src/main/scala/net/datatables/DataTables.scala
author Tomas Zeman <tzeman@volny.cz>
Tue, 23 Apr 2013 10:36:04 +0200
changeset 108 ef4e3e0ef83f
parent 77 8f0eddd7aa85
permissions -rw-r--r--
84a94fa29a67504b Task/Project notifications

/*
 * Copyright 2012 Tomas Zeman <tzeman@volny.cz>
 *
 * 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.datatables

import fis.base.ui._
import net.liftweb.http._
import net.liftweb.http.js._
import net.liftweb.http.js.JE._
import net.liftweb.http.js.JsCmds._
import net.liftweb.http.js.jquery._
import net.liftweb.http.js.jquery.JqJE._
import net.liftweb.http.js.jquery.JqJsCmds._
import net.liftweb.json._
import net.liftweb.json.Extraction._
import net.liftweb.record.RecordHelpers._
import net.liftweb.sitemap.Loc.Snippet
import net.liftweb.util._
import net.liftweb.util.Helpers._
import net.tz.lift.snippet._
import scala.xml.NodeSeq

/**
 * datatables.net typesafe datatable.
 */
object DataTables {

  def init() {
    LiftRules.snippets.append {
      case List("datatables") => { _ => initHeader(loadTpl) }
    }
  }

  protected def loadTpl = 
    Templates(List("templates-hidden", "datatables")) openOr NodeSeq.Empty

  protected def initHeader: CssTr = {
    val rows = Props.getInt("datatables.rows") map { i =>
      SetExp(JsVar("$.fn.dataTable.defaults.iDisplayLength"), i) }
    val lang = Props.get("datatables.lang." + CurLanguage.getLanguage) map { l =>
      SetExp(JsVar("$.fn.dataTable.defaults.oLanguage.sUrl"), l) }
    "#datatables-defaults" #> Script((rows ++ lang) toSeq)
  }

  def onLoad(selector: String, opts: Options): NodeSeq = {
    val s = Script(JqOnLoad(jsRender(selector, opts)))
    <head>
      {s}
    </head>
  }

  def jsRender(selector: String, opts: Options): JsExp =
    JqId(selector) ~> fun(opts)

  private def fun(opts: Options): JsMember = 
    new JsRaw("dataTable(%s);".format(opt2js(opts).toJsCmd)) with JsMember

  private def opt2js(opts: Options): JsExp = {
    implicit val formats = DefaultFormats
    decompose(opts)
  }

  case class Options(oLanguage: Option[Language], aoColumnDefs: List[ColumnDef])
  {
    def lang(l: Language) = this.copy(oLanguage = Some(l))
    def col(c: ColumnDef) = this.copy(aoColumnDefs = c :: aoColumnDefs)
  }
  object Options extends Options(None, Nil)

  case class Language(sUrl: Option[String]) {
    def url(url: String) = this.copy(sUrl = Some(url))
  }
  object Language extends Language(None)

  case class ColumnDef(sType: Option[String], aTargets: List[Int]) {
    def dtype(t: String) = this.copy(sType = Some(t))
    def dtype(t: Symbol) = this.copy(sType = Some(t.name))
    def target(i: Int) = this.copy(aTargets = i :: aTargets)
  }
  object ColumnDef extends ColumnDef(None, Nil)

  val TYPE_EU_DATE = 'eu_date
}
// vim: set ts=2 sw=2 et: