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/*
* Copyright (C) 2014 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.contacts.interactions;
import com.google.common.base.Preconditions;
import android.content.Context;
import android.text.format.DateUtils;
import com.android.contacts.common.testing.NeededForTesting;
import java.text.DateFormat;
import java.util.Calendar;
import com.android.contacts.common.R;
/**
* Utility methods for interactions and their loaders
*/
public class ContactInteractionUtil {
/**
* @return a string like (?,?,?...) with {@param count} question marks.
*/
@NeededForTesting
public static String questionMarks(int count) {
Preconditions.checkArgument(count > 0);
StringBuilder sb = new StringBuilder("(?");
for (int i = 1; i < count; i++) {
sb.append(",?");
}
return sb.append(")").toString();
}
/**
* Same as {@link formatDateStringFromTimestamp(long, Context, Calendar)} but uses the current
* time.
*/
@NeededForTesting
public static String formatDateStringFromTimestamp(long timestamp, Context context) {
return formatDateStringFromTimestamp(timestamp, context, Calendar.getInstance());
}
/**
* Takes in a timestamp and outputs a human legible date. This checks the timestamp against
* compareCalendar.
* This formats the date based on a few conditions:
* 1. If the timestamp is today, the time is shown
* 2. If the timestamp occurs tomorrow or yesterday, that is displayed
* 3. Otherwise {Month Date} format is used
*/
@NeededForTesting
public static String formatDateStringFromTimestamp(long timestamp, Context context,
Calendar compareCalendar) {
Calendar interactionCalendar = Calendar.getInstance();
interactionCalendar.setTimeInMillis(timestamp);
// compareCalendar is initialized to today
if (compareCalendarDayYear(interactionCalendar, compareCalendar)) {
return DateFormat.getTimeInstance(DateFormat.SHORT).format(
interactionCalendar.getTime());
}
// Turn compareCalendar to yesterday
compareCalendar.add(Calendar.DAY_OF_YEAR, -1);
if (compareCalendarDayYear(interactionCalendar, compareCalendar)) {
return context.getString(R.string.timestamp_string_yesterday);
}
// Turn compareCalendar to tomorrow
compareCalendar.add(Calendar.DAY_OF_YEAR, 2);
if (compareCalendarDayYear(interactionCalendar, compareCalendar)) {
return context.getString(R.string.timestamp_string_tomorrow);
}
return DateUtils.formatDateTime(context, interactionCalendar.getTimeInMillis(),
DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_NO_YEAR);
}
/**
* Compares the day and year of two calendars.
*/
private static boolean compareCalendarDayYear(Calendar c1, Calendar c2) {
return c1.get(Calendar.YEAR) == c2.get(Calendar.YEAR) &&
c1.get(Calendar.DAY_OF_YEAR) == c2.get(Calendar.DAY_OF_YEAR);
}
}
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