зеркало из https://github.com/mozilla/gecko-dev.git
128 строки
3.7 KiB
C++
128 строки
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications, Inc. Portions created by Netscape are
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* Copyright (C) 1999, Mozilla. All Rights Reserved.
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*
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* Author:
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* Simon Fraser <sfraser@netscape.com>
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*/
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#include "nsIEnumerator.h"
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#include "nsCOMPtr.h"
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#include "nsVoidArray.h"
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class nsIDocShellTreeItem;
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/*
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// {13cbc281-35ae-11d5-be5b-bde0edece43c}
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#define NS_DOCSHELL_FORWARDS_ENUMERATOR_CID \
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{ 0x13cbc281, 0x35ae, 0x11d5, { 0xbe, 0x5b, 0xbd, 0xe0, 0xed, 0xec, 0xe4, 0x3c } }
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#define NS_DOCSHELL_FORWARDS_ENUMERATOR_CONTRACTID \
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"@mozilla.org/docshell/enumerator-forwards;1"
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// {13cbc282-35ae-11d5-be5b-bde0edece43c}
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#define NS_DOCSHELL_BACKWARDS_ENUMERATOR_CID \
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{ 0x13cbc282, 0x35ae, 0x11d5, { 0xbe, 0x5b, 0xbd, 0xe0, 0xed, 0xec, 0xe4, 0x3c } }
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#define NS_DOCSHELL_BACKWARDS_ENUMERATOR_CONTRACTID \
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"@mozilla.org/docshell/enumerator-backwards;1"
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*/
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class nsDocShellEnumerator : public nsISimpleEnumerator
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{
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protected:
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enum {
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enumerateForwards,
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enumerateBackwards
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};
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public:
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nsDocShellEnumerator(PRInt32 inEnumerationDirection);
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virtual ~nsDocShellEnumerator();
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsISimpleEnumerator
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NS_DECL_NSISIMPLEENUMERATOR
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public:
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nsresult GetEnumerationRootItem(nsIDocShellTreeItem * *aEnumerationRootItem);
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nsresult SetEnumerationRootItem(nsIDocShellTreeItem * aEnumerationRootItem);
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nsresult GetEnumDocShellType(PRInt32 *aEnumerationItemType);
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nsresult SetEnumDocShellType(PRInt32 aEnumerationItemType);
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nsresult First();
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protected:
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nsresult EnsureDocShellArray();
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nsresult ClearState();
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nsresult BuildDocShellArray(nsVoidArray& inItemArray);
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virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsVoidArray& inItemArray) = 0;
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protected:
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nsIDocShellTreeItem* mRootItem; // weak ref!
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nsVoidArray* mItemArray; // flattened list of items with matching type
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PRInt32 mCurIndex;
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PRInt32 mDocShellType; // only want shells of this type
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const PRInt8 mEnumerationDirection;
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};
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class nsDocShellForwardsEnumerator : public nsDocShellEnumerator
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{
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public:
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nsDocShellForwardsEnumerator()
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: nsDocShellEnumerator(enumerateForwards)
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{
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}
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protected:
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virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsVoidArray& inItemArray);
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};
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class nsDocShellBackwardsEnumerator : public nsDocShellEnumerator
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{
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public:
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nsDocShellBackwardsEnumerator()
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: nsDocShellEnumerator(enumerateBackwards)
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{
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}
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protected:
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virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsVoidArray& inItemArray);
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};
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