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package org.jetbrains.dokka.mathjax
import org.jetbrains.dokka.CoreExtensions
import org.jetbrains.dokka.DokkaConfiguration
import org.jetbrains.dokka.base.DokkaBase
import org.jetbrains.dokka.base.transformers.pages.tags.CustomTagContentProvider
import org.jetbrains.dokka.base.translators.documentables.PageContentBuilder.DocumentableContentBuilder
import org.jetbrains.dokka.model.doc.CustomTagWrapper
import org.jetbrains.dokka.pages.ContentPage
import org.jetbrains.dokka.pages.RootPageNode
import org.jetbrains.dokka.pages.WithDocumentables
import org.jetbrains.dokka.plugability.DokkaPlugin
import org.jetbrains.dokka.transformers.pages.PageTransformer
class MathjaxPlugin : DokkaPlugin() {
val transformer by extending {
CoreExtensions.pageTransformer with MathjaxTransformer
}
val mathjaxTagContentProvider by extending {
plugin<DokkaBase>().customTagContentProvider with MathjaxTagContentProvider order {
before(plugin<DokkaBase>().sinceKotlinTagContentProvider)
}
}
}
private const val ANNOTATION = "usesMathJax"
internal const val LIB_PATH = "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.6/MathJax.js?config=TeX-AMS_SVG&latest"
object MathjaxTransformer : PageTransformer {
override fun invoke(input: RootPageNode) = input.transformContentPagesTree {
it.modified(
embeddedResources = it.embeddedResources + if (it.isNeedingMathjax) listOf(LIB_PATH) else emptyList()
)
}
private val ContentPage.isNeedingMathjax
get() = (this as WithDocumentables).documentables.any { it.documentation.values
.flatMap { it.children }
.any { (it as? CustomTagWrapper)?.name == ANNOTATION } }
}
object MathjaxTagContentProvider : CustomTagContentProvider {
override fun isApplicable(customTag: CustomTagWrapper) = customTag.name == ANNOTATION
override fun DocumentableContentBuilder.contentForDescription(
sourceSet: DokkaConfiguration.DokkaSourceSet,
customTag: CustomTagWrapper
) {
comment(customTag.root, sourceSets = setOf(sourceSet))
}
}
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