security.txt + bugfixes

react/shared/hooks/before-unload.js

@@ -0,0 +1,16 @@
+import {useCallback, useEffect} from "react";
+
+export default function useBeforeUnload(modified) {
+
+    const capture = useCallback((event) => {
+        if (modified) {
+            event.preventDefault();
+        }
+    }, [modified]);
+
+    useEffect(() => {
+        window.addEventListener("beforeunload", capture, {capture: true});
+        return () => window.removeEventListener("beforeunload", capture, { capture: true });
+    }, []);
+
+}

react/shared/hooks/editor-navigate.js

@@ -0,0 +1,21 @@
+import {useNavigate} from "react-router-dom";
+
+export default function useEditorNavigate(L, showDialog) {
+
+    const navigate = useNavigate();
+
+    return (uri, modified, options = null) => {
+
+        if (!modified) {
+            navigate(uri, options ?? {});
+        } else {
+            showDialog(
+                "You still have unsaved changes, are you really sure you want to leave this view?",
+                "Unsaved changes",
+                [L("general.cancel"), L("general.leave")],
+                (buttonIndex) => buttonIndex === 1 && navigate(uri, options ?? {})
+            )
+        }
+    };
+
+}