| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.tv.menu; |
| |
| import android.content.Context; |
| import com.android.tv.R; |
| import com.android.tv.data.ProgramDataManager; |
| import com.android.tv.recommendation.RecentChannelEvaluator; |
| import com.android.tv.recommendation.Recommender; |
| |
| public class ChannelsRow extends ItemListRow { |
| public static final String ID = ChannelsRow.class.getName(); |
| |
| /** Minimum count for recent channels. */ |
| public static final int MIN_COUNT_FOR_RECENT_CHANNELS = 5; |
| /** Maximum count for recent channels. */ |
| public static final int MAX_COUNT_FOR_RECENT_CHANNELS = 10; |
| |
| private Recommender mTvRecommendation; |
| private ChannelsRowAdapter mChannelsAdapter; |
| private ChannelsPosterPrefetcher mChannelsPosterPrefetcher; |
| |
| public ChannelsRow(Context context, Menu menu, ProgramDataManager programDataManager) { |
| super(context, menu, R.string.menu_title_channels, R.dimen.card_layout_height, null); |
| mTvRecommendation = |
| new Recommender( |
| getContext(), |
| new Recommender.Listener() { |
| @Override |
| public void onRecommenderReady() { |
| mChannelsAdapter.update(); |
| mChannelsPosterPrefetcher.prefetch(); |
| } |
| |
| @Override |
| public void onRecommendationChanged() { |
| mChannelsAdapter.update(); |
| mChannelsPosterPrefetcher.prefetch(); |
| } |
| }, |
| true); |
| mTvRecommendation.registerEvaluator(new RecentChannelEvaluator()); |
| mChannelsAdapter = |
| new ChannelsRowAdapter( |
| context, |
| mTvRecommendation, |
| MIN_COUNT_FOR_RECENT_CHANNELS, |
| MAX_COUNT_FOR_RECENT_CHANNELS); |
| setAdapter(mChannelsAdapter); |
| mChannelsPosterPrefetcher = |
| new ChannelsPosterPrefetcher(context, programDataManager, mChannelsAdapter); |
| } |
| |
| @Override |
| public void release() { |
| super.release(); |
| if (mTvRecommendation != null) { |
| mTvRecommendation.release(); |
| mTvRecommendation = null; |
| } |
| mChannelsPosterPrefetcher.cancel(); |
| mChannelsAdapter.release(); |
| } |
| |
| /** Handle the update event of the recent channel. */ |
| @Override |
| public void onRecentChannelsChanged() { |
| mChannelsPosterPrefetcher.prefetch(); |
| } |
| |
| @Override |
| public String getId() { |
| return ID; |
| } |
| } |