Hide/seen folder in main folder list

app/src/main/java/eu/faircode/email/AdapterFolder.java

@@ -236,8 +236,6 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
 
         private void bindTo(final TupleFolderEx folder) {
             boolean disabled = isDisabled(folder);
-            boolean hide_seen = (account < 0 && !primary &&
-                    folder.hide_seen && folder.unseen + folder.childs_unseen == 0);
 
             int p = 0;
             if (show_compact)
@@ -247,7 +245,7 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
                     p = dp3;
             view.setPadding(p, p, p, p);
             view.setActivated(folder.tbc != null || folder.rename != null || folder.tbd != null);
-            view.setAlpha(folder.hide || hide_seen || disabled ? Helper.LOW_LIGHT : 1.0f);
+            view.setAlpha(folder.hide || folder.isHidden() || disabled ? Helper.LOW_LIGHT : 1.0f);
 
             if (listener == null && selectedModel != null)
                 itemView.setBackgroundColor(
@@ -1379,7 +1377,7 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
         if (account < 0 && !primary) {
             List<TupleFolderEx> filtered = new ArrayList<>();
             for (TupleFolderEx folder : folders)
-                if (show_hidden || !folder.hide_seen || folder.unseen + folder.childs_unseen > 0)
+                if (show_hidden || !folder.isHidden())
                     filtered.add(folder);
 
             if (filtered.size() > 0)
@@ -1591,11 +1589,13 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
                     (parent.subscribed != null && parent.subscribed) ||
                     (childs != null && childs.size() > 0)) {
                 parent.indentation = indentation;
+                if (show_hidden || !parent.isHidden()) {
                     result.add(parent);
                     if (!parent.collapsed && childs != null)
                         result.addAll(childs);
                 }
             }
+        }
 
         return result;
     }

app/src/main/java/eu/faircode/email/DB.java

@@ -68,7 +68,7 @@ import javax.mail.internet.InternetAddress;
 // https://developer.android.com/topic/libraries/architecture/room.html
 
 @Database(
-        version = 260,
+        version = 261,
         entities = {
                 EntityIdentity.class,
                 EntityAccount.class,
@@ -2626,6 +2626,15 @@ public abstract class DB extends RoomDatabase {
                         logMigration(startVersion, endVersion);
                         db.execSQL("ALTER TABLE `rule` ADD COLUMN `daily` INTEGER NOT NULL DEFAULT 0");
                     }
+                }).addMigrations(new Migration(260, 261) {
+                    @Override
+                    public void migrate(@NonNull SupportSQLiteDatabase db) {
+                        logMigration(startVersion, endVersion);
+                        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+                        String startup = prefs.getString("startup", "unified");
+                        if (!"folders".equals(startup))
+                            db.execSQL("UPDATE `folder` SET `hide_seen` = 0");
+                    }
                 }).addMigrations(new Migration(998, 999) {
                     @Override
                     public void migrate(@NonNull SupportSQLiteDatabase db) {

app/src/main/java/eu/faircode/email/TupleFolderEx.java

@@ -63,6 +63,10 @@ public class TupleFolderEx extends EntityFolder implements Serializable {
     @Ignore
     public int childs_unseen = 0;
 
+    boolean isHidden() {
+        return (this.hide_seen && this.unseen + this.childs_unseen == 0);
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (obj instanceof TupleFolderEx) {

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

@@ -1200,7 +1200,7 @@
     <string name="title_edit_account_color">Edit account color</string>
     <string name="title_hide_folder">Hide folder</string>
     <string name="title_hide_seen_folder">Hide folder if all messages are read</string>
-    <string name="title_hide_seen_folder_hint">Only in the folder list shown on the start screen</string>
+    <string name="title_hide_seen_folder_hint">Only in the account and unified folder list</string>
     <string name="title_unified_folder">Show in unified inbox</string>
     <string name="title_navigation_folder">Show in navigation menu</string>
     <string name="title_navigation_folder_hide">Hide in navigation menu</string>