Files
MujicaUI/examples/gallery/composite_form.go
T

205 lines
6.5 KiB
Go

package main
import (
"fmt"
"strings"
"time"
"github.com/egoist/mygo/ui"
mujica "mujicaui"
)
const formID = "c-form"
// Simulated latencies of the name check and the server.
const (
formCheckDelay = 400 * time.Millisecond
formSubmitDelay = 900 * time.Millisecond
)
// formPhase is what the form composite shows.
type formPhase int
const (
formEditing formPhase = iota
formSucceeded
formFailed
)
type formSubmitDemo struct {
st mujica.FormState
name string
password string
debut mujica.Date
tags []string
terms bool
failNext bool
phase formPhase
failure string
checks chan formAsync
done chan string
}
func newFormSubmitDemo() formSubmitDemo {
return formSubmitDemo{checks: make(chan formAsync, 8), done: make(chan string, 1)}
}
// formTaken are the names the simulated archive already holds.
var formTaken = []string{"admin", "oblivionis"}
func (g *gallery) formView(c *ui.Context, log func(string)) {
s := &g.cForm
for drained := false; !drained; {
select {
case r := <-s.checks:
log(fmt.Sprintf("name check v%d: %q, kept %v", r.version, r.err, s.st.Resolve("name", r.version, r.err)))
case e := <-s.done:
s.st.EndSubmit("")
s.phase, s.failure = formSucceeded, e
if e != "" {
s.phase = formFailed
}
log(fmt.Sprintf("server answered, error %q", e))
default:
drained = true
}
}
mujica.Card(c, mujica.CardOptions{Title: g.t("Audition entry", "试演报名")}, func() {
switch s.phase {
case formSucceeded:
g.formSuccess(c, log)
case formFailed:
g.formFailure(c, log)
default:
ui.Column(c).FillWidth().MaxWidth(640).Gap(16).Children(func() { g.formEdit(c, log) })
}
})
}
func (g *gallery) formEdit(c *ui.Context, log func(string)) {
s := &g.cForm
if mujica.Switch(c, &s.failNext, g.t("The server rejects the next submit", "服务器拒绝下一次提交"), mujica.SwitchOptions{Disabled: s.st.Submitting()}).Changed() {
log(fmt.Sprintf("fail next submit %v", s.failNext))
}
r := mujica.LoadingOverlay(c, s.st.Submitting(), mujica.LoadingOverlayOptions{Label: g.t("Submitting…", "正在提交…")}, func() {
res := mujica.Form(c, &s.st, mujica.FormOptions{Horizontal: true, SubmitLabel: g.t("Submit entry", "提交报名")}, func(f *mujica.FormScope) {
g.formFields(c, f, log)
})
res.Element.FillWidth()
if res.Reset() {
log("reset to initial values")
}
if res.Submitted() {
fail := ""
if s.failNext {
s.failNext = false
fail = g.t("The archive is closed for the night. Your entry was not sent.", "档案馆今夜已闭馆,报名未送达。")
}
// The password is never logged, not even its length.
log(fmt.Sprintf("submitted %q, debut %s, roles %q", s.name, s.debut.Format("2006-01-02"), s.tags))
go func() {
time.Sleep(formSubmitDelay)
s.done <- fail
c.Invalidate()
}()
}
})
r.Element.FillWidth()
}
func (g *gallery) formFields(c *ui.Context, f *mujica.FormScope, log func(string)) {
s := &g.cForm
mujica.FormItem(f, "name", &s.name, mujica.FormItemOptions[string]{Label: g.t("Stage name", "艺名"), Required: true,
Description: g.t("Checked against the archive; “Oblivionis” is taken.", "将与档案核对;“Oblivionis”已被占用。"),
Validate: func(v string) string {
if len([]rune(strings.TrimSpace(v))) < 2 {
return g.t("Use at least 2 characters.", "至少 2 个字符。")
}
return ""
},
Async: func(v string, version uint64) {
log(fmt.Sprintf("name check started v%d", version))
go func() {
time.Sleep(formCheckDelay)
msg := ""
for _, t := range formTaken {
if strings.EqualFold(strings.TrimSpace(v), t) {
msg = g.t("That name is taken.", "该名称已被占用。")
}
}
s.checks <- formAsync{version, msg}
c.Invalidate()
}()
}}, func() *ui.Element {
return mujica.TextInput(c, &s.name, mujica.TextInputOptions{}).Input
})
mujica.FormItem(f, "password", &s.password, mujica.FormItemOptions[string]{Label: g.t("Password", "密码"), Required: true,
Validate: func(v string) string {
if len([]rune(v)) < 8 {
return g.t("Use at least 8 characters.", "至少 8 个字符。")
}
return ""
}}, func() *ui.Element {
r := mujica.PasswordInput(c, &s.password, mujica.PasswordInputOptions{})
if r.Submitted() {
s.st.Submit()
}
return r.Input
})
mujica.FormItem(f, "debut", &s.debut, mujica.FormItemOptions[mujica.Date]{Label: g.t("Debut date", "首演日期"), Required: true}, func() *ui.Element {
r := mujica.DatePicker(c, &s.debut, mujica.DatePickerOptions{Clearable: true})
if r.Changed() {
log("debut " + s.debut.Format("2006-01-02"))
}
return r.Element
})
mujica.FormItem(f, "roles", &s.tags, mujica.FormItemOptions[[]string]{Label: g.t("Roles", "担当"), Required: true,
Description: g.t("Up to 4; press Enter after each.", "最多 4 个;每个后按 Enter。")}, func() *ui.Element {
r := mujica.TagsInput(c, &s.tags, mujica.TagsInputOptions{Max: 4, Invalid: s.st.Error("roles") != "", Placeholder: g.t("keyboard, bass…", "键盘、贝斯…")})
if r.Changed() {
log(fmt.Sprintf("roles %q", s.tags))
}
return r.Input
})
mujica.FormItem(f, "terms", &s.terms, mujica.FormItemOptions[bool]{Label: g.t("Terms", "条款"),
Validate: func(v bool) string {
if !v {
return g.t("Accept the terms to continue.", "请先同意条款。")
}
return ""
}}, func() *ui.Element {
e := mujica.Checkbox(c, &s.terms, g.t("I accept the covenant of the masquerade", "我接受假面舞会的盟约"), mujica.CheckboxOptions{})
if e.Changed() {
log(fmt.Sprintf("terms %v", s.terms))
}
return e
})
}
func (g *gallery) formSuccess(c *ui.Context, log func(string)) {
s := &g.cForm
r := mujica.Result(c, mujica.ResultOptions{Kind: mujica.ResultSuccess, Title: g.t("Entry received", "报名已收到"),
Description: fmt.Sprintf(g.t("%s, your debut on %s is on the ledger.", "%s,你在 %s 的首演已登记。"), s.name, s.debut.Format("2006-01-02")),
Actions: []string{g.t("New entry", "新的报名")}})
if r.Action == 0 {
*s = newFormSubmitDemo()
log("new entry")
}
}
func (g *gallery) formFailure(c *ui.Context, log func(string)) {
s := &g.cForm
r := mujica.Result(c, mujica.ResultOptions{Kind: mujica.ResultFailure, Title: g.t("Entry not sent", "报名未送达"), Description: s.failure,
Actions: []string{g.t("Retry", "重试"), g.t("Back to the form", "返回表单")}})
switch r.Action {
case 0:
s.phase = formEditing
s.st.Submit()
log("retry")
case 1:
s.phase = formEditing
log("back to the form")
}
}