Fix crash when entering conversation search through bottom sheet.

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationFragment.java

@@ -384,7 +384,7 @@ public class ConversationFragment extends LoggingFragment implements Multiselect
     initializeMessageRequestViewModel();
     initializeListAdapter();
 
-    // TODO [alex] LargeScreenSupport -- conversationViewModel.getSearchQuery().observe(getViewLifecycleOwner(), this::onSearchQueryUpdated);
+    conversationViewModel.getSearchQuery().observe(getViewLifecycleOwner(), this::onSearchQueryUpdated);
 
     return view;
   }
@@ -1161,7 +1161,7 @@ public class ConversationFragment extends LoggingFragment implements Multiselect
     return getListAdapter().isTypingViewEnabled();
   }
 
-  public void onSearchQueryUpdated(@Nullable String query) {
+  private void onSearchQueryUpdated(@Nullable String query) {
     if (getListAdapter() != null) {
       getListAdapter().onSearchQueryUpdated(query);
     }

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationParentFragment.java

@@ -1020,8 +1020,7 @@ public class ConversationParentFragment extends Fragment
       public boolean onQueryTextSubmit(String query) {
         searchViewModel.onQueryUpdated(query, threadId, true);
         searchNav.showLoading();
-        // TODO [alex] LargeScreenSupport -- Set search query on viewModel
-        fragment.onSearchQueryUpdated(query);
+        viewModel.setSearchQuery(query);
         return true;
       }
 
@@ -1029,8 +1028,7 @@ public class ConversationParentFragment extends Fragment
       public boolean onQueryTextChange(String query) {
         searchViewModel.onQueryUpdated(query, threadId, false);
         searchNav.showLoading();
-        // TODO [alex] LargeScreenSupport -- Set search query on viewModel
-        fragment.onSearchQueryUpdated(query);
+        viewModel.setSearchQuery(query);
         return true;
       }
     };
@@ -1059,8 +1057,7 @@ public class ConversationParentFragment extends Fragment
         searchViewModel.onSearchClosed();
         searchNav.setVisibility(View.GONE);
         inputPanel.setHideForSearch(false);
-        // TODO [alex] LargeScreenSupport -- Set search query on viewModel
-        fragment.onSearchQueryUpdated(null);
+        viewModel.setSearchQuery(null);
         setBlockedUserState(recipient.get(), isSecureText, isDefaultSms);
         invalidateOptionsMenu();
         return true;

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationViewModel.java

@@ -4,6 +4,7 @@ import android.app.Application;
 
 import androidx.annotation.MainThread;
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.LiveDataReactiveStreams;
 import androidx.lifecycle.MutableLiveData;
@@ -90,6 +91,7 @@ public class ConversationViewModel extends ViewModel {
   private final Store<ThreadAnimationState>         threadAnimationStateStore;
   private final Observer<ThreadAnimationState>      threadAnimationStateStoreDriver;
   private final NotificationProfilesRepository      notificationProfilesRepository;
+  private final MutableLiveData<String>             searchQuery;
 
   private final Map<GroupId, Set<Recipient>> sessionMemberCache = new HashMap<>();
 
@@ -115,6 +117,7 @@ public class ConversationViewModel extends ViewModel {
     this.conversationTopMargin          = Transformations.distinctUntilChanged(LiveDataUtil.combineLatest(toolbarBottom, inlinePlayerHeight, Integer::sum));
     this.threadAnimationStateStore      = new Store<>(new ThreadAnimationState(-1L, null, false));
     this.notificationProfilesRepository = new NotificationProfilesRepository();
+    this.searchQuery                    = new MutableLiveData<>();
 
     LiveData<Recipient>          recipientLiveData  = LiveDataUtil.mapAsync(recipientId, Recipient::resolved);
     LiveData<ThreadAndRecipient> threadAndRecipient = LiveDataUtil.combineLatest(threadId, recipientLiveData, ThreadAndRecipient::new);
@@ -243,6 +246,14 @@ public class ConversationViewModel extends ViewModel {
     this.threadId.postValue(-1L);
   }
 
+  void setSearchQuery(@Nullable String query) {
+    searchQuery.setValue(query);
+  }
+
+  @NonNull LiveData<String> getSearchQuery() {
+    return searchQuery;
+  }
+
   @NonNull LiveData<Integer> getConversationTopMargin() {
     return conversationTopMargin;
   }