Classification requires download

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

@@ -6478,16 +6478,35 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                             SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
 
                             DB db = DB.getInstance(context);
+
                             EntityFolder inbox = db.folder().getFolderByType(account, EntityFolder.INBOX);
+                            if (inbox == null)
+                                return null;
+
                             EntityFolder junk = db.folder().getFolderByType(account, EntityFolder.JUNK);
-                            if (inbox != null && junk != null) {
+                            if (junk == null)
+                                return null;
+
+                            try {
+                                db.beginTransaction();
+
+                                db.folder().setFolderDownload(
+                                        inbox.id, inbox.download || filter);
                                 db.folder().setFolderAutoClassify(
                                         inbox.id, inbox.auto_classify_source || filter, inbox.auto_classify_target);
+
+                                db.folder().setFolderDownload(
+                                        junk.id, junk.download || filter);
                                 db.folder().setFolderAutoClassify(
                                         junk.id, junk.auto_classify_source || filter, filter);
-                                prefs.edit().putBoolean("classification", true).apply();
+
+                                db.setTransactionSuccessful();
+                            } finally {
+                                db.endTransaction();
                             }
 
+                            prefs.edit().putBoolean("classification", true).apply();
+
                             return null;
                         }
 
@@ -6531,8 +6550,8 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                         return false;
 
                     return (classification &&
-                            inbox.auto_classify_source &&
-                            junk.auto_classify_source && junk.auto_classify_target);
+                            inbox.download && inbox.auto_classify_source &&
+                            junk.download && junk.auto_classify_source && junk.auto_classify_target);
                 }
 
                 @Override

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

@@ -346,6 +346,9 @@ public interface DaoFolder {
     @Query("UPDATE folder SET poll_count = :count WHERE id = :id AND NOT (poll_count IS :count)")
     int setFolderPollCount(long id, int count);
 
+    @Query("UPDATE folder SET download = :download WHERE id = :id AND NOT (download IS :download)")
+    int setFolderDownload(long id, boolean download);
+
     @Query("UPDATE folder" +
             " SET auto_classify_source = :source, auto_classify_target = :target" +
             " WHERE id = :id" +

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

@@ -181,19 +181,18 @@ public class FragmentFolder extends FragmentBase {
             }
         });
 
-        cbAutoClassifySource.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+        cbDownload.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
-                if (isChecked)
-                    cbDownload.setChecked(true);
+                cbAutoClassifySource.setEnabled(isChecked);
+                cbAutoClassifyTarget.setEnabled(isChecked && cbAutoClassifySource.isChecked());
             }
         });
 
-        cbAutoClassifyTarget.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+        cbAutoClassifySource.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
-                if (isChecked)
-                    cbAutoClassifySource.setChecked(true);
+                cbAutoClassifyTarget.setEnabled(isChecked);
             }
         });
 
@@ -334,7 +333,8 @@ public class FragmentFolder extends FragmentBase {
                 etPoll.setEnabled(cbSynchronize.isChecked() && always);
                 tvPoll.setEnabled(cbSynchronize.isChecked() && always);
                 grpPoll.setVisibility(imap && cbPoll.isEnabled() && cbPoll.isChecked() ? View.VISIBLE : View.GONE);
-                cbAutoClassifyTarget.setEnabled(pro);
+                cbAutoClassifySource.setEnabled(cbDownload.isChecked());
+                cbAutoClassifyTarget.setEnabled(cbDownload.isChecked() && cbAutoClassifySource.isChecked());
                 cbAutoClassifySource.setVisibility(canAutoClassify ? View.VISIBLE : View.GONE);
                 cbAutoClassifyTarget.setVisibility(canAutoClassify ? View.VISIBLE : View.GONE);
                 tvAutoClassifyPro.setVisibility(canAutoClassify && !pro ? View.VISIBLE : View.GONE);