From 97d7f59852ae9b2961aa5547848c56162349bb96 Mon Sep 17 00:00:00 2001
From: Floens <floens@gmail.com>
Date: Sat, 15 Aug 2015 13:28:26 +0200
Subject: [PATCH] Smooth scroll when the "n new posts" view button is clicked.

---
 .../java/org/floens/chan/ui/layout/ThreadLayout.java   |  2 +-
 .../org/floens/chan/ui/layout/ThreadListLayout.java    | 10 ++++++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadLayout.java b/Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadLayout.java
index ca28a1a1..5bdf76c5 100644
--- a/Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadLayout.java
+++ b/Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadLayout.java
@@ -409,7 +409,7 @@ public class ThreadLayout extends CoordinatorLayout implements ThreadPresenter.T
                 newPostsNotification.setAction(R.string.thread_new_posts_goto, new OnClickListener() {
                     @Override
                     public void onClick(View v) {
-                        presenter.scrollTo(-1, false);
+                        presenter.scrollTo(-1, true);
                     }
                 }).show();
                 fixSnackbarText(getContext(), newPostsNotification);
diff --git a/Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadListLayout.java b/Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadListLayout.java
index 4cbf8a6f..85c43e5d 100644
--- a/Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadListLayout.java
+++ b/Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadListLayout.java
@@ -356,10 +356,16 @@ public class ThreadListLayout extends LinearLayout implements ReplyLayout.ReplyL
 
     public void scrollTo(int displayPosition, boolean smooth) {
         if (displayPosition < 0) {
+            int bottom = postAdapter.getItemCount() - 1;
+            int difference = Math.abs(bottom - getTopAdapterPosition());
+            if (difference > MAX_SMOOTH_SCROLL_DISTANCE) {
+                smooth = false;
+            }
+
             if (smooth) {
-                recyclerView.smoothScrollToPosition(postAdapter.getItemCount() - 1);
+                recyclerView.smoothScrollToPosition(bottom);
             } else {
-                recyclerView.scrollToPosition(postAdapter.getItemCount() - 1);
+                recyclerView.scrollToPosition(bottom);
             }
         } else {
             int scrollPosition = postAdapter.getScrollPosition(displayPosition);