Added template search

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

@@ -57,7 +57,9 @@ public class AdapterAnswer extends RecyclerView.Adapter<AdapterAnswer.ViewHolder
     private LifecycleOwner owner;
     private LayoutInflater inflater;
 
-    private List<EntityAnswer> items = new ArrayList<>();
+    private String search = null;
+    private List<EntityAnswer> all = new ArrayList<>();
+    private List<EntityAnswer> selected = new ArrayList<>();
 
     private boolean composable = false;
 
@@ -105,7 +107,7 @@ public class AdapterAnswer extends RecyclerView.Adapter<AdapterAnswer.ViewHolder
             if (pos == RecyclerView.NO_POSITION)
                 return;
 
-            EntityAnswer answer = items.get(pos);
+            EntityAnswer answer = selected.get(pos);
 
             LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(context);
             lbm.sendBroadcast(
@@ -119,7 +121,7 @@ public class AdapterAnswer extends RecyclerView.Adapter<AdapterAnswer.ViewHolder
             if (pos == RecyclerView.NO_POSITION)
                 return false;
 
-            final EntityAnswer answer = items.get(pos);
+            final EntityAnswer answer = selected.get(pos);
 
             PopupMenuLifecycle popupMenu = new PopupMenuLifecycle(context, powner, view);
 
@@ -235,9 +237,25 @@ public class AdapterAnswer extends RecyclerView.Adapter<AdapterAnswer.ViewHolder
     public void set(@NonNull List<EntityAnswer> answers) {
         Log.i("Set answers=" + answers.size());
 
-        DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new DiffCallback(items, answers), false);
+        all = answers;
 
-        items = answers;
+        List<EntityAnswer> items;
+        if (TextUtils.isEmpty(search))
+            items = all;
+        else {
+            items = new ArrayList<>();
+            String query = search.toLowerCase().trim();
+            for (EntityAnswer answer : answers) {
+                if (answer.name.toLowerCase().contains(query) ||
+                        (answer.group != null && answer.group.toLowerCase().contains(query)) ||
+                        answer.text.toLowerCase().contains(query))
+                    items.add(answer);
+            }
+        }
+
+        DiffUtil.DiffResult diff = DiffUtil.calculateDiff(new DiffCallback(selected, items), false);
+
+        selected = items;
 
         diff.dispatchUpdatesTo(new ListUpdateCallback() {
             @Override
@@ -263,6 +281,11 @@ public class AdapterAnswer extends RecyclerView.Adapter<AdapterAnswer.ViewHolder
         diff.dispatchUpdatesTo(this);
     }
 
+    public void search(String query) {
+        search = query;
+        set(all);
+    }
+
     private static class DiffCallback extends DiffUtil.Callback {
         private List<EntityAnswer> prev = new ArrayList<>();
         private List<EntityAnswer> next = new ArrayList<>();
@@ -299,12 +322,12 @@ public class AdapterAnswer extends RecyclerView.Adapter<AdapterAnswer.ViewHolder
 
     @Override
     public long getItemId(int position) {
-        return items.get(position).id;
+        return selected.get(position).id;
     }
 
     @Override
     public int getItemCount() {
-        return items.size();
+        return selected.size();
     }
 
     @Override
@@ -315,7 +338,7 @@ public class AdapterAnswer extends RecyclerView.Adapter<AdapterAnswer.ViewHolder
 
     @Override
     public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
-        EntityAnswer answer = items.get(position);
+        EntityAnswer answer = selected.get(position);
         holder.powner.recreate(answer == null ? null : answer.id);
 
         holder.unwire();

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

@@ -21,12 +21,17 @@ package eu.faircode.email;
 
 import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.text.TextUtils;
 import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.appcompat.widget.SearchView;
 import androidx.constraintlayout.widget.Group;
 import androidx.core.content.ContextCompat;
 import androidx.fragment.app.FragmentTransaction;
@@ -50,6 +55,7 @@ public class FragmentAnswers extends FragmentBase {
     private Group grpReady;
     private FloatingActionButton fab;
 
+    private String searching = null;
     private AdapterAnswer adapter;
 
     @Override
@@ -112,10 +118,21 @@ public class FragmentAnswers extends FragmentBase {
         return view;
     }
 
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        outState.putString("fair:searching", searching);
+        super.onSaveInstanceState(outState);
+    }
+
     @Override
     public void onActivityCreated(@Nullable Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
+        if (savedInstanceState != null) {
+            searching = savedInstanceState.getString("fair:searching");
+            adapter.search(searching);
+        }
+
         DB db = DB.getInstance(getContext());
         db.answer().liveAnswers().observe(getViewLifecycleOwner(), new Observer<List<EntityAnswer>>() {
             @Override
@@ -130,4 +147,36 @@ public class FragmentAnswers extends FragmentBase {
             }
         });
     }
+
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        inflater.inflate(R.menu.menu_answers, menu);
+
+        MenuItem menuSearch = menu.findItem(R.id.menu_search);
+        SearchView searchView = (SearchView) menuSearch.getActionView();
+        searchView.setQueryHint(getString(R.string.title_rules_search_hint));
+
+        if (!TextUtils.isEmpty(searching)) {
+            menuSearch.expandActionView();
+            searchView.setQuery(searching, true);
+        }
+
+        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
+            @Override
+            public boolean onQueryTextChange(String newText) {
+                searching = newText;
+                adapter.search(newText);
+                return true;
+            }
+
+            @Override
+            public boolean onQueryTextSubmit(String query) {
+                searching = query;
+                adapter.search(query);
+                return true;
+            }
+        });
+
+        super.onCreateOptionsMenu(menu, inflater);
+    }
 }

app/src/main/res/menu/menu_answers.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/menu_search"
+        android:icon="@drawable/twotone_search_24"
+        android:title="@string/title_search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="collapseActionView|always" />
+</menu>