End Of Day 1

app/src/main/AndroidManifest.xml

@@ -17,13 +17,16 @@
 
         <activity
             android:name=".activity.list.ListActivity"
-            android:exported="true"
+            android:exported="true">
-            android:theme="@style/Theme.MTUDining">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity
+            android:name=".activity.menu.MenuActivity"
+            android:exported="false" />
     </application>
 
 </manifest>

app/src/main/java/com/thebrokenrail/mtudining/activity/MenuActivity.java

@@ -1,9 +0,0 @@
-package com.thebrokenrail.mtudining.activity;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-/**
- * This activity lists the menu for a given dining hall.
- */
-public class MenuActivity extends AppCompatActivity {
-}

app/src/main/java/com/thebrokenrail/mtudining/activity/list/ListActivity.java

@@ -14,7 +14,7 @@ import com.thebrokenrail.mtudining.R;
 import com.thebrokenrail.mtudining.util.EdgeToEdgeUtil;
 
 /**
- * This activity lists the available food halls.
+ * This activity lists the available dining halls.
  */
 public class ListActivity extends AppCompatActivity {
     private ListAdapter adapter;
@@ -41,4 +41,10 @@ public class ListActivity extends AppCompatActivity {
         recyclerView.setAdapter(adapter);
         EdgeToEdgeUtil.setup(this, recyclerView);
     }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        adapter.onDestroy();
+    }
 }

app/src/main/java/com/thebrokenrail/mtudining/activity/list/ListAdapter.java

@@ -1,15 +1,13 @@
 package com.thebrokenrail.mtudining.activity.list;
 
-import android.util.TypedValue;
+import android.content.Intent;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.LinearLayout;
 
 import androidx.annotation.NonNull;
-import androidx.appcompat.widget.AppCompatTextView;
 import androidx.recyclerview.widget.RecyclerView;
 
-import com.thebrokenrail.mtudining.R;
+import com.thebrokenrail.mtudining.activity.menu.MenuActivity;
 import com.thebrokenrail.mtudining.activity.task.Task;
 import com.thebrokenrail.mtudining.activity.task.TaskAdapter;
 import com.thebrokenrail.mtudining.widget.CategoryView;
@@ -17,60 +15,40 @@ import com.thebrokenrail.mtudining.widget.CategoryView;
 /**
  * Adapter for listing dining halls.
  */
-public class ListAdapter extends TaskAdapter<ListData, ListAdapter.ViewHolder> {
+class ListAdapter extends TaskAdapter<ListData> {
-    public static class ViewHolder extends RecyclerView.ViewHolder {
+    ListAdapter(Task<ListData> task) {
-        private final CategoryView view;
-        private ViewHolder(@NonNull View itemView) {
-            super(itemView);
-            view = (CategoryView) itemView;
-        }
-    }
-
-    public ListAdapter(Task<ListData> task) {
         super(task);
     }
 
     @Override
-    protected ViewHolder createItemViewHolder(@NonNull ViewGroup parent) {
+    protected View createItemView(@NonNull ViewGroup parent) {
         // Create View
         CategoryView category = new CategoryView(parent.getContext(), null);
         RecyclerView.LayoutParams layoutParams = new RecyclerView.LayoutParams(RecyclerView.LayoutParams.MATCH_PARENT, RecyclerView.LayoutParams.WRAP_CONTENT);
         category.setLayoutParams(layoutParams);
-        return new ViewHolder(category);
+        return category;
     }
 
     @Override
-    protected void bindDataViewHolder(@NonNull ViewHolder holder, int position) {
+    protected void bindItemView(View view, int position) {
-        ListData.Category data = getResult().categories.get(position);
+        ListData.Category data = getResult().categories.get(position - getFirstElementPosition());
         // Setup View
-        holder.view.setup(data.isOpen, data.name, () -> {
+        CategoryView category = (CategoryView) view;
+        category.setup(data.isOpen, data.name, () -> {
             // Open/Close Category
             data.isOpen = !data.isOpen;
-            notifyItemChanged(getResult().categories.indexOf(data));
+            notifyItemChanged(getResult().categories.indexOf(data) + getFirstElementPosition());
         });
         // Add Locations
-        holder.view.children.removeAllViews();
+        category.clearItems();
-        for (ListData.Element location : data.locations) {
+        for (ListData.Category.Element location : data.locations) {
-            AppCompatTextView item = new AppCompatTextView(holder.view.getContext());
+            category.addItem(location.name, () -> {
-            // Text
+                // Open Menu
-            item.setText(location.name);
+                Intent intent = new Intent(category.getContext(), MenuActivity.class);
-            // Text Size
+                intent.putExtra(MenuActivity.ID_EXTRA, location.id);
-            item.setTextSize(TypedValue.COMPLEX_UNIT_PX, item.getResources().getDimension(R.dimen.item_font_size));
+                intent.putExtra(MenuActivity.NAME_EXTRA, location.name);
-            // Padding
+                category.getContext().startActivity(intent);
-            int margin = holder.view.getResources().getDimensionPixelSize(R.dimen.margin);
+            });
-            item.setPadding(margin, margin, margin, margin);
-            // Make Clickable
-            item.setClickable(true);
-            item.setFocusable(true);
-            // Ripple Effect
-            TypedValue outValue = new TypedValue();
-            holder.view.getContext().getTheme().resolveAttribute(androidx.appcompat.R.attr.selectableItemBackground, outValue, true);
-            item.setBackgroundResource(outValue.resourceId);
-            // Layout
-            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
-            item.setLayoutParams(layoutParams);
-            // Add To View
-            holder.view.children.addView(item);
         }
     }
 

app/src/main/java/com/thebrokenrail/mtudining/activity/list/ListData.java

@@ -6,18 +6,18 @@ import java.util.List;
 /**
  * Data to be displayed in {@link ListActivity}.
  */
-public class ListData {
+class ListData {
-    public static class Element {
-        public final String id;
-        public final String name;
-
-        public Element(String id, String name) {
-            this.id = id;
-            this.name = name;
-        }
-    }
-
     public static class Category {
+        public static class Element {
+            public final String id;
+            public final String name;
+
+            public Element(String id, String name) {
+                this.id = id;
+                this.name = name;
+            }
+        }
+
         public final String name;
         public boolean isOpen = true;
         public final List<Element> locations = new ArrayList<>();
@@ -30,7 +30,7 @@ public class ListData {
     public final String siteId;
     public final List<Category> categories = new ArrayList<>();
 
-    public ListData(String siteId) {
+    ListData(String siteId) {
         this.siteId = siteId;
     }
 }

app/src/main/java/com/thebrokenrail/mtudining/activity/list/ListTask.java

@@ -0,0 +1,56 @@
+package com.thebrokenrail.mtudining.activity.list;
+
+import com.thebrokenrail.mtudining.activity.task.Task;
+import com.thebrokenrail.mtudining.api.Connection;
+import com.thebrokenrail.mtudining.api.method.AllLocations;
+import com.thebrokenrail.mtudining.api.method.Info;
+import com.thebrokenrail.mtudining.util.Constants;
+
+/**
+ * Task for retrieving site ID and list of dining halls.
+ */
+class ListTask extends Task<ListData> {
+    private final Connection connection;
+
+    ListTask(Connection connection) {
+        this.connection = connection;
+    }
+
+    @Override
+    protected void startImpl(long id) {
+        // Load Site Info
+        Info info = new Info();
+        connection.send(info, infoResponse -> {
+            // Load Locations
+            AllLocations allLocations = new AllLocations(Constants.PLATFORM, infoResponse.site.id, true, false, true);
+            connection.send(allLocations, allLocationsResponse -> {
+                // Success
+                ListData data = new ListData(infoResponse.site.id);
+                // Find Active Locations
+                for (AllLocations.Response.Building building : allLocationsResponse.buildings) {
+                    if (building.active) {
+                        // Found Active Building
+                        ListData.Category category = new ListData.Category(building.name);
+                        for (AllLocations.Response.Location location : building.locations) {
+                            if (location.active) {
+                                // Found Active Location
+                                category.locations.add(new ListData.Category.Element(location.id, location.name));
+                            }
+                        }
+                        // Skip Empty Category
+                        if (category.locations.size() > 0) {
+                            data.categories.add(category);
+                        }
+                    }
+                }
+                done(id, data);
+            }, () -> {
+                // Failed Fetching Location Info
+                done(id, null);
+            });
+        }, () -> {
+            // Failed Fetching Site Info
+            done(id, null);
+        });
+    }
+}

app/src/main/java/com/thebrokenrail/mtudining/activity/list/ListViewModel.java

@@ -4,52 +4,11 @@ import androidx.lifecycle.ViewModel;
 
 import com.thebrokenrail.mtudining.activity.task.Task;
 import com.thebrokenrail.mtudining.api.Connection;
-import com.thebrokenrail.mtudining.api.method.AllLocations;
-import com.thebrokenrail.mtudining.api.method.Info;
-import com.thebrokenrail.mtudining.util.Constants;
 
 /**
  * Data preserved between screen rotations for {@link ListActivity}.
  */
 public class ListViewModel extends ViewModel {
     private final Connection connection = new Connection();
-    public final Task<ListData> task = new Task<ListData>() {
+    public final Task<ListData> task = new ListTask(connection);
-        @Override
-        protected void startImpl() {
-            // Load Site Info
-            Info info = new Info();
-            connection.send(info, infoResponse -> {
-                // Load Locations
-                AllLocations allLocations = new AllLocations(Constants.PLATFORM, infoResponse.site.id, true, false, true);
-                connection.send(allLocations, allLocationsResponse -> {
-                    // Success
-                    ListData data = new ListData(infoResponse.site.id);
-                    // Find Active Locations
-                    for (AllLocations.Response.Building building : allLocationsResponse.buildings) {
-                        if (building.active) {
-                            // Found Active Building
-                            ListData.Category category = new ListData.Category(building.name);
-                            for (AllLocations.Response.Location location : building.locations) {
-                                if (location.active) {
-                                    // Found Active Location
-                                    category.locations.add(new ListData.Element(location.id, location.name));
-                                }
-                            }
-                            // Skip Empty Category
-                            if (category.locations.size() > 0) {
-                                data.categories.add(category);
-                            }
-                        }
-                    }
-                    done(data);
-                }, () -> {
-                    // Failed Fetching Location Info
-                    done(null);
-                });
-            }, () -> {
-                // Failed Fetching Site Info
-                done(null);
-            });
-        }
-    };
 }

app/src/main/java/com/thebrokenrail/mtudining/activity/menu/MenuActivity.java

@@ -0,0 +1,76 @@
+package com.thebrokenrail.mtudining.activity.menu;
+
+import android.os.Bundle;
+import android.view.MenuItem;
+
+import androidx.activity.EdgeToEdge;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.google.android.material.appbar.MaterialToolbar;
+import com.thebrokenrail.mtudining.R;
+import com.thebrokenrail.mtudining.util.EdgeToEdgeUtil;
+
+import java.util.Date;
+import java.util.Objects;
+
+/**
+ * This activity lists the menu for a dining hall.
+ */
+public class MenuActivity extends AppCompatActivity {
+    public static final String NAME_EXTRA = "mtu_name";
+    public static final String ID_EXTRA = "mtu_id";
+
+    private MenuAdapter adapter;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        // Setup UI
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_list);
+
+        // Toolbar
+        MaterialToolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
+
+        // Get View Model
+        ViewModelProvider viewModelProvider = new ViewModelProvider(this);
+        MenuViewModel viewModel = viewModelProvider.get(MenuViewModel.class);
+
+        // Get Info
+        String name = getIntent().getStringExtra(NAME_EXTRA);
+        String id = getIntent().getStringExtra(ID_EXTRA);
+        toolbar.setTitle(name);
+        viewModel.task.setup(id, new Date());
+
+        // Setup RecyclerView
+        adapter = new MenuAdapter(viewModel.task);
+        RecyclerView recyclerView = findViewById(R.id.recycler_view);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setAdapter(adapter);
+        EdgeToEdgeUtil.setup(this, recyclerView);
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        adapter.onDestroy();
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        // Make back button in toolbar act as normal back button.
+        if (item.getItemId() == android.R.id.home) {
+            getOnBackPressedDispatcher().onBackPressed();
+            return true;
+        } else {
+            return super.onOptionsItemSelected(item);
+        }
+    }
+}

app/src/main/java/com/thebrokenrail/mtudining/activity/menu/MenuAdapter.java

@@ -0,0 +1,82 @@
+package com.thebrokenrail.mtudining.activity.menu;
+
+import android.text.InputType;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.google.android.material.textfield.MaterialAutoCompleteTextView;
+import com.google.android.material.textfield.TextInputEditText;
+import com.google.android.material.textfield.TextInputLayout;
+import com.thebrokenrail.mtudining.R;
+import com.thebrokenrail.mtudining.activity.task.Task;
+import com.thebrokenrail.mtudining.activity.task.TaskAdapter;
+import com.thebrokenrail.mtudining.util.DateUtil;
+import com.thebrokenrail.mtudining.widget.CategoryView;
+
+/**
+ * Adapter for listing dining halls.
+ */
+class MenuAdapter extends TaskAdapter<MenuData> {
+    MenuAdapter(Task<MenuData> task) {
+        super(task);
+    }
+
+    @Override
+    protected View createItemView(@NonNull ViewGroup parent) {
+        // Create View
+        CategoryView category = new CategoryView(parent.getContext(), null);
+        RecyclerView.LayoutParams layoutParams = new RecyclerView.LayoutParams(RecyclerView.LayoutParams.MATCH_PARENT, RecyclerView.LayoutParams.WRAP_CONTENT);
+        category.setLayoutParams(layoutParams);
+        return category;
+    }
+
+    @Override
+    protected void bindItemView(View view, int position) {
+        /*ListData.Category data = getResult().categories.get(position);
+        // Setup View
+        CategoryView category = (CategoryView) view;
+        category.setup(data.isOpen, data.name, () -> {
+            // Open/Close Category
+            data.isOpen = !data.isOpen;
+            notifyItemChanged(getResult().categories.indexOf(data));
+        });
+        // Add Locations
+        category.clearItems();
+        for (ListData.Category.Element location : data.locations) {
+            category.addItem(location.name, () -> {
+                // Do Something!
+            });
+        }*/
+    }
+
+    @Override
+    protected int getDataSize() {
+        return 0;
+    }
+
+    @Override
+    protected View createHeader(@NonNull ViewGroup parent) {
+        LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
+        return layoutInflater.inflate(R.layout.menu_header, parent, false);
+    }
+
+    @Override
+    protected void bindHeader(View view) {
+        // Set Date
+        MaterialAutoCompleteTextView date = view.findViewById(R.id.menu_date);
+        // Retrieve from Task as this must show even when result is not available.
+        date.setText(DateUtil.toString(((MenuTask) getTask()).getDate()));
+
+        // Set Meal
+        boolean hasMeal = getResult() != null;
+        TextInputLayout meal = view.findViewById(R.id.menu_meal_field);
+        meal.setEnabled(hasMeal);
+        if (hasMeal) {
+
+        }
+    }
+}

app/src/main/java/com/thebrokenrail/mtudining/activity/menu/MenuData.java

@@ -0,0 +1,42 @@
+package com.thebrokenrail.mtudining.activity.menu;
+
+import java.util.ArrayList;
+import java.util.List;
+
+class MenuData {
+    public static class Meal {
+        public static class Category {
+            public static class Element {
+                public final String id;
+                public final String name;
+                public final String description;
+
+                public Element(String id, String name, String description) {
+                    this.id = id;
+                    this.name = name;
+                    this.description = description;
+                }
+            }
+
+            public final String name;
+            public boolean isOpen = true;
+            public final List<Element> locations = new ArrayList<>();
+
+            public Category(String name) {
+                this.name = name;
+            }
+        }
+
+        public final String id;
+        public final String name;
+        public final List<Category> categories = new ArrayList<>();
+
+        public Meal(String id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+    }
+
+    public final List<Meal> meals = new ArrayList<>();
+    public String selectedMeal;
+}

app/src/main/java/com/thebrokenrail/mtudining/activity/menu/MenuTask.java

@@ -0,0 +1,55 @@
+package com.thebrokenrail.mtudining.activity.menu;
+
+import com.thebrokenrail.mtudining.activity.task.Task;
+import com.thebrokenrail.mtudining.api.Connection;
+import com.thebrokenrail.mtudining.api.method.Periods;
+import com.thebrokenrail.mtudining.util.Constants;
+
+import java.util.Date;
+
+public class MenuTask extends Task<MenuData> {
+    private final Connection connection;
+
+    private String locationId;
+    private Date date;
+
+    public MenuTask(Connection connection) {
+        this.connection = connection;
+    }
+
+    /**
+     * Setup task.
+     * @param locationId Location ID (or null to use existing)
+     * @param date Date
+     */
+    void setup(String locationId, Date date) {
+        if (locationId != null) {
+            this.locationId = locationId;
+        }
+        this.date = date;
+    }
+
+    /**
+     * Get date.
+     * @return The date
+     */
+    public Date getDate() {
+        return date;
+    }
+
+    @Override
+    protected void startImpl(long id) {
+        // Get Periods
+        Periods periods = new Periods(Constants.PLATFORM, locationId, date);
+        connection.send(periods, periodsResponse -> {
+            // Loaded Periods
+            for (Periods.Response.Period period : periodsResponse.periods) {
+                System.out.println("Period: " + period.name);
+            }
+            done(id, null);
+        }, () -> {
+            // Error
+            done(id, null);
+        });
+    }
+}

app/src/main/java/com/thebrokenrail/mtudining/activity/menu/MenuViewModel.java

@@ -0,0 +1,14 @@
+package com.thebrokenrail.mtudining.activity.menu;
+
+import androidx.lifecycle.ViewModel;
+
+import com.thebrokenrail.mtudining.activity.task.Task;
+import com.thebrokenrail.mtudining.api.Connection;
+
+/**
+ * Data preserved between screen rotations for {@link MenuActivity}.
+ */
+public class MenuViewModel extends ViewModel {
+    private final Connection connection = new Connection();
+    public final MenuTask task = new MenuTask(connection);
+}

app/src/main/java/com/thebrokenrail/mtudining/activity/task/Task.java

@@ -18,19 +18,26 @@ public abstract class Task<E> {
     }
     private Status status = Status.NOT_STARTED;
 
+    /**
+     * Last time when {@link #start()} was called.
+     */
+    private long lastStart;
+
     /**
      * Start task.
      */
     public void start() {
+        lastStart = System.currentTimeMillis();
         status = Status.IN_PROGRESS;
-        startImpl();
+        startImpl(lastStart);
         // Update Listeners
         sendDataToListeners();
     }
     /**
      * Implementation of {@link #start()}.
+     * @param id Unique id for each call of {@link #start()}
      */
-    protected abstract void startImpl();
+    protected abstract void startImpl(long id);
 
     /**
      * Currently stored result (or null if none).
@@ -39,9 +46,16 @@ public abstract class Task<E> {
 
     /**
      * Store result.
+     * @param id ID from {@link #startImpl(long)}
      * @param obj Result (or null if error)
      */
-    protected void done(E obj) {
+    protected void done(long id, E obj) {
+        // Check ID
+        if (id != lastStart) {
+            // Ignore
+            return;
+        }
+        // Store
         result = obj;
         // Update Status
         if (obj == null) {

app/src/main/java/com/thebrokenrail/mtudining/activity/task/TaskAdapter.java

@@ -1,18 +1,21 @@
 package com.thebrokenrail.mtudining.activity.task;
 
+import android.view.View;
 import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.thebrokenrail.mtudining.R;
 import com.thebrokenrail.mtudining.widget.LoaderView;
 
 /**
  * RecyclerView adapter for a given {@link Task}.
  */
-public abstract class TaskAdapter<E, VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements Task.Listener<E> {
+public abstract class TaskAdapter<E> extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements Task.Listener<E> {
     public static final int LOADER_TYPE = 1;
-    public static final int DATA_TYPE = 0;
+    public static final int ITEM_TYPE = 0;
+    public static final int HEADER_TYPE = 2;
 
     /**
      * The task.
@@ -56,11 +59,25 @@ public abstract class TaskAdapter<E, VH extends RecyclerView.ViewHolder> extends
     }
 
     /**
-     * Create view holder for item in task's result.
+     * Create view for item in task's result.
      * @param parent The view parent
-     * @return The new view holder
+     * @return The new view
      */
-    protected abstract VH createItemViewHolder(@NonNull ViewGroup parent);
+    protected abstract View createItemView(@NonNull ViewGroup parent);
+
+    /**
+     * Create view for header.
+     * @param parent The view parent
+     * @return The new view
+     */
+    protected View createHeader(@NonNull ViewGroup parent) {
+        // Just Create Margin
+        View view = new View(parent.getContext());
+        int margin = parent.getResources().getDimensionPixelSize(R.dimen.margin);
+        RecyclerView.LayoutParams layoutParams = new RecyclerView.LayoutParams(RecyclerView.LayoutParams.MATCH_PARENT, margin);
+        view.setLayoutParams(layoutParams);
+        return view;
+    }
 
     @NonNull
     @Override
@@ -71,9 +88,12 @@ public abstract class TaskAdapter<E, VH extends RecyclerView.ViewHolder> extends
             RecyclerView.LayoutParams layoutParams = new RecyclerView.LayoutParams(RecyclerView.LayoutParams.MATCH_PARENT, RecyclerView.LayoutParams.WRAP_CONTENT);
             loader.setLayoutParams(layoutParams);
             return new RecyclerView.ViewHolder(loader) {};
-        } else if (viewType == DATA_TYPE) {
+        } else if (viewType == ITEM_TYPE) {
             // Data
-            return createItemViewHolder(parent);
+            return new RecyclerView.ViewHolder(createItemView(parent)) {};
+        } else if (viewType == HEADER_TYPE) {
+            // Header
+            return new RecyclerView.ViewHolder(createHeader(parent)) {};
         } else {
             // Unknown
             throw new RuntimeException();
@@ -81,22 +101,31 @@ public abstract class TaskAdapter<E, VH extends RecyclerView.ViewHolder> extends
     }
 
     /**
-     * Bind view holder for item in task's result.
+     * Bind view for item in task's result.
-     * @param holder The view holder
+     * @param view The view
      * @param position The item's position
      */
-    protected abstract void bindDataViewHolder(@NonNull VH holder, int position);
+    protected abstract void bindItemView(View view, int position);
+
+    /**
+     * Bind view for header.
+     * @param view The view
+     */
+    protected void bindHeader(View view) {
+    }
 
-    @SuppressWarnings({"unchecked"})
     @Override
     public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
         int type = getItemViewType(position);
         if (type == LOADER_TYPE) {
             // Loader
             ((LoaderView) holder.itemView).setup(currentStatus == Task.Status.ERROR, task::start);
-        } else if (type == DATA_TYPE) {
+        } else if (type == ITEM_TYPE) {
             // Data
-            bindDataViewHolder((VH) holder, position);
+            bindItemView(holder.itemView, position);
+        } else if (type == HEADER_TYPE) {
+            // Header
+            bindHeader(holder.itemView);
         }
     }
 
@@ -108,23 +137,39 @@ public abstract class TaskAdapter<E, VH extends RecyclerView.ViewHolder> extends
 
     @Override
     public int getItemCount() {
+        int size;
         if (currentStatus != Task.Status.DONE) {
             // Only Loader
-            return 1;
+            size = 1;
         } else {
             // Data Size
-            return getDataSize();
+            size = getDataSize();
         }
+        // Header
+        size++;
+        // Return
+        return size;
+    }
+
+    /**
+     * Get position of first non-header element.
+     * @return Element position
+     */
+    public int getFirstElementPosition() {
+        return 1;
     }
 
     @Override
     public int getItemViewType(int position) {
-        if (currentStatus != Task.Status.DONE && position == 0) {
+        if (currentStatus != Task.Status.DONE && position == getFirstElementPosition()) {
             // Loader
             return LOADER_TYPE;
+        } else if (position == 0) {
+            // Header
+            return HEADER_TYPE;
         } else {
-            // Data
+            // Item
-            return DATA_TYPE;
+            return ITEM_TYPE;
         }
     }
 
@@ -160,4 +205,12 @@ public abstract class TaskAdapter<E, VH extends RecyclerView.ViewHolder> extends
         // Add Items
         notifyItemRangeInserted(0, getItemCount());
     }
+
+    /**
+     * Get task.
+     * @return The task
+     */
+    public Task<E> getTask() {
+        return task;
+    }
 }

app/src/main/java/com/thebrokenrail/mtudining/api/method/Periods.java

@@ -0,0 +1,38 @@
+package com.thebrokenrail.mtudining.api.method;
+
+import com.thebrokenrail.mtudining.api.Method;
+import com.thebrokenrail.mtudining.util.DateUtil;
+
+import java.util.Date;
+import java.util.List;
+
+public class Periods implements Method<Periods.Response> {
+    private final int platform;
+    private final String locationId;
+    private final String date;
+
+    public Periods(int platform, String locationId, Date date) {
+        this.platform = platform;
+        this.locationId = locationId;
+        this.date = DateUtil.toString(date);
+    }
+
+    @Override
+    public String getPath() {
+        return "/location/" + locationId + "/periods?platform=" + platform + "&date=" + date;
+    }
+
+    @Override
+    public Class<Response> getResponseClass() {
+        return Response.class;
+    }
+
+    public static class Response {
+        public static class Period {
+            public String id;
+            public int sort_order;
+            public String name;
+        }
+        public List<Period> periods;
+    }
+}

app/src/main/java/com/thebrokenrail/mtudining/util/DateUtil.java

@@ -0,0 +1,13 @@
+package com.thebrokenrail.mtudining.util;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+
+public class DateUtil {
+    public static String toString(Date date) {
+        DateFormat df = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
+        return df.format(date);
+    }
+}

app/src/main/java/com/thebrokenrail/mtudining/widget/CategoryView.java

@@ -19,7 +19,7 @@ import com.thebrokenrail.mtudining.R;
  */
 public class CategoryView extends FrameLayout {
     private final MaterialCardView card;
-    public final LinearLayout children;
+    private final LinearLayout children;
     private final AppCompatTextView title;
 
     public CategoryView(@NonNull Context context, @Nullable AttributeSet attrs) {
@@ -31,7 +31,7 @@ public class CategoryView extends FrameLayout {
         // Set Margin
         LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
         int margin = getResources().getDimensionPixelSize(R.dimen.margin);
-        layoutParams.setMargins(margin, margin, margin, margin);
+        layoutParams.setMargins(margin, 0, margin, margin);
         inner.setLayoutParams(layoutParams);
 
         // Add Title
@@ -74,4 +74,40 @@ public class CategoryView extends FrameLayout {
         card.setVisibility(isOpen ? VISIBLE : GONE);
         title.setOnClickListener(v -> onClickTitle.run());
     }
+
+    /**
+     * Clear category.
+     */
+    public void clearItems() {
+        children.removeAllViews();
+    }
+
+    /**
+     * Add item.
+     * @param name Item name
+     * @param onClick Click handler
+     */
+    public void addItem(String name, Runnable onClick) {
+        AppCompatTextView item = new AppCompatTextView(getContext());
+        // Text
+        item.setText(name);
+        // Text Size
+        item.setTextSize(TypedValue.COMPLEX_UNIT_PX, item.getResources().getDimension(R.dimen.item_font_size));
+        // Padding
+        int margin = getResources().getDimensionPixelSize(R.dimen.margin);
+        item.setPadding(margin, margin, margin, margin);
+        // Make Clickable
+        item.setClickable(true);
+        item.setFocusable(true);
+        item.setOnClickListener(v -> onClick.run());
+        // Ripple Effect
+        TypedValue outValue = new TypedValue();
+        getContext().getTheme().resolveAttribute(androidx.appcompat.R.attr.selectableItemBackground, outValue, true);
+        item.setBackgroundResource(outValue.resourceId);
+        // Layout
+        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
+        item.setLayoutParams(layoutParams);
+        // Add To View
+        children.addView(item);
+    }
 }

app/src/main/java/com/thebrokenrail/mtudining/widget/LoaderView.java

@@ -29,7 +29,7 @@ public class LoaderView extends LinearLayout {
         // Set Margin
         LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
         int margin = getResources().getDimensionPixelSize(R.dimen.margin);
-        layoutParams.setMargins(margin, margin, margin, margin);
+        layoutParams.setMargins(margin, 0, margin, margin);
         inner.setLayoutParams(layoutParams);
     }
 

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

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical">
+
+    <!-- Date -->
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/menu_date_field"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/margin"
+        android:hint="@string/date"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox.ExposedDropdownMenu"
+        app:endIconMode="none">
+
+        <com.google.android.material.textfield.MaterialAutoCompleteTextView
+            android:id="@+id/menu_date"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="none" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <!-- Meal -->
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/menu_meal_field"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="@dimen/margin"
+        android:layout_marginStart="@dimen/margin"
+        android:layout_marginEnd="@dimen/margin"
+        android:hint="@string/meal"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox.ExposedDropdownMenu">
+
+        <com.google.android.material.textfield.MaterialAutoCompleteTextView
+            android:id="@+id/menu_meal"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="none" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+</LinearLayout>

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

@@ -3,4 +3,6 @@
     <string name="app_name">Dining[MTU]</string>
     <string name="retry">Retry</string>
     <string name="load_error">Unable to load data!</string>
+    <string name="date">Date</string>
+    <string name="meal">Meal</string>
 </resources>