Field表单字段
查看源码components/field.go垂直字段#
生产 Field 返回控件槽,预览填入生产 Input。
email := tree.ID(page, "email")
field := components.BeginField(canvas, theme, bounds).For(email)
control := field.Paint("Work email", "Used only for release notifications.", "")
components.PaintInput(canvas, theme, control, components.InputSnapshot{
ID: email, Label: "Work email", Value: value,
})响应式方向#
窄窗口垂直,宽窗口切换为水平布局。
email := tree.ID(page, "email")
field := components.BeginField(canvas, theme, bounds).For(email).
Orientation(components.FieldResponsive)
control := field.Paint("Work email", "Used only for release notifications.", "")
components.PaintInput(canvas, theme, control, components.InputSnapshot{
ID: email, Label: "Work email", Value: value,
})错误状态#
必填、无效元数据与无效输入保持一致。
email := tree.ID(page, "email")
invalid := !strings.Contains(value, "@")
field := components.BeginField(canvas, theme, bounds).For(email).Required()
errorText := ""
if invalid {
field = field.Invalid()
errorText = "Enter a valid work email."
}
control := field.Paint("Work email", "Used only for release notifications.", errorText)
components.PaintInput(canvas, theme, control, components.InputSnapshot{
ID: email, Label: "Work email", Value: value, Invalid: invalid,
})安装
将组件源码复制到自己的项目,直接修改。
go run ./cmd/viva add --out ./components/local field源码组件用法#
此预览直接调用生产 Go 组件。稳定 ID、值与打开状态仍由应用持有;组件只负责绘制并声明交互语义。
- 标题旁的源码链接列出了全部选项与视觉决策。
- 请使用原生命令验证系统文本、焦点、无障碍与平台集成。
- 浏览器预览验证共享布局和场景行为,不代表原生性能。
验证边界#
示例覆盖当前 API 的代表性状态,但不表示每个桌面后端都已完成真机验证。
键盘操作
Tab 在控件间移动;Ctrl/⌘ K 搜索组件。进入预览后,键盘事件由 Go 运行时处理。