Lift Framework example source code file (TimeZoneField.scala)

This example Lift Framework source code file (TimeZoneField.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, ownertype, ownertype, record, string, string, stringfield, stringtypedfield, systemv, timezonefield, timezonetypedfield, timezonetypedfield, util

The Lift Framework TimeZoneField.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.TimeZone
import xml._

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


object TimeZoneField {
  lazy val timeZoneList: List[(String, String)] = TimeZone.getAvailableIDs.toList.
    filter(!_.startsWith("SystemV/")).
    filter(!_.startsWith("Etc/")).filter(_.length > 3).
    sortWith(_ < _).map(tz => (tz, tz))
}

trait TimeZoneTypedField extends StringTypedField {
  /** 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)] =
      if (optional_?) ("", emptyOptionLabel)::TimeZoneField.timeZoneList else TimeZoneField.timeZoneList

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

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

class TimeZoneField[OwnerType <: Record[OwnerType]](rec: OwnerType)
  extends StringField(rec, 32) with TimeZoneTypedField {

  override def defaultValue = TimeZone.getDefault.getID

  def isAsTimeZone: TimeZone = TimeZone.getTimeZone(value) match {
    case null => TimeZone.getDefault
    case x => x
  }
}

class OptionalTimeZoneField[OwnerType <: Record[OwnerType]](rec: OwnerType)
  extends OptionalStringField(rec, 32) with TimeZoneTypedField