| /* |
| * Copyright (C) 2012 Google Inc. |
| * Licensed to 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.mail; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.text.format.DateUtils; |
| import android.text.format.Time; |
| |
| import java.util.Formatter; |
| |
| /** |
| * Convenience class to efficiently make multiple short date strings. Instantiating and reusing |
| * one of these builders is faster than repeatedly bringing up all the locale stuff. |
| * |
| */ |
| public class FormattedDateBuilder { |
| |
| private StringBuilder sb; |
| private Formatter dateFormatter; |
| private Context mContext; |
| |
| public FormattedDateBuilder(Context context) { |
| mContext = context; |
| sb = new StringBuilder(); |
| dateFormatter = new Formatter(sb); |
| } |
| |
| public CharSequence formatShortDate(long when) { |
| return DateUtils.getRelativeTimeSpanString(mContext, when); |
| } |
| |
| public CharSequence formatLongDateTime(long when) { |
| final Resources resources = mContext.getResources(); |
| |
| if (DateUtils.isToday(when)) { |
| return resources.getString(R.string.date_message_received_today, formatLongTime(when)); |
| } else if (isYesterday(when)) { |
| return resources.getString( |
| R.string.date_message_received_yesterday, formatLongTime(when)); |
| } else { |
| return resources.getString(R.string.date_message_received, |
| formatLongDayAndDate(when), formatLongTime(when)); |
| } |
| } |
| |
| public CharSequence formatLongDayAndDate(long when) { |
| sb.setLength(0); |
| DateUtils.formatDateRange(mContext, dateFormatter, when, when, |
| DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_WEEKDAY |
| | DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_ABBREV_ALL); |
| return sb.toString(); |
| } |
| |
| public CharSequence formatLongTime(long when) { |
| sb.setLength(0); |
| DateUtils.formatDateRange(mContext, dateFormatter, when, when, |
| DateUtils.FORMAT_SHOW_TIME); |
| return sb.toString(); |
| } |
| |
| /** |
| * @return true if the supplied when is today else false |
| */ |
| private static boolean isYesterday(long when) { |
| final Time time = new Time(); |
| time.set(when); |
| |
| final int thenYear = time.year; |
| final int thenMonth = time.month; |
| final int thenMonthDay = time.monthDay; |
| |
| time.set(System.currentTimeMillis()); |
| return (thenYear == time.year) |
| && (thenMonth == time.month) |
| && (thenMonthDay == (time.monthDay-1)); |
| } |
| } |