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
848 B
Markdown
48 lines
848 B
Markdown
# 288 BarsLoader 条形加载
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## 用途
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四根竖条依次升降的加载标记。
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## 最小示例
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```go
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view := func(c *ui.Context) {
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core.Use(c, core.Settings{})
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feedback.BarsLoader(c, feedback.LoaderOptions{Size: 20, Label: "Indexing"})
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}
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ui.Render(view, 400, 300, 1)
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```
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签名：`func BarsLoader(c *ui.Context, opts LoaderOptions) ui.Element`
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## 参数
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`LoaderOptions`
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| 字段 | 类型 | 默认值 | 含义 |
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| --- | --- | --- | --- |
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| Size | float32 | 0（即 16） | 标记高度。 |
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| Label | string | 内置“加载中” | 朗读文字。 |
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| ShowLabel | bool | false | 显示文字。 |
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| Color | ui.Color | AccentText | 颜色。 |
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见 DotsLoader。
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## 状态
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- 条高吸附像素；只在绘制时动画。
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- 减少动画：静止并显示文字。
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## 事件
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- 无。
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## 键盘操作
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- 无。
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## 限制
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- 无。
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