FairEmail/patches/SelectionTracker.patch

--- /home/marcel/support/recyclerview/recyclerview-selection/src/main/java/androidx/recyclerview/selection/DefaultSelectionTracker.java	2020-03-23 17:03:46.043122318 +0100
+++ app/src/main/java/androidx/recyclerview/selection/DefaultSelectionTracker.java	2020-06-26 16:48:04.938298254 +0200
@@ -379,6 +379,10 @@ public class DefaultSelectionTracker<K>
         return mRange != null;
     }
 
+    boolean isOverlapping(int position, int count) {
+        return (mRange != null && mRange.isOverlapping(position, count));
+    }
+
     private boolean canSetState(@NonNull K key, boolean nextState) {
         return mSelectionPredicate.canSetStateForKey(key, nextState);
     }
@@ -390,7 +394,7 @@ public class DefaultSelectionTracker<K>
 
     @SuppressWarnings({"WeakerAccess", "unchecked"}) /* synthetic access */
     void onDataSetChanged() {
-        mSelection.clearProvisionalSelection();
+        //mSelection.clearProvisionalSelection();
 
         notifySelectionRefresh();
 
@@ -601,17 +605,21 @@ public class DefaultSelectionTracker<K>
 
         @Override
         public void onItemRangeInserted(int startPosition, int itemCount) {
-            mSelectionTracker.endRange();
+            if (mSelectionTracker.isOverlapping(startPosition, itemCount))
+                mSelectionTracker.endRange();
         }
 
         @Override
         public void onItemRangeRemoved(int startPosition, int itemCount) {
-            mSelectionTracker.endRange();
+            if (mSelectionTracker.isOverlapping(startPosition, itemCount))
+                mSelectionTracker.endRange();
         }
 
         @Override
         public void onItemRangeMoved(int fromPosition, int toPosition, int itemCount) {
-            mSelectionTracker.endRange();
+            if (mSelectionTracker.isOverlapping(fromPosition, itemCount) ||
+                    mSelectionTracker.isOverlapping(toPosition, itemCount))
+                mSelectionTracker.endRange();
         }
     }
 }
--- /home/marcel/support/recyclerview/recyclerview-selection/src/main/java/androidx/recyclerview/selection/Range.java	2020-03-23 17:03:46.045122318 +0100
+++ app/src/main/java/androidx/recyclerview/selection/Range.java	2020-06-26 16:36:39.708283142 +0200
@@ -169,6 +169,11 @@ final class Range {
         mCallbacks.updateForRange(begin, end, selected, type);
     }
 
+    boolean isOverlapping(int position, int count) {
+        return (position >= mBegin && position <= mEnd) ||
+                (position + count >= mBegin && position + count <= mEnd);
+    }
+
     @Override
     public String toString() {
         return "Range{begin=" + mBegin + ", end=" + mEnd + "}";
--- /home/marcel/support/recyclerview/recyclerview-selection/src/main/java/androidx/recyclerview/selection/SelectionTracker.java	2020-03-23 17:03:46.046122318 +0100
+++ app/src/main/java/androidx/recyclerview/selection/SelectionTracker.java	2020-04-24 21:08:55.544011257 +0200
@@ -503,7 +503,7 @@ public abstract class SelectionTracker<K
         private OnContextClickListener mOnContextClickListener;
 
         private BandPredicate mBandPredicate;
-        private int mBandOverlayId = R.drawable.selection_band_overlay;
+        private int mBandOverlayId = eu.faircode.email.R.drawable.selection_band_overlay;
 
         // TODO(b/144500333): Remove support for overriding gesture and pointer tooltypes.
         private int[] mGestureToolTypes = new int[]{
@@ -815,7 +815,11 @@ public abstract class SelectionTracker<K
                         @Override
                         public void run() {
                             if (mSelectionPredicate.canSelectMultiple()) {
-                                gestureHelper.start();
+                                try {
+                                    gestureHelper.start();
+                                } catch (Throwable ex) {
+                                    eu.faircode.email.Log.e(ex);
+                                }
                             }
                         }
                     },
--- a/app/src/main/java/androidx/recyclerview/selection/GestureRouter.java
+++ b/app/src/main/java/androidx/recyclerview/selection/GestureRouter.java
@@ -94,7 +94,28 @@ final class GestureRouter<T extends OnGestureListener & OnDoubleTapListener>
 
     @Override
     public void onLongPress(@NonNull MotionEvent e) {
-        mDelegates.get(e).onLongPress(e);
+        try {
+            mDelegates.get(e).onLongPress(e);
+        } catch (Throwable ex) {
+            eu.faircode.email.Log.w(ex);
+            /*
+                java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling eu.faircode.email.FixedRecyclerView{239c688b VFED.... ........ 0,0-800,1162 #7f0a04da app:id/rvMessage}, adapter:eu.faircode.email.AdapterMessage@209415c5, layout:eu.faircode.email.FragmentMessages$7@190d7b1a, context:eu.faircode.email.ActivityView@3e8522fb
+                        at androidx.recyclerview.widget.RecyclerView.assertNotInLayoutOrScroll(SourceFile:3)
+                        at androidx.recyclerview.widget.RecyclerView$RecyclerViewDataObserver.onItemRangeChanged(SourceFile:1)
+                        at androidx.recyclerview.widget.RecyclerView$AdapterDataObservable.notifyItemRangeChanged(SourceFile:3)
+                        at androidx.recyclerview.widget.RecyclerView$Adapter.notifyItemChanged(SourceFile:2)
+                        at androidx.recyclerview.selection.EventBridge$TrackerToAdapterBridge.onItemStateChanged(SourceFile:3)
+                        at androidx.recyclerview.selection.DefaultSelectionTracker.notifyItemStateChanged(SourceFile:3)
+                        at androidx.recyclerview.selection.DefaultSelectionTracker.select(SourceFile:8)
+                        at androidx.recyclerview.selection.MotionInputHandler.selectItem(SourceFile:4)
+                        at androidx.recyclerview.selection.TouchInputHandler.onLongPress(SourceFile:10)
+                        at androidx.recyclerview.selection.GestureRouter.onLongPress(SourceFile:1)
+                        at android.view.GestureDetector.dispatchLongPress(GestureDetector.java:700)
+                        at android.view.GestureDetector.access$200(GestureDetector.java:40)
+                        at android.view.GestureDetector$GestureHandler.handleMessage(GestureDetector.java:273)
+                        at android.os.Handler.dispatchMessage(Handler.java:102)
+             */
+        }
     }
 
     @Override