Adds Edit Monster placeholder fragment.

app/build.gradle

@@ -60,6 +60,9 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {
@@ -73,6 +76,8 @@ dependencies {
     implementation "androidx.navigation:navigation-fragment:$nav_version"
     implementation "androidx.navigation:navigation-ui:$nav_version"
     implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
 
     // Testing
     testImplementation 'junit:junit:4.13.2'

app/src/main/java/com/majinnaibu/monstercards/placeholder/PlaceholderContent.java

@@ -0,0 +1,72 @@
+package com.majinnaibu.monstercards.placeholder;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Helper class for providing sample content for user interfaces created by
+ * Android template wizards.
+ * <p>
+ * TODO: Replace all uses of this class before publishing your app.
+ */
+public class PlaceholderContent {
+
+    /**
+     * An array of sample (placeholder) items.
+     */
+    public static final List<PlaceholderItem> ITEMS = new ArrayList<PlaceholderItem>();
+
+    /**
+     * A map of sample (placeholder) items, by ID.
+     */
+    public static final Map<String, PlaceholderItem> ITEM_MAP = new HashMap<String, PlaceholderItem>();
+
+    private static final int COUNT = 25;
+
+    static {
+        // Add some sample items.
+        for (int i = 1; i <= COUNT; i++) {
+            addItem(createPlaceholderItem(i));
+        }
+    }
+
+    private static void addItem(PlaceholderItem item) {
+        ITEMS.add(item);
+        ITEM_MAP.put(item.id, item);
+    }
+
+    private static PlaceholderItem createPlaceholderItem(int position) {
+        return new PlaceholderItem(String.valueOf(position), "Item " + position, makeDetails(position));
+    }
+
+    private static String makeDetails(int position) {
+        StringBuilder builder = new StringBuilder();
+        builder.append("Details about Item: ").append(position);
+        for (int i = 0; i < position; i++) {
+            builder.append("\nMore details information here.");
+        }
+        return builder.toString();
+    }
+
+    /**
+     * A placeholder item representing a piece of content.
+     */
+    public static class PlaceholderItem {
+        public final String id;
+        public final String content;
+        public final String details;
+
+        public PlaceholderItem(String id, String content, String details) {
+            this.id = id;
+            this.content = content;
+            this.details = details;
+        }
+
+        @Override
+        public String toString() {
+            return content;
+        }
+    }
+}

app/src/main/java/com/majinnaibu/monstercards/ui/monster/EditMonsterFragment.java

@@ -0,0 +1,72 @@
+package com.majinnaibu.monstercards.ui.monster;
+
+import android.content.Context;
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.majinnaibu.monstercards.R;
+import com.majinnaibu.monstercards.placeholder.PlaceholderContent;
+
+/**
+ * A fragment representing a list of Items.
+ */
+public class EditMonsterFragment extends Fragment {
+
+    // TODO: Customize parameter argument names
+    private static final String ARG_COLUMN_COUNT = "column-count";
+    // TODO: Customize parameters
+    private int mColumnCount = 1;
+
+    /**
+     * Mandatory empty constructor for the fragment manager to instantiate the
+     * fragment (e.g. upon screen orientation changes).
+     */
+    public EditMonsterFragment() {
+    }
+
+    // TODO: Customize parameter initialization
+    @SuppressWarnings("unused")
+    public static EditMonsterFragment newInstance(int columnCount) {
+        EditMonsterFragment fragment = new EditMonsterFragment();
+        Bundle args = new Bundle();
+        args.putInt(ARG_COLUMN_COUNT, columnCount);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (getArguments() != null) {
+            mColumnCount = getArguments().getInt(ARG_COLUMN_COUNT);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_edit_monster_list, container, false);
+
+        // Set the adapter
+        if (view instanceof RecyclerView) {
+            Context context = view.getContext();
+            RecyclerView recyclerView = (RecyclerView) view;
+            if (mColumnCount <= 1) {
+                recyclerView.setLayoutManager(new LinearLayoutManager(context));
+            } else {
+                recyclerView.setLayoutManager(new GridLayoutManager(context, mColumnCount));
+            }
+            recyclerView.setAdapter(new EditMonsterRecyclerViewAdapter(PlaceholderContent.ITEMS));
+        }
+        return view;
+    }
+}

app/src/main/java/com/majinnaibu/monstercards/ui/monster/EditMonsterRecyclerViewAdapter.java

@@ -0,0 +1,61 @@
+package com.majinnaibu.monstercards.ui.monster;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.majinnaibu.monstercards.placeholder.PlaceholderContent.PlaceholderItem;
+import com.majinnaibu.monstercards.databinding.FragmentEditMonsterBinding;
+
+import java.util.List;
+
+/**
+ * {@link RecyclerView.Adapter} that can display a {@link PlaceholderItem}.
+ * TODO: Replace the implementation with code for your data type.
+ */
+public class EditMonsterRecyclerViewAdapter extends RecyclerView.Adapter<EditMonsterRecyclerViewAdapter.ViewHolder> {
+
+    private final List<PlaceholderItem> mValues;
+
+    public EditMonsterRecyclerViewAdapter(List<PlaceholderItem> items) {
+        mValues = items;
+    }
+
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+
+        return new ViewHolder(FragmentEditMonsterBinding.inflate(LayoutInflater.from(parent.getContext()), parent, false));
+
+    }
+
+    @Override
+    public void onBindViewHolder(final ViewHolder holder, int position) {
+        holder.mItem = mValues.get(position);
+        holder.mIdView.setText(mValues.get(position).id);
+        holder.mContentView.setText(mValues.get(position).content);
+    }
+
+    @Override
+    public int getItemCount() {
+        return mValues.size();
+    }
+
+    public class ViewHolder extends RecyclerView.ViewHolder {
+        public final TextView mIdView;
+        public final TextView mContentView;
+        public PlaceholderItem mItem;
+
+        public ViewHolder(FragmentEditMonsterBinding binding) {
+            super(binding.getRoot());
+            mIdView = binding.itemNumber;
+            mContentView = binding.content;
+        }
+
+        @Override
+        public String toString() {
+            return super.toString() + " '" + mContentView.getText() + "'";
+        }
+    }
+}

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

@@ -10,14 +10,16 @@ import android.util.TypedValue;
 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 android.widget.LinearLayout;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.NavDirections;
+import androidx.navigation.Navigation;
 
 import com.majinnaibu.monstercards.R;
 import com.majinnaibu.monstercards.data.MonsterRepository;
@@ -235,4 +237,16 @@ public class MonsterDetailFragment extends MCFragment {
         inflater.inflate(R.menu.monster_detail_menu, menu);
         super.onCreateOptionsMenu(menu, inflater);
     }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        if (item.getItemId() == R.id.menu_action_edit_monster) {
+            NavDirections action = MonsterDetailFragmentDirections.actionNavigationMonsterToEditMonsterFragment(monsterDetailViewModel.getId().toString());
+            View view = getView();
+            assert view != null;
+            Navigation.findNavController(view).navigate(action);
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
 }

app/src/main/java/com/majinnaibu/monstercards/ui/monster/MonsterDetailViewModel.java

@@ -8,6 +8,7 @@ import com.majinnaibu.monstercards.models.Monster;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.UUID;
 
 public class MonsterDetailViewModel extends ViewModel {
 
@@ -57,6 +58,8 @@ public class MonsterDetailViewModel extends ViewModel {
         mStrength.setValue("");
         mWisdom = new MutableLiveData<>();
         mWisdom.setValue("");
+        mMonsterId = new MutableLiveData<>();
+        mMonsterId.setValue(UUID.fromString("00000000-0000-0000-0000-000000000000"));
     }
 
     private final MutableLiveData<List<String>> mAbilities;
@@ -191,6 +194,12 @@ public class MonsterDetailViewModel extends ViewModel {
         return mWisdom;
     }
 
+    private final MutableLiveData<UUID> mMonsterId;
+
+    public LiveData<UUID> getId() {
+        return mMonsterId;
+    }
+
     private Monster mMonster;
 
     public void setMonster(Monster monster) {

app/src/main/res/layout/fragment_edit_monster.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal">
+
+    <TextView
+        android:id="@+id/item_number"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/text_margin"
+        android:textAppearance="?attr/textAppearanceListItem" />
+
+    <TextView
+        android:id="@+id/content"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/text_margin"
+        android:textAppearance="?attr/textAppearanceListItem" />
+</LinearLayout>

app/src/main/res/layout/fragment_edit_monster_list.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/list"
+    android:name="com.majinnaibu.monstercards.EditMonsterFragment"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_marginLeft="16dp"
+    android:layout_marginRight="16dp"
+    app:layoutManager="LinearLayoutManager"
+    tools:context=".ui.monster.EditMonsterFragment"
+    tools:listitem="@layout/fragment_edit_monster" />

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

@@ -3,6 +3,7 @@
     xmlns:android="http://schemas.android.com/apk/res/android">
 
     <item
+        android:id="@+id/menu_action_edit_monster"
         android:icon="@drawable/ic_edit_24"
         android:title="@string/action_edit"
         app:showAsAction="always" />

app/src/main/res/navigation/mobile_navigation.xml

@@ -53,6 +53,18 @@
         <argument
             android:name="monster_id"
             app:argType="string" />
+        <action
+            android:id="@+id/action_navigation_monster_to_editMonsterFragment"
+            app:destination="@id/editMonsterFragment" />
+    </fragment>
+    <fragment
+        android:id="@+id/editMonsterFragment"
+        android:name="com.majinnaibu.monstercards.ui.monster.EditMonsterFragment"
+        android:label="fragment_edit_monster_list"
+        tools:layout="@layout/fragment_edit_monster_list" >
+        <argument
+            android:name="monster_id"
+            app:argType="string" />
     </fragment>
 
 </navigation>