Allow to choose from existing tags/folders in folder settings dialog (#5245)

app/src/main/java/de/danoeh/antennapod/dialog/TagSettingsDialog.java

@@ -3,7 +3,11 @@ package de.danoeh.antennapod.dialog;
 import android.app.Dialog;
 import android.os.Bundle;
 import android.text.TextUtils;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.View;
 import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
@@ -12,10 +16,15 @@ import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 import com.google.android.material.chip.Chip;
 import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.core.storage.DBReader;
+import de.danoeh.antennapod.core.storage.NavDrawerData;
 import de.danoeh.antennapod.model.feed.FeedPreferences;
 import de.danoeh.antennapod.core.storage.DBWriter;
 import de.danoeh.antennapod.databinding.EditTagsDialogBinding;
 import de.danoeh.antennapod.view.ItemOffsetDecoration;
+import io.reactivex.Observable;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.schedulers.Schedulers;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -53,6 +62,17 @@ public class TagSettingsDialog extends DialogFragment {
         viewBinding.newTagButton.setOnClickListener(v ->
                 addTag(viewBinding.newTagEditText.getText().toString().trim()));
 
+        loadTags();
+        viewBinding.newTagEditText.setThreshold(1);
+        viewBinding.newTagEditText.setOnTouchListener(new View.OnTouchListener() {
+            @Override
+            public boolean onTouch(View v, MotionEvent event) {
+                viewBinding.newTagEditText.showDropDown();
+                viewBinding.newTagEditText.requestFocus();
+                return false;
+            }
+        });
+
         AlertDialog.Builder dialog = new AlertDialog.Builder(getContext());
         dialog.setView(viewBinding.getRoot());
         dialog.setTitle(R.string.feed_folders_label);
@@ -69,6 +89,31 @@ public class TagSettingsDialog extends DialogFragment {
         return dialog.create();
     }
 
+    private void loadTags() {
+        Observable.fromCallable(
+                () -> {
+                    NavDrawerData data = DBReader.getNavDrawerData();
+                    List<NavDrawerData.DrawerItem> items = data.items;
+                    List<String> folders = new ArrayList<String>();
+                    for (NavDrawerData.DrawerItem item : items) {
+                        if (item.type == NavDrawerData.DrawerItem.Type.FOLDER) {
+                            folders.add(item.getTitle());
+                        }
+                    }
+                    return folders;
+                })
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(
+                        result -> {
+                            ArrayAdapter<String> acAdapter = new ArrayAdapter<String>(getContext(),
+                                    R.layout.single_tag_text_view, result);
+                            viewBinding.newTagEditText.setAdapter(acAdapter);
+                        }, error -> {
+                            Log.e(TAG, Log.getStackTraceString(error));
+                        });
+    }
+
     private void addTag(String name) {
         if (TextUtils.isEmpty(name) || displayedTags.contains(name)) {
             return;

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

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
@@ -22,20 +23,21 @@
         android:layout_height="wrap_content"
         android:orientation="horizontal">
 
-        <EditText
+        <AutoCompleteTextView
+            android:id="@+id/newTagEditText"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:inputType="text"
-                android:ems="10"
-                android:id="@+id/newTagEditText"/>
+            android:ems="10" />
 
         <ImageButton
+            android:id="@+id/newTagButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-                app:srcCompat="@drawable/ic_add"
             android:contentDescription="@string/new_label"
-                android:id="@+id/newTagButton"/>
+            app:srcCompat="@drawable/ic_add" />
+
     </LinearLayout>
 
 </LinearLayout>

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

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:scrollbars="vertical"
+    android:padding="10dp"
+    android:ems="10" />