1 package net.pterodactylus.sone.template
3 import net.pterodactylus.sone.core.LinkedElement
4 import net.pterodactylus.sone.core.LinkedImage
5 import net.pterodactylus.util.template.Filter
6 import net.pterodactylus.util.template.TemplateContext
7 import net.pterodactylus.util.template.TemplateContextFactory
8 import net.pterodactylus.util.template.TemplateParser
9 import java.io.StringReader
10 import java.io.StringWriter
13 * Renders all kinds of [LinkedElement]s.
15 class LinkedElementRenderFilter(private val templateContextFactory: TemplateContextFactory) : Filter {
18 private val loadedImageTemplate = """<a href="/<% link|html>"><span class="linked-element" title="<% link|html>" style="background-image: url('/<% link|html>')"></span></a>""".parse()
19 private val notLoadedImageTemplate = """<span class="linked-element" title="<% link|html>" style="background-image: url('images/loading-animation.gif')"></span>""".parse()
21 private fun String.parse() = StringReader(this).use { TemplateParser.parse(it) }
24 override fun format(templateContext: TemplateContext?, data: Any?, parameters: Map<String, Any?>?) =
26 data is LinkedElement && data.loading -> renderNotLoadedLinkedElement(data)
27 data is LinkedImage -> renderLinkedImage(data)
31 private fun renderLinkedImage(linkedImage: LinkedImage) =
33 val templateContext = templateContextFactory.createTemplateContext()
34 templateContext["link"] = linkedImage.link
35 loadedImageTemplate.render(templateContext, it)
39 private fun renderNotLoadedLinkedElement(linkedElement: LinkedElement) =
41 val templateContext = templateContextFactory.createTemplateContext()
42 templateContext["link"] = linkedElement.link
43 notLoadedImageTemplate.render(templateContext, it)