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See the announcement on Discourse.

DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsISupports.idl"
#include "nsIControllerCommandTable.idl"

[scriptable, builtinclass, uuid(47B82B60-A36F-4167-8072-6F421151ED50)]
interface nsIControllerContext : nsISupports
{
  /**
   *  Set a context on this controller, which is passed
   *  Set a context on this controller, which is passed
   *  to commands to give them some context when they execute.
   *
   * @param aCommandContext  the context passed to commands.
   *                        Note that this is *not* addreffed by the
   *                        controller, and so needs to outlive it,
   *                        controller, and so needs to outlive it,
   *                        or be nulled out.
   */
  void setCommandContext(in nsISupports aCommandContext);
};