feat(subscriptions): embed latest state

This commit embeds the latest window manager state (as returned from
'komorebic.exe state') as part of the event notifications sent to
subscribers.

Separately, WindowManager.update_focused_workspace has been refactored
to allow a failure to set the foreground window to the default desktop
window on an empty workspace to log a warning instead of returning an
error, allowing messages previously impacted by this to run to
conclusion and be surfaced in the event notifications stream.

resolve #56

README.md

@@ -465,21 +465,21 @@ First, your application must create a named pipe. Once the named pipe has been c
 komorebic.exe subscribe <your pipe name>
 ```
 
-Note that you do not have to incldue the full path of the named pipe, just the name.
+Note that you do not have to include the full path of the named pipe, just the name.
 
 If the named pipe exists, `komorebi` will start pushing JSON data of successfully handled events and messages:
 
 ```json lines
-{"type":"AddSubscriber","content":"test-pipe"}
+{"event":{"type":"AddSubscriber","content":"yasb"},"state":{...}}
-{"type":"FocusWindow","content":"Up"}
+{"event":{"type":"FocusWindow","content":"Left"},"state":{...}}
-{"type":"FocusChange","content":["SystemForeground",{"hwnd":1443930,"title":"komorebi – README.md","exe":"idea64.exe","class":"SunAwtFrame","rect":{"left":1539,"top":60,"right":1520,"bottom":821}}]}
+{"event":{"type":"FocusChange","content":["SystemForeground",{"hwnd":131444,"title":"komorebi – README.md","exe":"idea64.exe","class":"SunAwtFrame","rect":{"left":13,"top":60,"right":1520,"bottom":1655}}]},"state":{...}}
-{"type":"MonitorPoll","content":["ObjectCreate",{"hwnd":2624200,"title":"OLEChannelWnd","exe":"explorer.exe","class":"OleMainThreadWndClass","rect":{"left":0,"top":0,"right":0,"bottom":0}}]}
+{"event":{"type":"MonitorPoll","content":["ObjectCreate",{"hwnd":5572450,"title":"OLEChannelWnd","exe":"explorer.exe","class":"OleMainThreadWndClass","rect":{"left":0,"top":0,"right":0,"bottom":0}}]},"state":{...}}
-{"type":"FocusWindow","content":"Left"}
+{"event":{"type":"FocusWindow","content":"Right"},"state":{...}}
-{"type":"FocusChange","content":["SystemForeground",{"hwnd":2558668,"title":"Windows PowerShell","exe":"WindowsTerminal.exe","class":"CASCADIA_HOSTING_WINDOW_CLASS","rect":{"left":13,"top":60,"right":1520,"bottom":1655}}]}
+{"event":{"type":"FocusChange","content":["SystemForeground",{"hwnd":132968,"title":"Windows PowerShell","exe":"WindowsTerminal.exe","class":"CASCADIA_HOSTING_WINDOW_CLASS","rect":{"left":1539,"top":60,"right":1520,"bottom":821}}]},"state":{}...}
-{"type":"FocusWindow","content":"Right"}
+{"event":{"type":"FocusWindow","content":"Down"},"state":{...}}
-{"type":"FocusChange","content":["SystemForeground",{"hwnd":1443930,"title":"komorebi – README.md","exe":"idea64.exe","class":"SunAwtFrame","rect":{"left":1539,"top":60,"right":1520,"bottom":821}}]}
+{"event":{"type":"FocusChange","content":["SystemForeground",{"hwnd":329264,"title":"den — Mozilla Firefox","exe":"firefox.exe","class":"MozillaWindowClass","rect":{"left":1539,"top":894,"right":1520,"bottom":821}}]},"state":{...}}
-{"type":"FocusWindow","content":"Down"}
+{"event":{"type":"FocusWindow","content":"Up"},"state":{...}}
-{"type":"FocusChange","content":["SystemForeground",{"hwnd":67344,"title":"Windows PowerShell","exe":"WindowsTerminal.exe","class":"CASCADIA_HOSTING_WINDOW_CLASS","rect":{"left":1539,"top":894,"right":757,"bottom":821}}]}
+{"event":{"type":"FocusChange","content":["SystemForeground",{"hwnd":132968,"title":"Windows PowerShell","exe":"WindowsTerminal.exe","class":"CASCADIA_HOSTING_WINDOW_CLASS","rect":{"left":1539,"top":60,"right":1520,"bottom":821}}]},"state":{...}}
 ```
 
 You may then filter on the `type` key to listen to the events that you are interested in. For a full list of possible

komorebi/src/main.rs

@@ -22,15 +22,19 @@ use lazy_static::lazy_static;
 #[cfg(feature = "deadlock_detection")]
 use parking_lot::deadlock;
 use parking_lot::Mutex;
+use serde::Serialize;
 use sysinfo::SystemExt;
 use tracing_appender::non_blocking::WorkerGuard;
 use tracing_subscriber::layer::SubscriberExt;
 use tracing_subscriber::EnvFilter;
 use which::which;
 
+use komorebi_core::SocketMessage;
+
 use crate::process_command::listen_for_commands;
 use crate::process_event::listen_for_events;
 use crate::process_movement::listen_for_movements;
+use crate::window_manager::State;
 use crate::window_manager::WindowManager;
 use crate::window_manager_event::WindowManagerEvent;
 use crate::windows_api::WindowsApi;
@@ -186,6 +190,19 @@ pub fn load_configuration() -> Result<()> {
     Ok(())
 }
 
+#[derive(Debug, Serialize)]
+#[serde(untagged)]
+pub enum NotificationEvent {
+    WindowManager(WindowManagerEvent),
+    Socket(SocketMessage),
+}
+
+#[derive(Debug, Serialize)]
+pub struct Notification {
+    pub event: NotificationEvent,
+    pub state: State,
+}
+
 pub fn notify_subscribers(notification: &str) -> Result<()> {
     let mut stale_subscriptions = vec![];
     let mut subscriptions = SUBSCRIPTION_PIPES.lock();

komorebi/src/process_command.rs

@@ -24,6 +24,8 @@ use crate::notify_subscribers;
 use crate::window_manager;
 use crate::window_manager::WindowManager;
 use crate::windows_api::WindowsApi;
+use crate::Notification;
+use crate::NotificationEvent;
 use crate::BORDER_OVERFLOW_IDENTIFIERS;
 use crate::CUSTOM_FFM;
 use crate::FLOAT_IDENTIFIERS;
@@ -221,7 +223,7 @@ impl WindowManager {
                 self.set_workspace_name(monitor_idx, workspace_idx, name)?;
             }
             SocketMessage::State => {
-                let state = serde_json::to_string_pretty(&window_manager::State::from(self))?;
+                let state = serde_json::to_string_pretty(&window_manager::State::from(&*self))?;
                 let mut socket =
                     dirs::home_dir().ok_or_else(|| anyhow!("there is no home directory"))?;
                 socket.push("komorebic.sock");
@@ -476,7 +478,10 @@ impl WindowManager {
             }
 
             self.process_command(message.clone())?;
-            notify_subscribers(&serde_json::to_string(&message)?)?;
+            notify_subscribers(&serde_json::to_string(&Notification {
+                event: NotificationEvent::Socket(message.clone()),
+                state: (&*self).into(),
+            })?)?;
         }
 
         Ok(())

komorebi/src/process_event.rs

@@ -15,6 +15,8 @@ use crate::notify_subscribers;
 use crate::window_manager::WindowManager;
 use crate::window_manager_event::WindowManagerEvent;
 use crate::windows_api::WindowsApi;
+use crate::Notification;
+use crate::NotificationEvent;
 use crate::HIDDEN_HWNDS;
 use crate::TRAY_AND_MULTI_WINDOW_IDENTIFIERS;
 
@@ -317,7 +319,10 @@ impl WindowManager {
             .open(hwnd_json)?;
 
         serde_json::to_writer_pretty(&file, &known_hwnds)?;
-        notify_subscribers(&serde_json::to_string(&event)?)?;
+        notify_subscribers(&serde_json::to_string(&Notification {
+            event: NotificationEvent::WindowManager(*event),
+            state: (&*self).into(),
+        })?)?;
 
         tracing::info!("processed: {}", event.window().to_string());
         Ok(())

komorebi/src/window_manager.rs

@@ -70,9 +70,8 @@ pub struct State {
     pub border_overflow_identifiers: Vec<String>,
 }
 
-#[allow(clippy::fallible_impl_from)]
+impl From<&WindowManager> for State {
-impl From<&mut WindowManager> for State {
+    fn from(wm: &WindowManager) -> Self {
-    fn from(wm: &mut WindowManager) -> Self {
         Self {
             monitors: wm.monitors.clone(),
             is_paused: wm.is_paused,
@@ -567,8 +566,12 @@ impl WindowManager {
                 // Calling this directly instead of the window.focus() wrapper because trying to
                 // attach to the thread of the desktop window always seems to result in "Access is
                 // denied (os error 5)"
-                WindowsApi::set_foreground_window(desktop_window.hwnd())
+                match WindowsApi::set_foreground_window(desktop_window.hwnd()) {
-                    .map_err(|error| anyhow!("{} {}:{}", error, file!(), line!()))?;
+                    Ok(_) => {}
+                    Err(error) => {
+                        tracing::warn!("{} {}:{}", error, file!(), line!());
+                    }
+                }
             }
         }