text: /* -*- Mode: C++; tab-width: 3; 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/. */
  
  #ifndef nsTreeUtils_h__
  #define nsTreeUtils_h__
  
  #include "nsString.h"
  #include "nsISupportsArray.h"
  #include "nsIContent.h"
  
  class nsTreeUtils
  {
    public:
      /**
       * Parse a whitespace separated list of properties into an array
       * of atoms.
       */
      static nsresult
      TokenizeProperties(const nsAString& aProperties, nsISupportsArray* aPropertiesArray);
  
      static nsIContent*
      GetImmediateChild(nsIContent* aContainer, nsIAtom* aTag);
  
      static nsIContent*
      GetDescendantChild(nsIContent* aContainer, nsIAtom* aTag);
  
      static nsresult
      UpdateSortIndicators(nsIContent* aColumn, const nsAString& aDirection);
  
      static nsresult
      GetColumnIndex(nsIContent* aColumn, int32_t* aResult);
  };
  
  #endif // nsTreeUtils_h__
  