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>
2.1 KiB
2.1 KiB
089 Popconfirm 气泡确认
用途
在触发控件旁做轻量确认（归档、移出列表等可撤销操作）。说明与面板关联，确认与取消都可聚焦。高风险操作请用 AlertDialog。
最小示例
open := false
view := func(c *ui.Context) {
core.Use(c, core.Settings{})
b := input.Button(c, "Archive", input.ButtonOptions{Variant: input.Secondary})
if b.Clicked() {
open = true
}
if overlay.Popconfirm(c, b, &open, overlay.PopconfirmOptions{Title: "Archive this letter?"}).Confirmed {
fmt.Println("archived")
}
}
ui.Render(view, 400, 300, 1)
签名：func Popconfirm(c *ui.Context, anchor ui.Element, open *bool, opts PopconfirmOptions) PopconfirmResult。anchor 为 nil 或 Title 为空时 panic。
参数
| 字段 | 类型 | 默认值 | 含义 |
|---|---|---|---|
Title |
string |
必填 | 问题，也是面板的无障碍名称。 |
Description |
string |
"" |
补充说明，作为面板的无障碍描述。 |
ConfirmLabel |
string |
内置“确定 / Confirm” | 确认按钮文字。 |
CancelLabel |
string |
内置“取消 / Cancel” | 取消按钮文字。 |
Danger |
bool |
false |
确认按钮使用危险变体，图标改为 Danger 色，打开时焦点改在取消。 |
PopconfirmResult{Confirmed, Canceled bool} 只在发生选择的那一帧为 true。
状态
与 Popover 相同的面板；下方放不下时翻到上方。
事件
Confirmed：点击确认或在其上按 Enter / Space。Canceled：点击取消、Escape、外部点击。
键盘操作
| 按键 | 行为 |
|---|---|
| 打开时 | 焦点在确认按钮；Danger 时在取消按钮，连按 Enter 不会执行危险操作。 |
| Enter | 触发聚焦的按钮。 |
| Tab | 在取消与确认间移动，焦点顺序紧跟锚点。 |
| Escape | 取消并把焦点还给锚点。 |
限制
- 打开期间外部点击只用于关闭，不传给下方控件：
PopoverBase用覆盖整窗的背板接收点击（ui/base.go:373）。 - 位置只有下方与上方（
ui/widgets.go:689）；宽度不超过窗口，说明过长时滚动，按钮始终可见。