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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.RestrictedPreference;
     30 import com.android.settingslib.core.AbstractPreferenceController;
     31 
     32 import java.util.Calendar;
     33 
     34 public class TimePreferenceController extends AbstractPreferenceController
     35         implements PreferenceControllerMixin, TimePickerDialog.OnTimeSetListener {
     36 
     37     public interface TimePreferenceHost extends UpdateTimeAndDateCallback {
     38         void showTimePicker();
     39     }
     40 
     41     public static final int DIALOG_TIMEPICKER = 1;
     42 
     43     private static final String KEY_TIME = "time";
     44 
     45     private final AutoTimePreferenceController mAutoTimePreferenceController;
     46     private final TimePreferenceHost mHost;
     47 
     48 
     49     public TimePreferenceController(Context context,
     50             TimePreferenceHost callback,
     51             AutoTimePreferenceController autoTimePreferenceController) {
     52         super(context);
     53         mHost = callback;
     54         mAutoTimePreferenceController = autoTimePreferenceController;
     55     }
     56 
     57     @Override
     58     public boolean isAvailable() {
     59         return true;
     60     }
     61 
     62     @Override
     63     public void updateState(Preference preference) {
     64         if (!(preference instanceof RestrictedPreference)) {
     65             return;
     66         }
     67         final Calendar now = Calendar.getInstance();
     68         preference.setSummary(DateFormat.getTimeFormat(mContext).format(now.getTime()));
     69         if (!((RestrictedPreference) preference).isDisabledByAdmin()) {
     70             preference.setEnabled(!mAutoTimePreferenceController.isEnabled());
     71         }
     72     }
     73 
     74     @Override
     75     public boolean handlePreferenceTreeClick(Preference preference) {
     76         if (!TextUtils.equals(KEY_TIME, preference.getKey())) {
     77             return false;
     78         }
     79         mHost.showTimePicker();
     80         return true;
     81     }
     82 
     83     @Override
     84     public String getPreferenceKey() {
     85         return KEY_TIME;
     86     }
     87 
     88     @Override
     89     public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
     90         if (mContext != null) {
     91             setTime(hourOfDay, minute);
     92             mHost.updateTimeAndDateDisplay(mContext);
     93         }
     94         // We don't need to call timeUpdated() here because the TIME_CHANGED
     95         // broadcast is sent by the AlarmManager as a side effect of setting the
     96         // SystemClock time.
     97     }
     98 
     99     public TimePickerDialog buildTimePicker(Activity activity) {
    100         final Calendar calendar = Calendar.getInstance();
    101         return new TimePickerDialog(
    102                 activity,
    103                 this,
    104                 calendar.get(Calendar.HOUR_OF_DAY),
    105                 calendar.get(Calendar.MINUTE),
    106                 DateFormat.is24HourFormat(activity));
    107     }
    108 
    109     void setTime(int hourOfDay, int minute) {
    110         Calendar c = Calendar.getInstance();
    111 
    112         c.set(Calendar.HOUR_OF_DAY, hourOfDay);
    113         c.set(Calendar.MINUTE, minute);
    114         c.set(Calendar.SECOND, 0);
    115         c.set(Calendar.MILLISECOND, 0);
    116         long when = Math.max(c.getTimeInMillis(), TimePreferenceHost.MIN_DATE);
    117 
    118         if (when / 1000 < Integer.MAX_VALUE) {
    119             ((AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE)).setTime(when);
    120         }
    121     }
    122 }
    123