Adds removing a monster from the dashboard via long press.

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

@@ -21,8 +21,6 @@ import androidx.navigation.fragment.NavHostFragment;
 import androidx.navigation.ui.AppBarConfiguration;
 import androidx.navigation.ui.NavigationUI;
 
-import android.widget.Toast;
-
 import com.google.android.material.bottomnavigation.BottomNavigationView;
 import com.google.gson.Gson;
 import com.majinnaibu.monstercards.helpers.MonsterImportHelper;
@@ -31,6 +29,7 @@ import com.majinnaibu.monstercards.importers.BinderImporter;
 import com.majinnaibu.monstercards.importers.DnDBeyondImporter;
 import com.majinnaibu.monstercards.init.AppCenterInitializer;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.ToastHelper;
 
 import java.io.BufferedReader;
 import java.io.IOException;
@@ -141,24 +140,24 @@ public class MainActivity extends AppCompatActivity {
     public void importMonsterFromInputAndNavigate(@NonNull String input) {
         BinderImporter binderImporter = new BinderImporter();
         if (binderImporter.canImport(input)) {
-            Toast.makeText(this, R.string.toast_importing_url, Toast.LENGTH_SHORT).show();
+            ToastHelper.showShort(this, R.string.toast_importing_url);
             Single.fromCallable(() -> binderImporter.parse(input))
                     .flatMapCompletable(binder -> ((MonsterCardsApplication) getApplication()).getMonsterRepository().importBinder(binder))
                     .subscribeOn(Schedulers.io())
                     .observeOn(AndroidSchedulers.mainThread())
                     .subscribe(() -> {
-                        Toast.makeText(this, R.string.snackbar_import_binder_success, Toast.LENGTH_LONG).show();
+                        ToastHelper.showLong(this, R.string.snackbar_import_binder_success);
                         NavHostFragment navHostFragment = Objects.requireNonNull((NavHostFragment) getSupportFragmentManager().findFragmentById(R.id.nav_host_fragment));
                         NavController navController = navHostFragment.getNavController();
                         navController.navigate(R.id.navigation_library);
                     }, throwable -> {
                         Logger.logError("Failed to import binder from input", throwable);
-                        Toast.makeText(this, R.string.failed_to_import_url, Toast.LENGTH_LONG).show();
+                        ToastHelper.showLong(this, R.string.failed_to_import_url);
                     });
             return;
         }
 
-        Toast.makeText(this, R.string.toast_importing_url, Toast.LENGTH_SHORT).show();
+        ToastHelper.showShort(this, R.string.toast_importing_url);
         Single.fromCallable(() -> MonsterImportHelper.fromJSON(input))
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
@@ -170,7 +169,7 @@ public class MainActivity extends AppCompatActivity {
                     navController.navigate(navAction);
                 }, throwable -> {
                     Logger.logError("Failed to import monster from input", throwable);
-                    Toast.makeText(this, R.string.failed_to_import_url, Toast.LENGTH_LONG).show();
+                    ToastHelper.showLong(this, R.string.failed_to_import_url);
                 });
     }
 

Android/app/src/main/java/com/majinnaibu/monstercards/data/DashboardDAO.java

@@ -3,9 +3,11 @@ package com.majinnaibu.monstercards.data;
 import androidx.room.Dao;
 import androidx.room.Insert;
 import androidx.room.Query;
+import androidx.room.Transaction;
 import androidx.room.Update;
 
 import com.majinnaibu.monstercards.models.DashboardMonster;
+import com.majinnaibu.monstercards.models.DashboardMonsterWithMonster;
 import com.majinnaibu.monstercards.models.Monster;
 
 import java.util.List;
@@ -19,6 +21,10 @@ public interface DashboardDAO {
     @Query("SELECT monsters.* FROM monsters INNER JOIN dashboard_monsters ON monsters.id = dashboard_monsters.monster_id ORDER BY dashboard_monsters.ordinal ASC, dashboard_monsters.id ASC")
     Flowable<List<Monster>> getDashboardMonsters();
 
+    @Transaction
+    @Query("SELECT * FROM dashboard_monsters ORDER BY ordinal ASC, id ASC")
+    Flowable<List<DashboardMonsterWithMonster>> getDashboardMonstersWithMonster();
+
     @Query("SELECT * FROM dashboard_monsters ORDER BY ordinal ASC, id ASC")
     Flowable<List<DashboardMonster>> getDashboardMonsterEntries();
 
@@ -28,9 +34,12 @@ public interface DashboardDAO {
     @Query("DELETE FROM dashboard_monsters WHERE id = :id")
     Completable removeDashboardMonsterById(long id);
 
-    @Query("DELETE FROM dashboard_monsters WHERE monster_id = :monsterId")
+    @Query("DELETE FROM dashboard_monsters WHERE id = (SELECT id FROM dashboard_monsters WHERE monster_id = :monsterId LIMIT 1)")
     Completable removeMonsterFromDashboard(String monsterId);
 
+    @Query("DELETE FROM dashboard_monsters WHERE monster_id = :monsterId")
+    Completable removeAllMonstersFromDashboard(String monsterId);
+
     @Query("DELETE FROM dashboard_monsters")
     Completable clearDashboard();
 

Android/app/src/main/java/com/majinnaibu/monstercards/data/MonsterRepository.java

@@ -208,6 +208,13 @@ public class MonsterRepository {
                 .observeOn(AndroidSchedulers.mainThread());
     }
 
+    public Flowable<List<com.majinnaibu.monstercards.models.DashboardMonsterWithMonster>> getDashboardMonstersWithMonster() {
+        return m_db.dashboardDAO()
+                .getDashboardMonstersWithMonster()
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread());
+    }
+
     public Flowable<List<DashboardMonster>> getDashboardMonsterEntries() {
         return m_db.dashboardDAO()
                 .getDashboardMonsterEntries()

Android/app/src/main/java/com/majinnaibu/monstercards/models/DashboardMonsterWithMonster.java

@@ -0,0 +1,23 @@
+package com.majinnaibu.monstercards.models;
+
+import androidx.room.Embedded;
+import androidx.room.Relation;
+
+public class DashboardMonsterWithMonster {
+    @Embedded
+    public DashboardMonster dashboardEntry;
+
+    @Relation(
+            parentColumn = "monster_id",
+            entityColumn = "id"
+    )
+    public Monster monster;
+
+    public DashboardMonsterWithMonster() {
+    }
+
+    public DashboardMonsterWithMonster(DashboardMonster dashboardEntry, Monster monster) {
+        this.dashboardEntry = dashboardEntry;
+        this.monster = monster;
+    }
+}

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

@@ -21,15 +21,18 @@ import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 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.Collection;
+import com.majinnaibu.monstercards.models.DashboardMonster;
+import com.majinnaibu.monstercards.models.DashboardMonsterWithMonster;
 import com.majinnaibu.monstercards.models.Monster;
 import com.majinnaibu.monstercards.ui.dashboard.DashboardRecyclerViewAdapter;
 import com.majinnaibu.monstercards.ui.shared.MCFragment;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.SnackbarHelper;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
 
@@ -80,7 +83,15 @@ public class CollectionDetailFragment extends MCFragment {
 
         mViewModel.getMonsters().observe(getViewLifecycleOwner(), monsters -> {
             if (mAdapter != null) {
-                mAdapter.submitList(monsters);
+                List<DashboardMonsterWithMonster> items = new ArrayList<>();
+                if (monsters != null) {
+                    for (int i = 0; i < monsters.size(); i++) {
+                        DashboardMonster dm = new DashboardMonster(monsters.get(i).id, i);
+                        dm.id = i + 1;
+                        items.add(new DashboardMonsterWithMonster(dm, monsters.get(i)));
+                    }
+                }
+                mAdapter.submitList(items);
             }
         });
 
@@ -113,9 +124,9 @@ public class CollectionDetailFragment extends MCFragment {
         GridLayoutManager layoutManager = new GridLayoutManager(context, columnCount);
         recyclerView.setLayoutManager(layoutManager);
 
-        mAdapter = new DashboardRecyclerViewAdapter(monster -> {
+        mAdapter = new DashboardRecyclerViewAdapter(item -> {
-            if (monster != null) {
+            if (item != null && item.monster != null) {
-                navigateToMonsterDetail(monster.id);
+                navigateToMonsterDetail(item.monster.id);
             } else {
                 Logger.logError("Can't navigate to MonsterDetailFragment with a null monster");
             }
@@ -133,7 +144,7 @@ public class CollectionDetailFragment extends MCFragment {
                     if (monsters.isEmpty()) {
                         View view = getView();
                         if (view != null) {
-                            Snackbar.make(view, getString(R.string.snackbar_failed_to_create_monster), Snackbar.LENGTH_LONG).show();
+                            SnackbarHelper.showLong(view, getString(R.string.snackbar_failed_to_create_monster));
                         }
                         return;
                     }
@@ -162,11 +173,7 @@ public class CollectionDetailFragment extends MCFragment {
                     if (view != null) {
                         Collection collection = mViewModel.getCollection().getValue();
                         String collectionName = collection != null ? collection.name : "";
-                        Snackbar.make(
+                        SnackbarHelper.showLong(view, getString(R.string.snackbar_monster_added_to_collection, monster.name, collectionName));
-                                view,
-                                getString(R.string.snackbar_monster_added_to_collection, monster.name, collectionName),
-                                Snackbar.LENGTH_LONG)
-                                .show();
                     }
                 }, Logger::logError));
     }
@@ -219,7 +226,7 @@ public class CollectionDetailFragment extends MCFragment {
                     if (view != null) {
                         Collection collection = mViewModel.getCollection().getValue();
                         String collectionName = collection != null ? collection.name : "";
-                        Snackbar.make(view, getString(R.string.snackbar_collection_added_to_dashboard, collectionName), Snackbar.LENGTH_LONG).show();
+                        SnackbarHelper.showLong(view, getString(R.string.snackbar_collection_added_to_dashboard, collectionName));
                     }
                 }, Logger::logError));
     }

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

@@ -20,13 +20,13 @@ import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 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.Collection;
 import com.majinnaibu.monstercards.ui.shared.MCFragment;
 import com.majinnaibu.monstercards.ui.shared.SwipeToDeleteCallback;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.SnackbarHelper;
 
 import java.util.UUID;
 
@@ -150,10 +150,7 @@ public class CollectionsFragment extends MCFragment {
                     public void onComplete() {
                         View view = getView();
                         if (view != null) {
-                            Snackbar.make(
+                            SnackbarHelper.makeLong(view, getString(R.string.snackbar_collection_created, collection.name))
-                                    view,
-                                    getString(R.string.snackbar_collection_created, collection.name),
-                                    Snackbar.LENGTH_LONG)
                                     .setAction("View", v -> navigateToCollectionDetail(collection.id))
                                     .show();
                         }
@@ -164,7 +161,7 @@ public class CollectionsFragment extends MCFragment {
                         Logger.logError("Error creating collection", e);
                         View view = getView();
                         if (view != null) {
-                            Snackbar.make(view, getString(R.string.snackbar_failed_to_create_collection), Snackbar.LENGTH_LONG).show();
+                            SnackbarHelper.showLong(view, getString(R.string.snackbar_failed_to_create_collection));
                         }
                     }
                 });

Android/app/src/main/java/com/majinnaibu/monstercards/ui/dashboard/DashboardFragment.java

@@ -21,13 +21,13 @@ import androidx.recyclerview.widget.ItemTouchHelper;
 import androidx.recyclerview.widget.RecyclerView;
 
 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.Collection;
 import com.majinnaibu.monstercards.models.Monster;
 import com.majinnaibu.monstercards.ui.shared.MCFragment;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.SnackbarHelper;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -69,7 +69,7 @@ public class DashboardFragment extends MCFragment {
 
     private void loadDashboardMonsters() {
         MonsterRepository repository = getMonsterRepository();
-        mDisposables.add(repository.getDashboardMonsters()
+        mDisposables.add(repository.getDashboardMonstersWithMonster()
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(monsters -> mViewModel.setMonsters(monsters), Logger::logError));
@@ -82,14 +82,21 @@ public class DashboardFragment extends MCFragment {
         GridLayoutManager layoutManager = new GridLayoutManager(context, columnCount);
         recyclerView.setLayoutManager(layoutManager);
 
-        LiveData<List<Monster>> monsterData = mViewModel.getMonsters();
+        LiveData<List<com.majinnaibu.monstercards.models.DashboardMonsterWithMonster>> monsterData = mViewModel.getMonsters();
-        mAdapter = new DashboardRecyclerViewAdapter(monster -> {
+        mAdapter = new DashboardRecyclerViewAdapter(
-            if (monster != null) {
+                item -> {
-                navigateToMonsterDetail(monster);
+                    if (item != null && item.monster != null) {
+                        navigateToMonsterDetail(item.monster);
                     } else {
                         Logger.logError("Can't navigate to MonsterDetailFragment with a null monster");
                     }
-        });
+                },
+                item -> {
+                    if (item != null) {
+                        showCardOptionsMenu(item);
+                    }
+                }
+        );
         if (monsterData != null) {
             monsterData.observe(getViewLifecycleOwner(), monsters -> {
                 mAdapter.submitList(monsters);
@@ -113,9 +120,9 @@ public class DashboardFragment extends MCFragment {
                 int fromPos = viewHolder.getAdapterPosition();
                 int toPos = target.getAdapterPosition();
                 if (fromPos != RecyclerView.NO_POSITION && toPos != RecyclerView.NO_POSITION) {
-                    List<Monster> currentList = new ArrayList<>(mAdapter.getCurrentList());
+                    List<com.majinnaibu.monstercards.models.DashboardMonsterWithMonster> currentList = new ArrayList<>(mAdapter.getCurrentList());
                     if (fromPos < currentList.size() && toPos < currentList.size()) {
-                        Monster moved = currentList.remove(fromPos);
+                        com.majinnaibu.monstercards.models.DashboardMonsterWithMonster moved = currentList.remove(fromPos);
                         currentList.add(toPos, moved);
                         mAdapter.submitList(currentList);
                     }
@@ -127,10 +134,10 @@ public class DashboardFragment extends MCFragment {
             public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
                 int position = viewHolder.getAdapterPosition();
                 if (position != RecyclerView.NO_POSITION) {
-                    List<Monster> currentList = mAdapter.getCurrentList();
+                    List<com.majinnaibu.monstercards.models.DashboardMonsterWithMonster> currentList = mAdapter.getCurrentList();
                     if (position < currentList.size()) {
-                        Monster monster = currentList.get(position);
+                        com.majinnaibu.monstercards.models.DashboardMonsterWithMonster item = currentList.get(position);
-                        removeMonsterFromDashboard(monster);
+                        removeDashboardMonsterEntry(item);
                     }
                 }
             }
@@ -142,6 +149,7 @@ public class DashboardFragment extends MCFragment {
         String[] options = new String[]{
                 getString(R.string.action_add_single_monster),
                 getString(R.string.action_add_collection_option),
+                getString(R.string.action_remove_single_monster),
                 getString(R.string.action_clear_dashboard)
         };
         new AlertDialog.Builder(requireContext())
@@ -152,6 +160,8 @@ public class DashboardFragment extends MCFragment {
                     } else if (which == 1) {
                         showAddCollectionPicker();
                     } else if (which == 2) {
+                        showRemoveMonsterPicker();
+                    } else if (which == 3) {
                         clearDashboard();
                     }
                 })
@@ -159,6 +169,68 @@ public class DashboardFragment extends MCFragment {
                 .show();
     }
 
+    private void showRemoveMonsterPicker() {
+        MonsterRepository repository = getMonsterRepository();
+        mDisposables.add(repository.getDashboardMonsters()
+                .firstOrError()
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(monsters -> {
+                    if (monsters.isEmpty()) {
+                        View view = getView();
+                        if (view != null) {
+                            SnackbarHelper.showLong(view, getString(R.string.snackbar_dashboard_already_empty));
+                        }
+                        return;
+                    }
+                    String[] names = new String[monsters.size()];
+                    for (int i = 0; i < monsters.size(); i++) {
+                        names[i] = monsters.get(i).name;
+                    }
+                    new AlertDialog.Builder(requireContext())
+                            .setTitle(R.string.action_remove_single_monster)
+                            .setItems(names, (dialog, which) -> {
+                                Monster selected = monsters.get(which);
+                                removeMonsterFromDashboard(selected);
+                            })
+                            .setNegativeButton(R.string.dialog_cancel, null)
+                            .show();
+                }, Logger::logError));
+    }
+
+    private void showCardOptionsMenu(@NonNull com.majinnaibu.monstercards.models.DashboardMonsterWithMonster item) {
+        String[] options = new String[]{
+                getString(R.string.action_view_details),
+                getString(R.string.action_remove_from_dashboard)
+        };
+        new AlertDialog.Builder(requireContext())
+                .setTitle(item.monster.name)
+                .setItems(options, (dialog, which) -> {
+                    if (which == 0) {
+                        navigateToMonsterDetail(item.monster);
+                    } else if (which == 1) {
+                        removeDashboardMonsterEntry(item);
+                    }
+                })
+                .setNegativeButton(R.string.dialog_cancel, null)
+                .show();
+    }
+
+    private void removeDashboardMonsterEntry(@NonNull com.majinnaibu.monstercards.models.DashboardMonsterWithMonster item) {
+        MonsterRepository repository = getMonsterRepository();
+        mDisposables.add(repository.removeDashboardMonsterById(item.dashboardEntry.id)
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(() -> {
+                    View view = getView();
+                    if (view != null) {
+                        SnackbarHelper.makeLong(view, getString(R.string.snackbar_removed_from_dashboard, item.monster.name))
+                                .setAction(R.string.action_undo, v -> addMonsterToDashboard(item.monster))
+                                .show();
+                    }
+                }, Logger::logError));
+    }
+
     private void showAddMonsterPicker() {
         MonsterRepository repository = getMonsterRepository();
         mDisposables.add(repository.getMonsters()
@@ -169,7 +241,7 @@ public class DashboardFragment extends MCFragment {
                     if (monsters.isEmpty()) {
                         View view = getView();
                         if (view != null) {
-                            Snackbar.make(view, getString(R.string.no_monsters_available), Snackbar.LENGTH_LONG).show();
+                            SnackbarHelper.showLong(view, getString(R.string.no_monsters_available));
                         }
                         return;
                     }
@@ -198,7 +270,7 @@ public class DashboardFragment extends MCFragment {
                     if (collections.isEmpty()) {
                         View view = getView();
                         if (view != null) {
-                            Snackbar.make(view, getString(R.string.no_collections_available), Snackbar.LENGTH_LONG).show();
+                            SnackbarHelper.showLong(view, getString(R.string.no_collections_available));
                         }
                         return;
                     }
@@ -225,7 +297,7 @@ public class DashboardFragment extends MCFragment {
                 .subscribe(() -> {
                     View view = getView();
                     if (view != null) {
-                        Snackbar.make(view, getString(R.string.snackbar_added_to_dashboard, monster.name), Snackbar.LENGTH_LONG).show();
+                        SnackbarHelper.showLong(view, getString(R.string.snackbar_added_to_dashboard, monster.name));
                     }
                 }, Logger::logError));
     }
@@ -238,7 +310,7 @@ public class DashboardFragment extends MCFragment {
                 .subscribe(() -> {
                     View view = getView();
                     if (view != null) {
-                        Snackbar.make(view, getString(R.string.snackbar_collection_added_to_dashboard, collection.name), Snackbar.LENGTH_LONG).show();
+                        SnackbarHelper.showLong(view, getString(R.string.snackbar_collection_added_to_dashboard, collection.name));
                     }
                 }, Logger::logError));
     }
@@ -248,7 +320,14 @@ public class DashboardFragment extends MCFragment {
         mDisposables.add(repository.removeMonsterFromDashboard(monster.id)
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(() -> {}, Logger::logError));
+                .subscribe(() -> {
+                    View view = getView();
+                    if (view != null) {
+                        SnackbarHelper.makeLong(view, getString(R.string.snackbar_removed_from_dashboard, monster.name))
+                                .setAction(R.string.action_undo, v -> addMonsterToDashboard(monster))
+                                .show();
+                    }
+                }, Logger::logError));
     }
 
     private void clearDashboard() {
@@ -259,7 +338,7 @@ public class DashboardFragment extends MCFragment {
                 .subscribe(() -> {
                     View view = getView();
                     if (view != null) {
-                        Snackbar.make(view, getString(R.string.snackbar_dashboard_cleared), Snackbar.LENGTH_LONG).show();
+                        SnackbarHelper.showLong(view, getString(R.string.snackbar_dashboard_cleared));
                     }
                 }, Logger::logError));
     }
@@ -283,6 +362,9 @@ public class DashboardFragment extends MCFragment {
         } else if (item.getItemId() == R.id.menu_action_add_collection_option) {
             showAddCollectionPicker();
             return true;
+        } else if (item.getItemId() == R.id.menu_action_remove_single_monster) {
+            showRemoveMonsterPicker();
+            return true;
         } else if (item.getItemId() == R.id.menu_action_clear_dashboard) {
             clearDashboard();
             return true;

Android/app/src/main/java/com/majinnaibu/monstercards/ui/dashboard/DashboardRecyclerViewAdapter.java

@@ -18,29 +18,44 @@ import com.majinnaibu.monstercards.data.enums.ChallengeRating;
 import com.majinnaibu.monstercards.data.enums.ProficiencyType;
 import com.majinnaibu.monstercards.databinding.CardMonsterBinding;
 import com.majinnaibu.monstercards.helpers.CommonMarkHelper;
+import com.majinnaibu.monstercards.models.DashboardMonsterWithMonster;
 import com.majinnaibu.monstercards.models.Monster;
 import com.majinnaibu.monstercards.models.Trait;
 import com.majinnaibu.monstercards.utils.Logger;
 
 import java.util.Locale;
 
-public class DashboardRecyclerViewAdapter extends ListAdapter<Monster, DashboardRecyclerViewAdapter.ViewHolder> {
+public class DashboardRecyclerViewAdapter extends ListAdapter<DashboardMonsterWithMonster, DashboardRecyclerViewAdapter.ViewHolder> {
-    private static final DiffUtil.ItemCallback<Monster> DIFF_CALLBACK = new DiffUtil.ItemCallback<Monster>() {
+    private static final DiffUtil.ItemCallback<DashboardMonsterWithMonster> DIFF_CALLBACK = new DiffUtil.ItemCallback<DashboardMonsterWithMonster>() {
         @Override
-        public boolean areItemsTheSame(@NonNull Monster oldItem, @NonNull Monster newItem) {
+        public boolean areItemsTheSame(@NonNull DashboardMonsterWithMonster oldItem, @NonNull DashboardMonsterWithMonster newItem) {
-            return oldItem.id.equals(newItem.id);
+            if (oldItem.dashboardEntry != null && newItem.dashboardEntry != null) {
+                return oldItem.dashboardEntry.id == newItem.dashboardEntry.id;
+            }
+            return oldItem.monster.id.equals(newItem.monster.id);
         }
 
         @Override
-        public boolean areContentsTheSame(@NonNull Monster oldItem, @NonNull Monster newItem) {
+        public boolean areContentsTheSame(@NonNull DashboardMonsterWithMonster oldItem, @NonNull DashboardMonsterWithMonster newItem) {
-            return oldItem.equals(newItem);
+            if (oldItem.dashboardEntry != null && newItem.dashboardEntry != null) {
+                return oldItem.dashboardEntry.id == newItem.dashboardEntry.id
+                        && oldItem.dashboardEntry.ordinal == newItem.dashboardEntry.ordinal
+                        && (oldItem.monster != null && oldItem.monster.equals(newItem.monster));
+            }
+            return (oldItem.monster != null && oldItem.monster.equals(newItem.monster));
         }
     };
     private final ItemCallback mOnClick;
+    private final ItemCallback mOnLongClick;
 
-    public DashboardRecyclerViewAdapter(ItemCallback onClick) {
+    public DashboardRecyclerViewAdapter(ItemCallback onClick, ItemCallback onLongClick) {
         super(DIFF_CALLBACK);
         mOnClick = onClick;
+        mOnLongClick = onLongClick;
+    }
+
+    public DashboardRecyclerViewAdapter(ItemCallback onClick) {
+        this(onClick, null);
     }
 
     @NonNull
@@ -52,7 +67,9 @@ public class DashboardRecyclerViewAdapter extends ListAdapter<Monster, Dashboard
     @Override
     public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
         Logger.logUnimplementedMethod();
-        Monster monster = getItem(position);
+        DashboardMonsterWithMonster item = getItem(position);
+        Monster monster = item.monster;
+        holder.item = item;
         holder.monster = monster;
         holder.name.setText(monster.name);
         holder.meta.setText(monster.getMeta());
@@ -120,16 +137,25 @@ public class DashboardRecyclerViewAdapter extends ListAdapter<Monster, Dashboard
 
         holder.itemView.setOnClickListener(v -> {
             if (mOnClick != null) {
-                mOnClick.onItemCallback(holder.monster);
+                mOnClick.onItemCallback(holder.item);
             }
         });
+
+        holder.itemView.setOnLongClickListener(v -> {
+            if (mOnLongClick != null) {
+                mOnLongClick.onItemCallback(holder.item);
+                return true;
+            }
+            return false;
+        });
     }
 
     public interface ItemCallback {
-        void onItemCallback(Monster monster);
+        void onItemCallback(DashboardMonsterWithMonster item);
     }
 
     public static class ViewHolder extends RecyclerView.ViewHolder {
+        public DashboardMonsterWithMonster item;
         public final TextView name;
         public final TextView meta;
         public final View action1Group;

Android/app/src/main/java/com/majinnaibu/monstercards/ui/dashboard/DashboardViewModel.java

@@ -4,23 +4,23 @@ import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
-import com.majinnaibu.monstercards.models.Monster;
+import com.majinnaibu.monstercards.models.DashboardMonsterWithMonster;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class DashboardViewModel extends ViewModel {
-    private final MutableLiveData<List<Monster>> mMonsters;
+    private final MutableLiveData<List<DashboardMonsterWithMonster>> mMonsters;
 
     public DashboardViewModel() {
         mMonsters = new MutableLiveData<>(new ArrayList<>());
     }
 
-    public LiveData<List<Monster>> getMonsters() {
+    public LiveData<List<DashboardMonsterWithMonster>> getMonsters() {
         return mMonsters;
     }
 
-    public void setMonsters(List<Monster> monsters) {
+    public void setMonsters(List<DashboardMonsterWithMonster> monsters) {
         mMonsters.setValue(monsters);
     }
 }

Android/app/src/main/java/com/majinnaibu/monstercards/ui/editmonster/EditMonsterFragment.java

@@ -18,7 +18,6 @@ import androidx.navigation.NavController;
 import androidx.navigation.NavDirections;
 import androidx.navigation.fragment.NavHostFragment;
 
-import com.google.android.material.snackbar.Snackbar;
 import com.majinnaibu.monstercards.R;
 import com.majinnaibu.monstercards.data.MonsterRepository;
 import com.majinnaibu.monstercards.data.enums.StringType;
@@ -26,6 +25,7 @@ import com.majinnaibu.monstercards.data.enums.TraitType;
 import com.majinnaibu.monstercards.models.Monster;
 import com.majinnaibu.monstercards.ui.shared.MCFragment;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.SnackbarHelper;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -124,8 +124,7 @@ public class EditMonsterFragment extends MCFragment {
                                             public void onError(@io.reactivex.rxjava3.annotations.NonNull Throwable e) {
                                                 Logger.logError("Error saving monster", e);
                                                 assert view != null;
-                                                Snackbar.make(view, getString(R.string.snackbar_failed_to_create_monster), Snackbar.LENGTH_LONG)
+                                                SnackbarHelper.showLong(view, getString(R.string.snackbar_failed_to_create_monster));
-                                                        .setAction("Action", null).show();
                                             }
                                         });
                     });

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

@@ -24,7 +24,6 @@ import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
-import com.google.android.material.snackbar.Snackbar;
 import com.majinnaibu.monstercards.MainActivity;
 import com.majinnaibu.monstercards.R;
 import com.majinnaibu.monstercards.data.MonsterRepository;
@@ -35,6 +34,7 @@ import com.majinnaibu.monstercards.ui.monster.MonsterDetailFragmentDirections;
 import com.majinnaibu.monstercards.ui.shared.MCFragment;
 import com.majinnaibu.monstercards.ui.shared.SwipeToDeleteCallback;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.SnackbarHelper;
 
 import java.util.UUID;
 
@@ -206,7 +206,7 @@ public class LibraryFragment extends MCFragment {
                         Logger.logError("Error creating monster", e);
                         View view = getView();
                         if (view != null) {
-                            Snackbar.make(view, getString(R.string.snackbar_failed_to_create_monster), Snackbar.LENGTH_LONG).show();
+                            SnackbarHelper.showLong(view, getString(R.string.snackbar_failed_to_create_monster));
                         }
                     }
                 }));

Android/app/src/main/java/com/majinnaibu/monstercards/ui/monster/MonsterDetailFragment.java

@@ -31,7 +31,6 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.NavDirections;
 import androidx.navigation.Navigation;
 
-import com.google.android.material.snackbar.Snackbar;
 import com.majinnaibu.monstercards.R;
 import com.majinnaibu.monstercards.data.MonsterRepository;
 import com.majinnaibu.monstercards.helpers.CommonMarkHelper;
@@ -40,6 +39,7 @@ import com.majinnaibu.monstercards.models.Collection;
 import com.majinnaibu.monstercards.models.Monster;
 import com.majinnaibu.monstercards.ui.shared.MCFragment;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.SnackbarHelper;
 
 import java.util.List;
 import java.util.UUID;
@@ -252,7 +252,7 @@ public class MonsterDetailFragment extends MCFragment {
             Logger.logError("Failed to share monster", e);
             View view = getView();
             if (view != null) {
-                Snackbar.make(view, R.string.failed_to_share_monster, Snackbar.LENGTH_LONG).show();
+                SnackbarHelper.showLong(view, R.string.failed_to_share_monster);
             }
         }
     }
@@ -270,7 +270,7 @@ public class MonsterDetailFragment extends MCFragment {
                     View view = getView();
                     if (view != null) {
                         String monsterName = mViewModel.getName().getValue();
-                        Snackbar.make(view, getString(R.string.snackbar_added_to_dashboard, monsterName), Snackbar.LENGTH_LONG).show();
+                        SnackbarHelper.showLong(view, getString(R.string.snackbar_added_to_dashboard, monsterName));
                     }
                 }, Logger::logError);
     }
@@ -291,7 +291,7 @@ public class MonsterDetailFragment extends MCFragment {
                         if (collections.isEmpty()) {
                             View view = getView();
                             if (view != null) {
-                                Snackbar.make(view, getString(R.string.no_collections_available), Snackbar.LENGTH_LONG).show();
+                                SnackbarHelper.showLong(view, getString(R.string.no_collections_available));
                             }
                             dispose();
                             return;
@@ -330,11 +330,7 @@ public class MonsterDetailFragment extends MCFragment {
                         View view = getView();
                         if (view != null) {
                             String monsterName = mViewModel.getName().getValue();
-                            Snackbar.make(
+                            SnackbarHelper.showLong(view, getString(R.string.snackbar_monster_added_to_collection, monsterName, collection.name));
-                                    view,
-                                    getString(R.string.snackbar_monster_added_to_collection, monsterName, collection.name),
-                                    Snackbar.LENGTH_LONG)
-                                    .show();
                         }
                     }
 

Android/app/src/main/java/com/majinnaibu/monstercards/ui/monster/MonsterImportFragment.java

@@ -23,7 +23,6 @@ import androidx.navigation.NavController;
 import androidx.navigation.NavDirections;
 import androidx.navigation.Navigation;
 
-import com.google.android.material.snackbar.Snackbar;
 import com.majinnaibu.monstercards.MonsterCardsApplication;
 import com.majinnaibu.monstercards.R;
 import com.majinnaibu.monstercards.data.MonsterRepository;
@@ -34,6 +33,7 @@ import com.majinnaibu.monstercards.models.Monster;
 import com.majinnaibu.monstercards.ui.library.LibraryFragmentDirections;
 import com.majinnaibu.monstercards.ui.shared.MCFragment;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.SnackbarHelper;
 
 import java.util.List;
 import java.util.UUID;
@@ -174,7 +174,7 @@ public class MonsterImportFragment extends MCFragment {
                     @Override
                     public void onError(@io.reactivex.rxjava3.annotations.NonNull Throwable e) {
                         Logger.logError("Error creating monster", e);
-                        Snackbar.make(mHolder.root, getString(R.string.snackbar_failed_to_create_monster), Snackbar.LENGTH_LONG).show();
+                        SnackbarHelper.showLong(mHolder.root, getString(R.string.snackbar_failed_to_create_monster));
                     }
                 });
             } else {

Android/app/src/main/java/com/majinnaibu/monstercards/ui/shared/MCFragment.java

@@ -19,11 +19,11 @@ import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.fragment.app.Fragment;
 
-import com.google.android.material.snackbar.Snackbar;
 import com.majinnaibu.monstercards.MonsterCardsApplication;
 import com.majinnaibu.monstercards.R;
 import com.majinnaibu.monstercards.data.MonsterRepository;
 import com.majinnaibu.monstercards.utils.Logger;
+import com.majinnaibu.monstercards.utils.SnackbarHelper;
 
 import java.io.OutputStream;
 import java.nio.charset.StandardCharsets;
@@ -87,7 +87,7 @@ public class MCFragment extends Fragment {
             Logger.logError("Failed to launch document creation picker", e);
             View view = getView();
             if (view != null) {
-                Snackbar.make(view, R.string.snackbar_export_failed, Snackbar.LENGTH_LONG).show();
+                SnackbarHelper.showLong(view, R.string.snackbar_export_failed);
             }
         }
     }
@@ -103,14 +103,14 @@ public class MCFragment extends Fragment {
                 if (view != null) {
                     String fileName = getFileNameFromUri(context, uri);
                     String message = getString(R.string.snackbar_export_success, fileName);
-                    Snackbar.make(view, message, Snackbar.LENGTH_LONG).show();
+                    SnackbarHelper.showLong(view, message);
                 }
             }
         } catch (Exception e) {
             Logger.logError("Failed to write export content to URI", e);
             View view = getView();
             if (view != null) {
-                Snackbar.make(view, R.string.snackbar_export_failed, Snackbar.LENGTH_LONG).show();
+                SnackbarHelper.showLong(view, R.string.snackbar_export_failed);
             }
         }
     }

Android/app/src/main/java/com/majinnaibu/monstercards/utils/SnackbarHelper.java

@@ -0,0 +1,53 @@
+package com.majinnaibu.monstercards.utils;
+
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.StringRes;
+
+import com.google.android.material.snackbar.Snackbar;
+
+/**
+ * Centralized helper for managing Snackbar notifications and durations across the app.
+ */
+public class SnackbarHelper {
+    // Configurable default durations in milliseconds
+    public static int DEFAULT_SHORT_DURATION = 2500; // 2.5 seconds
+    public static int DEFAULT_LONG_DURATION = 4000;  // 4.0 seconds (e.g. for Undo or action messages)
+
+    public static Snackbar makeShort(@NonNull View view, @StringRes int resId) {
+        return make(view, view.getContext().getString(resId), DEFAULT_SHORT_DURATION);
+    }
+
+    public static Snackbar makeShort(@NonNull View view, @NonNull CharSequence message) {
+        return make(view, message, DEFAULT_SHORT_DURATION);
+    }
+
+    public static Snackbar makeLong(@NonNull View view, @StringRes int resId) {
+        return make(view, view.getContext().getString(resId), DEFAULT_LONG_DURATION);
+    }
+
+    public static Snackbar makeLong(@NonNull View view, @NonNull CharSequence message) {
+        return make(view, message, DEFAULT_LONG_DURATION);
+    }
+
+    public static Snackbar make(@NonNull View view, @NonNull CharSequence message, int durationMs) {
+        return Snackbar.make(view, message, durationMs);
+    }
+
+    public static void showShort(@NonNull View view, @StringRes int resId) {
+        makeShort(view, resId).show();
+    }
+
+    public static void showShort(@NonNull View view, @NonNull CharSequence message) {
+        makeShort(view, message).show();
+    }
+
+    public static void showLong(@NonNull View view, @StringRes int resId) {
+        makeLong(view, resId).show();
+    }
+
+    public static void showLong(@NonNull View view, @NonNull CharSequence message) {
+        makeLong(view, message).show();
+    }
+}

Android/app/src/main/java/com/majinnaibu/monstercards/utils/ToastHelper.java

@@ -0,0 +1,42 @@
+package com.majinnaibu.monstercards.utils;
+
+import android.content.Context;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.StringRes;
+
+/**
+ * Centralized helper for managing Toast notifications and durations across the app.
+ */
+public class ToastHelper {
+    // Configurable default durations
+    public static int DEFAULT_SHORT_DURATION = Toast.LENGTH_SHORT; // ~2.0 seconds
+    public static int DEFAULT_LONG_DURATION = Toast.LENGTH_LONG;   // ~3.5 seconds
+
+    private static Toast sCurrentToast;
+
+    public static void showShort(@NonNull Context context, @StringRes int resId) {
+        show(context, context.getString(resId), DEFAULT_SHORT_DURATION);
+    }
+
+    public static void showShort(@NonNull Context context, @NonNull String message) {
+        show(context, message, DEFAULT_SHORT_DURATION);
+    }
+
+    public static void showLong(@NonNull Context context, @StringRes int resId) {
+        show(context, context.getString(resId), DEFAULT_LONG_DURATION);
+    }
+
+    public static void showLong(@NonNull Context context, @NonNull String message) {
+        show(context, message, DEFAULT_LONG_DURATION);
+    }
+
+    public static void show(@NonNull Context context, @NonNull String message, int duration) {
+        if (sCurrentToast != null) {
+            sCurrentToast.cancel();
+        }
+        sCurrentToast = Toast.makeText(context.getApplicationContext(), message, duration);
+        sCurrentToast.show();
+    }
+}

Android/app/src/main/res/menu/dashboard_menu.xml

@@ -12,6 +12,11 @@
         android:title="@string/action_add_collection_option"
         app:showAsAction="never" />
 
+    <item
+        android:id="@+id/menu_action_remove_single_monster"
+        android:title="@string/action_remove_single_monster"
+        app:showAsAction="never" />
+
     <item
         android:id="@+id/menu_action_clear_dashboard"
         android:title="@string/action_clear_dashboard"

Android/app/src/main/res/values/strings.xml

@@ -188,4 +188,14 @@
     <string name="empty_library_title">Your Library is Empty</string>
     <string name="empty_library_subtitle">Create new monster cards or import them from D&amp;D Beyond or Open5e.</string>
     <string name="app_title_splash">Monster Cards</string>
+
+    <string name="action_remove_single_monster">Remove Monster...</string>
+    <string name="action_remove">Remove</string>
+    <string name="action_undo">Undo</string>
+    <string name="action_view_details">View Details</string>
+    <string name="action_remove_from_dashboard">Remove from Dashboard</string>
+    <string name="snackbar_removed_from_dashboard">Removed %1$s from Dashboard</string>
+    <string name="snackbar_dashboard_already_empty">Dashboard is already empty</string>
+    <string name="dialog_remove_from_dashboard_title">Remove %1$s?</string>
+    <string name="dialog_remove_from_dashboard_message">Remove %1$s from your dashboard?</string>
 </resources>