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
17package com.example.android.supportv4.media;
18
19import android.app.Activity;
20import android.support.v4.content.ContextCompat;
21import android.support.v4.media.session.MediaSessionCompat;
22import android.view.LayoutInflater;
23import android.view.View;
24import android.view.ViewGroup;
25import android.widget.ArrayAdapter;
26import android.widget.ImageView;
27import android.widget.TextView;
28
29import com.example.android.supportv4.R;
30
31import java.util.ArrayList;
32
33/**
34 * A list adapter for items in a queue
35 */
36public class QueueAdapter extends ArrayAdapter<MediaSessionCompat.QueueItem> {
37
38    // The currently selected/active queue item Id.
39    private long mActiveQueueItemId = MediaSessionCompat.QueueItem.UNKNOWN_ID;
40
41    public QueueAdapter(Activity context) {
42        super(context, R.layout.media_list_item, new ArrayList<MediaSessionCompat.QueueItem>());
43    }
44
45    public void setActiveQueueItemId(long id) {
46        this.mActiveQueueItemId = id;
47    }
48
49    private static class ViewHolder {
50        ImageView mImageView;
51        TextView mTitleView;
52        TextView mDescriptionView;
53    }
54
55    @Override
56    public View getView(int position, View convertView, ViewGroup parent) {
57        ViewHolder holder;
58
59        if (convertView == null) {
60            convertView = LayoutInflater.from(getContext())
61                    .inflate(R.layout.media_list_item, parent, false);
62            holder = new ViewHolder();
63            holder.mImageView = (ImageView) convertView.findViewById(R.id.play_eq);
64            holder.mTitleView = (TextView) convertView.findViewById(R.id.title);
65            holder.mDescriptionView = (TextView) convertView.findViewById(R.id.description);
66            convertView.setTag(holder);
67        } else {
68            holder = (ViewHolder) convertView.getTag();
69        }
70
71        MediaSessionCompat.QueueItem item = getItem(position);
72        holder.mTitleView.setText(item.getDescription().getTitle());
73        if (item.getDescription().getDescription() != null) {
74            holder.mDescriptionView.setText(item.getDescription().getDescription());
75        }
76
77        // If the itemId matches the active Id then use a different icon
78        if (mActiveQueueItemId == item.getQueueId()) {
79            holder.mImageView.setImageDrawable(
80                    ContextCompat.getDrawable(getContext(), R.drawable.ic_equalizer_white_24dp));
81        } else {
82            holder.mImageView.setImageDrawable(
83                    ContextCompat.getDrawable(getContext(), R.drawable.ic_play_arrow_white_24dp));
84        }
85        return convertView;
86    }
87}
88