Lift Framework example source code file (LocaleField.scala)

This example Lift Framework source code file (LocaleField.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Lift Framework tags/keywords

full, full, list, list, locale, localefield, localetypedfield, localetypedfield, ownertype, record, string, string, stringfield, typedfield, util

The Lift Framework LocaleField.scala source code

/*
 * Copyright 2007-2011 WorldWide Conferencing, LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.liftweb
package record
package field

import java.util.{Locale}
import xml._

import common._
import util._
import Helpers._
import http.{S, SHtml}
import S._


object LocaleField {
  lazy val localeList = Locale
    .getAvailableLocales.toList
    .sortWith(_.getDisplayName < _.getDisplayName)
    .map(lo => (lo.toString, lo.getDisplayName))
}

trait LocaleTypedField extends TypedField[String] {
  /** Build a list of string pairs for a select list. */
  def buildDisplayList: List[(String, String)]

  private def elem = SHtml.select(buildDisplayList, Full(valueBox.map(_.toString) openOr ""),
                                  locale => setBox(Full(locale))) % ("tabindex" -> tabIndex.toString)

  override def toForm: Box[NodeSeq] =
    uniqueFieldId match {
      case Full(id) => Full(elem % ("id" -> id))
      case _ => Full(elem)
    }
}

class LocaleField[OwnerType <: Record[OwnerType]](rec: OwnerType)
  extends StringField(rec, 16) with LocaleTypedField {

  override def defaultValue = Locale.getDefault.toString

  def isAsLocale: Locale = Locale.getAvailableLocales.filter(_.toString == value).toList match {
    case Nil => Locale.getDefault
    case x :: xs => x
  }

  def buildDisplayList: List[(String, String)] = LocaleField.localeList

}

class OptionalLocaleField[OwnerType <: Record[OwnerType]](rec: OwnerType)
  extends OptionalStringField(rec, 16) with LocaleTypedField {

  /** Label for the selection item representing Empty, show when this field is optional. Defaults to the empty string. */
  def emptyOptionLabel: String = ""

  def buildDisplayList: List[(String, String)] = ("", emptyOptionLabel)::LocaleField.localeList
}