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      1 /*
      2  * Copyright (C) 2016 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.tv.dvr.ui.list;
     18 
     19 import android.os.Bundle;
     20 import android.support.v17.leanback.app.DetailsFragment;
     21 import android.support.v17.leanback.widget.ClassPresenterSelector;
     22 import android.view.LayoutInflater;
     23 import android.view.View;
     24 import android.view.ViewGroup;
     25 import android.widget.TextView;
     26 import com.android.tv.R;
     27 import com.android.tv.TvSingletons;
     28 import com.android.tv.dvr.DvrDataManager;
     29 import com.android.tv.dvr.DvrScheduleManager;
     30 import com.android.tv.dvr.data.ScheduledRecording;
     31 
     32 /** A base fragment to show the list of schedule recordings. */
     33 public abstract class BaseDvrSchedulesFragment extends DetailsFragment
     34         implements DvrDataManager.ScheduledRecordingListener,
     35                 DvrScheduleManager.OnConflictStateChangeListener {
     36     /** The key for scheduled recording which has be selected in the list. */
     37     public static final String SCHEDULES_KEY_SCHEDULED_RECORDING =
     38             "schedules_key_scheduled_recording";
     39 
     40     private ScheduleRowAdapter mRowsAdapter;
     41     private TextView mEmptyInfoScreenView;
     42 
     43     @Override
     44     public void onCreate(Bundle savedInstanceState) {
     45         super.onCreate(savedInstanceState);
     46         ClassPresenterSelector presenterSelector = new ClassPresenterSelector();
     47         presenterSelector.addClassPresenter(SchedulesHeaderRow.class, onCreateHeaderRowPresenter());
     48         presenterSelector.addClassPresenter(ScheduleRow.class, onCreateRowPresenter());
     49         mRowsAdapter = onCreateRowsAdapter(presenterSelector);
     50         setAdapter(mRowsAdapter);
     51         mRowsAdapter.start();
     52         TvSingletons singletons = TvSingletons.getSingletons(getContext());
     53         singletons.getDvrDataManager().addScheduledRecordingListener(this);
     54         singletons.getDvrScheduleManager().addOnConflictStateChangeListener(this);
     55         mEmptyInfoScreenView = (TextView) getActivity().findViewById(R.id.empty_info_screen);
     56     }
     57 
     58     @Override
     59     public View onCreateView(
     60             LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
     61         View view = super.onCreateView(inflater, container, savedInstanceState);
     62         int firstItemPosition = getFirstItemPosition();
     63         if (firstItemPosition != -1) {
     64             getRowsFragment().setSelectedPosition(firstItemPosition, false);
     65         }
     66         return view;
     67     }
     68 
     69     /** Returns rows adapter. */
     70     protected ScheduleRowAdapter getRowsAdapter() {
     71         return mRowsAdapter;
     72     }
     73 
     74     /** Shows the empty message. */
     75     void showEmptyMessage(int messageId) {
     76         mEmptyInfoScreenView.setText(messageId);
     77         if (mEmptyInfoScreenView.getVisibility() != View.VISIBLE) {
     78             mEmptyInfoScreenView.setVisibility(View.VISIBLE);
     79         }
     80     }
     81 
     82     /** Hides the empty message. */
     83     void hideEmptyMessage() {
     84         if (mEmptyInfoScreenView.getVisibility() == View.VISIBLE) {
     85             mEmptyInfoScreenView.setVisibility(View.GONE);
     86         }
     87     }
     88 
     89     @Override
     90     public View onInflateTitleView(
     91             LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
     92         // Workaround of b/31046014
     93         return null;
     94     }
     95 
     96     @Override
     97     public void onDestroy() {
     98         TvSingletons singletons = TvSingletons.getSingletons(getContext());
     99         singletons.getDvrScheduleManager().removeOnConflictStateChangeListener(this);
    100         singletons.getDvrDataManager().removeScheduledRecordingListener(this);
    101         mRowsAdapter.stop();
    102         super.onDestroy();
    103     }
    104 
    105     /** Creates header row presenter. */
    106     public abstract SchedulesHeaderRowPresenter onCreateHeaderRowPresenter();
    107 
    108     /** Creates rows presenter. */
    109     public abstract ScheduleRowPresenter onCreateRowPresenter();
    110 
    111     /** Creates rows adapter. */
    112     public abstract ScheduleRowAdapter onCreateRowsAdapter(
    113         ClassPresenterSelector presenterSelector);
    114 
    115     /** Gets the first focus position in schedules list. */
    116     protected int getFirstItemPosition() {
    117         for (int i = 0; i < mRowsAdapter.size(); i++) {
    118             if (mRowsAdapter.get(i) instanceof ScheduleRow) {
    119                 return i;
    120             }
    121         }
    122         return -1;
    123     }
    124 
    125     @Override
    126     public void onScheduledRecordingAdded(ScheduledRecording... scheduledRecordings) {
    127         if (mRowsAdapter != null) {
    128             for (ScheduledRecording recording : scheduledRecordings) {
    129                 mRowsAdapter.onScheduledRecordingAdded(recording);
    130             }
    131         }
    132     }
    133 
    134     @Override
    135     public void onScheduledRecordingRemoved(ScheduledRecording... scheduledRecordings) {
    136         if (mRowsAdapter != null) {
    137             for (ScheduledRecording recording : scheduledRecordings) {
    138                 mRowsAdapter.onScheduledRecordingRemoved(recording);
    139             }
    140         }
    141     }
    142 
    143     @Override
    144     public void onScheduledRecordingStatusChanged(ScheduledRecording... scheduledRecordings) {
    145         if (mRowsAdapter != null) {
    146             for (ScheduledRecording recording : scheduledRecordings) {
    147                 mRowsAdapter.onScheduledRecordingUpdated(recording, false);
    148             }
    149         }
    150     }
    151 
    152     @Override
    153     public void onConflictStateChange(boolean conflict, ScheduledRecording... schedules) {
    154         if (mRowsAdapter != null) {
    155             for (ScheduledRecording recording : schedules) {
    156                 mRowsAdapter.onScheduledRecordingUpdated(recording, true);
    157             }
    158         }
    159     }
    160 }
    161