Allow to select all above in batch editor

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

@@ -1,5 +1,6 @@
 package de.danoeh.antennapod.dialog;
 
+import android.app.AlertDialog;
 import android.content.res.TypedArray;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
@@ -95,6 +96,28 @@ public class EpisodesApplyActionFragment extends Fragment {
             }
             refreshCheckboxes();
         });
+        mListView.setOnItemLongClickListener((adapterView, view12, position, id) -> {
+            new AlertDialog.Builder(getActivity())
+                    .setItems(R.array.batch_long_press_options, (dialogInterface, item) -> {
+                        int direction;
+                        if (item == 0) {
+                            direction = -1;
+                        } else {
+                            direction = 1;
+                        }
+
+                        int currentPosition = position + direction;
+                        while (currentPosition >= 0 && currentPosition < episodes.size()) {
+                            long id1 = episodes.get(currentPosition).getId();
+                            if (!checkedIds.contains(id1)) {
+                                checkedIds.add(id1);
+                            }
+                            currentPosition += direction;
+                        }
+                        refreshCheckboxes();
+                    }).show();
+            return true;
+        });
 
         for(FeedItem episode : episodes) {
             titles.add(episode.getTitle());

core/src/main/res/values/arrays.xml

@@ -272,4 +272,9 @@
         <item>stop</item>
         <item>continue</item>
     </string-array>
+
+    <string-array name="batch_long_press_options">
+        <item>@string/select_all_above</item>
+        <item>@string/select_all_below</item>
+    </string-array>
 </resources>

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

@@ -144,6 +144,8 @@
     <string name="load_complete_feed">Refresh complete podcast</string>
     <string name="hide_episodes_title">Hide Episodes</string>
     <string name="batch_edit">Batch edit</string>
+    <string name="select_all_above">Select all above</string>
+    <string name="select_all_below">Select all below</string>
     <string name="hide_unplayed_episodes_label">Unplayed</string>
     <string name="hide_paused_episodes_label">Paused</string>
     <string name="hide_played_episodes_label">Played</string>