net.liftweb.builtin.snippet.Surround.scala Maven / Gradle / Ivy
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/*
* 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 builtin
package snippet
import scala.xml._
import net.liftweb.http._
import net.liftweb.util._
import net.liftweb.common._
import Helpers._
object Surround extends DispatchSnippet {
def dispatch : DispatchIt = {
case _ => render _
}
def render(kids: NodeSeq) : NodeSeq =
(for {
ctx <- S.session ?~ ("FIX"+"ME: Invalid session")
} yield {
def eatDiv(in: NodeSeq): NodeSeq =
if (S.attr("eat").isDefined) in.flatMap {
case e: Elem => e.child
case n => n
} else in
WithParamVar.doWith(Map()) {
lazy val mainParam = (S.attr("at") openOr "main",
eatDiv(ctx.processSurroundAndInclude(PageName.get, kids)))
lazy val paramsMap = {
val q = mainParam // perform the side-effecting thing here
WithParamVar.get + q // WithParamVar is the side effects of processing the template
}
ctx.findAndMerge(S.attr("with"), paramsMap)
}
}) match {
case Full(x) => x
case Empty => Comment("FIX"+ "ME: session or request are invalid")
case Failure(msg, _, _) => Comment(msg)
}
}