Add "n new posts" snackbar

Clover/app/src/main/java/org/floens/chan/core/presenter/ThreadPresenter.java

@@ -81,6 +81,7 @@ public class ThreadPresenter implements ChanLoader.ChanLoaderCallback, PostAdapt
     private String searchQuery;
     private PostFilter.Order order = PostFilter.Order.BUMP;
     private boolean historyAdded = false;
+    private int notificationPostCount = -1;
 
     public ThreadPresenter(ThreadPresenterCallback threadPresenterCallback) {
         this.threadPresenterCallback = threadPresenterCallback;
@@ -115,6 +116,7 @@ public class ThreadPresenter implements ChanLoader.ChanLoaderCallback, PostAdapt
             chanLoader = null;
             loadable = null;
             historyAdded = false;
+            notificationPostCount = -1;
 
             threadPresenterCallback.showLoading();
         }
@@ -216,6 +218,20 @@ public class ThreadPresenter implements ChanLoader.ChanLoaderCallback, PostAdapt
             }
         }
 
+        if (loadable.isThreadMode()) {
+            int postsSize = result.posts.size();
+            if (notificationPostCount < 0) {
+                notificationPostCount = postsSize;
+            } else {
+                if (postsSize > notificationPostCount) {
+                    int more = postsSize - notificationPostCount;
+                    notificationPostCount = postsSize;
+
+                    threadPresenterCallback.showNewPostsNotification(true, more);
+                }
+            }
+        }
+
         chanLoader.setAutoLoadMore(isWatching());
         showPosts();
 
@@ -251,6 +267,8 @@ public class ThreadPresenter implements ChanLoader.ChanLoaderCallback, PostAdapt
             pin.onBottomPostViewed();
             watchManager.updatePin(pin);
         }
+
+        threadPresenterCallback.showNewPostsNotification(false, -1);
     }
 
     public void scrollTo(int position, boolean smooth) {
@@ -626,5 +644,7 @@ public class ThreadPresenter implements ChanLoader.ChanLoaderCallback, PostAdapt
         void hideDeleting(String message);
 
         void hideThread(Post post);
+
+        void showNewPostsNotification(boolean show, int more);
     }
 }

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

@@ -46,6 +46,7 @@ import com.android.volley.VolleyError;
 import org.floens.chan.Chan;
 import org.floens.chan.R;
 import org.floens.chan.controller.Controller;
+import org.floens.chan.core.database.DatabaseManager;
 import org.floens.chan.core.model.ChanThread;
 import org.floens.chan.core.model.Loadable;
 import org.floens.chan.core.model.Post;
@@ -54,7 +55,6 @@ import org.floens.chan.core.model.PostLinkable;
 import org.floens.chan.core.model.ThreadHide;
 import org.floens.chan.core.presenter.ThreadPresenter;
 import org.floens.chan.core.settings.ChanSettings;
-import org.floens.chan.core.database.DatabaseManager;
 import org.floens.chan.ui.adapter.PostFilter;
 import org.floens.chan.ui.cell.PostCellInterface;
 import org.floens.chan.ui.helper.PostPopupHelper;
@@ -97,6 +97,7 @@ public class ThreadLayout extends CoordinatorLayout implements ThreadPresenter.T
     private ProgressDialog deletingDialog;
     private boolean refreshedFromSwipe;
     private boolean showingReplyButton = false;
+    private Snackbar newPostsNotification;
 
     public ThreadLayout(Context context) {
         super(context);
@@ -379,6 +380,30 @@ public class ThreadLayout extends CoordinatorLayout implements ThreadPresenter.T
         fixSnackbarText(getContext(), snackbar);
     }
 
+    @Override
+    public void showNewPostsNotification(boolean show, int more) {
+        if (show) {
+            if (!threadListLayout.scrolledToBottom()) {
+                String text = getContext().getString(R.string.thread_new_posts,
+                        more, getContext().getResources().getQuantityString(R.plurals.posts, more, more));
+
+                newPostsNotification = Snackbar.make(this, text, Snackbar.LENGTH_LONG);
+                newPostsNotification.setAction(R.string.thread_new_posts_goto, new OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        presenter.scrollTo(-1, false);
+                    }
+                }).show();
+                fixSnackbarText(getContext(), newPostsNotification);
+            }
+        } else {
+            if (newPostsNotification != null) {
+                newPostsNotification.dismiss();
+                newPostsNotification = null;
+            }
+        }
+    }
+
     public ThumbnailView getThumbnail(PostImage postImage) {
         if (postPopupHelper.isOpen()) {
             return postPopupHelper.getThumbnail(postImage);
@@ -414,6 +439,7 @@ public class ThreadLayout extends CoordinatorLayout implements ThreadPresenter.T
                         postPopupHelper.popAll();
                         showSearch(false);
                         showReplyButton(false);
+                        newPostsNotification = null;
                         break;
                 }
             }

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

@@ -248,7 +248,7 @@ public class ThreadListLayout extends LinearLayout implements ReplyLayout.ReplyL
         if (query != null) {
             int size = postAdapter.getDisplaySize();
             searchStatus.setText(getContext().getString(R.string.search_results,
-                    getContext().getResources().getQuantityString(R.plurals.posts, size, size), query));
+                    size, getContext().getResources().getQuantityString(R.plurals.posts, size, size), query));
         }
     }
 
@@ -274,6 +274,22 @@ public class ThreadListLayout extends LinearLayout implements ReplyLayout.ReplyL
         return true;
     }
 
+    public boolean scrolledToBottom() {
+        switch (postViewMode) {
+            case LIST:
+                if (((LinearLayoutManager) layoutManager).findLastVisibleItemPosition() == postAdapter.getItemCount() - 1) {
+                    return true;
+                }
+                break;
+            case CARD:
+                if (((GridLayoutManager) layoutManager).findLastVisibleItemPosition() == postAdapter.getItemCount() - 1) {
+                    return true;
+                }
+                break;
+        }
+        return false;
+    }
+
     public void cleanup() {
         /*if (ChanBuild.DEVELOPER_MODE) {
             Pin pin = ChanApplication.getWatchManager().findPinByLoadable(showingThread.loadable);

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

@@ -33,8 +33,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     </plurals>
 
     <plurals name="posts">
-        <item quantity="one">%d post</item>
-        <item quantity="other">%d posts</item>
+        <item quantity="one">post</item>
+        <item quantity="other">posts</item>
     </plurals>
 
     <plurals name="reply">
@@ -71,7 +71,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     <string name="order_oldest">Oldest</string>
 
     <string name="search_hint">Search</string>
-    <string name="search_results">Found %1$s for "%2$s"</string>
+    <string name="search_results">Found %1$d %2$s for "%3$s"</string>
     <string name="search_empty">Search subjects, comments, names and filenames</string>
 
     <string name="open_link_confirmation">Open link?</string>
@@ -103,6 +103,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     <string name="thread_load_failed_retry">Retry</string>
     <string name="thread_archived">Archived</string>
     <string name="thread_closed">Closed</string>
+    <string name="thread_new_posts">%1$d new %2$s</string>
+    <string name="thread_new_posts_goto">View</string>
 
     <string name="board_edit">Board editor</string>
     <string name="board_edit_header">Add, remove and reorder your boards here.\nThe topmost board will be loaded automatically.</string>