Feat: Add a custom icon

scaladoc/resources/dotty_res/styles/theme/components/button/icon-button.css

@@ -533,6 +533,50 @@
   content: url("../../../../images/icon-buttons/gitter/dark/selected.svg");
 }
 
+/* custom button */
+
+.icon-button.custom-dark{
+  display: none;
+}
+
+.icon-button.custom::after {
+  content: "";
+  background-image: var(--bgimage);
+  background-repeat: no-repeat;
+  background-position: center;
+  background-size: contain;
+  display: block;
+  max-width: 100%;
+  max-height: 100%;
+}
+
+.theme-dark .icon-button.custom-dark{
+  display: unset;
+}
+
+.theme-dark .icon-button.custom-dark::after{
+  content: "";
+  background-image: var(--bgimage-dark);
+  background-repeat: no-repeat;
+  background-position: center;
+  background-size: contain;
+  display: block;
+  max-width: 100%;
+  max-height: 100%;
+}
+
+.theme-dark .icon-button.custom{
+  display: none;
+}
+
+.icon-button.custom:hover{
+  opacity: 0.8;
+}
+
+.icon-button.custom-dark:hover{
+  opacity: 0.8;
+}
+
 /* copy button */
 
 .icon-button.copy-button::after {
@@ -830,4 +874,4 @@
 
 .theme-dark .documentableElement .ar.icon-button.expanded.selected::after {
   content: url("../../../../images/icon-buttons/arrow-down/dark/selected.svg");
-}
+}

scaladoc/resources/dotty_res/styles/theme/layout/footer.css

@@ -64,7 +64,7 @@
     display: none;
   }
 
-  #footer.mobile-footer  .text-mobile {
+  #footer.mobile-footer .text-mobile {
     display: flex;
     width: 100%;
     justify-content: center;
@@ -78,5 +78,5 @@
   #footer.mobile-footer > .text-mobile {
     display: flex;
   }
-  
+
 }

scaladoc/src/dotty/tools/scaladoc/ScaladocSettings.scala

@@ -43,7 +43,7 @@ class ScaladocSettings extends SettingGroup with AllScalaSettings:
 
   val socialLinks: Setting[List[String]] =
     MultiStringSetting("-social-links", "social-links",
-      "Links to social sites. '[github|twitter|gitter|discord]::link' syntax is used.")
+      "Links to social sites. '[github|twitter|gitter|discord]::link' or 'custom::link::light_icon_file_name[::dark_icon_file_name]' syntax is used. For custom links, the icons must be present in '_assets/images/'")
 
   val deprecatedSkipPackages: Setting[List[String]] =
     MultiStringSetting("-skip-packages", "packages", "Deprecated, please use `-skip-by-id` or `-skip-by-regex`")

scaladoc/src/dotty/tools/scaladoc/SocialLinks.scala

@@ -5,12 +5,16 @@ enum SocialLinks(val url: String, val className: String):
   case Twitter(tUrl: String) extends SocialLinks(tUrl, "twitter")
   case Gitter(gUrl: String) extends SocialLinks(gUrl, "gitter")
   case Discord(dUrl: String) extends SocialLinks(dUrl, "discord")
+  case Custom(cUrl: String, lightIcon: String, darkIcon: String) extends SocialLinks(cUrl, "custom")
 
 object SocialLinks:
+  val LowercaseNamePattern = "^[a-z]+$".r
+
   def parse(s: String): Either[String, SocialLinks] =
     val errorPrefix = s"Social links arg $s is invalid: "
     val splitted = s.split("::")
-    splitted.head match {
+
+    splitted.head.toLowerCase match {
       case "github" if splitted.size == 2 => Right(Github(splitted(1)))
       case "github" => Left(errorPrefix + "For 'github' arg expected one argument: url")
       case "twitter" if splitted.size == 2 => Right(Twitter(splitted(1)))
@@ -19,5 +23,8 @@ object SocialLinks:
       case "gitter" => Left(errorPrefix + "For 'gitter' arg expected one argument: url")
       case "discord" if splitted.size == 2 => Right(Discord(splitted(1)))
       case "discord" => Left(errorPrefix + "For 'discord' arg expected one argument: url")
+      case LowercaseNamePattern() if splitted.size == 4 => Right(Custom(splitted(1), splitted(2), splitted(3)))
+      case LowercaseNamePattern() if splitted.size == 3 => Right(Custom(splitted(1), splitted(2), splitted(2)))
+      case LowercaseNamePattern() => Left(errorPrefix + "For the 'custom' link, a minimum of two arguments is expected: URL, light icon file name, [dark icon file name]")
       case _ => Left(errorPrefix)
     }

scaladoc/src/dotty/tools/scaladoc/renderers/HtmlRenderer.scala

@@ -166,7 +166,14 @@ class HtmlRenderer(rootPackage: Member, members: Map[DRI, Member])(using ctx: Do
     def icon(link: SocialLinks) = link.className
     args.socialLinks.map { link =>
       a(href := link.url) (
-        button(cls := s"icon-button ${icon(link)}")
+        link match
+          case SocialLinks.Custom(_, lightIcon, darkIcon) =>
+            Seq(
+              button(cls := s"icon-button ${icon(link)}", style := s"--bgimage:url(../../../../images/$lightIcon)"),
+              button(cls := s"icon-button ${icon(link)}-dark", style := s"--bgimage-dark:url(../../../../images/$darkIcon)")
+            )
+          case _ =>
+            button(cls := s"icon-button ${icon(link)}")
       )
     }
 
@@ -308,18 +315,7 @@ class HtmlRenderer(rootPackage: Member, members: Map[DRI, Member])(using ctx: Do
             "Generated with"
           ),
           div(cls := "right-container")(
-            a(href := "https://github.com/lampepfl/dotty") (
-              button(cls := "icon-button gh")
-            ),
-            a(href := "https://twitter.com/scala_lang") (
-              button(cls := "icon-button twitter")
-            ),
-            a(href := "https://discord.com/invite/scala") (
-              button(cls := "icon-button discord"),
-            ),
-            a(href := "https://gitter.im/scala/scala") (
-              button(cls := "icon-button gitter"),
-            ),
+            socialLinks,
             div(cls := "text")(textFooter)
           ),
           div(cls := "text-mobile")(textFooter)

scaladoc/test/dotty/tools/scaladoc/SocialLinksTest.scala

@@ -0,0 +1,52 @@
+package dotty.tools.scaladoc
+
+import org.junit.Test
+import org.junit.Assert._
+import dotty.tools.scaladoc.SocialLinks
+
+class SocialLinksTest:
+
+  @Test def githubLink(): Unit =
+    val githubLink = "github::https://github.com/test"
+    val expected = SocialLinks.Github("https://github.com/test")
+    assertEquals(expected, SocialLinks.parse(githubLink).getOrElse(null))
+
+  @Test def twitterLink(): Unit =
+    val twitterLink = "twitter::https://twitter.com/test"
+    val expected = SocialLinks.Twitter("https://twitter.com/test")
+    assertEquals(expected, SocialLinks.parse(twitterLink).getOrElse(null))
+
+  @Test def gitterLink(): Unit =
+    val gitterLink = "gitter::https://gitter.im/test"
+    val expected = SocialLinks.Gitter("https://gitter.im/test")
+    assertEquals(expected, SocialLinks.parse(gitterLink).getOrElse(null))
+
+  @Test def discordLink(): Unit =
+    val discordLink = "discord::https://discord.gg/test"
+    val expected = SocialLinks.Discord("https://discord.gg/test")
+    assertEquals(expected, SocialLinks.parse(discordLink).getOrElse(null))
+
+  @Test def customLinkLight(): Unit =
+    val customLink = "namecustom::https://custom.com/test::custom"
+    val expected = SocialLinks.Custom("https://custom.com/test", "custom", "custom")
+    assertEquals(expected, SocialLinks.parse(customLink).getOrElse(null))
+
+  @Test def customLinkLightAndDark(): Unit =
+    val customLink = "namecustom::https://custom.com/test::custom::custom-dark"
+    val expected = SocialLinks.Custom("https://custom.com/test", "custom", "custom-dark")
+    assertEquals(expected, SocialLinks.parse(customLink).getOrElse(null))
+
+  @Test def customLinkUpper(): Unit =
+    val customLink = "Namecustom::https://custom.com/test::custom"
+    val expected = SocialLinks.Custom("https://custom.com/test", "custom", "custom")
+    assertEquals(expected, SocialLinks.parse(customLink).getOrElse(null))
+
+  @Test def parseRegexError(): Unit =
+    val regexErrorLink = "nameCustom3::https://custom.com/test::custom::custom-dark::custom"
+    val expected = s"Social links arg $regexErrorLink is invalid: "
+    assertEquals(expected, SocialLinks.parse(regexErrorLink).left.getOrElse(null))
+
+  @Test def parseLinkWithError(): Unit =
+    val errorLink = "namecustom::https://custom.com/test::custom::custom-dark::custom"
+    val expected = s"Social links arg $errorLink is invalid: For the 'custom' link, a minimum of two arguments is expected: URL, light icon file name, [dark icon file name]"
+    assertEquals(expected, SocialLinks.parse(errorLink).left.getOrElse(null))