From c49a2bcd4bc81e31b77eaba8e569fc1335d19ca1 Mon Sep 17 00:00:00 2001
From: Louis Pontoise <lwouis@gmail.com>
Date: Tue, 8 Sep 2020 16:40:45 +0900
Subject: [PATCH] fix: crash from appcenter in rare scenario

Stack trace:

closure #1 () -> () in AltTab.(windowDestroyed in _3E1A2D100A6A10BAACF80B17AC9C41B5)(__C.AXUIElementRef) throws -> () Windows.swift:43
reabstraction thunk helper from @escaping @callee_guaranteed () -> () to @escaping @callee_unowned @convention(block) () -> () <compiler-generated>:0
---
 src/logic/Windows.swift                    | 6 +++---
 src/logic/events/AccessibilityEvents.swift | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/logic/Windows.swift b/src/logic/Windows.swift
index 7e5368e98..cf9f07bcf 100644
--- a/src/logic/Windows.swift
+++ b/src/logic/Windows.swift
@@ -94,10 +94,10 @@ class Windows {
         return targetIndex
     }
 
-    static func moveFocusedWindowIndexAfterWindowDestroyedInBackground(_ destroyedWindowIndex: Int) {
-        if focusedWindowIndex > destroyedWindowIndex {
+    static func moveFocusedWindowIndexAfterWindowDestroyedInBackground(_ window: Window) {
+        if focusedWindowIndex > window.lastFocusOrder {
             cycleFocusedWindowIndex(-1)
-        } else if focusedWindowIndex == destroyedWindowIndex && !focusedWindow()!.shouldShowTheUser {
+        } else if focusedWindowIndex == window.lastFocusOrder && !window.shouldShowTheUser {
             cycleFocusedWindowIndex(1)
         }
     }
diff --git a/src/logic/events/AccessibilityEvents.swift b/src/logic/events/AccessibilityEvents.swift
index d5d4a4aab..01fb90df2 100644
--- a/src/logic/events/AccessibilityEvents.swift
+++ b/src/logic/events/AccessibilityEvents.swift
@@ -151,7 +151,7 @@ private func windowDestroyed(_ element: AXUIElement) throws {
             Windows.removeAndUpdateFocus(window)
             let windowlessApp = window.application.addWindowslessAppsIfNeeded()
             if Windows.list.count > 0 {
-                Windows.moveFocusedWindowIndexAfterWindowDestroyedInBackground(window.lastFocusOrder)
+                Windows.moveFocusedWindowIndexAfterWindowDestroyedInBackground(window)
                 App.app.refreshOpenUi(windowlessApp)
             } else {
                 App.app.hideUi()