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      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 
     17 package com.android.deskclock.timer;
     18 
     19 import android.app.Fragment;
     20 import android.app.FragmentManager;
     21 import android.content.SharedPreferences;
     22 import android.support.v4.view.PagerAdapter;
     23 
     24 import java.util.ArrayList;
     25 import java.util.Collections;
     26 import java.util.Comparator;
     27 
     28 public class TimerFragmentAdapter extends FragmentStatePagerAdapter2 {
     29 
     30     private final ArrayList<TimerObj> mTimerList = new ArrayList<TimerObj>();
     31     private final SharedPreferences mSharedPrefs;
     32 
     33     public TimerFragmentAdapter(FragmentManager fm, SharedPreferences sharedPreferences) {
     34         super(fm);
     35         mSharedPrefs = sharedPreferences;
     36     }
     37 
     38     @Override
     39     public int getItemPosition(Object object) {
     40         // Force return NONE so that the adapter always assumes the item position has changed
     41         return PagerAdapter.POSITION_NONE;
     42     }
     43 
     44     @Override
     45     public int getCount() {
     46         return mTimerList.size();
     47     }
     48 
     49     @Override
     50     public Fragment getItem(int position) {
     51         return TimerItemFragment.newInstance(mTimerList.get(position));
     52     }
     53 
     54     public void addTimer(TimerObj timer) {
     55         // Newly created timer should always show on the top of the list
     56         mTimerList.add(0, timer);
     57         notifyDataSetChanged();
     58     }
     59 
     60     public TimerObj getTimerAt(int position) {
     61         return mTimerList.get(position);
     62     }
     63 
     64     public void saveTimersToSharedPrefs() {
     65         TimerObj.putTimersInSharedPrefs(mSharedPrefs, mTimerList);
     66     }
     67 
     68     public void populateTimersFromPref() {
     69         mTimerList.clear();
     70         TimerObj.getTimersFromSharedPrefs(mSharedPrefs, mTimerList);
     71         Collections.sort(mTimerList, new Comparator<TimerObj>() {
     72             @Override
     73             public int compare(TimerObj o1, TimerObj o2) {
     74                 return (o2.mTimerId < o1.mTimerId) ? -1 : 1;
     75             }
     76         });
     77 
     78         notifyDataSetChanged();
     79     }
     80 
     81     public void deleteTimer(int id) {
     82         for (int i = 0; i < mTimerList.size(); i++) {
     83             TimerObj timer = mTimerList.get(i);
     84             if (timer.mTimerId == id) {
     85                 if (timer.mView != null) {
     86                     timer.mView.stop();
     87                 }
     88                 timer.deleteFromSharedPref(mSharedPrefs);
     89                 mTimerList.remove(i);
     90                 break;
     91             }
     92         }
     93 
     94         notifyDataSetChanged();
     95         return;
     96     }
     97 
     98     // Return position of the timer with the given timerId. If the timer is not in the list,
     99     // return 0 so we get the position of the newest timer.
    100     public int getTimerPosition(int id) {
    101         for (int i = 0; i < mTimerList.size(); i++) {
    102             TimerObj timer = mTimerList.get(i);
    103             if (timer.mTimerId == id) {
    104                 return i;
    105             }
    106         }
    107         return 0;
    108     }
    109 }
    110