1 files changed, 39 insertions, 2 deletions
diff --git a/doc-tool/src/dotty/tools/dottydoc/staticsite/DefaultParams.scala b/doc-tool/src/dotty/tools/dottydoc/staticsite/DefaultParams.scala
index d64ebcd90..5bed79869 100644
--- a/doc-tool/src/dotty/tools/dottydoc/staticsite/DefaultParams.scala
+++ b/doc-tool/src/dotty/tools/dottydoc/staticsite/DefaultParams.scala
@@ -2,17 +2,19 @@ package dotty.tools
 package dottydoc
 package staticsite
 
-import java.util.{ List => JList }
 import model.{ Entity, NonEntity }
 
+import java.util.{ HashMap, List => JList, Map => JMap }
+import scala.collection.JavaConverters._
+
 case class DefaultParams(
   docs: JList[_],
   page: PageInfo,
   site: SiteInfo,
+  sidebar: Sidebar,
   entity: Entity = NonEntity
 ) {
   import model.java._
-  import scala.collection.JavaConverters._
 
   def toMap: Map[String, AnyRef] = Map(
     "docs" -> docs,
@@ -29,6 +31,8 @@ case class DefaultParams(
       "project" -> site.projectTitle
     ).asJava,
 
+    "sidebar" -> sidebar.titles.asJava,
+
     "entity" -> entity.asJava()
   )
 
@@ -48,3 +52,36 @@ case class PageInfo(url: String, date: String = "") {
 }
 
 case class SiteInfo(baseurl: String, projectTitle: String, posts: Array[BlogPost])
+
+case class Sidebar(titles: List[Title])
+
+object Sidebar {
+  def apply(map: HashMap[String, AnyRef]): Option[Sidebar] = Option(map.get("sidebar")).map {
+    case list: JList[JMap[String, AnyRef]] @unchecked if !list.isEmpty =>
+      new Sidebar(list.asScala.map(Title.apply).flatMap(x => x).toList)
+    case _ => Sidebar.empty
+  }
+
+  def empty: Sidebar = Sidebar(Nil)
+}
+
+case class Title(title: String, url: Option[String], subsection: List[Title])
+
+object Title {
+  def apply(map: JMap[String, AnyRef]): Option[Title] = {
+    val title = Option(map.get("title")).collect {
+      case s: String => s
+    }
+    val url = Option(map.get("url")).collect {
+      case s: String => s
+    }
+    val subsection = Option(map.get("subsection")).collect {
+      case xs: JList[JMap[String, AnyRef]] @unchecked =>
+        xs.asScala.map(Title.apply).toList.flatMap(x => x)
+    }.getOrElse(Nil)
+
+    title.map {
+      case title: String  => Title(title, url, subsection)
+    }
+  }
+}