/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Mozilla browser.
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications, Inc.  Portions created by Netscape are
 * Copyright (C) 1999, Mozilla.  All Rights Reserved.
 * 
 * Contributor(s):
 *   Travis Bogard <travis@netscape.com>
 *   Steve Clark <buster@netscape.com>
 */

#include "nsISupports.idl"
#include "nsIDocShellTreeItem.idl"

/**
 * The nsIDocShellTreeNode supplies the methods for interacting with children
 * of a docshell.  These are essentially the methods that turn a single docshell
 * into a docshell tree. 
 */

[scriptable, uuid(C094F810-A8AB-11d3-AFC6-00A024FFC08C)]
interface nsIDocShellTreeNode : nsISupports
{
	/*
	The current number of DocShells which are immediate children of the 
	this object.
	*/
	readonly attribute long childCount;

	/*
	Add a new child DocShellTreeItem.  Adds to the end of the list.
	*/
	void addChild(in nsIDocShellTreeItem child);

	/*
	Removes a child DocShellTreeItem.
	*/
	void removeChild(in nsIDocShellTreeItem child);

	/* Return the child at the index requested.  This is 0-based.*/
	nsIDocShellTreeItem getChildAt(in long index);

	/*
	Return the child DocShellTreeItem with the specified name.
	aName - This is the name of the item that is trying to be found.
	aRecurse - Is used to tell the function to recurse through children.
		Note, recursion will only happen through items of the same type.
	aSameType - If this is set only children of the same type will be returned.
	aRequestor - This is the docshellTreeItem that is requesting the find.  This
		parameter is used when recursion is being used to avoid searching the same
		tree again when a child has asked a parent to search for children.

	Note the search is depth first when recursing.
	*/
	nsIDocShellTreeItem findChildWithName(in wstring aName, in boolean aRecurse,
		in boolean aSameType, in nsIDocShellTreeItem aRequestor);
};