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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_COMMON_TIME_FORMAT_H__
#define CHROME_COMMON_TIME_FORMAT_H__
// This file defines methods to format time values as strings.
#include <string>
#include "unicode/smpdtfmt.h"
class Time;
class TimeDelta;
class TimeFormat {
public:
// Returns a localized string of approximate time remaining. The conditions
// are simpler than PastTime since this is used for in-progress operations
// and users have different expectations of units.
// Ex: "3 mins left", "2 days left".
static std::wstring TimeRemaining(const TimeDelta& delta);
// Same as TimeRemaining without the "left".
static std::wstring TimeRemainingShort(const TimeDelta& delta);
// For displaying a relative time in the past. This method returns either
// "Today", "Yesterday", or an empty string if it's older than that.
//
// TODO(brettw): This should be able to handle days in the future like
// "Tomorrow".
// TODO(tc): This should be able to do things like "Last week". This
// requires handling singluar/plural for all languages.
//
// The second parameter is optional, it is midnight of "Now" for relative day
// computations: Time::Now().LocalMidnight()
// If NULL, the current day's midnight will be retrieved, which can be
// slow. If many items are being processed, it is best to get the current
// time once at the beginning and pass it for each computation.
static std::wstring RelativeDate(const Time& time,
const Time* optional_midnight_today);
};
#endif // CHROME_COMMON_TIME_FORMAT_H__
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