(refs #109)Change link color for absent Wiki pages.

src/main/scala/view/Markdown.scala

@@ -1,12 +1,14 @@
 package view
 
 import util.StringUtil
+import util.ControlUtil._
+import util.Directory._
 import org.parboiled.common.StringUtils
 import org.pegdown._
 import org.pegdown.ast._
 import org.pegdown.LinkRenderer.Rendering
 import scala.collection.JavaConverters._
-import service.RequestCache
+import service.{RequestCache, WikiService}
 
 object Markdown {
 
@@ -29,7 +31,7 @@ object Markdown {
 }
 
 class GitBucketLinkRender(context: app.Context, repository: service.RepositoryService.RepositoryInfo,
-                          enableWikiLink: Boolean) extends LinkRenderer {
+                          enableWikiLink: Boolean) extends LinkRenderer with WikiService {
   override def render(node: WikiLinkNode): Rendering = {
     if(enableWikiLink){
       try {
@@ -40,8 +42,14 @@ class GitBucketLinkRender(context: app.Context, repository: service.RepositorySe
         } else {
           (text, text)
         }
+
         val url = repository.url.replaceFirst("/git/", "/").replaceFirst("\\.git$", "") + "/wiki/" + StringUtil.urlEncode(page)
+
+        if(getWikiPage(repository.owner, repository.name, page).isDefined){
           new Rendering(url, label)
+        } else {
+          new Rendering(url, label).withAttribute("class", "absent")
+        }
       } catch {
         case e: java.io.UnsupportedEncodingException => throw new IllegalStateException
       }

src/main/webapp/assets/common/css/gitbucket.css

@@ -649,6 +649,10 @@ h1.wiki-title {
   margin-top: 0px;
 }
 
+a.absent {
+  color: #c00;
+}
+
 /****************************************************************************/
 /* Repository Settings */
 /****************************************************************************/