[Bug]: F-37 Generic dialogs register an `unload` listener (Chrome: "Permissions policy violation: unload is not allowed")
维护者通常 1 天内回复
还没有人认领这个 Issue。
评估
- 难度
- 2/5
- 预计耗时
- 1-3 小时
- 新手友好度
- 72/100
- Issue 类型
- 缺陷
- 描述清晰度
- 基本清楚
- 活跃度
- 活跃
- 技术栈
- javascript
- 领域
- frontend
调研方向
从 nextcloud-libraries/nextcloud-dialogs 中的 lib/components/GenericDialog.vue 开始，检查 unload 监听器的生命周期。检查 legacy webpack bundle 如何生成 core-common.js，然后决定是否应按描述移除或替换该监听器；完成的标准是，相关 bundle 不再注册无效的 unload 监听器，也不再触发 Chrome violation。
由索引模型根据 Issue 内容生成。
描述
⚠️ This issue respects the following points: ⚠️
- This is not a troubleshooting question, general support matter, or webserver/proxy problem, but likely a bug (if unsure, ask the Community Help Forum).
- This issue is not already reported on Github OR solved at the Community Help Forum (I've searched!).
- I'm using a maintained major version of Nextcloud Server and tested against the latest patch level. (Supported major versions and current patch levels).
- I agree to follow Nextcloud's Code of Conduct.
- I've tried my best to provide clear reproduction steps that someone unfamiliar with this bug could use to reproduce it.
Bug description
F-37 · Generic dialogs register an unload listener (Chrome: "Permissions policy violation: unload is not allowed")
| Repository | nextcloud-libraries/nextcloud-dialogs |
| Severity | Low (console violation on every confirmation dialog; the listener has no effect) |
| Component | lib/components/GenericDialog.vue |
| Affects | @nextcloud/dialogs 7.5.0, used by Nextcloud 35.0.1 (e.g. the confirmation when deleting files) |
| Verified | Chrome DevTools on a production instance; source of the bundled library |
What happens
Deleting files shows the confirmation dialog, and Chrome logs
[Violation] Permissions policy violation: unload is not allowed in this document.
confirmDestructive @ dialogs.js …
Cause
const handleUnload = () => `${props.name}: ${props.text}`
onMounted(() => window.addEventListener('unload', handleUnload))
onUnmounted(() => window.removeEventListener('unload', handleUnload))
The return value of an unload handler is ignored, so the listener does nothing. It looks like it
was meant to be beforeunload (warn before leaving the page while a dialog is open). Chrome is
phasing out unload and blocks it by default on more and more sites, which produces the violation.
Suggestion
Use beforeunload with event.preventDefault() if the warning is wanted, or remove the listener.
The patch in this package removes it in the legacy (webpack) bundle, core-common.js, which the
Files app uses. The copy in the Vite bundles stays: rebuilding them renames hundreds of chunk files.
Steps to reproduce
see the top
Expected behavior
see the top
Nextcloud Server version
35
Operating system
None
PHP engine version
None
Web server
None
Database engine version
None
Is this bug present after an update or on a fresh install?
None
Are you using the Nextcloud Server Encryption module?
None
What user-backends are you using?
- Default user-backend (database)
- LDAP/ Active Directory
- SSO - SAML
- Other
Configuration report
List of activated Apps
Nextcloud Signing status
Nextcloud Logs
Additional info
No response
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