Add issue pagination.

src/main/scala/app/IssuesController.scala

@@ -107,6 +107,13 @@ trait IssuesControllerBase extends ControllerBase {
     val userName   = if(filter != "all") Some(params("userName")) else None
     val sessionKey = "%s/%s/issues".format(owner, repository)
 
+    val page = try {
+      val i = params.getOrElse("page", "1").toInt
+      if(i <= 0) 1 else i
+    } catch {
+      case e: NumberFormatException => 1
+    }
+
     // retrieve search condition
     val condition = if(request.getQueryString == null){
       session.get(sessionKey).getOrElse(IssueSearchCondition()).asInstanceOf[IssueSearchCondition]
@@ -115,7 +122,9 @@ trait IssuesControllerBase extends ControllerBase {
     session.put(sessionKey, condition)
 
     getRepository(owner, repository, baseUrl).map { repositoryInfo =>
-      issues.html.issues(searchIssue(owner, repository, condition, filter, userName),
+      issues.html.issues(
+        searchIssue(owner, repository, condition, filter, userName, (page - 1) * IssueLimit, IssueLimit),
+        page,
         getLabels(owner, repository),
         getMilestones(owner, repository).filter(_.closedDate.isEmpty),
         countIssue(owner, repository, condition.copy(state = "open"), filter, userName),
@@ -124,7 +133,10 @@ trait IssuesControllerBase extends ControllerBase {
         context.loginAccount.map(x => countIssue(owner, repository, condition, "assigned", Some(x.userName))),
         context.loginAccount.map(x => countIssue(owner, repository, condition, "created_by", Some(x.userName))),
         countIssueGroupByLabels(owner, repository, condition, filter, userName),
-        condition, filter, repositoryInfo, isWritable(owner, repository, context.loginAccount))
+        condition,
+        filter,
+        repositoryInfo,
+        isWritable(owner, repository, context.loginAccount))
 
     } getOrElse NotFound
   }

src/main/scala/service/IssuesService.scala

@@ -93,9 +93,12 @@ trait IssuesService {
    * @param condition the search condition
    * @param filter the filter type ("all", "assigned" or "created_by")
    * @param userName the filter user name required for "assigned" and "created_by"
+   * @param offset the offset for pagination
+   * @param limit the limit for pagination
    * @return the count of the search result
    */
-  def searchIssue(owner: String, repository: String, condition: IssueSearchCondition, filter: String, userName: Option[String]) =
+  def searchIssue(owner: String, repository: String, condition: IssueSearchCondition,
+                  filter: String, userName: Option[String], offset: Int, limit: Int): List[Issue] =
     searchIssueQuery(owner, repository, condition, filter, userName).sortBy { t =>
       (condition.sort match {
         case "created"  => t.registeredDate
@@ -107,7 +110,7 @@ trait IssuesService {
           case "desc" => sort desc
         }
       }
-    } list
+    } drop(offset) take(limit) list
 
   /**
    * Assembles query for conditional issue searching.
@@ -164,6 +167,8 @@ object IssuesService {
   import java.net.URLEncoder
   import javax.servlet.http.HttpServletRequest
 
+  val IssueLimit = 1
+
   case class IssueSearchCondition(
       labels: Set[String]      = Set.empty,
       milestoneId: Option[Int] = None,

src/main/twirl/issues/issues.scala.html

@@ -1,4 +1,4 @@
-@(issues: List[model.Issue], labels: List[model.Label], milestones: List[model.Milestone],
+@(issues: List[model.Issue], page: Int, labels: List[model.Label], milestones: List[model.Milestone],
   openCount: Int, closedCount: Int, allCount: Int, assignedCount: Option[Int], createdByCount: Option[Int], labelCounts: Map[String, Int],
   condition: service.IssuesService.IssueSearchCondition, filter: String,
   repository: service.RepositoryService.RepositoryInfo, isWritable: Boolean)(implicit context: app.Context)
@@ -80,17 +80,38 @@
           <i class="icon-remove-circle"></i> Clear milestone and label filters
         </a>
       }
+      @defining(if(condition.state == "open") openCount else closedCount){ count =>
+        @if(count > service.IssuesService.IssueLimit){
           <div class="pagination pull-right">
             <ul>
+              @if(page == 1){
                 <li class="disabled"><span>&#9664;</span></li>
+              } else {
+                <li><a href="@condition.toURL&page=@(page - 1)">&#9664;</a></li>
+              }
+              @for(i <- 1 to (count - 1) / service.IssuesService.IssueLimit + 1){
+                @if(i == page){
+                  <li class="active"><span>@i</span></li>
+                } else {
+                  <li><a href="@condition.toURL&page=@i">@i</a></li>
+                }
+              }
+              @*
               <li class="active"><span>1</span></li>
               <li><a href="#">2</a></li>
               <li><a href="#">3</a></li>
               <li><span>&hellip;</span></li>
               <li><a href="#">7</a></li>
-          <li><a href="#">&#9654;</a></li>
+              *@
+              @if(page == (count - 1) / service.IssuesService.IssueLimit + 1){
+                <li class="disabled"><span>&#9654;</span></li>
+              } else {
+                <li><a href="@condition.toURL&page=@(page + 1)">&#9654;</a></li>
+              }
             </ul>
           </div>
+        }
+      }
       <div class="btn-group">
         <a class="btn@if(condition.state == "open"){ active}" href="@condition.copy(state = "open").toURL">@openCount Open</a>
         <a class="btn@if(condition.state == "closed"){ active}" href="@condition.copy(state = "closed").toURL">@closedCount Closed</a>