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92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* interface for container for information saved in session history when
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* the document is not
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*/
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#ifndef _nsILayoutHistoryState_h
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#define _nsILayoutHistoryState_h
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#include "nsISupports.h"
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#include "nsStringFwd.h"
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class nsPresState;
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#define NS_ILAYOUTHISTORYSTATE_IID \
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{ 0x99003f0f, 0x7ade, 0x44a1, \
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{ 0x81, 0x74, 0xe3, 0x6a, 0xa5, 0xbb, 0x6b, 0x10 } }
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class nsILayoutHistoryState : public nsISupports {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_ILAYOUTHISTORYSTATE_IID)
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/**
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* Set |aState| as the state object for |aKey|.
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* This _transfers_ownership_ of |aState| to the LayoutHistoryState.
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* It will be freed when RemoveState() is called or when the
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* LayoutHistoryState is destroyed.
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*/
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NS_IMETHOD AddState(const nsCString& aKey, nsPresState* aState) = 0;
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/**
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* Look up the state object for |aKey|.
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*/
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NS_IMETHOD GetState(const nsCString& aKey, nsPresState** aState) = 0;
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/**
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* Remove the state object for |aKey|.
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*/
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NS_IMETHOD RemoveState(const nsCString& aKey) = 0;
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/**
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* Check whether this history has any states in it
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*/
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NS_IMETHOD_(PRBool) HasStates() const = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsILayoutHistoryState,
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NS_ILAYOUTHISTORYSTATE_IID)
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nsresult
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NS_NewLayoutHistoryState(nsILayoutHistoryState** aState);
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#endif /* _nsILayoutHistoryState_h */
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