1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.deskclock.actionbarmenu;
18 
19 import android.app.Activity;
20 
21 import java.util.ArrayList;
22 import java.util.List;
23 
24 /**
25  * Factory that builds optional {@link MenuItemController} instances.
26  */
27 public final class MenuItemControllerFactory {
28 
29     private static final MenuItemControllerFactory INSTANCE = new MenuItemControllerFactory();
30 
getInstance()31     public static MenuItemControllerFactory getInstance() {
32         return INSTANCE;
33     }
34 
35     private final List<MenuItemProvider> mMenuItemProviders;
36 
MenuItemControllerFactory()37     private MenuItemControllerFactory() {
38         mMenuItemProviders = new ArrayList<>();
39     }
40 
addMenuItemProvider(MenuItemProvider provider)41     public MenuItemControllerFactory addMenuItemProvider(MenuItemProvider provider) {
42         mMenuItemProviders.add(provider);
43         return this;
44     }
45 
buildMenuItemControllers(Activity activity)46     public MenuItemController[] buildMenuItemControllers(Activity activity) {
47         final int providerSize = mMenuItemProviders.size();
48         final MenuItemController[] controllers = new MenuItemController[providerSize];
49         for (int i = 0; i < providerSize; i++) {
50             controllers[i] = mMenuItemProviders.get(i).provide(activity);
51         }
52         return controllers;
53     }
54 }
55