fix: show windows which are opened in fullscreen (closes #335)

src/api-wrappers/AXUIElement.swift

@@ -49,8 +49,11 @@ extension AXUIElement {
         return attribute(kAXWindowsAttribute, [AXUIElement].self)
     }
 
-    func isTabbed(_ window: AXUIElement) -> Bool {
-        return windows()?.first { $0 == window } == nil
+    func isTabbed(_ app: AXUIElement, _ spaceId: CGSSpaceID) -> Bool {
+        // we can only detect tabs for windows on the current space, as AXUIElement.windows() only reports current space windows
+        // also, windows that start in fullscreen will have the wrong spaceID at that point in time, so we check if they are fullscreen too
+        return spaceId == Spaces.currentSpaceId && !isFullScreen() &&
+            app.windows()?.first { $0 == self } == nil
     }
 
     func isMinimized() -> Bool {

src/logic/DebugProfile.swift

@@ -81,8 +81,8 @@ class DebugProfile {
             ("isMinimized", String(window.isMinimized)),
             ("isHidden", String(window.isHidden)),
             ("isOnAllSpaces", String(window.isOnAllSpaces)),
-            ("spaceId", window.spaceId.flatMap { String($0) } ?? "nil"),
-            ("spaceIndex", window.spaceIndex.flatMap { String($0) } ?? "nil"),
+            ("spaceId", String(window.spaceId)),
+            ("spaceIndex", String(window.spaceIndex)),
         ])
     }
 

src/logic/Window.swift

@@ -10,8 +10,8 @@ class Window {
     var isHidden: Bool
     var isMinimized: Bool
     var isOnAllSpaces: Bool
-    var spaceId: CGSSpaceID?
-    var spaceIndex: SpaceIndex?
+    var spaceId: CGSSpaceID
+    var spaceIndex: SpaceIndex
     var axUiElement: AXUIElement
     var application: Application
     var axObserver: AXObserver?
@@ -30,12 +30,12 @@ class Window {
         self.axUiElement = axUiElement
         self.application = application
         self.cgWindowId = axUiElement.cgWindowId()
-        self.icon = application.runningApplication.icon
-        self.isTabbed = application.axUiElement!.isTabbed(axUiElement)
-        self.isHidden = application.runningApplication.isHidden
-        self.isMinimized = axUiElement.isMinimized()
         self.spaceId = Spaces.currentSpaceId
         self.spaceIndex = Spaces.currentSpaceIndex
+        self.icon = application.runningApplication.icon
+        self.isTabbed = axUiElement.isTabbed(application.axUiElement!, spaceId)
+        self.isHidden = application.runningApplication.isHidden
+        self.isMinimized = axUiElement.isMinimized()
         self.isOnAllSpaces = false
         self.title = Window.bestEffortTitle(axUiElement, cgWindowId, application)
         debugPrint("Adding window", cgWindowId, title, application.runningApplication.bundleIdentifier ?? "nil", Spaces.currentSpaceId, Spaces.currentSpaceIndex)

src/logic/events/AccessibilityEvents.swift

@@ -21,11 +21,10 @@ func axObserverCallback(observer: AXObserver, element: AXUIElement, notification
 
 private func focusedUiElementChanged(_ element: AXUIElement, _ applicationPointer: UnsafeMutableRawPointer?) {
     // this event is the only opportunity we have to check if a window became a tab, or a tab became a window
-    // we can only detect tabs for windows on the current space, as AXUIElement.windows() only reports current space windows
     let application = Unmanaged<Application>.fromOpaque(applicationPointer!).takeUnretainedValue()
     Windows.list.forEach {
-        if $0.spaceId == Spaces.currentSpaceId && $0.application == application {
-            $0.isTabbed = application.axUiElement!.isTabbed($0.axUiElement)
+        if $0.application == application {
+            $0.isTabbed = $0.axUiElement.isTabbed(application.axUiElement!, $0.spaceId)
         }
     }
 }

src/ui/App.swift

@@ -189,9 +189,8 @@ class App: NSApplication, NSApplicationDelegate {
             debugPrint("showUiOrCycleSelection: isFirstSummon")
             isFirstSummon = false
             if Windows.list.count == 0 || CGWindow.isMissionControlActive() { hideUi(); return }
-            // TODO: find a way to update isSingleSpace by listening to space creation, instead of on every trigger
+            // TODO: find a way to update space info when spaces are changed, instead of on every trigger
             Spaces.idsAndIndexes = Spaces.allIdsAndIndexes()
-            // TODO: find a way to update space index when windows are moved to another space, instead of on every trigger
             Windows.updateSpaces()
             let screen = Screen.preferred()
             Windows.refreshWhichWindowsToShowTheUser(screen)

src/ui/main-window/ThumbnailView.swift

@@ -79,12 +79,12 @@ class ThumbnailView: NSStackView {
         }
         assignIfDifferent(&hiddenIcon.isHidden, !element.isHidden)
         assignIfDifferent(&minimizedIcon.isHidden, !element.isMinimized)
-        assignIfDifferent(&spaceIcon.isHidden, element.spaceIndex == nil || Spaces.isSingleSpace || Preferences.hideSpaceNumberLabels)
+        assignIfDifferent(&spaceIcon.isHidden, Spaces.isSingleSpace || Preferences.hideSpaceNumberLabels)
         if !spaceIcon.isHidden {
             if element.isOnAllSpaces {
                 spaceIcon.setStar()
             } else {
-                spaceIcon.setNumber(UInt32(element.spaceIndex!))
+                spaceIcon.setNumber(UInt32(element.spaceIndex))
             }
         }
         assignIfDifferent(&frame.size.width, max(thumbnail.frame.size.width + Preferences.intraCellPadding * 2, ThumbnailView.widthMin(screen)))