Add scroll up/down

Clover/app/src/main/java/org/floens/chan/ui/controller/ViewThreadController.java

@@ -43,6 +43,8 @@ public class ViewThreadController extends ThreadController implements ThreadLayo
     private static final int REFRESH_ID = 101;
     private static final int SEARCH_ID = 102;
     private static final int SHARE_ID = 103;
+    private static final int UP_ID = 104;
+    private static final int DOWN_ID = 105;
 
     private ToolbarMenuItem pinItem;
     private Loadable loadable;
@@ -70,7 +72,9 @@ public class ViewThreadController extends ThreadController implements ThreadLayo
         navigationItem.createOverflow(context, this, Arrays.asList(
                 new FloatingMenuItem(REFRESH_ID, context.getString(R.string.action_reload)),
                 new FloatingMenuItem(SEARCH_ID, context.getString(R.string.action_search)),
-                new FloatingMenuItem(SHARE_ID, context.getString(R.string.action_share))
+                new FloatingMenuItem(SHARE_ID, context.getString(R.string.action_share)),
+                new FloatingMenuItem(UP_ID, context.getString(R.string.action_up)),
+                new FloatingMenuItem(DOWN_ID, context.getString(R.string.action_down))
         ));
 
         loadLoadable(loadable);
@@ -172,6 +176,11 @@ public class ViewThreadController extends ThreadController implements ThreadLayo
                 String link = ChanUrls.getThreadUrlDesktop(loadable.board, loadable.no);
                 AndroidUtils.shareLink(link);
                 break;
+            case UP_ID:
+            case DOWN_ID:
+                boolean up = ((Integer)item.getId()) == UP_ID;
+                threadLayout.getPresenter().scrollTo(up ? 0 : -1, false);
+                break;
         }
     }
 

Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadListLayout.java

@@ -325,6 +325,10 @@ public class ThreadListLayout extends LinearLayout implements ReplyLayout.ReplyL
     }
 
     public void scrollTo(int position, boolean smooth) {
+        if (position < 0) {
+            position = recyclerView.getAdapter().getItemCount() - 1;
+        }
+
         if (smooth) {
             recyclerView.smoothScrollToPosition(position);
         } else {

Clover/app/src/main/res/values/strings.xml

@@ -57,6 +57,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     <string name="action_search_image">Image search</string>
     <string name="action_switch_catalog">Catalog mode</string>
     <string name="action_switch_board">Board mode</string>
+    <string name="action_up">Up</string>
+    <string name="action_down">Down</string>
 
     <string name="search_hint">Search</string>
     <string name="search_results">Found %1$s for "%2$s"</string>