feat(sender-template): support appendTo for template select by SonyLeo · Pull Request #394 · opentiny/tiny-robot

SonyLeo · 2026-08-24T11:29:21Z

背景

Template Select 下拉菜单此前固定挂载到 body，并使用 fixed 定位。

在局部容器、嵌入式界面或独立 Surface 中使用时，弹层无法归属于对应容器的层叠上下文，可能出现层级或定位不符合预期的问题。

改动内容

为 TemplateOptions 新增 appendTo 配置：

appendTo?: string | HTMLElement

支持通过 CSS 选择器或 DOM 元素指定 Template Select 下拉菜单的 Teleport 目标。

TrSender.template(templateItems, {
  appendTo: '.custom-surface',
})

配置透传链路：

Template
  -> TemplateSelect
  -> TemplateSelectNodeView
  -> TemplateSelectView

定位策略

根据实际挂载目标选择定位方式：

挂载目标	定位策略
未配置或挂载到 `body`	`fixed`
自定义容器	`absolute`

具体行为：

未配置 appendTo 时，保持原有 body + fixed 行为。
指定自定义容器时，弹层挂载到目标容器并使用 absolute 定位。
保留现有 offset、flip、shift 和 autoUpdate 定位逻辑。
复用现有 useTeleportTarget，统一处理选择器、DOM 元素和目标回退逻辑。

容器解析与回退

appendTo 为字符串时，通过 CSS 选择器查找目标元素。
appendTo 为 HTMLElement 时，直接使用该元素。
目标不存在时，自动回退到 body。
未配置 appendTo 时，默认挂载到 body。

使用方式

默认行为无需修改：

TrSender.template(templateItems)

挂载到指定容器：

TrSender.template(templateItems, {
  appendTo: '.custom-surface',
})

或传入 DOM 元素：

TrSender.template(templateItems, {
  appendTo: containerElement,
})

兼容性

未配置 appendTo 时，行为与改动前保持一致。
不影响 TemplateBlock、普通文本模板项和模板数据结构。
不影响 Template Select 的选择、键盘操作和点击外部关闭逻辑。
不影响自动定位、翻转和边界避让逻辑。

测试验证

默认场景：弹层挂载到 body。
自定义容器：弹层挂载到指定容器并使用 absolute 定位。
验证下拉选项选择和关闭行为。
通过现有 Template 相关 Playwright 用例。

验证结果：

21 passed
type-check passed
build:components passed
git diff --check passed

Summary by CodeRabbit

New Features
- Added configurable mounting for the Sender template dropdown using a CSS selector or HTML element.
- Dropdowns now support custom containers with appropriate positioning, while retaining body as the default target.
- Added safe fallback behavior for invalid or unavailable mounting targets, including Shadow DOM scenarios.
Documentation
- Updated Sender documentation and examples to describe the new appendTo option.

github-actions · 2026-08-24T11:35:43Z

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github-actions · 2026-08-24T11:35:44Z

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commit: 03472f7

coderabbitai · 2026-08-28T03:00:32Z

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📒 Files selected for processing (3)

packages/components/src/shared/composables/useTeleportTarget.ts
packages/test/src/sender/index.vue
packages/test/src/sender/specs/template/append-to.spec.ts

Walkthrough

The Template extension now accepts an appendTo target for its dropdown. The target supports CSS selectors and HTMLElement values, with body fallback and custom positioning. Sender test helpers, demo controls, documentation, and Playwright coverage were added.

Changes

Template appendTo support

Layer / File(s)	Summary
Option contract and propagation `packages/components/src/sender/extensions/template/types.ts`, `packages/components/src/sender/extensions/template/extension.ts`, `packages/components/src/sender/extensions/template/select/extension.ts`, `packages/test/src/sender/index.vue`, `docs/src/components/sender.md`	`TemplateOptions` now accepts `appendTo`. The option reaches `TemplateSelect` and is shown in the Sender documentation and test page.
Teleport resolution and dropdown rendering `packages/components/src/shared/composables/useTeleportTarget.ts`, `packages/components/src/sender/extensions/template/select/template-select-view.vue`	The dropdown resolves selector, element, body, and fallback targets. Custom targets use absolute positioning; body uses fixed positioning.
Test surface and behavior coverage `packages/test/src/sender/helpers/template-helper.ts`, `packages/test/src/sender/selectors.ts`, `packages/test/src/sender/index.vue`, `packages/test/src/sender/specs/template/append-to.spec.ts`	Test helpers, selectors, demo controls, and Playwright tests cover custom mounting, closing, invalid selectors, and Shadow DOM fallbacks.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: 🔵 Low · up to 1b2a8

A disconnected HTMLElement passed through appendTo can leave the template dropdown outside the document, preventing users from seeing or interacting with it; the PR is otherwise mergeable with explicit follow-up to validate the target connection and add a regression test.

Sequence Diagram(s)

sequenceDiagram
  participant Sender
  participant TemplateSelect
  participant useTeleportTarget
  participant DOM
  Sender->>TemplateSelect: Pass appendTo options
  TemplateSelect->>useTeleportTarget: Resolve target with body fallback
  useTeleportTarget-->>TemplateSelect: Return teleport target
  TemplateSelect->>DOM: Teleport dropdown
  TemplateSelect->>DOM: Apply fixed or absolute positioning

Poem

A rabbit sets the dropdown near,
To body, shadow, far, or near.
A selector guides its little hop,
Invalid paths return to the top.
Tests watch each opening stop.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding appendTo support for the Sender template select.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 7 files. (3 skipped: 3 …
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 7 files. (3 skipped: 3 unsupported.)

✨ Finishing Touches 💡 1

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Actionable comments posted: 1

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Inline comments:
In `@packages/components/src/shared/composables/useTeleportTarget.ts`:
- Around line 13-17: Update useTeleportTarget so the direct HTMLElement target
is returned only when target.isConnected is true; otherwise continue through the
configured fallback handling. Add a regression test covering a detached
HTMLElement target and verifying the expected fallback is used.

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⚙️ Run configuration

Configuration used: Repository UI

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Run ID: f4159194-1d93-450c-9155-545551f53370

📥 Commits

Reviewing files that changed from the base of the PR and between e8440c0 and 1b2a86c.

📒 Files selected for processing (10)

docs/src/components/sender.md
packages/components/src/sender/extensions/template/extension.ts
packages/components/src/sender/extensions/template/select/extension.ts
packages/components/src/sender/extensions/template/select/template-select-view.vue
packages/components/src/sender/extensions/template/types.ts
packages/components/src/shared/composables/useTeleportTarget.ts
packages/test/src/sender/helpers/template-helper.ts
packages/test/src/sender/index.vue
packages/test/src/sender/selectors.ts
packages/test/src/sender/specs/template/append-to.spec.ts

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…connected elements

github-actions · 2026-08-28T08:57:30Z

🧹 Preview Cleaned Up

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feat(components): support appendTo for template select

8887880

gene9831 reviewed Aug 27, 2026

View reviewed changes

feat: enhance template select with appendTo option and fallback handling

1b2a86c

coderabbitai Bot reviewed Aug 28, 2026

View reviewed changes

Comment thread packages/components/src/shared/composables/useTeleportTarget.ts

feat: update setTemplateAppendTo to accept HTMLElement and handle dis…

03472f7

…connected elements

gene9831 approved these changes Aug 28, 2026

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gene9831 merged commit 59ea5b5 into opentiny:develop Aug 28, 2026
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feat(sender-template): support appendTo for template select - #394

feat(sender-template): support appendTo for template select#394
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SonyLeo:feat/sender-template-append-to

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背景

改动内容

定位策略

容器解析与回退

使用方式

兼容性

测试验证

Summary by CodeRabbit

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Walkthrough

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