87 lines
2.6 KiB
Go
87 lines
2.6 KiB
Go
package mujica
|
|
|
|
import (
|
|
"github.com/egoist/mygo/ui"
|
|
|
|
"mujicaui/theme"
|
|
)
|
|
|
|
// FormFieldOptions configure a FormField.
|
|
type FormFieldOptions struct {
|
|
// Required marks the label; the check itself belongs to the caller or Form.
|
|
Required bool
|
|
Description string
|
|
// Error shows below the control and marks it invalid for assistive technology.
|
|
Error string
|
|
// Horizontal puts the label beside the control instead of above it.
|
|
Horizontal bool
|
|
}
|
|
|
|
// FormField labels the element control returns and shows help and error text for it.
|
|
func FormField(c *ui.Context, label string, opts FormFieldOptions, control func() *ui.Element) *ui.Element {
|
|
if !opts.Horizontal {
|
|
return formFieldBuild(c, label, opts, false, control)
|
|
}
|
|
var f *ui.Element
|
|
formFieldGrid(c, func() { f = formFieldBuild(c, label, opts, true, control) })
|
|
return f
|
|
}
|
|
|
|
// formFieldGrid holds fields whose labels sit in a column beside their controls.
|
|
func formFieldGrid(c *ui.Context, fields func()) *ui.Element {
|
|
d := Density(c)
|
|
return ui.Grid(c).ColumnTracks(ui.FitContent(), ui.Fr(1)).GapX(d.Unit() * 3).GapY(d.Unit() * 4).
|
|
AlignItems(ui.Start).Children(fields)
|
|
}
|
|
|
|
// formFieldBuild builds the label and the control column; beside makes them two grid cells.
|
|
func formFieldBuild(c *ui.Context, label string, opts FormFieldOptions, beside bool, control func() *ui.Element) *ui.Element {
|
|
if label == "" {
|
|
panic("mujica: FormField needs a label")
|
|
}
|
|
k := Tokens(c)
|
|
d := Density(c)
|
|
var head, content, ctrl *ui.Element
|
|
body := func() {
|
|
head = ui.Row(c).Gap(d.Unit()).AlignItems(ui.Center)
|
|
if beside {
|
|
head.MinHeight(d.ControlHeight()).Justify(ui.End)
|
|
}
|
|
var text *ui.Element
|
|
head.Children(func() {
|
|
text = ui.Text(c, label).FontWeight(500).SingleLine()
|
|
if opts.Required {
|
|
ui.Text(c, "*").TextColor(k.Danger).Role(ui.RoleNone)
|
|
}
|
|
})
|
|
clicked := head.Clicked()
|
|
content = ui.Column(c).Gap(d.Unit() * 1.5).MinWidth(0)
|
|
content.Children(func() {
|
|
ctrl = control()
|
|
if ctrl == nil {
|
|
panic("mujica: FormField " + label + ": control returned nil")
|
|
}
|
|
if opts.Description != "" {
|
|
ui.Text(c, opts.Description).TextColor(k.TextMuted).FontSize(FontSize(c, theme.CaptionSize)).Role(ui.RoleNone)
|
|
}
|
|
if opts.Error != "" {
|
|
ui.Text(c, opts.Error).TextColor(k.Danger).FontSize(FontSize(c, theme.CaptionSize)).Role(ui.RoleNone)
|
|
}
|
|
})
|
|
ctrl.Label(label).Description(opts.Description).Error(opts.Error)
|
|
if opts.Required {
|
|
ctrl.Description(msg(c, "form.required"))
|
|
}
|
|
if ctrl.IsDisabled() {
|
|
text.TextColor(k.TextMuted)
|
|
} else if clicked {
|
|
ctrl.Focus()
|
|
}
|
|
}
|
|
if beside {
|
|
body()
|
|
return content
|
|
}
|
|
return ui.Column(c).Gap(d.Unit() * 1.5).Children(body)
|
|
}
|