Adds top level navigation and placeholder fragments.

Android/app/src/main/java/com/majinnaibu/monstercards/MainActivity.java

@@ -31,7 +31,10 @@ public class MainActivity extends AppCompatActivity {
         // Passing each menu ID as a set of Ids because each
         // menu should be considered as top level destinations.
         AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
-                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
+                R.id.navigation_search,
+                R.id.navigation_dashboard,
+                R.id.navigation_collections,
+                R.id.navigation_library)
                 .build();
         NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
         NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);

Android/app/src/main/java/com/majinnaibu/monstercards/ui/collections/CollectionsFragment.java

@@ -7,21 +7,29 @@ import android.view.ViewGroup;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
-import androidx.lifecycle.ViewModelProvider;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProviders;
 
 import com.majinnaibu.monstercards.R;
-import com.majinnaibu.monstercards.ui.shared.MCFragment;
 
-public class CollectionsFragment extends MCFragment {
+public class CollectionsFragment extends Fragment {
 
     private CollectionsViewModel collectionsViewModel;
 
     public View onCreateView(@NonNull LayoutInflater inflater,
                              ViewGroup container, Bundle savedInstanceState) {
-        collectionsViewModel = new ViewModelProvider(this).get(CollectionsViewModel.class);
+        collectionsViewModel =
+                ViewModelProviders.of(this).get(CollectionsViewModel.class);
         View root = inflater.inflate(R.layout.fragment_collections, container, false);
         final TextView textView = root.findViewById(R.id.text_collections);
-        collectionsViewModel.getText().observe(getViewLifecycleOwner(), textView::setText);
+        collectionsViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
+            @Override
+            public void onChanged(@Nullable String s) {
+                textView.setText(s);
+            }
+        });
         return root;
     }
-}
+}

Android/app/src/main/java/com/majinnaibu/monstercards/ui/collections/CollectionsViewModel.java

@@ -6,7 +6,7 @@ import androidx.lifecycle.ViewModel;
 
 public class CollectionsViewModel extends ViewModel {
 
-    private final MutableLiveData<String> mText;
+    private MutableLiveData<String> mText;
 
     public CollectionsViewModel() {
         mText = new MutableLiveData<>();

Android/app/src/main/java/com/majinnaibu/monstercards/ui/home/HomeFragment.java

@@ -1,35 +0,0 @@
-package com.majinnaibu.monstercards.ui.home;
-
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.TextView;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.fragment.app.Fragment;
-import androidx.lifecycle.Observer;
-import androidx.lifecycle.ViewModelProviders;
-
-import com.majinnaibu.monstercards.R;
-
-public class HomeFragment extends Fragment {
-
-    private HomeViewModel homeViewModel;
-
-    public View onCreateView(@NonNull LayoutInflater inflater,
-                             ViewGroup container, Bundle savedInstanceState) {
-        homeViewModel =
-                ViewModelProviders.of(this).get(HomeViewModel.class);
-        View root = inflater.inflate(R.layout.fragment_home, container, false);
-        final TextView textView = root.findViewById(R.id.text_home);
-        homeViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
-            @Override
-            public void onChanged(@Nullable String s) {
-                textView.setText(s);
-            }
-        });
-        return root;
-    }
-}

Android/app/src/main/java/com/majinnaibu/monstercards/ui/library/LibraryFragment.java

@@ -1,121 +1,35 @@
 package com.majinnaibu.monstercards.ui.library;
 
-import android.content.Context;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.TextView;
 
 import androidx.annotation.NonNull;
-import androidx.navigation.NavDirections;
-import androidx.navigation.Navigation;
-import androidx.recyclerview.widget.DividerItemDecoration;
-import androidx.recyclerview.widget.ItemTouchHelper;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProviders;
 
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
-import com.google.android.material.snackbar.Snackbar;
 import com.majinnaibu.monstercards.R;
-import com.majinnaibu.monstercards.data.MonsterRepository;
-import com.majinnaibu.monstercards.models.Monster;
-import com.majinnaibu.monstercards.ui.shared.MCFragment;
-import com.majinnaibu.monstercards.ui.shared.SwipeToDeleteCallback;
-import com.majinnaibu.monstercards.utils.Logger;
 
-import java.util.UUID;
+public class LibraryFragment extends Fragment {
 
-import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
-import io.reactivex.rxjava3.observers.DisposableCompletableObserver;
-import io.reactivex.rxjava3.schedulers.Schedulers;
-
-public class LibraryFragment extends MCFragment {
+    private LibraryViewModel libraryViewModel;
 
     public View onCreateView(@NonNull LayoutInflater inflater,
                              ViewGroup container, Bundle savedInstanceState) {
+        libraryViewModel =
+                ViewModelProviders.of(this).get(LibraryViewModel.class);
         View root = inflater.inflate(R.layout.fragment_library, container, false);
-
-        FloatingActionButton fab = root.findViewById(R.id.fab);
-        assert fab != null;
-        setupAddMonsterButton(fab);
-
-        final RecyclerView recyclerView = root.findViewById(R.id.monster_list);
-        assert recyclerView != null;
-        setupRecyclerView(recyclerView);
-
+        final TextView textView = root.findViewById(R.id.text_library);
+        libraryViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
+            @Override
+            public void onChanged(@Nullable String s) {
+                textView.setText(s);
+            }
+        });
         return root;
     }
-
-    private void setupRecyclerView(@NonNull RecyclerView recyclerView) {
-        Context context = requireContext();
-        MonsterRepository repository = this.getMonsterRepository();
-
-        LibraryRecyclerViewAdapter adapter = new LibraryRecyclerViewAdapter(
-                context,
-                repository.getMonsters(),
-                (monster) -> navigateToMonsterDetail(monster.id),
-                (monster) -> repository
-                        .deleteMonster(monster)
-                        .subscribeOn(Schedulers.io())
-                        .observeOn(AndroidSchedulers.mainThread())
-                        .subscribe(new DisposableCompletableObserver() {
-                            @Override
-                            public void onComplete() {
-                            }
-
-                            @Override
-                            public void onError(@io.reactivex.rxjava3.annotations.NonNull Throwable e) {
-                                Logger.logError(e);
-                            }
-                        }));
-        recyclerView.setAdapter(adapter);
-
-        LinearLayoutManager layoutManager = new LinearLayoutManager(context);
-        recyclerView.setLayoutManager(layoutManager);
-
-        DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(context, layoutManager.getOrientation());
-        recyclerView.addItemDecoration(dividerItemDecoration);
-
-        ItemTouchHelper itemTouchHelper = new ItemTouchHelper(new SwipeToDeleteCallback(requireContext(), (position, direction) -> adapter.deleteItem(position), null));
-        itemTouchHelper.attachToRecyclerView(recyclerView);
-    }
-
-    private void setupAddMonsterButton(@NonNull FloatingActionButton fab) {
-        fab.setOnClickListener(view -> {
-            Monster monster = new Monster();
-            monster.name = getString(R.string.default_monster_name);
-            MonsterRepository repository = this.getMonsterRepository();
-            repository.addMonster(monster)
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(AndroidSchedulers.mainThread())
-                    .subscribe(
-                            new DisposableCompletableObserver() {
-                                @Override
-                                public void onComplete() {
-                                    View view = getView();
-                                    assert view != null;
-                                    Snackbar.make(
-                                            view,
-                                            getString(R.string.snackbar_monster_created, monster.name),
-                                            Snackbar.LENGTH_LONG)
-                                            .setAction("Action", (_view) -> navigateToMonsterDetail(monster.id))
-                                            .show();
-                                }
-
-                                @Override
-                                public void onError(@io.reactivex.rxjava3.annotations.NonNull Throwable e) {
-                                    Logger.logError("Error creating monster", e);
-                                    View view = getView();
-                                    assert view != null;
-                                    Snackbar.make(view, getString(R.string.snackbar_failed_to_create_monster), Snackbar.LENGTH_LONG)
-                                            .setAction("Action", null).show();
-                                }
-                            });
-        });
-    }
-
-    protected void navigateToMonsterDetail(@NonNull UUID monsterId) {
-        NavDirections action = LibraryFragmentDirections.actionNavigationLibraryToNavigationMonster(monsterId.toString());
-        Navigation.findNavController(requireView()).navigate(action);
-    }
 }

Android/app/src/main/java/com/majinnaibu/monstercards/ui/library/LibraryViewModel.java

@@ -1,19 +1,19 @@
-package com.majinnaibu.monstercards.ui.notifications;
+package com.majinnaibu.monstercards.ui.library;
 
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
-public class NotificationsViewModel extends ViewModel {
+public class LibraryViewModel extends ViewModel {
 
     private MutableLiveData<String> mText;
 
-    public NotificationsViewModel() {
+    public LibraryViewModel() {
         mText = new MutableLiveData<>();
-        mText.setValue("This is notifications fragment");
+        mText.setValue("This is library fragment");
     }
 
     public LiveData<String> getText() {
         return mText;
     }
-}
+}

Android/app/src/main/java/com/majinnaibu/monstercards/ui/notifications/NotificationsFragment.java

@@ -1,35 +0,0 @@
-package com.majinnaibu.monstercards.ui.notifications;
-
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.TextView;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.fragment.app.Fragment;
-import androidx.lifecycle.Observer;
-import androidx.lifecycle.ViewModelProviders;
-
-import com.majinnaibu.monstercards.R;
-
-public class NotificationsFragment extends Fragment {
-
-    private NotificationsViewModel notificationsViewModel;
-
-    public View onCreateView(@NonNull LayoutInflater inflater,
-                             ViewGroup container, Bundle savedInstanceState) {
-        notificationsViewModel =
-                ViewModelProviders.of(this).get(NotificationsViewModel.class);
-        View root = inflater.inflate(R.layout.fragment_notifications, container, false);
-        final TextView textView = root.findViewById(R.id.text_notifications);
-        notificationsViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
-            @Override
-            public void onChanged(@Nullable String s) {
-                textView.setText(s);
-            }
-        });
-        return root;
-    }
-}

Android/app/src/main/java/com/majinnaibu/monstercards/ui/search/SearchFragment.java

@@ -1,53 +1,35 @@
 package com.majinnaibu.monstercards.ui.search;
 
 import android.os.Bundle;
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProviders;
 
 import com.majinnaibu.monstercards.R;
-import com.majinnaibu.monstercards.data.MonsterRepository;
-import com.majinnaibu.monstercards.ui.shared.MCFragment;
 
-public class SearchFragment extends MCFragment {
+public class SearchFragment extends Fragment {
+
+    private SearchViewModel searchViewModel;
 
     public View onCreateView(@NonNull LayoutInflater inflater,
                              ViewGroup container, Bundle savedInstanceState) {
+        searchViewModel =
+                ViewModelProviders.of(this).get(SearchViewModel.class);
         View root = inflater.inflate(R.layout.fragment_search, container, false);
-        MonsterRepository repository = this.getMonsterRepository();
-        SearchResultsRecyclerViewAdapter adapter = new SearchResultsRecyclerViewAdapter(repository, null);
-        final RecyclerView recyclerView = root.findViewById(R.id.monster_list);
-        assert recyclerView != null;
-        setupRecyclerView(recyclerView, adapter);
-
-        final TextView textView = root.findViewById(R.id.search_query);
-        textView.addTextChangedListener(new TextWatcher() {
+        final TextView textView = root.findViewById(R.id.text_search);
+        searchViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
             @Override
-            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
-            }
-
-            @Override
-            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
-            }
-
-            @Override
-            public void afterTextChanged(Editable editable) {
-                adapter.doSearch(textView.getText().toString());
+            public void onChanged(@Nullable String s) {
+                textView.setText(s);
             }
         });
-
         return root;
     }
-
-    private void setupRecyclerView(@NonNull RecyclerView recyclerView, @NonNull SearchResultsRecyclerViewAdapter adapter) {
-        recyclerView.setAdapter(adapter);
-        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
-    }
 }

Android/app/src/main/java/com/majinnaibu/monstercards/ui/search/SearchViewModel.java

@@ -1,16 +1,16 @@
-package com.majinnaibu.monstercards.ui.home;
+package com.majinnaibu.monstercards.ui.search;
 
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
-public class HomeViewModel extends ViewModel {
+public class SearchViewModel extends ViewModel {
 
     private MutableLiveData<String> mText;
 
-    public HomeViewModel() {
+    public SearchViewModel() {
         mText = new MutableLiveData<>();
-        mText.setValue("This is home fragment");
+        mText.setValue("This is search fragment");
     }
 
     public LiveData<String> getText() {