Lift Framework example source code file (Loc.scala)
The Lift Framework Loc.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 sitemap
import net.liftweb.http._
import net.liftweb.common._
import net.liftweb.util._
import Helpers._
import auth._
import scala.xml.{NodeSeq, Text}
/**
* A menu location
*/
trait Loc[T] {
def name: String
def link: Loc.Link[T]
def text: Loc.LinkText[T]
def overrideValue: Box[T] = Empty
object requestValue extends RequestVar[Box[T]](defaultRequestValue) {
override val __nameSalt = randomString(10)
}
/**
* Override this if the default request value should
* be something other than Empty
*/
protected def defaultRequestValue: Box[T] = Empty
/**
* When the menu item is displayed, what CSS class do we add to the
* node?
*/
def cssClassForMenuItem: Box[String] = cacheCssClassForMenuItem.map(_())
/**
* By default, this lazy val looks for the MenuCssClass LocParam and
* uses it.
*/
protected lazy val cacheCssClassForMenuItem: Box[() => String] =
allParams.flatMap {
case a: Loc.MenuCssClass => List(a)
case _ => Nil
}.headOption.map(_.cssClass.func)
/**
* Given a value calculate the HREF to this item
*/
def calcHref(in: T): String = appendQueryParameters(link.createPath(in),
Full(in))
/**
* Calculate HREF to this item using currentValue
*/
def calcDefaultHref: String = currentValue.map(p => link.createPath(p)).toOption.
map(path => appendQueryParameters(path, currentValue)).getOrElse("")
def defaultValue: Box[T]
/**
* The value of the Loc based on params (either Loc.Value or Loc.CalcValue)
*/
def paramValue: Box[T] = calcValue.flatMap(f => f()) or staticValue
private lazy val staticValue: Box[T] = allParams.collect{case Loc.Value(v: T) => v}.headOption
private lazy val calcValue: Box[() => Box[T]] = params.collect{case Loc.CalcValue(f: Function0[Box[T]]) => f}.headOption
/**
* Calculate the Query parameters
*/
def queryParameters(what: Box[T]): List[(String, String)] =
addlQueryParams.flatMap(_()) :::
calcQueryParams.flatMap(_(what))
protected def appendQueryParams(what: T)(nodeSeq: NodeSeq): NodeSeq =
Text(appendQueryParameters(nodeSeq.text, Full(what)))
protected def appendQueryParameters(in: String, what: Box[T]) =
Helpers.appendQueryParameters(in, queryParameters(what))
private lazy val addlQueryParams: List[() => List[(String, String)]] =
params.collect{case lp: Loc.QueryParameters => lp.f}
private lazy val calcQueryParams: List[Box[T] => List[(String, String)]] =
params.collect{case lp: Loc.LocQueryParameters[T] => lp.f}
/**
* The current value of the cell: overrideValue or requestValue.is or defaultValue oe paramValue
*/
def currentValue: Box[T] = overrideValue or requestValue.is or defaultValue or paramValue
def childValues: List[T] = Nil
def params: List[Loc.LocParam[T]]
def allParams: List[Loc.AnyLocParam] =
(params.asInstanceOf[List[Loc.AnyLocParam]]) :::
parentParams :::
siteMap.globalParams
private def parentParams: List[Loc.AnyLocParam] =
_menu match {
case null => Nil
case menu => menu._parent match {
case Full(parentMenu: Menu) =>
if (!params.collect{case i: Loc.UseParentParams => true}.isEmpty) {
parentMenu.loc.allParams.asInstanceOf[List[Loc.LocParam[Any]]]
} else {
Nil
}
case _ => Nil
}
}
private lazy val _placeHolder_? = allParams.contains(Loc.PlaceHolder)
def placeHolder_? : Boolean = _placeHolder_?
private lazy val _hideIfNoKids_? = allParams.contains(Loc.HideIfNoKids)
def hideIfNoKids_? = placeHolder_? || _hideIfNoKids_?
def siteMap: SiteMap = _menu.siteMap
def createDefaultLink: Option[NodeSeq] =
currentValue.flatMap(p => link.createLink(p)).toOption.
map(ns => Text(appendQueryParameters(ns.text, currentValue)))
def createLink(in: T): Option[NodeSeq] = link.createLink(in).toOption.
map(ns => Text(appendQueryParameters(ns.text, Full(in))))
override def toString = "Loc("+name+", "+link+", "+text+", "+params+")"
type LocRewrite = Box[PartialFunction[RewriteRequest, (RewriteResponse, T)]]
def rewrite: LocRewrite = Empty
def rewritePF: Box[LiftRules.RewritePF] = rewrite.map(
rw =>
new NamedPartialFunction[RewriteRequest, RewriteResponse] {
def functionName = rw match {
case rw: NamedPartialFunction[_, _] => rw.functionName
case _ => "Unnamed"
}
def isDefinedAt(in: RewriteRequest) = rw.isDefinedAt(in)
def apply(in: RewriteRequest): RewriteResponse = {
val (ret, param) = rw.apply(in)
requestValue.set(Full(param))
ret
}
}
)
type SnippetTest = PartialFunction[(String, Box[T]), NodeSeq => NodeSeq]
def snippets: SnippetTest = Map.empty
/**
* Is the Loc marked as Stateless (this will force rendering of
* the page into stateless mode)
*/
def stateless_? : Boolean =
if (Props.devMode) (calcStateless() || reqCalcStateless())
else (_frozenStateless || reqCalcStateless())
/**
* A lazy val used to track statelessness for non-dev mode.
* By default, it calls calcStateless().
*/
protected lazy val _frozenStateless = calcStateless()
/**
* The method to calculate if this Loc is stateless. By default
* looks for the Loc.Stateless Param
*/
protected def calcStateless(): Boolean = allParams.find {
case Loc.Stateless => true
case _ => false
}.isDefined
/**
* Find the stateless calculation Loc params
*/
protected def findStatelessCalc: (Box[Loc.CalcStateless], Box[Loc.CalcParamStateless[T]]) = (allParams.collect {
case v @ Loc.CalcStateless(_) => v
}.headOption,
allParams.collect {
case v @ Loc.CalcParamStateless(_) => v
}.headOption)
/**
* The cached Loc params
*/
protected lazy val _foundStatelessCalc: (Box[Loc.CalcStateless], Box[Loc.CalcParamStateless[T]]) = findStatelessCalc
protected def foundStatelessCalc: (Box[Loc.CalcStateless], Box[Loc.CalcParamStateless[T]]) =
if (Props.devMode) findStatelessCalc else _foundStatelessCalc
/**
* run the stateless calculation
*/
protected def reqCalcStateless(): Boolean = {
val (np, param) = foundStatelessCalc
(np.map(_.f()) or param.map(_.f(currentValue))) openOr false
}
lazy val calcSnippets: SnippetTest = {
def buildPF(in: Loc.Snippet): PartialFunction[String, NodeSeq => NodeSeq] = {
new PartialFunction[String, NodeSeq => NodeSeq] {
def isDefinedAt(s: String) = s == in.name
def apply(s: String): NodeSeq => NodeSeq = {
if (isDefinedAt(s)) in.func
else throw new MatchError()
}
}
}
val singles = (
allParams.flatMap{ case v: Loc.Snippet => Some(v); case _ => None }.toList.map(buildPF) :::
allParams.flatMap{ case v: Loc.LocSnippets => Some(v); case _ => None }.toList
)
if (singles.isEmpty) Map.empty
else {
val func: PartialFunction[String, NodeSeq => NodeSeq] = singles match {
case pf :: Nil => pf
case pfs => pfs.reduceLeft[PartialFunction[String, NodeSeq => NodeSeq]](_ orElse _)
}
new SnippetTest {
def isDefinedAt(in: (String, Box[T])): Boolean = func.isDefinedAt(in._1)
def apply(in: (String, Box[T])): NodeSeq => NodeSeq = func.apply(in._1)
}
}
}
def snippet(name: String): Box[NodeSeq => NodeSeq] = {
val test = (name, currentValue)
if ((snippets orElse calcSnippets).isDefinedAt(test)) Full((snippets orElse calcSnippets)(test))
else Empty
}
protected object accessTestRes extends RequestVar[Either[Boolean, Box[() => LiftResponse]]](_testAccess) {
override val __nameSalt = randomString(10)
}
def testAccess: Either[Boolean, Box[() => LiftResponse]] = accessTestRes.is
protected def _testAccess: Either[Boolean, Box[() => LiftResponse]] = {
def testParams(what: List[Loc.LocParam[T]]): Either[Boolean, Box[() => LiftResponse]] = what match {
case Nil => Left(true)
case Loc.If(test, msg) :: xs => if (!test()) Right(Full(msg)) else testParams(xs)
case Loc.IfValue(test, msg) :: xs => if (!test(currentValue)) Right(Full(msg)) else testParams(xs)
case Loc.Unless(test, msg) :: xs => if (test()) Right(Full(msg)) else testParams(xs)
case Loc.UnlessValue(test, msg) :: xs => if (test(currentValue)) Right(Full(msg)) else testParams(xs)
case Loc.TestAccess(func) :: xs =>
func() match {
case Full(resp) => Right(Full(() => resp))
case _ => testParams(xs)
}
case Loc.TestValueAccess(func) :: xs =>
func(currentValue) match {
case Full(resp) => Right(Full(() => resp))
case _ => testParams(xs)
}
case x :: xs => testParams(xs)
}
testParams(allParams) match {
case Left(true) => _menu.testParentAccess
case x => x
}
}
def earlyResponse: Box[LiftResponse] = {
def early(what: List[Loc.LocParam[T]]): Box[LiftResponse] = what match {
case Nil => Empty
case Loc.EarlyResponse(func) :: xs =>
func() match {
case Full(r) => Full(r)
case _ => early(xs)
}
case x :: xs => early(xs)
}
early(allParams)
}
/**
* This method can be overridden to provide a template for this Loc
*/
def calcTemplate: Box[NodeSeq] = Empty
/**
* The first Loc.Template or Loc.ValueTemplate in the param list.
*/
def paramTemplate: Box[NodeSeq] =
allParams.flatMap {
case Loc.Template(f) => Some(f());
case Loc.ValueTemplate(f) => Some(f(currentValue));
case Loc.TemplateBox(f) => f()
case Loc.ValueTemplateBox(f) => f(currentValue)
case _ => None
}.headOption
/**
* The template assocaited with this Loc, if any. Any Loc.Template
* or Loc.ValueTemplate parameter will take precedence over a value returned
* by the calcTemplate method.
*/
def template: Box[NodeSeq] = paramTemplate or calcTemplate
/**
* The first Loc.Title in the param list.
*/
lazy val paramTitle: Box[T => NodeSeq] =
allParams.flatMap {
case Loc.Title(f) => Some(f);
case _ => None
}.headOption
/**
* The title to be displayed for the value associated with this Loc.
* Any Loc.Title parameter will take precedence over the
* value returned by the linkText method.
*/
def title(in: T): NodeSeq = paramTitle.map(_.apply(in)) openOr linkText(in)
/**
* The title of the location given the current value associated with this Loc.
* If no current value is available, this will use the name of this Loc
* as the title.
*/
def title: NodeSeq = currentValue.map(title _) openOr Text(name)
/**
* The link text to be displayed for a value of type T
*/
def linkText(in: T): NodeSeq = text.text(in)
/**
* The title of the location given the current value associated with this Loc
*/
def linkText: Box[NodeSeq] = currentValue.map(linkText _)
private var _menu: Menu = _
private[sitemap] def menu_=(m: Menu) {
_menu = m
m.siteMap.addLoc(this)
}
def menu = _menu
private def testAllParams(params: List[Loc.LocParam[T]], req: Req): Boolean = {
params.forall {
case Loc.Test(test) => test(req)
case _ => true
}
}
def doesMatch_?(req: Req): Boolean = {
(if (link.isDefinedAt(req)) {
link(req) match {
case Full(x) if testAllParams(allParams, req) => x
case Full(x) => false
case x => x.openOr(false)
}
} else false) && currentValue.isDefined
// the loc only matches if we've got a current value
}
def breadCrumbs: List[Loc[_]] = _menu.breadCrumbs ::: List(this)
def buildKidMenuItems(kids: Seq[Menu]): List[MenuItem] = {
kids.toList.flatMap(_.loc.buildItem(Nil, false, false)) ::: supplimentalKidMenuItems
}
def supplimentalKidMenuItems: List[MenuItem] =
for {
p <- childValues
l <- link.createLink(p).map(appendQueryParams(p))
} yield MenuItem(
text.text(p),
l, Nil, false, false,
allParams.flatMap {
case v: Loc.LocInfo[_] => List(v())
case _ => Nil
}
)
def buildMenu: CompleteMenu = {
CompleteMenu(_menu.buildUpperLines(_menu, _menu, buildKidMenuItems(_menu.kids)))
}
private[liftweb] def buildItem(kids: List[MenuItem], current: Boolean, path: Boolean): Box[MenuItem] =
(calcHidden(kids), testAccess) match {
case (false, Left(true)) => {
for {
p <- currentValue
t <- link.createLink(p).map(appendQueryParams(p))
} yield new MenuItem(
text.text(p),
t, kids, current, path,
allParams.flatMap {
case v: Loc.LocInfo[_] => List(v())
case _ => Nil
},
placeHolder_?, this
)
}
case _ => Empty
}
protected def calcHidden(kids: List[MenuItem]) = hidden || (hideIfNoKids_? && kids.isEmpty)
private lazy val _hidden = allParams.contains(Loc.Hidden)
def hidden = _hidden
private lazy val groupSet: Set[String] =
Set(allParams.flatMap{case s: Loc.LocGroup => s.group case _ => Nil} :_*)
def inGroup_?(group: String): Boolean = groupSet.contains(group)
def init() {
params.foreach(_ onCreate(this))
}
}
trait ConvertableLoc[T] {
self: Loc[T] =>
/**
* Converts the String to T that can then be sent to
* the Loc in createLink
*/
def convert(str: String): Box[T]
}
/**
* The Loc companion object, complete with a nice constructor
*/
object Loc {
type FailMsg = () => LiftResponse
/**
* Create a Loc (Location) instance
*
* @param name -- the name of the location. This must be unique across your entire sitemap.
* It's used to look up a menu item in order to create a link to the menu on a page.
* @param link -- the Link to the page
* @param text -- the text to display when the link is displayed
* @param params -- access test, title calculation, etc.
*/
def apply(name: String, link: Link[Unit], text: LinkText[Unit], params: LocParam[Unit]*): Loc[Unit] = UnitLoc(name, link, text, params.toList)
def apply(name: String, link: Link[Unit], text: LinkText[Unit], params: List[LocParam[Unit]]): Loc[Unit] = UnitLoc(name, link, text, params)
private final case class UnitLoc(
override val name: String,
override val link: Link[Unit],
override val text: LinkText[Unit],
override val params: List[LocParam[Unit]]
) extends Loc[Unit] {
override def defaultValue: Box[Unit] = Full(())
init()
}
case class DataLoc[T](
override val name: String,
override val link: Link[T],
override val text: LinkText[T],
override val defaultValue: Box[T],
xparams: LocParam[T]*
) extends Loc[T] {
override val params = xparams.toList
init()
}
/**
* Algebraic data type for parameters that modify handling of a Loc
* in a SiteMap
*/
trait LocParam[-T] {
def onCreate(loc: Loc[_]){
}
}
/**
* A type alias for LocParam instances that are applicable to any Loc
*/
type AnyLocParam = LocParam[Any]
/**
* Indicates that the path denominated by Loc requires HTTP authentication
* and only a user assigned to this role or to a role that is child-of this role
* can access it.
*/
case class HttpAuthProtected(role: (Req) => Box[Role]) extends AnyLocParam {
override def onCreate(loc: Loc[_]) {
LiftRules.httpAuthProtectedResource.append(
new LiftRules.HttpAuthProtectedResourcePF() {
def isDefinedAt(in: Req) = in.path.partPath == loc.link.uriList
def apply(in: Req): Box[Role] = role(in)
}
)
}
}
/**
* Allows you to generate an early response for the location rather than
* going through the whole Lift XHTML rendering pipeline
*/
case class EarlyResponse(func: () => Box[LiftResponse]) extends AnyLocParam
/**
* Tests to see if the request actually matches the requirements for access to
* the page. For example, if a parameter is missing from the request, this
* is a good way to restrict access to the page.
*/
case class Test(test: Req => Boolean) extends AnyLocParam
/**
* If the test returns True, the page can be accessed, otherwise,
* the result of FailMsg will be sent as a response to the browser.
* If the Loc cannot be accessed, it will not be displayed in menus.
*
* @param test -- the function that tests access to the page
* @param failMsg -- what to return the the browser (e.g., 304, etc.) if
* the page is accessed.
*/
case class If(test: () => Boolean, failMsg: FailMsg) extends AnyLocParam
case class IfValue[T](test: Box[T] => Boolean, failMsg: FailMsg) extends LocParam[T]
/**
* MenuCssClass is used to add css to the Menu node. The css allows for
* replacing menu with an icon and other super-fun and helpful things.
* cssClass is a StringFunc which can either be a String constant or
* a Function that returns a String. Thus, you can compute the
* css based on the current state or you can have a constant. Syntactically
* you can use either:
* <pre>
* MenuCssClass("foobar")
* MenuCssClass(() => calculateCssForMyMenuItem())
* </pre>
*/
case class MenuCssClass(cssClass: StringFunc) extends AnyLocParam
/**
* Unless the test returns True, the page can be accessed, otherwise,
* the result of FailMsg will be sent as a response to the browser.
* If the Loc cannot be accessed, it will not be displayed in menus.
*
* @param test -- the function that tests access to the page
* @param failMsg -- what to return the the browser (e.g., 304, etc.) if
* the page is accessed.
*/
case class Unless(test: () => Boolean, failMsg: FailMsg) extends AnyLocParam
case class UnlessValue[T](test: Box[T] => Boolean, failMsg: FailMsg) extends LocParam[T]
/**
* Allows extra access testing for a given menu location such that
* you can generically return a response during access control
* testing
*/
case class TestAccess(func: () => Box[LiftResponse]) extends AnyLocParam
case class TestValueAccess[T](func: Box[T] => Box[LiftResponse]) extends LocParam[T]
/**
* Allows a user to specify a template based upon a function from the current
* value encapsulated in the Loc
*/
case class Template(template: () => NodeSeq) extends AnyLocParam
case class ValueTemplate[T](template: Box[T] => NodeSeq) extends LocParam[T]
/**
* Allows a user to specify a template based upon a function from the current
* value encapsulated in the Loc. Allow the return of Box[NodeSeq] so that it's more
* friendly to Templates.
*/
case class TemplateBox(template: () => Box[NodeSeq]) extends AnyLocParam
case class ValueTemplateBox[T](template: Box[T] => Box[NodeSeq]) extends LocParam[T]
/**
* This LocParam may be used to specify a function that calculates a title for the page
* based upon the current value encapsulated by this Loc.
*/
case class Title[T](title: T => NodeSeq) extends LocParam[T]
/**
* If the Loc is in a group (or groups) like "legal" "community" etc.
* the groups can be specified and recalled at the top level
*/
case class LocGroup(group: String*) extends AnyLocParam
/**
* Calculate the value for the Loc. This is useful for parameterized
* menus. It allows you to calculate the value of the Loc.
*/
case class CalcValue[T](func: () => Box[T]) extends LocParam[T]
/**
* The value of Loc
*/
case class Value[T](value: T) extends LocParam[T]
/**
* An extension point for adding arbitrary lazy values to a Loc.
*/
trait LocInfo[X] extends AnyLocParam {
def apply(): Box[() => X]
}
/**
* A single snippet that's assocaited with a given location... the snippet
* name and the snippet function'
*/
class Snippet(val name: String, _func: => NodeSeq => NodeSeq) extends AnyLocParam {
/**
* The NodeSeq => NodeSeq function
*/
def func: NodeSeq => NodeSeq = _func
}
object Snippet {
/**
* A trait that does nothing other than allow the disabiguation of two different call-by-name parameters
* for apply()
*/
trait CallByNameDispatchSnippet
/**
* Vend the trait that does nothing other than allow the disabiguation of two different call-by-name parameters
* for apply()
*/
implicit def vendCallByNameDispatchSnippet: CallByNameDispatchSnippet = new CallByNameDispatchSnippet {}
/**
* Build a Loc.Snippet instance out of a name and a DispatchSnippet (or StatefulSnippet, LiftScreen or Wizard).
* The "render" method will be invoked on the Dispatch snippet
*/
def apply(name: String, snippet: => DispatchSnippet)(implicit disambiguate: CallByNameDispatchSnippet): Snippet =
new Snippet(name, ns => snippet.dispatch("render")(ns)) // Issue #919
/**
* Build a Loc.Snippet instance for a given name and a function. Note that the function is call-by-name
* so that it will be created each time it's used. This is useful for CSS Selector Transforms
*/
def apply(name: String, func: => NodeSeq => NodeSeq): Snippet = new Snippet(name, func)
def unapply(in: Snippet): Option[(String, NodeSeq => NodeSeq)] = Some(in.name -> in.func)
}
/**
* Allows you to create a handler for many snippets that are associated with
* a Loc
*/
trait LocSnippets extends PartialFunction[String, NodeSeq => NodeSeq] with AnyLocParam
/**
* If this parameter is included, the item will not be visible in the menu, but
* will still be accessable.
*/
case object Hidden extends AnyLocParam
/**
* If this is a submenu, use the parent Loc's params
*/
case class UseParentParams() extends AnyLocParam
/**
* Calculate additional query parameters to add as a query
* string to the Loc
*/
case class QueryParameters(f: () => List[(String, String)]) extends AnyLocParam
/**
* Calculate additional query parameters to add as a query
* string to the Loc
*/
case class LocQueryParameters[T](f: Box[T] => List[(String, String)]) extends LocParam[T]
/**
* If the Loc has no children, hide the Loc itself
*/
case object HideIfNoKids extends AnyLocParam
/**
* Is the Loc a stateless Loc... it will be served
* in stateless mode
*/
case object Stateless extends AnyLocParam
/**
* The Loc does not represent a menu itself, but is the parent menu for
* children (implies HideIfNoKids)
*/
case object PlaceHolder extends AnyLocParam
/**
* Extension point for user-defined LocParam instances.
*/
trait UserLocParam[-T] extends LocParam[T]
/**
* A function that calculates the statelessness of the Loc for the given request
*/
case class CalcStateless(f: () => Boolean) extends AnyLocParam
/**
* A function that calculates the statelessness of the Loc for the given request
* with the parameterized type passed into the function
*/
case class CalcParamStateless[-T](f: Box[T] => Boolean) extends LocParam[T]
/**
* A subclass of LocSnippets with a built in dispatch method (no need to
* implement isDefinedAt or apply... just
* def dispatch: PartialFunction[String, NodeSeq => NodeSeq]
*/
trait DispatchLocSnippets extends LocSnippets {
def dispatch: PartialFunction[String, NodeSeq => NodeSeq]
def isDefinedAt(n: String) = dispatch.isDefinedAt(n)
def apply(n: String) = dispatch.apply(n)
}
/**
* A function that can be used to calculate the link text from the current
* value encapsulated by the Loc.
*/
case class LinkText[-T](text: T => NodeSeq)
/**
* The companion object to LinkText that contains some helpful implicit conversion
*/
object LinkText {
implicit def nodeSeqToLinkText[T](in: => NodeSeq): LinkText[T] = LinkText[T](T => in)
implicit def strToLinkText[T](in: => String): LinkText[T] = LinkText(T => Text(in))
}
/**
* This defines the Link to the Loc.
*
* @param uriList -- the URL to match
*
* @param matchHead_? -- false -- absolute match. true -- match anything
* that begins with the same path. Useful for opening a set of directories
* (for example, help pages)
*/
class Link[-T](val uriList: List[String], val matchHead_? : Boolean) extends PartialFunction[Req, Box[Boolean]] {
def this(b: List[String]) = this(b, false)
def isDefinedAt(req: Req): Boolean = {
if (matchHead_?) req.path.partPath.take(uriList.length) == uriList
else uriList == req.path.partPath
}
/**
* Is the Loc external
*/
def external_? = false
def apply(in: Req): Box[Boolean] = {
if (isDefinedAt(in)) Full(true)
else throw new MatchError("Failed for Link "+uriList)
}
/**
* Override this method to modify the uriList with data from the Loc's value
*/
def pathList(value: T): List[String] = uriList
/**
* Creates a string representation of the path to the Loc.
*/
def createPath(value: T): String = {
val path: List[String] = pathList(value).map(Helpers.urlEncode)
if (matchHead_?) {
path.mkString("/", "/", "/")
} else if (SiteMap.rawIndex_? && path == List("index")) {
"/"
} else if (path.length > 1 && path.last == "index") {
path.dropRight(1).mkString("/", "/", "/")
} else {
path.mkString("/", "/", "")
}
}
/**
* Returns the value created by createPath wrapped in a boxed scala.xml.Text element.
* NOTE: This does not create a clickable HTML link on its own!
*/
def createLink(value: T): Box[NodeSeq] = Full(Text(createPath(value)))
}
object Link {
def apply(urlLst: List[String], matchHead_? : Boolean, url: String) = {
new Link[Unit](urlLst, matchHead_?) {
override def createLink(value: Unit): Box[NodeSeq] = Full(Text(url))
}
}
implicit def strLstToLink(in: Seq[String]): Link[Unit] = new Link[Unit](in.toList)
implicit def strPairToLink(in: (Seq[String], Boolean)): Link[Unit] = new Link[Unit](in._1.toList, in._2)
}
object ExtLink {
def apply(url: String) = new Link[Unit](Nil, false) {
override def createLink(value: Unit): Box[NodeSeq] = Full(Text(url))
/**
* Is the Loc external
*/
override def external_? = true
}
}
// @deprecated def alwaysTrue(a: Req) = true
// @deprecated def retString(toRet: String)(other: Seq[(String, String)]) = Full(toRet)
implicit def strToFailMsg(in: => String): FailMsg = () => {
RedirectWithState(
LiftRules.siteMapFailRedirectLocation.mkString("/", "/", ""),
RedirectState(Empty, in -> NoticeType.Error)
)
}
implicit def strFuncToFailMsg(in: () => String): FailMsg = strToFailMsg(in())
implicit def redirectToFailMsg(in: => RedirectResponse): FailMsg = () => in
}
case class CompleteMenu(lines: Seq[MenuItem]) {
lazy val breadCrumbs: Seq[MenuItem] = lines.flatMap(_.breadCrumbs)
}
case class MenuItem(text: NodeSeq, uri: NodeSeq, kids: Seq[MenuItem],
current: Boolean,
path: Boolean,
info: List[Box[() => _]]) {
private var _placeholder = false
def placeholder_? = _placeholder
private var _cssClass: Box[String] = Empty
def cssClass: Box[String] = _cssClass
def this(text: NodeSeq, uri: NodeSeq, kids: Seq[MenuItem],
current: Boolean,
path: Boolean,
info: List[Box[() => _]],
ph: Boolean) = {
this(text, uri, kids, current, path, info)
_placeholder = ph
}
def this(text: NodeSeq, uri: NodeSeq, kids: Seq[MenuItem],
current: Boolean,
path: Boolean,
info: List[Box[() => _]],
ph: Boolean,
loc: Loc[_]) = {
this(text, uri, kids, current, path, info)
_placeholder = ph
_cssClass = loc.cssClassForMenuItem
}
def breadCrumbs: Seq[MenuItem] = {
if (!path) Nil
else this :: kids.toList.flatMap(_.breadCrumbs)
}
}
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