fully impleemnted localelist dialog type

go.mod

@@ -14,6 +14,7 @@ require (
 	github.com/labstack/echo/v4 v4.13.4
 	github.com/labstack/gommon v0.4.2
 	github.com/sirupsen/logrus v1.9.3
+	golang.org/x/text v0.30.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
@@ -30,6 +31,5 @@ require (
 	golang.org/x/crypto v0.38.0 // indirect
 	golang.org/x/net v0.40.0 // indirect
 	golang.org/x/sys v0.33.0 // indirect
-	golang.org/x/text v0.25.0 // indirect
 	golang.org/x/time v0.11.0 // indirect
 )

go.sum

@@ -63,8 +63,8 @@ golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
 golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
-golang.org/x/text v0.25.0 h1:qVyWApTSYLk/drJRO5mDlNYskwQznZmkpV2c8q9zls4=
+golang.org/x/text v0.30.0 h1:yznKA/E9zq54KzlzBEAWn1NXSQ8DIp/NYMy88xJjl4k=
-golang.org/x/text v0.25.0/go.mod h1:WEdwpYrmk1qmdHvhkSTNPm3app7v4rsT8F2UD6+VHIA=
+golang.org/x/text v0.30.0/go.mod h1:yDdHFIX9t+tORqspjENWgzaCVXgk0yYnYuSZ8UzzBVM=
 golang.org/x/time v0.11.0 h1:/bpjEDfN9tkoN/ryeYHnv5hcMlc8ncjMcM4XBk5NWV0=
 golang.org/x/time v0.11.0/go.mod h1:CDIdPxbZBQxdj6cxyCIdrNogrJKMJ7pr37NYpMcMDSg=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=

ui/dialog.go

@@ -170,8 +170,13 @@ func (d *Dialog) Render(ctxt AmContext) (string, any, error) {
 		if fld.Required {
 			required = true // display the "required" blurb
 		}
-		if fld.Type == "password" { // clear all "password" fields as a security measure
+		switch fld.Type {
+		case "password": // clear all "password" fields as a security measure
 			d.Fields[i].Value = ""
+		case "localelist": // default locale to en-US if we don't have one
+			if d.Fields[i].Value == "" {
+				d.Fields[i].Value = "en-US"
+			}
 		}
 	}
 	ctxt.VarMap().Set("amsterdam_required", required)

ui/languages.txt

@@ -0,0 +1,150 @@
+ja-JP
+es-PE
+en
+es-PA
+sr-BA
+mk
+es-GT
+ar-AE
+no-NO
+sq-AL
+bg
+ar-IQ
+ar-YE
+hu
+pt-PT
+el-CY
+ar-QA
+mk-MK
+sv
+de-CH
+en-US
+fi-FI
+is
+cs
+en-MT
+sl-SI
+sk-SK
+it
+tr-TR
+zh
+th
+ar-SA
+no
+en-GB
+sr-CS
+lt
+ro
+en-NZ
+nn-NO
+lt-LT
+es-NI
+nl
+ga-IE
+fr-BE
+es-ES
+ar-LB
+ko
+fr-CA
+et-EE
+ar-KW
+sr-RS
+es-US
+es-MX
+ar-SD
+in-ID
+ru
+lv
+es-UY
+lv-LV
+iw
+pt-BR
+ar-SY
+hr
+et
+es-DO
+fr-CH
+hi-IN
+es-VE
+ar-BH
+en-PH
+ar-TN
+fi
+de-AT
+es
+nl-NL
+es-EC
+zh-TW
+ar-JO
+be
+is-IS
+es-CO
+es-CR
+es-CL
+ar-EG
+en-ZA
+th-TH
+el-GR
+it-IT
+ca
+hu-HU
+fr
+en-IE
+uk-UA
+pl-PL
+fr-LU
+nl-BE
+en-IN
+ca-ES
+ar-MA
+es-BO
+en-AU
+sr
+zh-SG
+pt
+uk
+es-SV
+ru-RU
+ko-KR
+vi
+ar-DZ
+vi-VN
+sr-ME
+sq
+ar-LY
+ar
+zh-CN
+be-BY
+zh-HK
+ja
+iw-IL
+bg-BG
+in
+mt-MT
+es-PY
+sl
+fr-FR
+cs-CZ
+it-CH
+ro-RO
+es-PR
+en-CA
+de-DE
+ga
+de-LU
+de
+es-AR
+sk
+ms-MY
+hr-HR
+en-SG
+da
+mt
+pl
+ar-OM
+tr
+el
+ms
+sv-SE
+da-DK
+es-HN

ui/templates.go

@@ -22,6 +22,7 @@ import (
 	"sync"
 	"time"
 	"unicode"
+	_ "unsafe" // HACK HACK HACK
 
 	"git.erbosoft.com/amy/amsterdam/config"
 	"github.com/CloudyKit/jet/v6"
@@ -30,6 +31,8 @@ import (
 	"github.com/biter777/countries"
 	"github.com/labstack/echo/v4"
 	log "github.com/sirupsen/logrus"
+	"golang.org/x/text/language"
+	"golang.org/x/text/language/display"
 )
 
 //go:embed views/*
@@ -38,6 +41,56 @@ var static_views embed.FS
 // views is the main Jet template repository.
 var views *jet.Set
 
+//go:embed languages.txt
+var knownLanguages string
+
+// Language is a type for a list of all supportred languages.
+type Language struct {
+	Tag  string // the BCP 47 tag, such as "en-US"
+	Name string // the human-readable name, like "American English"
+}
+
+// cachedLanguageList is the cached language list.
+var cachedLanguageList []Language = nil
+
+// languageListMutex controls access to internalGetLanguageList.
+var languageListMutex sync.Mutex
+
+// internalGetLanguageList is a wrapper around "allTags" that sorts it by language name.
+func internalGetLanguageList() []Language {
+	languageListMutex.Lock()
+	defer languageListMutex.Unlock()
+	if cachedLanguageList == nil {
+		langs := strings.Split(knownLanguages, "\n")
+		enNamer := display.English.Tags()
+		cachedLanguageList = make([]Language, 0, len(langs))
+		for _, l := range langs {
+			tag, err := language.Parse(l)
+			if err == nil {
+				cachedLanguageList = append(cachedLanguageList, Language{
+					Tag:  tag.String(),
+					Name: enNamer.Name(tag),
+				})
+			} else {
+				log.Errorf("*** PUKE on parsing language tag %s: %v", l, err)
+			}
+		}
+
+		slices.SortFunc(cachedLanguageList, func(a Language, b Language) int {
+			return strings.Compare(a.Name, b.Name)
+		})
+		log.Infof("internalGetLanguageList() loaded %d languages", len(cachedLanguageList))
+	}
+	return cachedLanguageList
+}
+
+// getLanguageList is a wrapper around the list of languages that can be added to the template context.
+func getLanguageList(a jet.Arguments) reflect.Value {
+	rc := internalGetLanguageList()
+	log.Infof("GetLanguageList() provides %d items", len(rc))
+	return reflect.ValueOf(rc)
+}
+
 // cachedCountryList is the cached country list after sorting.
 var cachedCountryList []countries.CountryCode = nil
 
@@ -170,6 +223,7 @@ func SetupTemplates() {
 	views.AddGlobal("AmsterdamCopyright", config.AMSTERDAM_COPYRIGHT)
 	views.AddGlobal("GlobalConfig", config.GlobalConfig)
 	views.AddGlobalFunc("GetCountryList", getCountryList)
+	views.AddGlobalFunc("GetLanguageList", getLanguageList)
 	views.AddGlobalFunc("GetMonthList", getMonthList)
 	views.AddGlobalFunc("MakeIntRange", makeIntRange)
 	views.AddGlobalFunc("MakeYearRange", makeYearRange)
@@ -179,8 +233,9 @@ func SetupTemplates() {
 		return reflect.ValueOf(CapitalizeString(s))
 	})
 
-	// preload the country list in the background
+	// preload the lists in the background
 	go internalGetCountryList()
+	go internalGetLanguageList()
 }
 
 // TemplateRenderer is the Renderer instance set into the Echo context at creation time, to render Jet templates.

ui/views/dialog.jet

@@ -130,9 +130,12 @@
                                 {{ .Caption }}{{ if .Subcaption != "" }} {{ .Subcaption }}{{ end }}
                                 {{ if .Required }}<span class="text-red-600">*</span>{{ end }}
                             </label>
+                            {{ v := .Value }}
                             <select id="{{ .Name }}" name="{{ .Name }}" {{ if .Required }}required{{ end }}
                                     class="flex-1 max-w-md px-3 py-2 border border-gray-300 rounded focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
-                                <option value="XX">Unknown</option>{* TODO *}
+                                {{ range GetLanguageList() }}
+                                    <option value="{{ .Tag }}" {{ if .Tag == v }}selected{{ end }}>{{ .Name }}</option>
+                                {{ end }}
                             </select>
                         </div>
                     {{ else if .Type == "tzlist" }}