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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.settings.datetime;
     18 
     19 import android.app.Activity;
     20 import android.app.AlarmManager;
     21 import android.app.TimePickerDialog;
     22 import android.content.Context;
     23 import android.support.v7.preference.Preference;
     24 import android.text.TextUtils;
     25 import android.text.format.DateFormat;
     26 import android.widget.TimePicker;
     27 
     28 import com.android.settings.core.PreferenceControllerMixin;
     29 import com.android.settingslib.core.AbstractPreferenceController;
     30 
     31 import java.util.Calendar;
     32 
     33 public class TimePreferenceController extends AbstractPreferenceController
     34         implements PreferenceControllerMixin, TimePickerDialog.OnTimeSetListener {
     35 
     36     public interface TimePreferenceHost extends UpdateTimeAndDateCallback {
     37         void showTimePicker();
     38     }
     39 
     40     public static final int DIALOG_TIMEPICKER = 1;
     41 
     42     private static final String KEY_TIME = "time";
     43 
     44     private final AutoTimePreferenceController mAutoTimePreferenceController;
     45     private final TimePreferenceHost mHost;
     46 
     47 
     48     public TimePreferenceController(Context context,
     49             TimePreferenceHost callback,
     50             AutoTimePreferenceController autoTimePreferenceController) {
     51         super(context);
     52         mHost = callback;
     53         mAutoTimePreferenceController = autoTimePreferenceController;
     54     }
     55 
     56     @Override
     57     public boolean isAvailable() {
     58         return true;
     59     }
     60 
     61     @Override
     62     public void updateState(Preference preference) {
     63         final Calendar now = Calendar.getInstance();
     64         preference.setSummary(DateFormat.getTimeFormat(mContext).format(now.getTime()));
     65         preference.setEnabled(!mAutoTimePreferenceController.isEnabled());
     66     }
     67 
     68     @Override
     69     public boolean handlePreferenceTreeClick(Preference preference) {
     70         if (!TextUtils.equals(KEY_TIME, preference.getKey())) {
     71             return false;
     72         }
     73         mHost.showTimePicker();
     74         return true;
     75     }
     76 
     77     @Override
     78     public String getPreferenceKey() {
     79         return KEY_TIME;
     80     }
     81 
     82     @Override
     83     public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
     84         if (mContext != null) {
     85             setTime(hourOfDay, minute);
     86             mHost.updateTimeAndDateDisplay(mContext);
     87         }
     88         // We don't need to call timeUpdated() here because the TIME_CHANGED
     89         // broadcast is sent by the AlarmManager as a side effect of setting the
     90         // SystemClock time.
     91     }
     92 
     93     public TimePickerDialog buildTimePicker(Activity activity) {
     94         final Calendar calendar = Calendar.getInstance();
     95         return new TimePickerDialog(
     96                 activity,
     97                 this,
     98                 calendar.get(Calendar.HOUR_OF_DAY),
     99                 calendar.get(Calendar.MINUTE),
    100                 DateFormat.is24HourFormat(activity));
    101     }
    102 
    103     void setTime(int hourOfDay, int minute) {
    104         Calendar c = Calendar.getInstance();
    105 
    106         c.set(Calendar.HOUR_OF_DAY, hourOfDay);
    107         c.set(Calendar.MINUTE, minute);
    108         c.set(Calendar.SECOND, 0);
    109         c.set(Calendar.MILLISECOND, 0);
    110         long when = Math.max(c.getTimeInMillis(), TimePreferenceHost.MIN_DATE);
    111 
    112         if (when / 1000 < Integer.MAX_VALUE) {
    113             ((AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE)).setTime(when);
    114         }
    115     }
    116 }
    117