Move date/time prefs to PreferenceController and add tests.

Bug: 32996243
Test: RunSettingsRoboTests
Change-Id: Ie537bbcc35a96a63251e46f84b57c0a861b9d013

src/com/android/settings/datetime/TimePreferenceController.java

@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2016 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.settings.datetime;
+
+import android.app.Activity;
+import android.app.AlarmManager;
+import android.app.TimePickerDialog;
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import android.text.TextUtils;
+import android.text.format.DateFormat;
+import android.widget.TimePicker;
+
+import com.android.settings.core.PreferenceController;
+
+import java.util.Calendar;
+
+public class TimePreferenceController extends PreferenceController implements
+        TimePickerDialog.OnTimeSetListener {
+
+    public interface TimePreferenceHost extends UpdateTimeAndDateCallback {
+        void showTimePicker();
+    }
+
+    public static final int DIALOG_TIMEPICKER = 1;
+
+    private static final String KEY_TIME = "time";
+
+    private final AutoTimePreferenceController mAutoTimePreferenceController;
+    private final TimePreferenceHost mHost;
+
+
+    public TimePreferenceController(Context context,
+            TimePreferenceHost callback,
+            AutoTimePreferenceController autoTimePreferenceController) {
+        super(context);
+        mHost = callback;
+        mAutoTimePreferenceController = autoTimePreferenceController;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final Calendar now = Calendar.getInstance();
+        preference.setSummary(DateFormat.getTimeFormat(mContext).format(now.getTime()));
+        preference.setEnabled(!mAutoTimePreferenceController.isEnabled());
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (!TextUtils.equals(KEY_TIME, preference.getKey())) {
+            return false;
+        }
+        mHost.showTimePicker();
+        return true;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_TIME;
+    }
+
+    @Override
+    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
+        if (mContext != null) {
+            setTime(hourOfDay, minute);
+            mHost.updateTimeAndDateDisplay(mContext);
+        }
+        // We don't need to call timeUpdated() here because the TIME_CHANGED
+        // broadcast is sent by the AlarmManager as a side effect of setting the
+        // SystemClock time.
+    }
+
+    public TimePickerDialog buildTimePicker(Activity activity) {
+        final Calendar calendar = Calendar.getInstance();
+        return new TimePickerDialog(
+                activity,
+                this,
+                calendar.get(Calendar.HOUR_OF_DAY),
+                calendar.get(Calendar.MINUTE),
+                DateFormat.is24HourFormat(activity));
+    }
+
+    void setTime(int hourOfDay, int minute) {
+        Calendar c = Calendar.getInstance();
+
+        c.set(Calendar.HOUR_OF_DAY, hourOfDay);
+        c.set(Calendar.MINUTE, minute);
+        c.set(Calendar.SECOND, 0);
+        c.set(Calendar.MILLISECOND, 0);
+        long when = Math.max(c.getTimeInMillis(), TimePreferenceHost.MIN_DATE);
+
+        if (when / 1000 < Integer.MAX_VALUE) {
+            ((AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE)).setTime(when);
+        }
+    }
+}