Parentless page navigation

1 files changed, 29 insertions, 15 deletions

diff --git a/core/src/main/kotlin/resolvers/DefaultLocationProvider.kt b/core/src/main/kotlin/resolvers/DefaultLocationProvider.kt
index 5139b3c1..fb9ac6cd 100644
--- a/core/src/main/kotlin/resolvers/DefaultLocationProvider.kt
+++ b/core/src/main/kotlin/resolvers/DefaultLocationProvider.kt
@@ -9,10 +9,10 @@ import org.jetbrains.dokka.plugability.DokkaContext
 import org.jetbrains.dokka.plugability.single
 
 open class DefaultLocationProvider(
-    private val pageGraphRoot: PageNode,
+    private val pageGraphRoot: ModulePageNode,
     private val configuration: DokkaConfiguration,
     context: DokkaContext
-): LocationProvider { // TODO: cache
+) : LocationProvider { // TODO: cache
     private val extension = context.single(CoreExtensions.fileExtension)
 
     override fun resolve(node: PageNode, context: PageNode?): String = pathTo(node, context) + extension
@@ -22,14 +22,25 @@ open class DefaultLocationProvider(
         // Not found in PageGraph, that means it's an external link
         ExternalLocationProvider.getLocation(dri,
             configuration.passesConfigurations
-            .filter { passConfig -> platforms.toSet().contains(PlatformData(passConfig.analysisPlatform, passConfig.targets)) } // TODO: change targets to something better?
-            .flatMap { it.externalDocumentationLinks }.distinct()
+                .filter { passConfig ->
+                    platforms.toSet().contains(PlatformData(passConfig.analysisPlatform, passConfig.targets))
+                } // TODO: change targets to something better?
+                .flatMap { it.externalDocumentationLinks }.distinct()
         )
 
     override fun resolveRoot(node: PageNode): String = "../${pathTo(pageGraphRoot, node).removeSuffix(
-        PAGE_WITH_CHILDREN_SUFFIX)}"
+        PAGE_WITH_CHILDREN_SUFFIX
+    )}"
 
-    protected open fun findInPageGraph(dri: DRI, platforms: List<PlatformData>): PageNode? = pageGraphRoot.dfs { it.dri == dri }
+    private fun PageNode.parent() = pageGraphRoot.parentMap[this]
+
+    override fun ancestors(node: PageNode?): List<PageNode> = when (node) {
+        null -> emptyList()
+        else -> ancestors(node.parent()) + node
+    }
+
+    protected open fun findInPageGraph(dri: DRI, platforms: List<PlatformData>): PageNode? =
+        pageGraphRoot.dfs { it.dri == dri }
 
     protected open fun pathTo(node: PageNode, context: PageNode?): String {
 
@@ -37,20 +48,20 @@ open class DefaultLocationProvider(
             if (this is PackagePageNode) name
             else identifierToFilename(name)
 
-        fun getPath(pathNode: PageNode?, path: List<String> = mutableListOf()): List<String> = when(pathNode) {
+        fun getPath(pathNode: PageNode?, path: List<String> = mutableListOf()): List<String> = when (pathNode) {
             null -> path
             pageGraphRoot -> path + "root"
-            else -> getPath(pathNode.parent, path + pathNode.pathName())
+            else -> getPath(pathNode.parent(), path + pathNode.pathName())
         }
 
-        val contextNode = if (context?.children?.isEmpty() == true) context.parent else context
+        val contextNode = if (context?.children?.isEmpty() == true) context.parent() else context
         val nodePath = getPath(node).reversed()
         val contextPath = getPath(contextNode).reversed()
 
         val commonPathElements = nodePath.zip(contextPath).takeWhile { (a, b) -> a == b }.size
 
-        return ( List(contextPath.size - commonPathElements) { ".." } + nodePath.drop(commonPathElements) +
-                if(node.children.isNotEmpty()) listOf(PAGE_WITH_CHILDREN_SUFFIX) else emptyList()).joinToString("/")
+        return (List(contextPath.size - commonPathElements) { ".." } + nodePath.drop(commonPathElements) +
+                if (node.children.isNotEmpty()) listOf(PAGE_WITH_CHILDREN_SUFFIX) else emptyList()).joinToString("/")
     }
 
     private companion object {
@@ -63,7 +74,7 @@ fun DRI.toJavadocLocation(jdkVersion: Int): String { // TODO: classes without pa
     if (classNames == null) {
         return "$packageLink/package-summary.html".htmlEscape()
     }
-    val classLink = if (packageLink == null) { "$classNames.html" } else { "$packageLink/$classNames.html" }
+    val classLink = if (packageLink == null) "$classNames.html" else "$packageLink/$classNames.html"
     if (callable == null) {
         return classLink.htmlEscape()
     }
@@ -81,8 +92,11 @@ fun DRI.toDokkaLocation(extension: String): String { // TODO: classes without pa
     if (classNames == null) {
         return "$packageName/index$extension"
     }
-    val classLink = if (packageName == null) { "" } else { "$packageName/" } +
-            classNames.split('.').joinToString("/", transform = ::identifierToFilename)
+    val classLink = if (packageName == null) {
+        ""
+    } else {
+        "$packageName/"
+    } + classNames.split('.').joinToString("/", transform = ::identifierToFilename)
 
     if (callable == null) {
         return "$classLink/index$extension"
@@ -98,4 +112,4 @@ private fun identifierToFilename(name: String): String {
     val escaped = name.replace('<', '-').replace('>', '-')
     val lowercase = escaped.replace("[A-Z]".toRegex()) { matchResult -> "-" + matchResult.value.toLowerCase() }
     return if (lowercase in reservedFilenames) "--$lowercase--" else lowercase
-}
+}
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