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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/. */

#include "nsISupports.idl"
#include "nsIURI.idl"

/**
 * nsIURLQueryStringStripper is responsible for stripping certain part of the
 * query string of the given URI to address the bounce(redirect) tracking
 * issues. It will strip every query parameter which matches the strip list
 * defined in the pref 'privacy.query_stripping.strip_list'. Note that It's
 * different from URLDecorationStripper which strips the entire query string
 * from the referrer if there is a tracking query parameter present in the URI.
 *
 * TODO: Given that nsIURLQueryStringStripper and URLDecorationStripper are
 *       doing similar things. We could somehow combine these two modules into
 *       one. We will improve this in the future.
 */
[scriptable, uuid(6b42a890-2624-4560-99c4-b25380e8cd77)]
interface nsIURLQueryStringStripper : nsISupports {

  // Strip the query parameters that are in the strip list. Return the amount of
  // query parameters that have been stripped. Returns 0 if no query parameters
  // have been stripped or the feature is disabled.
  uint32_t strip(in nsIURI aURI, in bool aIsPBM, out nsIURI aOutput);

  // Strip the query parameters that are in the stripForCopy/Share strip list.
  // Returns ether the stripped URI or null if no query parameters have been stripped
  // Thorws NS_ERROR_NOT_AVAILABLE if the feature is disabled.
  [must_use] nsIURI stripForCopyOrShare(in nsIURI aURI);

  // Test-only method to get the current strip list.
  ACString testGetStripList();
};