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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/**
 * nsIURLFormatter
 *
 * nsIURLFormatter exposes methods to substitute variables in URL formats.
 * Variable names can contain 'A-Z' letters and '_' characters.
 *
 * Mozilla Applications linking to Mozilla websites are strongly encouraged to use
 * URLs of the following format:
 *
 *   http[s]://%SERVICE%.mozilla.[com|org]/%LOCALE%/
 */

#include "nsISupports.idl"

[scriptable, uuid(4ab31d30-372d-11db-a98b-0800200c9a66)]
interface nsIURLFormatter: nsISupports
{
  /** 
   * formatURL - Formats a string URL
   *
   * The set of known variables is predefined.
   * If a variable is unknown, it is left unchanged and a non-fatal error is reported.
   *
   * @param aFormat string Unformatted URL.
   *
   * @return The formatted URL.
   */
  AString formatURL(in AString aFormat);

  /** 
   * formatURLPref - Formats a string URL stored in a preference
   *
   * If the preference value cannot be retrieved, a fatal error is reported
   * and the "about:blank" URL is returned.
   *
   * @param aPref string Preference name.
   *
   * @return The formatted URL returned by formatURL(), or "about:blank".
   */
  AString formatURLPref(in AString aPref);

  /**
   * Remove all of the sensitive query parameter strings from URLs in |aMsg|.
   */
  AString trimSensitiveURLs(in AString aMsg);
};