/* 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/. */

#include "nsISupports.idl"

interface nsIURI;
interface nsIVariant;

[scriptable, uuid(9759bd0e-78e2-4421-9ed1-c676e1af3513)]
interface nsITaggingService : nsISupports
{
  /**
   * Tags a URL with the given set of tags. Current tags set for the URL
   * persist. Tags in aTags which are already set for the given URL are
   * ignored.
   *
   * @param aURI
   *        the URL to tag.
   * @param aTags
   *        Array of tags to set for the given URL.  Each element within the
   *        array can be either a tag name (non-empty string) or a concrete
   *        itemId of a tag container.
   * @param [optional] aSource
   *        A change source constant from nsINavBookmarksService::SOURCE_*.
   *        Defaults to SOURCE_DEFAULT if omitted.
   */
  void tagURI(in nsIURI aURI,
              in nsIVariant aTags,
              [optional] in unsigned short aSource);

  /**
   * Removes tags from a URL. Tags from aTags which are not set for the
   * given URL are ignored.
   *
   * @param aURI
   *        the URL to un-tag.
   * @param aTags
   *        Array of tags to unset.  Pass null to remove all tags from the given
   *        url.  Each element within the array can be either a tag name
   *        (non-empty string) or a concrete itemId of a tag container.
   * @param [optional] aSource
   *        A change source constant from nsINavBookmarksService::SOURCE_*.
   *        Defaults to SOURCE_DEFAULT if omitted.
   */
  void untagURI(in nsIURI aURI,
                in nsIVariant aTags,
                [optional] in unsigned short aSource);

  /**
   * Retrieves all tags set for the given URL.
   *
   * @param aURI
   *        a URL.
   * @returns array of tags (sorted by name).
   */
  Array<AString> getTagsForURI(in nsIURI aURI);

};
