net.liftweb.builtin.snippet.WithParam.scala Maven / Gradle / Ivy
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/*
* Copyright 2009-2011 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 builtin
package snippet
import scala.xml._
import scala.collection.immutable.{Map}
import net.liftweb.http._
import net.liftweb.common._
object WithParamVar extends RequestVar[Map[String, NodeSeq]](Map.empty)
/**
* Evaluates the body and stores it in the WithParam RequestVar map.
* This map is used in builtin.snippet.Surround to bind content to named sections.
* Note that the WithParam snippet is also mapped to "bind-at"
*/
object WithParam extends DispatchSnippet {
def dispatch : DispatchIt = {
case _ => render _
}
/**
* Evaluates the body and stores it in the WithParam RequestVar map.
* This map is used in builtin.snippet.Surround to bind content to named sections.
* Note that the WithParam snippet is also mapped to "bind-at"
*/
def render(kids: NodeSeq) : NodeSeq = {
(for {
ctx <- S.session ?~ ("FIX"+"ME: Invalid session")
req <- S.request ?~ ("FIX"+"ME: Invalid request")
} yield {
val name: String = S.attr("name") openOr "main"
val body = ctx.processSurroundAndInclude(PageName.get, kids)
WithParamVar.atomicUpdate(_ + (name -> body))
NodeSeq.Empty
}) match {
case Full(x) => x
case Empty => Comment("FIX"+ "ME: session or request are invalid")
case Failure(msg, _, _) => Comment(msg)
}
}
}