Add an empty state for search

res/layout/conversation_list_fragment.xml

@@ -7,6 +7,16 @@
         android:layout_height="fill_parent"
         android:orientation="vertical">
 
+    <TextView android:id="@+id/empty_search"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content"
+              android:layout_marginTop="100dp"
+              android:gravity="center"
+              android:textSize="18sp"
+              android:padding="16dp"
+              android:visibility="invisible"
+              tools:text="No results found for 'foo'"/>
+
     <FrameLayout android:id="@+id/empty_state"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"

res/values/strings.xml

@@ -1493,6 +1493,7 @@
     <string name="conversation_list_fragment__give_your_inbox_something_to_write_home_about_get_started_by_messaging_a_friend">Give your inbox something to write home about. Get started by messaging a friend.</string>
     <string name="conversation_list_item_inbox_zero__inbox_zeeerrro">Inbox zeeerrro</string>
     <string name="conversation_list_item_inbox_zero__zip_zilch_zero_nada_nyou_re_all_caught_up">Zip. Zilch. Zero. Nada. You\'re all caught up!</string>
+    <string name="ConversationListFragment_no_results_found_for_s_">No results found for \'%s\'</string>
 
 
     <!-- EOF -->

src/org/thoughtcrime/securesms/ConversationListActivity.java

@@ -16,6 +16,7 @@
  */
 package org.thoughtcrime.securesms;
 
+import android.annotation.SuppressLint;
 import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
@@ -209,6 +210,7 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
     startActivity(new Intent(this, ImportExportActivity.class));
   }
 
+  @SuppressLint("StaticFieldLeak")
   private void handleMarkAllRead() {
     new AsyncTask<Void, Void, Void>() {
       @Override

src/org/thoughtcrime/securesms/ConversationListFragment.java

@@ -48,6 +48,7 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.TextView;
 
 import org.thoughtcrime.securesms.ConversationListAdapter.ItemClickListener;
 import org.thoughtcrime.securesms.components.recyclerview.DeleteItemAnimator;
@@ -91,6 +92,7 @@ public class ConversationListFragment extends Fragment
   private RecyclerView                list;
   private ReminderView                reminderView;
   private View                        emptyState;
+  private TextView                    emptySearch;
   private PulsingFloatingActionButton fab;
   private Locale                      locale;
   private String                      queryFilter  = "";
@@ -112,6 +114,7 @@ public class ConversationListFragment extends Fragment
     list         = ViewUtil.findById(view, R.id.list);
     fab          = ViewUtil.findById(view, R.id.fab);
     emptyState   = ViewUtil.findById(view, R.id.empty_state);
+    emptySearch  = ViewUtil.findById(view, R.id.empty_search);
 
     if (archive) fab.setVisibility(View.GONE);
     else         fab.setVisibility(View.VISIBLE);
@@ -318,13 +321,20 @@ public class ConversationListFragment extends Fragment
 
   @Override
   public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) {
-    if (cursor == null || cursor.getCount() <= 0) {
+    if ((cursor == null || cursor.getCount() <= 0) && TextUtils.isEmpty(queryFilter) && !archive) {
       list.setVisibility(View.INVISIBLE);
       emptyState.setVisibility(View.VISIBLE);
+      emptySearch.setVisibility(View.INVISIBLE);
       fab.startPulse(3 * 1000);
+    } else if ((cursor == null || cursor.getCount() <= 0) && !TextUtils.isEmpty(queryFilter)) {
+      list.setVisibility(View.INVISIBLE);
+      emptyState.setVisibility(View.GONE);
+      emptySearch.setVisibility(View.VISIBLE);
+      emptySearch.setText(getString(R.string.ConversationListFragment_no_results_found_for_s_, queryFilter));
     } else {
       list.setVisibility(View.VISIBLE);
       emptyState.setVisibility(View.GONE);
+      emptySearch.setVisibility(View.INVISIBLE);
       fab.stopPulse();
     }