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>
48 lines
1.4 KiB
Markdown
48 lines
1.4 KiB
Markdown
# 426 EventChip · 事件块
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## 用途
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显示单个事件：左侧色条、标题与时间，超出时截断为省略号。
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## 最小示例
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```go
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loc := time.Local
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ev := exampleEvents(loc)[0]
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view := func(c *ui.Context) {
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core.Use(c, core.Settings{})
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if datetime.EventChip(c, ev, datetime.EventChipOptions{Location: loc}).Clicked() {
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fmt.Println("open", ev.ID)
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}
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}
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ui.Render(view, 400, 300, 1)
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```
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## 参数
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`func EventChip(c *ui.Context, ev CalendarEvent, opts EventChipOptions) ui.Element`
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| 字段 | 类型 | 默认值 | 含义 |
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| --- | --- | --- | --- |
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| `Location` | `*time.Location` | 必填 | 切分日期与显示时间所用的时区；为 nil 时 panic，不做隐式 UTC 转换。 |
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| `Hour12` | `bool` | false | 12 小时制显示时间。 |
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| `Inline` | `bool` | false | 开始时间与标题放在一行。 |
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| `Selected` | `bool` | false | 选中：选中底色 + 内嵌框。 |
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| `Disabled` | `bool` | false | 禁用：不响应点击、拖动与快捷键，弹层随之关闭。 |
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## 状态
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默认、悬停与按下（色调加深）、聚焦、选中、禁用。
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## 事件
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返回的元素可用 `.Clicked()` 判断激活。
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## 键盘操作
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- Tab 聚焦，Enter 或 Space 激活。
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## 限制
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- 事件颜色来自主题：AccentText、Info、Success、Warning、Danger、TextMuted，均在两套主题下对 Surface 达到 3:1；Ornament 在浅色主题下仅 2.8:1，不纳入。
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