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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
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 * Software distributed under the License is distributed on an "AS IS" basis,
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 * The Original Code is Oracle Corporation code.
 *
 * The Initial Developer of the Original Code is
 *  Michiel van Leeuwen <mvl@exedo.nl>
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
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 *
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#include "nsISupports.idl"

interface calIDateTime;

/**
 * This interface will calculate a week title from a given datetime. This
 * will depends on the users preferences. 
 * Extensions might override the default implementation, in order to
 * generate week titles aimed at special cases (like weeknumbers for a
 * schoolyear)
 */
[scriptable, uuid(6bcf8c57-f066-4eba-ab48-950c9fffd9ff)]
interface calIWeekTitleService: nsISupports
{
  /**
   * Return the week title. It's meant to be displayed.
   * (Usually, will return a weeknumber, but might return a string like Q1W4)
   *
   * @param dateTime
   *            The dateTime to get the weektitle for
   * @returns
   *            A string, representing the week title. Will usually be the
   *            week number. Every week (7 days) should get a different string,
   *            but the switch from one week to the next isn't necessarily
   *            on sunday.
   */
  AString getWeekTitle (in calIDateTime dataTime);
};