inIDeepTreeWalker.idl

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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"

webidl Node;

// Note: the iterator does not handle DOM mutations gracefully. So if

// the underlying DOM we are iterating over is changed, the behavior

// of the walker is undefined. (With the current implementation we

// cache the siblings of the current node and this list is not updated

// when a mutation occurs).

[scriptable, uuid(6657e8eb-b646-48e7-993e-cfa6e96415b4)]

interface inIDeepTreeWalker : nsISupports

  attribute boolean showAnonymousContent;

  attribute boolean showSubDocuments;

  // By default the walker skips document nodes from the iteration,

  // by setting this flag to true this behavior can be altered.

  attribute boolean showDocumentsAsNodes;

  void init(in Node aRoot);

  // Methods and attributes that look like TreeWalker.

  // Note: normally parentNode cannot go further up on the tree once it reached

  // the root, but setting currentNode does not have this limitation. If currentNode

  // is set to a node that does not have the root as its ancestor the walk can be

  // continued from there, and once we reach a node that is 'under' the root, the

  // limitation for the parentNode will work again.

  readonly attribute Node             root;

           attribute Node             currentNode;

  Node         parentNode();

  Node         firstChild();

  Node         lastChild();

  Node         previousSibling();

  Node         nextSibling();

  Node         previousNode();

  Node         nextNode();

};