Show folder keywords

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

@@ -24,6 +24,7 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.graphics.Typeface;
 import android.os.Bundle;
+import android.text.TextUtils;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -57,15 +58,16 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
     private List<TupleFolderEx> filtered = new ArrayList<>();
 
     public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener {
-        View itemView;
-        ImageView ivState;
-        TextView tvName;
-        TextView tvMessages;
-        ImageView ivUnified;
-        TextView tvType;
-        TextView tvAfter;
-        ImageView ivSync;
-        TextView tvError;
+        private View itemView;
+        private ImageView ivState;
+        private TextView tvName;
+        private TextView tvMessages;
+        private ImageView ivUnified;
+        private TextView tvType;
+        private TextView tvAfter;
+        private ImageView ivSync;
+        private TextView tvKeywords;
+        private TextView tvError;
 
         private final static int action_synchronize_now = 1;
         private final static int action_delete_local = 2;
@@ -84,6 +86,7 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
             tvType = itemView.findViewById(R.id.tvType);
             tvAfter = itemView.findViewById(R.id.tvAfter);
             ivSync = itemView.findViewById(R.id.ivSync);
+            tvKeywords = itemView.findViewById(R.id.tvKeywords);
             tvError = itemView.findViewById(R.id.tvError);
         }
 
@@ -142,6 +145,9 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
                 ivSync.setImageResource(folder.synchronize ? R.drawable.baseline_sync_24 : R.drawable.baseline_sync_disabled_24);
             }
 
+            tvKeywords.setText(TextUtils.join(" ", folder.keywords));
+            tvKeywords.setVisibility(folder.keywords.length > 0 ? View.VISIBLE : View.GONE);
+
             tvError.setText(folder.error);
             tvError.setVisibility(folder.error != null && BuildConfig.DEBUG ? View.VISIBLE : View.GONE);
         }
@@ -321,7 +327,7 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
 
     private boolean showAll = false;
 
-    public void showHidden(boolean show) {
+    void showHidden(boolean show) {
         showAll = show;
         set(all);
     }
@@ -385,7 +391,7 @@ public class AdapterFolder extends RecyclerView.Adapter<AdapterFolder.ViewHolder
         diff.dispatchUpdatesTo(this);
     }
 
-    public void setAccountState(String state) {
+    void setAccountState(String state) {
         this.accountState = state;
     }
 

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

@@ -46,7 +46,7 @@ import io.requery.android.database.sqlite.RequerySQLiteOpenHelperFactory;
 // https://developer.android.com/topic/libraries/architecture/room.html
 
 @Database(
-        version = 8,
+        version = 9,
         entities = {
                 EntityIdentity.class,
                 EntityAccount.class,
@@ -177,6 +177,13 @@ public abstract class DB extends RoomDatabase {
                         db.execSQL("ALTER TABLE `message` ADD COLUMN `keywords` TEXT");
                     }
                 })
+                .addMigrations(new Migration(8, 9) {
+                    @Override
+                    public void migrate(SupportSQLiteDatabase db) {
+                        Log.i(Helper.TAG, "DB migration from version " + startVersion + " to " + endVersion);
+                        db.execSQL("ALTER TABLE `folder` ADD COLUMN `keywords` TEXT");
+                    }
+                })
                 .build();
     }
 

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

@@ -134,6 +134,9 @@ public interface DaoFolder {
             " WHERE id = :id")
     int setFolderProperties(long id, String name, String display, boolean hide, boolean synchronize, boolean unified, int sync_days, int keep_days);
 
+    @Query("UPDATE folder SET keywords = :keywords WHERE id = :id")
+    int setFolderKeywords(long id, String keywords);
+
     @Query("UPDATE folder SET name = :name WHERE account = :account AND name = :old")
     int renameFolder(long account, String old, String name);
 

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

@@ -73,6 +73,7 @@ public class EntityFolder implements Serializable {
     public Boolean hide = false;
     @NonNull
     public Boolean unified = false;
+    public String[] keywords;
     public String state;
     public String error;
 

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

@@ -846,6 +846,12 @@ public class ServiceSynchronize extends LifecycleService {
                         db.folder().setFolderState(folder.id, "connected");
                         db.folder().setFolderError(folder.id, null);
 
+                        List<String> keywords = new ArrayList<>();
+                        for (String keyword : ifolder.getPermanentFlags().getUserFlags())
+                            if (!keyword.startsWith("$"))
+                                keywords.add(keyword);
+                        db.folder().setFolderKeywords(folder.id, DB.Converters.fromStringArray(keywords.toArray(new String[0])));
+
                         Log.i(Helper.TAG, account.name + " folder " + folder.name + " flags=" + ifolder.getPermanentFlags());
 
                         // Synchronize folder