEq for Window<'_> {
-    fn eq(&self, other: &Window) -> bool {
+    fn eq(&self, other: &Self) -> bool {
         self.get_id() == other.get_id()
     }
 }
@@ -59,9 +82,9 @@ impl Ord for Window<'_> {
             std::cmp::Ordering::Greater
         } else {
             let lru_a =
-                self.win_props.as_ref().map_or(0, |wp| wp.last_focus_time);
+                self.con_props.as_ref().map_or(0, |wp| wp.last_focus_time);
             let lru_b =
-                other.win_props.as_ref().map_or(0, |wp| wp.last_focus_time);
+                other.con_props.as_ref().map_or(0, |wp| wp.last_focus_time);
             lru_a.cmp(&lru_b).reverse()
         }
     }
@@ -95,15 +118,15 @@ impl<'a> fmt::Display for Window<'a> {
 }
 
 fn build_windows(
-    tree: &ipc::Node,
-    mut win_props: HashMap<ipc::Id, ipc::WindowProps>,
+    root: &ipc::Node,
+    mut con_props: HashMap<ipc::Id, ipc::ConProps>,
 ) -> Vec<Window> {
     let mut v = vec![];
-    for workspace in tree.workspaces() {
+    for workspace in root.workspaces() {
         for n in workspace.windows() {
             v.push(Window {
                 node: &n,
-                win_props: win_props.remove(&n.id),
+                con_props: con_props.remove(&n.id),
                 workspace: &workspace,
             })
         }
@@ -111,8 +134,37 @@ fn build_windows(
     v
 }
 
-fn get_window_props(
-) -> Result<HashMap<ipc::Id, ipc::WindowProps>, serde_json::Error> {
+fn build_workspaces(
+    root: &ipc::Node,
+    mut con_props: HashMap<ipc::Id, ipc::ConProps>,
+    include_scratchpad: bool,
+) -> Vec<Workspace> {
+    let mut v = vec![];
+    for workspace in root.workspaces() {
+        if !include_scratchpad
+            && workspace.name.as_ref().unwrap().eq("__i3_scratch")
+        {
+            continue;
+        }
+        v.push(Workspace {
+            node: &workspace,
+            con_props: con_props.remove(&workspace.id),
+            windows: workspace
+                .windows()
+                .iter()
+                .map(|w| Window {
+                    node: &w,
+                    con_props: con_props.remove(&w.id),
+                    workspace: &workspace,
+                })
+                .collect(),
+        })
+    }
+    v
+}
+
+fn get_con_props() -> Result<HashMap<ipc::Id, ipc::ConProps>, serde_json::Error>
+{
     if let Ok(sock) = UnixStream::connect(util::get_swayr_socket_path()) {
         serde_json::from_reader(sock)
     } else {
@@ -121,16 +173,44 @@ fn get_window_props(
 }
 
 /// Gets all application windows of the tree.
-pub fn get_windows(root_node: &ipc::Node) -> Vec<Window> {
-    let win_props = match get_window_props() {
-        Ok(win_props) => Some(win_props),
+pub fn get_windows(root: &ipc::Node) -> Vec<Window> {
+    let con_props = match get_con_props() {
+        Ok(con_props) => Some(con_props),
+        Err(e) => {
+            eprintln!("Got no con_props: {:?}", e);
+            None
+        }
+    };
+
+    build_windows(root, con_props.unwrap_or_default())
+}
+
+/// Gets all application windows of the tree.
+pub fn get_workspaces(
+    root: &ipc::Node,
+    include_scratchpad: bool,
+) -> Vec<Workspace> {
+    let con_props = match get_con_props() {
+        Ok(con_props) => Some(con_props),
         Err(e) => {
-            eprintln!("Got no win_props: {:?}", e);
+            eprintln!("Got no con_props: {:?}", e);
             None
         }
     };
 
-    build_windows(&root_node, win_props.unwrap_or_default())
+    build_workspaces(root, con_props.unwrap_or_default(), include_scratchpad)
+}
+
+#[test]
+fn test_get_windows() {
+    let root = get_tree();
+    let cons = get_windows(&root);
+
+    println!("There are {} cons.", cons.len());
+
+    for c in cons {
+        println!("  {}", c);
+    }
 }
 
 pub fn select_window<'a>(
@@ -139,3 +219,66 @@ pub fn select_window<'a>(
 ) -> Option<&'a Window<'a>> {
     util::wofi_select(prompt, windows)
 }
+
+pub fn select_workspace<'a>(
+    prompt: &'a str,
+    workspaces: &'a [Workspace],
+) -> Option<&'a Workspace<'a>> {
+    util::wofi_select(prompt, workspaces)
+}
+
+pub struct Workspace<'a> {
+    node: &'a ipc::Node,
+    con_props: Option<ipc::ConProps>,
+    windows: Vec<Window<'a>>,
+}
+
+impl Workspace<'_> {
+    pub fn get_name(&self) -> &str {
+        self.node.name.as_ref().unwrap()
+    }
+
+    pub fn get_id(&self) -> &ipc::Id {
+        &self.node.id
+    }
+}
+
+impl PartialEq for Workspace<'_> {
+    fn eq(&self, other: &Self) -> bool {
+        self.get_id() == other.get_id()
+    }
+}
+
+impl Eq for Workspace<'_> {}
+
+impl Ord for Workspace<'_> {
+    fn cmp(&self, other: &Self) -> cmp::Ordering {
+        if self == other {
+            cmp::Ordering::Equal
+        } else {
+            let lru_a =
+                self.con_props.as_ref().map_or(0, |wp| wp.last_focus_time);
+            let lru_b =
+                other.con_props.as_ref().map_or(0, |wp| wp.last_focus_time);
+            lru_a.cmp(&lru_b).reverse()
+        }
+    }
+}
+
+impl PartialOrd for Workspace<'_> {
+    fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl<'a> fmt::Display for Workspace<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+        write!(
+            f,
+            "<span font_weight=\"bold\">“Workspace {}”</span>   \
+             <span alpha=\"20000\">id {}</span>", // Almost hide ID!
+            self.get_name(),
+            self.get_id()
+        )
+    }
+}

src/demon.rs

@@ -11,50 +11,86 @@ use std::thread;
 use std::time::{SystemTime, UNIX_EPOCH};
 
 pub fn monitor_window_events(
-    win_props: Arc<RwLock<HashMap<ipc::Id, ipc::WindowProps>>>,
+    con_props: Arc<RwLock<HashMap<ipc::Id, ipc::ConProps>>>,
 ) {
     let child = proc::Command::new("swaymsg")
         .arg("--monitor")
         .arg("--raw")
         .arg("-t")
         .arg("subscribe")
-        .arg("[\"window\"]")
+        .arg("[\"window\", \"workspace\"]")
         .stdout(proc::Stdio::piped())
         .spawn()
         .expect("Failed to subscribe to window events");
     let stdout: std::process::ChildStdout = child.stdout.unwrap();
-    let stream =
-        Deserializer::from_reader(stdout).into_iter::<ipc::WindowEvent>();
+    let stream = Deserializer::from_reader(stdout).into_iter::<ipc::ConEvent>();
     for res in stream {
         match res {
-            Ok(win_ev) => handle_window_event(win_ev, win_props.clone()),
+            Ok(win_ev) => handle_con_event(win_ev, con_props.clone()),
             Err(err) => eprintln!("Error handling window event:\n{:?}", err),
         }
     }
 }
 
-fn handle_window_event(
-    ev: ipc::WindowEvent,
-    win_props: Arc<RwLock<HashMap<ipc::Id, ipc::WindowProps>>>,
+fn update_last_focus_time(
+    id: ipc::Id,
+    con_props: Arc<RwLock<HashMap<ipc::Id, ipc::ConProps>>>,
 ) {
-    match ev.change {
-        ipc::WindowEventType::Focus => {
-            let mut write_lock = win_props.write().unwrap();
-            if let Some(mut wp) = write_lock.get_mut(&ev.container.id) {
+    let mut write_lock = con_props.write().unwrap();
+    if let Some(mut wp) = write_lock.get_mut(&id) {
         wp.last_focus_time = get_epoch_time_as_millis();
     } else {
         write_lock.insert(
-                    ev.container.id,
-                    ipc::WindowProps {
+            id,
+            ipc::ConProps {
                 last_focus_time: get_epoch_time_as_millis(),
             },
         );
     }
+}
+
+fn remove_winprops(
+    id: &ipc::Id,
+    con_props: Arc<RwLock<HashMap<ipc::Id, ipc::ConProps>>>,
+) {
+    con_props.write().unwrap().remove(id);
+}
+
+fn handle_con_event(
+    ev: ipc::ConEvent,
+    con_props: Arc<RwLock<HashMap<ipc::Id, ipc::ConProps>>>,
+) {
+    let mut handled = true;
+    let con_props2 = con_props.clone();
+
+    match ev {
+        ipc::ConEvent::WindowEvent { change, container } => match change {
+            ipc::WindowEventType::New | ipc::WindowEventType::Focus => {
+                update_last_focus_time(container.id, con_props)
             }
             ipc::WindowEventType::Close => {
-            win_props.write().unwrap().remove(&ev.container.id);
+                remove_winprops(&container.id, con_props)
             }
-        _ => (),
+            _ => handled = false,
+        },
+        ipc::ConEvent::WorkspaceEvent {
+            change,
+            current,
+            old: _,
+        } => match change {
+            ipc::WorkspaceEventType::Init | ipc::WorkspaceEventType::Focus => {
+                println!("WsEv");
+                update_last_focus_time(current.id, con_props)
+            }
+            ipc::WorkspaceEventType::Empty => {
+                remove_winprops(&current.id, con_props)
+            }
+            _ => handled = false,
+        },
+    }
+
+    if handled {
+        println!("New con_props state:\n{:#?}", *con_props2.read().unwrap());
     }
 }
 
@@ -66,7 +102,7 @@ fn get_epoch_time_as_millis() -> u128 {
 }
 
 pub fn serve_client_requests(
-    win_props: Arc<RwLock<HashMap<ipc::Id, ipc::WindowProps>>>,
+    con_props: Arc<RwLock<HashMap<ipc::Id, ipc::ConProps>>>,
 ) -> std::io::Result<()> {
     match std::fs::remove_file(util::get_swayr_socket_path()) {
         Ok(()) => println!("Deleted stale socket from previous run."),
@@ -77,7 +113,7 @@ pub fn serve_client_requests(
     for stream in listener.incoming() {
         match stream {
             Ok(stream) => {
-                let wp_clone = win_props.clone();
+                let wp_clone = con_props.clone();
                 thread::spawn(move || handle_client_request(stream, wp_clone));
             }
             Err(err) => return Err(err),
@@ -88,9 +124,9 @@ pub fn serve_client_requests(
 
 fn handle_client_request(
     mut stream: UnixStream,
-    win_props: Arc<RwLock<HashMap<ipc::Id, ipc::WindowProps>>>,
+    con_props: Arc<RwLock<HashMap<ipc::Id, ipc::ConProps>>>,
 ) {
-    let json = serde_json::to_string(&*win_props.read().unwrap()).unwrap();
+    let json = serde_json::to_string(&*con_props.read().unwrap()).unwrap();
     if let Err(err) = stream.write_all(json.as_bytes()) {
         eprintln!("Error writing to client: {:?}", err);
     }

src/ipc.rs

@@ -202,13 +202,40 @@ pub enum WindowEventType {
 
 #[derive(Deserialize, Debug)]
 #[allow(dead_code)]
-pub struct WindowEvent {
-    pub change: WindowEventType,
-    pub container: Node,
+pub enum WorkspaceEventType {
+    #[serde(rename = "init")]
+    Init,
+    #[serde(rename = "empty")]
+    Empty,
+    #[serde(rename = "focus")]
+    Focus,
+    #[serde(rename = "move")]
+    Move,
+    #[serde(rename = "rename")]
+    Rename,
+    #[serde(rename = "urgent")]
+    Urgent,
+    #[serde(rename = "reload")]
+    Reload,
+}
+
+#[derive(Deserialize, Debug)]
+#[serde(untagged)]
+#[allow(dead_code)]
+pub enum ConEvent {
+    WindowEvent {
+        change: WindowEventType,
+        container: Node,
+    },
+    WorkspaceEvent {
+        change: WorkspaceEventType,
+        current: Node,
+        old: Node,
+    },
 }
 
 #[derive(Debug, Deserialize, Serialize)]
-pub struct WindowProps {
+pub struct ConProps {
     /// Milliseconds since UNIX epoch.
     pub last_focus_time: u128,
 }