Fix hidden FAB when list changes

app/src/main/java/com/beemdevelopment/aegis/helpers/FabScrollHelper.java

@@ -18,32 +18,41 @@ public class FabScrollHelper {
 
     public void onScroll(int dx, int dy) {
         if (dy > 0 && _fabMenu.getVisibility() == View.VISIBLE && !_isAnimating) {
-            _isAnimating = true;
-            CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) _fabMenu.getLayoutParams();
-            int fabBottomMargin = lp.bottomMargin;
+            setVisible(false);
+        } else if (dy < 0 && _fabMenu.getVisibility() != View.VISIBLE && !_isAnimating) {
+            setVisible(true);
+        }
+    }
+
+    public void setVisible(boolean visible) {
+        if (visible) {
+            _fabMenu.setVisibility(View.VISIBLE);
             _fabMenu.animate()
-                    .translationY(_fabMenu.getHeight() + fabBottomMargin)
-                    .setInterpolator(new AccelerateInterpolator(2))
+                    .translationY(0)
+                    .setInterpolator(new DecelerateInterpolator(2))
                     .setListener(new AnimatorListenerAdapter() {
                         @Override
                         public void onAnimationEnd(Animator animation) {
                             _isAnimating = false;
-                            _fabMenu.setVisibility(View.INVISIBLE);
                             super.onAnimationEnd(animation);
                         }
                     }).start();
-        } else if (dy < 0 && _fabMenu.getVisibility() != View.VISIBLE && !_isAnimating) {
-            _fabMenu.setVisibility(View.VISIBLE);
+        } else {
+            _isAnimating = true;
+            CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) _fabMenu.getLayoutParams();
+            int fabBottomMargin = lp.bottomMargin;
             _fabMenu.animate()
-                    .translationY(0)
-                    .setInterpolator(new DecelerateInterpolator(2))
+                    .translationY(_fabMenu.getHeight() + fabBottomMargin)
+                    .setInterpolator(new AccelerateInterpolator(2))
                     .setListener(new AnimatorListenerAdapter() {
                         @Override
                         public void onAnimationEnd(Animator animation) {
                             _isAnimating = false;
+                            _fabMenu.setVisibility(View.INVISIBLE);
                             super.onAnimationEnd(animation);
                         }
                     }).start();
         }
+
     }
 }

app/src/main/java/com/beemdevelopment/aegis/ui/MainActivity.java

@@ -743,6 +743,9 @@ public class MainActivity extends AegisActivity implements EntryListView.Listene
         _fabScrollHelper.onScroll(dx, dy);
     }
 
+    @Override
+    public void onListChange() { _fabScrollHelper.setVisible(true); }
+
     @Override
     public void onLocked() {
         if (_actionMode != null) {

app/src/main/java/com/beemdevelopment/aegis/ui/views/EntryAdapter.java

@@ -130,6 +130,7 @@ public class EntryAdapter extends RecyclerView.Adapter<EntryHolder> implements I
             }
         }
 
+        _view.onListChange();
         checkPeriodUniformity();
     }
 
@@ -148,6 +149,7 @@ public class EntryAdapter extends RecyclerView.Adapter<EntryHolder> implements I
             notifyItemRemoved(position);
         }
 
+        _view.onListChange();
         checkPeriodUniformity();
     }
 
@@ -273,6 +275,7 @@ public class EntryAdapter extends RecyclerView.Adapter<EntryHolder> implements I
             Collections.sort(_shownEntries, comparator);
         }
 
+        _view.onListChange();
         notifyDataSetChanged();
     }
 
@@ -560,5 +563,6 @@ public class EntryAdapter extends RecyclerView.Adapter<EntryHolder> implements I
         void onPeriodUniformityChanged(boolean uniform, int period);
         void onSelect(VaultEntry entry);
         void onDeselect(VaultEntry entry);
+        void onListChange();
     }
 }

app/src/main/java/com/beemdevelopment/aegis/ui/views/EntryListView.java

@@ -236,6 +236,9 @@ public class EntryListView extends Fragment implements EntryAdapter.Listener {
         }
     }
 
+    @Override
+    public void onListChange() { _listener.onListChange(); }
+
     public void setCodeGroupSize(int codeGrouping) {
         _adapter.setCodeGroupSize(codeGrouping);
     }
@@ -339,6 +342,7 @@ public class EntryListView extends Fragment implements EntryAdapter.Listener {
         void onScroll(int dx, int dy);
         void onSelect(VaultEntry entry);
         void onDeselect(VaultEntry entry);
+        void onListChange();
     }
 
     private class VerticalSpaceItemDecoration extends RecyclerView.ItemDecoration {