Add mouse-window-focus config

Sources/AppBundle/config/Config.swift

@@ -31,6 +31,7 @@ var defaultConfigUrl: URL {
 @MainActor var configUrl: URL = defaultConfigUrl
 
 struct Config: ConvenienceCopyable {
+    var mouseWindowFocus: Bool = false
     var afterLoginCommand: [any Command] = []
     var afterStartupCommand: [any Command] = []
     var _indentForNestedContainersWithTheSameOrientation: Void = ()

Sources/AppBundle/config/parseConfig.swift

@@ -91,6 +91,8 @@ private let configParser: [String: any ParserProtocol<Config>] = [
     "after-login-command": Parser(\.afterLoginCommand) { parseCommandOrCommands($0).toParsedToml($1) },
     "after-startup-command": Parser(\.afterStartupCommand) { parseCommandOrCommands($0).toParsedToml($1) },
 
+    "mouse-window-focus": Parser(\.mouseWindowFocus, parseBool),
+
     "on-focus-changed": Parser(\.onFocusChanged) { parseCommandOrCommands($0).toParsedToml($1) },
     "on-focused-monitor-changed": Parser(\.onFocusedMonitorChanged) { parseCommandOrCommands($0).toParsedToml($1) },
     // "on-focused-workspace-changed": Parser(\.onFocusedWorkspaceChanged, { parseCommandOrCommands($0).toParsedToml($1) }),
@@ -167,6 +169,14 @@ func parseCommandOrCommands(_ raw: TOMLValueConvertible) -> Parsed<[any Command]
     var errors: [TomlParseError] = []
 
     var config = rawTable.parseTable(Config(), configParser, .root, &errors)
+    if config.mouseWindowFocus {
+        config.onFocusChanged.removeAll { cmd in
+            cmd.info.kind.rawValue.localizedCaseInsensitiveContains("mouse")
+        }
+        config.onFocusedMonitorChanged.removeAll { cmd in
+            cmd.info.kind.rawValue.localizedCaseInsensitiveContains("mouse")
+        }
+    }
 
     if let mapping = rawTable[keyMappingConfigRootKey].flatMap({ parseKeyMapping($0, .rootKey(keyMappingConfigRootKey), &errors) }) {
         config.keyMapping = mapping

Sources/AppBundle/initAppBundle.swift

@@ -22,6 +22,7 @@ import Foundation
     checkAccessibilityPermissions()
     startUnixSocketServer()
     GlobalObserver.initObserver()
+    setupMouseTracking()
     Task {
         Workspace.garbageCollectUnusedWorkspaces() // init workspaces
         _ = Workspace.all.first?.focusWorkspace()

Sources/AppBundle/tree/MouseTracking.swift

@@ -0,0 +1,34 @@
+import AppKit
+import Common
+
+@MainActor
+func setupMouseTracking() {
+    print("✅ Mouse tracking initialized")
+    NSEvent.addGlobalMonitorForEvents(matching: .mouseMoved) { _ in
+        Task { @MainActor in
+            guard config.mouseWindowFocus else { return }
+            await autoFocusWindowUnderMouse()
+        }
+    }
+}
+
+@MainActor
+func autoFocusWindowUnderMouse() async {
+    let point = NSEvent.mouseLocation
+    let workspace = point.monitorApproximation.activeWorkspace
+    _ = workspace.workspaceMonitor.setActiveWorkspace(workspace)
+
+    guard let windowUnderMouse = point.findIn(tree: workspace.rootTilingContainer, virtual: false)
+    else {
+        return
+    }
+
+    do {
+        let focusedWindow = try await getNativeFocusedWindow()
+        if focusedWindow == windowUnderMouse {
+            return
+        }
+        windowUnderMouse.nativeFocus()
+    } catch {
+    }
+}

docs/config-examples/default-config.toml

@@ -13,6 +13,7 @@ after-startup-command = []
 
 # Start AeroSpace at login
 start-at-login = false
+mouse-window-focus = false
 
 # Normalizations. See: https://nikitabobko.github.io/AeroSpace/guide#normalization
 enable-normalization-flatten-containers = true