Lift Framework example source code file (NumericField.scala)

This example Lift Framework source code file (NumericField.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

box, box, full, full, jsnull, list, manifest, mytype, mytype, number, number, numerictypedfield, s, typedfield

The Lift Framework NumericField.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 net.liftweb.http.{S}
import net.liftweb.http.js._
import net.liftweb.util._
import net.liftweb.common._
import scala.reflect.Manifest
import scala.xml._
import S._
import Helpers._
import JE._

trait NumericTypedField[MyType] extends TypedField[MyType] {

  /** Augments genericSetFromAny with support for values of type Number (optionally wrapped in any of the usual suspects) */
  protected final def setNumericFromAny(in: Any, f: Number => MyType)(implicit m: Manifest[MyType]): Box[MyType] =
    in match {
      case     (n: Number) => setBox(Full(f(n)))
      case Some(n: Number) => setBox(Full(f(n)))
      case Full(n: Number) => setBox(Full(f(n)))
      case (n: Number)::_  => setBox(Full(f(n)))
      case _ => genericSetFromAny(in)
    }

  private def elem = S.fmapFunc((s: List[String]) => setFromAny(s)) {
    funcName => <input type="text" name={funcName} value={valueBox.map(_.toString) openOr ""} tabindex={tabIndex toString}/>
  }

  /**
   * Returns form input of this field
   */
  def toForm: Box[NodeSeq] =
    uniqueFieldId match {
      case Full(id) => Full(elem % ("id" -> id))
      case _ => Full(elem)
    }

  override def noValueErrorMessage = S.??("number.required")

  def asJs = valueBox.map(v => JsRaw(String.valueOf(v))) openOr JsNull

}