Show if folder read only

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

@@ -89,6 +89,7 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
         private View view;
         private View vwColor;
         private ImageView ivState;
+        private ImageView ivReadOnly;
         private View vwLevel;
         private ImageView ivExpander;
         private ImageView ivNotify;
@@ -122,6 +123,7 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
             view = itemView.findViewById(R.id.clItem);
             vwColor = itemView.findViewById(R.id.vwColor);
             ivState = itemView.findViewById(R.id.ivState);
+            ivReadOnly = itemView.findViewById(R.id.ivReadOnly);
             vwLevel = itemView.findViewById(R.id.vwLevel);
             ivExpander = itemView.findViewById(R.id.ivExpander);
             ivNotify = itemView.findViewById(R.id.ivNotify);
@@ -222,6 +224,8 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
                     folder.synchronize || folder.state != null || folder.sync_state != null
                             ? View.VISIBLE : View.INVISIBLE);
 
+            ivReadOnly.setVisibility(folder.read_only ? View.VISIBLE : View.GONE);
+
             ViewGroup.LayoutParams lp = vwLevel.getLayoutParams();
             lp.width = (account < 0 || !collapsable ? 1 : level) * dp12;
             vwLevel.setLayoutParams(lp);

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

@@ -51,7 +51,7 @@ import io.requery.android.database.sqlite.RequerySQLiteOpenHelperFactory;
 // https://developer.android.com/topic/libraries/architecture/room.html
 
 @Database(
-        version = 76,
+        version = 77,
         entities = {
                 EntityIdentity.class,
                 EntityAccount.class,
@@ -780,6 +780,13 @@ public abstract class DB extends RoomDatabase {
                         db.execSQL("ALTER TABLE `folder` ADD COLUMN `order` INTEGER");
                     }
                 })
+                .addMigrations(new Migration(76, 77) {
+                    @Override
+                    public void migrate(SupportSQLiteDatabase db) {
+                        Log.i("DB migration from version " + startVersion + " to " + endVersion);
+                        db.execSQL("ALTER TABLE `folder` ADD COLUMN `read_only` INTEGER NOT NULL DEFAULT 0");
+                    }
+                })
                 .build();
     }
 

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

@@ -222,6 +222,9 @@ public interface DaoFolder {
     @Query("UPDATE folder SET last_sync = :last_sync WHERE id = :id")
     int setFolderSync(long id, long last_sync);
 
+    @Query("UPDATE folder SET read_only = :read_only WHERE id = :id")
+    int setFolderReadOnly(long id, boolean read_only);
+
     @Query("UPDATE folder SET `order` = NULL")
     int resetFolderOrder();
 

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

@@ -105,6 +105,8 @@ public class EntityFolder implements Serializable {
     public Boolean tbd; // to be deleted
     public String state;
     public String sync_state;
+    @NonNull
+    public Boolean read_only = false;
     public String error;
     public Long last_sync;
 

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

@@ -665,10 +665,16 @@ public class ServiceSynchronize extends LifecycleService {
 
                             final IMAPFolder ifolder = (IMAPFolder) istore.getFolder(folder.name);
                             try {
+                                //if ("Postausgang".equals(folder.name))
+                                //    throw new ReadOnlyFolderException(ifolder);
                                 ifolder.open(Folder.READ_WRITE);
+                                db.folder().setFolderReadOnly(folder.id, false);
                             } catch (ReadOnlyFolderException ex) {
+                                Log.w(folder.name + " read only");
+                                db.folder().setFolderError(folder.id, Helper.formatThrowable(ex, true));
                                 try {
                                     ifolder.open(Folder.READ_ONLY);
+                                    db.folder().setFolderReadOnly(folder.id, true);
                                 } catch (MessagingException ex1) {
                                     Log.w(ex1);
                                     db.folder().setFolderState(folder.id, null);

app/src/main/res/layout/item_folder.xml

@@ -30,6 +30,15 @@
             app:layout_constraintStart_toEndOf="@id/vwColor"
             app:layout_constraintTop_toTopOf="@+id/tvName" />
 
+        <ImageView
+            android:id="@+id/ivReadOnly"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:layout_marginStart="6dp"
+            android:src="@drawable/baseline_visibility_24"
+            app:layout_constraintStart_toEndOf="@id/vwColor"
+            app:layout_constraintTop_toTopOf="@+id/tvType" />
+
         <View
             android:id="@+id/vwLevel"
             android:layout_width="0dp"