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>
43 lines
1.2 KiB
Markdown
43 lines
1.2 KiB
Markdown
# 255 CostEstimator · 费用估算
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## 用途
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显示输入、输出 token 数及按调用方单价估算的费用。
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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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chat.CostEstimator(c, chat.CostEstimatorOptions{InputTokens: 12000, OutputTokens: 3400, InputPrice: 3, OutputPrice: 15})
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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 CostEstimator(c *ui.Context, opts CostEstimatorOptions) ui.Element`。另有 `EstimateCost(inputTokens, outputTokens, inputPrice, outputPrice) CostEstimate`。
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| 字段 | 类型 | 默认值 | 含义 |
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| --- | --- | --- | --- |
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| `InputTokens`, `OutputTokens` | `int` | 0 | token 数，不能为负。 |
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| `InputPrice`, `OutputPrice` | `float64` | 0 | 每百万 tokens 单价，须有限且不为负。 |
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| `Currency` | `string` | "$" | 金额前缀。 |
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| `Digits` | `int` | 0 → 4 | 金额小数位；负数 panic。 |
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## 状态
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只读表格：输入、输出、合计（衬线标签、酒红加粗金额）与单价说明。
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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；整体读作“预计费用 金额”。
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## 限制
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- 估算按 tokens × 单价 / 1,000,000 的浮点运算；显示按 `Digits` 位小数四舍五入，不用于结算。
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