mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-14 15:37:55 +00:00
96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Netscape 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/NPL/
|
|
*
|
|
* 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 mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the NPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the NPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
#ifndef NSIFRAMETRAVERSAL_H
|
|
#define NSIFRAMETRAVERSAL_H
|
|
|
|
#include "nsISupports.h"
|
|
#include "nsIEnumerator.h"
|
|
#include "nsIFrame.h"
|
|
|
|
/* Brief explanation of frame traversal types:
|
|
*
|
|
* LEAF:
|
|
* Iterate over only the leaf frames in the tree, in depth-first order.
|
|
*
|
|
* EXTENSIVE:
|
|
* Iterate over all frames in the tree, including non-leaf frames.
|
|
* Child frames are traversed before their parents going both forward
|
|
* and backward.
|
|
*
|
|
* FOCUS:
|
|
* Traverse frames in "focus" order, which is like extensive but
|
|
* does a strict preorder traversal in both directions. This type of
|
|
* traversal also handles placeholder frames transparently, meaning that
|
|
* it will never stop on one - going down will get the real frame, going
|
|
* back up will go on past the placeholder, so the placeholders are logically
|
|
* part of the frame tree.
|
|
*
|
|
* FASTEST:
|
|
* XXX not implemented
|
|
*
|
|
* VISUAL:
|
|
* Traverse frames in "visual" order (left-to-right, top-to-bottom).
|
|
*/
|
|
|
|
enum nsTraversalType{
|
|
LEAF,
|
|
EXTENSIVE,
|
|
FOCUS,
|
|
FASTEST
|
|
#ifdef IBMBIDI // Simon
|
|
, VISUAL
|
|
#endif
|
|
};
|
|
|
|
// {1691E1F3-EE41-11d4-9885-00C04FA0CF4B}
|
|
#define NS_IFRAMETRAVERSAL_IID \
|
|
{ 0x1691e1f3, 0xee41, 0x11d4, { 0x98, 0x85, 0x0, 0xc0, 0x4f, 0xa0, 0xcf, 0x4b } }
|
|
|
|
class nsIFrameTraversal : public nsISupports
|
|
{
|
|
public:
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IFRAMETRAVERSAL_IID)
|
|
|
|
NS_IMETHOD NewFrameTraversal(nsIBidirectionalEnumerator **aEnumerator,
|
|
PRUint32 aType,
|
|
nsIPresContext* aPresContext,
|
|
nsIFrame *aStart) = 0;
|
|
};
|
|
|
|
|
|
#endif //NSIFRAMETRAVERSAL_H
|