Use Gravatar if committer is not registered in GitBucket.

src/main/scala/util/JGitUtil.scala

@@ -52,14 +52,21 @@ object JGitUtil {
    * @param id the commit id
    * @param time the commit time
    * @param committer  the committer name
+   * @param mailAddress the mail address of the committer
    * @param shortMessage the short message
    * @param fullMessage the full message
    * @param parents the list of parent commit id
    */
-  case class CommitInfo(id: String, time: Date, committer: String, shortMessage: String, fullMessage: String, parents: List[String]){
+  case class CommitInfo(id: String, time: Date, committer: String, mailAddress: String,
+                        shortMessage: String, fullMessage: String, parents: List[String]){
     
     def this(rev: org.eclipse.jgit.revwalk.RevCommit) = this(
-        rev.getName, rev.getCommitterIdent.getWhen, rev.getCommitterIdent.getName, rev.getShortMessage, rev.getFullMessage,
+        rev.getName,
+        rev.getCommitterIdent.getWhen,
+        rev.getCommitterIdent.getName,
+        rev.getCommitterIdent.getEmailAddress,
+        rev.getShortMessage,
+        rev.getFullMessage,
         rev.getParents().map(_.name).toList)
 
     val summary = {

src/main/scala/view/AvatarImageProvider.scala

@@ -10,11 +10,16 @@ trait AvatarImageProvider { self: RequestCache =>
    * Returns <img> which displays the avatar icon.
    * Looks up Gravatar if avatar icon has not been configured in user settings.
    */
-  protected def getAvatarImageHtml(userName: String, size: Int, tooltip: Boolean = false)(implicit context: app.Context): Html = {
+  protected def getAvatarImageHtml(userName: String, size: Int,
+      mailAddress: String = "", tooltip: Boolean = false)(implicit context: app.Context): Html = {
     val src = getAccountByUserName(userName).collect { case account if(account.image.isEmpty) =>
       s"""http://www.gravatar.com/avatar/${StringUtil.md5(account.mailAddress)}?s=${size}"""
     } getOrElse {
-      s"""${context.path}/${userName}/_avatar"""
+      if(mailAddress.nonEmpty){
+        s"""http://www.gravatar.com/avatar/${StringUtil.md5(mailAddress)}?s=${size}"""
+      } else {
+        s"""${context.path}/${userName}/_avatar"""
+      }
     }
     if(tooltip){
       Html(s"""<img src="${src}" class="avatar" style="width: ${size}px; height: ${size}px;" data-toggle="tooltip" title=${userName}/>""")

src/main/scala/view/helpers.scala

@@ -40,7 +40,10 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
    * Looks up Gravatar if avatar icon has not been configured in user settings.
    */
   def avatar(userName: String, size: Int, tooltip: Boolean = false)(implicit context: app.Context): Html =
-    getAvatarImageHtml(userName, size, tooltip)
+    getAvatarImageHtml(userName, size, "", tooltip)
+
+  def avatar(commit: util.JGitUtil.CommitInfo, size: Int)(implicit context: app.Context): Html =
+    getAvatarImageHtml(commit.committer, size, commit.mailAddress)
 
   /**
    * Converts commit id, issue id and username to the link.