From cd2ab79be458c1f5e85bf67fb9937e9ee88badfb Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Thu, 28 Apr 2022 19:45:12 +0200
Subject: [PATCH] Ignore connection errors caused by page navigation

See WoltLab/com.woltlab.wbb#539
---
 ts/WoltLabSuite/Core/Ajax/DboAction.ts           | 16 ++++++++++++++--
 .../files/js/WoltLabSuite/Core/Ajax/DboAction.js | 13 +++++++++++--
 2 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/ts/WoltLabSuite/Core/Ajax/DboAction.ts b/ts/WoltLabSuite/Core/Ajax/DboAction.ts
index 241315f688..92b9f1266d 100644
--- a/ts/WoltLabSuite/Core/Ajax/DboAction.ts
+++ b/ts/WoltLabSuite/Core/Ajax/DboAction.ts
@@ -35,6 +35,8 @@ type RequestBody = {
   parameters?: Payload;
 };
 
+let ignoreConnectionErrors: boolean | undefined = undefined;
+
 export class DboAction {
   private readonly actionName: string;
   private readonly className: string;
@@ -49,6 +51,14 @@ export class DboAction {
   }
 
   static prepare(actionName: string, className: string): DboAction {
+    if (ignoreConnectionErrors === undefined) {
+      ignoreConnectionErrors = false;
+
+      window.addEventListener("beforeunload", () => {
+        ignoreConnectionErrors = true;
+      });
+    }
+
     return new DboAction(actionName, className);
   }
 
@@ -147,8 +157,10 @@ export class DboAction {
       if (error instanceof ApiError) {
         throw error;
       } else {
-        // Re-package the error for use in our global "unhandledrejection" handler.
-        throw new ConnectionError(error);
+        if (!ignoreConnectionErrors) {
+          // Re-package the error for use in our global "unhandledrejection" handler.
+          throw new ConnectionError(error);
+        }
       }
     } finally {
       if (showLoadingIndicator) {
diff --git a/wcfsetup/install/files/js/WoltLabSuite/Core/Ajax/DboAction.js b/wcfsetup/install/files/js/WoltLabSuite/Core/Ajax/DboAction.js
index ffaa9bec14..664692bc7c 100644
--- a/wcfsetup/install/files/js/WoltLabSuite/Core/Ajax/DboAction.js
+++ b/wcfsetup/install/files/js/WoltLabSuite/Core/Ajax/DboAction.js
@@ -14,6 +14,7 @@ define(["require", "exports", "tslib", "./Error", "./Status", "../Core"], functi
     exports.DboAction = void 0;
     AjaxStatus = tslib_1.__importStar(AjaxStatus);
     Core = tslib_1.__importStar(Core);
+    let ignoreConnectionErrors = undefined;
     class DboAction {
         constructor(actionName, className) {
             this._objectIDs = [];
@@ -24,6 +25,12 @@ define(["require", "exports", "tslib", "./Error", "./Status", "../Core"], functi
             this.className = className;
         }
         static prepare(actionName, className) {
+            if (ignoreConnectionErrors === undefined) {
+                ignoreConnectionErrors = false;
+                window.addEventListener("beforeunload", () => {
+                    ignoreConnectionErrors = true;
+                });
+            }
             return new DboAction(actionName, className);
         }
         getAbortController() {
@@ -105,8 +112,10 @@ define(["require", "exports", "tslib", "./Error", "./Status", "../Core"], functi
                     throw error;
                 }
                 else {
-                    // Re-package the error for use in our global "unhandledrejection" handler.
-                    throw new Error_1.ConnectionError(error);
+                    if (!ignoreConnectionErrors) {
+                        // Re-package the error for use in our global "unhandledrejection" handler.
+                        throw new Error_1.ConnectionError(error);
+                    }
                 }
             }
             finally {
-- 
2.20.1