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/*
* Copyright 2010 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 example {
package lib {
import _root_.net.liftweb._
import http._
import js._
import JsCmds._
import common._
import json._
import textile._
import scala.xml._
/**
* Respond to JSON requests in a stateless dispatch
*/
object StatelessJson {
def init() {
// register the JSON handler
LiftRules.statelessDispatchTable.append {
case r @ Req("stateless_json_call" :: Nil, _, PostRequest) => () => handleJson(r)
}
}
implicit def iterableToBox[X](in: Iterable[X]): Box[X] = in.toList.headOption
def handleJson(req: Req): Box[LiftResponse] =
for {
json <- req.json // get the JSON
JObject(List(JField("command", JString(cmd)), JField("params", JString(params)))) <- json // extract the command
} yield JavaScriptResponse(SetHtml("json_result",cmd match { // build the response
case "show" => Text(params)
case "textile" => TextileParser.toHtml(params, Empty)
case "count" => Text(params.length+" Characters")
case x => <b>Problem... didn't handle JSON message {x}</b>
}))
}
}
}
}
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