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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Simon Fraser <sfraser@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 MPL, 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 MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsIEnumerator.h"
#include "nsCOMPtr.h"
#include "nsTArray.h"
#include "nsIWeakReferenceUtils.h"
class nsIDocShellTreeItem;
/*
// {13cbc281-35ae-11d5-be5b-bde0edece43c}
#define NS_DOCSHELL_FORWARDS_ENUMERATOR_CID \
{ 0x13cbc281, 0x35ae, 0x11d5, { 0xbe, 0x5b, 0xbd, 0xe0, 0xed, 0xec, 0xe4, 0x3c } }
#define NS_DOCSHELL_FORWARDS_ENUMERATOR_CONTRACTID \
"@mozilla.org/docshell/enumerator-forwards;1"
// {13cbc282-35ae-11d5-be5b-bde0edece43c}
#define NS_DOCSHELL_BACKWARDS_ENUMERATOR_CID \
{ 0x13cbc282, 0x35ae, 0x11d5, { 0xbe, 0x5b, 0xbd, 0xe0, 0xed, 0xec, 0xe4, 0x3c } }
#define NS_DOCSHELL_BACKWARDS_ENUMERATOR_CONTRACTID \
"@mozilla.org/docshell/enumerator-backwards;1"
*/
class nsDocShellEnumerator : public nsISimpleEnumerator
{
protected:
enum {
enumerateForwards,
enumerateBackwards
};
public:
nsDocShellEnumerator(PRInt32 inEnumerationDirection);
virtual ~nsDocShellEnumerator();
// nsISupports
NS_DECL_ISUPPORTS
// nsISimpleEnumerator
NS_DECL_NSISIMPLEENUMERATOR
public:
nsresult GetEnumerationRootItem(nsIDocShellTreeItem * *aEnumerationRootItem);
nsresult SetEnumerationRootItem(nsIDocShellTreeItem * aEnumerationRootItem);
nsresult GetEnumDocShellType(PRInt32 *aEnumerationItemType);
nsresult SetEnumDocShellType(PRInt32 aEnumerationItemType);
nsresult First();
protected:
nsresult EnsureDocShellArray();
nsresult ClearState();
nsresult BuildDocShellArray(nsTArray<nsWeakPtr>& inItemArray);
virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsTArray<nsWeakPtr>& inItemArray) = 0;
protected:
nsWeakPtr mRootItem; // weak ref!
nsTArray<nsWeakPtr> mItemArray; // flattened list of items with matching type
PRUint32 mCurIndex;
PRInt32 mDocShellType; // only want shells of this type
bool mArrayValid; // is mItemArray up to date?
const PRInt8 mEnumerationDirection;
};
class nsDocShellForwardsEnumerator : public nsDocShellEnumerator
{
public:
nsDocShellForwardsEnumerator()
: nsDocShellEnumerator(enumerateForwards)
{
}
protected:
virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsTArray<nsWeakPtr>& inItemArray);
};
class nsDocShellBackwardsEnumerator : public nsDocShellEnumerator
{
public:
nsDocShellBackwardsEnumerator()
: nsDocShellEnumerator(enumerateBackwards)
{
}
protected:
virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsTArray<nsWeakPtr>& inItemArray);
};
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