1/*
2 * Copyright (C) 2014 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
17package com.android.layoutlib.bridge.bars;
18
19import com.android.internal.view.menu.MenuBuilder;
20import com.android.internal.view.menu.MenuItemImpl;
21import com.android.internal.view.menu.MenuView;
22
23import android.content.Context;
24import android.view.LayoutInflater;
25import android.view.View;
26import android.view.ViewGroup;
27import android.widget.BaseAdapter;
28
29import java.util.ArrayList;
30
31/**
32 * Provides an adapter for Overflow menu popup. This is very similar to
33 * {@code MenuPopupHelper.MenuAdapter}
34 */
35public class OverflowMenuAdapter extends BaseAdapter {
36
37    private final MenuBuilder mMenu;
38    private int mExpandedIndex = -1;
39    private final Context context;
40
41    public OverflowMenuAdapter(MenuBuilder menu, Context context) {
42        mMenu = menu;
43        findExpandedIndex();
44        this.context = context;
45    }
46
47    @Override
48    public int getCount() {
49        ArrayList<MenuItemImpl> items = mMenu.getNonActionItems();
50        if (mExpandedIndex < 0) {
51            return items.size();
52        }
53        return items.size() - 1;
54    }
55
56    @Override
57    public MenuItemImpl getItem(int position) {
58        ArrayList<MenuItemImpl> items = mMenu.getNonActionItems();
59        if (mExpandedIndex >= 0 && position >= mExpandedIndex) {
60            position++;
61        }
62        return items.get(position);
63    }
64
65    @Override
66    public long getItemId(int position) {
67        // Since a menu item's ID is optional, we'll use the position as an
68        // ID for the item in the AdapterView
69        return position;
70    }
71
72    @Override
73    public View getView(int position, View convertView, ViewGroup parent) {
74        if (convertView == null) {
75            LayoutInflater mInflater = LayoutInflater.from(context);
76            convertView = mInflater.inflate(com.android.internal.R.layout.popup_menu_item_layout,
77                    parent, false);
78        }
79
80        MenuView.ItemView itemView = (MenuView.ItemView) convertView;
81        itemView.initialize(getItem(position), 0);
82        return convertView;
83    }
84
85    private void findExpandedIndex() {
86        final MenuItemImpl expandedItem = mMenu.getExpandedItem();
87        if (expandedItem != null) {
88            final ArrayList<MenuItemImpl> items = mMenu.getNonActionItems();
89            final int count = items.size();
90            for (int i = 0; i < count; i++) {
91                final MenuItemImpl item = items.get(i);
92                if (item == expandedItem) {
93                    mExpandedIndex = i;
94                    return;
95                }
96            }
97        }
98    }
99}
100