ZacharyZhang-NYandClaude Opus 5.5
bcce34cda1
MyGo v0.5.5 returns ui.Element as a checked value handle instead of a
pointer. Migrated with `mygo migrate-ui`, then fixed what the codemod
leaves to review:
- Element nil checks become .Valid(); absent elements are ui.Element{}.
- Input handlers and paint callbacks run outside the build pass, where
elements expire and Context methods are inert: read IsDisabled into a
local during the build, keep a ui.Handle for Focus, use c.Services()
for clipboard access, create ui.Local state during the build.
- Add core.AutoFocus: v0.5.5 records an overlay's opener after its
content builds, so same-frame autofocus lost focus restore on close.
It focuses one frame later; cascader rows defer their focus likewise.
- core.OverlayLayer identifies build passes by the root element, not
c.Now(), which repeats across passes and under the Tester clock.
- Context menus survive the opening press counted as PressedOutside;
split button tooltip no longer reorders its open menu; disabled
menubar rows pass presses to the panel; Form defers blur-started
async checks so the growing message no longer moves Submit away
from the release; Combobox drops its disabled copy now that MyGo
blocks typing under a disabled wrapper (canary flipped to a guard).
- The Tester clock is virtual: tests use Advance/Now instead of
time.Sleep/time.Now and read element state inside the view. The web
mirror advances the clock to wall time before each frame and input.
- AGENTS.md and docs describe the value Element API and the new pin.
Snapshot goldens are darwin-only and were not re-verified here.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
38 lines
1.0 KiB
Markdown
38 lines
1.0 KiB
Markdown
# 204 MessageHeader 消息头
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## 用途
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在消息上方显示模型名、时间与状态（发送中、生成中、已发送、失败），状态同时用图标和文字表达。
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## 最小示例
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```go
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chat.MessageHeader(c, chat.MessageHeaderOptions{Model: "herald-2", Time: time.Now(), Status: chat.MessageSent})
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```
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签名：`func MessageHeader(c *ui.Context, opts MessageHeaderOptions) ui.Element`
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## 参数
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| 字段 | 类型 | 默认值 | 含义 |
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| --- | --- | --- | --- |
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| `Model` | `string` | "" | 模型名，加粗；空则不显示。 |
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| `Time` | `time.Time` | 零值 | 时间，按 `15:04` 显示；零值不显示。 |
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| `Status` | `MessageStatus` | `MessageNoStatus` | `MessageSending`、`MessageStreaming`、`MessageSent`、`MessageFailed`；未知值 panic。 |
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## 状态
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生成中显示菱形加载标记（减少动画时静止）；失败用 Danger 色并带警示图标。
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## 事件
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无。
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## 键盘操作
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不获取焦点。
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## 限制
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- 时间格式固定为 24 小时制时分，日期由 MessageList 的日期分隔显示。
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